Search fails when copyOnRead and copyOnWrite are both set

Type: Bug
Status: Resolved
Priority: 2 Major
Resolution: Fixed
Component/s: ehcache-core
Labels:

Assignee: teck
Reporter: dhdai
Created: October 19, 2012
Votes: 0
Watchers: 6
Updated:
November 07, 2012
Resolved:
October 19, 2012

Description

When copyOnRead and copyOnWrite are both set, search by value attribute fails with ClassCastException in AtributeExtractor,

Exception in thread “main” java.lang.ClassCastException: [B cannot be cast to org.sharrissf.sample.Person at org.sharrissf.sample.EhcacheSearchPlaying$NameAttributeExtractor.attributeFor(EhcacheSearchPlaying.java:200) at org.sharrissf.sample.EhcacheSearchPlaying$NameAttributeExtractor.attributeFor(EhcacheSearchPlaying.java:206) at net.sf.ehcache.search.expression.ILike.execute(ILike.java:145) at net.sf.ehcache.search.expression.And.execute(And.java:69) at net.sf.ehcache.store.MemoryOnlyStore$BruteForceSearchManager.executeQuery(MemoryOnlyStore.java:151) at net.sf.ehcache.store.AbstractStore.executeQuery(AbstractStore.java:174) at net.sf.ehcache.store.ElementIdAssigningStore.executeQuery(ElementIdAssigningStore.java:449) at net.sf.ehcache.Cache.executeQuery(Cache.java:4015) at net.sf.ehcache.CacheQuery.execute(CacheQuery.java:181) at org.sharrissf.sample.EhcacheSearchPlaying.runTests(EhcacheSearchPlaying.java:109) at org.sharrissf.sample.EhcacheSearchPlaying.main(EhcacheSearchPlaying.java:188)

To reproduce it, just take the sample code at https://github.com/sharrissf/Ehcache-Search-Sample and set CacheConfiguration cacheConfig.copyOnRead(true).copyOnWrite(true).

It seems Element.getValue() or getObjectValue() always returns byte[] instead of the original value type.

It works fine if either copyOnRead or copyOnWrite is not set.

Comments

Ludovic Orban 2012-10-19

As a workaround, you can configure the SerializationCopyStrategy on your searchable caches:

<cache name="myCache"
       copyOnRead="true"
       copyOnWrite="true"
       ... >
    <copyStrategy class="net.sf.ehcache.store.compound.SerializationCopyStrategy"/>
    ...
</cache>

This should prevent the problem from occurring.

Tim Eck 2012-10-19

should be resolved in ehcache 2.6.2