org.apache.hadoop.hive.serde2.lazy.LazyObjectBase Maven / Gradle / Ivy
/*
* 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.
*/
package org.apache.hadoop.hive.serde2.lazy;
public interface LazyObjectBase {
/**
* Set the data for this LazyObjectBase. We take ByteArrayRef instead of byte[] so
* that we will be able to drop the reference to byte[] by a single
* assignment. The ByteArrayRef object can be reused across multiple rows.
*
* @param bytes
* The wrapper of the byte[].
* @param start
* The start position inside the bytes.
* @param length
* The length of the data, starting from "start"
* @see ByteArrayRef
*/
void init(ByteArrayRef bytes, int start, int length);
/**
* called for null binary, hbase columns, for example
*/
void setNull();
/**
* If the LazyObjectBase is a primitive Object, then deserialize it and return the
* actual primitive Object. Otherwise (array, map, struct), return this.
*/
Object getObject();
}