com.ibm.tivoli.maximo.skd.applet

Class CachedDataManager<RequestType,ReplyType>

java.lang.Object

com.ibm.tivoli.maximo.skd.applet.SerializedDataManager<RequestType,ReplyType>

com.ibm.tivoli.maximo.skd.applet.CachedDataManager<RequestType,ReplyType>

Type Parameters:

RequestType -

ReplyType -

Direct Known Subclasses:

AvailabilityDataManager, SKDModelLoader

public abstract class CachedDataManager<RequestType,ReplyType>
extends SerializedDataManager<RequestType,ReplyType>

Simple Caching Data Manager that will cache it's request/reply for a given amount of time. Subclasses simply need to extend this class and set their expiry time. Optionally classes can override the isCacheValid() method to perform extra cache validation

Author:

sls

Nested Class Summary

Nested classes/interfaces inherited from class com.ibm.tivoli.maximo.skd.applet.SerializedDataManager

SerializedDataManager.AsyncReply<ReplyType>

Field Summary

Fields inherited from class com.ibm.tivoli.maximo.skd.applet.SerializedDataManager

HTTP_ONLY_COOKIES

Constructor Summary

Constructors

Constructor and Description
CachedDataManager(long expiry)

Method Summary

Methods

Modifier and Type	Method and Description
void	clearCache() Clear all items from the cache.
ReplyType	fetchAndWait(RequestType args) Fetches the data from the server and waits for a reply.
boolean	isFetchRequired(RequestType args) The Cache Manager will return true if the data is not in the cache and should be re-fetched, or if the data is in the cache but is stale, and therefore needs to be refetched.

Methods inherited from class com.ibm.tivoli.maximo.skd.applet.SerializedDataManager

cancelCurrentRequests, convertReplyToObject, fetch, isBusy, isCompressed, isPost

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedDataManager

public CachedDataManager(long expiry)

Method Detail

isFetchRequired

public boolean isFetchRequired(RequestType args)

The Cache Manager will return true if the data is not in the cache and should be re-fetched, or if the data is in the cache but is stale, and therefore needs to be refetched.

Parameters:

data -

Returns:

fetchAndWait

public ReplyType fetchAndWait(RequestType args)
                       throws java.lang.Exception

Description copied from class: SerializedDataManager

Fetches the data from the server and waits for a reply. It is not recommended to use this method since it will cause a UI performance issue as you make the user wait for a reply from the server.

Overrides:

fetchAndWait in class SerializedDataManager<RequestType,ReplyType>

Parameters:

args - service/url parameters to be passed to createUrl()

Returns:

data instance from the server

Throws:

java.lang.Exception - if there was an error

clearCache

public void clearCache()

Clear all items from the cache.