org.apache.cassandra.db.WriteResponse Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of cassandra-all Show documentation
Show all versions of cassandra-all Show documentation
The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* 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.cassandra.db;
import java.io.IOException;
import org.apache.cassandra.io.IVersionedSerializer;
import org.apache.cassandra.io.util.DataInputPlus;
import org.apache.cassandra.io.util.DataOutputPlus;
import org.apache.cassandra.net.MessageOut;
import org.apache.cassandra.net.MessagingService;
/*
* This empty response is sent by a replica to inform the coordinator that the write succeeded
*/
public final class WriteResponse
{
public static final Serializer serializer = new Serializer();
private static final WriteResponse instance = new WriteResponse();
private WriteResponse()
{
}
public static MessageOut createMessage()
{
return new MessageOut<>(MessagingService.Verb.REQUEST_RESPONSE, instance, serializer);
}
public static class Serializer implements IVersionedSerializer
{
public void serialize(WriteResponse wm, DataOutputPlus out, int version) throws IOException
{
}
public WriteResponse deserialize(DataInputPlus in, int version) throws IOException
{
return instance;
}
public long serializedSize(WriteResponse response, int version)
{
return 0;
}
}
}