Package net.sf.jasperreports.engine.fill

Class JRSwapFileVirtualizer

java.lang.Object

net.sf.jasperreports.engine.fill.JRAbstractLRUVirtualizer

net.sf.jasperreports.engine.fill.StoreVirtualizer

net.sf.jasperreports.engine.fill.JRSwapFileVirtualizer

All Implemented Interfaces:

JRVirtualizer

public class JRSwapFileVirtualizer
extends StoreVirtualizer

A virtualizer that uses a single swap file to serialize virtual data.

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Nested Class Summary

Nested classes/interfaces inherited from class net.sf.jasperreports.engine.fill.JRAbstractLRUVirtualizer

JRAbstractLRUVirtualizer.Cache, JRAbstractLRUVirtualizer.CacheReference

Field Summary

Fields inherited from class net.sf.jasperreports.engine.fill.JRAbstractLRUVirtualizer

lastObjectMap, lastObjectRef, lastObjectSet, pagedIn, pagedOut, serializer

Constructor Summary

Constructors

Constructor	Description
JRSwapFileVirtualizer(int maxSize, JRSwapFile swap)	Creates a virtualizer that uses a swap file.
JRSwapFileVirtualizer(int maxSize, JRSwapFile swap, boolean swapOwner)	Creates a virtualizer that uses a swap file.
JRSwapFileVirtualizer(int maxSize, JRSwapFile swap, boolean swapOwner, StreamCompression compression)	Creates a virtualizer that uses a swap file.

Method Summary

Methods inherited from class net.sf.jasperreports.engine.fill.StoreVirtualizer

cleanup, dispose, pageIn, pageOut

Methods inherited from class net.sf.jasperreports.engine.fill.JRAbstractLRUVirtualizer

clearData, contextChanged, deregisterObject, dispose, disposeAll, evict, finalize, isEvictable, isPagedOut, isPagedOutAndTouch, isReadOnly, isReadOnly, lastObject, readData, registerObject, requestData, reset, setLastObject, setReadOnly, touch, virtualizeData, writeData

Methods inherited from class java.lang.Object

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

Constructor Detail

JRSwapFileVirtualizer

public JRSwapFileVirtualizer(int maxSize,
                             JRSwapFile swap)

Creates a virtualizer that uses a swap file.

The virtualizer will be considered the owner of the swap file.

Parameters:

maxSize - the maximum size (in JRVirtualizable objects) of the paged in cache.

swap - the swap file to use for data virtualization

JRSwapFileVirtualizer

public JRSwapFileVirtualizer(int maxSize,
                             JRSwapFile swap,
                             boolean swapOwner)

Creates a virtualizer that uses a swap file.

Parameters:

maxSize - the maximum size (in JRVirtualizable objects) of the paged in cache.

swap - the swap file to use for data virtualization

swapOwner - whether the virtualizer is the owner (single user) of the swap file. If true, the virtualizer will dispose the swap file on cleanup.

JRSwapFileVirtualizer

public JRSwapFileVirtualizer(int maxSize,
                             JRSwapFile swap,
                             boolean swapOwner,
                             StreamCompression compression)

Creates a virtualizer that uses a swap file.

Parameters:

maxSize - the maximum size (in JRVirtualizable objects) of the paged in cache.

swap - the swap file to use for data virtualization

swapOwner - whether the virtualizer is the owner (single user) of the swap file. If true, the virtualizer will dispose the swap file on cleanup.

compression - stream compression to apply to serialized data