Examples of org.apache.jackrabbit.oak.plugins.tree.ImmutableTree

Package org.apache.jackrabbit.oak.plugins.tree

Examples of org.apache.jackrabbit.oak.plugins.tree.ImmutableTree

org.apache.jackrabbit.oak.plugins.tree.ImmutableTree
Immutable implementation of the {@code Tree} interface in order to providethe much feature rich API functionality for a given {@code NodeState}.
Tree hierarchy
Due to the nature of this {@code Tree} implementation creating a properhierarchical view of the tree structure is the responsibility of the caller. It is recommended to start with the state of the {@link #ImmutableTree(org.apache.jackrabbit.oak.spi.state.NodeState) root node}and build up the hierarchy by calling {@link #ImmutableTree(ImmutableTree,String,org.apache.jackrabbit.oak.spi.state.NodeState)}for every subsequent child state. Note, that this implementation will not perform any kind of validation of the passed state and methods like {@link #isRoot()}, {@link #getName()} or {@link #getPath()} will just make use of the hierarchy that has beencreate by that sequence. In order to create a disconnected individual tree in cases where the hierarchy information is not (yet) need or known it is suggested to use {@link #ImmutableTree(ImmutableTree.ParentProvider,String,org.apache.jackrabbit.oak.spi.state.NodeState)}an specify an appropriate {@code ParentProvider} implementation.
ParentProvider
Apart from create the tree hierarchy in traversal mode this tree implementation allows to instantiate disconnected trees that depending on the use may never or on demand retrieve hierarchy information. The following default implementations of this internal interface are present:
- {@link DefaultParentProvider}: used with the default usage where the parent tree is passed to the constructor
- {@link ParentProvider#ROOT_PROVIDER}: the default parent provider for the root tree. All children will get {@link DefaultParentProvider}
- {@link ParentProvider#UNSUPPORTED}: throws {@code UnsupportedOperationException}upon hierarchy related methods like {@link #getParent()}, {@link #getPath()}
Equality and hash code
In contrast to {@link org.apache.jackrabbit.oak.core.MutableTree} the {@code ImmutableTree} implements{@link Object#equals(Object)} and {@link Object#hashCode()}: Two {@code ImmutableTree}s are consider equal if their name and the underlying {@code NodeState}s are equal. Note however, that according to the contract defined in {@code NodeState} theseobjects are not expected to be used as hash keys.

            throws RepositoryException {
        if (!node.hasProperty(JCR_UUID)) {
            // quick check without looking at type hierarchy
            return false;
        }
        ImmutableTree tree = new ImmutableTree(node.getNodeState());
        return ntMgr.isNodeType(tree, MIX_REFERENCEABLE);
    }

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            throws RepositoryException {
        // ignore hidden tree
        if (childName.startsWith(":")) {
            return IGNORE;
        }
        ImmutableTree parentTree = new ImmutableTree(parent.getNodeState());
        NodeState childState;
        if (NT_FROZENNODE.equals(child.getName(JCR_PRIMARYTYPE))) {
            // need to translate into a regular node to get proper OPV value
            NodeBuilder builder = new MemoryNodeBuilder(EmptyNodeState.EMPTY_NODE);
            builder.setProperty(JCR_PRIMARYTYPE, child.getName(JCR_FROZENPRIMARYTYPE), Type.NAME);
            builder.setProperty(JCR_MIXINTYPES, child.getNames(JCR_MIXINTYPES), Type.NAMES);
            childState = builder.getNodeState();
        } else {
            childState = child.getNodeState();
        }
        ImmutableTree childTree = new ImmutableTree(
                parentTree, childName, childState);
        return ntMgr.getDefinition(parentTree, childTree).getOnParentVersion();
    }

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            throws RepositoryException {
        if (property.getName().charAt(0) == ':') {
            // FIXME: handle child order properly
            return OnParentVersionAction.COPY;
        } else {
            return ntMgr.getDefinition(new ImmutableTree(node.getNodeState()),
                    property, false).getOnParentVersion();
        }
    }

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    }


    @Nonnull
    @Override
    protected Tree getVersionStorage() {
        return new ImmutableTree(versionStorageNode.getNodeState());
    }

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            this.builder = parent.builder.child(name);
            this.path = PathUtils.concat(parent.path, name);
        }


        private boolean isVersionable(ReadWriteVersionManager versionManager) {
            Tree tree = new ImmutableTree(ImmutableTree.ParentProvider.UNSUPPORTED, PathUtils.getName(path), builder.getNodeState());
            return versionManager.isVersionable(tree);
        }

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    }


    private Validator visibleValidator(@Nonnull ImmutableTree source,
                                       @Nonnull ImmutableTree dest) {
        // TODO improve: avoid calculating the 'before' permissions in case the current parent permissions already point to the correct tree.
        ImmutableTree parent = moveCtx.rootBefore.getTree("/");
        TreePermission tp = getPermissionProvider().getTreePermission(parent, TreePermission.EMPTY);
        for (String n : source.getPath().split("/")) {
            tp = tp.getChildPermission(n, parent.getChild(n).getNodeState());
        }
        Validator validator = createValidator(source, dest, tp, this);
        return new VisibleValidator(validator, true, false);
    }

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        private boolean processAdd(ImmutableTree child, MoveAwarePermissionValidator validator) throws CommitFailedException {
            // FIXME: respect and properly handle move-operations in the subtree
            String sourcePath = moveTracker.getSourcePath(child.getPath());
            if (sourcePath != null) {
                ImmutableTree source = rootBefore.getTree(sourcePath);
                if (source.exists()) {
                    // check permissions for adding the moved node at the target location.
                    validator.checkPermissions(child, false, Permissions.ADD_NODE | Permissions.NODE_TYPE_MANAGEMENT);
                    checkPermissions(source, Permissions.REMOVE_NODE);
                    return diff(source, child, validator);
                }

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        private boolean processDelete(ImmutableTree child, MoveAwarePermissionValidator validator) throws CommitFailedException {
            // FIXME: respect and properly handle move-operations in the subtree
            String destPath = moveTracker.getDestPath(child.getPath());
            if (destPath != null) {
                ImmutableTree dest = rootAfter.getTree(destPath);
                if (dest.exists()) {
                    // check permissions for removing that node.
                    validator.checkPermissions(child, true, Permissions.REMOVE_NODE);
                    checkPermissions(dest, Permissions.ADD_NODE|Permissions.NODE_TYPE_MANAGEMENT);
                    return diff(child, dest, validator);
                }

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            }
        }
        reverse.setProperty(REP_PREFIXES, mappings.keySet(), STRINGS);
        reverse.setProperty(REP_URIS, mappings.values(), STRINGS);


        this.namespaces = new ImmutableTree(forward.getNodeState());
        this.nsdata = new ImmutableTree(reverse.getNodeState());
    }

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public final class ImmutableRoot implements Root {


    private final ImmutableTree rootTree;


    public ImmutableRoot(@Nonnull NodeState rootState) {
        this(new ImmutableTree(rootState));
    }

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org.apache.jackrabbit.oak.core.ImmutableTreeTest

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org.apache.jackrabbit.oak.plugins.commit.ConflictValidatorProvider

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org.apache.jackrabbit.oak.plugins.observation.filter.ACFilter

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Examples of org.apache.jackrabbit.oak.plugins.tree.ImmutableTree

Tree hierarchy

ParentProvider

Equality and hash code

Related Classes of org.apache.jackrabbit.oak.plugins.tree.ImmutableTree