/**
* Get the target entry for a given patch element.
*
* @param element the patch element
* @return the patch entry
* @throws PatchingException
*/
protected PatchEntry resolveForElement(final PatchElement element) throws PatchingException {
assert state == State.NEW;
final PatchElementProvider provider = element.getProvider();
final String layerName = provider.getName();
final LayerType layerType = provider.getLayerType();
final Map<String, PatchEntry> map;
if (layerType == LayerType.Layer) {
map = layers;
} else {
map = addOns;
}
PatchEntry entry = map.get(layerName);
if (entry == null) {
final InstallationManager.MutablePatchingTarget target =
modification.resolve(layerName, layerType);
if (target == null) {
throw PatchMessages.MESSAGES.noSuchLayer(layerName);
}
entry = new PatchEntry(target, element);
map.put(layerName, entry);
}
// Maintain the most recent element
entry.updateElement(element);
return entry;
}
/**
* Copy a patch element
*
* @param entry the patch entry
* @param patchId the patch id for the element
* @param modifications the element modifications
* @return the new patch element
*/
protected static PatchElement createPatchElement(
final PatchEntry entry, String patchId, final List<ContentModification> modifications) {
final PatchElement patchElement = entry.element;
final PatchElementImpl element = new PatchElementImpl(patchId);
element.setProvider(patchElement.getProvider());
// Add all the rollback actions
element.getModifications().addAll(modifications);
return element;
}
/**
* Create a patch element for the rollback patch.
*
* @param entry the entry
* @return the new patch element
*/
protected static PatchElement createRollbackElement(final PatchEntry entry) {
final PatchElement patchElement = entry.element;
final String patchId;
final Patch.PatchType patchType = patchElement.getProvider().getPatchType();
if (patchType == Patch.PatchType.CUMULATIVE) {
patchId = entry.getCumulativePatchID();
} else {
patchId = patchElement.getId();
}
return createPatchElement(entry, patchId, entry.rollbackActions);
}