/*
* 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.cocoon.sitemap.expression;
import org.apache.cocoon.sitemap.objectmodel.ObjectModel;
import org.apache.commons.jexl.Expression;
import org.apache.commons.jexl.ExpressionFactory;
import org.apache.commons.jexl.JexlContext;
import org.apache.commons.jexl.JexlHelper;
public class JexlLanguageInterpreter implements LanguageInterpreter {
@SuppressWarnings("unchecked")
public String resolve(String expression, ObjectModel objectModel) {
Object result = null;
try {
Expression e = ExpressionFactory.createExpression(expression);
JexlContext jc = JexlHelper.createContext();
jc.getVars().putAll(objectModel.getParameters());
result = e.evaluate(jc);
} catch (Exception e1) {
e1.printStackTrace();
}
return result != null ? result.toString() : "";
}
}