org.apache.jackrabbit.mk.model
Class StagedNodeTree

java.lang.Object
  org.apache.jackrabbit.mk.model.StagedNodeTree

public class StagedNodeTree
extends Object

A StagedNodeTree provides methods to manipulate a specific revision of the tree. The changes are recorded and can be persisted by calling persist(RevisionStore.PutToken).

Constructor Summary

StagedNodeTree(RevisionStore store, Id baseRevisionId)
Creates a new StagedNodeTree instance.

Method Summary

void	add(String parentNodePath, String nodeName, JsonObject nodeData) Creates a new node named nodeName at parentNodePath.
void	copy(String srcPath, String destPath) Copies the subtree rooted at srcPath to destPath.
boolean	isEmpty() Returns true if there are no staged changes, otherwise returns false.
Id	merge(StoredNode ourRoot, Id newBaseRevisionId, Id commonAncestorRevisionId, RevisionStore.PutToken token) Performs a three-way merge merging our tree (rooted at ourRoot) and their tree (identified by newBaseRevisionId), using the common ancestor revision commonAncestorRevisionId as base reference.
void	move(String srcPath, String destPath) Moves the subtree rooted at srcPath to destPath.
Id	persist(RevisionStore.PutToken token) Persists the staged nodes and returns the Id of the new root node.
void	remove(String nodePath) Removes the node at nodePath.
void	reset(Id newBaseRevisionId) Discards all staged changes and resets the base revision to the specified new revision id.
void	setProperty(String nodePath, String propName, String propValue) Creates or updates the property named propName of the specified node.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StagedNodeTree

public StagedNodeTree(RevisionStore store,
                      Id baseRevisionId)

Creates a new StagedNodeTree instance.

Parameters:

store - revision store used to read from and persist changes

baseRevisionId - id of revision the changes should be based upon

Method Detail

reset

public void reset(Id newBaseRevisionId)

Discards all staged changes and resets the base revision to the specified new revision id.

Parameters:

newBaseRevisionId - id of revision the changes should be based upon

isEmpty

public boolean isEmpty()

Returns true if there are no staged changes, otherwise returns false.

Returns:

true if there are no staged changes, otherwise returns false.

persist

public Id persist(RevisionStore.PutToken token)
           throws Exception

Persists the staged nodes and returns the Id of the new root node.

Parameters:

token -

Returns:

Id of new root node or null if there are no changes to persist.

Throws:

Exception - if an error occurs

merge

public Id merge(StoredNode ourRoot,
                Id newBaseRevisionId,
                Id commonAncestorRevisionId,
                RevisionStore.PutToken token)
         throws Exception

Performs a three-way merge merging our tree (rooted at ourRoot) and their tree (identified by newBaseRevisionId), using the common ancestor revision commonAncestorRevisionId as base reference.

This instance will be initially reset to newBaseRevisionId, discarding all currently staged changes.

Parameters:

ourRoot -

newBaseRevisionId -

commonAncestorRevisionId -

token -

Returns:

Id of new root node

Throws:

Exception

add

public void add(String parentNodePath,
                String nodeName,
                JsonObject nodeData)
         throws Exception

Creates a new node named nodeName at parentNodePath.

Parameters:

parentNodePath - parent node path

nodeName - name of new node

nodeData - JsonObject representation of the node to be added

Throws:

NotFoundException - if there's no node at parentNodePath

Exception - if a node named nodeName already exists at parentNodePath or if another error occurs

remove

public void remove(String nodePath)
            throws Exception

Removes the node at nodePath.

Parameters:

nodePath - node path

Throws:

Exception

setProperty

public void setProperty(String nodePath,
                        String propName,
                        String propValue)
                 throws Exception

Creates or updates the property named propName of the specified node.

if propValue == null the specified property will be removed.

Parameters:

nodePath - node path

propName - property name

propValue - property value

Throws:

NotFoundException - if there's no node at nodePath

Exception - if another error occurs

move

public void move(String srcPath,
                 String destPath)
          throws Exception

Moves the subtree rooted at srcPath to destPath.

Parameters:

srcPath - path of node to be moved

destPath - destination path

Throws:

NotFoundException - if either the node at srcPath or the parent node of destPath doesn't exist

Exception - if a node already exists at destPath, if srcPath denotes an ancestor of destPath or if another error occurs

copy

public void copy(String srcPath,
                 String destPath)
          throws Exception

Copies the subtree rooted at srcPath to destPath.

Parameters:

srcPath - path of node to be copied

destPath - destination path

Throws:

NotFoundException - if either the node at srcPath or the parent node of destPath doesn't exist

Exception - if a node already exists at destPath or if another error occurs