/*
* 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.synapse.commons.evaluators.config;
import org.apache.synapse.commons.evaluators.Condition;
import org.apache.synapse.commons.evaluators.EvaluatorException;
import org.apache.synapse.commons.evaluators.Evaluator;
import org.apache.synapse.commons.evaluators.EvaluatorConstants;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMAttribute;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;
import javax.xml.namespace.QName;
/**
* This factory creates a {@link Condition} using the following XML configuration.</p>
* <pre>
* <condition priority="priority value as an integer">
* one evaluator, this evaluator can contain other evaluators
* </condition></pre>
*/
public class ConditionFactory {
private Log log = LogFactory.getLog(ConditionFactory.class);
public Condition createCondition(OMElement ruleElement) throws EvaluatorException {
Condition r = new Condition();
OMAttribute priorityAtt = ruleElement.getAttribute(new QName(EvaluatorConstants.PRIORITY));
if (priorityAtt != null) {
int p = Integer.parseInt(priorityAtt.getAttributeValue());
r.setPriority(p);
}
OMElement ce = ruleElement.getFirstElement();
EvaluatorFactory ef = EvaluatorFactoryFinder.getInstance().
findEvaluatorFactory(ce.getLocalName());
if (ef == null) {
handleException("Invalid configuration element: " + ce.getLocalName());
return null;
}
Evaluator evaluator = ef.create(ce);
r.setEvaluator(evaluator);
return r;
}
private void handleException(String message) throws EvaluatorException {
log.error(message);
throw new EvaluatorException(message);
}
}