org.codehaus.cargo.module.merge.strategy
Class MergeStrategy

java.lang.Object
  org.codehaus.cargo.module.merge.strategy.MergeStrategy

Direct Known Subclasses:

AbstractChoiceMergeStrategy, NodeMergeStrategy

public class MergeStrategy
extends java.lang.Object

A merge strategy is a vistor/stratey defining some way in which potential merge conflicts can be resolved in the set.

Version:

$Id $

Field Summary

static MergeStrategy	OVERWRITE Overwrite strategy adds items from the right, and overwrites duplicates.
static MergeStrategy	PRESERVE Preserve strategy only adds items from the right.

Constructor Summary

MergeStrategy()

Method Summary

int	inBoth(AbstractMergeSet set, MergePair pair) Deal with merging an element appears in both sets.
int	inLeft(AbstractMergeSet set, org.w3c.dom.Element element) Deal with merging an element that only appears in the left set.
int	inRight(AbstractMergeSet set, org.w3c.dom.Element element) Deal with merging an element that only appears in the right set.

Methods inherited from class java.lang.Object

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

Field Detail

PRESERVE

public static final MergeStrategy PRESERVE

Preserve strategy only adds items from the right.

OVERWRITE

public static final MergeStrategy OVERWRITE

Overwrite strategy adds items from the right, and overwrites duplicates.

Constructor Detail

MergeStrategy

public MergeStrategy()

Method Detail

inLeft

public int inLeft(AbstractMergeSet set,
                  org.w3c.dom.Element element)

Deal with merging an element that only appears in the left set.

Parameters:

set - in the calling MergeSet

element - in the item present only in the left set

Returns:

count of merged items

inRight

public int inRight(AbstractMergeSet set,
                   org.w3c.dom.Element element)

Deal with merging an element that only appears in the right set.

Parameters:

set - in the calling MergeSet

element - in the item present only in the left set

Returns:

count of merged items

inBoth

public int inBoth(AbstractMergeSet set,
                  MergePair pair)

Deal with merging an element appears in both sets.

Parameters:

set - in the calling MergeSet

pair - the pair of items

Returns:

count of merged items