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.


    @Test
    public void testSlingModelsOsgiService() {
        context.registerService(new MockMimeTypeService());


        ResourceResolver resolver = MockSling.newResourceResolver();
        OsgiServiceModel model = resolver.adaptTo(OsgiServiceModel.class);
        assertNotNull(model.getMimeTypeService());
        assertEquals("text/html", model.getMimeTypeService().getMimeType("html"));
    }

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    @Test
    public void testOsgiService() {
        bundleContext.registerService(MimeTypeService.class.getName(), new MockMimeTypeService(), null);


        ResourceResolver resolver = MockSling.newResourceResolver();
        OsgiServiceModel model = resolver.adaptTo(OsgiServiceModel.class);
        assertNotNull(model);
        assertNotNull(model.getMimeTypeService());
        assertEquals("text/html", model.getMimeTypeService().getMimeType("html"));
    }

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    private ResourceResolver resourceResolver;


    protected abstract ResourceResolverType getResourceResolverType();


    protected ResourceResolver newResourceResolver() {
        ResourceResolver resolver = MockSling.newResourceResolver(getResourceResolverType());


        if (getResourceResolverType() == ResourceResolverType.JCR_MOCK) {
            try {
                // dummy namespace registrations to make sure sling JCR resolver
                // does not get mixed up with the prefixes
                NamespaceRegistry namespaceRegistry = resolver.adaptTo(Session.class).getWorkspace()
                        .getNamespaceRegistry();
                namespaceRegistry.registerNamespace("sling", "http://mock/sling");
                namespaceRegistry.registerNamespace("app", "http://mock/app");
                namespaceRegistry.registerNamespace("dam", "http://mock/dam");
            } catch (RepositoryException ex) {

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    }
    
    @Test
    public void testMultipleResourceResolver() throws Exception {
        ResourceResolverFactory factory = newResourceResolerFactory();
        ResourceResolver resolver1 = factory.getResourceResolver(ImmutableMap.<String, Object>of(
                ResourceResolverFactory.USER, "user1"));
        ResourceResolver resolver2 = factory.getResourceResolver(ImmutableMap.<String, Object>of(
                ResourceResolverFactory.USER, "user2"));
        
        // validate user names
        // TODO: enable this tests when updated to latest jcr-mock/resourceresolver-mock versions
        /*
        assertEquals("user1", resolver1.getAttribute(ResourceResolverFactory.USER));
        assertEquals("user2", resolver2.getAttribute(ResourceResolverFactory.USER));
        */
        
        // add a resource in resolver 1
        Resource root = resolver1.getResource("/");
        resolver1.create(root, "test", ImmutableMap.<String, Object>of());
        resolver1.commit();
        
        // try to get resource in resolver 2
        Resource testResource2 = resolver2.getResource("/test");
        assertNotNull(testResource2);
        
        // delete resource and make sure it is removed in resolver 1 as well
        resolver2.delete(testResource2);
        resolver2.commit();
        
        assertNull(resolver1.getResource("/test"));
    }

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 * Abstract base class for injectors to consolidate common functionality.
 */
abstract class AbstractInjector {


    protected ResourceResolver getResourceResolver(Object adaptable) {
        ResourceResolver resolver = null;
        if (adaptable instanceof Resource) {
            resolver = ((Resource) adaptable).getResourceResolver();
        } else if (adaptable instanceof SlingHttpServletRequest) {
            resolver = ((SlingHttpServletRequest) adaptable).getResourceResolver();
        }

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    private final HttpServletRequest request;


    private final Map<String, Boolean> featureCache;


    public ExecutionContextImpl(final HttpServletRequest request) {
        ResourceResolver resourceResolver = null;
        if (request != null) {
            Object resolverObject = request.getAttribute(REQUEST_ATTRIBUTE_RESOLVER);
            if (resolverObject instanceof ResourceResolver) {
                resourceResolver = (ResourceResolver) resolverObject;
            }

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                }
            }
        }


        if (resourcePath != null) {
            ResourceResolver resolver = getResourceResolver(adaptable);
            if (resolver != null) {
                return resolver.getResource(resourcePath);
            }
        }


        return null;
    }

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    /**
     * Delete this view from the repository
     */
    public void remove(boolean logErrorOnFailure) {
        final ResourceResolver resourceResolver = getResource().getResourceResolver();
        try{
            resourceResolver.delete(getResource());
            resourceResolver.commit();
        } catch(PersistenceException pe) {
            if (logErrorOnFailure) {
                logger.error("remove: Could not remove node: " + pe, pe);
            } else {
                logger.info("remove: Could not remove node: "+pe);
            }
            resourceResolver.refresh();
        }
    }

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            }
            if (requestedClass.equals(SlingScriptHelper.class)) {
                return getSlingScriptHelper(request);
            }
        } else if (adaptable instanceof ResourceResolver) {
            ResourceResolver resourceResolver = (ResourceResolver) adaptable;
            if (requestedClass.equals(ResourceResolver.class)) {
                return resourceResolver;
            }
        } else if (adaptable instanceof Resource) {
            Resource resource = (Resource) adaptable;

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        // try to connect
        try {
            handleImpersonation(request, authInfo);
            handlePasswordChange(request, authInfo);
            ResourceResolver resolver = resourceResolverFactory.getResourceResolver(authInfo);
            final boolean impersChanged = setSudoCookie(request, response, authInfo);


            if (sendLoginEvent != null) {
                postLoginEvent(authInfo);
            }


            // provide the resource resolver to the feedback handler
            request.setAttribute(REQUEST_ATTRIBUTE_RESOLVER, resolver);


            boolean processRequest = true;


            // custom feedback handler with option to redirect
            if (feedbackHandler != null) {
                processRequest = !feedbackHandler.authenticationSucceeded(request, response, authInfo);
            }


            if (processRequest) {
                if (AuthUtil.isValidateRequest(request)) {
                    AuthUtil.sendValid(response);
                    processRequest = false;
                } else if (impersChanged || feedbackHandler == null) {
                    processRequest = !DefaultAuthenticationFeedbackHandler.handleRedirect(request, response);
                }
            }


            if (processRequest) {
                // process: set required attributes
                setAttributes(resolver, authInfo.getAuthType(), request);
            } else {
                // terminate: cleanup
                resolver.close();
            }


            return processRequest;


        } catch (LoginException re) {

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