/*
* 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.source.*;
import org.apache.synapse.commons.evaluators.EvaluatorConstants;
import org.apache.synapse.commons.evaluators.EvaluatorException;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMAttribute;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import javax.xml.namespace.QName;
public abstract class TextProcessingEvaluatorFactory implements EvaluatorFactory {
protected Log log = LogFactory.getLog(this.getClass());
protected SourceTextRetriever getSourceTextRetriever(OMElement e) throws EvaluatorException {
OMAttribute typeAttr = e.getAttribute(new QName(EvaluatorConstants.TYPE));
OMAttribute sourceAttr = e.getAttribute(new QName(EvaluatorConstants.SOURCE));
SourceTextRetriever textRetriever = null;
if (typeAttr != null) {
String value = typeAttr.getAttributeValue();
if (value.equals(EvaluatorConstants.HEADER)) {
if (sourceAttr != null) {
textRetriever = new HeaderTextRetriever(sourceAttr.getAttributeValue());
} else {
handleException(EvaluatorConstants.SOURCE + " attribute is required");
}
} else if (value.equals(EvaluatorConstants.PARAM)) {
if (sourceAttr != null) {
textRetriever = new ParameterTextRetriever(sourceAttr.getAttributeValue());
} else {
handleException(EvaluatorConstants.SOURCE + " attribute is required");
}
} else if (value.equals(EvaluatorConstants.URL)) {
textRetriever = new URLTextRetriever();
if (sourceAttr != null) {
((URLTextRetriever) textRetriever).setSource(sourceAttr.getAttributeValue());
}
} else if (value.equals(EvaluatorConstants.PROPERTY)) {
if (sourceAttr != null) {
textRetriever = new PropertyTextRetriever(sourceAttr.getAttributeValue());
} else {
handleException(EvaluatorConstants.SOURCE + " attribute is required");
}
} else if (value.equals(EvaluatorConstants.SOAP)) {
if (sourceAttr != null) {
textRetriever = new SOAPEnvelopeTextRetriever(sourceAttr.getAttributeValue());
} else {
handleException(EvaluatorConstants.SOURCE + " attribute is required");
}
} else {
handleException("Unknown equal evaluator type: " + value);
}
} else {
if (sourceAttr != null) {
textRetriever = new HeaderTextRetriever(sourceAttr.getAttributeValue());
} else {
handleException(EvaluatorConstants.SOURCE + " attribute is required");
}
}
return textRetriever;
}
protected void handleException(String message) throws EvaluatorException {
log.error(message);
throw new EvaluatorException(message);
}
}