Re: Performance issues

2009-04-20 Thread David Leangen
Ok, now I see why! findAll( Class, Collection ) actually executes one transaction for each PK in the collection!! Here is an excerpt of the log. 8428 openjpa TRACE [$Proxy26:1240220275057:task1] openjpa.jdbc.SQL - t 27011334, conn 15221176 executing prepstmnt 30712384 SELECT t0.value,

Can't query against a MappedSuperclass

2009-04-20 Thread jim weaver
I have the following: @MappedSuperclass class A { } @Entity class B extends A { } @Entity class C extends A { } and I try to do this type of query: SELECT a FROM A a I receive error message An error occurred while parsing the query filter SELECT a FROM A a. Error message: The name A is not

Re: Can't query against a MappedSuperclass

2009-04-20 Thread Marc Logemann
In the same documentation the following is stated and this was always my definition of querying mappedSC. Section 1.3 A mapped superclass is a non-entity class that can define persistent state and mapping information for entity subclasses. Mapped superclasses are usually abstract. Unlike

Re: OPENJPA_SEQUENCE_TABLE: needed even with IDENTITY columns?

2009-04-20 Thread Pinaki Poddar
1. To verify that OPENJPA_SEQUENCE_TABLE is not getting created by another entity, can you run the application with a single simple class such as @Entity public class PObject { @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private long id; public

Re: OPENJPA_SEQUENCE_TABLE: needed even with IDENTITY columns?

2009-04-20 Thread Tedman Leung
I should briefly mention that I had the same problem using the MySql database. I'm sure I'm not using the SEQUENCE table because I manually created my database tables and I was just migrating to using the schema generator. In my case it was tracked down to using an @EmbeddedId in the model

Problems in setting up the work enviroment.

2009-04-20 Thread ashish paliwal
Hello, I am new GSOC guy and I will be working on the Slice module. I was trying to set up my development environment and downloaded the 1.2.1 release for the same. I was trying to compile the hellojpa program given in example folder but it is not able to find javax.persistence package. Actually