org.castor.cache.distributed
Class GigaspacesCache

java.lang.Object
  org.castor.cache.AbstractBaseCache
      org.castor.cache.distributed.AbstractDistributedCache
          org.castor.cache.distributed.GigaspacesCache

All Implemented Interfaces:

Map<Object,Object>, Cache

public final class GigaspacesCache
extends AbstractDistributedCache

Gigaspaces implementation of Castor JDO Cache.

Gigaspaces supports a wide variety of cache topologies, allowing the user to distribute and/or replicate application data as needed. This cache instance replicates this flexibility by allowing you to configure it (and thus the underlying Gigaspaces instance) as follows.

 <cache-type type="gigaspaces">
    <cacheUrl>/./</cacheURL>
    <cacheProperties>schema=cache</cacheProperties>
 </cache-type>
 

As mentioned briefly above, the main issue is the cache topology usage. Per definition, Gigaspaces caches can be started in various modes:

• Embedded - cache running as part of the application VM (/./myCache?schema=cache)
• Remote - means you need to run cache server and have relevant url at the client to connect to it (jini//*/*/myCache)
• Master local - means you need to run a cache server and have relevant url at the client to connect to it. The URL should include 'useLocalCache' as part of it (jini//*/*/myCache?useLocalCache)

Each of the above can run in replicated or partitioned mode. This means you should run several instance in one of the above mode using the relevant schema name, total_membres and id.

instance 1:
"/./myCache?schema=cache&cluster_schema=replicated&total_members=2&id=1"

instance 2:
"/./myCache?schema=cache&cluster_schema=replicated&total_members=2&id=2"

or

instance 1:
"/./myCache?schema=cache&cluster_schema=partitioned&total_members=2&id=1"

instance 2:
"/./myCache?schema=cache&cluster_schema=partitioned&total_members=2&id=2"

When running the cache in server or in embedded mode, you must have the cache schema to be used, i.e. 'schema=cache'.

For more information on cache topoligies and the use of URLs with Gigaspaces, please see here.
For more details on Gigaspaces in general, please see http://www.gigaspaces.com/.

Since:

1.0

Version:

$Revision: 5951 $ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr 2006) $

Author:

Werner Guttmann

See Also:

The Gigaspaces Home Page, The Gigaspaces Wiki

Nested Class Summary

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

Map.Entry<K,V>

Field Summary

static String	IMPLEMENTATION The classname of the implementations factory class.
static String	TYPE The type of the cache.

Fields inherited from interface org.castor.cache.Cache

DEFAULT_DEBUG, DEFAULT_NAME, DEFAULT_TYPE, PARAM_DEBUG, PARAM_NAME, PARAM_TYPE

Constructor Summary

GigaspacesCache()

Method Summary

String	getType() Indicates the type of this cache.
void	initialize(Properties params) Lyfe-cycle method to allow custom initialization of cache implementations.
void	initialize(String implementation, Properties params) Normally called to initialize CoherenceCache.

Methods inherited from class org.castor.cache.distributed.AbstractDistributedCache

clear, containsKey, containsValue, entrySet, get, getCache, isEmpty, keySet, put, putAll, remove, setCache, size, values

Methods inherited from class org.castor.cache.AbstractBaseCache

close, expire, expireAll, getName, invokeMethod, invokeStaticMethod

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Field Detail

TYPE

public static final String TYPE

The type of the cache.

See Also:

Constant Field Values

IMPLEMENTATION

public static final String IMPLEMENTATION

The classname of the implementations factory class.

See Also:

Constant Field Values

Constructor Detail

GigaspacesCache

public GigaspacesCache()

Method Detail

initialize

public void initialize(Properties params)
                throws CacheAcquireException

Lyfe-cycle method to allow custom initialization of cache implementations.

Specified by:

initialize in interface Cache

Overrides:

initialize in class AbstractBaseCache

Parameters:

params - Parameters to initialize the cache (e.g. name, capacity).

Throws:

CacheAcquireException - If cache can not be initialized.

initialize

public void initialize(String implementation,
                       Properties params)
                throws CacheAcquireException

Normally called to initialize CoherenceCache. To be able to test the method without having com.tangosol.net.CacheFactory implementation, it can also be called with a test implementations classname.

Parameters:

implementation - Cache implementation classname to initialize.

params - Parameters to initialize the cache (e.g. name, capacity).

Throws:

CacheAcquireException - If cache can not be initialized.

getType

public String getType()

Indicates the type of this cache.

Returns:

The cache type.