Re: ERXBatchingDisplayGroup and batch size
Re: ERXBatchingDisplayGroup and batch size
- Subject: Re: ERXBatchingDisplayGroup and batch size
- From: Chuck Hill <email@hidden>
- Date: Thu, 18 Oct 2012 15:14:54 -0700
What is the SQL that is causing that exception?
Chuck
On 2012-10-18, at 3:04 PM, Louis Demers wrote:
> Hi,
>
> Converted some pages from WODisplayGroup to use ERXBatchingDisplayGroup. Formerly, one could enter a batchsize of 0 to get all the objects. Now when i do that, or a very large number, I get an unrecoverable exception that forces me to restart the applications and the database (PostgreSQL). If i first put a small number, then I can ask any number including 0 and it works...
>
>
> The exeption I get is Oct 18 17:58:11 INFO er.transaction.adaptor.Exceptions - Database Exception occured: This connection has been closed.at org.postgresql.jdbc2.AbstractJdbc2Connection.checkClosed(AbstractJdbc2Connection.java:712)
> at org.postgresql.jdbc2.AbstractJdbc2Connection.rollback(AbstractJdbc2Connection.java:729)
> at com.webobjects.jdbcadaptor.JDBCContext.rollbackTransaction(JDBCContext.java:488)
> at com.webobjects.jdbcadaptor.JDBCChannel._evaluateExpression(JDBCChannel.java:340)
> at com.webobjects.jdbcadaptor.JDBCChannel.evaluateExpression(JDBCChannel.java:296)
> at com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:220)
> at com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)
> at com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
> at com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)
> at com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
> at com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
> at com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
> at er.extensions.eof.ERXEC.objectsWithFetchSpecification(ERXEC.java:1306)
> at com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4444)
> at er.extensions.eof.ERXEOGlobalIDUtilities.fetchObjectsWithGlobalIDs(ERXEOGlobalIDUtilities.java:290)
> at er.extensions.eof.ERXEOControlUtilities.objectsInRange(ERXEOControlUtilities.java:662)
> at er.extensions.batching.ERXBatchingDisplayGroup.objectsInRange(ERXBatchingDisplayGroup.java:384)
> at er.extensions.batching.ERXBatchingDisplayGroup.refetch(ERXBatchingDisplayGroup.java:423)
> at er.extensions.batching.ERXBatchingDisplayGroup.refetchIfNecessary(ERXBatchingDisplayGroup.java:132)
> at er.extensions.batching.ERXBatchingDisplayGroup.hasMultipleBatches(ERXBatchingDisplayGroup.java:229)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1.methodValue(NSKeyValueCoding.java:636)
> at com.webobjects.foundation.NSKeyValueCoding$_MethodBinding.valueInObject(NSKeyValueCoding.java:1134)
> at com.webobjects.foundation.NSKeyValueCoding$DefaultImplementation.valueForKey(NSKeyValueCoding.java:1324)
> at com.webobjects.appserver.WODisplayGroup.valueForKey(WODisplayGroup.java:3122)
> at com.webobjects.foundation.NSKeyValueCoding$Utility.valueForKey(NSKeyValueCoding.java:447)
> at com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:212)
> at com.webobjects.foundation.NSKeyValueCodingAdditions$Utility.valueForKeyPath(NSKeyValueCodingAdditions.java:151)
> at com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:217)
> at com.webobjects.appserver.WOComponent.valueForKeyPath(WOComponent.java:1804)
> at com.webobjects.appserver._private.WOKeyValueAssociation.valueInComponent(WOKeyValueAssociation.java:50)
> at com.webobjects.appserver.WOAssociation.booleanValueInComponent(WOAssociation.java:276)
>
> ....
>
> Louis Demers eng.
> Vice-President, Co-Founder
> Obzerv Technologies Inc.
> 400 Jean Lesage, suite 201
> Quebec, QC, Canada
> G1K 8W1
> T 418.524.3522
> F 418.524.6745
> www.obzerv.com
>
>
>
>
> Louis Demers eng.
> www.obzerv.com
>
>
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Chuck Hill Senior Consultant / VP Development
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