net.proteusframework.core.cache

Class JDBCCacheLoader

java.lang.Object

net.proteusframework.core.cache.AbstractJDBCLoaderWriter

net.proteusframework.core.cache.JDBCCacheLoader

All Implemented Interfaces:

net.sf.ehcache.loader.CacheLoader

public class JDBCCacheLoader
extends AbstractJDBCLoaderWriter
implements net.sf.ehcache.loader.CacheLoader

A CacheLoader that loads data from a database table. Assumes that toString() method on the keys used in this cache provides a good database identifier. Can be used in conjunction it with JDBCCacheWriter to implement a write-through or write-behind caching use-case.

Author:

Ken Logan (klogan@venturetech.net)

Constructor Summary

Constructors

Constructor and Description
JDBCCacheLoader(DataSource source, String tableName) Create an instance

Method Summary

Modifier and Type	Method and Description
net.sf.ehcache.loader.CacheLoader	clone(net.sf.ehcache.Ehcache cache)
void	dispose()
String	getName()
net.sf.ehcache.Status	getStatus()
void	init()
Object	load(Object key)
Object	load(Object key, Object argument)
Map	loadAll(Collection keys)
Map	loadAll(Collection keys, Object argument)

Methods inherited from class net.proteusframework.core.cache.AbstractJDBCLoaderWriter

get, getTableName, put, remove

Methods inherited from class java.lang.Object

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

Constructor Detail

JDBCCacheLoader

public JDBCCacheLoader(DataSource source,
                       String tableName)

Create an instance

Parameters:

source - the data source

tableName - the name of the table to load from

Throws:

IllegalStateException - if the table is not already configured in the database

Method Detail

clone

public net.sf.ehcache.loader.CacheLoader clone(net.sf.ehcache.Ehcache cache)
                                        throws CloneNotSupportedException

Specified by:

clone in interface net.sf.ehcache.loader.CacheLoader

Throws:

CloneNotSupportedException

dispose

public void dispose()
             throws net.sf.ehcache.CacheException

Specified by:

dispose in interface net.sf.ehcache.loader.CacheLoader

Throws:

net.sf.ehcache.CacheException

getName

public String getName()

Specified by:

getName in interface net.sf.ehcache.loader.CacheLoader

getStatus

public net.sf.ehcache.Status getStatus()

Specified by:

getStatus in interface net.sf.ehcache.loader.CacheLoader

init

public void init()

Specified by:

init in interface net.sf.ehcache.loader.CacheLoader

load

@Nullable
public Object load(Object key)
                      throws net.sf.ehcache.CacheException

Specified by:

load in interface net.sf.ehcache.loader.CacheLoader

Throws:

net.sf.ehcache.CacheException

load

@Nullable
public Object load(Object key,
                             Object argument)

Specified by:

load in interface net.sf.ehcache.loader.CacheLoader

loadAll

public Map loadAll(Collection keys)

Specified by:

loadAll in interface net.sf.ehcache.loader.CacheLoader

loadAll

public Map loadAll(Collection keys,
                   Object argument)

Specified by:

loadAll in interface net.sf.ehcache.loader.CacheLoader