/*
* 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.event.task;
import java.io.IOException;
import org.apache.flink.core.memory.DataInputView;
import org.apache.flink.core.memory.DataOutputView;
import org.apache.flink.runtime.event.TaskEvent;
/**
* This class provides a simple implementation of an event that holds an integer value.
*
*/
public class IntegerTaskEvent extends TaskEvent {
/**
* The integer value transported by this integer task event.
*/
private int value = -1;
/**
* Default constructor (should only be used for deserialization).
*/
public IntegerTaskEvent() {
// default constructor implementation.
// should only be used for deserialization
}
/**
* Constructs a new integer task event.
*
* @param value
* the integer value to be transported inside this integer task event
*/
public IntegerTaskEvent(final int value) {
this.value = value;
}
/**
* Returns the stored integer value.
*
* @return the stored integer value or <code>-1</code> if no value has been set
*/
public int getInteger() {
return this.value;
}
@Override
public void write(final DataOutputView out) throws IOException {
out.writeInt(this.value);
}
@Override
public void read(final DataInputView in) throws IOException {
this.value = in.readInt();
}
@Override
public int hashCode() {
return this.value;
}
@Override
public boolean equals(final Object obj) {
if (!(obj instanceof IntegerTaskEvent)) {
return false;
}
final IntegerTaskEvent taskEvent = (IntegerTaskEvent) obj;
return (this.value == taskEvent.getInteger());
}
}