Finder that returns Collection complains about more than one row

[Saad Rehmani]

Hi all,

I have a finder method in my local home with this signature:

public java.util.Collection findByManufacturer (String manufacturer) throws
FinderException;

and am getting this error:

javax.ejb.FinderException: finder/ejbSelect 'findByManufacturer'has returned
more than one value. We were expecting only ONE value. See EJB Spec
10.5.6.1, 10.5.7.1

from what i understand, shouldn't the finder allow multiple rows to be
returned? i looked up the EJB spec and that portion seems to address
single-object finders.

system info is as follows:

java weblogic.Admin VERSION
WebLogic Server 6.1 SP2 12/18/2001 11:13:46 #154529
WebLogic XML Module 6.1 SP2 12/18/2001 11:28:02 #154529

thanks,

-saad

[Rajesh Mirchandani]

This should work. Did you recompile your beans when you upgraded to SP2?

Saad Rehmani wrote:

--
Rajesh Mirchandani
Developer Relations Engineer
BEA Support

[Saad Rehmani]

yes, just to verify i just did a complete re-assembly ( compile beans ; jar
; weblogic.ejbc ; move to domain\config\applications\application ) and am
still getting the same error as before.

furthermore, i dont know about wl internals at all, but it seems that the
container does recognize that this is a collection since the stacktrace
reveals a call to
weblogic.ejb20.cmp.rdbms.RDBMSPersistenceManager.collectionFinder() ...

the stack trace in question is pasted below. thanks for any help.

-saad

<Feb 19, 2002 9:49:14 PM CST> <Error> <HTTP>
<[WebAppServletContext(595826,catal
og,/catalog)] Root cause of ServletException

javax.ejb.FinderException: finder/ejbSelect 'findByManufacturer'has returned
mor
e than one value. We were expecting only ONE value. See EJB Spec 10.5.6.1,
10.
5.7.1

at
com.metavonni.platinum.catalog.item.PhoneBean_g458gu__WebLogic_CMP_RD
BMS.ejbFindByManufacturer(PhoneBean_g458gu__WebLogic_CMP_RDBMS.java:1297)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.ejb20.cmp.rdbms.RDBMSPersistenceManager.collectionFinder(RDB
MSPersistenceManager.java:274)
at
weblogic.ejb20.manager.BaseEntityManager.collectionFinder(BaseEntityM
anager.java:669)
at
weblogic.ejb20.manager.BaseEntityManager.collectionFinder(BaseEntityM
anager.java:642)
at
weblogic.ejb20.internal.EntityEJBLocalHome.finder(EntityEJBLocalHome.
java:381)
at
com.metavonni.platinum.catalog.item.PhoneBean_g458gu_LocalHomeImpl.fi
ndByManufacturer(PhoneBean_g458gu_LocalHomeImpl.java:184)
at jsp_servlet.__x._jspService(__x.java:102)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)

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