vector/src/main/codegen/templates/BaseReader.java

/*
 * 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.
 */

<@pp.dropOutputFile />
<@pp.changeOutputFile name="/org/apache/arrow/vector/complex/reader/BaseReader.java" />


<#include "/@includes/license.ftl" />

package org.apache.arrow.vector.complex.reader;

<#include "/@includes/vv_imports.ftl" />

/**
 * Source code generated using FreeMarker template ${.template_name}
 */
@SuppressWarnings("unused")
public interface BaseReader extends Positionable{
  Field getField();
  MinorType getMinorType();
  void reset();
  void read(UnionHolder holder);
  void read(int index, UnionHolder holder);
  void copyAsValue(UnionWriter writer);
  void read(DenseUnionHolder holder);
  void read(int index, DenseUnionHolder holder);
  void copyAsValue(DenseUnionWriter writer);
  boolean isSet();

  public interface StructReader extends BaseReader, Iterable<String>{
    FieldReader reader(String name);
  }

  public interface RepeatedStructReader extends StructReader{
    boolean next();
    int size();
    void copyAsValue(StructWriter writer);
  }

  public interface ListReader extends BaseReader{
    FieldReader reader();
  }

  public interface RepeatedListReader extends ListReader{
    boolean next();
    int size();
    void copyAsValue(ListWriter writer);
  }

  public interface MapReader extends BaseReader{
    FieldReader reader();
  }

  public interface RepeatedMapReader extends MapReader{
    boolean next();
    int size();
    void copyAsValue(MapWriter writer);
  }

  public interface ScalarReader extends
  <#list vv.types as type><#list type.minor as minor><#assign name = minor.class?cap_first /> ${name}Reader, </#list></#list>
  ExtensionReader, BaseReader {}

  interface ComplexReader{
    StructReader rootAsStruct();
    ListReader rootAsList();
    boolean rootIsStruct();
    boolean ok();
  }
}