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

Class EqualsDiff

java.lang.Object

org.apache.jackrabbit.oak.spi.state.EqualsDiff

All Implemented Interfaces:

NodeStateDiff

public class EqualsDiff
extends java.lang.Object
implements NodeStateDiff

Helper class for comparing the equality of node states based on the content diff mechanism.

Constructor Summary

Constructors

Constructor	Description
EqualsDiff()

Method Summary

Modifier and Type	Method	Description
boolean	childNodeAdded(java.lang.String name, NodeState after)	Called for all added child nodes.
boolean	childNodeChanged(java.lang.String name, NodeState before, NodeState after)	Called for all child nodes that may contain changes between the before and after states.
boolean	childNodeDeleted(java.lang.String name, NodeState before)	Called for all deleted child nodes.
static boolean	equals(NodeState before, NodeState after)	Diffs the given node states and returns true if there are no differences.
static boolean	modified(NodeState before, NodeState after)	Diffs the given node states and returns true if there are differences within the properties or direct child nodes.
boolean	propertyAdded(PropertyState after)	Called for all added properties.
boolean	propertyChanged(PropertyState before, PropertyState after)	Called for all changed properties.
boolean	propertyDeleted(PropertyState before)	Called for all deleted properties.

Methods inherited from class java.lang.Object

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

Constructor Detail

EqualsDiff

public EqualsDiff()

Method Detail

equals

public static boolean equals(NodeState before,
                             NodeState after)

Diffs the given node states and returns true if there are no differences.

Parameters:

before - before state

after - after state

Returns:

true if the states are equal, false otherwise

modified

public static boolean modified(NodeState before,
                               NodeState after)

Diffs the given node states and returns true if there are differences within the properties or direct child nodes.

Parameters:

before - before state

after - after state

Returns:

true if there are modifications, false otherwise

propertyAdded

public boolean propertyAdded(PropertyState after)

Description copied from interface: NodeStateDiff

Called for all added properties.

Specified by:

propertyAdded in interface NodeStateDiff

Parameters:

after - property state after the change

Returns:

true to continue the comparison, false to abort. Abort will stop comparing completely, that means sibling nodes and sibling nodes of all parents are not further compared.

propertyChanged

public boolean propertyChanged(PropertyState before,
                               PropertyState after)

Description copied from interface: NodeStateDiff

Called for all changed properties. The names of the given two property states are guaranteed to be the same.

Specified by:

propertyChanged in interface NodeStateDiff

Parameters:

before - property state before the change

after - property state after the change

Returns:

true to continue the comparison, false to abort. Abort will stop comparing completely, that means sibling nodes and sibling nodes of all parents are not further compared.

propertyDeleted

public boolean propertyDeleted(PropertyState before)

Description copied from interface: NodeStateDiff

Called for all deleted properties.

Specified by:

propertyDeleted in interface NodeStateDiff

Parameters:

before - property state before the change

Returns:

true to continue the comparison, false to abort. Abort will stop comparing completely, that means sibling nodes and sibling nodes of all parents are not further compared.

childNodeAdded

public boolean childNodeAdded(java.lang.String name,
                              NodeState after)

Description copied from interface: NodeStateDiff

Called for all added child nodes.

Specified by:

childNodeAdded in interface NodeStateDiff

Parameters:

name - name of the added child node

after - child node state after the change

Returns:

true to continue the comparison, false to abort. Abort will stop comparing completely, that means sibling nodes and sibling nodes of all parents are not further compared.

childNodeChanged

public boolean childNodeChanged(java.lang.String name,
                                NodeState before,
                                NodeState after)

Description copied from interface: NodeStateDiff

Called for all child nodes that may contain changes between the before and after states. The comparison implementation is expected to make an effort to avoid calling this method on child nodes under which nothing has changed.

Specified by:

childNodeChanged in interface NodeStateDiff

Parameters:

name - name of the changed child node

before - child node state before the change

after - child node state after the change

Returns:

true to continue the comparison, false to abort. Abort will stop comparing completely, that means sibling nodes and sibling nodes of all parents are not further compared.

childNodeDeleted

public boolean childNodeDeleted(java.lang.String name,
                                NodeState before)

Description copied from interface: NodeStateDiff

Called for all deleted child nodes.

Specified by:

childNodeDeleted in interface NodeStateDiff

Parameters:

name - name of the deleted child node

before - child node state before the change

Returns:

true to continue the comparison, false to abort. Abort will stop comparing completely, that means sibling nodes and sibling nodes of all parents are not further compared.