org.apache.geode.cache30

Class TestCacheLoader<K,V>

java.lang.Object

org.apache.geode.cache30.TestCacheCallback

org.apache.geode.cache30.TestCacheLoader<K,V>

All Implemented Interfaces:

CacheCallback, CacheLoader<K,V>, Declarable

Direct Known Subclasses:

ClientServerTestCase.CacheServerCacheLoader

public abstract class TestCacheLoader<K,V>
extends TestCacheCallback
implements CacheLoader<K,V>

A CacheLoader used in testing. Users should override the "2" method.

Since:

GemFire 3.0

See Also:

TestCacheCallback.wasInvoked(), TestCacheWriter

Field Summary

Fields inherited from class org.apache.geode.cache30.TestCacheCallback

callbackError

Constructor Summary

Constructors

Constructor and Description
TestCacheLoader()

Method Summary

Modifier and Type	Method and Description
V	load(LoaderHelper<K,V> helper) Loads a value.
abstract V	load2(LoaderHelper<K,V> helper)

Methods inherited from class org.apache.geode.cache30.TestCacheCallback

close, close2, isClosed, waitForInvocation, waitForInvocation, wasInvoked

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.geode.cache.CacheCallback

close

Methods inherited from interface org.apache.geode.cache.Declarable

init, initialize

Constructor Detail

TestCacheLoader

public TestCacheLoader()

Method Detail

load

public V load(LoaderHelper<K,V> helper)
       throws CacheLoaderException

Description copied from interface: CacheLoader

Loads a value. Application writers should implement this method to customize the loading of a value. This method is called by the caching service when the requested value is not in the cache. Any exception (including an unchecked exception) thrown by this method is propagated back to and thrown by the invocation of Region.get(Object, Object) that triggered this load.

Specified by:

load in interface CacheLoader<K,V>

Parameters:

helper - a LoaderHelper object that is passed in from cache service and provides access to the key, region, argument, and netSearch.

Returns:

the value supplied for this key, or null if no value can be supplied. A local loader will always be invoked if one exists. Otherwise one remote loader is invoked. Returning null causes Region.get(Object, Object) to return null.

Throws:

CacheLoaderException

See Also:

Region.get

load2

public abstract V load2(LoaderHelper<K,V> helper)
                 throws CacheLoaderException

Throws:

CacheLoaderException