| /* |
| * 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.*; |
| import org.apache.synapse.Mediator; |
| import org.apache.synapse.mediators.transform.PayloadFactoryMediator; |
| import org.jaxen.JaxenException; |
| |
| import javax.xml.namespace.QName; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Properties; |
| |
| /** |
| * Creates a payloadFactory mediator from the provided XML configuration |
| * <p/> |
| * <pre> |
| * <payloadFactory> |
| * <format>"xmlstring"</format> |
| * <args> |
| * <arg (value="literal" | expression="xpath")/>* |
| * </args> |
| * </payloadFactory> |
| * </pre> |
| */ |
| public class PayloadFactoryMediatorFactory extends AbstractMediatorFactory { |
| |
| private static final QName PAYLOAD_FACTORY_Q |
| = new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "payloadFactory"); |
| |
| private static final QName FORMAT_Q = new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "format"); |
| private static final QName ARGS_Q = new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "args"); |
| |
| public Mediator createSpecificMediator(OMElement elem, Properties properties) { |
| |
| PayloadFactoryMediator payloadFactoryMediator = new PayloadFactoryMediator(); |
| |
| OMElement formatElem = elem.getFirstChildWithName(FORMAT_Q); |
| |
| if (formatElem != null) { |
| OMElement copy = formatElem.getFirstElement().cloneOMElement(); |
| removeIndentations(copy); |
| payloadFactoryMediator.setFormat(copy.toString()); |
| } else { |
| handleException("format element of payloadFactoryMediator is required"); |
| } |
| |
| OMElement argumentsElem = elem.getFirstChildWithName(ARGS_Q); |
| |
| if (argumentsElem != null) { |
| |
| Iterator itr = argumentsElem.getChildElements(); |
| |
| while (itr.hasNext()) { |
| OMElement argElem = (OMElement) itr.next(); |
| PayloadFactoryMediator.Argument arg = new PayloadFactoryMediator.Argument(); |
| String value; |
| |
| if ((value = argElem.getAttributeValue(ATT_VALUE)) != null) { |
| arg.setValue(value); |
| } else if ((value = argElem.getAttributeValue(ATT_EXPRN)) != null) { |
| |
| if (value.trim().length() == 0) { |
| handleException("Value of 'expression' attribute is required"); |
| } else { |
| try { |
| arg.setExpression(SynapseXPathFactory.getSynapseXPath(argElem, ATT_EXPRN)); |
| } catch (JaxenException e) { |
| handleException("Invalid XPath expression is provided for " + |
| "'expression' attribute: " + value, e); |
| } |
| } |
| |
| } else { |
| handleException("Unsupported arg type. 'value' or 'expression' attribute is " + |
| "required"); |
| } |
| |
| payloadFactoryMediator.addArgument(arg); |
| } |
| } |
| |
| return payloadFactoryMediator; |
| } |
| |
| public QName getTagQName() { |
| return PAYLOAD_FACTORY_Q; |
| } |
| |
| private void removeIndentations(OMElement element) { |
| List<OMText> removables = new ArrayList<OMText>(); |
| removeIndentations(element, removables); |
| for (OMText node : removables) { |
| node.detach(); |
| } |
| } |
| |
| private void removeIndentations(OMElement element, List<OMText> removables) { |
| Iterator children = element.getChildren(); |
| while (children.hasNext()) { |
| Object next = children.next(); |
| if (next instanceof OMText) { |
| OMText text = (OMText) next; |
| if (text.getText().trim().equals("")) { |
| removables.add(text); |
| } |
| } else if (next instanceof OMElement) { |
| removeIndentations((OMElement) next, removables); |
| } |
| } |
| } |
| |
| } |