Package net.sf.jasperreports.engine.data

Class JRHibernateScrollDataSource

java.lang.Object

net.sf.jasperreports.engine.data.JRHibernateAbstractDataSource

net.sf.jasperreports.engine.data.JRHibernateScrollDataSource

All Implemented Interfaces:

JRDataSource, JRRewindableDataSource

public class JRHibernateScrollDataSource
extends JRHibernateAbstractDataSource
implements JRRewindableDataSource

Hibernate data source that uses org.hibernate.Query.scroll().

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Nested Class Summary

Nested classes/interfaces inherited from class net.sf.jasperreports.engine.data.JRHibernateAbstractDataSource

JRHibernateAbstractDataSource.FieldReader, JRHibernateAbstractDataSource.IdentityFieldReader, JRHibernateAbstractDataSource.IndexFieldReader, JRHibernateAbstractDataSource.IndexPropertyFieldReader, JRHibernateAbstractDataSource.PropertyFieldReader

Field Summary

Fields inherited from class net.sf.jasperreports.engine.data.JRHibernateAbstractDataSource

EXCEPTION_MESSAGE_KEY_FIELD_ALIAS_TYPE_MISMATCH, EXCEPTION_MESSAGE_KEY_MANY_FIELDS_DETECTED, EXCEPTION_MESSAGE_KEY_NO_FIELD_ALIAS, EXCEPTION_MESSAGE_KEY_NO_FIELD_READER, EXCEPTION_MESSAGE_KEY_UNKNOWN_RETURN_ALIAS, queryExecuter

Constructor Summary

Constructors

Constructor	Description
JRHibernateScrollDataSource(JRHibernateQueryExecuter queryExecuter, boolean useFieldDescription)

Method Summary

Modifier and Type	Method	Description
void	moveFirst()	Moves back to the first element in the data source.
boolean	next()	Tries to position the cursor on the next element in the data source.

Methods inherited from class net.sf.jasperreports.engine.data.JRHibernateAbstractDataSource

assignReaders, getFieldMapping, getFieldReader, getFieldReaderSingleReturn, getFieldValue, setCurrentRowValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.sf.jasperreports.engine.JRDataSource

getFieldValue

Constructor Detail

JRHibernateScrollDataSource

public JRHibernateScrollDataSource(JRHibernateQueryExecuter queryExecuter,
                                   boolean useFieldDescription)

Method Detail

next

public boolean next()
             throws JRException

Description copied from interface: JRDataSource

Tries to position the cursor on the next element in the data source.

Specified by:

next in interface JRDataSource

Returns:

true if there is a next record, false otherwise

Throws:

JRException - if any error occurs while trying to move to the next element

moveFirst

public void moveFirst()

Description copied from interface: JRRewindableDataSource

Moves back to the first element in the data source.

Specified by:

moveFirst in interface JRRewindableDataSource