Examples of com.volantis.mcs.context.MarinerPageContext

com.volantis.mcs.context.MarinerPageContext
Provides methods and instance variables that are applicable to the page associated with the current request. Every requested page will generate a new MarinerPageContext object.

The top level (first) canvas with the request will initialise the top level stacks and global objects such as the styling engine within the MarinerPageContext.

An included canvas will push its status onto the various stacks held within the MarinerPageContext and remove those from the stack on completion of that canvases rendering.

If this page is being rendered inside a region then the DeviceLayoutContext is added to the RegionInstance of the including region instead of being released here.
An outOfContextInclusion is a page which was created in either a servlet, or a JSP page but which was not initialised by a canvas and so limits the information which can be inherited

Refactoring

This class has grown quite substantially since it was first created and has reached the point where it is becoming quite unmanageable. It has 2 distinct but related uses. As the internal request context, and the canvas context. It would be better if this was split into a couple of different related classes each of which is geared towards the different use made of it. This would have significant savings in terms of wasted space.
Obviously refactoring can introduce bugs so it must be done with great care and even greater understanding of the uses made of it as it will have a wide impact on the code. @mock.generate

    
    // Javadoc inherited
    public XDIMEResult doElementStart(XDIMEContextInternal context,
            XDIMEAttributes attributes) throws XDIMEException {


        MarinerPageContext pageContext = getPageContext(context);
        
        // creating anonymous region instance
        // and pushing it into buffer
        anonymousRegionInstance = createAnonymousRegion(pageContext);    
        pageContext.pushContainerInstance(anonymousRegionInstance);
        OutputBuffer outputBuffer =
          anonymousRegionInstance.getCurrentBuffer();
        pageContext.pushOutputBuffer(outputBuffer);
        
        return super.doElementStart(context, attributes);
    }

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    // Javadoc inherited
    public XDIMEResult doElementEnd(XDIMEContextInternal context)
            throws XDIMEException {


        MarinerPageContext pageContext = getPageContext(context);


        // do this first so that current pane is not surpressed.
        XDIMEResult result = super.doElementEnd(context);
        
        // Pop the anonymous region buffer that was pushed on at the
        // end of the doElementStart() method.
        pageContext.popContainerInstance(anonymousRegionInstance);      


        OutputBuffer anonymousBuffer =
                anonymousRegionInstance.getCurrentBuffer();
        pageContext.popOutputBuffer(anonymousBuffer);
        
        DeviceLayoutContext layoutToPop = pageContext.getDeviceLayoutContext();        
        
        pageContext.popDeviceLayoutContext();                


        ContainerInstance containingInstance =
            pageContext.getCurrentContainerInstance();


        // buffer from annonymous region must be merged
        // with current buffer from instance
        containingInstance.getCurrentBuffer().transferContentsFrom(
            this.anonymousRegionInstance.getCurrentBuffer());

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     *                       pipeline configuration
     * @return a default XMLReader
     */
    public static XMLReader getXMLReader(MarinerRequestContext requestContext) {


        MarinerPageContext pageContext =
            ContextInternals.getMarinerPageContext(requestContext);


        // retrive the PipelineInitialization instance that the volantis
        // bean manages.
        PipelineInitialization pipelineInitialization =
            pageContext.getVolantisBean().getPipelineInitialization();


        // get hold of the Adapter process factory
        XMLPipelineFactory factory =
            pipelineInitialization.getPipelineFactory();

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                             ErrorHandler errorHandler,
                             InputSource inputSource)
        throws SAXException, IOException {
        XMLReader reader = getXMLReader(requestContext, errorHandler);
        
         MarinerPageContext pageContext =
            ContextInternals.getMarinerPageContext(requestContext);
             
         XMLPipelineContext pipelineContext = getPipelineContext(requestContext);
         // set the Base URI in the pipeline's context
         try {
             URL baseURI = pageContext.getAbsoluteURL(
                pageContext.getRequestURL(false));
             if (logger.isDebugEnabled()) {
                 logger.debug("Setting Base URI " + baseURI);
             }
             pipelineContext.pushBaseURI(baseURI.toExternalForm());
         } catch (MalformedURLException e) {

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            attributes, XDIMESchemata.XHTML2_NAMESPACE, ATTR_NAME_CONTENT);
        if (content != null && content.length() > 0) {
            bodyContentBuffer.writeText(content);
            outputBufferPushed = false;
        } else {
            final MarinerPageContext pageContext =
                ContextInternals.getMarinerPageContext(
                    context.getInitialRequestContext());
            // add the output buffer to the page context's output buffer stack
            pageContext.pushOutputBuffer(bodyContentBuffer);
            outputBufferPushed = true;
        }
    }

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    public void endProcess(final XDIMEContextInternal context,
                           final MetaInformationElement metaElement)
            throws XDIMEException {


        if (outputBufferPushed) {
            final MarinerPageContext pageContext =
                ContextInternals.getMarinerPageContext(
                    context.getInitialRequestContext());
            pageContext.popOutputBuffer(bodyContentBuffer);
        }
    }

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    // Javadoc inherited from super class.
  public Writer getContentWriter (MarinerRequestContext context,
                                  PAPIAttributes papiAttributes)
    throws PAPIException {


    MarinerPageContext pageContext
        = ContextInternals.getMarinerPageContext (context);
    VolantisProtocol protocol = pageContext.getProtocol ();            
    Writer writer = protocol.getNativeWriter();


    return writer;
  }

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                    "context multiple times");
        }


        this.requestContext = requestContext;


        MarinerPageContext pageContext =
                ContextInternals.getMarinerPageContext(requestContext);


        // Create the base URL tracker and store it in the page context.
        BaseURLTracker baseURLTracker =
                new BaseURLTracker(pageContext.getRequestURL(false));
        pageContext.setBaseURLProvider(baseURLTracker);


        // Create the project tracker.
        ProjectManager projectManager = pageContext.getProjectManager();
        ProjectStack projectStack = pageContext.getProjectStack();
        projectTracker = new ProjectTracker(baseURLTracker, projectManager,
                projectStack);


        defaultHandler.setInitialRequestContext(requestContext);
    }

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  // Javadoc inherited from super class.
  public int elementStart (MarinerRequestContext context,
                           PAPIAttributes papiAttributes)
    throws PAPIException {


    MarinerPageContext pageContext
      = ContextInternals.getMarinerPageContext (context);


    PickleBlockAttributes attributes = (PickleBlockAttributes) papiAttributes;
    
    // Try and find the pane with the specified name, if it could not be
    // found then return and skip the element body.
    String paneName = attributes.getPane ();
    if (paneName != null) {
      FormatReference formatRef = FormatReferenceParser.parsePane(paneName, pageContext);
      Pane pane = pageContext.getPane(formatRef.getStem());
      NDimensionalIndex paneIndex = formatRef.getIndex();
      
      if (pane == null) {
          skipped = true;
          return SKIP_ELEMENT_BODY;
      }


        paneInstance = (AbstractPaneInstance)
                pageContext.getFormatInstance(pane, paneIndex);
        if (paneInstance.ignore()) {
            skipped = true;
            return SKIP_ELEMENT_BODY;
        }


      pageContext.pushContainerInstance (paneInstance);
    }


    // The super class will handle initialising the protocol attributes and
    // calling the protocol.
    return super.elementStart (context, papiAttributes);

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    PickleBlockAttributes attributes = (PickleBlockAttributes) papiAttributes;
    
    // The super class will call the protocol.
    super.elementEnd (context, papiAttributes);


    MarinerPageContext pageContext
      = ContextInternals.getMarinerPageContext (context);


    if (paneInstance != null) {
      pageContext.popContainerInstance (paneInstance);
    }


    return CONTINUE_PROCESSING;
  }

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Examples of com.volantis.mcs.context.MarinerPageContext

Refactoring

Related Classes of com.volantis.mcs.context.MarinerPageContext