com.bankframe.services.cache
Class MergedDataPacketsCache

java.lang.Object
  com.bankframe.services.cache.GenericCache
      com.bankframe.services.cache.MergedDataPacketsCache

All Implemented Interfaces:

Cache, NamedCache, PersistentCache, Map

public class MergedDataPacketsCache
extends GenericCache

The class is a specialisation of the GenericCache class. When a put() or putAll() method is invoked where the values are DataPackets then if a matching key already exists then the old DataPacket value and the new DataPacket value are merged.

Where a field in the DataPacket exists in both the old and the new version the old value of the field is overwritten with the new value of the field.

With GenericCache the old DataPacket value is simply overwritten with the new value.

To configure a cache to use this Cache implementation adjust the cache.cacheName.class setting in the BankframeResource.properties file This cache can only be used to store DataPacket data.

For example to change the txnPersister cache to use this cache implementation use the following setting: cache.txnPersister.class=com.bankframe.services.cache.MergedDataPacketsCache

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

MergedDataPacketsCache()
Default Constructor

MergedDataPacketsCache(CachePolicy policy)

MergedDataPacketsCache(Map persistentMap)

MergedDataPacketsCache(Map persistentMap, CachePolicy policy)

Method Summary

Object	put(Object key, Object value) This method updates the specified object to the data-store.
void	putAll(Map values) This method places the specified values in the cache and the data-store.

Methods inherited from class com.bankframe.services.cache.GenericCache

addCacheListener, cleanup, clear, containsKey, containsValue, enableCaching, entrySet, equals, get, getCachePolicy, getFromPersistentMap, getName, getPersistentMap, hashCode, isEmpty, keySet, remove, remove, removeAll, removeCacheListener, setCachePolicy, setName, setPersistentMap, size, toString, values

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MergedDataPacketsCache

public MergedDataPacketsCache()

Default Constructor

MergedDataPacketsCache

public MergedDataPacketsCache(CachePolicy policy)

Parameters:

policy -

MergedDataPacketsCache

public MergedDataPacketsCache(Map persistentMap)

Parameters:

persistentMap -

MergedDataPacketsCache

public MergedDataPacketsCache(Map persistentMap,
                              CachePolicy policy)

Parameters:

persistentMap -

policy -

Method Detail

put

public Object put(Object key,
                  Object value)

Description copied from class: GenericCache

This method updates the specified object to the data-store. It also updates the reference stored in the cache. If the object does not exist in the data-store it will be created.

Specified by:

put in interface Map

Overrides:

put in class GenericCache

Parameters:

key - Unique key identifying the object

value - The object

putAll

public void putAll(Map values)

Description copied from class: GenericCache

This method places the specified values in the cache and the data-store. :param values a map of values to add to the cache.

Specified by:

putAll in interface Map

Overrides:

putAll in class GenericCache