| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed 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.components.xpointer; |
| |
| import org.apache.cocoon.xml.dom.DOMStreamer; |
| import org.apache.cocoon.ResourceNotFoundException; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Implements support for shorthand XPointers (= id-based lookup). We treat them here as if they |
| * were a pointerpart too. |
| * |
| * <p>Note that although this is implemented here, this feature depends on the presence of a DTD, |
| * and a validating parser. Currently, this means its unuseable within Cocoon. |
| */ |
| public class ShorthandPart implements PointerPart { |
| private String shorthand; |
| |
| public ShorthandPart(String shorthand) { |
| this.shorthand = shorthand; |
| } |
| |
| public boolean process(XPointerContext xpointerContext) throws SAXException, ResourceNotFoundException { |
| Document document = xpointerContext.getDocument(); |
| Element element = document.getElementById(shorthand); |
| if (element != null) { |
| DOMStreamer streamer = new DOMStreamer(); |
| streamer.setConsumer(xpointerContext.getXmlConsumer()); |
| streamer.stream(element); |
| return true; |
| } else { |
| if (xpointerContext.getLogger().isDebugEnabled()) |
| xpointerContext.getLogger().debug("XPointer: found no element with id " + shorthand + " in document " + xpointerContext.getSource().getURI()); |
| } |
| return false; |
| } |
| } |