Examples of org.apache.tapestry.IEngine

org.apache.tapestry.IEngine
Defines the core, session-persistant object used to run a Tapestry application for a single client (each client will have its own instance of the engine).
The engine exists to provide core services to the pages and components that make up the application. The engine is a delegate to the {@link ApplicationServlet} via the {@link #service(RequestContext)} method.
Engine instances are persisted in the {@link javax.servlet.http.HttpSession} and are serializable. @author Howard Lewis Ship @version $Id: IEngine.java 244167 2005-03-17 08:14:54Z pferraro $


    private IScript getParsedScript()
    {
        if (_parsedScript == null)
        {
            IEngine engine = getPage().getEngine();
            IScriptSource source = engine.getScriptSource();


            IResourceLocation scriptLocation =
                getSpecification().getSpecificationLocation().getRelativeLocation(
                    "Rollover.script");

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    protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
    {
        if (cycle.isRewinding())
            return;


        IEngine engine = cycle.getEngine();
        IEngineService pageService = engine.getService(Tapestry.PAGE_SERVICE);
        ILink link = pageService.getLink(cycle, this, new String[] { getTargetPage() });


        writer.beginEmpty("frame");
        writer.attribute("src", link.getURL());

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    public String buildURL(IRequestCycle cycle)
    {
        if (_resolvedURL == null)
        {
            IEngine engine = cycle.getEngine();
            String contextPath = engine.getContextPath();


            _resolvedURL = contextPath + getResourceLocation().getPath();
        }
        
        return _resolvedURL;

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        String scriptPath,
        IRequestCycle cycle,
        IFormComponent field,
        Map symbols)
    {
        IEngine engine = field.getPage().getEngine();
        IScriptSource source = engine.getScriptSource();
        IForm form = field.getForm();


        Map finalSymbols = (symbols == null) ? new HashMap() : symbols;


        finalSymbols.put(FIELD_SYMBOL, field);
        finalSymbols.put(FORM_SYMBOL, form);
        finalSymbols.put(VALIDATOR_SYMBOL, this);


        IResourceLocation location =
            new ClasspathResourceLocation(engine.getResourceResolver(), scriptPath);


        IScript script = source.getScript(location);


        Body body = Body.get(cycle);

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        }
    }


    private BSFManager obtainBSFManager(IRequestCycle cycle)
    {
        IEngine engine = cycle.getEngine();
        Pool pool = engine.getPool();


        BSFManager result = (BSFManager) pool.retrieve(BSF_POOL_KEY);


        if (result == null)
        {
            LOG.debug("Creating new BSFManager instance.");


            result = new BSFManager();


            result.setClassLoader(engine.getResourceResolver().getClassLoader());
        }


        return result;
    }

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    private ISpecificationResolverDelegate _delegate;


    public AbstractSpecificationResolver(IRequestCycle cycle)
    {
        IEngine engine = cycle.getEngine();


        _specificationSource = engine.getSpecificationSource();


        _applicationRootLocation = Tapestry.getApplicationRootLocation(cycle);


        String servletName =
            cycle.getRequestContext().getServlet().getServletConfig().getServletName();


        _webInfLocation = _applicationRootLocation.getRelativeLocation("/WEB-INF/");


        _webInfAppLocation = _webInfLocation.getRelativeLocation(servletName + "/");


        IApplicationSpecification specification = engine.getSpecification();


        if (specification.checkExtension(Tapestry.SPECIFICATION_RESOLVER_DELEGATE_EXTENSION_NAME))
            _delegate =
                (ISpecificationResolverDelegate) engine.getSpecification().getExtension(
                    Tapestry.SPECIFICATION_RESOLVER_DELEGATE_EXTENSION_NAME,
                    ISpecificationResolverDelegate.class);
        else
            _delegate = NullSpecificationResolverDelegate.getSharedInstance();
    }

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     *
     **/


    public PageLoader(IRequestCycle cycle)
    {
        IEngine engine = cycle.getEngine();


        _specificationSource = engine.getSpecificationSource();
        _resolver = engine.getResourceResolver();
        _enhancer = engine.getComponentClassEnhancer();
        _componentResolver = new ComponentSpecificationResolver(cycle);


        RequestContext context = cycle.getRequestContext();


        // Need the location of the servlet within the context as the basis

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        String scriptPath = getScriptPath();


        if (scriptPath == null)
            throw Tapestry.createRequiredParameterException(this, "scriptPath");


        IEngine engine = cycle.getEngine();
        IScriptSource source = engine.getScriptSource();


        // If the script path is relative, it should be relative to the Script component's
        // container (i.e., relative to a page in the application).


        IResourceLocation rootLocation =

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        MockControl cyclec = newControl(IRequestCycle.class);
        IRequestCycle cycle = (IRequestCycle) cyclec.getMock();


        MockControl enginec = newControl(IEngine.class);
        IEngine engine = (IEngine) enginec.getMock();


        MockControl delegatec = newControl(IValidationDelegate.class);
        IValidationDelegate delegate = (IValidationDelegate) delegatec.getMock();


        MockForm form = new MockForm(delegate);


        cycle.isRewound(form);
        cyclec.setReturnValue(false);


        cycle.getEngine();
        cyclec.setReturnValue(engine);


        engine.getClassResolver();
        enginec.setReturnValue(getClassResolver());


        MockControl supportc = newControl(PageRenderSupport.class);
        PageRenderSupport support = (PageRenderSupport) supportc.getMock();

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        IRequestCycle cycle = (IRequestCycle) cyclec.getMock();


        IValidationDelegate delegate = newDelegate();


        MockControl enginec = newControl(IEngine.class);
        IEngine engine = (IEngine) enginec.getMock();


        MockForm form = new MockForm(delegate);


        cycle.isRewound(form);
        cyclec.setReturnValue(true);


        cycle.getEngine();
        cyclec.setReturnValue(engine);


        engine.getClassResolver();
        enginec.setReturnValue(getClassResolver());


        trainGetPageRenderSupport(cyclec, cycle, null);


        replayControls();

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