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| <h2 id="batch-request-construction">Batch Request construction<a class="headerlink" href="#batch-request-construction" title="Permalink">¶</a></h2> |
| <p><strong>Query Request construction</strong></p> |
| <p>A BatchQueryPart is a representation of a single retrieve request. You can use the following methods in order to fill out a request:</p> |
| <ul> |
| <li>method(String)</li> |
| <li>uri(String)</li> |
| <li>contentId(String)</li> |
| <li>headers(List<string>)</string></li> |
| </ul> |
| <pre><code> |
| BatchQueryPart request = BatchQueryPart.method("GET").uri("$metadata").build(); |
| </code></pre> |
| <p><strong>Note:</strong> The valid method value is GET.</p> |
| <p><strong>ChangeSet construction</strong> |
| A BatchChangeSetPart is a representation of a single change request. You can use the following methods in order to fill out a change request:</p> |
| <ul> |
| <li>method(String)</li> |
| <li>uri(String)</li> |
| <li>headers(List<string>)</string></li> |
| <li>contentId(String)</li> |
| <li>body(String)</li> |
| </ul> |
| <pre><code>Map<string, string=""> changeSetHeaders = new HashMap<string, string="">(); |
| changeSetHeaders.put("content-type", "application/json;odata=verbose"); |
| BatchChangeSetPart changeRequest = BatchChangeSetPart.method("PUT") |
| .uri("Employees('2')/EmployeeName") |
| .headers(changeSetHeaders) |
| .body("{\"EmployeeName\":\"Frederic Fall MODIFIED\"}") |
| .build(); |
| ... |
| </string,></string,></code></pre> |
| <p><strong>Note:</strong> The valid method values are POST, PUT, DELETE or MERGE.</p> |
| <p>The change request has to become a part of a changeSet. For that you need to create a changeSet object and to attach the change request to this object.</p> |
| <pre><code>... |
| BatchChangeSet changeSet = BatchChangeSet.newBuilder().build(); |
| changeSet.add(changeRequest); |
| </code></pre> |
| <p><strong>Batch request payload construction</strong> |
| After you collected all created parts, you can call the method writeBatchRequestBody(..) provided by EntityProvider</p> |
| <pre><code>... |
| List<BatchPart> batchParts = new ArrayList<BatchPart>(); |
| batchParts.add(request); |
| batchParts.add(changeSet); |
| |
| InputStream payload = EntityProvider.writeBatchRequest(batchParts, BOUNDARY); |
| </code></pre> |
| <p>The second parameter BOUNDARY is necessary information for the construction of the batch request payload. It is the value of the boundary parameter, that is set in Content-Type header of the batch request.</p> |
| <p><strong>Batch Response interpretation</strong> |
| Interpretation of the batch response payload |
| You receive a list of single response by calling EntityProvider.parseBatchResponse(..)</p> |
| <pre><code>List<BatchSingleResponse> responses = EntityProvider.parseBatchResponse(responseBody, contentType); |
| for (BatchSingleResponse response : responses) { |
| response.getStatusCode()); |
| response.getStatusInfo()); |
| response.getHeader(HttpHeaders.CONTENT_TYPE); |
| response.getBody(); |
| response.getContentId(); |
| } |
| </code></pre> |
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