org.apache.jackrabbit.oak.plugins.index.counter

Class NodeCounterEditor

java.lang.Object

org.apache.jackrabbit.oak.plugins.index.counter.NodeCounterEditor

All Implemented Interfaces:

Editor

public class NodeCounterEditor
extends java.lang.Object
implements Editor

An approximate descendant node counter mechanism.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	NodeCounterEditor.NodeCounterRoot

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	COUNT_PROPERTY_NAME
static java.lang.String	DATA_NODE_NAME
static int	DEFAULT_RESOLUTION

Constructor Summary

Constructors

Constructor and Description
NodeCounterEditor(NodeCounterEditor.NodeCounterRoot root, NodeCounterEditor parent, java.lang.String name)

Method Summary

Modifier and Type	Method and Description
Editor	childNodeAdded(java.lang.String name, NodeState after) Processes an added child node.
Editor	childNodeChanged(java.lang.String name, NodeState before, NodeState after) Processes a changed child node.
Editor	childNodeDeleted(java.lang.String name, NodeState before) Processes a deleted child node.
void	enter(NodeState before, NodeState after) Called before the given before and after states are compared.
void	leave(NodeState before, NodeState after) Called after the given before and after states are compared.
void	propertyAdded(PropertyState after) Processes an added property.
void	propertyChanged(PropertyState before, PropertyState after) Processes a changed property.
void	propertyDeleted(PropertyState before) Processes a removed property.

Methods inherited from class java.lang.Object

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

Field Detail

DATA_NODE_NAME

public static final java.lang.String DATA_NODE_NAME

See Also:

Constant Field Values

COUNT_PROPERTY_NAME

public static final java.lang.String COUNT_PROPERTY_NAME

See Also:

Constant Field Values

DEFAULT_RESOLUTION

public static final int DEFAULT_RESOLUTION

See Also:

Constant Field Values

Constructor Detail

NodeCounterEditor

public NodeCounterEditor(NodeCounterEditor.NodeCounterRoot root,
                         NodeCounterEditor parent,
                         java.lang.String name)

Method Detail

enter

public void enter(NodeState before,
                  NodeState after)
           throws CommitFailedException

Description copied from interface: Editor

Called before the given before and after states are compared. The implementation can use this method to initialize any internal state needed for processing the results of the comparison. For example an implementation could look up the effective node type of the after state to know what constraints to apply to on the content changes.

Specified by:

enter in interface Editor

Parameters:

before - before state, non-existent if this node was added

after - after state, non-existent if this node was removed

Throws:

CommitFailedException - if this commit should be rejected

leave

public void leave(NodeState before,
                  NodeState after)
           throws CommitFailedException

Description copied from interface: Editor

Called after the given before and after states are compared. The implementation can use this method to post-process information collected during the content diff. For example an implementation that during the diff just recorded the fact that this node was modified in some way could then use this method to trigger an index update based on that modification flag.

Specified by:

leave in interface Editor

Parameters:

before - before state, non-existent if this node was added

after - after state, non-existent if this node was removed

Throws:

CommitFailedException - if this commit should be rejected

propertyAdded

public void propertyAdded(PropertyState after)
                   throws CommitFailedException

Description copied from interface: Editor

Processes an added property.

Specified by:

propertyAdded in interface Editor

Parameters:

after - the added property

Throws:

CommitFailedException - if processing failed

propertyChanged

public void propertyChanged(PropertyState before,
                            PropertyState after)
                     throws CommitFailedException

Description copied from interface: Editor

Processes a changed property.

Specified by:

propertyChanged in interface Editor

Parameters:

before - the original property

after - the changed property

Throws:

CommitFailedException - if processing failed

propertyDeleted

public void propertyDeleted(PropertyState before)
                     throws CommitFailedException

Description copied from interface: Editor

Processes a removed property.

Specified by:

propertyDeleted in interface Editor

Parameters:

before - the removed property

Throws:

CommitFailedException - if processing failed

childNodeChanged

public Editor childNodeChanged(java.lang.String name,
                               NodeState before,
                               NodeState after)
                        throws CommitFailedException

Description copied from interface: Editor

Processes a changed child node. This method gets called for all child nodes that may contain changes between the before and after states.

Specified by:

childNodeChanged in interface Editor

Parameters:

name - name of the changed node

before - child node before the change

after - child node after the change

Returns:

an editor for processing the subtree below the added node, or null if the subtree does not need processing

Throws:

CommitFailedException - if processing failed

childNodeAdded

public Editor childNodeAdded(java.lang.String name,
                             NodeState after)
                      throws CommitFailedException

Description copied from interface: Editor

Processes an added child node.

Specified by:

childNodeAdded in interface Editor

Parameters:

name - name of the added node

after - the added child node

Returns:

an editor for processing the subtree below the added node, or null if the subtree does not need processing

Throws:

CommitFailedException - if processing failed

childNodeDeleted

public Editor childNodeDeleted(java.lang.String name,
                               NodeState before)
                        throws CommitFailedException

Description copied from interface: Editor

Processes a deleted child node.

Specified by:

childNodeDeleted in interface Editor

Parameters:

name - name of the deleted node

before - the deleted child node

Returns:

an editor for processing the subtree below the removed node, or null if the subtree does not need processing

Throws:

CommitFailedException - if processing failed