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Thread: Problem moving from SpringHibernate3GpsDevice to HibernateGpsDevice

This question is answered. Helpful answers available: 2. Correct answers available: 1.


Permlink Replies: 10 - Pages: 1 - Last Post: Jan 1, 2012 7:30 PM Last Post By: miyao lin
matan_a

Posts: 30
Registered: 5/24/07
Problem moving from SpringHibernate3GpsDevice to HibernateGpsDevice
Posted: Feb 19, 2008 7:41 AM
 
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As SpringHibernate3GpsDevice is deprecated and we updated to 2.0 M1, we tried to move to the HibernateGpsDevice usage. Here are the two definitions in Spring (obviously we don't define both at the same time):

<!-- old -->
<bean id="hibernateGpsDevice" class="org.compass.spring.device.hibernate.dep.SpringHibernate3GpsDevice">
<property name="name" value="hibernateDevice"/>
<property name="sessionFactory" ref="sessionFactory"/>
<property name="fetchCount" value="100" />
</bean>

<!-- new -->
<bean id="hibernateGpsDevice" class="org.compass.gps.device.hibernate.HibernateGpsDevice">
<property name="name" value="hibernateDevice"/>
<property name="sessionFactory" ref="sessionFactory"/>
<property name="fetchCount" value="100" />
<property name="nativeExtractor">
<bean class="org.compass.spring.device.hibernate.SpringNativeHibernateExtractor" />
</property>
<property name="lifecycleInjector">
<bean class="org.compass.gps.device.hibernate.lifecycle.DefaultHibernateEntityLifecycleInjector">
<constructor-arg index="0" value="false" />
</bean>
</property>
</bean>

What happens though is during full indexing we get the following exception:

Caused by: org.compass.gps.device.hibernate.HibernateGpsDeviceException: {hibernateDevice}: Failed to index the database; nested exception is java.lang.NullPointerException: null
at org.compass.gps.device.hibernate.indexer.ScrollableHibernateIndexEntitiesIndexer.performIndex(ScrollableHibernateIndexEntitiesIndexer.java:151)
at org.compass.gps.device.support.parallel.ConcurrentParallelIndexExecutor$1$1.doInCompassWithoutResult(ConcurrentParallelIndexExecutor.java:105)
at org.compass.core.CompassCallbackWithoutResult.doInCompass(CompassCallbackWithoutResult.java:29)
at org.compass.core.CompassTemplate.execute(CompassTemplate.java:132)
at org.compass.gps.impl.SingleCompassGps.executeForIndex(SingleCompassGps.java:164)
at org.compass.gps.device.support.parallel.ConcurrentParallelIndexExecutor$1.call(ConcurrentParallelIndexExecutor.java:103)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
... 1 more
Caused by: java.lang.NullPointerException
at org.hibernate.loader.criteria.CriteriaQueryTranslator.getEntityName(CriteriaQueryTranslator.java:524)
at org.hibernate.loader.criteria.CriteriaQueryTranslator.getColumns(CriteriaQueryTranslator.java:434)
at org.hibernate.loader.criteria.CriteriaQueryTranslator.getColumnsUsingProjection(CriteriaQueryTranslator.java:394)
at org.hibernate.criterion.Order.toSqlString(Order.java:45)
at org.hibernate.loader.criteria.CriteriaQueryTranslator.getOrderBy(CriteriaQueryTranslator.java:348)
at org.hibernate.loader.criteria.CriteriaJoinWalker.<init>(CriteriaJoinWalker.java:82)
at org.hibernate.loader.criteria.CriteriaLoader.<init>(CriteriaLoader.java:67)
at org.hibernate.impl.SessionImpl.scroll(SessionImpl.java:1523)
at org.hibernate.impl.CriteriaImpl.scroll(CriteriaImpl.java:297)
at org.compass.gps.device.hibernate.indexer.ScrollableHibernateIndexEntitiesIndexer.performIndex(ScrollableHibernateIndexEntitiesIndexer.java:111)
... 10 more

I'm using the 2.0 M1 jar which works with the old deprecated definition. When i break at:

org.hibernate.loader.criteria.CriteriaQueryTranslator.getOrderBy(CriteriaQueryTranslator.java:348)

which is:

orderBy.append( oe.getOrder().toSqlString( oe.getCriteria(), this ) );

I see something like:

oe.toString() = "null asc".

I would upload all my cpm files but there are lots of them.

Any quick ideas on what changed between these two devices that causes this?

Thanks.

Shay Banon

Posts: 4,028
Registered: 9/6/05
Re: Problem moving from SpringHibernate3GpsDevice to HibernateGpsDevice
Posted: Feb 19, 2008 12:15 PM   in response to: matan_a in response to: matan_a
 
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Can you please inject the ScrollableHibernateIndexEntitiesIndexer and set the property: performOrderById to false? I suspect the following code in Compass:

if (performOrderById) {
    Boolean performOrder = performOrderByPerEntity.get(entityInformation.getName());
    if (performOrder == null || performOrder) {
        ClassMetadata metadata = hibernateSession.getSessionFactory().getClassMetadata(entityInformation.getName());
        criteria.addOrder(Order.asc(metadata.getIdentifierPropertyName()));
    }
}


It would be also great if you can validate my suspicion that maybe metadata.getIdentifier... returns null. In such a case, the fix is simple, and in case it is null, the order by will not be performed.
matan_a

Posts: 30
Registered: 5/24/07
Re: Problem moving from SpringHibernate3GpsDevice to HibernateGpsDevice
Posted: Feb 20, 2008 2:30 AM   in response to: Shay Banon in response to: Shay Banon
 
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Setting performOrderById to false does solve the problem.

I checked what you asked and in some mappings the metadata.getIdentifierPropertyName() in ScrollableHibernateIndexEntitiesIndexer (line 107) returns null.

Ultimately is this a problem in my mappings or is this a bug (i.e. should i keep the override to performOrderById)?

Thanks.

Edited by: matan_a on Feb 20, 2008 10:33 AM
Shay Banon

Posts: 4,028
Registered: 9/6/05
Re: Problem moving from SpringHibernate3GpsDevice to HibernateGpsDevice
Posted: Feb 20, 2008 11:37 AM   in response to: matan_a in response to: matan_a
 
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Not sure, I need to dive into Hibernate code to understand this. Anyhow, this is a simple fix in Compass where in any case, it should do nothing with null value. I will fix it for the next version.
louisvuittonbox

Posts: 411
Registered: 8/23/11
Re: Problem moving from SpringHibernate3GpsDevice to HibernateGpsDevice
Posted: Aug 23, 2011 9:37 PM   in response to: matan_a in response to: matan_a
 
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Posts: 95
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Re: Problem moving from SpringHibernate3GpsDevice to HibernateGpsDevice
Posted: Jan 1, 2012 7:03 PM   in response to: matan_a in response to: matan_a
 
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Re: Problem moving from SpringHibernate3GpsDevice to HibernateGpsDevice
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miyao lin

Posts: 97
Registered: 11/20/11
Re: Problem moving from SpringHibernate3GpsDevice to HibernateGpsDevice
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