org.jfree.report
Interface ReportDataFactory
- CachingReportDataFactory, EmptyReportDataFactory, NamedStaticReportDataFactory, SimpleSQLReportDataFactory, SQLReportDataFactory, StaticReportDataFactory, TableReportDataFactory
The report data-factory is responsible for querying the data from arbitary
datasources.
void | close() - Closes the report data factory and all report data instances that have
been returned by this instance.
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ReportDataFactory | derive() - Derives a freshly initialized report data factory, which is independend
of the original data factory.
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void | open()
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ReportData | queryData(String query, DataSet parameters) - Queries a datasource.
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close
public void close()
Closes the report data factory and all report data instances that have
been returned by this instance.
derive
public ReportDataFactory derive()
Derives a freshly initialized report data factory, which is independend
of the original data factory. Opening or Closing one data factory must not
affect the other factories.
queryData
public ReportData queryData(String query,
DataSet parameters)
throws ReportDataFactoryException
Queries a datasource. The string 'query' defines the name of the query.
The Parameterset given here may contain more data than actually needed.
The dataset may change between two calls, do not assume anything!