Examples of org.apache.jackrabbit.oak.spi.state.NodeBuilder

Package org.apache.jackrabbit.oak.spi.state

Examples of org.apache.jackrabbit.oak.spi.state.NodeBuilder

org.apache.jackrabbit.oak.spi.state.NodeBuilder
Builder interface for constructing new {@link NodeState node states}.
A node builder can be thought of as a mutable version of a node state. In addition to property and child node access methods like the ones that are already present in the NodeState interface, the {@code NodeBuilder}interface contains the following key methods:
- The {@code setProperty} and {@code removeProperty} methods formodifying properties
- The {@code getChildNode} method for accessing or modifying an existingsubtree
- The {@code setChildNode} and {@code removeChildNode} methods for adding,replacing or removing a subtree
- The {@code exists} method for checking whether the node represented bya builder exists or is accessible
- The {@code getNodeState} method for getting a frozen snapshot of themodified content tree
All the builders acquired from the same root builder instance are linked so that changes made through one instance automatically become visible in the other builders. For example:
```
 NodeBuilder rootBuilder = root.builder(); NodeBuilder fooBuilder = rootBuilder.getChildNode("foo"); NodeBuilder barBuilder = fooBuilder.getChildNode("bar"); assert !barBuilder.getBoolean("x"); fooBuilder.getChildNode("bar").setProperty("x", Boolean.TRUE); assert barBuilder.getBoolean("x"); assert barBuilder.exists(); fooBuilder.removeChildNode("bar"); assert !barBuilder.exists(); 
```
The {@code getNodeState} method returns a frozen, immutable snapshot of the currentstate of the builder. Providing such a snapshot can be somewhat expensive especially if there are many changes in the builder, so the method should generally only be used as the last step after all intended changes have been made. Meanwhile the accessors in the {@code NodeBuilder} interface can be used to provide efficient read access tothe current state of the tree being modified.
The node states constructed by a builder often retain an internal reference to the base state used by the builder. This allows common node state comparisons to perform really.

    }


    public static NodeBuilder createStandardMappings(NodeBuilder system) {
        checkState(!system.hasChildNode(REP_NAMESPACES));


        NodeBuilder namespaces = system.setChildNode(REP_NAMESPACES);
        namespaces.setProperty(JCR_PRIMARYTYPE, NodeTypeConstants.NT_REP_UNSTRUCTURED, NAME);


        // Standard namespace specified by JCR (default one not included)
        namespaces.setProperty(escapePropertyKey(PREFIX_EMPTY), NAMESPACE_EMPTY);
        namespaces.setProperty(PREFIX_JCR, NAMESPACE_JCR);
        namespaces.setProperty(PREFIX_NT,  NAMESPACE_NT);
        namespaces.setProperty(PREFIX_MIX, NAMESPACE_MIX);
        namespaces.setProperty(PREFIX_XML, NAMESPACE_XML);


        // Namespace included in Jackrabbit 2.x
        namespaces.setProperty(PREFIX_SV, NAMESPACE_SV);
        namespaces.setProperty(PREFIX_REP, NAMESPACE_REP);


        return namespaces;
    }

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                uris.add(uri);
                reverse.put(escapePropertyKey(uri), prefix);
            }
        }


        NodeBuilder data = namespaces.setChildNode(REP_NSDATA);
        data.setProperty(JCR_PRIMARYTYPE, NodeTypeConstants.NT_REP_UNSTRUCTURED, Type.NAME);
        data.setProperty(REP_PREFIXES, prefixes, Type.STRINGS);
        data.setProperty(REP_URIS, uris, Type.STRINGS);
        for (Entry<String, String> e : reverse.entrySet()) {
            data.setProperty(encodeUri(e.getKey()), e.getValue());
        }
    }

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    }


    // testing


    public static Tree setupTestNamespaces(Map<String, String> global) {
        NodeBuilder root = EmptyNodeState.EMPTY_NODE.builder();
        NodeBuilder namespaces = root.child(JCR_SYSTEM).child(REP_NAMESPACES);
        namespaces.setProperty(JCR_PRIMARYTYPE, NodeTypeConstants.NT_REP_UNSTRUCTURED, NAME);
        for (Entry<String, String> entry : global.entrySet()) {
            namespaces.setProperty(escapePropertyKey(entry.getKey()),
                    entry.getValue());
        }
        buildIndexNode(namespaces);
        return new ImmutableTree(root.getNodeState());
    }

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                                 NodeBuilder dest,
                                 VersionSelector selector)
            throws RepositoryException, CommitFailedException {
        // 15.7.6 Restoring Child Nodes
        for (String name : src.getChildNodeNames()) {
            NodeBuilder srcChild = src.getChildNode(name);
            int action = getOPV(dest, srcChild, name);
            if (action == COPY) {
                // replace on destination
                dest.getChildNode(name).remove();
                restoreCopiedNode(srcChild, dest.child(name), selector);
            } else if (action == VERSION) {
                restoreState(srcChild, dest, name, selector);
            }
        }
        for (String name : dest.getChildNodeNames()) {
            if (src.hasChildNode(name)) {
                continue;
            }
            NodeBuilder destChild = dest.getChildNode(name);
            int action = getOPV(dest, destChild, name);
            if (action == COPY || action == VERSION || action == ABORT) {
                dest.getChildNode(name).remove();
            } else if (action == IGNORE) {
                // no action

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            }
        }, true);


        // add the frozen children and histories
        for (String name : src.getChildNodeNames()) {
            NodeBuilder child = src.getChildNode(name);
            String childId = getChildId(srcId, child, name);
            int opv = getOPV(src, child, name);


            if (opv == OnParentVersionAction.ABORT) {
                throw new CommitFailedException(CommitFailedException.VERSION,
                        VersionExceptionCode.OPV_ABORT_ITEM_PRESENT.ordinal(),
                        "Checkin aborted due to OPV abort in " + name);
            }
            if (opv == OnParentVersionAction.VERSION) {
                if (ntMgr.isNodeType(new ImmutableTree(child.getNodeState()), MIX_VERSIONABLE)) {
                    // create frozen versionable child
                    versionedChild(child, dest.child(name));
                } else {
                    // else copy
                    copy(child, childId, dest.child(name));

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                      NodeBuilder dest)
            throws RepositoryException, CommitFailedException {
        initFrozen(dest, src, srcId);
        copyProperties(src, dest, OPVForceCopy.INSTANCE, true);
        for (String name : src.getChildNodeNames()) {
            NodeBuilder child = src.getChildNode(name);
            copy(child, getChildId(srcId, child, name), dest.child(name));
        }
    }

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        }
        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);

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                afterKeys.removeAll(sharedKeys);
            }


            if (!beforeKeys.isEmpty() || !afterKeys.isEmpty()) {
                updateCallback.indexUpdate();
                NodeBuilder index = definition.child(INDEX_CONTENT_NODE_NAME);
                getStrategy(keysToCheckForUniqueness != null).update(
                        index, getPath(), beforeKeys, afterKeys);
                if (keysToCheckForUniqueness != null) {
                    keysToCheckForUniqueness.addAll(afterKeys);
                }

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    public Editor getRootEditor(NodeState before, NodeState after,
            NodeBuilder builder) {
        if (!builder.hasChildNode(JCR_SYSTEM)) {
            return null;
        }
        NodeBuilder system = builder.child(JCR_SYSTEM);
        if (!system.hasChildNode(JCR_VERSIONSTORAGE)) {
            return null;
        }
        NodeBuilder versionStorage = system.child(JCR_VERSIONSTORAGE);
        return new VisibleEditor(new CompositeEditor(
                new VersionEditor(versionStorage, builder),
                new VersionStorageEditor(versionStorage, builder)));
    }

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            insert(index, key, path);
        }
    }


    private static void remove(NodeBuilder index, String key, String value) {
        NodeBuilder builder = index.getChildNode(key);
        if (builder.exists()) {
            // Collect all builders along the given path
            Deque<NodeBuilder> builders = newArrayDeque();
            builders.addFirst(builder);


            // Descend to the correct location in the index tree
            for (String name : PathUtils.elements(value)) {
                builder = builder.getChildNode(name);
                builders.addFirst(builder);
            }


            // Drop the match value,  if present
            if (builder.exists()) {
                builder.removeProperty("match");
            }


            // Prune all index nodes that are no longer needed
            for (NodeBuilder node : builders) {
                if (node.getBoolean("match") || node.getChildNodeCount(1) > 0) {

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