/*
* 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.nifi.controller.state;
import java.util.Collections;
import java.util.Map;
import org.apache.nifi.components.state.StateMap;
public class StandardStateMap implements StateMap {
private final Map<String, String> stateValues;
private final long version;
public StandardStateMap(final Map<String, String> stateValues, final long version) {
this.stateValues = Collections.unmodifiableMap(stateValues == null ? Collections.<String, String> emptyMap() : stateValues);
this.version = version;
}
@Override
public long getVersion() {
return version;
}
@Override
public String get(final String key) {
return stateValues.get(key);
}
@Override
public Map<String, String> toMap() {
return stateValues;
}
@Override
public String toString() {
return "StandardStateMap[version=" + version + ", values=" + stateValues + "]";
}
}