@Override
public void perform(Element originalElement, Element patchElement, Element outputParentElement)
throws AbstractXmlMergeException {
logger.fine("Merging: " + originalElement + " (original) and " + patchElement + " (patch)");
Mapper mapper = (Mapper) m_mapperFactory.getOperation(originalElement, patchElement);
if (originalElement == null) {
outputParentElement.addContent(mapper.map(patchElement));
} else if (patchElement == null) {
outputParentElement.addContent((Content) originalElement.clone());
} else {
Element workingElement =
new Element(
originalElement.getName(),
originalElement.getNamespacePrefix(),
originalElement.getNamespaceURI());
addAttributes(workingElement, originalElement);
logger.fine("Adding " + workingElement);
outputParentElement.addContent(workingElement);
doIt(workingElement, originalElement, patchElement);
}
}
/**
* Applies the action which performs the merge between two source elements.
*
* @param workingParent Output parent element
* @param originalElement Original element
* @param patchElement Patch element
* @throws AbstractXmlMergeException if an error occurred during the merge
*/
private void applyAction(Element workingParent, Element originalElement, Element patchElement)
throws AbstractXmlMergeException {
Action action = (Action) m_actionFactory.getOperation(originalElement, patchElement);
Mapper mapper = (Mapper) m_mapperFactory.getOperation(originalElement, patchElement);
// Propagate the factories to deeper merge actions
// TODO: find a way to make it cleaner
if (action instanceof MergeAction) {
MergeAction mergeAction = (MergeAction) action;
mergeAction.setActionFactory(m_actionFactory);
mergeAction.setMapperFactory(m_mapperFactory);
mergeAction.setMatcherFactory(m_matcherFactory);
}
action.perform(originalElement, mapper.map(patchElement), workingParent);
}