Package net.sf.jasperreports.engine

Interface JRQuery

All Superinterfaces:
Cloneable, JRCloneable
All Known Implementing Classes:
JRBaseQuery, JRDesignQuery
public interface JRQuery extends JRCloneable
Represents a query used for generation of report data.

Based on the query language, query executer implementations are used to retrieve the data and create a JRDataSource to be used by the filling process.

When using the default SQL connection data source, an SQL query must also be provided for JasperReports to automatically retrieve the data. For SQL queries, a very important aspect is that column names in the result set obtained from the query must match the field names defined in the report template.

Author:
Teodor Danciu (teodord@users.sourceforge.net)
See Also:

  • Method Details

    • getChunks

      JRQueryChunk[] getChunks()

    • getText

      String getText()
      Returns the query string.

    • getLanguage

      String getLanguage()
      Returns the query language.

      Based on the query language, a corresponding QueryExecuterFactory is used to create a JRQueryExecuter instance. The query executer is responsible for executing the query and creating a JRDataSource from the result.

      Returns:
      the query language