Examples of org.apache.sling.api.resource.ResourceResolver

org.apache.sling.api.resource.ResourceResolver

The ResourceResolver defines the service API which may be used to resolve {@link Resource} objects. The resource resolver is available tothe request processing servlet through the {@link org.apache.sling.api.SlingHttpServletRequest#getResourceResolver()}method. A resource resolver can also be created through the {@link ResourceResolverFactory}.

The ResourceResolver is also an {@link Adaptable} to getadapters to other types. A JCR based resource resolver might support adapting to the JCR Session used by the resolver to access the JCR Repository.

A ResourceResolver is generally not thread safe! As a consequence, an application which uses the resolver, its returned resources and/or objects resulting from adapting either the resolver or a resource, must provide proper synchronization to ensure no more than one thread concurrently operates against a single resolver, resource or resulting objects.

Accessing Resources

This interface defines two kinds of methods to access resources: The resolve methods and the getResource methods. The difference lies in the algorithm applied to find the requested resource and in the behavior in case a resource cannot be found:

Method Kind	Access Algorithm	Missing Resource
resolve	Path is always assumed to be absolute. Uses elaborate resource resolution algorithm. This kind of method is intended to resolve request URLs to resources.	Returns {@link NonExistingResource}
getResource	Directly access resources with absolute path. For relative paths, the {@link #getSearchPath() search path} is applied. This method is intended tobe used by request processing scripts to access further resources as required.	Returns `null`

Lifecycle

A Resource Resolver has a life cycle which begins with the creation of the Resource Resolver using any of the factory methods and ends with calling the {@link #close()} method. It is very important to call the {@link #close()}method once the resource resolver is not used any more to ensure any system resources are properly cleaned up.

To check whether a Resource Resolver can still be used, the {@link #isLive()}method can be called.

Resource Resolver Attributes

The authentication info properties provided to the {@link ResourceResolverFactory#getResourceResolver(Map)}, {@link ResourceResolverFactory#getAdministrativeResourceResolver(Map)}, or {@link #clone(Map)} are available through the {@link #getAttributeNames()}and {@link #getAttribute(String)} methods with the exception of securitysensitive properties like {@link ResourceResolverFactory#PASSWORD} which isnot exposed.

     */
    public long lastModified(final String path) {
        if ( path.startsWith(":") ) {
            return this.classLoaderWriter.getLastModified(path.substring(1));
        }
        ResourceResolver resolver = requestResourceResolver.get();
        if (resolver != null) {
            try {
                final Resource resource = resolver.getResource(cleanPath(path, true));
                if (resource != null) {
                    ResourceMetadata meta = resource.getResourceMetadata();
                    long modTime = meta.getModificationTime();
                    return (modTime > 0) ? modTime : 0;
                }

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    // ---------- Helper Methods for JspServletContext -------------------------




    URL getURL(final String path) throws MalformedURLException {
        ResourceResolver resolver = requestResourceResolver.get();
        if (resolver != null) {
            try {
                final Resource resource = resolver.getResource(cleanPath(path, true));
                return (resource != null) ? resource.adaptTo(URL.class) : null;
            } catch (final SlingException se) {
                throw (MalformedURLException) new MalformedURLException(
                    "Cannot get URL for " + path).initCause(se);
            }

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    }


    Set<String> getResourcePaths(final String path) {
        final Set<String> paths = new HashSet<String>();


        ResourceResolver resolver = requestResourceResolver.get();
        if (resolver != null) {
            try {
                final String cleanedPath = cleanPath(path, false);
                final boolean startsWithWebInfTags = cleanedPath.startsWith(WEB_INF_TAGS);


                Resource resource = resolver.getResource(startsWithWebInfTags ? cleanedPath.substring(WEB_INF_TAGS.length()) : cleanedPath);
                if (resource != null) {
                    Iterator<Resource> entries = resolver.listChildren(resource);
                    while (entries.hasNext()) {
                        final String entryPath = entries.next().getPath();
                        if (startsWithWebInfTags) {
                            paths.add(WEB_INF_TAGS + entryPath);
                        } else {

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        }


        final int query = localTarget.indexOf('?');
        final String path = (query > 0) ? localTarget.substring(0, query) : localTarget;


        ResourceResolver resolver = getResourceResolver(request);
        if (resolver != null) {
            // assume all is fine if the path resolves to a resource
            if (!ResourceUtil.isNonExistingResource(resolver.resolve(request, path))) {
                return true;
            }


            // not resolving to a resource, check for illegal characters
        }

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    private static final String[] USERS = new String[] {"slingshot1", "slingshot2"};


    @Activate
    protected void activate() throws LoginException, PersistenceException, RepositoryException {
        logger.info("Setting up SlingShot...");
        ResourceResolver resolver = null;
        try {
            resolver = this.factory.getAdministrativeResourceResolver(null);
            setupUsers(resolver);
            setupContent(resolver);
            setupACL(resolver);
        } finally {
            if ( resolver != null ) {
                resolver.close();
            }
        }
        logger.info("Finished setting up SlingShot");
    }

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        final String userId = request.getRemoteUser();


        logger.debug("New rating from {} : {}", userId, rating);


        // save rating
        ResourceResolver resolver = null;
        try {
            resolver = factory.getAdministrativeResourceResolver(null);


            final Resource reqResource = resolver.getResource(request.getResource().getPath());


            SlingshotUtil.setOwnRating(reqResource.getParent(), userId, Integer.valueOf(rating));
        } catch ( final LoginException le ) {
            throw new ServletException("Unable to login", le);
        } finally {
            if ( resolver != null ) {
                resolver.close();
            }
        }


        response.setContentType("application/json");
        response.setCharacterEncoding("utf-8");

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    protected SessionProvider getSessionProvider() {
        return new SessionProvider() {


            public Session getSession(final HttpServletRequest req, final Repository repository, final String workspace)
                    throws LoginException, RepositoryException, ServletException {
                final ResourceResolver resolver = (ResourceResolver) req.getAttribute(AuthenticationSupport.REQUEST_ATTRIBUTE_RESOLVER);
                if (resolver != null) {
                    final Session session = resolver.adaptTo(Session.class);
                    if (session != null) {
                        final Session newSession = getLongLivedSession(session);
                        log.debug("getSession: Creating new Session ({}) for {}", newSession, newSession.getUserID());
                        return newSession;
                    }

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                    + "<br/>This utility does not take this into account and uses the first dot to split"
                    + " between path and selectors/extension."
                    + "<br/>As a workaround, you can replace dots with underline characters, for example, when testing such an URL."
                    + "</em>";


            ResourceResolver resourceResolver = null;
            try {
                resourceResolver = resourceResolverFactory.getAdministrativeResourceResolver(null);


                final PrintWriter pw = response.getWriter();


                pw.print("<form method='get'>");
                pw.println("<table class='content' cellpadding='0' cellspacing='0' width='100%'>");


                titleHtml(
                        pw,
                        "Servlet Resolver Test",
                        "To check which servlet is responsible for rendering a response, enter a request path into " +
                                 "the field and click 'Resolve' to resolve it.");


                tr(pw);
                tdLabel(pw, "URL");
                tdContent(pw);


                pw.print("<input type='text' name='");
                pw.print(PARAMETER_URL);
                pw.print("' value='");
                if ( url != null ) {
                    pw.print(ResponseUtil.escapeXml(url));
                }
                pw.println("' class='input' size='50'>");
                closeTd(pw);
                closeTr(pw);
                closeTr(pw);


                tr(pw);
                tdLabel(pw, "Method");
                tdContent(pw);
                pw.print("<select name='");
                pw.print(PARAMETER_METHOD);
                pw.println("'>");
                pw.println("<option value='GET'>GET</option>");
                pw.println("<option value='POST'>POST</option>");
                pw.println("</select>");
                pw.println("&nbsp;&nbsp;<input type='submit' value='Resolve' class='submit'>");


                closeTd(pw);
                closeTr(pw);


                if (StringUtils.isNotBlank(url)) {
                    tr(pw);
                    tdLabel(pw, "Decomposed URL");
                    tdContent(pw);
                    pw.println("<dl>");
                    pw.println("<dt>Path</dt>");
                    pw.print("<dd>");
                    pw.print(ResponseUtil.escapeXml(requestPathInfo.getResourcePath()));
                    pw.print("<br/>");
                    pw.print(CONSOLE_PATH_WARNING);
                    pw.println("</dd>");
                    pw.println("<dt>Selectors</dt>");
                    pw.print("<dd>");
                    if (requestPathInfo.getSelectors().length == 0) {
                        pw.print("&lt;none&gt;");
                    } else {
                        pw.print("[");
                        pw.print(ResponseUtil.escapeXml(StringUtils.join(requestPathInfo.getSelectors(), ", ")));
                        pw.print("]");
                    }
                    pw.println("</dd>");
                    pw.println("<dt>Extension</dt>");
                    pw.print("<dd>");
                    pw.print(ResponseUtil.escapeXml(requestPathInfo.getExtension()));
                    pw.println("</dd>");
                    pw.println("</dl>");
                    pw.println("</dd>");
                    pw.println("<dt>Suffix</dt>");
                    pw.print("<dd>");
                    pw.print(ResponseUtil.escapeXml(requestPathInfo.getSuffix()));
                    pw.println("</dd>");
                    pw.println("</dl>");
                    closeTd(pw);
                    closeTr(pw);
                }


                if (StringUtils.isNotBlank(requestPathInfo.getResourcePath())) {
                    final Collection<Resource> servlets;
                    Resource resource = resourceResolver.resolve(requestPathInfo.getResourcePath());
                    if (resource.adaptTo(Servlet.class) != null) {
                        servlets = Collections.singleton(resource);
                    } else {
                        final ResourceCollector locationUtil = ResourceCollector.create(
                                resource,
                                requestPathInfo.getExtension(),
                                executionPaths,
                                defaultExtensions,
                                method,
                                requestPathInfo.getSelectors());
                        servlets = locationUtil.getServlets(resourceResolver);
                    }
                    tr(pw);
                    tdLabel(pw, "&nbsp;");
                    tdContent(pw);


                    if (servlets == null || servlets.isEmpty()) {
                        pw.println("Could not find a suitable servlet for this request!");
                    } else {
                        pw.print("Candidate servlets and scripts in order of preference for method ");
                        pw.print(ResponseUtil.escapeXml(method));
                        pw.println(":<br/>");
                        pw.println("<ol class='servlets'>");
                        outputServlets(pw, servlets.iterator());
                        pw.println("</ol>");
                    }
                    pw.println("</td>");
                    closeTr(pw);
                }


                pw.println("</table>");
                pw.print("</form>");
            } catch (LoginException e) {
                throw new ServletException(e);
            } finally {
                if (resourceResolver != null) {
                    resourceResolver.close();
                }
            }
        }

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                return;
            }
        }
        
        assertNotNull("Expecting ResourceResolverFactory within " + timeout + " seconds");
        ResourceResolver rr = null;
        try {
            final ResourceResolverFactory f = (ResourceResolverFactory)bundleContext.getService(ref);
            rr = f.getAdministrativeResourceResolver(null);
            rr.getResource("/");
        } finally {
            if(rr != null) {
                rr.close();
            }
            bundleContext.ungetService(ref);
        }
    }

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    @Before
    public void setUp() throws Exception {
        RepositoryUtil.startRepository();
        this.adminSession = RepositoryUtil.getRepository().loginAdministrative(null);
        RepositoryUtil.registerSlingNodeTypes(adminSession);
        final ResourceResolver resolver = Mockito.mock(ResourceResolver.class);
        Mockito.when(resolver.adaptTo(Mockito.any(Class.class))).thenReturn(this.adminSession);
        Mockito.when(resolver.getResource(Mockito.anyString())).thenReturn(new JcrTestNodeResource(resolver, this.adminSession.getNode("/"), null));


        final ResourceResolverFactory factory = Mockito.mock(ResourceResolverFactory.class);
        Mockito.when(factory.getAdministrativeResourceResolver(Mockito.anyMap())).thenReturn(resolver);


        final EventAdmin mockEA = new EventAdmin() {

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