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

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

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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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  @Override
  public Object visitLiteral(final LiteralExpression literal, final EdmLiteral edmLiteral) {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject().namedStringValueRaw("nodeType", literal.getKind().toString()).separator()
          .namedStringValueRaw("type", getType(literal)).separator().namedStringValue("value", edmLiteral.getLiteral())
          .endObject();
      writer.flush();
      return writer.toString();
    } catch (final IOException e) {
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  @Override
  public Object visitMethod(final MethodExpression methodExpression, final MethodOperator method,
      final List<Object> parameters) {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject().namedStringValueRaw("nodeType", methodExpression.getKind().toString()).separator()
          .namedStringValueRaw("operator", method.toUriLiteral()).separator().namedStringValueRaw("type",
              getType(methodExpression)).separator().name("parameters").beginArray();
      boolean first = true;
      for (Object parameter : parameters) {
        if (first) {
          first = false;
        } else {
          jsonStreamWriter.separator();
        }
        jsonStreamWriter.unquotedValue(parameter.toString());
      }
      jsonStreamWriter.endArray().endObject();
      writer.flush();
      return writer.toString();
    } catch (final IOException e) {
      return null;
    }
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  @Override
  public Object visitMember(final MemberExpression memberExpression, final Object path, final Object property) {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject().namedStringValueRaw("nodeType", memberExpression.getKind().toString()).separator()
          .namedStringValueRaw("type", getType(memberExpression)).separator().name("source").unquotedValue(
              path.toString()).separator().name("path").unquotedValue(property.toString()).endObject();
      writer.flush();
      return writer.toString();
    } catch (final IOException e) {
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  @Override
  public Object visitProperty(final PropertyExpression propertyExpression, final String uriLiteral,
      final EdmTyped edmProperty) {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject().namedStringValueRaw("nodeType", propertyExpression.getKind().toString())
          .separator().namedStringValue("name", uriLiteral).separator().namedStringValueRaw("type",
              getType(propertyExpression)).endObject();
      writer.flush();
      return writer.toString();
    } catch (final IOException e) {
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  @Override
  public Object visitUnary(final UnaryExpression unaryExpression, final UnaryOperator operator, final Object operand) {
    try {
      StringWriter writer = new StringWriter();
      JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
      jsonStreamWriter.beginObject().namedStringValueRaw("nodeType", unaryExpression.getKind().toString()).separator()
          .namedStringValueRaw("operator", operator.toUriLiteral()).separator().namedStringValueRaw("type",
              getType(unaryExpression)).separator().name("operand").unquotedValue(operand.toString()).endObject();
      writer.flush();
      return writer.toString();
    } catch (final IOException e) {
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    this.properties = properties == null ? EntityProviderWriteProperties.serviceRoot(null).build() : properties;
  }

  public void append(final Writer writer, final EntityInfoAggregator entityInfo, final List<Map<String, Object>> data,
      final boolean isRootElement) throws EntityProviderException {
    JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);

    TombstoneCallback callback = getTombstoneCallback();

    try {
      jsonStreamWriter.beginObject();

      if (isRootElement) {
        jsonStreamWriter.name(FormatJson.D)
            .beginObject();
      }

      if (properties.getInlineCountType() == InlineCount.ALLPAGES) {
        final int inlineCount = properties.getInlineCount() == null ? 0 : properties.getInlineCount();
        jsonStreamWriter.namedStringValueRaw(FormatJson.COUNT, String.valueOf(inlineCount)).separator();
      }

      jsonStreamWriter.name(FormatJson.RESULTS)
          .beginArray();
      JsonEntryEntityProducer entryProducer = new JsonEntryEntityProducer(properties);
      boolean first = true;
      for (final Map<String, Object> entryData : data) {
        if (first) {
          first = false;
        } else {
          jsonStreamWriter.separator();
        }
        entryProducer.append(writer, entityInfo, entryData, false);
      }

      if (callback != null) {
        JsonDeletedEntryEntityProducer deletedEntryProducer = new JsonDeletedEntryEntityProducer(properties);
        TombstoneCallbackResult callbackResult = callback.getTombstoneCallbackResult();
        List<Map<String, Object>> deletedEntries = callbackResult.getDeletedEntriesData();
        if (deletedEntries != null) {
          deletedEntryProducer.append(writer, entityInfo, deletedEntries);
        }
      }

      jsonStreamWriter.endArray();

      appendNextLink(jsonStreamWriter);
      appendDeltaLink(callback, jsonStreamWriter);

      if (isRootElement) {
        jsonStreamWriter.endObject();
      }

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