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Java Source Code / Java Documentation » Report » jasperreports 2.0.1 » net.sf.jasperreports.engine.fill

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

net.sf.jasperreports.engine.fill .JRAbstractLRUVirtualizer

All known Subclasses:   net.sf.jasperreports.engine.fill .JRSwapFileVirtualizer,  net.sf.jasperreports.engine.fill .JRGzipVirtualizer,  net.sf.jasperreports.engine.fill .JRFileVirtualizer,
JRAbstractLRUVirtualizer
abstract public class JRAbstractLRUVirtualizer implements JRVirtualizer(Code)
Abstract base for LRU and serialization based virtualizer
author:
   John Bindel
version:
   $Id: JRAbstractLRUVirtualizer.java 1797 2007-07-30 09:38:35Z teodord $

Inner Class :protected static class CacheReference extends WeakReference
Inner Class :protected class Cache
Inner Class :protected class ClassLoaderAnnotationObjectOutputStream extends ObjectOutputStream
Inner Class :protected class ClassLoaderAnnotationObjectInputStream extends ObjectInputStream

Field Summary
final protected static int CLASSLOADER_IDX_NOT_SET

final protected Map classLoadersIndexes

final protected List classLoadersList

protected JRVirtualizable lastObject

protected ReferenceMap lastObjectMap

protected ReferenceMap lastObjectSet


Constructor Summary
protected JRAbstractLRUVirtualizer(int maxSize)


Method Summary
public void clearData(JRVirtualizable o)

public void deregisterObject(JRVirtualizable o)

abstract protected void dispose(String virtualId)
     Removes the external data associated with a virtualizable object.
final protected void disposeAll()

protected void finalize()

protected static boolean isAncestorClassLoader(ClassLoader loader)

final protected synchronized boolean isPagedOut(String id)

protected synchronized boolean isPagedOutAndTouch(JRVirtualizable o, String uid)

public boolean isReadOnly()
     Determines whether the virtualizer is in read-only mode.
final protected boolean isReadOnly(JRVirtualizable o)

abstract protected void pageIn(JRVirtualizable o)
     Reads a virtualizable object's data from an external storage.
abstract protected void pageOut(JRVirtualizable o)
     Writes a virtualizable object's data to an external storage.
final protected void readData(JRVirtualizable o, InputStream in)
     Reads serialized identity and virtual data for a virtualizable object from a stream.
public synchronized void registerObject(JRVirtualizable o)

public void requestData(JRVirtualizable o)

protected synchronized void reset()

final protected void setLastObject(JRVirtualizable o)

public void setReadOnly(boolean ro)
     Sets the read only mode for the virtualizer.
public synchronized void touch(JRVirtualizable o)

public void virtualizeData(JRVirtualizable o)

final protected void writeData(JRVirtualizable o, OutputStream out)
     Writes serialized indentity and virtual data of a virtualizable object to a stream.

Field Detail
CLASSLOADER_IDX_NOT_SET
final protected static int CLASSLOADER_IDX_NOT_SET(Code)

classLoadersIndexes
final protected Map classLoadersIndexes(Code)

classLoadersList
final protected List classLoadersList(Code)

lastObject
protected JRVirtualizable lastObject(Code)

lastObjectMap
protected ReferenceMap lastObjectMap(Code)

lastObjectSet
protected ReferenceMap lastObjectSet(Code)

Constructor Detail
JRAbstractLRUVirtualizer
protected JRAbstractLRUVirtualizer(int maxSize)(Code)

Parameters:
  maxSize - the maximum size (in JRVirtualizable objects) of the paged incache.

Method Detail
clearData
public void clearData(JRVirtualizable o)(Code)

deregisterObject
public void deregisterObject(JRVirtualizable o)(Code)

dispose
abstract protected void dispose(String virtualId)(Code)
Removes the external data associated with a virtualizable object.
Parameters:
  virtualId - the ID of the virtualizable object

disposeAll
final protected void disposeAll()(Code)

finalize
protected void finalize() throws Throwable(Code)

isAncestorClassLoader
protected static boolean isAncestorClassLoader(ClassLoader loader)(Code)

isPagedOut
final protected synchronized boolean isPagedOut(String id)(Code)

isPagedOutAndTouch
protected synchronized boolean isPagedOutAndTouch(JRVirtualizable o, String uid)(Code)

isReadOnly
public boolean isReadOnly()(Code)
Determines whether the virtualizer is in read-only mode. whether the virtualizer is in read-only mode
See Also:   JRAbstractLRUVirtualizer.setReadOnly(boolean)

isReadOnly
final protected boolean isReadOnly(JRVirtualizable o)(Code)

pageIn
abstract protected void pageIn(JRVirtualizable o) throws IOException(Code)
Reads a virtualizable object's data from an external storage.
Parameters:
  o - a virtualizable object
throws:
  IOException -

pageOut
abstract protected void pageOut(JRVirtualizable o) throws IOException(Code)
Writes a virtualizable object's data to an external storage.
Parameters:
  o - a virtualizable object
throws:
  IOException -

readData
final protected void readData(JRVirtualizable o, InputStream in) throws JRRuntimeException(Code)
Reads serialized identity and virtual data for a virtualizable object from a stream.
Parameters:
  o - the virtualizable object
Parameters:
  in - the input stream
throws:
  JRRuntimeException -

registerObject
public synchronized void registerObject(JRVirtualizable o)(Code)

requestData
public void requestData(JRVirtualizable o)(Code)

reset
protected synchronized void reset()(Code)

setLastObject
final protected void setLastObject(JRVirtualizable o)(Code)

setReadOnly
public void setReadOnly(boolean ro)(Code)
Sets the read only mode for the virtualizer.
When in read-only mode, the virtualizer assumes that virtualizable objects are final and any change in a virtualizable object's data is discarded.
When the virtualizer is used for multiple virtualization contexts (in shared mode), calling this method would override the read-only flags from all the contexts and all the objects will be manipulated in read-only mode. Use JRVirtualizationContext.setReadOnly(boolean) JRVirtualizationContext.setReadOnly(boolean) to set the read-only mode for one specific context.
Parameters:
  ro - the read-only mode to set

touch
public synchronized void touch(JRVirtualizable o)(Code)

virtualizeData
public void virtualizeData(JRVirtualizable o)(Code)

writeData
final protected void writeData(JRVirtualizable o, OutputStream out) throws JRRuntimeException(Code)
Writes serialized indentity and virtual data of a virtualizable object to a stream.
Parameters:
  o - the serialized object
Parameters:
  out - the output stream
throws:
  JRRuntimeException -

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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