net.sf.jasperreports.engine.base
Class JRVirtualPrintPage

java.lang.Object
  net.sf.jasperreports.engine.base.JRBasePrintPage
      net.sf.jasperreports.engine.base.JRVirtualPrintPage

All Implemented Interfaces:

java.io.Serializable, JRPrintPage, JRVirtualizable

public class JRVirtualPrintPage
extends JRBasePrintPage
implements JRVirtualizable

A print page that can be virtualized to free heap memory.

Version:

$Id: JRVirtualPrintPage.java,v 1.8 2005/10/11 10:22:43 lucianc Exp $

Author:

John Bindel

See Also:

Serialized Form

Nested Class Summary

static interface	JRVirtualPrintPage.IdentityDataProvider Classes that want to deal with the identity data should implement this.
static class	JRVirtualPrintPage.ObjectIDPair Identity objects are those that we want to replace when we devirtualize data.

Field Summary

Fields inherited from class net.sf.jasperreports.engine.base.JRBasePrintPage

elements

Constructor Summary

JRVirtualPrintPage(JasperPrint printObject, JRVirtualizer virtualizer)
Constructs a virtualizable page.

Method Summary

void	addElement(JRPrintElement element)
void	addIdentityDataProvider(JRVirtualPrintPage.IdentityDataProvider p)
java.util.List	getElements()
java.lang.Object	getIdentityData() Used by the virtualizer to get identity data.
java.lang.String	getUID() Used by the virtualizer to identify the data for this object.
java.lang.Object	getVirtualData() Used by the virtualizer to get data.
JRVirtualizer	getVirtualizer() Gets the virtualizer.
boolean	isVirtualized()
void	removeIdentityDataProvider(JRVirtualPrintPage.IdentityDataProvider p)
void	removeVirtualData() Used by the virtualizer to remove the data from the object in memory so that it may be garbage collected.
void	setElements(java.util.List elements)
void	setIdentityData(java.lang.Object o) Used by the virtualizer to set identity data.
void	setVirtualData(java.lang.Object o) Used by the virtualizer to set data.
void	setVirtualizer(JRVirtualizer virtualizer) Sets the virtualizer.

Methods inherited from class java.lang.Object

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

Constructor Detail

JRVirtualPrintPage

public JRVirtualPrintPage(JasperPrint printObject,
                          JRVirtualizer virtualizer)

Constructs a virtualizable page.

Method Detail

getUID

public final java.lang.String getUID()

Description copied from interface: JRVirtualizable

Used by the virtualizer to identify the data for this object.

Specified by:

getUID in interface JRVirtualizable

setVirtualData

public void setVirtualData(java.lang.Object o)

Description copied from interface: JRVirtualizable

Used by the virtualizer to set data.

Specified by:

setVirtualData in interface JRVirtualizable

getVirtualData

public java.lang.Object getVirtualData()

Description copied from interface: JRVirtualizable

Used by the virtualizer to get data.

Specified by:

getVirtualData in interface JRVirtualizable

removeVirtualData

public void removeVirtualData()

Description copied from interface: JRVirtualizable

Used by the virtualizer to remove the data from the object in memory so that it may be garbage collected.

Specified by:

removeVirtualData in interface JRVirtualizable

setIdentityData

public void setIdentityData(java.lang.Object o)

Description copied from interface: JRVirtualizable

Used by the virtualizer to set identity data.

Specified by:

setIdentityData in interface JRVirtualizable

getIdentityData

public java.lang.Object getIdentityData()

Description copied from interface: JRVirtualizable

Used by the virtualizer to get identity data.

Specified by:

getIdentityData in interface JRVirtualizable

isVirtualized

public boolean isVirtualized()

setVirtualizer

public void setVirtualizer(JRVirtualizer virtualizer)

Sets the virtualizer.

getVirtualizer

public JRVirtualizer getVirtualizer()

Gets the virtualizer.

addIdentityDataProvider

public void addIdentityDataProvider(JRVirtualPrintPage.IdentityDataProvider p)

removeIdentityDataProvider

public void removeIdentityDataProvider(JRVirtualPrintPage.IdentityDataProvider p)

getElements

public java.util.List getElements()

Specified by:

getElements in interface JRPrintPage

Overrides:

getElements in class JRBasePrintPage

setElements

public void setElements(java.util.List elements)

Specified by:

setElements in interface JRPrintPage

Overrides:

setElements in class JRBasePrintPage

addElement

public void addElement(JRPrintElement element)

Specified by:

addElement in interface JRPrintPage

Overrides:

addElement in class JRBasePrintPage