Package org.apache.olingo.odata2.core.ep.util

Examples of org.apache.olingo.odata2.core.ep.util.CircleStreamBuffer

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    return parts;
  }

  private InputStream wrapInJson(final List<DebugInfo> parts) throws IOException {
    CircleStreamBuffer csb = new CircleStreamBuffer();
    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(csb.getOutputStream(), "UTF-8"));
    JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
    jsonStreamWriter.beginObject();
    boolean first = true;
    for (final DebugInfo part : parts) {
      if (!first) {
        jsonStreamWriter.separator();
      }
      first = false;
      jsonStreamWriter.name(part.getName().toLowerCase(Locale.ROOT));
      part.appendJson(jsonStreamWriter);
    }
    jsonStreamWriter.endObject();
    writer.flush();
    csb.closeWrite();
    return csb.getInputStream();
  }
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    @Override
    public ODataResponse readEntitySimpleProperty(final GetSimplePropertyUriInfo uriInfo, final String contentType)
        throws ODataException {
      assertTrue(getContext().isInBatchMode());

      CircleStreamBuffer buffer = new CircleStreamBuffer();
      BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(buffer.getOutputStream()));
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      try {
        jsonStreamWriter.beginObject()
            .name(FormatJson.D)
            .beginObject()
            .namedStringValue("EmployeeName", "Walter Winter")
            .endObject()
            .endObject();
        writer.flush();
        buffer.closeWrite();
      } catch (IOException e) {
        buffer.close();
        throw new RuntimeException(e);
      }

      ODataResponse oDataResponse =
          ODataResponse.entity(buffer.getInputStream()).status(HttpStatusCodes.OK).contentHeader("application/json")
              .build();
      return oDataResponse;
    }
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    return parts;
  }

  private InputStream wrapInJson(final List<DebugInfo> parts) throws IOException {
    CircleStreamBuffer csb = new CircleStreamBuffer();
    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(csb.getOutputStream(), "UTF-8"));
    JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
    jsonStreamWriter.beginObject();
    boolean first = true;
    for (final DebugInfo part : parts) {
      if (!first) {
        jsonStreamWriter.separator();
      }
      first = false;
      jsonStreamWriter.name(part.getName().toLowerCase(Locale.ROOT));
      part.appendJson(jsonStreamWriter);
    }
    jsonStreamWriter.endObject();
    writer.flush();
    csb.closeWrite();
    return csb.getInputStream();
  }
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    @Override
    public ODataResponse readEntitySimpleProperty(final GetSimplePropertyUriInfo uriInfo, final String contentType)
        throws ODataException {
      assertTrue(getContext().isInBatchMode());

      CircleStreamBuffer buffer = new CircleStreamBuffer();
      BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(buffer.getOutputStream()));
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      try {
        jsonStreamWriter.beginObject()
            .name(FormatJson.D)
            .beginObject()
            .namedStringValue("EmployeeName", "Walter Winter")
            .endObject()
            .endObject();
        writer.flush();
        buffer.closeWrite();
      } catch (IOException e) {
        buffer.close();
        throw new RuntimeException(e);
      }

      ODataResponse oDataResponse =
          ODataResponse.entity(buffer.getInputStream()).status(HttpStatusCodes.OK).contentHeader("application/json")
              .build();
      return oDataResponse;
    }
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   * @return an {@link ODataResponse} containing the serialized error message
   */
  @Override
  public ODataResponse writeErrorDocument(final HttpStatusCodes status, final String errorCode, final String message,
      final Locale locale, final String innerError) {
    CircleStreamBuffer buffer = new CircleStreamBuffer();

    try {
      BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(buffer.getOutputStream(), DEFAULT_CHARSET));
      new JsonErrorDocumentProducer().writeErrorDocument(writer, errorCode, message, locale, innerError);
      writer.flush();
      buffer.closeWrite();

      return ODataResponse.status(status)
          .entity(buffer.getInputStream())
          .header(ODataHttpHeaders.DATASERVICEVERSION, ODataServiceVersion.V10)
          .build();
    } catch (Exception e) {
      buffer.close();
      throw new ODataRuntimeException(e);
    }
  }
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   * @return resulting {@link ODataResponse} with written service document
   * @throws EntityProviderException
   */
  @Override
  public ODataResponse writeServiceDocument(final Edm edm, final String serviceRoot) throws EntityProviderException {
    CircleStreamBuffer buffer = new CircleStreamBuffer();

    try {
      BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(buffer.getOutputStream(), DEFAULT_CHARSET));
      JsonServiceDocumentProducer.writeServiceDocument(writer, edm);
      writer.flush();
      buffer.closeWrite();

      return ODataResponse.entity(buffer.getInputStream())
          .header(ODataHttpHeaders.DATASERVICEVERSION, ODataServiceVersion.V10)
          .build();
    } catch (Exception e) {
      buffer.close();
      throw new ODataRuntimeException(e);
    }
  }
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  @Override
  public ODataResponse writeEntry(final EdmEntitySet entitySet, final Map<String, Object> data,
      final EntityProviderWriteProperties properties) throws EntityProviderException {
    final EntityInfoAggregator entityInfo = EntityInfoAggregator.create(entitySet, properties.getExpandSelectTree());
    CircleStreamBuffer buffer = new CircleStreamBuffer();

    try {
      BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(buffer.getOutputStream(), DEFAULT_CHARSET));
      JsonEntryEntityProducer producer = new JsonEntryEntityProducer(properties);
      producer.append(writer, entityInfo, data, true);
      writer.flush();
      buffer.closeWrite();

      return ODataResponse.entity(buffer.getInputStream())
          .eTag(producer.getETag())
          .idLiteral(producer.getLocation())
          .build();
    } catch (EntityProviderException e) {
      buffer.close();
      throw e;
    } catch (Exception e) {
      buffer.close();
      throw new EntityProviderException(EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass()
          .getSimpleName()), e);
    }
  }
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    return writeSingleTypedElement(EntityInfoAggregator.create(edmProperty), value);
  }

  private ODataResponse writeSingleTypedElement(final EntityPropertyInfo propertyInfo, final Object value)
      throws EntityProviderException {
    CircleStreamBuffer buffer = new CircleStreamBuffer();

    try {
      OutputStream outStream = buffer.getOutputStream();
      BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outStream, DEFAULT_CHARSET));
      new JsonPropertyEntityProducer().append(writer, propertyInfo, value);
      writer.flush();
      buffer.closeWrite();

      return ODataResponse.entity(buffer.getInputStream())
          .header(ODataHttpHeaders.DATASERVICEVERSION, ODataServiceVersion.V10)
          .build();
    } catch (EntityProviderException e) {
      buffer.close();
      throw e;
    } catch (Exception e) {
      buffer.close();
      throw new EntityProviderException(EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass()
          .getSimpleName()), e);
    }
  }
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  @Override
  public ODataResponse writeFeed(final EdmEntitySet entitySet, final List<Map<String, Object>> data,
      final EntityProviderWriteProperties properties) throws EntityProviderException {
    final EntityInfoAggregator entityInfo = EntityInfoAggregator.create(entitySet, properties.getExpandSelectTree());
    CircleStreamBuffer buffer = new CircleStreamBuffer();

    try {
      BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(buffer.getOutputStream(), DEFAULT_CHARSET));
      new JsonFeedEntityProducer(properties).append(writer, entityInfo, data, true);
      writer.flush();
      buffer.closeWrite();

      return ODataResponse.entity(buffer.getInputStream()).build();
    } catch (EntityProviderException e) {
      buffer.close();
      throw e;
    } catch (Exception e) {
      buffer.close();
      throw new EntityProviderException(EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass()
          .getSimpleName()), e);
    }
  }
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  @Override
  public ODataResponse writeLink(final EdmEntitySet entitySet, final Map<String, Object> data,
      final EntityProviderWriteProperties properties) throws EntityProviderException {
    final EntityInfoAggregator entityInfo = EntityInfoAggregator.create(entitySet, properties.getExpandSelectTree());
    CircleStreamBuffer buffer = new CircleStreamBuffer();

    try {
      BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(buffer.getOutputStream(), DEFAULT_CHARSET));
      new JsonLinkEntityProducer(properties).append(writer, entityInfo, data);
      writer.flush();
      buffer.closeWrite();

      return ODataResponse.entity(buffer.getInputStream())
          .header(ODataHttpHeaders.DATASERVICEVERSION, ODataServiceVersion.V10)
          .build();
    } catch (EntityProviderException e) {
      buffer.close();
      throw e;
    } catch (Exception e) {
      buffer.close();
      throw new EntityProviderException(EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass()
          .getSimpleName()), e);
    }
  }
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