de.laures.cewolf.storage
Class AbstractSessionStorage

java.lang.Object
  de.laures.cewolf.storage.AbstractSessionStorage

All Implemented Interfaces:

Storage, java.io.Serializable

Direct Known Subclasses:

ClusterableSessionStorage, TransientSessionStorage

public abstract class AbstractSessionStorage
extends java.lang.Object
implements Storage

Author:

glaures

See Also:

Serialized Form

Field Summary

protected static int	removed
protected static int	stored

Constructor Summary

AbstractSessionStorage()

Method Summary

boolean	contains(ChartImage cid, javax.servlet.jsp.PageContext pageContext)
protected abstract java.lang.Object	getCacheObject(ChartImage cid)
ChartImage	getChartImage(java.lang.String id, javax.servlet.http.HttpServletRequest request) Retrieves a chart image.
java.lang.String	getKey(ChartImage cid)
void	init(javax.servlet.ServletContext servletContext) Method init.
java.lang.String	removeChartImage(java.lang.String imgKey, javax.servlet.http.HttpServletRequest request) Removes the image from the storage
protected java.lang.String	removeChartImage(java.lang.String cid, javax.servlet.http.HttpSession session)
protected java.lang.String	storeChartImage(ChartImage cid, javax.servlet.http.HttpSession session)
java.lang.String	storeChartImage(ChartImage cid, javax.servlet.jsp.PageContext pageContext) Stores a chart image.

Methods inherited from class java.lang.Object

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

Field Detail

stored

protected static volatile int stored

removed

protected static volatile int removed

Constructor Detail

AbstractSessionStorage

public AbstractSessionStorage()

Method Detail

storeChartImage

public java.lang.String storeChartImage(ChartImage cid,
                                        javax.servlet.jsp.PageContext pageContext)
                                 throws CewolfException

Description copied from interface: Storage

Stores a chart image.

Specified by:

storeChartImage in interface Storage

Parameters:

cid - the image to be stored

pageContext - servletContext which might be needed

Returns:

String the storage id which is used to find the image in storage

Throws:

CewolfException

See Also:

Storage.storeChartImage(ChartImage, PageContext)

getChartImage

public ChartImage getChartImage(java.lang.String id,
                                javax.servlet.http.HttpServletRequest request)

Description copied from interface: Storage

Retrieves a chart image.

Specified by:

getChartImage in interface Storage

Parameters:

id - the id of the image

request - the request

Returns:

ChartImage the stored image instance

See Also:

Storage.getChartImage(String, javax.servlet.http.HttpServletRequest)

contains

public boolean contains(ChartImage cid,
                        javax.servlet.jsp.PageContext pageContext)

getKey

public final java.lang.String getKey(ChartImage cid)

storeChartImage

protected java.lang.String storeChartImage(ChartImage cid,
                                           javax.servlet.http.HttpSession session)
                                    throws CewolfException

Throws:

CewolfException

removeChartImage

public java.lang.String removeChartImage(java.lang.String imgKey,
                                         javax.servlet.http.HttpServletRequest request)
                                  throws CewolfException

Description copied from interface: Storage

Removes the image from the storage

Specified by:

removeChartImage in interface Storage

Parameters:

imgKey - Image id

request - Servlet request

Returns:

Image id

Throws:

CewolfException

removeChartImage

protected java.lang.String removeChartImage(java.lang.String cid,
                                            javax.servlet.http.HttpSession session)
                                     throws CewolfException

Throws:

CewolfException

getCacheObject

protected abstract java.lang.Object getCacheObject(ChartImage cid)
                                            throws CewolfException

Throws:

CewolfException

init

public void init(javax.servlet.ServletContext servletContext)
          throws CewolfException

Description copied from interface: Storage

Method init.

Specified by:

init in interface Storage

Throws:

CewolfException

See Also:

Storage.init(ServletContext)