Examples of org.jboss.dna.graph.Subgraph

org.jboss.dna.graph.Subgraph
A subgraph returned by the {@link Graph}, containing the nodes in the subgraph as well as the properties and children for each of those nodes. The {@link #iterator()} method may be used to walk the nodes in the subgraph in a pre-order traversal.
Since this subgraph has a single {@link #getLocation() node that is the top of the subgraph}, the methods that take a String path or {@link Path path object} will accept absolute or relative paths.

This subgraph will not contain any {@link #iterator() nodes} that exist below the {@link #getMaximumDepth() maximum depth}. Also, all nodes included in the subgraph have all their properties and children. However, nodes that are at the maximum depth of the subgraph will contain the locations for child nodes that are below the maximum depth and therefore not included in this subgraph.

                }
                // Update the persistent information ...
                cache.nodeOperations.materialize(persistentNode, this);
            } else {
                // Then read the node from the store ...
                Subgraph subgraph = cache.store.getSubgraphOfDepth(depth).at(getLocation());
                Location actualLocation = subgraph.getLocation();
                if (!this.location.equals(actualLocation)) {
                    // The actual location is changed, so update it ...
                    this.location = actualLocation;
                }
                // Update the persistent information ...
                cache.nodeOperations.materialize(subgraph.getRoot(), this);
                // Now update any nodes below this node ...
                for (org.jboss.dna.graph.Node persistentNode : subgraph) {
                    // Find the node at the path ...
                    Path relativePath = persistentNode.getLocation().getPath().relativeTo(path);
                    Node<Payload, PropertyPayload> node = cache.findNodeRelativeTo(this, relativePath);

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        // Read the subgraph that represents the repository ...
        PathFactory pathFactory = getExecutionContext().getValueFactories().getPathFactory();
        Path repositoriesPath = pathFactory.create(configuration.getPath(), DnaLexicon.REPOSITORIES);
        Path repositoryPath = pathFactory.create(repositoriesPath, repositoryName);
        Graph configuration = getConfigurationGraph();
        Subgraph subgraph = configuration.getSubgraphOfDepth(6).at(repositoryPath);


        // Read the options ...
        Node optionsNode = subgraph.getNode(DnaLexicon.OPTIONS);
        if (optionsNode != null) {
            for (Location optionLocation : optionsNode.getChildren()) {
                Node optionNode = configuration.getNodeAt(optionLocation);
                Path.Segment segment = optionLocation.getPath().getLastSegment();
                Property valueProperty = optionNode.getProperty(DnaLexicon.VALUE);
                if (valueProperty == null) continue;
                Option option = Option.findOption(segment.getName().getLocalName());
                if (option == null) continue;
                options.put(option, valueProperty.getFirstValue().toString());
            }
        }


        // Read the namespaces ...
        ExecutionContext context = getExecutionContext();
        Node namespacesNode = subgraph.getNode(DnaLexicon.NAMESPACES);
        if (namespacesNode != null) {
            GraphNamespaceRegistry registry = new GraphNamespaceRegistry(configuration, namespacesNode.getLocation().getPath(),
                                                                         DnaLexicon.NAMESPACE_URI);
            context = context.with(registry);
        }


        // Get the name of the source ...
        Property property = subgraph.getRoot().getProperty(DnaLexicon.SOURCE_NAME);
        if (property == null || property.isEmpty()) {
            String readableName = readable(DnaLexicon.SOURCE_NAME);
            String readablePath = readable(subgraph.getLocation());
            String msg = JcrI18n.propertyNotFoundOnNode.text(readableName, readablePath, configuration.getCurrentWorkspaceName());
            throw new RepositoryException(msg);
        }
        String sourceName = context.getValueFactories().getStringFactory().create(property.getFirstValue());


        // Find the capabilities ...
        RepositorySource source = getRepositorySource(sourceName);
        RepositorySourceCapabilities capabilities = source != null ? source.getCapabilities() : null;
        // Create the repository ...
        JcrRepository repository = new JcrRepository(context, connectionFactory, sourceName,
                                                     getRepositoryService().getRepositoryLibrary(), capabilities, descriptors,
                                                     options);


        // Register all the the node types ...
        Node nodeTypesNode = subgraph.getNode(JcrLexicon.NODE_TYPES);
        if (nodeTypesNode != null) {
            repository.getRepositoryTypeManager().registerNodeTypes(subgraph, nodeTypesNode.getLocation());// throws exception
        }


        return repository;

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        DateTime now = dateFactory.create();
        DateTime newExpirationDate = now.plusMillis(JcrEngine.LOCK_EXTENSION_INTERVAL_IN_MILLIS);


        Path locksPath = pathFactory.createAbsolutePath(JcrLexicon.SYSTEM, DnaLexicon.LOCKS);


        Subgraph locksGraph = null;
        try {
            locksGraph = systemGraph.getSubgraphOfDepth(2).at(locksPath);
        } catch (PathNotFoundException pnfe) {
            // It's possible for this to run before the dna:locks child node gets added to the /jcr:system node.
            return;
        }


        for (Location lockLocation : locksGraph.getRoot().getChildren()) {
            Node lockNode = locksGraph.getNode(lockLocation);


            Boolean isSessionScoped = booleanFactory.create(lockNode.getProperty(DnaLexicon.IS_SESSION_SCOPED).getFirstValue());


            if (!isSessionScoped) continue;
            String lockingSession = stringFactory.create(lockNode.getProperty(DnaLexicon.LOCKING_SESSION).getFirstValue());

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                                     Name... names ) {
            super(returnObject, batch, path, names);
            // Load the current options ...
            try {
                Path optionsPath = context.getValueFactories().getPathFactory().create(path, DnaLexicon.OPTIONS);
                Subgraph options = batch.getGraph().getSubgraphOfDepth(2).at(optionsPath);
                for (Location optionChild : options.getRoot().getChildren()) {
                    Node option = options.getNode(optionChild);
                    Property property = option.getProperty(DnaLexicon.VALUE);
                    if (property != null && property.isEmpty()) {
                        try {
                            Option key = Option.findOption(optionChild.getPath()
                                                                      .getLastSegment()

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    protected Set<UUID> getUuidsInBranch( Path sourcePath,
                                          String workspace ) {
        String existingWorkspace = graph.getCurrentWorkspaceName();
        try {
            graph.useWorkspace(workspace);
            Subgraph subgraph = graph.getSubgraphOfDepth(ReadBranchRequest.NO_MAXIMUM_DEPTH).at(sourcePath);
            // Collect up the UUIDs; we use UUID here because that's what JCR requires ...
            Set<UUID> uuids = new HashSet<UUID>();
            for (SubgraphNode nodeInSubgraph : subgraph) {
                UUID uuid = nodeInSubgraph.getLocation().getUuid();
                if (uuid != null) uuids.add(uuid);

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                     .and()
                     .save();


        // Verify that the graph has been updated correctly ...
        DnaConfiguration.ConfigurationDefinition content = configuration.getConfigurationDefinition();
        Subgraph subgraph = content.graph().getSubgraphOfDepth(3).at("/");
        assertThat(subgraph.getNode("/dna:sources"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:sources/name"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:sources/name"), hasProperty(DnaLexicon.RETRY_LIMIT, 100));
        assertThat(subgraph.getNode("/dna:sources/name"), hasProperty("defaultCachePolicy", cachePolicy));
        assertThat(subgraph.getNode("/dna:sources/name"), hasProperty("defaultWorkspaceName", "default workspace name"));
        assertThat(subgraph.getNode("/dna:sources/name"), hasProperty("rootNodeUuid", rootUuid));
    }

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        engine = configuration.build();
        engine.start();


        // Verify that the graph has been updated correctly ...
        Graph config = engine.getGraph(JcrConfiguration.DEFAULT_CONFIGURATION_SOURCE_NAME);
        Subgraph subgraph = config.getSubgraphOfDepth(6).at("/");
        assertThat(subgraph.getNode("/dna:sources"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:sources/Source2"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:sources/Source2"), hasProperty(DnaLexicon.CLASSNAME,
                                                                         InMemoryRepositorySource.class.getName()));
        assertThat(subgraph.getNode("/dna:repositories"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:repositories/JCR Repository"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:repositories/JCR Repository"), hasProperty(DnaLexicon.SOURCE_NAME, "Source2"));
        assertThat(subgraph.getNode("/dna:repositories/JCR Repository/dna:options"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:repositories/JCR Repository/dna:options/JAAS_LOGIN_CONFIG_NAME"),
                   hasProperty(DnaLexicon.VALUE, "test"));


        JcrRepository repository = engine.getRepository("JCR Repository");


        Map<Option, String> options = new HashMap<Option, String>();

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        assertThat(configuration.getProblems().isEmpty(), is(true));


        // Verify that the graph has been updated correctly ...
        DnaConfiguration.ConfigurationDefinition content = configuration.getConfigurationDefinition();
        Subgraph subgraph = content.graph().getSubgraphOfDepth(6).at("/");


        assertThat(subgraph.getNode("/dna:sources"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:sources/Cars"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:sources/Cars"), hasProperty(DnaLexicon.RETRY_LIMIT, "3"));
        assertThat(subgraph.getNode("/dna:sources/Cars"), hasProperty(DnaLexicon.CLASSNAME,
                                                                      InMemoryRepositorySource.class.getName()));
        assertThat(subgraph.getNode("/dna:sources/Aircraft"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:sources/Aircraft"), hasProperty("defaultWorkspaceName", "default"));
        assertThat(subgraph.getNode("/dna:sources/Aircraft"), hasProperty(DnaLexicon.CLASSNAME,
                                                                          InMemoryRepositorySource.class.getName()));
        assertThat(subgraph.getNode("/dna:sources/Cache"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:sources/Cache"), hasProperty(DnaLexicon.CLASSNAME,
                                                                       InMemoryRepositorySource.class.getName()));


        assertThat(subgraph.getNode("/dna:mimeTypeDetectors").getChildren(), hasChild(segment("Detector")));
        assertThat(subgraph.getNode("/dna:mimeTypeDetectors/Detector"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:mimeTypeDetectors/Detector"),
                   hasProperty(DnaLexicon.DESCRIPTION, "Standard extension-based MIME type detector"));
        assertThat(subgraph.getNode("/dna:mimeTypeDetectors/Detector"),
                   hasProperty(DnaLexicon.CLASSNAME, ExtensionBasedMimeTypeDetector.class.getName()));


        assertThat(subgraph.getNode("/dna:repositories").getChildren(), hasChild(segment("Car Repository")));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository"), hasProperty(DnaLexicon.SOURCE_NAME, "Cars"));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository").getChildren(), hasChild(segment("dna:options")));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository/dna:options"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository/dna:options").getChildren(),
                   hasChild(segment("jaasLoginConfigName")));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository/dna:options/jaasLoginConfigName"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository/dna:options/jaasLoginConfigName"),
                   hasProperty(DnaLexicon.VALUE, "dna-jcr"));


        // Initialize IDTrust and a policy file (which defines the "dna-jcr" login config name)
        String configFile = "security/jaas.conf.xml";
        IDTrustConfiguration idtrustConfig = new IDTrustConfiguration();

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                                .getNamespaceRegistry()
                                .isRegisteredNamespaceUri("http://www.jboss.org/dna/test/1.0"), is(true));


        // Verify that the graph has been updated correctly ...
        DnaConfiguration.ConfigurationDefinition content = configuration.getConfigurationDefinition();
        Subgraph subgraph = content.graph().getSubgraphOfDepth(6).at("/");


        assertThat(subgraph.getNode("/dna:repositories").getChildren(), hasChild(segment("Car Repository")));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository"), is(notNullValue()));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository"), hasProperty(DnaLexicon.SOURCE_NAME, "Cars"));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository").getChildren(), hasChild(segment("dna:options")));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository/jcr:nodeTypes"), is(notNullValue()));
        // for (Location child : subgraph.getNode("/dna:repositories/Car Repository/dna:nodeTypes").getChildren()) {
        // System.out.println(child.getPath().getLastSegment().getString(context().getNamespaceRegistry()));
        // }
        assertThat(subgraph.getNode("/dna:repositories/Car Repository/jcr:nodeTypes").getChildren(),
                   hasChildren(segment("dnatest:noSameNameSibs"),
                               segment("dnatest:referenceableUnstructured"),
                               segment("dnatest:nodeWithMandatoryProperty"),
                               segment("dnatest:nodeWithMandatoryChild"),
                               segment("dnatest:unorderableUnstructured")));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository/dna:namespaces"), is(notNullValue()));


        // Check that the namespace in the CND file was persisted correctly ...
        assertThat(subgraph.getNode("/dna:repositories/Car Repository/dna:namespaces").getChildren(),
                   hasChild(segment("dnatest")));
        assertThat(subgraph.getNode("/dna:repositories/Car Repository/dna:namespaces/dnatest"),
                   hasProperty(DnaLexicon.NAMESPACE_URI, "http://www.jboss.org/dna/test/1.0"));


        // Initialize IDTrust and a policy file (which defines the "dna-jcr" login config name)
        String configFile = "security/jaas.conf.xml";
        IDTrustConfiguration idtrustConfig = new IDTrustConfiguration();

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        // Create a graph to access the configuration ...
        Graph config = Graph.create(configurationSourceName, connectionFactory, context);


        // Read the federated repositories subgraph (of max depth 4)...
        Subgraph repositories = config.getSubgraphOfDepth(4).at(getConfigurationSourcePath());


        // Set up the default cache policy by reading the "dna:federation" node ...
        CachePolicy defaultCachePolicy = null;
        Node federation = repositories.getNode(DNA_FEDERATION_SEGMENT);
        if (federation == null) {
            I18n msg = FederationI18n.requiredNodeDoesNotExistRelativeToNode;
            throw new FederationException(msg.text(DNA_FEDERATION_SEGMENT, repositories.getLocation().getPath()));
        }
        Property timeToLiveProperty = federation.getProperty(nameFactory.create(CACHE_POLICY_TIME_TO_LIVE_CONFIG_PROPERTY_NAME));
        if (timeToLiveProperty != null && !timeToLiveProperty.isEmpty()) {
            long timeToCacheInMillis = longFactory.create(timeToLiveProperty.getValues().next());
            BasicCachePolicy policy = new BasicCachePolicy(timeToCacheInMillis, TimeUnit.MILLISECONDS);
            defaultCachePolicy = policy.getUnmodifiable();
        }


        // Read the "dna:cache" and its projection ...
        String cacheNodePath = DNA_FEDERATION_SEGMENT + "/" + DNA_CACHE_SEGMENT;
        Node cacheNode = repositories.getNode(cacheNodePath);
        if (cacheNode == null) {
            I18n msg = FederationI18n.requiredNodeDoesNotExistRelativeToNode;
            throw new FederationException(msg.text(cacheNodePath, repositories.getLocation().getPath()));
        }
        Projection cacheProjection = null;
        for (Location cacheProjectionLocation : cacheNode) {
            Node projection = repositories.getNode(cacheProjectionLocation);
            cacheProjection = createProjection(context, projectionParser, projection, problems);
        }


        // Read the "dna:projections" and create a projection for each ...
        String projectionsPath = DNA_FEDERATION_SEGMENT + "/" + DNA_PROJECTIONS_SEGMENT;
        Node projectionsNode = repositories.getNode(projectionsPath);
        if (projectionsNode == null) {
            I18n msg = FederationI18n.requiredNodeDoesNotExistRelativeToNode;
            throw new FederationException(msg.text(projectionsNode, repositories.getLocation().getPath()));
        }
        List<Projection> sourceProjections = new LinkedList<Projection>();
        for (Location location : projectionsNode) {
            Node projection = repositories.getNode(location);
            sourceProjections.add(createProjection(context, projectionParser, projection, problems));
        }


        return new FederatedRepositoryConfig(repositoryName, cacheProjection, sourceProjections, defaultCachePolicy);
    }

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Related Classes of org.jboss.dna.graph.Subgraph

org.jboss.dna.connector.federation.FederatedRepositorySource

org.jboss.dna.graph.connector.federation.AbstractFederatedRepositorySourceIntegrationTest

org.jboss.dna.graph.connector.federation.FederatedRepositorySource

org.jboss.dna.graph.connector.inmemory.InMemoryConnectorReadableTest

org.jboss.dna.graph.connector.test.AbstractConnectorTest

org.jboss.dna.graph.connector.test.ReadableConnectorTest

org.jboss.dna.graph.connector.test.WorkspaceConnectorTest

org.jboss.dna.graph.connector.test.WritableConnectorTest

org.jboss.dna.graph.property.basic.GraphNamespaceRegistry

org.jboss.dna.graph.session.GraphSession$Node

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