Package org.jfree.report.data
Class CachingReportDataFactory
- java.lang.Object
-
- org.jfree.report.data.CachingReportDataFactory
-
- All Implemented Interfaces:
ReportDataFactory
public class CachingReportDataFactory extends java.lang.Object implements ReportDataFactory
Creation-Date: 19.11.2006, 13:35:45- Author:
- Thomas Morgner
-
-
Constructor Summary
Constructors Constructor Description CachingReportDataFactory(ReportDataFactory backend)
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Closes the report data factory and all report data instances that have been returned by this instance.ReportDataFactory
derive()
Derives a freshly initialized report data factory, which is independend of the original data factory.void
open()
ReportData
queryData(java.lang.String query, DataSet parameters)
Queries a datasource.
-
-
-
Constructor Detail
-
CachingReportDataFactory
public CachingReportDataFactory(ReportDataFactory backend)
-
-
Method Detail
-
open
public void open()
- Specified by:
open
in interfaceReportDataFactory
-
queryData
public ReportData queryData(java.lang.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!- Specified by:
queryData
in interfaceReportDataFactory
- Parameters:
query
-parameters
-- Returns:
- Throws:
ReportDataFactoryException
-
close
public void close()
Closes the report data factory and all report data instances that have been returned by this instance.- Specified by:
close
in interfaceReportDataFactory
-
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.- Specified by:
derive
in interfaceReportDataFactory
- Returns:
-
-