net.sf.jasperreports.engine.data
Class JRSortableDataSource

java.lang.Object
  extended by net.sf.jasperreports.engine.data.JRSortableDataSource
All Implemented Interfaces:
JRDataSource, JRRewindableDataSource

public class JRSortableDataSource
extends java.lang.Object
implements JRRewindableDataSource

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

Field Summary
protected  java.text.Collator collator
           
 
Constructor Summary
JRSortableDataSource(JRDataSource ds, JRField[] fields, JRSortField[] sortFields, java.util.Locale locale)
           
 
Method Summary
 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)


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