| /* |
| * 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.cocoon.portal.pluto.deployment; |
| |
| import javax.xml.transform.TransformerException; |
| |
| import org.apache.cocoon.portal.bridges.ServletContextProviderImpl; |
| import org.apache.cocoon.portal.deployment.DeploymentException; |
| import org.apache.cocoon.xml.dom.DOMUtil; |
| import org.apache.xpath.XPathAPI; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| /** |
| * Utilities for manipulating the portlet.xml deployment descriptor. |
| * |
| * @version $Id$ |
| */ |
| public class PortletRewriter { |
| |
| /** |
| * Check if the portlet is using the portals bridges project and add |
| * information about Cocoon servlet context provider. Currently only |
| * the Struts bridge is supported. |
| */ |
| public static boolean process(Document document) |
| throws DeploymentException { |
| boolean changed = false; |
| final Element root = document.getDocumentElement(); |
| final NodeList nodes = root.getChildNodes(); |
| try { |
| for(int i=0; i<nodes.getLength(); i++) { |
| final Node current = nodes.item(i); |
| if ( current.getNodeType() == Node.ELEMENT_NODE |
| && ("portlet".equals(current.getLocalName()) || "portlet".equals(current.getNodeName()))) { |
| final Element e = (Element)current; |
| final Element classElement = (Element)XPathAPI.selectSingleNode(e, "*[local-name()='portlet-class']"); |
| if ( classElement != null ) { |
| changed = true; |
| final String className = DOMUtil.getValueOfNode(classElement); |
| if ( className.equals("org.apache.portals.bridges.struts.StrutsPortlet") ) { |
| Element initParamName = (Element)XPathAPI.selectSingleNode(e, "*[local-name()='init-param']/*[local-name()='name' and contains(child::text(), \"ServletContextProvider\")]"); |
| Element initParam; |
| if ( initParamName == null ) { |
| initParam = document.createElementNS(e.getNamespaceURI(), "init-param"); |
| Element name = document.createElementNS(e.getNamespaceURI(), "name"); |
| initParam.appendChild(name); |
| name.appendChild(document.createTextNode("ServletContextProvider")); |
| e.insertBefore(initParam, e.getFirstChild()); |
| } else { |
| initParam = (Element)initParamName.getParentNode(); |
| } |
| Element value = (Element)XPathAPI.selectSingleNode(initParam, "*[local-name()='value']"); |
| if ( value == null ) { |
| value = document.createElementNS(e.getNamespaceURI(), "value"); |
| initParam.appendChild(value); |
| } else { |
| while ( value.hasChildNodes() ) { |
| value.removeChild(value.getFirstChild()); |
| } |
| } |
| value.appendChild(document.createTextNode(ServletContextProviderImpl.class.getName())); |
| } |
| } |
| } |
| } |
| } catch (TransformerException te) { |
| throw new DeploymentException("Unable to process portlet.xml.", te); |
| } |
| return changed; |
| } |
| |
| } |
