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Date: Wed, 11 Nov 2009 21:30:51 +0000 (UTC)
From: "Fay Wang (JIRA)" <jira@apache.org>
To: dev@openjpa.apache.org
Subject: [jira] Closed: (OPENJPA-1380) Query not getting evicted from
 QueryCache
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     [ https://issues.apache.org/jira/browse/OPENJPA-1380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fay Wang closed OPENJPA-1380.
-----------------------------


> Query not getting evicted from QueryCache
> -----------------------------------------
>
>                 Key: OPENJPA-1380
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1380
>             Project: OpenJPA
>          Issue Type: Bug
>    Affects Versions: 1.2.1, 2.0.0
>            Reporter: Catalina Wei
>            Assignee: Fay Wang
>             Fix For: 2.0.0
>
>
> I'm running on OpenJPA 1.2.1
> The following query is added to the QueryCache:
> Query: org.apache.openjpa.kernel.QueryImpl@3afe3afe;
> candidate class: class com.ibm.usmi.datamodel.system.OperatingSystem;
> query: SELECT distinct
> OPERATINGSYSTEM1.OID,OPERATINGSYSTEM1.Guid,OPERATINGSYSTEM1.ObjectType,OPERATINGSYSTEM1.Name,REMOTESERVICEACCESSPOINT1.OID,REMOTESERVICEACCESSPOINT1.Guid,REMOTESERVICEACCESSPOINT1.ObjectType,REMOTESERVICEACCESSPOINT1.Name
> FROM OperatingSystem
> OPERATINGSYSTEM1,System_accessedVia_RemoteServiceAccessPoint
> SYSTEM_ACCESSEDVIA_REMOTESERVICEACCESSPOINT1,RemoteServiceAccessPoint
> REMOTESERVICEACCESSPOINT1,RelationshipInfo RELATIONSHIPINFO1 WHERE
> OPERATINGSYSTEM1.OID = SYSTEM_ACCESSEDVIA_REMOTESERVICEACCESSPOINT1.sourceId
> AND REMOTESERVICEACCESSPOINT1.OID =
> SYSTEM_ACCESSEDVIA_REMOTESERVICEACCESSPOINT1.targetId AND
> (OPERATINGSYSTEM1.Guid = ?1) AND (OPERATINGSYSTEM1.OID = ?2) AND
> ((OPERATINGSYSTEM1.BuildNumber = ?3)) AND (REMOTESERVICEACCESSPOINT1.Guid =
> ?4) AND (REMOTESERVICEACCESSPOINT1.OID = ?5) AND
> ((REMOTESERVICEACCESSPOINT1.Port = ?6)) AND RELATIONSHIPINFO1.changedDate >
> ?7 and RELATIONSHIPINFO1.sourceOID=OPERATINGSYSTEM1.OID and
> RELATIONSHIPINFO1.relationshipType = ?8 and
> RELATIONSHIPINFO1.targetOID=REMOTESERVICEACCESSPOINT1.OID
> Later on, a record in RelationshipInfo is changed, which changes what should
> be returned from this query.  I'd expect this to cause the cached query to
> get evicted from the QueryCache, but it is not.  If I get the
> QueryResultCache, and evictAll RelationshipInfo.class, it still doesn't get
> removed.  This seems to be because the AccessPath only contains
> OperatingSystem.  I'd expect this to contain all entities that this query
> deals with:
>                 {OperatingSystem,
> System_accessedVia_RemoteServiceAccessPoint, RemoteServiceAccessPoint,
> RelationshipInfo}
> But the AccessPath only seems to contain the entity of what is returned from
> the query.
> What do I need to do so this query gets evicted like I'd expect.
> This problem can be easily reproduced by the following query:
>   String jpql = "select p.name, c.name from OneOneParent p, OneOneChild c where " + 
>             "p.id = c.id and c.name = ?1";
> 	The query cache key is:
> "org.apache.openjpa.datacache.QueryKey@d11db9a4
> [
>     query:[select p.name, c.name from OneOneParent p, OneOneChild c where p.id = c.id and c.name = ?1],
>     access path:[queryCache.OneOneParent],
>     subs:true,
>     ignoreChanges:false,
>     startRange:0,
>     endRange:9223372036854775807,timeout:-1
> ]".
> This problem can be resolved if access path in QueryKey also contains queryCache.OneOneChild.

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