ParamSaxBufferFactory


1   /*
2    * Copyright 2004 Outerthought bvba and Schaubroeck nv
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.outerj.daisy.frontend.util;
17  
18  import org.apache.cocoon.xml.ParamSaxBuffer;
19  import org.apache.cocoon.xml.IncludeXMLConsumer;
20  import org.xml.sax.XMLReader  ;
21  import org.xml.sax.InputSource  ;
22  
23  import javax.xml.parsers.SAXParserFactory  ;
24  import javax.xml.parsers.SAXParser  ;
25  import java.io.StringReader  ;
26  
27  public class ParamSaxBufferFactory {
28  
29      /**
30       * Helper factory for create ParamSaxBuffers from XML blurbs. The resulting
31       * buffer will not contain start and endDocument events. The xmlBlurb parameter
32       * does not need to have a root element, it can simply be a string with some
33       * parameters in it.
34       */
35      public static ParamSaxBuffer create(String   xmlBlurb) {
36          String   xml = "<dummyRoot>" + xmlBlurb + "</dummyRoot>";
37  
38          ParamSaxBuffer buffer = new ParamSaxBuffer();
39          IncludeXMLConsumer includeConsumer = new IncludeXMLConsumer(buffer);
40          includeConsumer.setIgnoreRootElement(true);
41  
42          try {
43              SAXParserFactory   parserFactory = SAXParserFactory.newInstance();
44              parserFactory.setNamespaceAware(true);
45              SAXParser   parser = parserFactory.newSAXParser();
46              XMLReader   reader = parser.getXMLReader();
47              reader.setContentHandler(includeConsumer);
48              InputSource   is = new InputSource  (new StringReader  (xml));
49              reader.parse(is);
50          } catch (Exception   e) {
51              throw new RuntimeException  (e);
52          }
53  
54          return buffer;
55      }
56  }
57
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