joynr.types.ChangeType Maven / Gradle / Ivy
/*
*
* Copyright (C) 2011 - 2018 BMW Car IT GmbH
*
* 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.
*/
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package joynr.types;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
/**
* The type of a change.
*/
public enum ChangeType {
/**
* Entry was added. There was no entry with the same key before.
*/
ADD,
/**
* Entry was updated. An entry with the key already existed.
*/
UPDATE,
/**
* Entry was removed.
*/
REMOVE
;
public static final int MAJOR_VERSION = 0;
public static final int MINOR_VERSION = 0;
static final Map ordinalToEnumValues = new HashMap<>();
static{
ordinalToEnumValues.put(0, ADD);
ordinalToEnumValues.put(1, UPDATE);
ordinalToEnumValues.put(2, REMOVE);
}
/**
* Get the matching enum for an ordinal number
* @param ordinal The ordinal number
* @return The matching enum for the given ordinal number
*/
public static ChangeType getEnumValue(Integer ordinal) {
return ordinalToEnumValues.get(ordinal);
}
/**
* Get the matching ordinal number for this enum
* @return The ordinal number representing this enum
*/
public Integer getOrdinal() {
// TODO should we use a bidirectional map from a third-party library?
Integer ordinal = null;
for(Entry entry : ordinalToEnumValues.entrySet()) {
if(this == entry.getValue()) {
ordinal = entry.getKey();
break;
}
}
return ordinal;
}
}