org.deegree_impl.services.wms
Class WMSCache

java.lang.Object
  java.util.TimerTask
      org.deegree_impl.tools.Cache_Impl
          org.deegree_impl.services.wms.WMSCache

All Implemented Interfaces:

Cache, java.lang.Runnable

public class WMSCache

extends Cache_Impl

class for caching the results of GetMap and GetFeatureInfo requests. GetMap requests containing a reference to a SLD document won't be written into the cache.

Version:

$Revision: 1.8 $

Author:

Andreas Poth

Field Summary

private int	actualSize
private static WMSCache	cache
private int	maxSize

Fields inherited from class org.deegree_impl.tools.Cache_Impl

data, lastCallTime

Fields inherited from class java.util.TimerTask

Constructor Summary

private

WMSCache(int maxSize) Creates a new instance of WMSCache

Method Summary

OGCWebServiceResponse	get(WMSGetFeatureInfoRequest identifier) gets an entry from the cache.
OGCWebServiceResponse	get(WMSGetLegendGraphicRequest identifier) gets an entry from the cache.
OGCWebServiceResponse	get(WMSGetMapRequest identifier) gets an entry from the cache.
static WMSCache	getInstance(int maxSize) realizes the singelton pattern to access/create an instance of a WMSCache
void	push(OGCWebServiceRequest identifier, java.lang.Object data) pushes a new entry to the cache.

Methods inherited from class org.deegree_impl.tools.Cache_Impl

clear, deleteOldest, get, getCurrentSize, getMaxEntries, getMaxLifeTime, getUpdateInterval, push, remove, run, setMaxEntries, setMaxLifeTime, setUpdateInterval, toString

Methods inherited from class java.util.TimerTask

cancel, scheduledExecutionTime

Methods inherited from class java.lang.Object

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

Field Detail

cache

private static WMSCache cache

actualSize

private int actualSize

maxSize

private int maxSize

Constructor Detail

WMSCache

private WMSCache(int maxSize)

Creates a new instance of WMSCache

Parameters:

maxSize - maximum cache size in KB

Method Detail

getInstance

public static WMSCache getInstance(int maxSize)

realizes the singelton pattern to access/create an instance of a WMSCache

Parameters:

maxSize - maximum cache size in KB

Returns:

instance of WMSCache

get

public OGCWebServiceResponse get(WMSGetMapRequest identifier)

gets an entry from the cache. The entry that shall be returned will be identified by the passed identifier. If no entry for a passed identifier can be found within the cache the method shall return null.

Parameters:

identifier - key of a entry of the cache

get

public OGCWebServiceResponse get(WMSGetLegendGraphicRequest identifier)

gets an entry from the cache. The entry that shall be returned will be identified by the passed identifier. If no entry for a passed identifier can be found within the cache the method shall return null.

Parameters:

identifier - key of a entry of the cache

get

public OGCWebServiceResponse get(WMSGetFeatureInfoRequest identifier)

gets an entry from the cache. The entry that shall be returned will be identified by the passed identifier. If no entry for a passed identifier can be found within the cache the method shall return null.

Parameters:

identifier - key of a entry of the cache

push

public void push(OGCWebServiceRequest identifier,
                 java.lang.Object data)

pushes a new entry to the cache. Each entry is marked by an unique identifier. The passed data object shall be a Image or a String.

Parameters:

identifier - identifier key of a entry of the cache

data - data object to be stored in the cache