org.apache.flink.runtime.state.heap.StateUID 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.metainfo.StateMetaInfoSnapshot;
import javax.annotation.Nonnull;
import java.util.Objects;
/**
* Unique identifier for registered state in this backend.
*/
final class StateUID {
@Nonnull
private final String stateName;
@Nonnull
private final StateMetaInfoSnapshot.BackendStateType stateType;
StateUID(@Nonnull String stateName, @Nonnull StateMetaInfoSnapshot.BackendStateType stateType) {
this.stateName = stateName;
this.stateType = stateType;
}
@Nonnull
public String getStateName() {
return stateName;
}
@Nonnull
public StateMetaInfoSnapshot.BackendStateType getStateType() {
return stateType;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
StateUID uid = (StateUID) o;
return Objects.equals(getStateName(), uid.getStateName()) &&
getStateType() == uid.getStateType();
}
@Override
public int hashCode() {
return Objects.hash(getStateName(), getStateType());
}
public static StateUID of(@Nonnull String stateName, @Nonnull StateMetaInfoSnapshot.BackendStateType stateType) {
return new StateUID(stateName, stateType);
}
}