/** Transactional changes commit. */
@Override
public void flush() {
final ODataBatchRequest request =
ODataBatchRequestFactory.getBatchRequest(factory.getServiceRoot());
final ODataBatchRequest.BatchStreamManager streamManager = request.execute();
final ODataChangeset changeset = streamManager.addChangeset();
final TransactionItems items = new TransactionItems();
final List<EntityLinkDesc> delayedUpdates = new ArrayList<EntityLinkDesc>();
int pos = 0;
for (AttachedEntity attachedEntity : EntityContainerFactory.getContext().entityContext()) {
final AttachedEntityStatus status = attachedEntity.getStatus();
if (((status != AttachedEntityStatus.ATTACHED && status != AttachedEntityStatus.LINKED)
|| attachedEntity.getEntity().isChanged())
&& !items.contains(attachedEntity.getEntity())) {
pos++;
pos =
processEntityContext(attachedEntity.getEntity(), pos, items, delayedUpdates, changeset);
}
}
processDelayedUpdates(delayedUpdates, pos, items, changeset);
final ODataBatchResponse response = streamManager.getResponse();
if (response.getStatusCode() != 202) {
throw new IllegalStateException("Operation failed");
}
final Iterator<ODataBatchResponseItem> iter = response.getBody();
if (!items.isEmpty()) {
if (!iter.hasNext()) {
throw new IllegalStateException("Unexpected operation result");
}
final ODataBatchResponseItem item = iter.next();
if (!(item instanceof ODataChangesetResponseItem)) {
throw new IllegalStateException(
"Unexpected batch response item " + item.getClass().getSimpleName());
}
final ODataChangesetResponseItem chgres = (ODataChangesetResponseItem) item;
for (Integer changesetItemId : items.sortedValues()) {
LOG.debug("Expected changeset item {}", changesetItemId);
final ODataResponse res = chgres.next();
if (res.getStatusCode() >= 400) {
throw new IllegalStateException("Transaction failed: " + res.getStatusMessage());
}
final EntityTypeInvocationHandler handler = items.get(changesetItemId);
if (handler != null) {
if (res instanceof ODataEntityCreateResponse) {
LOG.debug("Upgrade created object '{}'", handler);
handler.setEntity(((ODataEntityCreateResponse) res).getBody());
} else if (res instanceof ODataEntityUpdateResponse) {
LOG.debug("Upgrade updated object '{}'", handler);
handler.setEntity(((ODataEntityUpdateResponse) res).getBody());
}
}
}
}
EntityContainerFactory.getContext().detachAll();
}
