/**
* Check if there are changes between old and new value for this field
*
* @param Tracker_Artifact_ChangesetValue $old_value The data stored in the db
* @param array $new_value array of artifact ids
*
* @return bool true if there are differences
*/
public function hasChanges(Tracker_Artifact_ChangesetValue_ArtifactLink $old_value, $new_value)
{
return $old_value->hasChanges($new_value);
}
/**
* Return diff between 2 changeset values
*
* @param Tracker_Artifact_ChangesetValue_ArtifactLink $old_changeset_value
*
* @return Tracker_Artifact_ChangesetValue_ArtifactLinkDiff
*/
public function getArtifactLinkInfoDiff(Tracker_Artifact_ChangesetValue_ArtifactLink $old_changeset_value = null)
{
$previous = array();
if ($old_changeset_value !== null) {
$previous = $old_changeset_value->getValue();
}
return new Tracker_Artifact_ChangesetValue_ArtifactLinkDiff($previous, $this->getValue());
}