In the server, a report unit is the collection of elements required to retrieve data and format output. Elements of a Report Unit shows how the various elements contribute to the report output:
• The data source and query retrieve data for the report.
• The main JRXML determines the layout.
• The main JRXML file is the core of the report unit.
• The main JRXML defines other elements in one of the following ways:
• Creating definitions internally.
• Referring to existing elements elsewhere in the repository.
In this case, the main JRXML uses the repo: syntax to refer to the other elements.
• The input controls and various resources contribute to the output as needed.
For more information about the report unit, refer to the JasperReports Server Ultimate Guide.
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