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.

        final String type = resource.getResourceType();
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("resolveServlet called for resource {}", resource);
        }


        final ResourceResolver scriptResolver = this.getScriptResourceResolver();
        Servlet servlet = null;


        if ( type != null && type.length() > 0 ) {
            servlet = resolveServletInternal(request, null, type, scriptResolver);
        }

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        }
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("resolveServlet called for resource {} with script name {}", resource, scriptName);
        }


        final ResourceResolver scriptResolver = this.getScriptResourceResolver();
        final Servlet servlet = resolveServletInternal(null, resource, scriptName, scriptResolver);


        // log the servlet found
        if (LOGGER.isDebugEnabled()) {
            if (servlet != null) {

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        }
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("resolveServlet called for for script name {}", scriptName);
        }


        final ResourceResolver scriptResolver = this.getScriptResourceResolver();
        final Servlet servlet = resolveServletInternal(null, (Resource)null, scriptName, scriptResolver);


        // log the servlet found
        if (LOGGER.isDebugEnabled()) {
            if (servlet != null) {

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        // start tracker
        RequestProgressTracker tracker = request.getRequestProgressTracker();
        String timerName = "handleError:status=" + status;
        tracker.startTimer(timerName);


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


            // find a servlet for the status as the method name

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        // start tracker
        RequestProgressTracker tracker = request.getRequestProgressTracker();
        String timerName = "handleError:throwable=" + throwable.getClass().getName();
        tracker.startTimer(timerName);


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

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    }


    // ---------- internal helper ---------------------------------------------


    private ResourceResolver getScriptResourceResolver() {
        ResourceResolver scriptResolver = this.perThreadScriptResolver.get();
        if ( scriptResolver == null ) {
            // no per thread, let's use the shared one
            synchronized ( this.sharedScriptResolver ) {
                this.sharedScriptResolver.refresh();
            }

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                this.perThreadScriptResolver.set(this.sharedScriptResolver.clone(null));
            } catch (final LoginException e) {
                LOGGER.error("Unable to create new script resolver clone", e);
            }
        } else if ( event.getType() == SlingRequestEvent.EventType.EVENT_DESTROY ) {
            final ResourceResolver resolver = this.perThreadScriptResolver.get();
            if ( resolver != null ) {
                this.perThreadScriptResolver.remove();
                resolver.close();
            }
        }
    }

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    }


    @Override
    protected void getWeightedResources(final Set<Resource> resources,
                                        final Resource location) {
        final ResourceResolver resolver = location.getResourceResolver();
        // if extension is set, we first check for an exact script match
        if ( this.extension != null ) {
            final String path = ResourceUtil.normalize(location.getPath() + '/' + this.scriptName);
            if ( this.isPathAllowed(path) ) {
                final Resource current = resolver.getResource(path);
                if ( current != null ) {
                    this.addWeightedResource(resources, current, 0, WeightedResource.WEIGHT_EXTENSION);
                }
            }
        }
        // if the script name denotes a path we have to get the denoted resource
        // first
        final Resource current;
        final String name;
        final int pos = this.scriptName.lastIndexOf('/');
        if ( pos == -1 ) {
            current = location;
            name = this.scriptName;
        } else {
            current = getResource(resolver, location.getPath() + '/' + this.scriptName.substring(0, pos));
            name = this.scriptName.substring(pos + 1);
        }
        final Iterator<Resource> children = resolver.listChildren(current);
        while (children.hasNext()) {
            final Resource child = children.next();


            if ( !this.isPathAllowed(child.getPath()) ) {
                continue;

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    }


    @Test public void testAdd1Provider() {
        String firstPath = "/rootel";
        final ResourceResolverContext ctx = getResourceResolverContext();
        final ResourceResolver resolver = Mockito.mock(ResourceResolver.class);
        final ResourceProvider first = Mockito.mock(ResourceProvider.class);
        Mockito.when(first.getResource(Mockito.any(ResourceResolver.class), Mockito.startsWith(firstPath))).thenReturn(new TestResource(resolver));


        final Map<String, Object> firstProps = new HashMap<String, Object>();
        firstProps.put(Constants.SERVICE_ID, (long)1);

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        String firstPath = "/rootel";
        String thirdPath = "/apps/sling/sample";
        String secondPath = firstPath + "/child";


        final ResourceResolverContext ctx = getResourceResolverContext();
        final ResourceResolver firstResolver = Mockito.mock(ResourceResolver.class);
        final ResourceProvider first = Mockito.mock(ResourceProvider.class);
        Mockito.when(first.getResource(Mockito.any(ResourceResolver.class), Mockito.startsWith(firstPath))).thenReturn(new TestResource(firstResolver));
        final ResourceResolver secondResolver = Mockito.mock(ResourceResolver.class);
        final ResourceProvider second = Mockito.mock(ResourceProvider.class);
        Mockito.when(second.getResource(Mockito.any(ResourceResolver.class), Mockito.startsWith(secondPath))).thenReturn(new TestResource(secondResolver));
        final ResourceResolver thirdResolver = Mockito.mock(ResourceResolver.class);
        final ResourceProvider third = Mockito.mock(ResourceProvider.class);
        Mockito.when(third.getResource(Mockito.any(ResourceResolver.class), Mockito.startsWith(thirdPath))).thenReturn(new TestResource(thirdResolver));


        final Map<String, Object> firstProps = new HashMap<String, Object>();
        firstProps.put(Constants.SERVICE_ID, (long)1);

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