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.builder.xml.XsltBuilder;
025 import org.apache.camel.component.ResourceBasedComponent;
026 import org.apache.camel.converter.jaxp.XmlConverter;
027 import org.apache.camel.impl.ProcessorEndpoint;
028 import org.springframework.core.io.Resource;
029
030 /**
031 * An <a href="http://camel.apache.org/xslt.html">XSLT Component</a>
032 * for performing XSLT transforms of messages
033 *
034 * @version $Revision: 749939 $
035 */
036 public class XsltComponent extends ResourceBasedComponent {
037 private XmlConverter xmlConverter;
038
039 public XmlConverter getXmlConverter() {
040 return xmlConverter;
041 }
042
043 public void setXmlConverter(XmlConverter xmlConverter) {
044 this.xmlConverter = xmlConverter;
045 }
046
047 @SuppressWarnings("unchecked")
048 protected Endpoint createEndpoint(String uri, String remaining, Map parameters) throws Exception {
049 Resource resource = resolveMandatoryResource(remaining);
050 if (log.isDebugEnabled()) {
051 log.debug(this + " using schema resource: " + resource);
052 }
053 XsltBuilder xslt = newInstance(XsltBuilder.class);
054
055 // lets allow the converter to be configured
056 XmlConverter converter = null;
057 String converterName = getAndRemoveParameter(parameters, "converter", String.class);
058 if (converterName != null) {
059 converter = mandatoryLookup(converterName, XmlConverter.class);
060 }
061 if (converter == null) {
062 converter = getXmlConverter();
063 }
064 if (converter != null) {
065 xslt.setConverter(converter);
066 }
067
068 String transformerFactoryClassName = getAndRemoveParameter(parameters, "transformerFactoryClass", String.class);
069 TransformerFactory factory = null;
070 if (transformerFactoryClassName != null) {
071 // provide the class loader of this component to work in OSGi environments
072 Class factoryClass = getCamelContext().getClassResolver().resolveClass(transformerFactoryClassName, XsltComponent.class.getClassLoader());
073 if (factoryClass != null) {
074 factory = (TransformerFactory) newInstance(factoryClass);
075 } else {
076 log.warn("Cannot 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 }