Examples of javax.servlet.Servlet

javax.servlet.Servlet
Basic servlet interface @author Rick Knowles

        tracker.startTimer(timerName);


        final ResourceResolver scriptResolver = this.getScriptResourceResolver();
        try {
            // find the error handler component
            Servlet servlet = null;
            Resource resource = getErrorResource(request);


            Class<?> tClass = throwable.getClass();
            while (servlet == null && tClass != Object.class) {
                // find a servlet for the simple class name as the method name

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     */
    private Servlet resolveServletInternal(final SlingHttpServletRequest request,
            final Resource resource,
            final String scriptName,
            final ResourceResolver resolver) {
        Servlet servlet = null;


        // first check whether the type of a resource is the absolute
        // path of a servlet (or script)
        if (scriptName.charAt(0) == '/') {
            final String scriptPath = ResourceUtil.normalize(scriptName);

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     *         such servlet willing to handle the request could be found.
     */
    private Servlet getServletInternal(final AbstractResourceCollector locationUtil,
            final SlingHttpServletRequest request,
            final ResourceResolver resolver) {
        final Servlet scriptServlet = (this.cache != null ? this.cache.get(locationUtil) : null);
        if (scriptServlet != null) {
            if ( LOGGER.isDebugEnabled() ) {
                LOGGER.debug("Using cached servlet {}", RequestUtil.getServletName(scriptServlet));
            }
            return scriptServlet;
        }


        final Collection<Resource> candidates = locationUtil.getServlets(resolver);


        if (LOGGER.isDebugEnabled()) {
            if (candidates.isEmpty()) {
                LOGGER.debug("No servlet candidates found");
            } else {
                LOGGER.debug("Ordered list of servlet candidates follows");
                for (Resource candidateResource : candidates) {
                    LOGGER.debug("Servlet candidate: {}", candidateResource.getPath());
                }
            }
        }


        boolean hasOptingServlet = false;
        for (final Resource candidateResource : candidates) {
            LOGGER.debug("Checking if candidate resource {} adapts to servlet and accepts request", candidateResource
                        .getPath());
            Servlet candidate = this.getServlet(candidateResource);
            if (candidate != null) {
                final boolean isOptingServlet = candidate instanceof OptingServlet;
                boolean servletAcceptsRequest = !isOptingServlet || (request != null && ((OptingServlet) candidate).accepts(request));
                if (servletAcceptsRequest) {
                    if (!hasOptingServlet && !isOptingServlet && this.cache != null) {

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     * be used if the default servlets have not been registered (yet).
     */
    private Servlet getDefaultServlet() {
        if (defaultServlet == null) {
            try {
                Servlet servlet = new DefaultServlet();
                servlet.init(new SlingServletConfig(servletContext, null, "Apache Sling Core Default Servlet"));
                defaultServlet = servlet;
            } catch (final ServletException se) {
                LOGGER.error("Failed to initialize default servlet", se);
            }
        }

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        // tree of the given resource
        final ResourceCollector locationUtil = new ResourceCollector(
            ServletResolverConstants.DEFAULT_ERROR_HANDLER_NAME,
            ServletResolverConstants.ERROR_HANDLER_PATH, resource,
            this.executionPaths);
        final Servlet servlet = getServletInternal(locationUtil, request, resolver);
        if (servlet != null) {
            return servlet;
        }


        // if no registered default error handler could be found use
        // the DefaultErrorHandlerServlet as an ad-hoc fallback
        if (fallbackErrorServlet == null) {
            // fall back to an adhoc instance of the DefaultErrorHandlerServlet
            // if the actual service is not registered (yet ?)
            try {
                final Servlet defaultServlet = new DefaultErrorHandlerServlet();
                defaultServlet.init(new SlingServletConfig(servletContext,
                    null, "Sling (Ad Hoc) Default Error Handler Servlet"));
                fallbackErrorServlet = defaultServlet;
            } catch (ServletException se) {
                LOGGER.error("Failed to initialize error servlet", se);
            }

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            propertyManager,
            copyMoveManager);


        // Register servlet, and set the contextPath field to signal successful
        // registration
        Servlet simpleServlet = new SlingSimpleWebDavServlet(resourceConfig,
            getRepository());
        httpService.registerServlet(resourceConfig.getServletContextPath(),
            simpleServlet, resourceConfig.getServletInitParams(), null);
        simpleWebDavServletRegistered = true;
    }

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            // this is expected if the servlet is not destined for Sling
            return false;
        }


        // only now try to access the servlet service, this may still fail
        Servlet servlet = null;
        try {
            servlet = (Servlet) context.locateService(REF_SERVLET, reference);
        } catch (Throwable t) {
            LOGGER.warn("bindServlet: Failed getting the service for reference " + reference, t);
        }
        if (servlet == null) {
            LOGGER.error("bindServlet: Servlet service not available from reference {}", reference);
            return false;
        }


        // assign the servlet to the provider
        provider.setServlet(servlet);


        // initialize now
        try {
            servlet.init(new SlingServletConfig(servletContext, reference, name));
            LOGGER.debug("bindServlet: Servlet {} added", name);
        } catch (ServletException ce) {
            LOGGER.error("bindServlet: Component " + name + " failed to initialize", ce);
            return false;
        } catch (Throwable t) {

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    @Test public void testAcceptsRequest() {
        MockSlingHttpServletRequest secureRequest = new MockSlingHttpServletRequest(
            SERVLET_PATH, null, SERVLET_EXTENSION, null, null);
        secureRequest.setResourceResolver(mockResourceResolver);
        secureRequest.setSecure(true);
        Servlet result = servletResolver.resolveServlet(secureRequest);
        assertEquals("Did not resolve to correct servlet", servlet, result);
    }

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    @Test public void testIgnoreRequest() {
        MockSlingHttpServletRequest insecureRequest = new MockSlingHttpServletRequest(
            SERVLET_PATH, null, SERVLET_EXTENSION, null, null);
        insecureRequest.setResourceResolver(mockResourceResolver);
        insecureRequest.setSecure(false);
        Servlet result = servletResolver.resolveServlet(insecureRequest);
        assertTrue("Did not ignore unwanted request",
            result.getClass() != MockSlingRequestHandlerServlet.class);
    }

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        req = context.mock(HttpServletRequest.class);
        resp = context.mock(HttpServletResponse.class);
        
        final ContentData contentData = context.mock(ContentData.class);
        final Servlet servlet = context.mock(Servlet.class);
        final ServletConfig servletConfig = context.mock(ServletConfig.class);
        
        context.checking(new Expectations() {{
            allowing(req).getServletPath();
            will(returnValue("/"));

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