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

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

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  }

  public String toJsonString() {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject()
          .name("all").unquotedValue(Boolean.toString(isAll())).separator()
          .name("properties")
          .beginArray();
      boolean first = true;
      for (EdmProperty property : properties) {
        if (first) {
          first = false;
        } else {
          jsonStreamWriter.separator();
        }
        jsonStreamWriter.stringValueRaw(property.getName());
      }
      jsonStreamWriter.endArray().separator()
          .name("links")
          .beginArray();
      first = true;
      for (Map.Entry<String, ExpandSelectTreeNodeImpl> entry : links.entrySet()) {
        if (first) {
          first = false;
        } else {
          jsonStreamWriter.separator();
        }
        final String nodeString = entry.getValue() == null ? null : entry.getValue().toJsonString();
        jsonStreamWriter.beginObject()
            .name(entry.getKey()).unquotedValue(nodeString)
            .endObject();
      }
      jsonStreamWriter.endArray()
          .endObject();
      writer.flush();
      return writer.toString();
    } catch (final IOException e) {
      throw new ODataRuntimeException("IOException: ", e);
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  public void append(final Writer writer, final EntityInfoAggregator entityInfo, final Map<String, Object> data,
      final boolean isRootElement) throws EntityProviderException {
    final EdmEntityType type = entityInfo.getEntityType();

    try {
      jsonStreamWriter = new JsonStreamWriter(writer);
      if (isRootElement) {
        jsonStreamWriter.beginObject().name(FormatJson.D);
      }

      jsonStreamWriter.beginObject();
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  }

  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();
    jsonStreamWriter.name(parts.get(0).getName().toLowerCase(Locale.ROOT));
    parts.get(0).appendJson(jsonStreamWriter);
    jsonStreamWriter.separator();
    jsonStreamWriter.name(parts.get(1).getName().toLowerCase(Locale.ROOT));
    parts.get(1).appendJson(jsonStreamWriter);
    if (parts.size() > 2) {
      jsonStreamWriter.separator();
      jsonStreamWriter.name("server")
          .beginObject();
    }
    boolean first = true;
    for (final DebugInfo part : parts.subList(2, parts.size())) {
      if (!first) {
        jsonStreamWriter.separator();
      }
      first = false;
      jsonStreamWriter.name(part.getName().toLowerCase(Locale.ROOT));
      part.appendJson(jsonStreamWriter);
    }
    if (parts.size() > 2) {
      jsonStreamWriter.endObject();
    }
    jsonStreamWriter.endObject();
    writer.flush();
    csb.closeWrite();
    return csb.getInputStream();
  }
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*/
public class JsonPropertyEntityProducer {

  public void append(final Writer writer, final EntityPropertyInfo propertyInfo, final Object value)
      throws EntityProviderException {
    JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);

    try {
      jsonStreamWriter.beginObject()
          .name(FormatJson.D)
          .beginObject();

      jsonStreamWriter.name(propertyInfo.getName());
      appendPropertyValue(jsonStreamWriter, propertyInfo.isComplex() ? (EntityComplexPropertyInfo) propertyInfo
          : propertyInfo, value);

      jsonStreamWriter.endObject()
          .endObject();
    } catch (final IOException e) {
      throw new EntityProviderException(EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass()
          .getSimpleName()), e);
    } catch (final EdmException e) {
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  }

  public String toJsonString() {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject()
          .name("all").unquotedValue(Boolean.toString(isAll())).separator()
          .name("properties")
          .beginArray();
      boolean first = true;
      for (EdmProperty property : properties) {
        if (first) {
          first = false;
        } else {
          jsonStreamWriter.separator();
        }
        jsonStreamWriter.stringValueRaw(property.getName());
      }
      jsonStreamWriter.endArray().separator()
          .name("links")
          .beginArray();
      first = true;
      for (Map.Entry<String, ExpandSelectTreeNodeImpl> entry : links.entrySet()) {
        if (first) {
          first = false;
        } else {
          jsonStreamWriter.separator();
        }
        final String nodeString = entry.getValue() == null ? null : entry.getValue().toJsonString();
        jsonStreamWriter.beginObject()
            .name(entry.getKey()).unquotedValue(nodeString)
            .endObject();
      }
      jsonStreamWriter.endArray()
          .endObject();
      writer.flush();
      return writer.toString();
    } catch (final IOException e) {
      throw new ODataRuntimeException("IOException: ", e);
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  public void append(final Writer writer, final EntityInfoAggregator entityInfo, final Map<String, Object> data,
      final boolean isRootElement) throws EntityProviderException {
    final EdmEntityType type = entityInfo.getEntityType();

    try {
      jsonStreamWriter = new JsonStreamWriter(writer);
      if (isRootElement) {
        jsonStreamWriter.beginObject().name(FormatJson.D);
      }

      jsonStreamWriter.beginObject();
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  }

  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 Object visitBinary(final BinaryExpression binaryExpression, final BinaryOperator operator,
      final Object leftSide, final Object rightSide) {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject().namedStringValueRaw("nodeType", binaryExpression.getKind().toString()).separator()
          .namedStringValue("operator", operator.toUriLiteral()).separator().namedStringValueRaw("type",
              getType(binaryExpression)).separator().name("left").unquotedValue(leftSide.toString()).separator().name(
              "right").unquotedValue(rightSide.toString()).endObject();
      writer.flush();
      return writer.toString();
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  @Override
  public Object visitOrderByExpression(final OrderByExpression orderByExpression, final String expressionString,
      final List<Object> orders) {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject().namedStringValueRaw("nodeType", "order collection").separator().name("orders")
          .beginArray();
      boolean first = true;
      for (final Object order : orders) {
        if (first) {
          first = false;
        } else {
          jsonStreamWriter.separator();
        }
        jsonStreamWriter.unquotedValue(order.toString());
      }
      jsonStreamWriter.endArray().endObject();
      writer.flush();
      return writer.toString();
    } catch (final IOException e) {
      return null;
    }
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  @Override
  public Object visitOrder(final OrderExpression orderExpression, final Object filterResult,
      final SortOrder sortOrder) {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject().namedStringValueRaw("nodeType", orderExpression.getKind().toString()).separator()
          .namedStringValueRaw("sortorder", sortOrder.toString()).separator().name("expression").unquotedValue(
              filterResult.toString()).endObject();
      writer.flush();
      return writer.toString();
    } catch (final IOException e) {
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