Oh boy. What do you recommend in the meantime? Do I have to add another column just to hold the type like the documentation example shows? Not the best solution in this case, but I guess it can be done if need be.
-Dave On Wed, Aug 6, 2008 at 2:47 PM, Andrus Adamchik <[EMAIL PROTECTED]> wrote: > Ok, I see. This indeed is a limitation of the inheritance algorithm. We > can't evaluate the inheritance qualifier expression in-memory in this case. > We can probably improve on that in the future, but there is no easy fix. > > Andrus > > > On Aug 6, 2008, at 2:29 PM, Dave Dombrosky wrote: > >> Yes it is just a 1:1 mapping on the relationship. >> >> Here is the stack trace: >> >> org.apache.cayenne.exp.ExpressionException: [v.3.0-SNAPSHOT Aug 01 >> 2008 19:55:10] Error evaluating expression 'db:some_relationship != >> null' >> at >> org.apache.cayenne.exp.parser.SimpleNode.evaluate(SimpleNode.java:331) >> at org.apache.cayenne.exp.Expression.match(Expression.java:367) >> at >> org.apache.cayenne.map.EntityInheritanceTree.entityMatchingRow(EntityInheritanceTree.java:97) >> at >> org.apache.cayenne.map.EntityInheritanceTree.entityMatchingRow(EntityInheritanceTree.java:83) >> at >> org.apache.cayenne.access.ObjectResolver.objectFromDataRow(ObjectResolver.java:194) >> at >> org.apache.cayenne.access.ObjectResolver.objectsFromDataRows(ObjectResolver.java:121) >> at >> org.apache.cayenne.access.ObjectResolver.synchronizedObjectsFromDataRows(ObjectResolver.java:101) >> at >> org.apache.cayenne.access.DataDomainQueryAction$ObjectConversionStrategy.toObjects(DataDomainQueryAction.java:591) >> at >> org.apache.cayenne.access.DataDomainQueryAction$SingleObjectConversionStrategy.convert(DataDomainQueryAction.java:661) >> at >> org.apache.cayenne.access.DataDomainQueryAction.interceptObjectConversion(DataDomainQueryAction.java:466) >> at >> org.apache.cayenne.access.DataDomainQueryAction.execute(DataDomainQueryAction.java:128) >> at >> org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java:740) >> at >> org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:317) >> at >> org.apache.cayenne.util.ObjectContextQueryAction.execute(ObjectContextQueryAction.java:96) >> at >> org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1336) >> at >> org.apache.cayenne.access.DataContext.performQuery(DataContext.java:1325) >> at >> org.apache.cayenne.access.ToOneFault.doResolveFault(ToOneFault.java:82) >> at >> org.apache.cayenne.access.ToOneFault.resolveFault(ToOneFault.java:55) >> at >> org.apache.cayenne.CayenneDataObject.readProperty(CayenneDataObject.java:208) >> at >> org.apache.cayenne.CayenneDataObject.setToOneTarget(CayenneDataObject.java:295) >> >> -Dave >> >> >> On Wed, Aug 6, 2008 at 11:59 AM, Andrus Adamchik <[EMAIL PROTECTED]> >> wrote: >>> >>> Could you post a bigger part of the stack trace (at least everything that >>> has org.apache.cayenne in it)? >>> >>> From what I can see, this is related to in-memory evaluation of the >>> qualifier. If that's a to-one relationship based on FK, intuitively this >>> should work, but it probably hits a limitation on in-memory evaluation. >>> >>> Andrus >>> >>> >>> On Aug 5, 2008, at 5:23 PM, Dave Dombrosky wrote: >>> >>>> I am currently trying to use ObjEntity Inheritance in my project, but >>>> I am running into some difficulties. I was hoping that I could use >>>> "someRelationship != null" as the qualifier, but I get the following >>>> error when trying to run the code: >>>> >>>> org.apache.cayenne.exp.ExpressionException: [v.3.0-SNAPSHOT Aug 01 >>>> 2008 19:55:10] Error evaluating expression 'db:some_relationship != >>>> null' >>>> >>>> Am I doing something wrong here, or did I find a bug? >>>> >>>> -Dave >>>> >>> >>> >> > >
