org.hibernate.validator.internal.engine.messageinterpolation.el.MapBasedVariableMapper Maven / Gradle / Ivy
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* Copyright 2012, Red Hat, Inc. and/or its affiliates, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.hibernate.validator.internal.engine.messageinterpolation.el;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import javax.el.ValueExpression;
import javax.el.VariableMapper;
/**
* @author Hardy Ferentschik
*/
public class MapBasedVariableMapper extends VariableMapper {
private Map map = Collections.emptyMap();
@Override
public ValueExpression resolveVariable(String variable) {
return map.get( variable );
}
@Override
public ValueExpression setVariable(String variable, ValueExpression expression) {
if ( map.isEmpty() ) {
map = new HashMap();
}
return map.put( variable, expression );
}
}