org.apache.flink.runtime.state.DirectoryKeyedStateHandle 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;
import javax.annotation.Nonnull;
/**
* This class is a keyed state handle based on a directory. It combines a {@link DirectoryStateHandle} and a
* {@link KeyGroupRange}.
*/
public class DirectoryKeyedStateHandle implements KeyedStateHandle {
private static final long serialVersionUID = 1L;
/** The directory state handle. */
@Nonnull
private final DirectoryStateHandle directoryStateHandle;
/** The key-group range. */
@Nonnull
private final KeyGroupRange keyGroupRange;
public DirectoryKeyedStateHandle(
@Nonnull DirectoryStateHandle directoryStateHandle,
@Nonnull KeyGroupRange keyGroupRange) {
this.directoryStateHandle = directoryStateHandle;
this.keyGroupRange = keyGroupRange;
}
@Nonnull
public DirectoryStateHandle getDirectoryStateHandle() {
return directoryStateHandle;
}
@Nonnull
@Override
public KeyGroupRange getKeyGroupRange() {
return keyGroupRange;
}
@Override
public void discardState() throws Exception {
directoryStateHandle.discardState();
}
@Override
public long getStateSize() {
return directoryStateHandle.getStateSize();
}
@Override
public KeyedStateHandle getIntersection(KeyGroupRange otherKeyGroupRange) {
return this.keyGroupRange.getIntersection(otherKeyGroupRange).getNumberOfKeyGroups() > 0 ? this : null;
}
@Override
public void registerSharedStates(SharedStateRegistry stateRegistry) {
// Nothing to do, this is for local use only.
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
DirectoryKeyedStateHandle that = (DirectoryKeyedStateHandle) o;
if (!getDirectoryStateHandle().equals(that.getDirectoryStateHandle())) {
return false;
}
return getKeyGroupRange().equals(that.getKeyGroupRange());
}
@Override
public int hashCode() {
int result = getDirectoryStateHandle().hashCode();
result = 31 * result + getKeyGroupRange().hashCode();
return result;
}
@Override
public String toString() {
return "DirectoryKeyedStateHandle{" +
"directoryStateHandle=" + directoryStateHandle +
", keyGroupRange=" + keyGroupRange +
'}';
}
}