ceph/src/rocksdb/java/rocksjni/comparator.cc

   1 // Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under both the GPLv2 (found in the
   3 //  COPYING file in the root directory) and Apache 2.0 License
   4 //  (found in the LICENSE.Apache file in the root directory).
   5 //
   6 // This file implements the "bridge" between Java and C++ for
   7 // ROCKSDB_NAMESPACE::Comparator.
   8
   9 #include <jni.h>
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12
  13 #include <functional>
  14 #include <string>
  15
  16 #include "include/org_rocksdb_AbstractComparator.h"
  17 #include "include/org_rocksdb_NativeComparatorWrapper.h"
  18 #include "rocksjni/comparatorjnicallback.h"
  19 #include "rocksjni/cplusplus_to_java_convert.h"
  20 #include "rocksjni/portal.h"
  21
  22 /*
  23  * Class:     org_rocksdb_AbstractComparator
  24  * Method:    createNewComparator
  25  * Signature: (J)J
  26  */
  27 jlong Java_org_rocksdb_AbstractComparator_createNewComparator(
  28     JNIEnv* env, jobject jcomparator, jlong copt_handle) {
  29   auto* copt =
  30       reinterpret_cast<ROCKSDB_NAMESPACE::ComparatorJniCallbackOptions*>(
  31           copt_handle);
  32   auto* c =
  33       new ROCKSDB_NAMESPACE::ComparatorJniCallback(env, jcomparator, copt);
  34   return GET_CPLUSPLUS_POINTER(c);
  35 }
  36
  37 /*
  38  * Class:     org_rocksdb_AbstractComparator
  39  * Method:    usingDirectBuffers
  40  * Signature: (J)Z
  41  */
  42 jboolean Java_org_rocksdb_AbstractComparator_usingDirectBuffers(JNIEnv*,
  43                                                                 jobject,
  44                                                                 jlong jhandle) {
  45   auto* c =
  46       reinterpret_cast<ROCKSDB_NAMESPACE::ComparatorJniCallback*>(jhandle);
  47   return static_cast<jboolean>(c->m_options->direct_buffer);
  48 }
  49
  50 /*
  51  * Class:     org_rocksdb_NativeComparatorWrapper
  52  * Method:    disposeInternal
  53  * Signature: (J)V
  54  */
  55 void Java_org_rocksdb_NativeComparatorWrapper_disposeInternal(
  56     JNIEnv* /*env*/, jobject /*jobj*/, jlong jcomparator_handle) {
  57   auto* comparator =
  58       reinterpret_cast<ROCKSDB_NAMESPACE::Comparator*>(jcomparator_handle);
  59   delete comparator;
  60 }