net.sf.jasperreports.engine.data

Class JRSortableDataSource

java.lang.Object

net.sf.jasperreports.engine.data.JRSortableDataSource

All Implemented Interfaces:

JRDataSource, JRRewindableDataSource

public class JRSortableDataSource
extends java.lang.Object
implements JRRewindableDataSource

Version:

$Id: JRSortableDataSource.java 3860 2010-06-03 14:38:36Z lucianc $

Author:

Teodor Danciu (teodord@users.sourceforge.net)

Field Summary

Fields

Modifier and Type	Field and Description
protected java.text.Collator	collator

Constructor Summary

Constructors

Constructor and Description
JRSortableDataSource(JRDataSource ds, JRField[] fields, JRSortField[] sortFields, java.util.Locale locale)

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	getFieldValue(JRField jrField) Gets the field value for the current position.
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.
static void	verifySortFields(JRField[] fields, JRSortField[] sortFields)

Methods inherited from class java.lang.Object

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

Field Detail

collator

protected java.text.Collator collator

Constructor Detail

JRSortableDataSource

public JRSortableDataSource(JRDataSource ds,
                    JRField[] fields,
                    JRSortField[] sortFields,
                    java.util.Locale locale)
                     throws JRException

Throws:

JRException

Method Detail

next

public boolean next()

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

getFieldValue

public java.lang.Object getFieldValue(JRField jrField)

Description copied from interface: JRDataSource

Gets the field value for the current position.

Specified by:

getFieldValue in interface JRDataSource

Returns:

an object containing the field value. The object type must be the field object type.

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

verifySortFields

public static void verifySortFields(JRField[] fields,
                    JRSortField[] sortFields)