Package com.inet.report.database

Interface DataFactory

All Superinterfaces:
Serializable
All Known Implementing Classes:
BaseDataFactory, Database, JdbcData
public interface DataFactory extends Serializable
This interface is a layer between a your DBMS or any other data source and i-net Clear Reports. It compensates the differences between the different DBMS.
Since:
13.0

  • Method Details

    • getReportDataPerInstance

      boolean getReportDataPerInstance()
      Override this method only if you use subreport(s) and you set the data for the report with the getReportData or fetchData(Engine, FetchTables, DataCollector) method. For more information please refer to the sample Main_and_Subreport_Data_WithExternalResultSet.java.
      With this method you can specify whether the engine should call getReportData per subreport instance or only once for each of the subreports in the executed report. The same subreport can execute multiple time in a report with different parameters depending on its location. A subreport instance means one execution of one subreport. The method should return true if you want to set the different report data depending on the state of the report or if you want to set data depending on one or more parameter values. If you want to set data only once per sub-report, this function must return false. For example if you have a sub-report taking one prompt p0, and getReportDataPerInstance() returns true, then your sub-report will be called $n$ times whenever the value for p0 has been changed. So if your report has sub-reports and your sub-report prompts are linked with fields of the main report and you want to set the data whenever the sub-report prompts change, let getReportDataPerInstance() return true.
      Returns:
      true if the engine should invoke getReportData for every subreport instance or false otherwise.
      Since:
      13.0

    • getTableSourceData

      @Nonnull TableData getTableSourceData(@Nonnull TableSource ts) throws ReportException
      Is called from getReportData to request the data of a single TableSource if the TableSource is not a joined table or view. So it's called for procedures, commands and single tables or views.

      If you have define a column of type DatabaseMetaData.procedureColumnIn then you can get the current value with: 

       Object value = ts.getInputParameters().get(x).getValue();
      This required that getReportDataPerInstance() must return true.
      Parameters:
      ts - The current table source
      Returns:
      The resulting data, never null.
      Throws:
      ReportException - if error occurs in the API access
      Since:
      13.0

    • getTableSourceInfos

      @Nonnull Map<String,TableSourceInfo> getTableSourceInfos(@Nonnull Datasource ds, String catalog) throws ReportException
      Returns a map of objects in the database which can return table data. It can contain tables, views, stored procedures or your own objects. Keys of the returned map are table names and values are objects of type TableSourceInfo.

      If you want return parameter columns with type DatabaseMetaData.procedureColumnIn then getReportDataPerInstance() must return true and the TableSourceInfo must of type TableSourceInfo.TYPE_SPROC.

      Parameters:
      ds - datasource which describes the data
      catalog - an optional catalog
      Returns:
      a map of available objects, never null
      Throws:
      ReportException - if any error occurs
      Since:
      13.0

    • getColumns

      @Nonnull List<ColumnInfo> getColumns(@Nonnull TableSource ts) throws ReportException
      Returns the column information for a TableSource.

      If you want return parameter columns with type DatabaseMetaData.procedureColumnIn then getReportDataPerInstance() must return true and the TableSourceInfo must of type TableSourceInfo.TYPE_SPROC.

      Parameters:
      ts - the table source to get the data for
      Returns:
      A list with column information, can be empty but not null
      Throws:
      ReportException - if any error occurs
      Since:
      15.0

    • setConfiguration

      void setConfiguration(@Nonnull com.inet.report.DatabaseConfiguration configuration)
      Sets the DatabaseConfiguration for this DataFactory. this is calling from the runtime after creating.
      Parameters:
      configuration - the current configuration
      Since:
      13.0

    • getConfiguration

      com.inet.report.DatabaseConfiguration getConfiguration()
      Returns the DatabaseConfiguration of this DataFactory.
      Returns:
      the DatabaseConfiguration
      Since:
      13.0

    • fetchData

      void fetchData(@Nonnull Engine engine, @Nonnull FetchTables fetchTables, @Nonnull DataCollector collector) throws ReportException
      Fetches the part of the report data for which this data factory is responsible. A description about what tables are required to fetch is given in the specified FetchTables instance. The resulting fetched data is put to the specified DataCollector during execution of this method.

      An example implementation for this method:

      
 for( TableSource tableSource : fetchDef.getTableSources() ) {
     TableData tableData;
     
      // retrieve data for table source "tableSource"
     tableData = [...]
     
     // deliver the data to the collector:
     collector.addUnjoinedData( tableSource, tableData );
 }
      Parameters:
      engine - the engine of the report to render
      fetchTables - a model of joining table describing the data this data factory needs to deliver
      collector - the collector which receives any resulting data
      Throws:
      ReportException - on failures during data fetching
      Since:
      15.0

    • getVersion

      @Nonnull default String getVersion()
      Get the version of the factory for the UI. Only used for non JDBC data factories.
      Returns:
      the version or empty string
      Since:
      21.4

    • supportsCommands

      default boolean supportsCommands()
      If this data factory supports a TableSource of type command. If true the designer show the menu item for adding commands. The default value is false. For JDBC data factories this flag is true.
      Returns:
      the flag value
      Since:
      21.4

    • getSqlSyntax

      default com.inet.report.database.sql.SqlSyntax getSqlSyntax()
      Returns the SQL and command syntax definition instance for this data factory. It is also used for non SQL factories if it support commands to patch the prompts.
      Returns:
      the syntax definition
      Since:
      21.4