| All document exporting in JasperReports is done through this interface. There is an implementation of
this interface for every document format that JasperReports supports at the moment.
Export customization is realized by using export parameters. Each exporter is able to recognize and use
its own parameters, but there is a subset of predefined parameters that are common to all exporters.
Those are identified by constants in the
JRExporterParameter base class. All parameters are documented
inside the classes where they are defined.
An important aspect is the output type of each exporter. There are three types of exporters depending on
the type of output they produce:
- exporters that export to text or character based file formats (HTML, RTF, CSV, TXT, XML exporters);
- exporters that export to binary file formats (PDF and XLS exporters)
- exporters that export directly to graphic devices (Graphics2D and Java Print Service exporters)
All existing exporters fall into two categories depending on the way the content of the documents they
produce could be structured:
- there are the exporters which target document formats which support free-form page content. These
are the Grapchis2D, PDF, RTF and XML exporters.
- the second category of exporters groups those exporters that target document formats which only
support relative positioning of elements on a page or a grid-based layout. In this category we have the
HTML, XLS and CSV exporters.
author:
Teodor Danciu (teodord@users.sourceforge.net)
version:
$Id: JRExporter.java 1229 2006-04-19 10:27:35Z teodord $ |