odata2-annotation-processor/annotation-processor-core/src/main/java/org/apache/olingo/odata2/annotation/processor/core/ListsProcessor.java [552:580]:
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  public ODataResponse readEntityComplexProperty(final GetComplexPropertyUriInfo uriInfo, final String contentType)
      throws ODataException {
    Object data = retrieveData(
        uriInfo.getStartEntitySet(),
        uriInfo.getKeyPredicates(),
        uriInfo.getFunctionImport(),
        mapFunctionParameters(uriInfo.getFunctionImportParameters()),
        uriInfo.getNavigationSegments());

    if (data == null) {
      throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
    }

    final List<EdmProperty> propertyPath = uriInfo.getPropertyPath();
    final EdmProperty property = propertyPath.get(propertyPath.size() - 1);
    final Object value = property.isSimple() ?
        property.getMapping() == null || property.getMapping().getMediaResourceMimeTypeKey() == null ?
            getPropertyValue(data, propertyPath) : getSimpleTypeValueMap(data, propertyPath) :
        getStructuralTypeValueMap(getPropertyValue(data, propertyPath), (EdmStructuralType) property.getType());

    ODataContext context = getContext();
    final int timingHandle = context.startRuntimeMeasurement("EntityProvider", "writeProperty");

    final ODataResponse response = EntityProvider.writeProperty(contentType, property, value);

    context.stopRuntimeMeasurement(timingHandle);

    return ODataResponse.fromResponse(response).eTag(constructETag(uriInfo.getTargetEntitySet(), data)).build();
  }
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odata2-lib/odata-ref/src/main/java/org/apache/olingo/odata2/ref/processor/ListsProcessor.java [560:589]:
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  public ODataResponse readEntityComplexProperty(final GetComplexPropertyUriInfo uriInfo, final String contentType)
      throws ODataException {
    Object data = retrieveData(
        uriInfo.getStartEntitySet(),
        uriInfo.getKeyPredicates(),
        uriInfo.getFunctionImport(),
        mapFunctionParameters(uriInfo.getFunctionImportParameters()),
        uriInfo.getNavigationSegments());

    // if (!appliesFilter(data, uriInfo.getFilter()))
    if (data == null) {
      throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
    }

    final List<EdmProperty> propertyPath = uriInfo.getPropertyPath();
    final EdmProperty property = propertyPath.get(propertyPath.size() - 1);
    final Object value = property.isSimple() ?
        property.getMapping() == null || property.getMapping().getMediaResourceMimeTypeKey() == null ?
            getPropertyValue(data, propertyPath) : getSimpleTypeValueMap(data, propertyPath) :
        getStructuralTypeValueMap(getPropertyValue(data, propertyPath), (EdmStructuralType) property.getType());

    ODataContext context = getContext();
    final int timingHandle = context.startRuntimeMeasurement("EntityProvider", "writeProperty");

    final ODataResponse response = EntityProvider.writeProperty(contentType, property, value);

    context.stopRuntimeMeasurement(timingHandle);

    return ODataResponse.fromResponse(response).eTag(constructETag(uriInfo.getTargetEntitySet(), data)).build();
  }
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