Examples of org.xml.sax.XMLFilter

org.xml.sax.XMLFilter
axproject.org'>http://www.saxproject.org for further information.
An XML filter is like an XML reader, except that it obtains its events from another XML reader rather than a primary source like an XML document or database. Filters can modify a stream of events as they pass on to the final application.

The XMLFilterImpl helper class provides a convenient base for creating SAX2 filters, by passing on all {@link org.xml.sax.EntityResolver EntityResolver}, {@link org.xml.sax.DTDHandler DTDHandler}, {@link org.xml.sax.ContentHandler ContentHandler} and {@link org.xml.sax.ErrorHandler ErrorHandler} events automatically.
@since SAX 2.0 @author David Megginson @version 2.0.1 (sax2r2) @see org.xml.sax.helpers.XMLFilterImpl

        try {
            // If the Source object is not changed, the
            // getTransformerHandler() of XSLTProcessor will simply return
            // the old template object. If the Source is unchanged, the
            // namespaces are not modified either.
            XMLFilter saveNSFilter = new SaveNamespaceFilter(namespaceURIs);
            return xsltProcessor.getTransformerHandler(source, saveNSFilter);
        } finally {
            // Release used resources
            source.recycle();
        }

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        }


        // Create a XMLReader
        XMLReader reader = XMLReaderFactory.createXMLReader();
        // Get the needed preprocess filter
        XMLFilter preprocessFilter = this.getPreprocessFilter(filename, programmingLanguage);
        preprocessFilter.setParent(reader);
        // Create code generator
        LogicsheetCodeGenerator codeGenerator = new LogicsheetCodeGenerator();
        codeGenerator.setLogger(getLogger());
        codeGenerator.initialize();
        // set the transformer chain builder filter

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    try {
      // If the Source object is not changed, the
      // getTransformerHandler() of XSLTProcessor will simply return
      // the old template object. If the Source is unchanged, the
      // namespaces are not modified either.
      XMLFilter saveNSFilter = new SaveNamespaceFilter(namespaces);
      return xsltProcessor.getTransformerHandler(source, saveNSFilter);
    } catch (Exception e) {
      getLogger().error("Logicsheet.getTransformerHandler: Exception ", e);
    }
    return null;

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    @Override
    protected Object unmarshalFromInputStream(Unmarshaller unmarshaller, InputStream is, MediaType mt) 
        throws JAXBException {
        try {
            XMLFilter filter = factory.newXMLFilter(
                createTemplates(getInTemplates(mt), inParamsMap, inProperties));
            SAXSource source = new SAXSource(filter, new InputSource(is));
            if (systemId != null) {
                source.setSystemId(systemId);
            }

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                Source reader = new StaxSource(StaxUtils.createXMLStreamReader(is));
                DOMResult dom = new DOMResult();
                t.newTransformer().transform(reader, dom);
                return unmarshaller.unmarshal(dom.getNode());
            }
            XMLFilter filter = null;
            try {
                filter = factory.newXMLFilter(t);
            } catch (TransformerConfigurationException ex) {
                TemplatesImpl ti = (TemplatesImpl)t;
                filter = factory.newXMLFilter(ti.getTemplates());
                trySettingProperties(filter, ti);
            }
            XMLReader reader = new StaxSource(StaxUtils.createXMLStreamReader(is));
            filter.setParent(reader);
            SAXSource source = new SAXSource();
            source.setXMLReader(filter);
            if (systemId != null) {
                source.setSystemId(systemId);
            }

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      // What can we do?
      // TODO: User diagnostics.
    }


    XMLFilter filter 
      = ((SAXTransformerFactory) tfactory).newXMLFilter(new StreamSource(xslID));


    filter.setParent(reader);


    // Now, when you call transformer.parse, it will set itself as 
    // the content handler for the parser object (it's "parent"), and 
    // will then call the parse method on the parser.
    filter.parse(new InputSource(sourceID));
  }

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    throw new org.xml.sax.SAXException( ex1.toString() );
      } catch( NoSuchMethodError ex2 ) {
      }
      if( reader==null ) reader = XMLReaderFactory.createXMLReader();


      XMLFilter filter1 = stf.newXMLFilter(new StreamSource(xslID_1));
      XMLFilter filter2 = stf.newXMLFilter(new StreamSource(xslID_2));
      XMLFilter filter3 = stf.newXMLFilter(new StreamSource(xslID_3));


      if (null != filter1) // If one success, assume all were success.
      {
        // transformer1 will use a SAX parser as it's reader.    
        filter1.setParent(reader);


        // transformer2 will use transformer1 as it's reader.
        filter2.setParent(filter1);


        // transform3 will use transform2 as it's reader.
        filter3.setParent(filter2);


        filter3.setContentHandler(new ExampleContentHandler());
        // filter3.setContentHandler(new org.xml.sax.helpers.DefaultHandler());


        // Now, when you call transformer3 to parse, it will set  
        // itself as the ContentHandler for transform2, and 
        // call transform2.parse, which will set itself as the 
        // content handler for transform1, and call transform1.parse, 
        // which will set itself as the content listener for the 
        // SAX parser, and call parser.parse(new InputSource("xml/foo.xml")).
        filter3.parse(new InputSource(sourceID));
      }
      else
      {
        System.out.println(
                           "Can't do exampleXMLFilter because "+

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        if (filterChain == null) {
            xmlReader = new SaxWriter();
        } else {
            if (filterChain instanceof XMLFilter) {
                // Connect the filter chain to a document reader.
                XMLFilter filter = (XMLFilter)filterChain;
                while (filter.getParent() instanceof XMLFilter) {
                    filter = (XMLFilter)filter.getParent();
                }
                if (!(filter.getParent() instanceof SaxWriter)) {
                    @SuppressWarnings("resource")
                    final SaxWriter saxWriter = new SaxWriter();
                    filter.setParent(saxWriter);
                }


                // Read XML data from filter chain.
                xmlReader = filterChain;
            } else {

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      // --TransformerFactory actually returns a SAXTransformerFactory instance
      // --We didn't care about that before, because we didn't use the
      // --SAXTransformerFactory extensions. But now we do, so we cast the result.
      SAXTransformerFactory stf =
        (SAXTransformerFactory) TransformerFactory.newInstance();
      XMLFilter filter1 = stf.newXMLFilter(new StreamSource(stylesheet1));
      XMLFilter filter2 = stf.newXMLFilter(new StreamSource(stylesheet2));


      // Wire the output of the reader to filter1
      // and the output of filter1 to filter2
      // --A filter is a kind of reader
      // --Setting the parent sets the input reader
      // --Since a filter is a reader, the "parent" could be another filter
      filter1.setParent(reader);
      filter2.setParent(filter1);


      // Set up the output stream
      StreamResult result = new StreamResult(System.out);
      
      // Set up the transformer to process the SAX events generated

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  protected void logSummary(boolean bHasErrors, Logger aLogger) {
  }


  protected boolean validateEntry(Logger aParentLogger, String aEntryName, String aLocalElementName, OdfVersion aVersion) throws IOException, ZipException, IllegalStateException, ODFValidatorException {
    Logger aLogger = new Logger(aEntryName, aParentLogger);
    XMLFilter aFilter = new ContentFilter(aLogger, aLocalElementName);
    if ((m_eMode == OdfValidatorMode.CONFORMANCE && aVersion.compareTo(OdfVersion.V1_1) <= 0)
        || m_eMode == OdfValidatorMode.EXTENDED_CONFORMANCE) {
      XMLFilter aAlienFilter = new ForeignContentFilter(aLogger, aVersion, m_aResult);
      aAlienFilter.setParent(aFilter);
      aFilter = aAlienFilter;
    }
    Validator aValidator = null;
    if (m_eMode == OdfValidatorMode.VALIDATE_STRICT) {
      aValidator = m_aValidatorProvider.getStrictValidator(aParentLogger.getOutputStream(), aVersion);

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