org.apache.jackrabbit.oak.kernel

Class KernelNodeBuilder

java.lang.Object

org.apache.jackrabbit.oak.plugins.memory.MemoryNodeBuilder

org.apache.jackrabbit.oak.kernel.KernelNodeBuilder

All Implemented Interfaces:

FastMove, NodeBuilder

public class KernelNodeBuilder
extends MemoryNodeBuilder
implements FastMove

This class refines move and copy operations by delegating them to the underlying store if possible.

See Also:

KernelRootBuilder

Method Summary

Methods

Modifier and Type	Method and Description
NodeState	getBaseState() Returns the original base state that this builder is modifying.
boolean	moveFrom(KernelNodeBuilder source, String newName) Move the source builder to this builder with the given new name
boolean	moveTo(NodeBuilder newParent, String newName) If newParent is a KernelNodeBuilder this implementation purges all pending changes before applying the move operation.
void	reset(NodeState newBase) Throws away all changes in this builder and resets the base to the given node state.

Methods inherited from class org.apache.jackrabbit.oak.plugins.memory.MemoryNodeBuilder

child, createBlob, exists, getBoolean, getChildNode, getChildNodeCount, getChildNodeNames, getName, getNames, getNodeState, getPath, getProperties, getProperty, getPropertyCount, getString, hasChildNode, hasProperty, isModified, isNew, isNew, isReplaced, isReplaced, remove, removeProperty, setChildNode, setChildNode, setProperty, setProperty, setProperty, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getBaseState

public NodeState getBaseState()

Description copied from interface: NodeBuilder

Returns the original base state that this builder is modifying. The return value may be non-existent (i.e. its exists method returns false) if this builder represents a new node that didn't exist in the base content tree.

Specified by:

getBaseState in interface NodeBuilder

Overrides:

getBaseState in class MemoryNodeBuilder

Returns:

base node state, possibly non-existent

reset

public void reset(NodeState newBase)

Description copied from class: MemoryNodeBuilder

Throws away all changes in this builder and resets the base to the given node state.

Overrides:

reset in class MemoryNodeBuilder

Parameters:

newBase - new base state

moveTo

public boolean moveTo(NodeBuilder newParent,
             String newName)

If newParent is a KernelNodeBuilder this implementation purges all pending changes before applying the move operation. This allows the underlying store to better optimise move operations instead of just seeing them as an added and a removed node. If newParent is not a KernelNodeBuilder the implementation falls back to the super class.

Specified by:

moveTo in interface NodeBuilder

Overrides:

moveTo in class MemoryNodeBuilder

Parameters:

newParent - builder for the new parent.

newName - name of this child at the new parent

Returns:

true on success, false otherwise

moveFrom

public boolean moveFrom(KernelNodeBuilder source,
               String newName)

Description copied from interface: FastMove

Move the source builder to this builder with the given new name

Specified by:

moveFrom in interface FastMove

Parameters:

source - source to move to this builder

newName - the new name

Returns:

true on success, false otherwise