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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.JRVirtualizationContext

JRVirtualizationContext
public class JRVirtualizationContext implements Serializable(Code)
Context used to store data shared by virtualized objects resulted from a report fill process.
author:
   Lucian Chirita (lucianc@users.sourceforge.net)
version:
   $Id: JRVirtualizationContext.java 1254 2006-05-15 08:57:30Z lucianc $



Constructor Summary
public  JRVirtualizationContext()
     Constructs a context.

Method Summary
public  voidcacheRenderer(JRPrintImage image)
     Caches an image renderer.
public  voidcacheTemplate(JRTemplateElement template)
     Caches an element template.
public  JRRenderablegetCachedRenderer(String id)
     Retrieves a cached image renderer based on an ID.
public  JRTemplateElementgetCachedTemplate(String templateId)
     Retrieves a cached template.
public static  JRVirtualizationContextgetRegistered(JasperPrint print)
     Returns the virtualization context registered for a print object.
public  booleanhasCachedRenderer(String id)
     Determines whether a cached image renderer for a specified ID exists.
public  booleanhasCachedTemplate(String id)
     Determines whether a cached JRTemplateElement template with a specified ID exists.
public  booleanisReadOnly()
     Determines whether this context has been marked as read-only.
public static  voidregister(JRVirtualizationContext context, JasperPrint print)
     Registers a virtualization context for JasperPrint JasperPrint object.
public  voidsetReadOnly(boolean readOnly)
     Sets the read-only flag for this context.


Constructor Detail
JRVirtualizationContext
public JRVirtualizationContext()(Code)
Constructs a context.




Method Detail
cacheRenderer
public void cacheRenderer(JRPrintImage image)(Code)
Caches an image renderer.
Parameters:
  image - the image whose renderer should be cached



cacheTemplate
public void cacheTemplate(JRTemplateElement template)(Code)
Caches an element template.
Parameters:
  template - the template to cache



getCachedRenderer
public JRRenderable getCachedRenderer(String id)(Code)
Retrieves a cached image renderer based on an ID.
Parameters:
  id - the ID the cached image renderer for the ID



getCachedTemplate
public JRTemplateElement getCachedTemplate(String templateId)(Code)
Retrieves a cached template.
Parameters:
  templateId - the template ID the cached template having the given ID



getRegistered
public static JRVirtualizationContext getRegistered(JasperPrint print)(Code)
Returns the virtualization context registered for a print object.

When the engine fills a report using a virtualizer, it JRVirtualizationContext.register(JRVirtualizationContext,JasperPrint) registers the virtualization context with the generated JasperPrint JasperPrint object so that the caller would be able to retrieve the context based on the returned print object.
Parameters:
  print - a print object the virtualization context registered for the print object, or null if no contexthas been registered




hasCachedRenderer
public boolean hasCachedRenderer(String id)(Code)
Determines whether a cached image renderer for a specified ID exists.
Parameters:
  id - the ID true iff the context contains a cached renderer with the specified ID



hasCachedTemplate
public boolean hasCachedTemplate(String id)(Code)
Determines whether a cached JRTemplateElement template with a specified ID exists.
Parameters:
  id - the template ID true iff the context contains a cached template with the specified ID



isReadOnly
public boolean isReadOnly()(Code)
Determines whether this context has been marked as read-only. whether this context has been marked as read-only
See Also:   JRVirtualizationContext.setReadOnly(boolean)



register
public static void register(JRVirtualizationContext context, JasperPrint print)(Code)
Registers a virtualization context for JasperPrint JasperPrint object.
Parameters:
  context - the virtualization context
Parameters:
  print - the print object



setReadOnly
public void setReadOnly(boolean readOnly)(Code)
Sets the read-only flag for this context.

When in read-only mode, all the virtualizable objects belonging to this context are assumed final by the virtualizer and any change in a virtualizable object's data would be discarded on virtualization.
Parameters:
  readOnly - the read-only flag




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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