/// <summary> /// Retrieve data from a DDB and write it to the specified <paramref name="writer"/> This is the main public method of the DataRetriever class. It is called with a populated QueryBean (containing essentially an SDMX-ML Query) and a database Connection to a "Mapping Store" database. This method is responsible for: /// <list type="bullet"> /// <item> /// Retrieving the <see cref="MappingSetEntity"/> (the class containing the performed mappings), according to the provided Dataflow ID, from the "Mapping Store". Mapping Sets are defined on a Dataflow basis. Thus, this method checks the input QueryBean for the Dataflow that data are requested and fetches the appropriate /// <see cref="MappingSetEntity"/>. If no <see cref="MappingSetEntity"/> exists, an exception (<see cref="DataRetrieverException"/>) is thrown. /// </item> /// <item> /// Calling the method generating the appropriate SQL for the dissemination database. /// </item> /// <item> /// Calling the method that executes the generated SQL and uses the /// <paramref name="writer"/> /// to write the output. /// </item> /// </list> /// <note type="note"> /// The "Data Retriever" expects exactly one Dataflow clause under the DataWhere clause, exactly one /// DataFlowBean within the DataWhereBean (which in turn resides inside the incoming QueryBean). /// </note> /// </summary> /// <exception cref="DataRetrieverException"> /// See the /// <see cref="ErrorTypes"/> /// for more details /// </exception> /// <exception cref="System.ArgumentNullException"> /// <paramref name="query"/> /// is null /// -or- /// <paramref name="writer"/> /// is null /// </exception> /// <param name="query"> /// The query bean for which data will be requested /// </param> /// <param name="writer"> /// The <see cref="ISeriesWriter"/> (e.g. Compact, Generic) writer /// </param> /// <example> /// An example using this method in C# with <see cref="CompactWriter"/> /// <code source="ReUsingExamples\DataRetriever\ReUsingDataRetriever.cs" lang="cs"> /// </code> /// An example using this method in C# with <see cref="GenericDataWriter"/> /// <code source="ReUsingExamples\DataRetriever\ReUsingDataRetrieverGeneric.cs" lang="cs"> /// </code> /// </example> public void GetData(IDataQuery dataQuery, IDsplDataWriterEngine dataWriter) { if (dataQuery == null) { throw new ArgumentNullException("query"); } if (dataWriter == null) { throw new ArgumentNullException("writer"); } try { Logger.Info(Resources.InfoDataRetrieverBBInvoked); Logger.Info(Resources.InfoOutput + dataWriter.GetType().Name); // validate input and initialize the mappingset entitiy MappingSetEntity mappingSet = this.Initialize(dataQuery); var info = new DataRetrievalInfoSeries(mappingSet, dataQuery, this._connectionStringSettings, dataWriter, this._sdmxSchemaVersion) { DefaultHeader = this._defaultHeader }; ValidateMappingSet(info); //Pietro 27/01 //this.WriteHeader(dataWriter, info); //(SRA-345) //DR the info from I*DataQuery. DimensionAtObservation to IDataWriterEngine.StartDataSet IDatasetStructureReference dsr = new DatasetStructureReferenceCore("", dataQuery.DataStructure.AsReference, null, null, dataQuery.DimensionAtObservation); IDatasetHeader header = new DatasetHeaderCore(this._defaultHeader.DatasetId, this._defaultHeader.Action, dsr); //info.MappingSet.DataSet.Description.ToString() //info.MappingSet.Dataflow.Dsd.Id.ToString() dataWriter.SetDsdOrder(dataQuery.DataStructure); dataWriter.StartDataset(info.MappingSet.DataSet.Description.ToString(), dataQuery.Dataflow, dataQuery.DataStructure, header, null); // Generate sql query this.GenerateSql(info, _sqlBuilder); this.GenerateSql(info, SeriesDataSetSqlBuilder.Instance); this.GenerateSql(info, SeriesGroupSqlBuilder.Instance); // execute sql query this.ExecuteSql(info, SeriesQueryEngineManager.Instance.GetQueryEngine(info)); // close output dataWriter.Close(); Logger.Info(Resources.InfoEndDataRetrieverBBInvoked); } catch (DataRetrieverException) { throw; } catch (SdmxException) { throw; } catch (DbException ex) { Logger.Error(ex.ToString()); throw new DataRetrieverException(ex, SdmxErrorCode.GetFromEnum(SdmxErrorCodeEnumType.InternalServerError), Resources.DataRetriever_ExecuteSqlQuery_Error_executing_generated_SQL_and_populating_SDMX_model); } catch (OutOfMemoryException) { throw; } catch (Exception ex) { Logger.Error(ex.ToString()); throw new DataRetrieverException(ex, SdmxErrorCode.GetFromEnum(SdmxErrorCodeEnumType.InternalServerError), Resources.DataRetriever_ExecuteSqlQuery_Error_during_writing_responce); } }
/// <summary> /// Retrieve data from a DDB and write it to the specified <paramref name="writer"/> This is the main public method of the DataRetriever class. It is called with a populated QueryBean (containing essentially an SDMX-ML Query) and a database Connection to a "Mapping Store" database. This method is responsible for: /// <list type="bullet"> /// <item> /// Retrieving the <see cref="MappingSetEntity"/> (the class containing the performed mappings), according to the provided Dataflow ID, from the "Mapping Store". Mapping Sets are defined on a Dataflow basis. Thus, this method checks the input QueryBean for the Dataflow that data are requested and fetches the appropriate /// <see cref="MappingSetEntity"/>. If no <see cref="MappingSetEntity"/> exists, an exception (<see cref="DataRetrieverException"/>) is thrown. /// </item> /// <item> /// Calling the method generating the appropriate SQL for the dissemination database. /// </item> /// <item> /// Calling the method that executes the generated SQL and uses the /// <paramref name="writer"/> /// to write the output. /// </item> /// </list> /// <note type="note"> /// The "Data Retriever" expects exactly one Dataflow clause under the DataWhere clause, exactly one /// DataFlowBean within the DataWhereBean (which in turn resides inside the incoming QueryBean). /// </note> /// </summary> /// <exception cref="DataRetrieverException"> /// See the /// <see cref="ErrorTypes"/> /// for more details /// </exception> /// <exception cref="System.ArgumentNullException"> /// <paramref name="query"/> /// is null /// -or- /// <paramref name="writer"/> /// is null /// </exception> /// <param name="query"> /// The query bean for which data will be requested /// </param> /// <param name="writer"> /// The Cross Sectional writer /// </param> /// <example> /// An example using this method in C# with <see cref="CrossSectionalWriter"/> /// <code source="ReUsingExamples\DataRetriever\ReUsingDataRetrieverCrossSectional.cs" lang="cs"> /// </code> /// </example> public void GetData(IDataQuery dataQuery, ICrossSectionalWriterEngine dataWriter) { if (dataQuery == null) { throw new ArgumentNullException("query"); } if (dataWriter == null) { throw new ArgumentNullException("writer"); } try { Logger.Info(Resources.InfoDataRetrieverBBInvoked); Logger.Info(Resources.InfoOutput + dataWriter.GetType().Name); // validate input and initialize the mappingset entitiy MappingSetEntity mappingSet = this.Initialize(dataQuery); var info = new DataRetrievalInfoXS(mappingSet, dataQuery, this._connectionStringSettings, dataWriter) { DefaultHeader = this._defaultHeader }; ValidateMappingSet(info); this.WriteHeader(dataWriter, info); ICrossSectionalDataStructureObject crossDsd = dataQuery.DataStructure as ICrossSectionalDataStructureObject; //(SRA-345) //DR the info from I*DataQuery. DimensionAtObservation to IDataWriterEngine.StartDataSet IDatasetStructureReference dsr = new DatasetStructureReferenceCore("", dataQuery.DataStructure.AsReference, null, null, dataQuery.DimensionAtObservation); IDatasetHeader header = new DatasetHeaderCore(this._defaultHeader.DatasetId, this._defaultHeader.Action, dsr); dataWriter.StartDataset(dataQuery.Dataflow, crossDsd, header); this.GenerateSql(info, _sqlXsBuilder); // execute sql query. this.ExecuteSql(info, CrossSectionalQueryEngineManager.Instance.GetQueryEngine(info)); // close output dataWriter.Close(); Logger.Info(Resources.InfoEndDataRetrieverBBInvoked); } catch (DataRetrieverException) { throw; } catch (SdmxException) { throw; } catch (DbException ex) { Logger.Error(ex.ToString()); throw new DataRetrieverException(ex, SdmxErrorCode.GetFromEnum(SdmxErrorCodeEnumType.InternalServerError), Resources.DataRetriever_ExecuteSqlQuery_Error_executing_generated_SQL_and_populating_SDMX_model); //ErrorTypes.DDB_CONNECTION_ERROR, //Resources.DataRetriever_ExecuteSqlQuery_Error_executing_generated_SQL_and_populating_SDMX_model, //ex); } catch (OutOfMemoryException) { throw; } catch (Exception ex) { Logger.Error(ex.ToString()); throw new DataRetrieverException(ex, SdmxErrorCode.GetFromEnum(SdmxErrorCodeEnumType.InternalServerError), Resources.DataRetriever_ExecuteSqlQuery_Error_during_writing_responce); //ErrorTypes.WRITING_OUTPUT_ERROR, //Resources.DataRetriever_ExecuteSqlQuery_Error_during_writing_responce, //ex); } }
public void TestDataWriterEngineMultiDataset(DataEnumType format) { string outfile = string.Format("{0}-multi.xml", format); DataType fromEnum = DataType.GetFromEnum(format); var objects = GetSdmxObjects(); IDataStructureObject dataStructureObject = objects.DataStructures.First(); var dataWriterManager = new DataWriterManager(); var startTime = new DateTime(2012, 1, 1); using (Stream writer = File.Create(outfile)) { using (IDataWriterEngine dataWriter = dataWriterManager.GetDataWriterEngine(new SdmxDataFormatCore(fromEnum), writer)) { var header = new HeaderImpl("IDTEST", "ZZ9"); dataWriter.WriteHeader(header); IDatasetHeader dataSetHeader = new DatasetHeaderCore( "UPDATE", DatasetAction.GetFromEnum(DatasetActionEnumType.Replace), new DatasetStructureReferenceCore(dataStructureObject.AsReference)); dataWriter.StartDataset(null, dataStructureObject, dataSetHeader); dataWriter.StartSeries(); dataWriter.WriteSeriesKeyValue("FREQ", "M"); dataWriter.WriteSeriesKeyValue("REF_AREA", "DE"); dataWriter.WriteSeriesKeyValue("ADJUSTMENT", "N"); dataWriter.WriteSeriesKeyValue("STS_INDICATOR", "PROD"); dataWriter.WriteSeriesKeyValue("STS_ACTIVITY", "NS0030"); dataWriter.WriteSeriesKeyValue("STS_INSTITUTION", "1"); dataWriter.WriteSeriesKeyValue("STS_BASE_YEAR", "2000"); var getPeriod1 = GetPeriodFunc("M", startTime); dataWriter.WriteAttributeValue("TIME_FORMAT", GetTimeFormat("M")); for (int i = 0; i < 5; i++) { string period = getPeriod1(i); dataWriter.WriteObservation(period, i.ToString(CultureInfo.InvariantCulture)); dataWriter.WriteAttributeValue("OBS_STATUS", "A"); } IDatasetHeader dataSetHeaderDelete = new DatasetHeaderCore( "DELETE", DatasetAction.GetFromEnum(DatasetActionEnumType.Delete), new DatasetStructureReferenceCore(dataStructureObject.AsReference)); dataWriter.StartDataset(null, dataStructureObject, dataSetHeaderDelete); dataWriter.StartSeries(); dataWriter.WriteSeriesKeyValue("FREQ", "M"); dataWriter.WriteSeriesKeyValue("REF_AREA", "DE"); dataWriter.WriteSeriesKeyValue("ADJUSTMENT", "N"); dataWriter.WriteSeriesKeyValue("STS_INDICATOR", "PROD"); dataWriter.WriteSeriesKeyValue("STS_ACTIVITY", "NS0030"); dataWriter.WriteSeriesKeyValue("STS_INSTITUTION", "1"); dataWriter.WriteSeriesKeyValue("STS_BASE_YEAR", "2000"); var getPeriod = GetPeriodFunc("M", new DateTime(2006, 1, 1)); for (int i = 0; i < 5; i++) { string period = getPeriod(i); dataWriter.WriteObservation(period, "NaN"); } dataWriter.Close(); } } if (fromEnum.BaseDataFormat.EnumType == BaseDataFormatEnumType.Generic) { var fileReadableDataLocation = new FileReadableDataLocation(outfile); XMLParser.ValidateXml(fileReadableDataLocation, fromEnum.SchemaVersion); } }