[jboss-user] [JBossCache] - EvictionPolicyConfig and CacheLoaderConfiguration

[sioux]

Hi,
I've been looking at eviction policies and have found that my CacheLoaderConfiguration config entry breaks my eviction policy. 
e.g. this unit test (taken roughly from jboss src) - 
public void testInUseEviction() throws Exception
  |    {
  |             long wakeupIntervalMillis_ = 3000;
  |            String rootStr = "/org/jboss/test/data/inuse/";
  |            Fqn fqn;
  |            for (int i = 0; i < 10; i++)
  |            {
  |               String str = rootStr + i;
  |               fqn = Fqn.fromString(str);
  |               tree.put(fqn, str, str);
  |            }
  | 
  |            Thread.sleep(wakeupIntervalMillis_ + 500);
  |            tree.getEvictionRegionManager().markNodeCurrentlyInUse(Fqn.fromString(rootStr + 5), 0);
  | 
  |            for (int i = 10; i < 15; i++)
  |            {
  |               String str = rootStr + i;
  |               fqn = Fqn.fromString(str);
  |               tree.put(fqn, str, str);
  |            }
  | 
  |            Thread.sleep(wakeupIntervalMillis_ + 500);
  | 
  |            for (int i = 0; i < 5; i++)
  |            {
  | //fails here
  |               assertNull(tree.get(Fqn.fromString(rootStr + i)));
  |            }
  | }
works with this config:
<server>
  | 
  | 	<classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar" />
  | 	<!-- ==================================================================== -->
  | 	<!-- Defines TreeCache configuration                                      -->
  | 	<!-- ==================================================================== -->
  | 
  | 	<mbean code="org.jboss.cache.TreeCache" name="jboss.cache:service=TreeCache">
  | 		<attribute name="CacheMode">LOCAL</attribute>
  | 		
  | 		
  | 		<attribute name="EvictionPolicyClass">org.jboss.cache.eviction.LRUPolicy</attribute>
  | 	
  | 		<attribute name="EvictionPolicyConfig">
  | 			<config>
  | 			<attribute name="wakeUpIntervalSeconds">5</attribute>	
  | 			<region name="/_default_">
  |                   <attribute name="maxNodes">5000</attribute>
  |                   <attribute name="timeToLiveSeconds">1000</attribute>
  |               </region>
  |               <region name="/org/jboss/data">
  |                   <attribute name="maxNodes">5000</attribute>
  |                   <attribute name="timeToLiveSeconds">1000</attribute>
  |               </region>
  |               <region name="/org/jboss/test/data">
  |                   <attribute name="maxNodes">5</attribute>
  |                   <attribute name="timeToLiveSeconds">4</attribute>
  |               </region>
  | 			</config>
  | 		</attribute>
  | 
  | 
  | 	</mbean>
  | </server>

but not when I include this section:
<attribute name="CacheLoaderConfiguration">
  | 			<config>
  | 				<passivation>false</passivation>
  | 				<preload>/</preload>
  | 				<shared>false</shared>
  | 				<cacheloader>
  | 					<class>org.jboss.cache.loader.FileCacheLoader</class>
  | 					
  | 					<properties>location=/tmp/testcachestore</properties>
  | 					
  | 					<async>false</async>
  | 					<fetchPersistentState>true</fetchPersistentState>
  | 					<ignoreModifications>false</ignoreModifications>
  | 					<purgeOnStartup>true</purgeOnStartup>
  | 				</cacheloader>
  | 				
  | 			</config>
  | 		</attribute>

Is there a way for me to use both features on a single cache? (My goal is to back up the cache to a file store but also to replace all data items over a 24 hour period for which I was considering a custom eviction policy or lazy loading following eviction).
Thanks for any suggestions or help understanding this.
Sioux

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