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java.lang.Object net.sf.jasperreports.engine.fill.JRAbstractLRUVirtualizer net.sf.jasperreports.engine.fill.JRSwapFileVirtualizer
public class JRSwapFileVirtualizer
A virtualizer that uses a single swap file to serialize virtual data.
Nested Class Summary |
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Nested classes/interfaces inherited from class net.sf.jasperreports.engine.fill.JRAbstractLRUVirtualizer |
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JRAbstractLRUVirtualizer.Cache, JRAbstractLRUVirtualizer.CacheReference, JRAbstractLRUVirtualizer.ClassLoaderAnnotationObjectInputStream, JRAbstractLRUVirtualizer.ClassLoaderAnnotationObjectOutputStream |
Field Summary |
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Fields inherited from class net.sf.jasperreports.engine.fill.JRAbstractLRUVirtualizer |
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CLASSLOADER_IDX_NOT_SET, classLoadersIndexes, classLoadersList, lastObject, lastObjectMap, lastObjectSet |
Constructor Summary | |
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JRSwapFileVirtualizer(int maxSize,
JRSwapFile swap)
Creates a virtualizer that uses a swap file. |
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JRSwapFileVirtualizer(int maxSize,
JRSwapFile swap,
boolean swapOwner)
Creates a virtualizer that uses a swap file. |
Method Summary | |
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void |
cleanup()
Disposes the swap file used if this virtualizer owns it. |
protected void |
dispose(java.lang.String id)
Removes the external data associated with a virtualizable object. |
protected void |
pageIn(JRVirtualizable o)
Reads a virtualizable object's data from an external storage. |
protected void |
pageOut(JRVirtualizable o)
Writes a virtualizable object's data to an external storage. |
Methods inherited from class net.sf.jasperreports.engine.fill.JRAbstractLRUVirtualizer |
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clearData, deregisterObject, disposeAll, evict, finalize, isAncestorClassLoader, isEvictable, isPagedOut, isPagedOutAndTouch, isReadOnly, isReadOnly, readData, registerObject, requestData, reset, setLastObject, setReadOnly, touch, virtualizeData, writeData |
Methods inherited from class java.lang.Object |
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clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public JRSwapFileVirtualizer(int maxSize, JRSwapFile swap)
The virtualizer will be considered the owner of the swap file.
maxSize
- the maximum size (in JRVirtualizable objects) of the paged in cache.swap
- the swap file to use for data virtualizationpublic JRSwapFileVirtualizer(int maxSize, JRSwapFile swap, boolean swapOwner)
maxSize
- the maximum size (in JRVirtualizable objects) of the paged in cache.swap
- the swap file to use for data virtualizationswapOwner
- whether the virtualizer is the owner (single user) of the swap file.
If true
, the virtualizer will dispose the swap file on
cleanup
.Method Detail |
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protected void pageOut(JRVirtualizable o) throws java.io.IOException
JRAbstractLRUVirtualizer
pageOut
in class JRAbstractLRUVirtualizer
o
- a virtualizable object
java.io.IOException
protected void pageIn(JRVirtualizable o) throws java.io.IOException
JRAbstractLRUVirtualizer
pageIn
in class JRAbstractLRUVirtualizer
o
- a virtualizable object
java.io.IOException
protected void dispose(java.lang.String id)
JRAbstractLRUVirtualizer
dispose
in class JRAbstractLRUVirtualizer
id
- the ID of the virtualizable objectpublic void cleanup()
JRSwapFileVirtualizer(int, JRSwapFile, boolean)
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