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## net.sf.jasperreports.engine
Interface JRRewindableDataSource

All Superinterfaces:
  JRDataSource

All Known Implementing Classes:
  JRAbstractBeanDataSource, JRBeanArrayDataSource, JRBeanCollectionDataSource, JREmptyDataSource, JRHibernateIterateDataSource, JRHibernateListDataSource, JRHibernateScrollDataSource, JRJpaDataSource, JRMapArrayDataSource, JRMapCollectionDataSource, JRSortableDataSource, JRTableModelDataSource, JRXlsDataSource, JRXmlDataSource, ListOfArrayDataSource

    public interface JRRewindableDataSource

extends JRDataSource

This interface represents a data source which can go back to the first element.

Version:
  $Id: JRRewindableDataSource.java 3033 2009-08-27 11:46:22Z teodord $
Author:
  Teodor Danciu (teodord@users.sourceforge.net)

Method Summary
`void` | `moveFirst()` Moves back to the first element in the data source.

Methods inherited from interface net.sf.jasperreports.engine.JRDataSource
`getFieldValue, next`

Method Detail

### moveFirst

    void moveFirst()
                   throws JRException

  Moves back to the first element in the data source.

  Throws:
    `JRException`

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