org.apache.flink.runtime.jobgraph.IntermediateDataSetID 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.flink.runtime.jobgraph;
import org.apache.flink.runtime.topology.ResultID;
import org.apache.flink.util.AbstractID;
import org.apache.flink.shaded.netty4.io.netty.buffer.ByteBuf;
import java.util.UUID;
/**
* Id identifying {@link IntermediateDataSet}.
*/
public class IntermediateDataSetID extends AbstractID implements ResultID {
private static final long serialVersionUID = 1L;
/**
* Creates an new random intermediate data set ID.
*/
public IntermediateDataSetID() {
super();
}
/**
* Creates a new intermediate data set ID with the bytes of the given ID.
*
* @param from The ID to create this ID from.
*/
public IntermediateDataSetID(AbstractID from) {
super(from);
}
/**
* Creates a new intermediate data set ID with the bytes of the given UUID.
*
* @param from The UUID to create this ID from.
*/
public IntermediateDataSetID(UUID from) {
super(from.getLeastSignificantBits(), from.getMostSignificantBits());
}
private IntermediateDataSetID(long lower, long upper) {
super(lower, upper);
}
public void writeTo(ByteBuf buf) {
buf.writeLong(lowerPart);
buf.writeLong(upperPart);
}
public static IntermediateDataSetID fromByteBuf(ByteBuf buf) {
final long lower = buf.readLong();
final long upper = buf.readLong();
return new IntermediateDataSetID(lower, upper);
}
}