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

com.volantis.xml.pipeline.sax.XMLPipelineContext
Contains contextual information that is needed by processes within the pipeline.
Warning: This is a facade provided for use by user code, not for implementation by user code. User implementations of this interface are highly likely to be incompatible with future releases of the product at both binary and source levels.

Processes can be added to the pipeline after it has been running which means that they may have missed some of the events that carry contextual information that may be needed in order to interpret other events, e.g. setDocumentLocator, startPrefixMapping, etc. This class provides access to that information.

Each pipeline has its own instance of this object which is created when the pipeline is created and discarded when the pipeline is discarded. Nested pipelines use the same instance of this class as the containing pipeline.

In addition to the normal SAX contextual information this class also provides facilities for pipeline objects such as XMLProcesses to communicate with each other.

XML Base

The XML Base standard defines a mechanism to allow page authors to specify the base URI used when resolving relative URIs. This interface provides support for managing them using the following methods.
- {@link #pushBaseURI}
- {@link #popBaseURI}
- {@link #getCurrentBaseURI}
- {@link #pushLocator}
- {@link #popLocator}
- {@link #getCurrentLocator}
Namespace mappings
todo: document this
Environment Interaction Tracker

The {@link EnvironmentInteractionTracker} is used to keep track of theenvironment interactions that affect the pipeline.

Object Stack

The object stack can be used by objects (processes, dynamic element rules, etc) to communicate and cooperate with one another.

The {@link ResourceOwner#release} method will be invoked on stack objectsthat implement the interface when the object is popped off the stack.

While pushing an {@link XMLProcess} on the object stack is allowed it isnot recommended as it can cause problems. An {@link XMLProcess} is a{@link ResourceOwner} and so popping it off the stack could
Custom Properties

These are used to allow pipeline objects (processes, rules) to communicate and cooperate with both the user of the pipeline and other pipeline objects. See {@link PropertyContainer} for more details.
The {@link ResourceOwner#release} method will be invoked on propertyvalues that implement the interface if the property is changed or removed.

Flow Control

Conditional content and error recovery require the ability to skip over events within the pipeline until a certain point within the event stream is reached at which time the pipeline carries on processing as normal. The mechanism to support this is called flow control.

Error Recovery

As part of error recovery this object provides support for recovering back to a well known state. This can involve discarding property values and objects on the object stack. The {@link ResourceOwner#release} method willbe invoked for those property values and stack objects that implement that interface and are discarded during error recovery.
@volantis-api-include-in PublicAPI @volantis-api-include-in ProfessionalServicesAPI @volantis-api-include-in InternalAPI @mock.generate

            throws SAXException {


        TryProcess process = (TryProcess) object;
        TryModel model = process;


        XMLPipelineContext context = dynamicProcess.getPipelineContext();
        if (!context.inErrorRecoveryMode()) {
            model.endTry();


            context.popObject(model);
        }


        dynamicProcess.removeProcess(process);


        if (!context.inErrorRecoveryMode()) {
            SAXParseException exception = model.getException(context);
            if (exception != null) {
                getTargetProcess(dynamicProcess).error(exception);
            }
        }

View Full Code Here

                }
                // strip off the %{ } so that we are left with the xpath
                String expressionStr =
                        PipelineExpressionHelper.removePipelineQuoting(
                                value, exprPrefixes, exprSuffixes);
                XMLPipelineContext pipelineContext = getPipelineContext();
                try {
                    // parse the xpath


                    Expression expression = parser.parse(expressionStr);
                    // obtain the ExpressionContext from the PipelineContext
                    // the ExpressionContext is needed in order to evaluate the
                    // expression parsed
                    ExpressionContext expressionContext =
                            getPipelineContext().getExpressionContext();


                    // evaluate the experssion
                    Value result = expression.evaluate(expressionContext);
                    if (result.getSequence().getLength() == 0) {
                        // if the sequence is empty then we must remove the
                        // attriubute.
                        output.removeAttribute(i);
                    } else {
                        // update the current attribute with the string
                        // representation of the evaluated expression.
                        output.setValue(i, result.stringValue().asJavaString());
                    }
                }
                catch (Exception e) {
                    // something went wrong when evaluating the xpath.
                    // Send an error down the pipeline
                    Locator locator = pipelineContext.getCurrentLocator();
                    XMLPipelineException se = new XMLPipelineException(
                            "Could not evaluate the expression " +
                            expressionStr,
                            locator,
                            e);

View Full Code Here

    public TValue createSimpleValue(String value)
            throws SAXException {


        transition(TemplateSchema.VALUE_START);


        XMLPipelineContext context = getPipelineContext();
        XMLPipelineFactory factory = context.getPipelineFactory();
        PipelineRecorder recorder = factory.createPipelineRecorder();
        recorder.startRecording(getPipeline());
        char[] chars = value.toCharArray();
        recorder.getRecordingHandler().characters(chars, 0, chars.length);
        PipelineRecording recording = recorder.stopRecording();

View Full Code Here


        startElement(element);


        this.mode = mode;


        XMLPipelineContext context = getPipelineContext();
        XMLPipelineFactory factory = context.getPipelineFactory();
        recorder = factory.createPipelineRecorder();
        recorder.startRecording(getPipeline());
        contentHandler = recorder.getRecordingHandler();
    }

View Full Code Here


        WSDLOperation operation = new WSDLOperation(wsdlURI,
                                                    portType,
                                                    operationName);


        XMLPipelineContext context = getPipelineContext();


        context.setProperty(Operation.class, operation, false);
    }

View Full Code Here

            EnvironmentContext environmentContext =
                    ContextInternals.getEnvironmentContext( requestContext );


            // The getXMLReader() call above will set up the pipelineContext in
            // the environmentContext.  See MarlinSAXHelper.setPipelineContext()
            XMLPipelineContext pipelineContext =
                    environmentContext.getPipelineContext();
            // set the Base URI in the pipeline's context
            try {
                URL baseURI = new URL( baseUrl );
                if( logger.isDebugEnabled() ) {
                    logger.debug( "Setting Base URI "
                                        + baseURI.toExternalForm() );
                }
                pipelineContext.pushBaseURI( baseURI.toExternalForm() );
            } catch( MalformedURLException e ) {
                throw new MessageException( e );
            }
            reader.parse( new InputSource( new StringReader( messageXML ) ) );

View Full Code Here

        }
        inDocument = true;


        try {
            if (locator != null) {
                XMLPipelineContext pipelineContext = getPipelineContext();
                // store the locator away in the XMLPipelineContext. The Locator
                // is useful when reporting errors
                pipelineContext.pushLocator(locator);
                pipelineContext.pushBaseURI(locator.getSystemId());
            } else if (!allowNullLocator) {
                warning(new XMLPipelineException("The document does not " +
                                                 "have an associated Locator.", null));
            }
        } catch (MalformedURLException e) {

View Full Code Here

                             String localName,
                             String qName,
                             Attributes atts) throws SAXException {
        Attributes attributes = atts;
        // obtain the pipeline context
        XMLPipelineContext pipelineContext = getPipelineContext();
        try {
            // retrieve the base uri if any
            String baseURI = atts.getValue(NamespaceSupport.XMLNS,
                                           BASE_ATTRIBUTE);
            // push the base URI onto the context - OK to push null
            pipelineContext.pushBaseURI(baseURI);


            if (baseURI != null) {
                AttributesImpl cloneAttrs = new AttributesImpl(atts);
                int index = cloneAttrs.
                        getIndex(NamespaceSupport.XMLNS, BASE_ATTRIBUTE);
                cloneAttrs.removeAttribute(index);
                attributes = cloneAttrs;
            }
        } catch (MalformedURLException e) {
            fatalError(new XMLPipelineException(
                    "base uri attribute is malformed",
                    pipelineContext.getCurrentLocator(),
                    e));
        }
        // forward this event to the next process
        super.startElement(namespaceURI, localName, qName, attributes);
    }

View Full Code Here

        inDocument = false;


        // pop the locator and base URI that was pushed when the
        // setDocumentLocator event was received
        if (locator != null) {
            XMLPipelineContext pipelineContext = getPipelineContext();
            pipelineContext.popLocator();
            pipelineContext.popBaseURI();
            locator = null;
        }
    }

View Full Code Here

     * @return The template model.
     * @throws SAXException If the model could not be retrieved.
     */
    protected TemplateModel getModel(DynamicProcess dynamicProcess)
            throws SAXException {
        XMLPipelineContext context = dynamicProcess.getPipelineContext();
        TemplateModel model = (TemplateModel) context.findObject(
                TemplateModel.class);


        if (model == null) {
            throw forwardFatalError(dynamicProcess,
                    "Missing template:apply operation");

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

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

com.volantis.mcs.client.ClientSampleValidationTestCase$ClientSuccessfulTest

com.volantis.mcs.ibm.websphere.portalserver.MCSPortalFilter

com.volantis.mcs.marlin.sax.MarlinSAXHelper

com.volantis.mcs.papi.impl.IncludeElementImpl

com.volantis.mcs.protocols.DOMProtocol

com.volantis.mcs.runtime.pipeline.PipelineInitialization$MCSPipelineFactory

com.volantis.mcs.runtime.pipeline.PipelineIntegrationUtilities

com.volantis.mcs.runtime.pipeline.TranscoderURLConverterTestCase

com.volantis.mcs.servlet.DefaultXDIMERequestProcessorHelper

com.volantis.mcs.servlet.http.proxy.ProxySessionIdOperationProcess

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.

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

XML Base

Namespace mappings

Environment Interaction Tracker

Object Stack

Custom Properties

Flow Control

Error Recovery

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