| /* |
| * 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.config.xml; |
| |
| import org.apache.axiom.om.OMAttribute; |
| import org.apache.axiom.om.OMElement; |
| import org.apache.synapse.Mediator; |
| import org.apache.synapse.SynapseException; |
| import org.apache.synapse.mediators.ext.AnnotatedCommandMediator; |
| import org.apache.synapse.util.xpath.SynapseXPath; |
| import org.jaxen.JaxenException; |
| |
| import javax.xml.namespace.QName; |
| import java.util.Iterator; |
| import java.util.Properties; |
| |
| /** |
| * Creates an instance of a AnnotatedCommand mediator using XML configuration specified |
| * <p/> |
| * <pre> |
| * <annotatedCommand name="class-name"> |
| * <property name="string" value="literal"> |
| * either literal or XML child |
| * </property> |
| * <property name="string" expression="XPATH expression"/> |
| * </annoatedCommand> |
| * </pre> |
| */ |
| public class AnnotatedCommandMediatorFactory extends AbstractMediatorFactory { |
| |
| private static final QName ANNOTATED_COMMAND_Q = |
| new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "annotatedCommand"); |
| |
| public Mediator createSpecificMediator(OMElement elem, Properties properties) { |
| |
| AnnotatedCommandMediator pojoMediator = new AnnotatedCommandMediator(); |
| |
| // Class name of the Command object should be present |
| OMAttribute name = elem.getAttribute(ATT_NAME); |
| if (name == null) { |
| String msg = "The name of the actual POJO command implementation class" + |
| " is a required attribute"; |
| log.error(msg); |
| throw new SynapseException(msg); |
| } |
| |
| // load the class for the command object |
| try { |
| pojoMediator.setCommand( |
| getClass().getClassLoader().loadClass(name.getAttributeValue())); |
| } catch (ClassNotFoundException e) { |
| handleException("Unable to load the class specified as the command " |
| + name.getAttributeValue(), e); |
| } |
| |
| // setting the properties to the command. these properties will be instantiated |
| // at the mediation time |
| for (Iterator it = elem.getChildElements(); it.hasNext();) { |
| OMElement child = (OMElement) it.next(); |
| if("property".equals(child.getLocalName())) { |
| |
| String propName = child.getAttribute(ATT_NAME).getAttributeValue(); |
| if (propName == null) { |
| handleException( |
| "A POJO command mediator property must specify the name attribute"); |
| } else { |
| if (child.getAttribute(ATT_EXPRN) != null) { |
| SynapseXPath xpath; |
| try { |
| xpath = SynapseXPathFactory.getSynapseXPath(child, ATT_EXPRN); |
| pojoMediator.addMessageSetterProperty(propName, xpath); |
| } catch (JaxenException e) { |
| handleException("Error instantiating XPath expression : " + |
| child.getAttribute(ATT_EXPRN), e); |
| } |
| } else { |
| if (child.getAttribute(ATT_VALUE) != null) { |
| pojoMediator.addStaticSetterProperty(propName, |
| child.getAttribute(ATT_VALUE).getAttributeValue()); |
| } else { |
| handleException("A POJO mediator property must specify either " + |
| "name and expression attributes, or name and value attributes"); |
| } |
| } |
| } |
| } |
| } |
| |
| return pojoMediator; |
| } |
| |
| public QName getTagQName() { |
| return ANNOTATED_COMMAND_Q; |
| } |
| |
| } |
| |