Hello.
I am trying to issue a query from the modeler to the projects DataMap
and a selected DataSource. I am stumbling and need some help..
Here is my current problematic stack trace from issuing a *data rows*
SelectQuery on an entity called "MyEntity".
Caused by: java.lang.ClassNotFoundException: myapp.data.MyEntity
at java.lang.Class.forName(Class.java:242)
at org.apache.cayenne.util.Util.getJavaClass(Util.java:570)
at org.apache.cayenne.map.ObjEntity.getJavaClass(ObjEntity.java:256)
at
org.apache.cayenne.reflect.PersistentDescriptorFactory.getDescriptor
(PersistentDescriptorFactory.java:50)
at org.apache.cayenne.reflect.ClassDescriptorMap.createDescriptor
(ClassDescriptorMap.java:128)
at
org.apache.cayenne.reflect.LazyClassDescriptorDecorator.checkDescriptorI
nitialized(LazyClassDescriptorDecorator.java:49)
at org.apache.cayenne.reflect.LazyClassDescriptorDecorator.getEntity
(LazyClassDescriptorDecorator.java:73)
at
org.apache.cayenne.access.trans.SelectTranslator.appendQueryColumns
(SelectTranslator.java:357)
at
org.apache.cayenne.access.trans.SelectTranslator.buildResultColumns
(SelectTranslator.java:332)
at org.apache.cayenne.access.trans.SelectTranslator.createSqlString
(SelectTranslator.java:107)
at
org.apache.cayenne.dba.postgres.PostgresSelectTranslator.createSqlString
(PostgresSelectTranslator.java:31)
at org.apache.cayenne.access.trans.QueryAssembler.createStatement
(QueryAssembler.java:95)
at org.apache.cayenne.access.jdbc.SelectAction.performAction
(SelectAction.java:71)
at org.apache.cayenne.access.DataNodeQueryAction.runQuery
(DataNodeQueryAction.java:57)
at org.apache.cayenne.access.DataNode.performQueries(DataNode.java:236)
So the problem is that myapp.data.MyEntity does not exist. Is there
some smart trick to duplicate the model and make all ObjEntities
generic? Or perhaps generate and load the classes in a disposable
client class loader?
Regards,
- Tore.
