org.apache.flink.runtime.state.heap.InternalKeyContextImpl 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.state.heap;
import org.apache.flink.runtime.state.KeyGroupRange;
import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;
/**
* The default {@link InternalKeyContext} implementation.
*
* @param Type of the key.
*/
public class InternalKeyContextImpl implements InternalKeyContext {
/** Range of key-groups for which this backend is responsible. */
private final KeyGroupRange keyGroupRange;
/** The number of key-groups aka max parallelism. */
private final int numberOfKeyGroups;
/** The currently active key. */
private K currentKey;
/** The key group of the currently active key. */
private int currentKeyGroupIndex;
public InternalKeyContextImpl(@Nonnull KeyGroupRange keyGroupRange, @Nonnegative int numberOfKeyGroups) {
this.keyGroupRange = keyGroupRange;
this.numberOfKeyGroups = numberOfKeyGroups;
}
@Override
public K getCurrentKey() {
return currentKey;
}
@Override
public int getCurrentKeyGroupIndex() {
return currentKeyGroupIndex;
}
@Override
public int getNumberOfKeyGroups() {
return numberOfKeyGroups;
}
@Override
public KeyGroupRange getKeyGroupRange() {
return keyGroupRange;
}
@Override
public void setCurrentKey(@Nonnull K currentKey) {
this.currentKey = currentKey;
}
@Override
public void setCurrentKeyGroupIndex(int currentKeyGroupIndex) {
this.currentKeyGroupIndex = currentKeyGroupIndex;
}
}