Examples of org.apache.cocoon.xml.dom.DOMStreamer

org.apache.cocoon.xml.dom.DOMStreamer
The DOMStreamer is a utility class that will generate SAX events from a W3C DOM Document.
The DOMStreamer uses a different strategy based on the value of the normalizeNamespaces property:
- if true (the default), the DOMStreamer will normalize namespace declarations (i.e. add missing xmlns attributes or correct them). See also {@link NamespaceNormalizingDOMStreamer}.
- if false, the standard JAXP identity transformer is used.
@author Carsten Ziegeler @author Pierpaolo Fumagalli(Apache Software Foundation) @version CVS $Id: DOMStreamer.java,v 1.10 2003/03/19 09:40:42 bruno Exp $


            DOMBuilder builder = new DOMBuilder();
            transformer.setConsumer(new WhitespaceFilter(builder));


            assertNotNull("Test if input document is not null", input);
            DOMStreamer streamer = new DOMStreamer(transformer);
            streamer.stream(input);


            document = builder.getDocument();
            assertNotNull("Test for transformer document", document);


        } catch (ComponentException ce) {

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            document = new ByteArrayOutputStream();
            serializer.setOutputStream(document);


            assertNotNull("Test if input document is not null", input);
            DOMStreamer streamer = new DOMStreamer(serializer);


            streamer.stream(input);
        } catch (ComponentException ce) {
            getLogger().error("Could not retrieve serializer", ce);
            fail("Could not retrieve serializer:"+ce.toString());
        } finally {
            if (serializer!=null) {

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    private void executeDOM(final XMLConsumer consumer,
                            MyJexlContext jexlContext,
                            JXPathContext jxpathContext,
                            Node node) throws SAXException {
        DOMStreamer streamer = new DOMStreamer(consumer);
        streamer.stream(node);
   }

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            DOMBuilder builder = new DOMBuilder();
            transformer.setConsumer(new WhitespaceFilter(builder));


            assertNotNull("Test if input document is not null", input);
            DOMStreamer streamer = new DOMStreamer(transformer);
            streamer.stream(input);


            document = builder.getDocument();
            assertNotNull("Test for transformer document", document);


        } catch (ComponentException ce) {

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    private void executeDOM(final XMLConsumer consumer,
                            MyJexlContext jexlContext,
                            JXPathContext jxpathContext,
                            Node node) throws SAXException {
        Parser parser = new Parser();
        DOMStreamer streamer = new DOMStreamer(parser);
        streamer.stream(node);
        execute(consumer,
                jexlContext,
                jxpathContext,
                parser.getStartEvent(), null);
    }

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            errorWriter.close();
            if(getLogger().isWarnEnabled()) {
               getLogger().warn(stringWriter.toString());
            }


            DOMStreamer domStreamer = new DOMStreamer(this.contentHandler,
                                                      this.lexicalHandler);
            this.contentHandler.startDocument();


            if(xpath != null) {
                NodeList nl = processor.selectNodeList(doc, xpath);
                int length = nl.getLength();
                for(int i=0; i < length; i++) {
                    domStreamer.stream(nl.item(i));
                }
            } else {
                // If the HTML document contained a <?xml ... declaration, tidy would have recognized
                // this as a processing instruction (with a 'null' target), giving problems further
                // on in the pipeline. Therefore we only serialize the document element.
                domStreamer.stream(doc.getDocumentElement());
            }
            this.contentHandler.endDocument();
        } catch (SAXException e){
            SourceUtil.handleSAXException(this.inputSource.getURI(), e);
        }

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                DOMBuilder builder = new DOMBuilder();
                parser.setContentHandler(builder);
                parser.parse(new InputSource(requestStream));
                Document doc = builder.getDocument();


                DOMStreamer domStreamer = new DOMStreamer(this.contentHandler,
                                                          this.lexicalHandler);
                this.contentHandler.startDocument();
                NodeList nl = processor.selectNodeList(doc, xpath);
                int length = nl.getLength();
                for(int i=0; i < length; i++) {
                    domStreamer.stream(nl.item(i));
                }
                this.contentHandler.endDocument();
            } else {
                parser.setContentHandler(this.contentHandler);
                parser.parse(new InputSource(requestStream));

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    /** dump a DOM document, using an IncludeXMLConsumer to filter out start/end document events */
    private void executeDOM(final XMLConsumer consumer, MyJexlContext jexlContext, JXPathContext jxpathContext, Node node)
            throws SAXException {
        IncludeXMLConsumer includer = new IncludeXMLConsumer(consumer);
        DOMStreamer streamer = new DOMStreamer(includer);
        streamer.stream(node);
   }

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            DocumentFragment fragment = this.endRecording();
            RepeaterStatus status = (RepeaterStatus) this.repeater.get(this.repeater.size() - 1);
            Object[] vals = this.getValues(this.getName(status.expr));
            int count = (vals != null ? vals.length : 0);
            for (status.count = 1; status.count <= count; status.count++) {
                DOMStreamer streamer = new DOMStreamer(this, this);
                streamer.stream(fragment);
            }
            this.repeater.remove(this.repeater.size() - 1);
        } else {
            this.relayEndElement(uri, name, raw);
            if (this.recordingCount < 0) {

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                       selector = (ComponentSelector)manager.lookup(Serializer.ROLE + "Selector");
                       serializer = (Serializer)selector.select(serializerName);
                       oStream = ws.getOutputStream();
                       serializer.setOutputStream(oStream);
                         serializer.startDocument();
                       DOMStreamer streamer = new DOMStreamer(serializer);
                       streamer.stream(frag);
                         serializer.endDocument();
                  } catch (ComponentException e) {
                    throw new ProcessingException("Unable to lookup serializer.", e);
          } finally {
                      if (oStream != null) {
                          oStream.flush();
                          try {
                              oStream.close();
                          } catch (Exception ignore) {
                            }
                        }
            if ( selector != null ) {
              selector.release( serializer );
              manager.release( selector );
            }
                  }
                } else {
                  final String content = XMLUtils.serializeNode(frag,
                                             XMLUtils.defaultSerializeToXMLFormat(false));
                  OutputStream oStream = ws.getOutputStream();
  
                  oStream.write(content.getBytes());
                  oStream.flush();
                  oStream.close();
                }
            } else {
              String content;
        if ( null != serializerName) {
          ComponentManager  manager = CocoonComponentManager.getSitemapComponentManager();
                    
                    ComponentSelector selector = null;
                    Serializer serializer = null;
                    ByteArrayOutputStream oStream = new ByteArrayOutputStream();
                    try {
                        selector = (ComponentSelector)manager.lookup(Serializer.ROLE + "Selector");
                        serializer = (Serializer)selector.select(serializerName);
                        serializer.setOutputStream(oStream);
                        serializer.startDocument();
                        DOMStreamer streamer = new DOMStreamer(serializer);
                        streamer.stream(frag);
                        serializer.endDocument();
          } catch (ComponentException e) {
            throw new ProcessingException("Unable to lookup serializer.", e);
                    } finally {
                        if (oStream != null) {

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