org.jfree.report.filter: public interface: RawDataSource

org.jfree.report.filter
public interface: RawDataSource [javadoc | source]

All Implemented Interfaces:
DataSource

All Known Implementing Classes:
StringFieldTemplate, DateFieldTemplate, FormatFilter, NumberFieldTemplate, DecimalFormatFilter, StringFilter, NumberFormatFilter, SimpleDateFormatFilter, DateFormatFilter

The raw data source allows direct access to the filtered raw data. It is mainly used in the table exports, where access to Number and Date objects is a requirement.

There is no enforced requirement to implement this interface, all exports will be able to work without it. But raw datasources definitly improve the quality and value of the generated output, so it is generally a good idea to implement it.

author: Thomas - Morgner

Method from org.jfree.report.filter.RawDataSource Summary:
getFormatString, getRawValue

Method from org.jfree.report.filter.RawDataSource Detail:
public FormatSpecification getFormatString(ExpressionRuntime runtime, Element element, FormatSpecification formatSpecification) Returns information about the formatstring that was used to transform a raw-value into a formatted text. Not all elements will make use of a format-string. These elements will return org.jfree.report.filter.FormatSpecification#TYPE_UNDEFINED in that case.
public Object getRawValue(ExpressionRuntime runtime, Element element) Returns the unformated raw value. Whether that raw value is useable for the export is beyond the scope of this API definition, but providing access to Number or java.util.Date objects is a good idea.

Method from org.jfree.report.filter.RawDataSource Detail:

 public FormatSpecification getFormatString(ExpressionRuntime runtime,
    Element element,
    FormatSpecification formatSpecification)Returns information about the formatstring that was used to transform a raw-value into a formatted text. Not all
elements will make use of a format-string. These elements will return org.jfree.report.filter.FormatSpecification#TYPE_UNDEFINED 
in that case.

 public Object getRawValue(ExpressionRuntime runtime,
    Element element)Returns the unformated raw value. Whether that raw value is useable for the export is beyond the scope of this API
definition, but providing access to Number  or java.util.Date  objects is a good idea.