org.apache.hadoop.hive.serde2.thrift.WriteNullsProtocol 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.thrift;
import org.apache.thrift.TException;
/**
* An interface for TProtocols that actually write out nulls - This should be
* for all those that don't actually use fieldids in the written data like
* TCTLSeparatedProtocol.
*
*/
public interface WriteNullsProtocol {
/**
* Was the last primitive read really a NULL. Need only be called when the
* value of the primitive was 0. ie the protocol should return 0 on nulls and
* the caller will then check if it was actually null For boolean this is
* false.
*/
boolean lastPrimitiveWasNull() throws TException;
/**
* Write a null.
*/
void writeNull() throws TException;
}