Critical Description
NPE when doing aggregate queries. I can only guess that it's because the results from a slice is null. Easy fix. I will attach a very small patch.
2008-12-03 18:14:13,348 [pool-2-thread-2] ERROR com.protrade.fanwars.base.services.FanwarsAppEventHandlerWorker - doRefreshTeamFanBasePoints: Trouble loading TeamFan: <<TeamFanId:TeamFan:8574250>>
<openjpa-2.0.0-SNAPSHOT-r422266:723088M nonfatal user error> org.apache.openjpa.persistence.ArgumentException: Failed to execute query "select count( this ), max( this.createTime ) from com.protrade.fandom.data.entities.CheerStatus this where this.teamFan = :p0 AND this.createTime > :p1 AND this.createTime <= :p2 AND this.points > 0". Check the query syntax for correctness. See nested exception for details.
at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:857)
at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:779)
at org.apache.openjpa.kernel.DelegatingQuery.execute(DelegatingQuery.java:525)
at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:257)
at org.apache.openjpa.persistence.QueryImpl.getSingleResult(QueryImpl.java:452)
at com.protrade.common.persistence.JPAUtil.execute(JPAUtil.java:181)
at com.protrade.common.persistence.JPAUtil.executeUnique(JPAUtil.java:162)
at com.protrade.common.persistence.JPADQuery.uniqueResult(JPADQuery.java:32)
at com.protrade.common.persistence.BaseRootDAOBase.runUniqueQueryNCS(BaseRootDAOBase.java:290)
at com.protrade.common.persistence.BaseDAOBase.runUniqueQueryNCS(BaseDAOBase.java:132)
at com.protrade.fandom.data.FandomCoreDAO.getCheerStatusCountLastDate(FandomCoreDAO.java:582)
at com.protrade.fandom.data.FandomCoreDAO.getTeamFanBasePointsCount(FandomCoreDAO.java:547)
at com.protrade.fanwars.base.services.FanwarsAppEventHandlerWorker.doRefreshTeamFanBasePoints(FanwarsAppEventHandlerWorker.java:795)
at com.protrade.fanwars.base.services.FanwarsAppEventHandler$11.run2(FanwarsAppEventHandler.java:270)
at com.protrade.fanwars.base.services.FanwarsAppEventHandler$FanwarsWorkerRunnable.run(FanwarsAppEventHandler.java:441)
at com.protrade.common.spring.OpenEMFilter$BindThreadRunnable.run(OpenEMFilter.java:129)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at java.util.concurrent.FutureTask.run(FutureTask.java:123)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:65)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:168)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
at org.apache.openjpa.slice.jdbc.UniqueResultObjectProvider.max(UniqueResultObjectProvider.java:126)
at org.apache.openjpa.slice.jdbc.UniqueResultObjectProvider.next(UniqueResultObjectProvider.java:98)
at org.apache.openjpa.kernel.QueryImpl.singleResult(QueryImpl.java:1292)
at org.apache.openjpa.kernel.QueryImpl.toResult(QueryImpl.java:1226)
at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:995)
at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:848)
... 23 more