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f67539c2 TL |
1 | #ifndef __S3SELECT_FUNCTIONS__ |
2 | #define __S3SELECT_FUNCTIONS__ | |
3 | ||
4 | ||
5 | #include "s3select_oper.h" | |
20effc67 TL |
6 | #include <boost/algorithm/string.hpp> |
7 | #include <boost/algorithm/string/trim.hpp> | |
20effc67 TL |
8 | #include <boost/regex.hpp> |
9 | #include <algorithm> | |
10 | ||
11 | using namespace std::string_literals; | |
12 | ||
f67539c2 TL |
13 | #define BOOST_BIND_ACTION_PARAM( push_name ,param ) boost::bind( &push_name::operator(), g_ ## push_name , _1 ,_2, param) |
14 | namespace s3selectEngine | |
15 | { | |
16 | ||
20effc67 TL |
17 | constexpr double sec_scale(int n) |
18 | { | |
19 | return pow(10, n); | |
20 | } | |
21 | ||
22 | struct push_char | |
23 | { | |
24 | void operator()(const char* a, const char* b, uint32_t* n) const | |
25 | { | |
26 | *n = *a; | |
27 | } | |
28 | ||
29 | }; | |
30 | static push_char g_push_char; | |
31 | ||
f67539c2 TL |
32 | struct push_2dig |
33 | { | |
34 | void operator()(const char* a, const char* b, uint32_t* n) const | |
35 | { | |
20effc67 | 36 | *n = (static_cast<char>(*a) - 48) * 10 + (static_cast<char>(*(a+1)) - 48) ; |
f67539c2 TL |
37 | } |
38 | ||
39 | }; | |
40 | static push_2dig g_push_2dig; | |
41 | ||
42 | struct push_4dig | |
43 | { | |
44 | void operator()(const char* a, const char* b, uint32_t* n) const | |
45 | { | |
20effc67 | 46 | *n = (static_cast<char>(*a) - 48) * 1000 + (static_cast<char>(*(a+1)) - 48) * 100 + (static_cast<char>(*(a+2)) - 48) * 10 + (static_cast<char>(*(a+3)) - 48); |
f67539c2 TL |
47 | } |
48 | ||
49 | }; | |
50 | static push_4dig g_push_4dig; | |
51 | ||
20effc67 TL |
52 | struct push_1fdig |
53 | { | |
54 | void operator()(const char* a, const char* b, uint32_t* n) const | |
55 | { | |
56 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
57 | const double scale = sec_scale(9-1); //nano-sec | |
58 | #else | |
59 | const double scale = sec_scale(6-1); //micro-sec | |
60 | #endif | |
61 | ||
62 | *n = ((static_cast<char>(*a) - 48)) * scale; | |
63 | } | |
64 | ||
65 | }; | |
66 | static push_1fdig g_push_1fdig; | |
67 | ||
68 | struct push_2fdig | |
69 | { | |
70 | void operator()(const char* a, const char* b, uint32_t* n) const | |
71 | { | |
72 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
73 | const double scale = sec_scale(9-2); //nano-sec | |
74 | #else | |
75 | const double scale = sec_scale(6-2); //micro-sec | |
76 | #endif | |
77 | ||
78 | *n = ((static_cast<char>(*a) - 48) * 10 + (static_cast<char>(*(a+1)) - 48)) * scale; | |
79 | } | |
80 | ||
81 | }; | |
82 | static push_2fdig g_push_2fdig; | |
83 | ||
84 | struct push_3fdig | |
85 | { | |
86 | void operator()(const char* a, const char* b, uint32_t* n) const | |
87 | { | |
88 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
89 | const double scale = sec_scale(9-3); //nano-sec | |
90 | #else | |
91 | const double scale = sec_scale(6-3); //micro-sec | |
92 | #endif | |
93 | ||
94 | *n = ((static_cast<char>(*a) - 48) * 100 + (static_cast<char>(*(a+1)) - 48) * 10 + (static_cast<char>(*(a+2)) - 48)) * scale; | |
95 | } | |
96 | ||
97 | }; | |
98 | static push_3fdig g_push_3fdig; | |
99 | ||
100 | struct push_4fdig | |
101 | { | |
102 | void operator()(const char* a, const char* b, uint32_t* n) const | |
103 | { | |
104 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
105 | const double scale = sec_scale(9-4); //nano-sec | |
106 | #else | |
107 | const double scale = sec_scale(6-4); //micro-sec | |
108 | #endif | |
109 | ||
110 | *n = ((static_cast<char>(*a) - 48) * 1000 + (static_cast<char>(*(a+1)) - 48) * 100 + (static_cast<char>(*(a+2)) - 48) * 10 + (static_cast<char>(*(a+3)) - 48)) * scale; | |
111 | } | |
112 | ||
113 | }; | |
114 | static push_4fdig g_push_4fdig; | |
115 | ||
116 | struct push_5fdig | |
117 | { | |
118 | void operator()(const char* a, const char* b, uint32_t* n) const | |
119 | { | |
120 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
121 | const double scale = sec_scale(9-5); //nano-sec | |
122 | #else | |
123 | const double scale = sec_scale(6-5); //micro-sec | |
124 | #endif | |
125 | ||
126 | *n = ((static_cast<char>(*a) - 48) * 10000 + (static_cast<char>(*(a+1)) - 48) * 1000 + (static_cast<char>(*(a+2)) - 48) * 100 + (static_cast<char>(*(a+3)) - 48) * 10 + (static_cast<char>(*(a+4)) - 48)) * scale; | |
127 | } | |
128 | ||
129 | }; | |
130 | static push_5fdig g_push_5fdig; | |
131 | ||
132 | struct push_6fdig | |
133 | { | |
134 | void operator()(const char* a, const char* b, uint32_t* n) const | |
135 | { | |
136 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
137 | const double scale = sec_scale(9-6); //nano-sec | |
138 | #else | |
139 | const double scale = sec_scale(6-6); //micro-sec | |
140 | #endif | |
141 | ||
142 | *n = ((static_cast<char>(*a) - 48) * 100000 + (static_cast<char>(*(a+1)) - 48) * 10000 + (static_cast<char>(*(a+2)) - 48) * 1000 + (static_cast<char>(*(a+3)) - 48) * 100 + (static_cast<char>(*(a+4)) - 48) * 10 + (static_cast<char>(*(a+5)) - 48)) * scale; | |
143 | } | |
144 | ||
145 | }; | |
146 | static push_6fdig g_push_6fdig; | |
147 | ||
148 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
149 | struct push_7fdig | |
150 | { | |
151 | void operator()(const char* a, const char* b, uint32_t* n) const | |
152 | { | |
153 | const double scale = sec_scale(9-7); //nano-sec | |
154 | *n = ((static_cast<char>(*a) - 48) * 1000000 + (static_cast<char>(*(a+1)) - 48) * 100000 + (static_cast<char>(*(a+2)) - 48) * 10000 + (static_cast<char>(*(a+3)) - 48) * 1000 + (static_cast<char>(*(a+4)) - 48) * 100 + (static_cast<char>(*(a+5)) - 48) * 10 + (static_cast<char>(*(a+6)) - 48)) * scale; | |
155 | } | |
156 | ||
157 | }; | |
158 | static push_7fdig g_push_7fdig; | |
159 | ||
160 | struct push_8fdig | |
161 | { | |
162 | void operator()(const char* a, const char* b, uint32_t* n) const | |
163 | { | |
164 | const double scale = sec_scale(9-8); //nano-sec | |
165 | *n = ((static_cast<char>(*a) - 48) * 10000000 + (static_cast<char>(*(a+1)) - 48) * 1000000 + (static_cast<char>(*(a+2)) - 48) * 100000 + (static_cast<char>(*(a+3)) - 48) * 10000 + (static_cast<char>(*(a+4)) - 48) * 1000 + (static_cast<char>(*(a+5)) - 48) * 100 + (static_cast<char>(*(a+6)) - 48) * 10 + (static_cast<char>(*(a+7)) - 48)) * scale; | |
166 | } | |
167 | ||
168 | }; | |
169 | static push_8fdig g_push_8fdig; | |
170 | ||
171 | struct push_9fdig | |
172 | { | |
173 | void operator()(const char* a, const char* b, uint32_t* n) const | |
174 | { | |
175 | const double scale = sec_scale(9-9); //nano-sec | |
176 | *n = ((static_cast<char>(*a) - 48) * 100000000 + (static_cast<char>(*(a+1)) - 48) * 10000000 + (static_cast<char>(*(a+2)) - 48) * 1000000 + (static_cast<char>(*(a+3)) - 48) * 100000 + (static_cast<char>(*(a+4)) - 48) * 10000 + (static_cast<char>(*(a+5)) - 48) * 1000 + (static_cast<char>(*(a+6)) - 48) * 100 + (static_cast<char>(*(a+7)) - 48) * 10 + (static_cast<char>(*(a+8)) - 48)) * scale; | |
177 | } | |
178 | ||
179 | }; | |
180 | static push_9fdig g_push_9fdig; | |
181 | #endif | |
182 | ||
f67539c2 TL |
183 | enum class s3select_func_En_t {ADD, |
184 | SUM, | |
20effc67 | 185 | AVG, |
f67539c2 TL |
186 | MIN, |
187 | MAX, | |
188 | COUNT, | |
189 | TO_INT, | |
190 | TO_FLOAT, | |
191 | TO_TIMESTAMP, | |
20effc67 TL |
192 | TO_STRING_CONSTANT, |
193 | TO_STRING_DYNAMIC, | |
194 | TO_BOOL, | |
f67539c2 | 195 | SUBSTR, |
20effc67 TL |
196 | EXTRACT_YEAR, |
197 | EXTRACT_MONTH, | |
198 | EXTRACT_DAY, | |
199 | EXTRACT_HOUR, | |
200 | EXTRACT_MINUTE, | |
201 | EXTRACT_SECOND, | |
202 | EXTRACT_WEEK, | |
203 | EXTRACT_TIMEZONE_HOUR, | |
204 | EXTRACT_TIMEZONE_MINUTE, | |
205 | DATE_ADD_YEAR, | |
206 | DATE_ADD_MONTH, | |
207 | DATE_ADD_DAY, | |
208 | DATE_ADD_HOUR, | |
209 | DATE_ADD_MINUTE, | |
210 | DATE_ADD_SECOND, | |
211 | DATE_DIFF_YEAR, | |
212 | DATE_DIFF_MONTH, | |
213 | DATE_DIFF_DAY, | |
214 | DATE_DIFF_HOUR, | |
215 | DATE_DIFF_MINUTE, | |
216 | DATE_DIFF_SECOND, | |
217 | UTCNOW, | |
218 | LENGTH, | |
219 | LOWER, | |
220 | UPPER, | |
221 | NULLIF, | |
222 | BETWEEN, | |
1e59de90 | 223 | NOT_BETWEEN, |
20effc67 TL |
224 | IS_NULL, |
225 | IS_NOT_NULL, | |
226 | IN, | |
227 | LIKE, | |
228 | VERSION, | |
229 | CASE_WHEN_ELSE, | |
230 | WHEN_THEN, | |
231 | WHEN_VALUE_THEN, | |
232 | COALESCE, | |
233 | STRING, | |
234 | TRIM, | |
235 | LEADING, | |
236 | TRAILING | |
f67539c2 TL |
237 | }; |
238 | ||
239 | ||
20effc67 | 240 | class s3select_functions |
f67539c2 TL |
241 | { |
242 | ||
243 | private: | |
244 | ||
245 | using FunctionLibrary = std::map<std::string, s3select_func_En_t>; | |
20effc67 | 246 | s3select_allocator* m_s3select_allocator; |
1e59de90 | 247 | std::set<base_statement*>* m_ast_nodes_for_cleanup; |
20effc67 | 248 | |
f67539c2 TL |
249 | const FunctionLibrary m_functions_library = |
250 | { | |
251 | {"add", s3select_func_En_t::ADD}, | |
252 | {"sum", s3select_func_En_t::SUM}, | |
20effc67 | 253 | {"avg", s3select_func_En_t::AVG}, |
f67539c2 TL |
254 | {"count", s3select_func_En_t::COUNT}, |
255 | {"min", s3select_func_En_t::MIN}, | |
256 | {"max", s3select_func_En_t::MAX}, | |
257 | {"int", s3select_func_En_t::TO_INT}, | |
258 | {"float", s3select_func_En_t::TO_FLOAT}, | |
20effc67 TL |
259 | {"substring", s3select_func_En_t::SUBSTR}, |
260 | {"to_timestamp", s3select_func_En_t::TO_TIMESTAMP}, | |
261 | {"#to_string_constant#",s3select_func_En_t::TO_STRING_CONSTANT}, | |
262 | {"#to_string_dynamic#",s3select_func_En_t::TO_STRING_DYNAMIC}, | |
263 | {"to_bool", s3select_func_En_t::TO_BOOL}, | |
264 | {"#extract_year#", s3select_func_En_t::EXTRACT_YEAR}, | |
265 | {"#extract_month#", s3select_func_En_t::EXTRACT_MONTH}, | |
266 | {"#extract_day#", s3select_func_En_t::EXTRACT_DAY}, | |
267 | {"#extract_hour#", s3select_func_En_t::EXTRACT_HOUR}, | |
268 | {"#extract_minute#", s3select_func_En_t::EXTRACT_MINUTE}, | |
269 | {"#extract_second#", s3select_func_En_t::EXTRACT_SECOND}, | |
270 | {"#extract_week#", s3select_func_En_t::EXTRACT_WEEK}, | |
271 | {"#extract_timezone_hour#", s3select_func_En_t::EXTRACT_TIMEZONE_HOUR}, | |
272 | {"#extract_timezone_minute#", s3select_func_En_t::EXTRACT_TIMEZONE_MINUTE}, | |
273 | {"#dateadd_year#", s3select_func_En_t::DATE_ADD_YEAR}, | |
274 | {"#dateadd_month#", s3select_func_En_t::DATE_ADD_MONTH}, | |
275 | {"#dateadd_day#", s3select_func_En_t::DATE_ADD_DAY}, | |
276 | {"#dateadd_hour#", s3select_func_En_t::DATE_ADD_HOUR}, | |
277 | {"#dateadd_minute#", s3select_func_En_t::DATE_ADD_MINUTE}, | |
278 | {"#dateadd_second#", s3select_func_En_t::DATE_ADD_SECOND}, | |
279 | {"#datediff_year#", s3select_func_En_t::DATE_DIFF_YEAR}, | |
280 | {"#datediff_month#", s3select_func_En_t::DATE_DIFF_MONTH}, | |
281 | {"#datediff_day#", s3select_func_En_t::DATE_DIFF_DAY}, | |
282 | {"#datediff_hour#", s3select_func_En_t::DATE_DIFF_HOUR}, | |
283 | {"#datediff_minute#", s3select_func_En_t::DATE_DIFF_MINUTE}, | |
284 | {"#datediff_second#", s3select_func_En_t::DATE_DIFF_SECOND}, | |
285 | {"utcnow", s3select_func_En_t::UTCNOW}, | |
286 | {"character_length", s3select_func_En_t::LENGTH}, | |
287 | {"char_length", s3select_func_En_t::LENGTH}, | |
288 | {"lower", s3select_func_En_t::LOWER}, | |
289 | {"upper", s3select_func_En_t::UPPER}, | |
290 | {"nullif", s3select_func_En_t::NULLIF}, | |
291 | {"#between#", s3select_func_En_t::BETWEEN}, | |
1e59de90 | 292 | {"#not_between#", s3select_func_En_t::NOT_BETWEEN}, |
20effc67 TL |
293 | {"#is_null#", s3select_func_En_t::IS_NULL}, |
294 | {"#is_not_null#", s3select_func_En_t::IS_NOT_NULL}, | |
295 | {"#in_predicate#", s3select_func_En_t::IN}, | |
296 | {"#like_predicate#", s3select_func_En_t::LIKE}, | |
297 | {"version", s3select_func_En_t::VERSION}, | |
298 | {"#when-then#", s3select_func_En_t::WHEN_THEN}, | |
299 | {"#when-value-then#", s3select_func_En_t::WHEN_VALUE_THEN}, | |
300 | {"#case-when-else#", s3select_func_En_t::CASE_WHEN_ELSE}, | |
301 | {"coalesce", s3select_func_En_t::COALESCE}, | |
302 | {"string", s3select_func_En_t::STRING}, | |
303 | {"#trim#", s3select_func_En_t::TRIM}, | |
304 | {"#leading#", s3select_func_En_t::LEADING}, | |
305 | {"#trailing#", s3select_func_En_t::TRAILING} | |
f67539c2 TL |
306 | }; |
307 | ||
308 | public: | |
309 | ||
20effc67 TL |
310 | base_function* create(std::string_view fn_name,const bs_stmt_vec_t&); |
311 | ||
1e59de90 | 312 | s3select_functions():m_s3select_allocator(nullptr),m_ast_nodes_for_cleanup(nullptr) |
20effc67 TL |
313 | { |
314 | } | |
315 | ||
20effc67 TL |
316 | |
317 | void setAllocator(s3select_allocator* alloc) | |
318 | { | |
319 | m_s3select_allocator = alloc; | |
320 | } | |
321 | ||
1e59de90 TL |
322 | void set_AST_nodes_for_cleanup(std::set<base_statement*>* ast_for_cleanup) |
323 | { | |
324 | m_ast_nodes_for_cleanup = ast_for_cleanup; | |
325 | } | |
326 | ||
20effc67 TL |
327 | s3select_allocator* getAllocator() |
328 | { | |
329 | return m_s3select_allocator; | |
330 | } | |
331 | ||
332 | void clean(); | |
333 | ||
f67539c2 TL |
334 | }; |
335 | ||
336 | class __function : public base_statement | |
337 | { | |
338 | ||
339 | private: | |
20effc67 TL |
340 | bs_stmt_vec_t arguments; |
341 | std::basic_string<char,std::char_traits<char>,ChunkAllocator<char,256>> name; | |
f67539c2 TL |
342 | base_function* m_func_impl; |
343 | s3select_functions* m_s3select_functions; | |
344 | variable m_result; | |
20effc67 | 345 | bool m_is_aggregate_function; |
f67539c2 TL |
346 | |
347 | void _resolve_name() | |
348 | { | |
349 | if (m_func_impl) | |
350 | { | |
351 | return; | |
352 | } | |
353 | ||
20effc67 TL |
354 | auto string_to_lower = [](std::basic_string<char,std::char_traits<char>,ChunkAllocator<char,256>> s) |
355 | { | |
356 | std::transform(s.begin(),s.end(),s.begin(),[](unsigned char c){ return std::tolower(c); }); | |
357 | return s; | |
358 | }; | |
359 | ||
360 | //the function name is converted into lowercase to enable case-insensitive | |
361 | base_function* f = m_s3select_functions->create(string_to_lower(name),arguments); | |
f67539c2 TL |
362 | if (!f) |
363 | { | |
364 | throw base_s3select_exception("function not found", base_s3select_exception::s3select_exp_en_t::FATAL); //should abort query | |
365 | } | |
366 | m_func_impl = f; | |
20effc67 | 367 | m_is_aggregate_function= m_func_impl->is_aggregate(); |
1e59de90 | 368 | |
f67539c2 TL |
369 | } |
370 | ||
371 | public: | |
20effc67 TL |
372 | |
373 | base_function* impl() | |
374 | { | |
375 | return m_func_impl; | |
376 | } | |
377 | ||
1e59de90 | 378 | void traverse_and_apply(scratch_area* sa, projection_alias* pa,bool json_statement) override |
f67539c2 TL |
379 | { |
380 | m_scratch = sa; | |
381 | m_aliases = pa; | |
1e59de90 | 382 | m_json_statement = json_statement; |
f67539c2 TL |
383 | for (base_statement* ba : arguments) |
384 | { | |
1e59de90 | 385 | ba->traverse_and_apply(sa, pa, json_statement); |
f67539c2 TL |
386 | } |
387 | } | |
388 | ||
20effc67 TL |
389 | void set_last_call() override |
390 | {//it cover the use-case where aggregation function is an argument in non-aggregate function. | |
391 | is_last_call = true; | |
392 | for (auto& ba : arguments) | |
393 | { | |
394 | ba->set_last_call(); | |
395 | } | |
396 | } | |
397 | ||
398 | void set_skip_non_aggregate(bool skip_non_aggregate_op) override | |
399 | {//it cover the use-case where aggregation function is an argument in non-aggregate function. | |
400 | m_skip_non_aggregate_op = skip_non_aggregate_op; | |
401 | for (auto& ba : arguments) | |
402 | { | |
403 | ba->set_skip_non_aggregate(m_skip_non_aggregate_op); | |
404 | } | |
405 | } | |
f67539c2 | 406 | |
20effc67 TL |
407 | bool is_aggregate() const override |
408 | { | |
409 | return m_is_aggregate_function; | |
f67539c2 TL |
410 | } |
411 | ||
20effc67 | 412 | bool semantic() override |
f67539c2 TL |
413 | { |
414 | return true; | |
415 | } | |
416 | ||
20effc67 TL |
417 | __function(const char* fname, s3select_functions* s3f) : name(fname), m_func_impl(nullptr), m_s3select_functions(s3f),m_is_aggregate_function(false) |
418 | {} | |
f67539c2 | 419 | |
20effc67 | 420 | value& eval() override |
f67539c2 | 421 | { |
20effc67 TL |
422 | return eval_internal(); |
423 | } | |
f67539c2 | 424 | |
20effc67 TL |
425 | value& eval_internal() override |
426 | { | |
427 | ||
428 | _resolve_name();//node is "resolved" (function is created) upon first call/first row. | |
f67539c2 TL |
429 | |
430 | if (is_last_call == false) | |
20effc67 TL |
431 | {//all rows prior to last row |
432 | if(m_skip_non_aggregate_op == false || is_aggregate() == true) | |
433 | { | |
434 | (*m_func_impl)(&arguments, &m_result); | |
435 | } | |
436 | else if(m_skip_non_aggregate_op == true) | |
437 | { | |
438 | for(auto& p : arguments) | |
439 | {//evaluating the arguments (not the function itself, which is a non-aggregate function) | |
440 | //i.e. in the following use case substring( , sum(),count() ) ; only sum() and count() are evaluated. | |
441 | p->eval(); | |
442 | } | |
443 | } | |
f67539c2 TL |
444 | } |
445 | else | |
20effc67 TL |
446 | {//on the last row, the aggregate function is finalized, |
447 | //and non-aggregate function is evaluated with the result of aggregate function. | |
448 | if(is_aggregate()) | |
449 | (*m_func_impl).get_aggregate_result(&m_result); | |
450 | else | |
451 | (*m_func_impl)(&arguments, &m_result); | |
f67539c2 TL |
452 | } |
453 | ||
454 | return m_result.get_value(); | |
455 | } | |
456 | ||
20effc67 TL |
457 | void resolve_node() override |
458 | { | |
459 | _resolve_name(); | |
f67539c2 | 460 | |
20effc67 TL |
461 | for (auto& arg : arguments) |
462 | { | |
463 | arg->resolve_node(); | |
464 | } | |
465 | } | |
f67539c2 | 466 | |
20effc67 | 467 | std::string print(int ident) override |
f67539c2 TL |
468 | { |
469 | return std::string(0); | |
470 | } | |
471 | ||
472 | void push_argument(base_statement* arg) | |
473 | { | |
474 | arguments.push_back(arg); | |
475 | } | |
476 | ||
477 | ||
20effc67 | 478 | bs_stmt_vec_t& get_arguments() |
f67539c2 TL |
479 | { |
480 | return arguments; | |
481 | } | |
482 | ||
20effc67 | 483 | virtual ~__function() = default; |
f67539c2 TL |
484 | }; |
485 | ||
f67539c2 TL |
486 | /* |
487 | s3-select function defintions | |
488 | */ | |
489 | struct _fn_add : public base_function | |
490 | { | |
491 | ||
492 | value var_result; | |
493 | ||
20effc67 | 494 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 | 495 | { |
20effc67 | 496 | auto iter = args->begin(); |
f67539c2 TL |
497 | base_statement* x = *iter; |
498 | iter++; | |
499 | base_statement* y = *iter; | |
500 | ||
501 | var_result = x->eval() + y->eval(); | |
502 | ||
503 | *result = var_result; | |
504 | ||
505 | return true; | |
506 | } | |
507 | }; | |
508 | ||
509 | struct _fn_sum : public base_function | |
510 | { | |
511 | ||
512 | value sum; | |
513 | ||
514 | _fn_sum() : sum(0) | |
515 | { | |
516 | aggregate = true; | |
517 | } | |
518 | ||
20effc67 | 519 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 | 520 | { |
20effc67 | 521 | auto iter = args->begin(); |
f67539c2 TL |
522 | base_statement* x = *iter; |
523 | ||
524 | try | |
525 | { | |
526 | sum = sum + x->eval(); | |
527 | } | |
528 | catch (base_s3select_exception& e) | |
529 | { | |
f67539c2 TL |
530 | if (e.severity() == base_s3select_exception::s3select_exp_en_t::FATAL) |
531 | { | |
532 | throw; | |
533 | } | |
534 | } | |
535 | ||
536 | return true; | |
537 | } | |
538 | ||
20effc67 | 539 | void get_aggregate_result(variable* result) override |
f67539c2 TL |
540 | { |
541 | *result = sum ; | |
542 | } | |
543 | }; | |
544 | ||
545 | struct _fn_count : public base_function | |
546 | { | |
547 | ||
548 | int64_t count; | |
549 | ||
550 | _fn_count():count(0) | |
551 | { | |
552 | aggregate=true; | |
553 | } | |
554 | ||
20effc67 | 555 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 | 556 | { |
1e59de90 TL |
557 | if (args->size()) |
558 | {// in case argument exist, should count only non-null. | |
559 | auto iter = args->begin(); | |
560 | base_statement* x = *iter; | |
561 | ||
562 | if(!x->eval().is_null()) | |
563 | { | |
564 | count += 1; | |
565 | } | |
566 | } | |
567 | else | |
568 | {//in case of non-arguments // count() | |
569 | count += 1; | |
570 | } | |
f67539c2 TL |
571 | |
572 | return true; | |
573 | } | |
574 | ||
20effc67 | 575 | void get_aggregate_result(variable* result) override |
f67539c2 TL |
576 | { |
577 | result->set_value(count); | |
578 | } | |
579 | ||
580 | }; | |
581 | ||
20effc67 TL |
582 | struct _fn_avg : public base_function |
583 | { | |
584 | ||
585 | value sum; | |
586 | value count{0.0}; | |
587 | ||
588 | _fn_avg() : sum(0) { aggregate = true; } | |
589 | ||
590 | bool operator()(bs_stmt_vec_t* args, variable *result) override | |
591 | { | |
592 | auto iter = args->begin(); | |
593 | base_statement *x = *iter; | |
594 | ||
595 | try | |
596 | { | |
597 | sum = sum + x->eval(); | |
598 | count++; | |
599 | } | |
600 | catch (base_s3select_exception &e) | |
601 | { | |
602 | throw base_s3select_exception(e.what()); | |
603 | } | |
604 | ||
605 | return true; | |
606 | } | |
607 | ||
608 | void get_aggregate_result(variable *result) override | |
609 | { | |
610 | if(count == static_cast<value>(0)) { | |
611 | throw base_s3select_exception("count cannot be zero!"); | |
612 | } else { | |
613 | *result = sum/count ; | |
614 | } | |
615 | } | |
616 | }; | |
617 | ||
f67539c2 TL |
618 | struct _fn_min : public base_function |
619 | { | |
620 | ||
621 | value min; | |
622 | ||
623 | _fn_min():min(__INT64_MAX__) | |
624 | { | |
625 | aggregate=true; | |
626 | } | |
627 | ||
20effc67 | 628 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 | 629 | { |
20effc67 | 630 | auto iter = args->begin(); |
f67539c2 TL |
631 | base_statement* x = *iter; |
632 | ||
633 | if(min > x->eval()) | |
634 | { | |
635 | min=x->eval(); | |
636 | } | |
637 | ||
638 | return true; | |
639 | } | |
640 | ||
20effc67 | 641 | void get_aggregate_result(variable* result) override |
f67539c2 TL |
642 | { |
643 | *result = min; | |
644 | } | |
645 | ||
646 | }; | |
647 | ||
648 | struct _fn_max : public base_function | |
649 | { | |
650 | ||
651 | value max; | |
652 | ||
653 | _fn_max():max(-__INT64_MAX__) | |
654 | { | |
655 | aggregate=true; | |
656 | } | |
657 | ||
20effc67 | 658 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 | 659 | { |
20effc67 | 660 | auto iter = args->begin(); |
f67539c2 TL |
661 | base_statement* x = *iter; |
662 | ||
663 | if(max < x->eval()) | |
664 | { | |
665 | max=x->eval(); | |
666 | } | |
667 | ||
668 | return true; | |
669 | } | |
670 | ||
20effc67 | 671 | void get_aggregate_result(variable* result) override |
f67539c2 TL |
672 | { |
673 | *result = max; | |
674 | } | |
675 | ||
676 | }; | |
677 | ||
678 | struct _fn_to_int : public base_function | |
679 | { | |
f67539c2 | 680 | value var_result; |
f67539c2 | 681 | |
20effc67 | 682 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 | 683 | { |
20effc67 | 684 | value v = (*args->begin())->eval(); |
f67539c2 | 685 | |
20effc67 TL |
686 | switch (v.type) { |
687 | ||
688 | case value::value_En_t::STRING: | |
f67539c2 | 689 | { |
20effc67 TL |
690 | char* pend; |
691 | errno = 0; | |
692 | int64_t i= strtol(v.str(), &pend, 10); | |
693 | if (errno == ERANGE) { | |
694 | throw base_s3select_exception("converted value would fall out of the range of the result type!"); | |
695 | } | |
696 | if (pend == v.str()) { | |
697 | // no number found | |
698 | throw base_s3select_exception("text cannot be converted to a number"); | |
699 | } | |
700 | if (*pend) { | |
701 | throw base_s3select_exception("extra characters after the number"); | |
702 | } | |
703 | ||
704 | var_result = i; | |
f67539c2 | 705 | } |
20effc67 TL |
706 | break; |
707 | ||
708 | case value::value_En_t::FLOAT: | |
709 | var_result = static_cast<int64_t>(v.dbl()); | |
710 | break; | |
f67539c2 | 711 | |
20effc67 TL |
712 | default: |
713 | var_result = v.i64(); | |
714 | break; | |
715 | } | |
f67539c2 | 716 | |
20effc67 | 717 | *result = var_result; |
f67539c2 TL |
718 | return true; |
719 | } | |
720 | ||
721 | }; | |
722 | ||
723 | struct _fn_to_float : public base_function | |
724 | { | |
f67539c2 | 725 | value var_result; |
f67539c2 | 726 | |
20effc67 | 727 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 | 728 | { |
f67539c2 TL |
729 | value v = (*args->begin())->eval(); |
730 | ||
20effc67 TL |
731 | switch (v.type) { |
732 | ||
733 | case value::value_En_t::STRING: | |
f67539c2 | 734 | { |
20effc67 TL |
735 | char* pend; |
736 | double d = strtod(v.str(), &pend); | |
737 | if (errno == ERANGE) { | |
738 | throw base_s3select_exception("converted value would fall out of the range of the result type!"); | |
739 | } | |
740 | if (pend == v.str()) { | |
741 | // no number found | |
742 | throw base_s3select_exception("text cannot be converted to a number"); | |
743 | } | |
744 | if (*pend) { | |
745 | throw base_s3select_exception("extra characters after the number"); | |
746 | } | |
747 | ||
748 | var_result = d; | |
f67539c2 | 749 | } |
20effc67 TL |
750 | break; |
751 | ||
752 | case value::value_En_t::FLOAT: | |
753 | var_result = v.dbl(); | |
754 | break; | |
755 | ||
756 | default: | |
757 | var_result = v.i64(); | |
758 | break; | |
f67539c2 TL |
759 | } |
760 | ||
f67539c2 | 761 | *result = var_result; |
f67539c2 TL |
762 | return true; |
763 | } | |
764 | ||
765 | }; | |
766 | ||
767 | struct _fn_to_timestamp : public base_function | |
768 | { | |
20effc67 TL |
769 | bsc::rule<> date_separator = bsc::ch_p("-"); |
770 | bsc::rule<> time_separator = bsc::ch_p(":"); | |
771 | bsc::rule<> nano_sec_separator = bsc::ch_p("."); | |
772 | bsc::rule<> delimiter = bsc::ch_p("T"); | |
773 | bsc::rule<> zero_timezone = bsc::ch_p("Z"); | |
774 | bsc::rule<> timezone_sign = bsc::ch_p("-") | bsc::ch_p("+"); | |
f67539c2 TL |
775 | |
776 | uint32_t yr = 1700, mo = 1, dy = 1; | |
777 | bsc::rule<> dig4 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p]; | |
778 | bsc::rule<> dig2 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p]; | |
779 | ||
20effc67 TL |
780 | bsc::rule<> d_yyyy_dig = ((dig4[BOOST_BIND_ACTION_PARAM(push_4dig, &yr)]) >> *(delimiter)); |
781 | bsc::rule<> d_yyyymmdd_dig = ((dig4[BOOST_BIND_ACTION_PARAM(push_4dig, &yr)]) >> *(date_separator) | |
782 | >> (dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &mo)]) >> *(date_separator) | |
783 | >> (dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &dy)]) >> *(delimiter)); | |
784 | ||
785 | uint32_t hr = 0, mn = 0, sc = 0, frac_sec = 0, tz_hr = 0, tz_mn = 0, sign, tm_zone = '0'; | |
786 | ||
787 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
788 | bsc::rule<> fdig9 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p]; | |
789 | bsc::rule<> fdig8 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p]; | |
790 | bsc::rule<> fdig7 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p]; | |
791 | #endif | |
792 | ||
793 | bsc::rule<> fdig6 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p]; | |
794 | bsc::rule<> fdig5 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p]; | |
795 | bsc::rule<> fdig4 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p >> bsc::digit_p >> bsc::digit_p]; | |
796 | bsc::rule<> fdig3 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p >> bsc::digit_p]; | |
797 | bsc::rule<> fdig2 = bsc::lexeme_d[bsc::digit_p >> bsc::digit_p]; | |
798 | bsc::rule<> fdig1 = bsc::lexeme_d[bsc::digit_p]; | |
799 | ||
800 | bsc::rule<> d_timezone_dig = ((timezone_sign[BOOST_BIND_ACTION_PARAM(push_char, &sign)]) >> (dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &tz_hr)]) >> *(time_separator) | |
801 | >> (dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &tz_mn)])) | (zero_timezone[BOOST_BIND_ACTION_PARAM(push_char, &tm_zone)]); | |
802 | ||
803 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
804 | bsc::rule<> fraction_sec = (fdig9[BOOST_BIND_ACTION_PARAM(push_9fdig, &frac_sec)]) | | |
805 | (fdig8[BOOST_BIND_ACTION_PARAM(push_8fdig, &frac_sec)]) | | |
806 | (fdig7[BOOST_BIND_ACTION_PARAM(push_7fdig, &frac_sec)]) | | |
807 | (fdig6[BOOST_BIND_ACTION_PARAM(push_6fdig, &frac_sec)]) | | |
808 | (fdig5[BOOST_BIND_ACTION_PARAM(push_5fdig, &frac_sec)]) | | |
809 | (fdig4[BOOST_BIND_ACTION_PARAM(push_4fdig, &frac_sec)]) | | |
810 | (fdig3[BOOST_BIND_ACTION_PARAM(push_3fdig, &frac_sec)]) | | |
811 | (fdig2[BOOST_BIND_ACTION_PARAM(push_2fdig, &frac_sec)]) | | |
812 | (fdig1[BOOST_BIND_ACTION_PARAM(push_1fdig, &frac_sec)]); | |
813 | #else | |
814 | bsc::rule<> fraction_sec = (fdig6[BOOST_BIND_ACTION_PARAM(push_6fdig, &frac_sec)]) | | |
815 | (fdig5[BOOST_BIND_ACTION_PARAM(push_5fdig, &frac_sec)]) | | |
816 | (fdig4[BOOST_BIND_ACTION_PARAM(push_4fdig, &frac_sec)]) | | |
817 | (fdig3[BOOST_BIND_ACTION_PARAM(push_3fdig, &frac_sec)]) | | |
818 | (fdig2[BOOST_BIND_ACTION_PARAM(push_2fdig, &frac_sec)]) | | |
819 | (fdig1[BOOST_BIND_ACTION_PARAM(push_1fdig, &frac_sec)]); | |
820 | #endif | |
821 | ||
822 | bsc::rule<> d_time_dig = ((dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &hr)]) >> *(time_separator) | |
823 | >> (dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &mn)]) >> *(time_separator) | |
824 | >> (dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &sc)]) >> *(nano_sec_separator) | |
825 | >> (fraction_sec) >> (d_timezone_dig)) | | |
826 | ((dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &hr)]) >> *(time_separator) | |
827 | >> (dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &mn)]) >> *(time_separator) | |
828 | >> (dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &sc)]) >> (d_timezone_dig)) | | |
829 | ((dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &hr)]) >> *(time_separator) | |
830 | >> (dig2[BOOST_BIND_ACTION_PARAM(push_2dig, &mn)]) >> (d_timezone_dig)); | |
831 | ||
832 | bsc::rule<> d_date_time = ((d_yyyymmdd_dig) >> (d_time_dig)) | (d_yyyymmdd_dig) | (d_yyyy_dig); | |
833 | ||
834 | timestamp_t tmstmp; | |
f67539c2 | 835 | value v_str; |
20effc67 | 836 | int tz_hour, tz_min; |
f67539c2 TL |
837 | |
838 | bool datetime_validation() | |
839 | { | |
20effc67 | 840 | if (yr >= 1400 && yr <= 9999 && mo >= 1 && mo <= 12 && dy >= 1 && hr < 24 && mn < 60 && sc < 60 && tz_hour <= 14 && tz_hour >= -12 && tz_mn < 60) |
f67539c2 | 841 | { |
20effc67 TL |
842 | if ( (tz_hour == -12 || tz_hour == 14) && tz_mn > 0) |
843 | return false; | |
f67539c2 | 844 | |
20effc67 TL |
845 | switch (mo) |
846 | { | |
847 | case 1: | |
848 | case 3: | |
849 | case 5: | |
850 | case 7: | |
851 | case 8: | |
852 | case 10: | |
853 | case 12: | |
854 | if(dy <= 31) | |
855 | { | |
856 | return true; | |
857 | } | |
858 | break; | |
859 | case 4: | |
860 | case 6: | |
861 | case 9: | |
862 | case 11: | |
863 | if(dy <= 30) | |
864 | { | |
865 | return true; | |
866 | } | |
867 | break; | |
868 | case 2: | |
869 | if(dy >= 28) | |
870 | { | |
871 | if(!(yr % 4) == 0 && dy > 28) | |
872 | { | |
873 | return false; | |
874 | } | |
875 | else if(!(yr % 100) == 0 && dy <= 29) | |
876 | { | |
877 | return true; | |
878 | } | |
879 | else if(!(yr % 400) == 0 && dy > 28) | |
880 | { | |
881 | return false; | |
882 | } | |
883 | else | |
884 | { | |
885 | return true; | |
886 | } | |
887 | } | |
888 | else | |
889 | { | |
890 | return true; | |
891 | } | |
892 | break; | |
893 | default: | |
894 | return false; | |
895 | break; | |
896 | } | |
897 | } | |
898 | return false; | |
f67539c2 TL |
899 | } |
900 | ||
20effc67 | 901 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 TL |
902 | { |
903 | ||
904 | hr = 0; | |
905 | mn = 0; | |
906 | sc = 0; | |
20effc67 TL |
907 | frac_sec = 0; |
908 | tz_hr = 0; | |
909 | tz_mn = 0; | |
910 | tm_zone = '0'; | |
f67539c2 | 911 | |
20effc67 | 912 | auto iter = args->begin(); |
f67539c2 TL |
913 | int args_size = args->size(); |
914 | ||
915 | if (args_size != 1) | |
916 | { | |
917 | throw base_s3select_exception("to_timestamp should have one parameter"); | |
918 | } | |
919 | ||
920 | base_statement* str = *iter; | |
921 | ||
922 | v_str = str->eval(); | |
923 | ||
924 | if (v_str.type != value::value_En_t::STRING) | |
925 | { | |
926 | throw base_s3select_exception("to_timestamp first argument must be string"); //can skip current row | |
927 | } | |
928 | ||
20effc67 TL |
929 | bsc::parse_info<> info_dig = bsc::parse(v_str.str(), d_date_time); |
930 | ||
931 | tz_hour = tz_hr; | |
932 | tz_min = tz_mn; | |
933 | if ((char)sign == '-') | |
934 | { | |
935 | tz_hour *= -1; | |
936 | tz_min *= -1; | |
937 | } | |
f67539c2 TL |
938 | |
939 | if(datetime_validation()==false or !info_dig.full) | |
940 | { | |
941 | throw base_s3select_exception("input date-time is illegal"); | |
942 | } | |
943 | ||
20effc67 TL |
944 | boost::posix_time::ptime new_ptime; |
945 | ||
946 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG | |
947 | new_ptime = boost::posix_time::ptime(boost::gregorian::date(yr, mo, dy), | |
948 | boost::posix_time::hours(hr) + | |
949 | boost::posix_time::minutes(mn) + | |
950 | boost::posix_time::seconds(sc) + | |
951 | boost::posix_time::nanoseconds(frac_sec)); | |
952 | #else | |
953 | new_ptime = boost::posix_time::ptime(boost::gregorian::date(yr, mo, dy), | |
954 | boost::posix_time::hours(hr) + | |
955 | boost::posix_time::minutes(mn) + | |
956 | boost::posix_time::seconds(sc) + | |
957 | boost::posix_time::microseconds(frac_sec)); | |
958 | #endif | |
f67539c2 | 959 | |
20effc67 TL |
960 | tmstmp = std::make_tuple(new_ptime, boost::posix_time::time_duration(tz_hour, tz_min, 0), (char)tm_zone == 'Z'); |
961 | ||
962 | result->set_value(&tmstmp); | |
f67539c2 TL |
963 | |
964 | return true; | |
965 | } | |
966 | ||
967 | }; | |
968 | ||
20effc67 | 969 | struct _fn_to_string_constant : public base_timestamp_to_string |
f67539c2 | 970 | { |
20effc67 | 971 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 | 972 | { |
20effc67 | 973 | param_validation(args); |
f67539c2 | 974 | |
20effc67 | 975 | if (!initialized) |
f67539c2 | 976 | { |
20effc67 TL |
977 | prepare_to_string_vector(print_vector, para); |
978 | initialized = true; | |
f67539c2 TL |
979 | } |
980 | ||
20effc67 | 981 | std::string result_ = execute_to_string(print_vector, para); |
f67539c2 | 982 | |
20effc67 TL |
983 | result->set_value(result_.c_str()); |
984 | return true; | |
985 | } | |
986 | }; | |
f67539c2 | 987 | |
20effc67 TL |
988 | struct _fn_to_string_dynamic : public base_timestamp_to_string |
989 | { | |
990 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
991 | { | |
992 | param_validation(args); | |
f67539c2 | 993 | |
20effc67 TL |
994 | print_vector.clear(); |
995 | para.clear(); | |
f67539c2 | 996 | |
20effc67 | 997 | prepare_to_string_vector(print_vector, para); |
f67539c2 | 998 | |
20effc67 | 999 | std::string result_ = execute_to_string(print_vector, para); |
f67539c2 | 1000 | |
20effc67 TL |
1001 | result->set_value(result_.c_str()); |
1002 | return true; | |
1003 | } | |
1004 | }; | |
f67539c2 | 1005 | |
20effc67 TL |
1006 | struct _fn_extract_year_from_timestamp : public base_date_extract |
1007 | { | |
1008 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1009 | { | |
1010 | param_validation(args); | |
f67539c2 | 1011 | |
20effc67 | 1012 | result->set_value( (int64_t)new_ptime.date().year()); |
f67539c2 TL |
1013 | return true; |
1014 | } | |
f67539c2 TL |
1015 | }; |
1016 | ||
20effc67 | 1017 | struct _fn_extract_month_from_timestamp : public base_date_extract |
f67539c2 | 1018 | { |
20effc67 TL |
1019 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
1020 | { | |
1021 | param_validation(args); | |
f67539c2 | 1022 | |
20effc67 TL |
1023 | result->set_value( (int64_t)new_ptime.date().month()); |
1024 | return true; | |
1025 | } | |
1026 | }; | |
f67539c2 | 1027 | |
20effc67 TL |
1028 | struct _fn_extract_day_from_timestamp : public base_date_extract |
1029 | { | |
1030 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
f67539c2 | 1031 | { |
20effc67 | 1032 | param_validation(args); |
f67539c2 | 1033 | |
20effc67 TL |
1034 | result->set_value( (int64_t)new_ptime.date().day()); |
1035 | return true; | |
1036 | } | |
1037 | }; | |
f67539c2 | 1038 | |
20effc67 TL |
1039 | struct _fn_extract_hour_from_timestamp : public base_date_extract |
1040 | { | |
1041 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1042 | { | |
1043 | param_validation(args); | |
1044 | ||
1045 | result->set_value( (int64_t)new_ptime.time_of_day().hours()); | |
1046 | return true; | |
1047 | } | |
1048 | }; | |
f67539c2 | 1049 | |
20effc67 TL |
1050 | struct _fn_extract_minute_from_timestamp : public base_date_extract |
1051 | { | |
1052 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1053 | { | |
1054 | param_validation(args); | |
f67539c2 | 1055 | |
20effc67 TL |
1056 | result->set_value( (int64_t)new_ptime.time_of_day().minutes()); |
1057 | return true; | |
1058 | } | |
1059 | }; | |
1060 | ||
1061 | struct _fn_extract_second_from_timestamp : public base_date_extract | |
1062 | { | |
1063 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1064 | { | |
1065 | param_validation(args); | |
1066 | ||
1067 | result->set_value( (int64_t)new_ptime.time_of_day().seconds()); | |
1068 | return true; | |
1069 | } | |
1070 | }; | |
1071 | ||
1072 | struct _fn_extract_week_from_timestamp : public base_date_extract | |
1073 | { | |
1074 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1075 | { | |
1076 | param_validation(args); | |
1077 | ||
1078 | result->set_value( (int64_t)new_ptime.date().week_number()); | |
1079 | return true; | |
1080 | } | |
1081 | }; | |
1082 | ||
1083 | struct _fn_extract_tz_hour_from_timestamp : public base_date_extract | |
1084 | { | |
1085 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1086 | { | |
1087 | param_validation(args); | |
1088 | ||
1089 | result->set_value((int64_t)td.hours()); | |
1090 | return true; | |
1091 | } | |
1092 | }; | |
1093 | ||
1094 | struct _fn_extract_tz_minute_from_timestamp : public base_date_extract | |
1095 | { | |
1096 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1097 | { | |
1098 | param_validation(args); | |
1099 | ||
1100 | result->set_value((int64_t)td.minutes()); | |
1101 | return true; | |
1102 | } | |
1103 | }; | |
1104 | ||
1105 | struct _fn_diff_year_timestamp : public base_date_diff | |
1106 | { | |
1107 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1108 | { | |
1109 | param_validation(args); | |
1110 | ||
1111 | int year1 = ptime1.date().year(); | |
1112 | int year2 = ptime2.date().year(); | |
1113 | boost::posix_time::time_duration time1 = boost::posix_time::time_duration( | |
1114 | ptime1.time_of_day().hours(), ptime1.time_of_day().minutes(), | |
1115 | ptime1.time_of_day().seconds()); | |
1116 | boost::posix_time::time_duration time2 = boost::posix_time::time_duration( | |
1117 | ptime2.time_of_day().hours(), ptime2.time_of_day().minutes(), | |
1118 | ptime2.time_of_day().seconds()); | |
1119 | ||
1120 | if (year2 > year1 && ((ptime2.date().day_of_year() < ptime1.date().day_of_year()) || | |
1121 | (ptime2.date().day_of_year() == ptime1.date().day_of_year() && time2 < time1))) | |
f67539c2 | 1122 | { |
20effc67 | 1123 | year2 -= 1; |
f67539c2 | 1124 | } |
20effc67 TL |
1125 | else if (year2 < year1 && ((ptime2.date().day_of_year() > ptime1.date().day_of_year()) || |
1126 | (ptime2.date().day_of_year() == ptime1.date().day_of_year() && time2 > time1))) | |
f67539c2 | 1127 | { |
20effc67 | 1128 | year2 += 1; |
f67539c2 TL |
1129 | } |
1130 | ||
20effc67 TL |
1131 | int64_t yr = year2 - year1; |
1132 | result->set_value( yr ); | |
1133 | return true; | |
1134 | } | |
1135 | }; | |
1136 | ||
1137 | struct _fn_diff_month_timestamp : public base_date_diff | |
1138 | { | |
1139 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1140 | { | |
1141 | param_validation(args); | |
1142 | ||
1143 | int year1 = ptime1.date().year(); | |
1144 | int year2 = ptime2.date().year(); | |
1145 | int mon1 = ptime1.date().month(); | |
1146 | int mon2 = ptime2.date().month(); | |
1147 | boost::posix_time::time_duration time1 = boost::posix_time::time_duration( | |
1148 | ptime1.time_of_day().hours(), ptime1.time_of_day().minutes(), | |
1149 | ptime1.time_of_day().seconds()); | |
1150 | boost::posix_time::time_duration time2 = boost::posix_time::time_duration( | |
1151 | ptime2.time_of_day().hours(), ptime2.time_of_day().minutes(), | |
1152 | ptime2.time_of_day().seconds()); | |
1153 | ||
1154 | if (year2 > year1) | |
1155 | { | |
1156 | if (ptime2.date().day() < ptime1.date().day() || (ptime2.date().day() == ptime1.date().day() && time2 < time1)) | |
1157 | { | |
1158 | mon2 -= 1; | |
1159 | } | |
1160 | ||
1161 | if (ptime2.date().month() < ptime1.date().month()) | |
1162 | { | |
1163 | mon2 += 12; | |
1164 | year2 -= 1; | |
1165 | } | |
f67539c2 | 1166 | } |
20effc67 | 1167 | else if (year2 < year1) |
f67539c2 | 1168 | { |
20effc67 TL |
1169 | if (ptime2.date().day() > ptime1.date().day() || (ptime2.date().day() == ptime1.date().day() && time2 > time1)) |
1170 | { | |
1171 | mon1 -= 1; | |
1172 | } | |
1173 | ||
1174 | if (ptime2.date().month() > ptime1.date().month()) | |
1175 | { | |
1176 | mon1 += 12; | |
1177 | year1 -= 1; | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | int64_t mon_diff = (year2 - year1) * 12 + mon2 - mon1; | |
1182 | ||
1183 | result->set_value(mon_diff); | |
1184 | return true; | |
1185 | } | |
1186 | }; | |
1187 | ||
1188 | struct _fn_diff_day_timestamp : public base_date_diff | |
1189 | { | |
1190 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1191 | { | |
1192 | param_validation(args); | |
1193 | ||
1194 | boost::posix_time::time_duration td_res = ptime2 - ptime1; | |
1195 | int total_seconds = (((td_res.hours() * 60) + td_res.minutes()) * 60) + td_res.seconds(); | |
1196 | int64_t days = total_seconds / (24 * 3600); | |
1197 | ||
1198 | result->set_value(days); | |
1199 | return true; | |
1200 | } | |
1201 | }; | |
1202 | ||
1203 | struct _fn_diff_hour_timestamp : public base_date_diff | |
1204 | { | |
1205 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1206 | { | |
1207 | param_validation(args); | |
1208 | ||
1209 | boost::posix_time::time_duration td_res = ptime2 - ptime1; | |
1210 | result->set_value((int64_t)td_res.hours()); | |
1211 | return true; | |
1212 | } | |
1213 | }; | |
1214 | ||
1215 | struct _fn_diff_minute_timestamp : public base_date_diff | |
1216 | { | |
1217 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1218 | { | |
1219 | param_validation(args); | |
1220 | ||
1221 | boost::posix_time::time_duration td_res = ptime2 - ptime1; | |
1222 | result->set_value((int64_t)((td_res.hours() * 60) + td_res.minutes())); | |
1223 | return true; | |
1224 | } | |
1225 | }; | |
1226 | ||
1227 | struct _fn_diff_second_timestamp : public base_date_diff | |
1228 | { | |
1229 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1230 | { | |
1231 | param_validation(args); | |
1232 | ||
1233 | boost::posix_time::time_duration td_res = ptime2 - ptime1; | |
1234 | result->set_value((int64_t)((((td_res.hours() * 60) + td_res.minutes()) * 60) + td_res.seconds())); | |
1235 | return true; | |
1236 | } | |
1237 | }; | |
1238 | ||
1239 | struct _fn_add_year_to_timestamp : public base_date_add | |
1240 | { | |
1241 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1242 | { | |
1243 | param_validation(args); | |
1244 | ||
1245 | new_ptime += boost::gregorian::years( val_quantity.i64() ); | |
1246 | new_tmstmp = std::make_tuple(new_ptime, td, flag); | |
1247 | result->set_value( &new_tmstmp ); | |
1248 | return true; | |
1249 | } | |
1250 | }; | |
1251 | ||
1252 | struct _fn_add_month_to_timestamp : public base_date_add | |
1253 | { | |
1254 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1255 | { | |
1256 | param_validation(args); | |
1257 | ||
1258 | int yr, mn, dy, quant; | |
1259 | quant = val_quantity.i64(); | |
1260 | dy = new_ptime.date().day(); | |
f67539c2 | 1261 | |
20effc67 TL |
1262 | int temp = quant % 12; |
1263 | mn = new_ptime.date().month() + temp; | |
1264 | temp = quant / 12; | |
1265 | yr = new_ptime.date().year() + temp; | |
1266 | ||
1267 | if (mn > 12) | |
1268 | { | |
1269 | yr += 1; | |
1270 | temp = mn % 12; | |
1271 | if (temp == 0) | |
1272 | { | |
1273 | temp = 12; | |
1274 | } | |
1275 | mn = temp; | |
f67539c2 | 1276 | } |
20effc67 | 1277 | else if (mn < 1) |
f67539c2 | 1278 | { |
20effc67 TL |
1279 | yr -= 1; |
1280 | if (mn == 0) | |
1281 | { | |
1282 | mn = 12; | |
1283 | } | |
1284 | else | |
1285 | { | |
1286 | mn = 12 + mn; | |
1287 | } | |
f67539c2 | 1288 | } |
20effc67 TL |
1289 | |
1290 | if ((mn == 4 || mn == 6 || mn == 9 || mn == 11) && dy > 30) | |
f67539c2 | 1291 | { |
20effc67 | 1292 | dy = 30; |
f67539c2 | 1293 | } |
20effc67 | 1294 | else if (mn == 2 && dy > 28) |
f67539c2 | 1295 | { |
20effc67 TL |
1296 | if (!(yr % 4) == 0 || ((yr % 100) == 0 && !(yr % 400) == 0)) |
1297 | { | |
1298 | dy = 28; | |
1299 | } | |
1300 | else | |
1301 | { | |
1302 | dy = 29; | |
1303 | } | |
f67539c2 TL |
1304 | } |
1305 | ||
20effc67 TL |
1306 | #if BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG |
1307 | new_ptime = boost::posix_time::ptime(boost::gregorian::date(yr, mn, dy), | |
1308 | boost::posix_time::hours(new_ptime.time_of_day().hours()) + | |
1309 | boost::posix_time::minutes(new_ptime.time_of_day().minutes()) + | |
1310 | boost::posix_time::seconds(new_ptime.time_of_day().seconds()) + | |
1311 | boost::posix_time::nanoseconds(new_ptime.time_of_day().fractional_seconds())); | |
1312 | #else | |
1313 | new_ptime = boost::posix_time::ptime(boost::gregorian::date(yr, mn, dy), | |
1314 | boost::posix_time::hours(new_ptime.time_of_day().hours()) + | |
1315 | boost::posix_time::minutes(new_ptime.time_of_day().minutes()) + | |
1316 | boost::posix_time::seconds(new_ptime.time_of_day().seconds()) + | |
1317 | boost::posix_time::microseconds(new_ptime.time_of_day().fractional_seconds())); | |
1318 | #endif | |
1319 | ||
1320 | new_tmstmp = std::make_tuple(new_ptime, td, flag); | |
1321 | result->set_value( &new_tmstmp ); | |
1322 | return true; | |
1323 | } | |
1324 | }; | |
f67539c2 | 1325 | |
20effc67 TL |
1326 | struct _fn_add_day_to_timestamp : public base_date_add |
1327 | { | |
1328 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1329 | { | |
1330 | param_validation(args); | |
1331 | ||
1332 | new_ptime += boost::gregorian::days( val_quantity.i64() ); | |
1333 | new_tmstmp = std::make_tuple(new_ptime, td, flag); | |
1334 | result->set_value( &new_tmstmp ); | |
1335 | return true; | |
1336 | } | |
1337 | }; | |
1338 | ||
1339 | struct _fn_add_hour_to_timestamp : public base_date_add | |
1340 | { | |
1341 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1342 | { | |
1343 | param_validation(args); | |
1344 | ||
1345 | new_ptime += boost::posix_time::hours( val_quantity.i64() ); | |
1346 | new_tmstmp = std::make_tuple(new_ptime, td, flag); | |
1347 | result->set_value( &new_tmstmp ); | |
1348 | return true; | |
1349 | } | |
1350 | }; | |
1351 | ||
1352 | struct _fn_add_minute_to_timestamp : public base_date_add | |
1353 | { | |
1354 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1355 | { | |
1356 | param_validation(args); | |
1357 | ||
1358 | new_ptime += boost::posix_time::minutes( val_quantity.i64() ); | |
1359 | new_tmstmp = std::make_tuple(new_ptime, td, flag); | |
1360 | result->set_value( &new_tmstmp ); | |
f67539c2 TL |
1361 | return true; |
1362 | } | |
1363 | }; | |
1364 | ||
20effc67 | 1365 | struct _fn_add_second_to_timestamp : public base_date_add |
f67539c2 | 1366 | { |
20effc67 TL |
1367 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
1368 | { | |
1369 | param_validation(args); | |
1370 | ||
1371 | new_ptime += boost::posix_time::seconds( val_quantity.i64() ); | |
1372 | new_tmstmp = std::make_tuple(new_ptime, td, flag); | |
1373 | result->set_value( &new_tmstmp ); | |
1374 | return true; | |
1375 | } | |
1376 | }; | |
1377 | ||
1378 | struct _fn_utcnow : public base_function | |
1379 | { | |
1380 | timestamp_t now_timestamp; | |
1381 | ||
1382 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1383 | { | |
1384 | int args_size = args->size(); | |
1385 | ||
1386 | if (args_size != 0) | |
1387 | { | |
1388 | throw base_s3select_exception("utcnow does not expect any parameters"); | |
1389 | } | |
1390 | ||
1391 | boost::posix_time::ptime now_ptime = boost::posix_time::ptime( boost::posix_time::second_clock::universal_time()); | |
1392 | now_timestamp = std::make_tuple(now_ptime, boost::posix_time::time_duration(0, 0, 0), false); | |
1393 | result->set_value( &now_timestamp ); | |
f67539c2 | 1394 | |
20effc67 TL |
1395 | return true; |
1396 | } | |
1397 | }; | |
f67539c2 | 1398 | |
20effc67 TL |
1399 | struct _fn_between : public base_function |
1400 | { | |
f67539c2 | 1401 | |
20effc67 TL |
1402 | value res; |
1403 | ||
1404 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
f67539c2 | 1405 | { |
f67539c2 TL |
1406 | int args_size = args->size(); |
1407 | ||
20effc67 TL |
1408 | |
1409 | if (args_size != 3) | |
f67539c2 | 1410 | { |
20effc67 TL |
1411 | throw base_s3select_exception("between operates on 3 expressions");//TODO FATAL |
1412 | } | |
1413 | ||
1414 | auto iter = args->begin(); | |
1415 | ||
1416 | base_statement* second_expr = *iter; | |
1417 | iter++; | |
1418 | base_statement* first_expr = *iter; | |
1419 | iter++; | |
1420 | base_statement* main_expr = *iter; | |
1421 | ||
1422 | value second_expr_val = second_expr->eval(); | |
1423 | value first_expr_val = first_expr->eval(); | |
1424 | value main_expr_val = main_expr->eval(); | |
1425 | ||
1426 | if ((second_expr_val.type == first_expr_val.type && first_expr_val.type == main_expr_val.type) || (second_expr_val.is_number() && first_expr_val.is_number() && main_expr_val.is_number())) | |
1427 | { | |
1428 | if((main_expr_val >= first_expr_val) && (main_expr_val <= second_expr_val)) { | |
1429 | result->set_value(true); | |
1430 | } else { | |
1431 | result->set_value(false); | |
1432 | } | |
1433 | } | |
1434 | return true; | |
1435 | } | |
1436 | }; | |
1437 | ||
1e59de90 TL |
1438 | struct _fn_not_between : public base_function |
1439 | { | |
1440 | ||
1441 | value res; | |
1442 | _fn_between between_op; | |
1443 | ||
1444 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1445 | { | |
1446 | between_op(args,result); | |
1447 | ||
1448 | if (result->get_value().is_true() == 0) { | |
1449 | result->set_value(true); | |
1450 | } else { | |
1451 | result->set_value(false); | |
1452 | } | |
1453 | return true; | |
1454 | } | |
1455 | }; | |
1456 | ||
20effc67 TL |
1457 | static char s3select_ver[10]="41.a"; |
1458 | ||
1459 | struct _fn_version : public base_function | |
1460 | { | |
1461 | value val; //TODO use git to generate sha1 | |
1462 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1463 | { | |
1464 | val = &s3select_ver[0]; | |
1465 | *result = val; | |
1466 | return true; | |
1467 | } | |
1468 | }; | |
1469 | ||
1470 | struct _fn_isnull : public base_function | |
1471 | { | |
1472 | ||
1473 | value res; | |
1474 | ||
1475 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1476 | { | |
1477 | auto iter = args->begin(); | |
1478 | base_statement* expr = *iter; | |
1479 | value expr_val = expr->eval(); | |
1480 | if ( expr_val.is_null()) { | |
1481 | result->set_value(true); | |
1482 | } else { | |
1483 | result->set_value(false); | |
1484 | } | |
1485 | return true; | |
1486 | } | |
1487 | }; | |
1488 | ||
1489 | struct _fn_is_not_null : public base_function | |
1490 | { | |
1491 | value res; | |
1492 | _fn_isnull isnull_op; | |
1493 | ||
1494 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1495 | { | |
1496 | ||
1497 | isnull_op(args,result); | |
1498 | ||
1499 | if (result->get_value().is_true() == 0) | |
1500 | result->set_value(true); | |
1501 | else | |
1502 | result->set_value(false); | |
1503 | ||
1504 | return true; | |
1505 | } | |
1506 | }; | |
1507 | ||
1508 | struct _fn_in : public base_function | |
1509 | { | |
1510 | ||
1511 | value res; | |
1512 | ||
1513 | bool operator()(bs_stmt_vec_t *args, variable *result) override | |
1514 | { | |
1515 | int args_size = static_cast<int>(args->size()-1); | |
1516 | base_statement *main_expr = (*args)[args_size]; | |
1517 | value main_expr_val = main_expr->eval(); | |
1518 | args_size--; | |
1519 | while (args_size>=0) | |
1520 | { | |
1521 | base_statement *expr = (*args)[args_size]; | |
1522 | value expr_val = expr->eval(); | |
1523 | args_size--; | |
1524 | if ((expr_val.type == main_expr_val.type) || (expr_val.is_number() && main_expr_val.is_number())) | |
1525 | { | |
1526 | if (expr_val == main_expr_val) | |
1527 | { | |
1528 | result->set_value(true); | |
1529 | return true; | |
1530 | } | |
1531 | } | |
f67539c2 | 1532 | } |
20effc67 TL |
1533 | result->set_value(false); |
1534 | return true; | |
1535 | } | |
1536 | }; | |
1537 | ||
1e59de90 | 1538 | struct _fn_like : public base_like |
20effc67 | 1539 | { |
20effc67 TL |
1540 | explicit _fn_like(base_statement* esc, base_statement* like_expr) |
1541 | { | |
20effc67 | 1542 | auto is_constant = [&](base_statement* bs) { |
1e59de90 | 1543 | if (dynamic_cast<variable*>(bs) && dynamic_cast<variable*>(bs)->m_var_type == variable::var_t::COLUMN_VALUE) { |
20effc67 TL |
1544 | return true; |
1545 | } else { | |
1546 | return false; | |
1547 | } | |
1548 | }; | |
f67539c2 | 1549 | |
20effc67 TL |
1550 | if (is_constant(esc) && is_constant(like_expr)) { |
1551 | constant_state = true; | |
1552 | } | |
1553 | ||
1554 | if(constant_state == true) | |
f67539c2 | 1555 | { |
1e59de90 | 1556 | param_validation(esc, like_expr); |
20effc67 | 1557 | std::vector<char> like_as_regex = transform(like_expr_val.str(), *escape_expr_val.str()); |
1e59de90 | 1558 | compile(like_as_regex); |
20effc67 | 1559 | } |
20effc67 | 1560 | } |
20effc67 | 1561 | |
1e59de90 | 1562 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
20effc67 TL |
1563 | { |
1564 | auto iter = args->begin(); | |
1565 | ||
1566 | base_statement* escape_expr = *iter; | |
1567 | iter++; | |
1568 | base_statement* like_expr = *iter; | |
f67539c2 | 1569 | iter++; |
20effc67 TL |
1570 | base_statement* main_expr = *iter; |
1571 | ||
1e59de90 TL |
1572 | if (constant_state == false) |
1573 | { | |
1574 | param_validation(escape_expr, like_expr); | |
20effc67 | 1575 | std::vector<char> like_as_regex = transform(like_expr_val.str(), *escape_expr_val.str()); |
1e59de90 | 1576 | compile(like_as_regex); |
20effc67 TL |
1577 | } |
1578 | ||
1579 | value main_expr_val = main_expr->eval(); | |
1e59de90 TL |
1580 | if (main_expr_val.type != value::value_En_t::STRING) |
1581 | { | |
1582 | throw base_s3select_exception("main expression must be string"); | |
20effc67 | 1583 | } |
1e59de90 TL |
1584 | |
1585 | match(main_expr_val, result); | |
20effc67 | 1586 | return true; |
1e59de90 | 1587 | } |
20effc67 TL |
1588 | }; |
1589 | ||
1590 | struct _fn_substr : public base_function | |
1591 | { | |
1592 | ||
1593 | char buff[4096];// this buffer is persist for the query life time, it use for the results per row(only for the specific function call) | |
1594 | //it prevent from intensive use of malloc/free (fragmentation). | |
1595 | //should validate result length. | |
1596 | //TODO may replace by std::string (dynamic) , or to replace with global allocator , in query scope. | |
1597 | value v_str; | |
1598 | value v_from; | |
1599 | value v_to; | |
1600 | ||
1601 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1602 | { | |
1603 | auto iter = args->begin(); | |
1604 | int args_size = args->size(); | |
f67539c2 | 1605 | |
20effc67 TL |
1606 | |
1607 | if (args_size<2) | |
f67539c2 | 1608 | { |
20effc67 | 1609 | throw base_s3select_exception("substr accept 2 arguments or 3"); |
f67539c2 TL |
1610 | } |
1611 | ||
20effc67 | 1612 | base_statement* str = *iter; |
f67539c2 | 1613 | iter++; |
20effc67 TL |
1614 | base_statement* from = *iter; |
1615 | base_statement* to; | |
f67539c2 | 1616 | |
20effc67 | 1617 | if (args_size == 3) |
f67539c2 | 1618 | { |
20effc67 TL |
1619 | iter++; |
1620 | to = *iter; | |
1621 | v_to = to->eval(); | |
1622 | if (!v_to.is_number()) | |
1623 | { | |
1624 | throw base_s3select_exception("substr third argument must be number"); //can skip row | |
1625 | } | |
f67539c2 TL |
1626 | } |
1627 | ||
20effc67 | 1628 | v_str = str->eval(); |
f67539c2 | 1629 | |
20effc67 | 1630 | if(v_str.type != value::value_En_t::STRING) |
f67539c2 | 1631 | { |
20effc67 | 1632 | throw base_s3select_exception("substr first argument must be string"); //can skip current row |
f67539c2 | 1633 | } |
20effc67 TL |
1634 | |
1635 | int str_length = strlen(v_str.str()); | |
1636 | ||
1637 | v_from = from->eval(); | |
1638 | if(!v_from.is_number()) | |
f67539c2 | 1639 | { |
20effc67 | 1640 | throw base_s3select_exception("substr second argument must be number"); //can skip current row |
f67539c2 | 1641 | } |
20effc67 TL |
1642 | |
1643 | int64_t f; | |
1644 | int64_t t; | |
1645 | ||
1646 | if (v_from.type == value::value_En_t::FLOAT) | |
f67539c2 | 1647 | { |
20effc67 TL |
1648 | f=v_from.dbl(); |
1649 | } | |
1650 | else | |
1651 | { | |
1652 | f=v_from.i64(); | |
1653 | } | |
1654 | ||
1655 | if (f <= 0 && args_size == 2) | |
1656 | { | |
1657 | f = 1; | |
1658 | } | |
1659 | ||
1660 | if (f>str_length) | |
1661 | { | |
1662 | result->set_value(""); | |
1663 | return true; | |
1664 | } | |
1665 | ||
1666 | if (str_length>(int)sizeof(buff)) | |
1667 | { | |
1668 | throw base_s3select_exception("string too long for internal buffer"); //can skip row | |
1669 | } | |
1670 | ||
1671 | if (args_size == 3) | |
1672 | { | |
1673 | if (v_to.type == value::value_En_t::FLOAT) | |
1674 | { | |
1675 | t = v_to.dbl(); | |
1676 | } | |
1677 | else | |
1678 | { | |
1679 | t = v_to.i64(); | |
1680 | } | |
1681 | ||
1682 | if (f <= 0) | |
1683 | { | |
1684 | t = t + f - 1; | |
1685 | f = 1; | |
1686 | } | |
1687 | ||
1688 | if (t<0) | |
1689 | { | |
1690 | t = 0; | |
1691 | } | |
1692 | ||
1693 | if (t > str_length) | |
1694 | { | |
1695 | t = str_length; | |
1696 | } | |
1697 | ||
1698 | if( (str_length-(f-1)-t) <0) | |
1699 | {//in case the requested length is too long, reduce it to exact length. | |
1700 | t = str_length-(f-1); | |
1701 | } | |
1702 | ||
1703 | strncpy(buff, v_str.str()+f-1, t); | |
f67539c2 TL |
1704 | } |
1705 | else | |
1706 | { | |
20effc67 | 1707 | strcpy(buff, v_str.str()+f-1); |
f67539c2 TL |
1708 | } |
1709 | ||
20effc67 TL |
1710 | result->set_value(buff); |
1711 | ||
f67539c2 TL |
1712 | return true; |
1713 | } | |
20effc67 | 1714 | }; |
f67539c2 | 1715 | |
20effc67 TL |
1716 | struct _fn_charlength : public base_function { |
1717 | ||
1718 | value v_str; | |
1719 | ||
1720 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1721 | { | |
1722 | auto iter = args->begin(); | |
1723 | base_statement* str = *iter; | |
1724 | v_str = str->eval(); | |
1725 | if(v_str.type != value::value_En_t::STRING) { | |
1726 | throw base_s3select_exception("content is not string!"); | |
1727 | } else { | |
1728 | int64_t str_length = strlen(v_str.str()); | |
1729 | result->set_value(str_length); | |
1730 | return true; | |
1731 | } | |
1732 | } | |
1733 | }; | |
1734 | ||
1735 | struct _fn_lower : public base_function { | |
1736 | ||
1737 | std::string buff; | |
1738 | value v_str; | |
1739 | ||
1740 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1741 | { | |
1742 | auto iter = args->begin(); | |
1743 | base_statement* str = *iter; | |
1744 | v_str = str->eval(); | |
1745 | if(v_str.type != value::value_En_t::STRING) { | |
1746 | throw base_s3select_exception("content is not string"); | |
1747 | } else { | |
1748 | buff = v_str.str(); | |
1749 | boost::algorithm::to_lower(buff); | |
1750 | result->set_value(buff.c_str()); | |
1751 | return true; | |
1752 | } | |
1753 | } | |
f67539c2 TL |
1754 | }; |
1755 | ||
20effc67 TL |
1756 | struct _fn_upper : public base_function { |
1757 | ||
1758 | std::string buff; | |
1759 | value v_str; | |
1760 | ||
1761 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1762 | { | |
1763 | auto iter = args->begin(); | |
1764 | base_statement* str = *iter; | |
1765 | v_str = str->eval(); | |
1766 | if(v_str.type != value::value_En_t::STRING) { | |
1767 | throw base_s3select_exception("content is not string"); | |
1768 | } else { | |
1769 | buff = v_str.str(); | |
1770 | boost::algorithm::to_upper(buff); | |
1771 | result->set_value(buff.c_str()); | |
1772 | return true; | |
1773 | } | |
1774 | } | |
1775 | }; | |
1776 | ||
1777 | struct _fn_nullif : public base_function { | |
1778 | ||
1779 | value x; | |
1780 | value y; | |
1781 | ||
1782 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1783 | { | |
1784 | auto iter = args->begin(); | |
1785 | ||
1786 | int args_size = args->size(); | |
1787 | if (args_size != 2) | |
1788 | { | |
1789 | throw base_s3select_exception("nullif accept only 2 arguments"); | |
1790 | } | |
1791 | base_statement *first = *iter; | |
1792 | x = first->eval(); | |
1793 | iter++; | |
1794 | base_statement *second = *iter; | |
1795 | y = second->eval(); | |
1796 | if (x.is_null() && y.is_null()) | |
1797 | { | |
1798 | result->set_null(); | |
1799 | return true; | |
1800 | } | |
1801 | if (x.is_null()) | |
1802 | { | |
1803 | result->set_null(); | |
1804 | return true; | |
1805 | } | |
1806 | if (!(x.is_number() && y.is_number())) { | |
1807 | if (x.type != y.type) { | |
1808 | *result = x; | |
1809 | return true; | |
1810 | } | |
1811 | } | |
1812 | if (x != y) { | |
1813 | *result = x; | |
1814 | } else { | |
1815 | result->set_null(); | |
1816 | } | |
1817 | return true; | |
1818 | } | |
1819 | }; | |
f67539c2 | 1820 | |
20effc67 | 1821 | struct _fn_when_then : public base_function { |
f67539c2 | 1822 | |
20effc67 TL |
1823 | value when_value; |
1824 | ||
1825 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
f67539c2 | 1826 | { |
20effc67 | 1827 | auto iter = args->begin(); |
f67539c2 | 1828 | |
20effc67 TL |
1829 | base_statement* then_expr = *iter; |
1830 | iter ++; | |
1831 | ||
1832 | base_statement* when_expr = *iter; | |
1833 | ||
1834 | when_value = when_expr->eval(); | |
1835 | ||
1836 | if (when_value.is_true())//true | |
f67539c2 | 1837 | { |
20effc67 TL |
1838 | *result = then_expr->eval(); |
1839 | return true; | |
f67539c2 TL |
1840 | } |
1841 | ||
20effc67 | 1842 | result->set_null(); |
f67539c2 TL |
1843 | |
1844 | return true; | |
1845 | } | |
1846 | }; | |
1847 | ||
20effc67 TL |
1848 | struct _fn_when_value_then : public base_function { |
1849 | ||
1850 | value when_value; | |
1851 | value case_value; | |
1852 | value then_value; | |
1853 | ||
1854 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1855 | { | |
1856 | auto iter = args->begin(); | |
1857 | ||
1858 | base_statement* then_expr = *iter; | |
1859 | iter++; | |
1860 | ||
1861 | base_statement* when_expr = *iter; | |
1862 | iter++; | |
1863 | ||
1864 | base_statement* case_expr = *iter; | |
1865 | ||
1866 | when_value = when_expr->eval(); | |
1867 | case_value = case_expr->eval(); | |
1868 | then_value = then_expr->eval(); | |
1869 | ||
1870 | if (case_value == when_value) | |
1871 | { | |
1872 | *result = then_value; | |
1873 | return true; | |
1874 | } | |
1875 | ||
1876 | result->set_null(); | |
1877 | return true; | |
1878 | } | |
1879 | }; | |
1880 | ||
1881 | struct _fn_case_when_else : public base_function { | |
1882 | ||
1883 | value when_then_value; | |
1884 | ||
1885 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1886 | { | |
1887 | base_statement* else_expr = *(args->begin()); | |
1888 | ||
1889 | size_t args_size = args->size() -1; | |
1890 | ||
1891 | for(int ivec=args_size;ivec>0;ivec--) | |
1892 | { | |
1893 | when_then_value = (*args)[ivec]->eval(); | |
1894 | ||
1895 | if(!when_then_value.is_null()) | |
1896 | { | |
1897 | *result = when_then_value; | |
1898 | return true; | |
1899 | } | |
1900 | ||
1901 | } | |
1902 | ||
1903 | *result = else_expr->eval(); | |
1904 | return true; | |
1905 | } | |
1906 | }; | |
1907 | ||
1908 | struct _fn_coalesce : public base_function | |
f67539c2 TL |
1909 | { |
1910 | ||
20effc67 TL |
1911 | value res; |
1912 | ||
1913 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
1914 | { | |
1915 | auto iter_begin = args->begin(); | |
1916 | int args_size = args->size(); | |
1917 | while (args_size >= 1) | |
1918 | { | |
1919 | base_statement* expr = *iter_begin; | |
1920 | value expr_val = expr->eval(); | |
1921 | iter_begin++; | |
1922 | if ( !(expr_val.is_null())) { | |
1923 | *result = expr_val; | |
1924 | return true; | |
1925 | } | |
1926 | args_size--; | |
1927 | } | |
1928 | result->set_null(); | |
1929 | return true; | |
1930 | } | |
1931 | }; | |
f67539c2 | 1932 | |
20effc67 TL |
1933 | struct _fn_string : public base_function |
1934 | { | |
f67539c2 | 1935 | |
20effc67 | 1936 | value res; |
f67539c2 | 1937 | |
20effc67 TL |
1938 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
1939 | { | |
1940 | auto iter = args->begin(); | |
f67539c2 | 1941 | |
20effc67 TL |
1942 | base_statement* expr = *iter; |
1943 | value expr_val = expr->eval(); | |
1944 | result->set_value((expr_val.to_string())); | |
1945 | return true; | |
1946 | } | |
1947 | }; | |
f67539c2 | 1948 | |
20effc67 TL |
1949 | struct _fn_to_bool : public base_function |
1950 | { | |
f67539c2 | 1951 | |
20effc67 | 1952 | value func_arg; |
f67539c2 | 1953 | |
20effc67 TL |
1954 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
1955 | { | |
1956 | int64_t i=0; | |
1957 | func_arg = (*args->begin())->eval(); | |
1958 | ||
1959 | if (func_arg.type == value::value_En_t::FLOAT) | |
f67539c2 | 1960 | { |
20effc67 | 1961 | i = func_arg.dbl(); |
f67539c2 | 1962 | } |
20effc67 | 1963 | else if (func_arg.type == value::value_En_t::DECIMAL || func_arg.type == value::value_En_t::BOOL) |
f67539c2 | 1964 | { |
20effc67 | 1965 | i = func_arg.i64(); |
f67539c2 | 1966 | } |
20effc67 | 1967 | else |
f67539c2 | 1968 | { |
20effc67 | 1969 | i = 0; |
f67539c2 | 1970 | } |
20effc67 | 1971 | if (i == 0) |
f67539c2 | 1972 | { |
20effc67 | 1973 | result->set_value(false); |
f67539c2 TL |
1974 | } |
1975 | else | |
1976 | { | |
20effc67 | 1977 | result->set_value(true); |
f67539c2 | 1978 | } |
20effc67 TL |
1979 | return true; |
1980 | } | |
1981 | }; | |
f67539c2 | 1982 | |
20effc67 TL |
1983 | struct _fn_trim : public base_function { |
1984 | ||
1985 | std::string input_string; | |
1986 | value v_remove; | |
1987 | value v_input; | |
1988 | ||
1989 | _fn_trim() | |
f67539c2 | 1990 | { |
20effc67 | 1991 | v_remove = " "; |
f67539c2 TL |
1992 | } |
1993 | ||
20effc67 | 1994 | bool operator()(bs_stmt_vec_t* args, variable* result) override |
f67539c2 | 1995 | { |
20effc67 TL |
1996 | auto iter = args->begin(); |
1997 | int args_size = args->size(); | |
1998 | base_statement* str = *iter; | |
1999 | v_input = str->eval(); | |
2000 | if(v_input.type != value::value_En_t::STRING) { | |
2001 | throw base_s3select_exception("content is not string"); | |
2002 | } | |
2003 | input_string = v_input.str(); | |
2004 | if (args_size == 2) { | |
2005 | iter++; | |
2006 | base_statement* next = *iter; | |
2007 | v_remove = next->eval(); | |
2008 | } | |
2009 | boost::trim_right_if(input_string,boost::is_any_of(v_remove.str())); | |
2010 | boost::trim_left_if(input_string,boost::is_any_of(v_remove.str())); | |
2011 | result->set_value(input_string.c_str()); | |
2012 | return true; | |
f67539c2 | 2013 | } |
20effc67 | 2014 | }; |
f67539c2 | 2015 | |
20effc67 | 2016 | struct _fn_leading : public base_function { |
f67539c2 | 2017 | |
20effc67 TL |
2018 | std::string input_string; |
2019 | value v_remove; | |
2020 | value v_input; | |
f67539c2 | 2021 | |
20effc67 TL |
2022 | _fn_leading() |
2023 | { | |
2024 | v_remove = " "; | |
f67539c2 | 2025 | } |
20effc67 TL |
2026 | |
2027 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
f67539c2 | 2028 | { |
20effc67 TL |
2029 | auto iter = args->begin(); |
2030 | int args_size = args->size(); | |
2031 | base_statement* str = *iter; | |
2032 | v_input = str->eval(); | |
2033 | if(v_input.type != value::value_En_t::STRING) { | |
2034 | throw base_s3select_exception("content is not string"); | |
2035 | } | |
2036 | input_string = v_input.str(); | |
2037 | if (args_size == 2) { | |
2038 | iter++; | |
2039 | base_statement* next = *iter; | |
2040 | v_remove = next->eval(); | |
2041 | } | |
2042 | boost::trim_left_if(input_string,boost::is_any_of(v_remove.str())); | |
2043 | result->set_value(input_string.c_str()); | |
2044 | return true; | |
f67539c2 | 2045 | } |
20effc67 | 2046 | }; |
f67539c2 | 2047 | |
20effc67 | 2048 | struct _fn_trailing : public base_function { |
f67539c2 | 2049 | |
20effc67 TL |
2050 | std::string input_string; |
2051 | value v_remove; | |
2052 | value v_input; | |
f67539c2 | 2053 | |
20effc67 TL |
2054 | _fn_trailing() |
2055 | { | |
2056 | v_remove = " "; | |
2057 | } | |
2058 | ||
2059 | bool operator()(bs_stmt_vec_t* args, variable* result) override | |
2060 | { | |
2061 | auto iter = args->begin(); | |
2062 | int args_size = args->size(); | |
2063 | base_statement* str = *iter; | |
2064 | v_input = str->eval(); | |
2065 | if(v_input.type != value::value_En_t::STRING) { | |
2066 | throw base_s3select_exception("content is not string"); | |
2067 | } | |
2068 | input_string = v_input.str(); | |
2069 | if (args_size == 2) { | |
2070 | iter++; | |
2071 | base_statement* next = *iter; | |
2072 | v_remove = next->eval(); | |
2073 | } | |
2074 | boost::trim_right_if(input_string,boost::is_any_of(v_remove.str())); | |
2075 | result->set_value(input_string.c_str()); | |
2076 | return true; | |
2077 | } | |
2078 | }; | |
f67539c2 | 2079 | |
20effc67 | 2080 | base_function* s3select_functions::create(std::string_view fn_name,const bs_stmt_vec_t &arguments) |
f67539c2 | 2081 | { |
20effc67 | 2082 | const FunctionLibrary::const_iterator iter = m_functions_library.find(fn_name.data()); |
f67539c2 TL |
2083 | |
2084 | if (iter == m_functions_library.end()) | |
2085 | { | |
2086 | std::string msg; | |
20effc67 | 2087 | msg = std::string{fn_name} + " " + " function not found"; |
f67539c2 TL |
2088 | throw base_s3select_exception(msg, base_s3select_exception::s3select_exp_en_t::FATAL); |
2089 | } | |
2090 | ||
2091 | switch (iter->second) | |
2092 | { | |
2093 | case s3select_func_En_t::ADD: | |
20effc67 | 2094 | return S3SELECT_NEW(this,_fn_add); |
f67539c2 TL |
2095 | break; |
2096 | ||
2097 | case s3select_func_En_t::SUM: | |
20effc67 | 2098 | return S3SELECT_NEW(this,_fn_sum); |
f67539c2 TL |
2099 | break; |
2100 | ||
2101 | case s3select_func_En_t::COUNT: | |
20effc67 | 2102 | return S3SELECT_NEW(this,_fn_count); |
f67539c2 TL |
2103 | break; |
2104 | ||
2105 | case s3select_func_En_t::MIN: | |
20effc67 | 2106 | return S3SELECT_NEW(this,_fn_min); |
f67539c2 TL |
2107 | break; |
2108 | ||
2109 | case s3select_func_En_t::MAX: | |
20effc67 | 2110 | return S3SELECT_NEW(this,_fn_max); |
f67539c2 TL |
2111 | break; |
2112 | ||
2113 | case s3select_func_En_t::TO_INT: | |
20effc67 | 2114 | return S3SELECT_NEW(this,_fn_to_int); |
f67539c2 TL |
2115 | break; |
2116 | ||
2117 | case s3select_func_En_t::TO_FLOAT: | |
20effc67 | 2118 | return S3SELECT_NEW(this,_fn_to_float); |
f67539c2 TL |
2119 | break; |
2120 | ||
2121 | case s3select_func_En_t::SUBSTR: | |
20effc67 | 2122 | return S3SELECT_NEW(this,_fn_substr); |
f67539c2 TL |
2123 | break; |
2124 | ||
2125 | case s3select_func_En_t::TO_TIMESTAMP: | |
20effc67 TL |
2126 | return S3SELECT_NEW(this,_fn_to_timestamp); |
2127 | break; | |
2128 | ||
2129 | case s3select_func_En_t::TO_STRING_CONSTANT: | |
2130 | return S3SELECT_NEW(this,_fn_to_string_constant); | |
2131 | break; | |
2132 | ||
2133 | case s3select_func_En_t::TO_STRING_DYNAMIC: | |
2134 | return S3SELECT_NEW(this,_fn_to_string_dynamic); | |
2135 | break; | |
2136 | ||
2137 | case s3select_func_En_t::TO_BOOL: | |
2138 | return S3SELECT_NEW(this,_fn_to_bool); | |
2139 | break; | |
2140 | ||
2141 | case s3select_func_En_t::EXTRACT_YEAR: | |
2142 | return S3SELECT_NEW(this,_fn_extract_year_from_timestamp); | |
2143 | break; | |
2144 | ||
2145 | case s3select_func_En_t::EXTRACT_MONTH: | |
2146 | return S3SELECT_NEW(this,_fn_extract_month_from_timestamp); | |
2147 | break; | |
2148 | ||
2149 | case s3select_func_En_t::EXTRACT_DAY: | |
2150 | return S3SELECT_NEW(this,_fn_extract_day_from_timestamp); | |
2151 | break; | |
2152 | ||
2153 | case s3select_func_En_t::EXTRACT_HOUR: | |
2154 | return S3SELECT_NEW(this,_fn_extract_hour_from_timestamp); | |
2155 | break; | |
2156 | ||
2157 | case s3select_func_En_t::EXTRACT_MINUTE: | |
2158 | return S3SELECT_NEW(this,_fn_extract_minute_from_timestamp); | |
2159 | break; | |
2160 | ||
2161 | case s3select_func_En_t::EXTRACT_SECOND: | |
2162 | return S3SELECT_NEW(this,_fn_extract_second_from_timestamp); | |
2163 | break; | |
2164 | ||
2165 | case s3select_func_En_t::EXTRACT_WEEK: | |
2166 | return S3SELECT_NEW(this,_fn_extract_week_from_timestamp); | |
2167 | break; | |
2168 | ||
2169 | case s3select_func_En_t::EXTRACT_TIMEZONE_HOUR: | |
2170 | return S3SELECT_NEW(this,_fn_extract_tz_hour_from_timestamp); | |
2171 | break; | |
2172 | ||
2173 | case s3select_func_En_t::EXTRACT_TIMEZONE_MINUTE: | |
2174 | return S3SELECT_NEW(this,_fn_extract_tz_minute_from_timestamp); | |
2175 | break; | |
2176 | ||
2177 | case s3select_func_En_t::DATE_ADD_YEAR: | |
2178 | return S3SELECT_NEW(this,_fn_add_year_to_timestamp); | |
2179 | break; | |
2180 | ||
2181 | case s3select_func_En_t::DATE_ADD_MONTH: | |
2182 | return S3SELECT_NEW(this,_fn_add_month_to_timestamp); | |
2183 | break; | |
2184 | ||
2185 | case s3select_func_En_t::DATE_ADD_DAY: | |
2186 | return S3SELECT_NEW(this,_fn_add_day_to_timestamp); | |
2187 | break; | |
2188 | ||
2189 | case s3select_func_En_t::DATE_ADD_HOUR: | |
2190 | return S3SELECT_NEW(this,_fn_add_hour_to_timestamp); | |
2191 | break; | |
2192 | ||
2193 | case s3select_func_En_t::DATE_ADD_MINUTE: | |
2194 | return S3SELECT_NEW(this,_fn_add_minute_to_timestamp); | |
2195 | break; | |
2196 | ||
2197 | case s3select_func_En_t::DATE_ADD_SECOND: | |
2198 | return S3SELECT_NEW(this,_fn_add_second_to_timestamp); | |
f67539c2 TL |
2199 | break; |
2200 | ||
20effc67 TL |
2201 | case s3select_func_En_t::DATE_DIFF_YEAR: |
2202 | return S3SELECT_NEW(this,_fn_diff_year_timestamp); | |
f67539c2 TL |
2203 | break; |
2204 | ||
20effc67 TL |
2205 | case s3select_func_En_t::DATE_DIFF_MONTH: |
2206 | return S3SELECT_NEW(this,_fn_diff_month_timestamp); | |
f67539c2 TL |
2207 | break; |
2208 | ||
20effc67 TL |
2209 | case s3select_func_En_t::DATE_DIFF_DAY: |
2210 | return S3SELECT_NEW(this,_fn_diff_day_timestamp); | |
2211 | break; | |
2212 | ||
2213 | case s3select_func_En_t::DATE_DIFF_HOUR: | |
2214 | return S3SELECT_NEW(this,_fn_diff_hour_timestamp); | |
2215 | break; | |
2216 | ||
2217 | case s3select_func_En_t::DATE_DIFF_MINUTE: | |
2218 | return S3SELECT_NEW(this,_fn_diff_minute_timestamp); | |
2219 | break; | |
2220 | ||
2221 | case s3select_func_En_t::DATE_DIFF_SECOND: | |
2222 | return S3SELECT_NEW(this,_fn_diff_second_timestamp); | |
f67539c2 TL |
2223 | break; |
2224 | ||
2225 | case s3select_func_En_t::UTCNOW: | |
20effc67 TL |
2226 | return S3SELECT_NEW(this,_fn_utcnow); |
2227 | break; | |
2228 | ||
2229 | case s3select_func_En_t::AVG: | |
2230 | return S3SELECT_NEW(this,_fn_avg); | |
2231 | break; | |
2232 | ||
2233 | case s3select_func_En_t::LOWER: | |
2234 | return S3SELECT_NEW(this,_fn_lower); | |
2235 | break; | |
2236 | ||
2237 | case s3select_func_En_t::UPPER: | |
2238 | return S3SELECT_NEW(this,_fn_upper); | |
2239 | break; | |
2240 | ||
2241 | case s3select_func_En_t::LENGTH: | |
2242 | return S3SELECT_NEW(this,_fn_charlength); | |
2243 | break; | |
2244 | ||
2245 | case s3select_func_En_t::BETWEEN: | |
2246 | return S3SELECT_NEW(this,_fn_between); | |
2247 | break; | |
2248 | ||
1e59de90 TL |
2249 | case s3select_func_En_t::NOT_BETWEEN: |
2250 | return S3SELECT_NEW(this,_fn_not_between); | |
2251 | break; | |
2252 | ||
20effc67 TL |
2253 | case s3select_func_En_t::IS_NULL: |
2254 | return S3SELECT_NEW(this,_fn_isnull); | |
2255 | break; | |
2256 | ||
2257 | case s3select_func_En_t::IS_NOT_NULL: | |
2258 | return S3SELECT_NEW(this,_fn_is_not_null); | |
2259 | break; | |
2260 | ||
2261 | case s3select_func_En_t::IN: | |
2262 | return S3SELECT_NEW(this,_fn_in); | |
2263 | break; | |
2264 | ||
2265 | case s3select_func_En_t::VERSION: | |
2266 | return S3SELECT_NEW(this,_fn_version); | |
2267 | break; | |
2268 | ||
2269 | case s3select_func_En_t::NULLIF: | |
2270 | return S3SELECT_NEW(this,_fn_nullif); | |
2271 | break; | |
2272 | ||
2273 | case s3select_func_En_t::LIKE: | |
2274 | return S3SELECT_NEW(this,_fn_like,arguments[0],arguments[1]); | |
2275 | break; | |
2276 | ||
2277 | case s3select_func_En_t::COALESCE: | |
2278 | return S3SELECT_NEW(this,_fn_coalesce); | |
2279 | break; | |
2280 | ||
2281 | case s3select_func_En_t::WHEN_THEN: | |
2282 | return S3SELECT_NEW(this,_fn_when_then); | |
2283 | break; | |
2284 | ||
2285 | case s3select_func_En_t::WHEN_VALUE_THEN: | |
2286 | return S3SELECT_NEW(this,_fn_when_value_then); | |
2287 | break; | |
2288 | ||
2289 | case s3select_func_En_t::CASE_WHEN_ELSE: | |
2290 | return S3SELECT_NEW(this,_fn_case_when_else); | |
2291 | break; | |
2292 | ||
2293 | case s3select_func_En_t::STRING: | |
2294 | return S3SELECT_NEW(this,_fn_string); | |
2295 | break; | |
2296 | ||
2297 | case s3select_func_En_t::TRIM: | |
2298 | return S3SELECT_NEW(this,_fn_trim); | |
2299 | break; | |
2300 | ||
2301 | case s3select_func_En_t::LEADING: | |
2302 | return S3SELECT_NEW(this,_fn_leading); | |
2303 | break; | |
2304 | ||
2305 | case s3select_func_En_t::TRAILING: | |
2306 | return S3SELECT_NEW(this,_fn_trailing); | |
f67539c2 TL |
2307 | break; |
2308 | ||
2309 | default: | |
2310 | throw base_s3select_exception("internal error while resolving function-name"); | |
2311 | break; | |
2312 | } | |
2313 | } | |
2314 | ||
20effc67 | 2315 | bool base_statement::is_function() const |
f67539c2 | 2316 | { |
20effc67 | 2317 | if (dynamic_cast<__function*>(const_cast<base_statement*>(this))) |
f67539c2 TL |
2318 | { |
2319 | return true; | |
2320 | } | |
2321 | else | |
2322 | { | |
2323 | return false; | |
2324 | } | |
2325 | } | |
2326 | ||
20effc67 | 2327 | const base_statement* base_statement::get_aggregate() const |
f67539c2 TL |
2328 | { |
2329 | //search for aggregation function in AST | |
20effc67 | 2330 | const base_statement* res = 0; |
f67539c2 TL |
2331 | |
2332 | if (is_aggregate()) | |
2333 | { | |
2334 | return this; | |
2335 | } | |
2336 | ||
2337 | if (left() && (res=left()->get_aggregate())!=0) | |
2338 | { | |
2339 | return res; | |
2340 | } | |
2341 | ||
2342 | if (right() && (res=right()->get_aggregate())!=0) | |
2343 | { | |
2344 | return res; | |
2345 | } | |
2346 | ||
2347 | if (is_function()) | |
2348 | { | |
20effc67 | 2349 | for (auto i : dynamic_cast<__function*>(const_cast<base_statement*>(this))->get_arguments()) |
f67539c2 | 2350 | { |
20effc67 | 2351 | const base_statement* b=i->get_aggregate(); |
f67539c2 TL |
2352 | if (b) |
2353 | { | |
2354 | return b; | |
2355 | } | |
2356 | } | |
2357 | } | |
2358 | return 0; | |
2359 | } | |
2360 | ||
20effc67 | 2361 | bool base_statement::is_column_reference() const |
f67539c2 | 2362 | { |
20effc67 TL |
2363 | if(is_column()) |
2364 | return true; | |
2365 | ||
2366 | if(left()) | |
2367 | return left()->is_column_reference(); | |
2368 | ||
2369 | if(right()) | |
2370 | return right()->is_column_reference(); | |
2371 | ||
2372 | if(is_function()) | |
f67539c2 | 2373 | { |
20effc67 | 2374 | for(auto a : dynamic_cast<__function*>(const_cast<base_statement*>(this))->get_arguments()) |
f67539c2 | 2375 | { |
20effc67 | 2376 | if(a->is_column_reference()) |
f67539c2 | 2377 | return true; |
f67539c2 | 2378 | } |
20effc67 TL |
2379 | } |
2380 | ||
2381 | return false; | |
2382 | } | |
2383 | ||
2384 | bool base_statement::is_nested_aggregate(bool &aggr_flow) const | |
2385 | { | |
2386 | if (is_aggregate()) | |
2387 | { | |
2388 | aggr_flow=true; | |
2389 | for (auto& i : dynamic_cast<__function*>(const_cast<base_statement*>(this))->get_arguments()) | |
f67539c2 | 2390 | { |
20effc67 TL |
2391 | if (i->get_aggregate() != nullptr) |
2392 | { | |
2393 | return true; | |
2394 | } | |
f67539c2 | 2395 | } |
20effc67 TL |
2396 | } |
2397 | ||
2398 | if(left() && left()->is_nested_aggregate(aggr_flow)) | |
2399 | return true; | |
2400 | ||
2401 | if(right() && right()->is_nested_aggregate(aggr_flow)) | |
2402 | return true; | |
2403 | ||
2404 | if (is_function()) | |
2405 | { | |
2406 | for (auto& i : dynamic_cast<__function*>(const_cast<base_statement*>(this))->get_arguments()) | |
f67539c2 | 2407 | { |
20effc67 | 2408 | if (i->get_aggregate() != nullptr) |
f67539c2 | 2409 | { |
20effc67 | 2410 | return i->is_nested_aggregate(aggr_flow); |
f67539c2 TL |
2411 | } |
2412 | } | |
f67539c2 | 2413 | } |
20effc67 | 2414 | |
f67539c2 TL |
2415 | return false; |
2416 | } | |
2417 | ||
1e59de90 TL |
2418 | bool base_statement::is_statement_contain_star_operation() const |
2419 | { | |
2420 | if(is_star_operation()) | |
2421 | return true; | |
2422 | ||
2423 | if(left()) | |
2424 | return left()->is_statement_contain_star_operation(); | |
2425 | ||
2426 | if(right()) | |
2427 | return right()->is_statement_contain_star_operation(); | |
2428 | ||
2429 | if(is_function()) | |
2430 | { | |
2431 | for(auto a : dynamic_cast<__function*>(const_cast<base_statement*>(this))->get_arguments()) | |
2432 | { | |
2433 | if(a->is_star_operation()) | |
2434 | return true; | |
2435 | } | |
2436 | } | |
2437 | ||
2438 | return false; | |
2439 | } | |
2440 | ||
20effc67 TL |
2441 | bool base_statement::mark_aggreagtion_subtree_to_execute() |
2442 | {//purpase:: set aggregation subtree as runnable. | |
2443 | //the function search for aggregation function, and mark its subtree {skip = false} | |
2444 | if (is_aggregate()) | |
2445 | set_skip_non_aggregate(false); | |
2446 | ||
2447 | if (left()) | |
2448 | left()->mark_aggreagtion_subtree_to_execute(); | |
2449 | ||
2450 | if(right()) | |
2451 | right()->mark_aggreagtion_subtree_to_execute(); | |
f67539c2 | 2452 | |
20effc67 | 2453 | if (is_function()) |
f67539c2 | 2454 | { |
20effc67 TL |
2455 | for (auto& i : dynamic_cast<__function*>(this)->get_arguments()) |
2456 | { | |
2457 | i->mark_aggreagtion_subtree_to_execute(); | |
2458 | } | |
f67539c2 TL |
2459 | } |
2460 | ||
20effc67 TL |
2461 | return true; |
2462 | } | |
f67539c2 | 2463 | |
1e59de90 TL |
2464 | void base_statement::push_for_cleanup(std::set<base_statement*>& ast_nodes_to_delete)//semantic loop on each projection |
2465 | { | |
2466 | //placement new is releasing the main-buffer in which all AST nodes | |
2467 | //allocating from it. meaning no calls to destructors. | |
2468 | //the purpose of this routine is to traverse the AST in map all nodes for cleanup. | |
2469 | //the cleanup method will trigger all destructors. | |
2470 | ||
2471 | ast_nodes_to_delete.insert(this); | |
2472 | ||
2473 | if (left()) | |
2474 | left()->push_for_cleanup(ast_nodes_to_delete); | |
2475 | ||
2476 | if(right()) | |
2477 | right()->push_for_cleanup(ast_nodes_to_delete); | |
2478 | ||
2479 | if (is_function()) | |
2480 | { | |
2481 | for (auto& i : dynamic_cast<__function*>(this)->get_arguments()) | |
2482 | { | |
2483 | i->push_for_cleanup(ast_nodes_to_delete); | |
2484 | } | |
2485 | } | |
2486 | } | |
2487 | ||
20effc67 TL |
2488 | #ifdef _ARROW_EXIST |
2489 | void base_statement::extract_columns(parquet_file_parser::column_pos_t &cols,const uint16_t max_columns) | |
2490 | {// purpose: to extract all column-ids from query | |
2491 | if(is_column()) //column reference or column position | |
2492 | {variable* v = dynamic_cast<variable*>(this); | |
1e59de90 | 2493 | if(dynamic_cast<variable*>(this)->m_var_type == variable::var_t::VARIABLE_NAME) |
20effc67 TL |
2494 | {//column reference |
2495 | ||
2496 | if (v->getScratchArea()->get_column_pos(v->get_name().c_str())>=0) | |
2497 | {//column belong to schema | |
2498 | cols.insert( v->getScratchArea()->get_column_pos(v->get_name().c_str() )); | |
2499 | }else { | |
2500 | if(v->getAlias()->search_alias(v->get_name())) | |
2501 | {//column is an alias --> extract columns belong to alias | |
2502 | //TODO cyclic alias to resolve | |
2503 | v->getAlias()->search_alias(v->get_name())->extract_columns(cols,max_columns); | |
2504 | }else { | |
2505 | //column is not alias --> error | |
2506 | std::stringstream ss; | |
2507 | ss << "column " + v->get_name() + " is not part of schema nor an alias"; | |
2508 | throw base_s3select_exception(ss.str(),base_s3select_exception::s3select_exp_en_t::FATAL); | |
2509 | } | |
2510 | } | |
2511 | }else if(v->m_var_type == variable::var_t::STAR_OPERATION) | |
f67539c2 | 2512 | { |
20effc67 TL |
2513 | for(uint16_t i=0;i<max_columns;i++) |
2514 | {//push all columns | |
2515 | cols.insert( i ); | |
f67539c2 | 2516 | } |
20effc67 TL |
2517 | } |
2518 | else { | |
2519 | if (v->get_column_pos()>=max_columns) | |
f67539c2 | 2520 | { |
20effc67 TL |
2521 | std::stringstream ss; |
2522 | ss << "column " + std::to_string( v->get_column_pos()+1 ) + " exceed max number of columns"; | |
2523 | throw base_s3select_exception(ss.str(),base_s3select_exception::s3select_exp_en_t::FATAL); | |
f67539c2 | 2524 | } |
20effc67 | 2525 | cols.insert(v->get_column_pos());//push column positions |
f67539c2 | 2526 | } |
20effc67 TL |
2527 | }else if(is_function()) |
2528 | { | |
2529 | __function* f = (dynamic_cast<__function*>(this)); | |
2530 | bs_stmt_vec_t args = f->get_arguments(); | |
2531 | for (auto prm : args) | |
2532 | {//traverse function args | |
2533 | prm->extract_columns(cols,max_columns); | |
2534 | } | |
2535 | ||
f67539c2 TL |
2536 | } |
2537 | ||
20effc67 TL |
2538 | //keep traversing down the AST |
2539 | if(left()) | |
2540 | left()->extract_columns(cols,max_columns); | |
2541 | ||
2542 | if(right()) | |
2543 | right()->extract_columns(cols,max_columns); | |
f67539c2 | 2544 | } |
20effc67 | 2545 | #endif //_ARROW_EXIST |
f67539c2 TL |
2546 | |
2547 | } //namespace s3selectEngine | |
2548 | ||
2549 | #endif |