/*
* Copyright 2013, 2014 Deutsche Nationalbibliothek
*
* 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.
*/
package org.culturegraph.mf.metamorph.functions;
import org.culturegraph.mf.metamorph.api.helpers.AbstractSimpleStatelessFunction;
/**
* Base class for functions which look up values in maps.
*
* @author Markus Michael Geipel
*/
abstract class AbstractLookup extends AbstractSimpleStatelessFunction {
protected final String lookup(final String key) {
final String returnValue;
if (getMapName() == null) {
returnValue = getLocalValue(key);
} else {
returnValue = getValue(getMapName(), key);
}
return returnValue;
}
}