private OComplexObject createComplexTypeLocation() {
    ArrayList<OProperty<?>> propertiesCity = new ArrayList<OProperty<?>>();
    propertiesCity.add(OProperties.string("PostalCode", ServiceOperationsProducerMock.POSTAL_CODE));
    propertiesCity.add(OProperties.string("CityName", ServiceOperationsProducerMock.CITY));

    ArrayList<OProperty<?>> propertiesLocation = new ArrayList<OProperty<?>>();
    propertiesLocation.add(
        OProperties.complex(
            "City",
            this.getMetadata()
                .findEdmComplexType(ServiceOperationsProducerMock.COMPLEY_TYPE_NAME_CITY),
            propertiesCity));
    propertiesLocation.add(OProperties.string("Country", ServiceOperationsProducerMock.COUNTRY));

    OComplexObject locationType =
        OComplexObjects.create(
            this.getMetadata()
                .findEdmComplexType(ServiceOperationsProducerMock.COMPLEY_TYPE_NAME_LOCATION),
            propertiesLocation);

    return locationType;
  }
  @Override
  public BaseResponse executeCall(String sql, List<SQLParam> parameters, EdmType returnType) {
    ConnectionImpl connection = null;
    try {
      LogManager.logDetail(LogConstants.CTX_ODATA, "Teiid-Query:", sql); // $NON-NLS-1$
      connection = getConnection();
      final CallableStatementImpl stmt = connection.prepareCall(sql);

      int i = 1;
      if (returnType != null && returnType.isSimple()) {
        stmt.registerOutParameter(
            i++,
            JDBCSQLTypeInfo.getSQLType(
                ODataTypeManager.teiidType(returnType.getFullyQualifiedTypeName())));
      }

      if (!parameters.isEmpty()) {
        for (SQLParam param : parameters) {
          stmt.setObject(i++, param.value, param.sqlType);
        }
      }

      boolean results = stmt.execute();
      if (results) {
        final ResultSet rs = stmt.getResultSet();
        OCollection.Builder resultRows =
            OCollections.newBuilder(
                (EdmComplexType) ((EdmCollectionType) returnType).getItemType());
        while (rs.next()) {
          int idx = 1;
          List<OProperty<?>> row = new ArrayList<OProperty<?>>();
          Iterator<EdmProperty> props =
              ((EdmComplexType) ((EdmCollectionType) returnType).getItemType())
                  .getProperties()
                  .iterator();
          while (props.hasNext()) {
            EdmProperty prop = props.next();
            row.add(
                buildPropery(
                    prop.getName(),
                    prop.getType(),
                    rs.getObject(idx++),
                    invalidCharacterReplacement));
          }
          OComplexObject erow =
              OComplexObjects.create(
                  (EdmComplexType) ((EdmCollectionType) returnType).getItemType(), row);
          resultRows.add(erow);
        }
        String collectionName = returnType.getFullyQualifiedTypeName();
        collectionName = collectionName.replace("(", "_"); // $NON-NLS-1$ //$NON-NLS-2$
        collectionName = collectionName.replace(")", "_"); // $NON-NLS-1$ //$NON-NLS-2$
        return Responses.collection(resultRows.build(), null, null, null, collectionName);
      }

      if (returnType != null) {
        Object result = stmt.getObject(1);
        OProperty prop =
            buildPropery("return", returnType, result, invalidCharacterReplacement); // $NON-NLS-1$
        return Responses.property(prop);
      }
      return null;
    } catch (Exception e) {
      throw new ServerErrorException(e.getMessage(), e);
    } finally {
      if (connection != null) {
        try {
          connection.close();
        } catch (SQLException e) {
        }
      }
    }
  }