001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.component.xslt;
018
019 import java.util.Map;
020
021 import javax.xml.transform.TransformerFactory;
022
023 import org.apache.camel.Endpoint;
024 import org.apache.camel.Exchange;
025 import org.apache.camel.builder.xml.XsltBuilder;
026 import org.apache.camel.component.ResourceBasedComponent;
027 import org.apache.camel.converter.jaxp.XmlConverter;
028 import org.apache.camel.impl.ProcessorEndpoint;
029 import org.apache.camel.util.ObjectHelper;
030 import org.springframework.core.io.Resource;
031
032 /**
033 * An <a href="http://activemq.apache.org/camel/xslt.html">XSLT Component</a>
034 * for performing XSLT transforms of messages
035 *
036 * @version $Revision: 734346 $
037 */
038 public class XsltComponent extends ResourceBasedComponent {
039 private XmlConverter xmlConverter;
040
041 public XmlConverter getXmlConverter() {
042 return xmlConverter;
043 }
044
045 public void setXmlConverter(XmlConverter xmlConverter) {
046 this.xmlConverter = xmlConverter;
047 }
048
049 protected Endpoint<Exchange> createEndpoint(String uri, String remaining, Map parameters) throws Exception {
050 Resource resource = resolveMandatoryResource(remaining);
051 if (log.isDebugEnabled()) {
052 log.debug(this + " using schema resource: " + resource);
053 }
054 XsltBuilder xslt = newInstance(XsltBuilder.class);
055
056 // lets allow the converter to be configured
057 XmlConverter converter = null;
058 String converterName = getAndRemoveParameter(parameters, "converter", String.class);
059 if (converterName != null) {
060 converter = mandatoryLookup(converterName, XmlConverter.class);
061 }
062 if (converter == null) {
063 converter = getXmlConverter();
064 }
065 if (converter != null) {
066 xslt.setConverter(converter);
067 }
068
069 String transformerFactoryClassName = getAndRemoveParameter(parameters, "transformerFactoryClass", String.class);
070 TransformerFactory factory = null;
071 if (transformerFactoryClassName != null) {
072 Class factoryClass = ObjectHelper.loadClass(transformerFactoryClassName);
073 if (factoryClass != null) {
074 factory = (TransformerFactory) newInstance(factoryClass);
075 } else {
076 log.warn("Can't find the TransformerFactoryClass with the class name " + transformerFactoryClassName);
077 }
078 }
079
080 String transformerFactoryName = getAndRemoveParameter(parameters, "transformerFactory", String.class);
081 if (transformerFactoryName != null) {
082 factory = mandatoryLookup(transformerFactoryName, TransformerFactory.class);
083 }
084
085 if (factory != null) {
086 xslt.getConverter().setTransformerFactory(factory);
087 }
088 xslt.setTransformerInputStream(resource.getInputStream());
089 configureXslt(xslt, uri, remaining, parameters);
090 return new ProcessorEndpoint(uri, this, xslt);
091 }
092
093 protected void configureXslt(XsltBuilder xslt, String uri, String remaining, Map parameters) throws Exception {
094 setProperties(xslt, parameters);
095 }
096 }