| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.olingo.ext.proxy.commons; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.olingo.client.api.communication.ODataServerErrorException; |
| import org.apache.olingo.client.api.communication.request.ODataBatchableRequest; |
| import org.apache.olingo.client.api.communication.request.ODataRequest; |
| import org.apache.olingo.client.api.communication.request.ODataStreamedRequest; |
| import org.apache.olingo.client.api.communication.request.batch.BatchManager; |
| import org.apache.olingo.client.api.communication.request.batch.ODataBatchRequest; |
| import org.apache.olingo.client.api.communication.request.batch.ODataBatchResponseItem; |
| import org.apache.olingo.client.api.communication.request.batch.ODataChangeset; |
| import org.apache.olingo.client.api.communication.response.ODataBatchResponse; |
| import org.apache.olingo.client.api.communication.response.ODataEntityCreateResponse; |
| import org.apache.olingo.client.api.communication.response.ODataEntityUpdateResponse; |
| import org.apache.olingo.client.api.communication.response.ODataResponse; |
| import org.apache.olingo.client.core.communication.header.ODataErrorResponseChecker; |
| import org.apache.olingo.client.core.communication.request.batch.ODataChangesetResponseItem; |
| import org.apache.olingo.ext.proxy.AbstractService; |
| import org.apache.olingo.ext.proxy.api.ODataFlushException; |
| import org.apache.olingo.ext.proxy.api.ODataResponseError; |
| |
| /** |
| * {@link org.apache.olingo.ext.proxy.api.PersistenceManager} implementation using OData batch requests to implement |
| * high-level user transactions: all read-write operations will be packed in a batch request to the OData service when |
| * calling <tt>flush()</tt>. |
| */ |
| public class TransactionalPersistenceManagerImpl extends AbstractPersistenceManager { |
| |
| private static final long serialVersionUID = -3320312269235907501L; |
| |
| public TransactionalPersistenceManagerImpl(final AbstractService<?> factory) { |
| super(factory); |
| } |
| |
| /** |
| * Transactional changes commit. |
| */ |
| @Override |
| protected void doFlush(final PersistenceChanges changes, final TransactionItems items) { |
| final ODataBatchRequest request = |
| service.getClient().getBatchRequestFactory().getBatchRequest(service.getClient().getServiceRoot()); |
| ((ODataRequest) request).setAccept( |
| service.getClient().getConfiguration().getDefaultBatchAcceptFormat().toContentTypeString()); |
| |
| final BatchManager batchManager = (BatchManager) ((ODataStreamedRequest<?,?>) request).payloadManager(); |
| |
| final List<ODataRequest> requests = new ArrayList<ODataRequest>(changes.getChanges().size()); |
| final ODataChangeset changeset = batchManager.addChangeset(); |
| for (Map.Entry<ODataBatchableRequest, EntityInvocationHandler> entry : changes.getChanges().entrySet()) { |
| changeset.addRequest(entry.getKey()); |
| requests.add(entry.getKey()); |
| } |
| |
| final ODataBatchResponse response = batchManager.getResponse(); |
| |
| // This should be 202 for service version <= 3.0 and 200 for service version >= 4.0 but it seems that |
| // many service implementations are not fully compliant in this respect. |
| if (response.getStatusCode() != 202 && response.getStatusCode() != 200) { |
| throw new ODataServerErrorException(new ResponseStatusLine(response)); |
| } |
| |
| if (!items.isEmpty()) { |
| final List<ODataResponseError> errors = new ArrayList<ODataResponseError>(); |
| |
| final Iterator<ODataBatchResponseItem> batchResItor = response.getBody(); |
| if (!batchResItor.hasNext()) { |
| throw new IllegalStateException("Unexpected operation result"); |
| } |
| |
| final ODataBatchResponseItem item = batchResItor.next(); |
| if (!(item instanceof ODataChangesetResponseItem)) { |
| throw new IllegalStateException("Unexpected batch response item " + item.getClass().getSimpleName()); |
| } |
| |
| final ODataChangesetResponseItem chgres = (ODataChangesetResponseItem) item; |
| |
| int index = 0; |
| for (final Iterator<Integer> itor = items.sortedValues().iterator(); itor.hasNext(); index++) { |
| final Integer changesetItemId = itor.next(); |
| LOG.debug("Expected changeset item {}", changesetItemId); |
| |
| final ODataResponse res = chgres.next(); |
| if (res.getStatusCode() >= 400) { |
| errors.add(new ODataResponseError(ODataErrorResponseChecker.checkResponse( |
| service.getClient(), |
| new ResponseStatusLine(res), |
| res.getRawResponse(), |
| ((ODataRequest) request).getAccept()), index, requests.get(index))); |
| if (!service.getClient().getConfiguration().isContinueOnError()) { |
| throw new ODataFlushException(response.getStatusCode(), errors); |
| } |
| } |
| |
| final EntityInvocationHandler handler = items.get(changesetItemId); |
| |
| if (handler != null) { |
| if (res instanceof ODataEntityCreateResponse && (res.getStatusCode() == 201 || res |
| .getStatusCode() == 204)) { |
| if (res.getStatusCode() == 201) { |
| handler.setEntity(((ODataEntityCreateResponse<?>) res).getBody()); |
| LOG.debug("Upgrade created object '{}'", handler); |
| } else { |
| handler.applyChanges(); |
| } |
| } else if (res instanceof ODataEntityUpdateResponse && (res.getStatusCode() == 200 || res |
| .getStatusCode() == 204)) { |
| if (res.getStatusCode() == 201) { |
| handler.setEntity(((ODataEntityUpdateResponse<?>) res).getBody()); |
| LOG.debug("Upgrade updated object '{}'", handler); |
| } else { |
| handler.applyChanges(); |
| } |
| } |
| } |
| } |
| |
| if (!errors.isEmpty()) { |
| throw new ODataFlushException(response.getStatusCode(), errors); |
| } |
| } |
| response.close(); |
| } |
| } |