Examples of org.modeshape.jcr.cache.SessionCache$PreSave

org.modeshape.jcr.cache.SessionCache
The definition of a callback that can be implemented and passed to {@link SessionCache#save(SessionCache,PreSave)} and{@link SessionCache#save(Set,SessionCache,PreSave)}, allowing the caller to recieve a hook where they can interrogate each of the changed nodes and perform additional logic prior to the actual persisting of the changes. Note that implementations are free to make additional modifications to the supplied nodes, and even create additional nodes or change persistent but unchanged nodes, as long as these operations are done within the same calling thread.

        AbstractJcrNode parentNode = session.node(path.getParent());
        AbstractJcrNode existingNode = null;
        AbstractJcrNode nodeToCheckLock;


        JcrVersionNode jcrVersion = (JcrVersionNode)version;
        SessionCache cache = session.cache();
        PropertyFactory propFactory = session.propertyFactory();


        try {
            existingNode = parentNode.childNode(path.getLastSegment(), null);
            nodeToCheckLock = existingNode;

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        JcrSession removeSession = session.spawnSession(false);
        AbstractJcrNode node = removeSession.getNode(absPath);
        checkVersionable(node);


        SessionCache systemCache = session.createSystemCache(false);
        removeHistories(node, systemCache);
        node.remove();
        removeSession.cache().save(systemCache, null);
    }

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        if (problems.hasErrors()) {
            String msg = JcrI18n.invalidIndexDefinitions.text(repository.name(), problems);
            throw new InvalidIndexDefinitionException(new JcrProblems(problems), msg);
        }


        SessionCache systemCache = repository.createSystemSession(context, false);
        SystemContent system = new SystemContent(systemCache);
        for (IndexDefinition defn : validated) {
            String providerName = defn.getProviderName();


            // Determine if the index should be enabled ...
            defn = RepositoryIndexDefinition.createFrom(defn, providers.containsKey(providerName));


            // Write the definition to the system area ...
            system.store(defn, allowUpdate);
        }
        // Save the changes ...
        systemCache.save();


        // Refresh the immutable snapshot ...
        this.indexes = readIndexDefinitions();
    }

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    @Override
    public void unregisterIndexes( String... indexNames ) throws NoSuchIndexException, RepositoryException {
        if (indexNames == null || indexNames.length == 0) return;


        // Remove the definition from the system area ...
        SessionCache systemCache = repository.createSystemSession(context, false);
        SystemContent system = new SystemContent(systemCache);
        for (String indexName : indexNames) {
            IndexDefinition defn = indexes.getIndexDefinitions().get(indexName);
            if (defn == null) {
                throw new NoSuchIndexException(JcrI18n.indexDoesNotExist.text(indexName, repository.name()));

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    protected RepositoryIndexes readIndexDefinitions() {
        // There were at least some changes ...
        NodeTypes nodeTypes = repository.nodeTypeManager().getNodeTypes();
        try {
            // Read the affected index definitions ...
            SessionCache systemCache = repository.createSystemSession(context, false);
            SystemContent system = new SystemContent(systemCache);
            Collection<IndexDefinition> indexDefns = system.readAllIndexDefinitions(providers.keySet());
            this.indexes = new Indexes(context, indexDefns, nodeTypes);
            return this.indexes;
        } catch (WorkspaceNotFoundException e) {

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                    sourceProperties.put(property.getName(), property);
                }
            }


            MutableCachedNode mutable = targetNode.mutable();
            SessionCache mutableCache = targetNode.session().cache();
            PropertyIterator existingPropIter = targetNode.getProperties();
            while (existingPropIter.hasNext()) {
                AbstractJcrProperty jcrProp = (AbstractJcrProperty)existingPropIter.nextProperty();
                Name propName = jcrProp.name();

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                parentNode.addSharedNode(sourceNode, newNodeName);
                // save the changes in the clone session ...
                cloneSession.save();
            } else {
                // use the source session to load all the keys from the source subgraph
                SessionCache sourceCache = sourceSession.cache();
                Set<NodeKey> sourceKeys = sourceCache.getNodeKeysAtAndBelow(sourceNode.key());
                sourceKeys = filterNodeKeysForClone(sourceKeys, sourceCache);


                for (NodeKey srcKey : sourceKeys) {
                    try {
                        // use the current session to try and load each cloneSessionNode. If we find such a cloneSessionNode in
                        // the current session,
                        // we need to perform some checks
                        AbstractJcrNode srcNode = sourceSession.node(srcKey, null);
                        boolean isExternal = !srcKey.getSourceKey().equalsIgnoreCase(sourceCache.getRootKey().getSourceKey());
                        if (isExternal && session.nodeExists(srcKey) && !removeExisting) {
                            throw new ItemExistsException(JcrI18n.itemAlreadyExistsWithUuid.text(srcKey, workspaceName,
                                                                                                 srcNode.getPath()));
                        }
                        NodeKey cloneKey = parentNode.key().withId(srcNode.key().getIdentifier());

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                              NodeKey sourceNodeKey,
                              JcrSession cloneSession,
                              NodeKey cloneNodeKey ) throws RepositoryException {
        assert !cloneSession.cache().isReadOnly();


        SessionCache sourceCache = sourceSession.cache();
        CachedNode sourceNode = sourceCache.getNode(sourceNodeKey);


        SessionCache cloneCache = cloneSession.cache();
        MutableCachedNode mutableCloneNode = cloneSession.node(cloneNodeKey, null).mutable();


        /**
         * Perform the clone at the cache level - clone all properties & children
         */

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                node.addMixin("mix:lockable");
                session.save();
                session.lockManager().lock(node, true, false, Long.MAX_VALUE, null);


                // manipulate that lock using the system cache to simulate corrupt data
                SessionCache systemSession = repository.createSystemSession(repository.runningState().context(), false);
                SystemContent systemContent = new SystemContent(systemSession);
                ChildReferences childReferences = systemContent.locksNode().getChildReferences(systemSession);
                assertFalse("No locks found", childReferences.isEmpty());
                for (ChildReference childReference : childReferences) {
                    MutableCachedNode lock = systemSession.mutable(childReference.getKey());
                    lock.setProperty(systemSession, propertyFactory.create(ModeShapeLexicon.IS_DEEP, true));
                    lock.setProperty(systemSession, propertyFactory.create(ModeShapeLexicon.LOCKED_KEY, node.key().toString()));
                    lock.setProperty(systemSession, propertyFactory.create(ModeShapeLexicon.SESSION_SCOPE, false));
                }
                systemSession.save();
                return null;
            }
        }, "config/repo-config-persistent-no-indexes.json");


        // second run should run the upgrade
        startRunStop(new RepositoryOperation() {
            @SuppressWarnings( "deprecation" )
            @Override
            public Void call() throws Exception {
                // manipulate that lock using the system cache to simulate corrupt data
                SessionCache systemSession = repository.createSystemSession(repository.runningState().context(), true);
                SystemContent systemContent = new SystemContent(systemSession);
                ChildReferences childReferences = systemContent.locksNode().getChildReferences(systemSession);
                assertFalse("No locks found", childReferences.isEmpty());
                for (ChildReference childReference : childReferences) {
                    CachedNode lock = systemSession.getNode(childReference.getKey());
                    assertNull("Property not removed", lock.getProperty(ModeShapeLexicon.IS_DEEP, systemSession));
                    assertNull("Property not removed", lock.getProperty(ModeShapeLexicon.LOCKED_KEY, systemSession));
                    assertNull("Property not removed", lock.getProperty(ModeShapeLexicon.SESSION_SCOPE, systemSession));
                }
                return null;

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                                          new Privilege[] {acm.privilegeFromName(Privilege.JCR_ALL)});
                acm.setPolicy("/testNode", acl);
                session.save();


                // remove the new property from 4.0 which actually stores the ACL count to simulate a pre 4.0 repository
                SessionCache systemSession = repository.createSystemSession(repository.runningState().context(), false);
                SystemContent systemContent = new SystemContent(systemSession);
                MutableCachedNode systemNode = systemContent.mutableSystemNode();
                systemNode.removeProperty(systemSession, ModeShapeLexicon.ACL_COUNT);
                systemSession.save();
                return null;
            }
        }, config);


        // second run should run the upgrade
        startRunStop(new RepositoryOperation() {
            @Override
            public Void call() throws Exception {
                // check that the upgrade function correctly added the new property
                SessionCache systemSession = repository.createSystemSession(repository.runningState().context(), false);
                SystemContent systemContent = new SystemContent(systemSession);
                MutableCachedNode systemNode = systemContent.mutableSystemNode();
                Property aclCountProp = systemNode.getProperty(ModeShapeLexicon.ACL_COUNT, systemSession);
                assertNotNull("ACL count property not found after upgrade", aclCountProp);
                assertEquals(1, Long.valueOf(aclCountProp.getFirstValue().toString()).longValue());


                // force a 2nd upgrade
                changeLastUpgradeId(repository, Upgrades.ModeShape_4_0_0_Alpha1.INSTANCE.getId() - 1);


                // remove all ACLs
                JcrSession session = repository.login();
                AccessControlManager acm = session.getAccessControlManager();
                // TODO author=Horia Chiorean date=25-Mar-14 description=Why null ?!
                acm.removePolicy("/testNode", null);
                session.save();


                // remove the new property from 4.0 which actually stores the ACL count to simulate a pre 4.0 repository
                systemNode.removeProperty(systemSession, ModeShapeLexicon.ACL_COUNT);
                systemSession.save();
                return null;
            }
        }, config);


        // check that the upgrade disabled ACLs
        startRunStop(new RepositoryOperation() {
            @Override
            public Void call() throws Exception {


                SessionCache systemSession = repository.createSystemSession(repository.runningState().context(), true);
                SystemContent systemContent = new SystemContent(systemSession);
                CachedNode systemNode = systemContent.systemNode();
                Property aclCountProp = systemNode.getProperty(ModeShapeLexicon.ACL_COUNT, systemSession);
                assertNotNull("ACL count property not found after upgrade", aclCountProp);
                assertEquals(0, Long.valueOf(aclCountProp.getFirstValue().toString()).longValue());

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Related Classes of org.modeshape.jcr.cache.SessionCache$PreSave

org.modeshape.jcr.AbstractJcrNode

org.modeshape.jcr.AccessControlManagerImpl

org.modeshape.jcr.cache.document.WritableSessionCacheTest

org.modeshape.jcr.Connectors

org.modeshape.jcr.JcrLockManager

org.modeshape.jcr.JcrNode

org.modeshape.jcr.JcrRepositoryStartupTest

org.modeshape.jcr.JcrSession

org.modeshape.jcr.JcrSession$JcrPreSave

org.modeshape.jcr.JcrSharedNode

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