Examples of com.volantis.xml.pipeline.sax.XMLProcess

com.volantis.xml.pipeline.sax.XMLProcess
An XMLProcess is a component that accepts SAX events as an input, performing some operation or process on this input in order to generate SAX events as an output. XMLProcess are linked together to create an XML XMLPipeline.
Users should not implement this interface directly, rather they should use the {@link XMLProcessImpl} as it is likely that additional methodswill be added to this interface in future as required. e.g. it may be necessary in future to extends some of the other SAX events interfaces such as {@link org.xml.sax.EntityResolver} and possibly even some of the optionalones such as {@link org.xml.sax.ext.DeclHandler} and{@link org.xml.sax.ext.LexicalHandler}.

Warning

Processes must not rely on the qName attribute of the {@link ContentHandler#startElement} and {@link ContentHandler#endElement}being available. The pipeline requires namespace support and so the namespaceURI and localName attributes are always set but the qName may not be.

Unsupported Methods

The following methods from {@link ContentHandler} are not used within thepipeline. It is a fatal error if any of them methods are invoked.
- {@link #setDocumentLocator}
- {@link #startDocument}
- {@link #endDocument}
- {@link #skippedEntity}
In addition processes must not rely on receiving the following events as they may eventually join the above list of unsupported methods.
- {@link ContentHandler#startPrefixMapping}
- {@link ContentHandler#endPrefixMapping}
@see Contextual Information @volantis-api-include-in PublicAPI @volantis-api-include-in ProfessionalServicesAPI @volantis-api-include-in InternalAPI @mock.generate

    }


    // javadoc inherited
    public void testEndDocument() throws Exception {
        // create an instance of the class that is to be tested
        XMLProcess process = createTestableProcess();
        
        // create a locator
        LocatorImpl locator = new LocatorImpl();
        
        // create a "base" URI
        URL baseURI = null;
        try {
            baseURI = new URL("http://foo.com");
        } catch (MalformedURLException e) {
            fail("Could not construct a java.net.URL instance");
        }
        
        // update the locator with the location
        locator.setSystemId(baseURI.toExternalForm());
        
        // set the next process
        XMLProcessTestable next = new XMLProcessTestable();
        process.setNextProcess(next);
                
        // call setDocumentLocator()
        process.setDocumentLocator(locator);
        process.startDocument();
        
        // get hold of the pipeline context
        XMLPipelineContext context
                = process.getPipeline().getPipelineContext();
        
        // ensure that the XMLPipelineContext has a current locator and
        // base uri
        assertNotNull(
                "XMLPipelineContext should have a non null current locator",
                context.getCurrentLocator());


        assertNotNull(
                "XMLPipelineContext should have a non null current base URI",
                context.getCurrentBaseURI());
        
        // invoke the method that is being tested
        process.endDocument();
        
        // ensure that the pipeline context has had both the current locator
        // and base uri popped off.
        assertNull("endDocument should pop the current locator",
                   context.getCurrentLocator());

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    }


    //javadoc inherited
    public void testStartPrefixMapping() throws Exception {
        // create an instance of the class that is to be tested
        XMLProcess process = createTestableProcess();


        String prefix = "prefix";
        String namespace = "namespace";


        // set the next process
        XMLProcessTestable next = new XMLProcessTestable();
        process.setNextProcess(next);
        
        // invoke the method that is being tested
        process.startPrefixMapping(prefix, namespace);


        // get hold of the pipeline context
        XMLPipelineContext context
                = process.getPipeline().getPipelineContext();
        
        // ensure that the pipeline contexts NamespacePrefixTracker has
        // been updated        
        NamespacePrefixTracker tracker = context.getNamespacePrefixTracker();

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    }


    // javadoc inherited
    public void testEndPrefixMapping() throws Exception {
        // create an instance of the class that is to be tested
        XMLProcess process = createTestableProcess();


        String prefix = "prefix";
        String namespace = "namespace";


        // set the next process
        XMLProcessTestable next = new XMLProcessTestable();
        process.setNextProcess(next);


        // get hold of the pipeline context
        XMLPipelineContext context
                = process.getPipeline().getPipelineContext();
        
        // Update pipeline contexts NamespacePrefixTracker with a prefix
        // and namespace pair
        NamespacePrefixTracker tracker = context.getNamespacePrefixTracker();
        tracker.startPrefixMapping(prefix, namespace);


        assertEquals("NamespacePrefixTracker was not updated with the " +
                     "startPrefixMapping event",
                     namespace,
                     tracker.getNamespaceURI(prefix));       
                      
        // invoke the method that is being tested
        process.endPrefixMapping(prefix);
        
        // ensure that the NamespacePrefixTracker has been updated
        assertNull("NamespacePrefixTracker was not updated with the " +
                   "endPrefixMapping event",                    
                     tracker.getNamespaceURI(prefix));

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                XMLPipelineFactory factory = context.getPipelineFactory();
                final PipelineRecorder recorder =
                        factory.createPipelineRecorder();
                recorder.startRecording(dynamicProcess.getPipeline());


                final XMLProcess process = recorder.getRecordingProcess();


                dynamicProcess.addProcess(process);


                // Create an action to wrap the iterator and remove the
                // recording process once the body has been evaluated.

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        HTMLResponseConditioner conditioner = new HTMLResponseConditioner(xmlFilter);




        XMLProcessImpl xmlProcess = new XMLProcessImpl() {
            public void setDocumentLocator(Locator locator) {
                XMLProcess consumer = getConsumerProcess();
                if (null != consumer) {
                    consumer.setDocumentLocator(locator);
                }
            }


            public void startDocument() throws SAXException {
                XMLProcess consumer = getConsumerProcess();
                if (null != consumer) {
                    consumer.startDocument();
                }
            }


            public void endDocument() throws SAXException {
                XMLProcess consumer = getConsumerProcess();
                if (null != consumer) {
                    consumer.endDocument();
                }
            }


            // Javadoc inherited
            public void startPrefixMapping(String prefix, String uri)
                    throws SAXException {
                XMLProcess consumer = getConsumerProcess();
                if (null != consumer) {
                    consumer.startPrefixMapping(prefix, uri);
                }
            }


            // Javadoc inherited
            public void endPrefixMapping(String prefix) throws SAXException {
                XMLProcess consumer = getConsumerProcess();
                if (null != consumer) {
                    consumer.endPrefixMapping(prefix);
                }
            }
        };
        xmlProcess.setNextProcess(adapter);

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     *
     * @param pipeline The pipeline whose target process is requested.
     * @return Target process.
     */
    public static XMLProcess getTargetProcess(XMLPipeline pipeline) {
        XMLProcess target = pipeline.getHeadProcess();
        if (target == null) {
            target = pipeline.getPipelineProcess().getNextProcess();
        }
        if (target == null) {
            throw new IllegalStateException("Cannot find target process");

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        XMLPipelineFactory factory = context.getPipelineFactory();


        // create a new pipeline.
        XMLPipeline pipeline = factory.createDynamicPipeline(context);


        XMLProcess cup = factory.createContextUpdatingProcess();
        cup.setPipeline(target.getPipeline());
        XMLProcess pipelineProcess = pipeline.getPipelineProcess();
        cup.setNextProcess(pipelineProcess);


        // set up the XMLReader so that the inclusion can be read.
        XMLReader reader = createXMLReader();
        reader.setErrorHandler(cup);
        reader.setContentHandler(cup);


        // Chain the new pipeline process to the target process
        pipelineProcess.setNextProcess(target);


        URLContentManager manager = PipelineURLContentManager.retrieve(
                context);


        try {

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        // invoke startElement on the rule
        Object returned = rule.startElement(dynamicProcess, eName, atts);


        // ask the rule to create a process
        XMLProcess process = rule.createProcess(dynamicProcess,
                                                eName,
                                                createStartElementAttributes());


        // ensure the process was added to the pipeline is the same type as
        // the one that the rule creates
        assertSame("Process was not added to the pipeline",
                   process.getClass(),
                   pipeline.getHeadProcess().getClass());


    }

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        // create an expanded name
        ExpandedName eName = new ImmutableExpandedName("testNamespace",
                                                       "testLocalName");


        // ask the rule to create a process
        XMLProcess process = rule.createProcess(dynamicProcess,
                                                eName,
                                                createStartElementAttributes());


        // add a process to the head of the pipeline
        pipeline.addHeadProcess(process);

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        booleanValue = value;
    }


    //javadoc inherited
    public void stopProcess() throws SAXException {
        final XMLProcess nextProcess = getNextProcess();
        nextProcess.characters(text.toCharArray(), 0, text.length());
        final String intStr = " i: " + Integer.toString(intValue);
        nextProcess.characters(intStr.toCharArray(), 0, intStr.length());
        final String doubleStr = " d: " + Double.toString(doubleValue);
        nextProcess.characters(doubleStr.toCharArray(), 0, doubleStr.length());
        final String booleanStr = " b: " + Boolean.toString(booleanValue);
        nextProcess.characters(booleanStr.toCharArray(), 0, booleanStr.length());
        final ParametersConfiguration configuration = (ParametersConfiguration)
            getPipelineContext().getPipelineConfiguration().
                retrieveConfiguration(getClass());
        if (configuration != null) {
            Iterator iter = configuration.getParameterNames();
            if (iter.hasNext()) {
                nextProcess.characters(CONFIG_PARAMETERS_TITLE.toCharArray(), 0,
                    CONFIG_PARAMETERS_TITLE.length());
                while (iter.hasNext()) {
                    final String name = (String) iter.next();
                    final String value = configuration.getParameterValue(name);
                    final String line = name + " - " + value;
                    nextProcess.characters(
                        line.toCharArray(), 0, line.length());
                    if (iter.hasNext()) {
                        nextProcess.characters(
                            ", ".toCharArray(), 0, ", ".length());
                    }
                }
            }
        }

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Examples of com.volantis.xml.pipeline.sax.XMLProcess

Warning

Unsupported Methods

Related Classes of com.volantis.xml.pipeline.sax.XMLProcess