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/*-
* ============LICENSE_START=======================================================
* ONAP - SO
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.mso.bpmn.core;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.stream.Collectors;
/**
* An object that stores data for rollbacks. Data is organized by type. A
* type is simply a string identifier. Multiple types of data may be stored
* in the same object for separate rollback operations.
*/
public class RollbackData implements Serializable {
private static final long serialVersionUID = 1L;
private Map<String, Map<String, Serializable>> dictionary =
new HashMap<>();
/**
* Returns true if the specified type is stored in this object.
*
* @param type the data type
*/
public boolean hasType(String type) {
return dictionary.containsKey(type);
}
/**
* Stores a single item.
*
* @param type the data type
* @param key the key
* @param value the value
*/
public void put(String type, String key, String value) {
Map<String, Serializable> mapForType = dictionary
.computeIfAbsent(type, k -> new HashMap<>());
mapForType.put(key, value);
}
/**
* Gets a single item.
*
* @param type the data type
* @param key the key
* @return the item or null if there is no item for the specified type and key
*/
public Serializable get(String type, String key) {
Map<String, Serializable> mapForType = dictionary.get(type);
if (mapForType == null) {
return null;
}
return mapForType.get(key);
}
/**
* Gets a map containing all items associated with the specified data type.
*
* @param type the data type
* @return a map, or null if there are no items associated with the specified data type
*/
public Map<String, Serializable> get(String type) {
return dictionary.get(type);
}
/**
* Returns a string representation of this object.
*/
@Override
public String toString() {
return dictionary.entrySet().stream().map(entry -> entry.getKey() + entry.getValue())
.collect(Collectors.joining(",", "[", "]"));
}
}
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