import quincy 17.2.0

[ceph.git] / ceph / src / arrow / java / vector / src / main / codegen / templates / NullReader.java

diff --git a/ceph/src/arrow/java/vector/src/main/codegen/templates/NullReader.java b/ceph/src/arrow/java/vector/src/main/codegen/templates/NullReader.java
new file mode 100644 (file)
index 0000000..0c65f9a
--- /dev/null
+++ b/ceph/src/arrow/java/vector/src/main/codegen/templates/NullReader.java
@@ -0,0 +1,147 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import org.apache.arrow.vector.types.pojo.ArrowType.Null;
+import org.apache.arrow.vector.types.pojo.Field;
+
+<@pp.dropOutputFile />
+<@pp.changeOutputFile name="/org/apache/arrow/vector/complex/impl/NullReader.java" />
+
+
+<#include "/@includes/license.ftl" />
+
+package org.apache.arrow.vector.complex.impl;
+
+<#include "/@includes/vv_imports.ftl" />
+
+/**
+ * Source code generated using FreeMarker template ${.template_name}
+ */
+@SuppressWarnings("unused")
+public class NullReader extends AbstractBaseReader implements FieldReader{
+  
+  public static final NullReader INSTANCE = new NullReader();
+  public static final NullReader EMPTY_LIST_INSTANCE = new NullReader(MinorType.NULL);
+  public static final NullReader EMPTY_STRUCT_INSTANCE = new NullReader(MinorType.STRUCT);
+  private MinorType type;
+  
+  private NullReader(){
+    super();
+    type = MinorType.NULL;
+  }
+
+  private NullReader(MinorType type){
+    super();
+    this.type = type;
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return type;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field("", FieldType.nullable(new Null()), null);
+  }
+
+  public void copyAsValue(StructWriter writer) {}
+
+  public void copyAsValue(ListWriter writer) {}
+
+  public void copyAsValue(UnionWriter writer) {}
+
+  <#list vv.types as type><#list type.minor as minor><#assign name = minor.class?cap_first />
+  public void read(${name}Holder holder){
+    throw new UnsupportedOperationException("NullReader cannot write into non-nullable holder");
+  }
+
+  public void read(Nullable${name}Holder holder){
+    holder.isSet = 0;
+  }
+
+  public void read(int arrayIndex, ${name}Holder holder){
+    throw new ArrayIndexOutOfBoundsException();
+  }
+  
+  public void copyAsValue(${minor.class}Writer writer){}
+  public void copyAsField(String name, ${minor.class}Writer writer){}
+
+  public void read(int arrayIndex, Nullable${name}Holder holder){
+    throw new ArrayIndexOutOfBoundsException();
+  }
+  </#list></#list>
+  
+  public int size(){
+    return 0;
+  }
+  
+  public boolean isSet(){
+    return false;
+  }
+  
+  public boolean next(){
+    return false;
+  }
+  
+  public RepeatedStructReader struct(){
+    return this;
+  }
+  
+  public RepeatedListReader list(){
+    return this;
+  }
+  
+  public StructReader struct(String name){
+    return this;
+  }
+  
+  public ListReader list(String name){
+    return this;
+  }
+  
+  public FieldReader reader(String name){
+    return this;
+  }
+  
+  public FieldReader reader(){
+    return this;
+  }
+  
+  private void fail(String name){
+    throw new IllegalArgumentException(String.format("You tried to read a %s type when you are using a ValueReader of type %s.", name, this.getClass().getSimpleName()));
+  }
+  
+  <#list ["Object", "BigDecimal", "Short", "Integer", "Long", "Boolean",
+          "LocalDateTime", "Duration", "Period", "Double", "Float",
+          "Character", "Text", "String", "Byte", "byte[]", "PeriodDuration"] as friendlyType>
+  <#assign safeType=friendlyType />
+  <#if safeType=="byte[]"><#assign safeType="ByteArray" /></#if>
+  
+  public ${friendlyType} read${safeType}(int arrayIndex){
+    return null;
+  }
+  
+  public ${friendlyType} read${safeType}(){
+    return null;
+  }
+  </#list>
+  
+}
+
+
+