| /* |
| * 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.woody.binding; |
| |
| import org.apache.avalon.framework.service.ServiceManager; |
| import org.apache.cocoon.components.source.SourceUtil; |
| import org.apache.cocoon.woody.util.DomHelper; |
| import org.apache.excalibur.source.Source; |
| import org.apache.excalibur.source.SourceResolver; |
| import org.apache.excalibur.xml.xpath.XPathProcessor; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.DocumentFragment; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| /** |
| * InsertNodeJXPathBindingBuilder provides a helper class for the Factory |
| * implemented in {@link JXPathBindingManager} that helps construct the |
| * actual {@link InsertNodeJXPathBinding} out of the configuration in the |
| * provided configElement which looks like: |
| * <pre><code> |
| * <wb:insert-node> |
| * <!-- in here comes a template that will be inserted in the target |
| * document --> |
| * </wb:insert-node> |
| * </code></pre> |
| * |
| * @version CVS $Id$ |
| */ |
| public class InsertNodeJXPathBindingBuilder |
| extends JXPathBindingBuilderBase { |
| |
| /** |
| * Creates an instance of {@link InsertNodeJXPathBinding} configured |
| * with the nested template of the bindingElm. |
| */ |
| public JXPathBindingBase buildBinding( |
| Element bindingElm, |
| JXPathBindingManager.Assistant assistant) throws BindingException { |
| |
| try { |
| CommonAttributes commonAtts = JXPathBindingBuilderBase.getCommonAttributes(bindingElm); |
| |
| DocumentFragment domTemplate = null; |
| |
| String src = bindingElm.getAttribute("src"); |
| if (!src.equals("")) { |
| ServiceManager manager = assistant.getServiceManager(); |
| SourceResolver sourceResolver = (SourceResolver)manager.lookup(SourceResolver.ROLE); |
| Source source = null; |
| try { |
| source = sourceResolver.resolveURI(src); |
| Document document = SourceUtil.toDOM(source); |
| Element element = document.getDocumentElement(); |
| |
| String xpath = bindingElm.getAttribute("xpath"); |
| if (!xpath.equals("")) { |
| XPathProcessor xpathProcessor = (XPathProcessor)manager.lookup(XPathProcessor.ROLE); |
| try { |
| Node node = xpathProcessor.selectSingleNode(document, xpath); |
| if (node == null) |
| throw new BindingException("XPath expression \"" + xpath + "\" didn't return a result."); |
| if (!(node instanceof Element)) |
| throw new BindingException("XPath expression \"" + xpath + "\" did not return an element node."); |
| element = (Element)node; |
| } finally { |
| manager.release(xpathProcessor); |
| } |
| } |
| domTemplate = document.createDocumentFragment(); |
| domTemplate.appendChild(element); |
| } finally { |
| if (source != null) |
| sourceResolver.release(source); |
| manager.release(sourceResolver); |
| } |
| } else { |
| domTemplate = bindingElm.getOwnerDocument().createDocumentFragment(); |
| NodeList nested = bindingElm.getChildNodes(); |
| int size = nested.getLength(); |
| for (int i = 0; i < size; i++) { |
| domTemplate.appendChild(nested.item(i).cloneNode(true)); |
| } |
| } |
| |
| return new InsertNodeJXPathBinding(commonAtts, domTemplate); |
| } catch (Exception e) { |
| throw new BindingException("Error building the insert-node binding defined at " + DomHelper.getLocation(bindingElm), e); |
| } |
| } |
| } |