Collection proxy problem

[Eric Kelm <er...@vsgadmin.com>]

I get the following error when trying to implement a collection proxy (from
p6spy)

***************STACK TRACE**********************************

03 Nov 2005 09:55:59,560 ERROR [PoolThread-1]
PersistentField     - while set field: 
[try to set 'object value' in 'target object'
target obj class: com.vsg.project.businessobjects.CustomerBO
target field name: billingAccountNumbers
target field type: class java.util.Vector
target field declared in: com.vsg.project.businessobjects.CustomerBO
object value class: org.apache.ojb.broker.core.proxy.ListProxyDefaultImpl
object value: org.apache.ojb.broker.core.proxy.ListProxyDefaultImpl@1712193
]
org.apache.ojb.broker.metadata.MetadataException: IllegalAccess error
setting field:billingAccountNumbers in
object:com.vsg.encompass.businessobjects.CustomerBO
	at
org.apache.ojb.broker.metadata.fieldaccess.PersistentFieldDirectAccessImplNe
w.setValueFor(Unknown Source)
	at
org.apache.ojb.broker.metadata.fieldaccess.PersistentFieldDirectAccessImplNe
w.set(Unknown Source)
	at
org.apache.ojb.broker.core.QueryReferenceBroker.retrieveCollection(Unknown
Source)
	at
org.apache.ojb.broker.core.QueryReferenceBroker.retrieveCollections(Unknown
Source)
	at
org.apache.ojb.broker.accesslayer.RsIterator.getObjectFromResultSet(Unknown
Source)
	at org.apache.ojb.broker.accesslayer.RsIterator.next(Unknown Source)
	at
org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(Unknown
Source)
	at
org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(Unknown
Source)
	at
org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(Unknown
Source)
	at
org.apache.ojb.broker.core.PersistenceBrokerImpl.getCollectionByQuery(Unknow
n Source)
	at
org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(
Unknown Source)
	at
org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(
Unknown Source)
	at
com.vsg.encompass.businessdelegates.CustomerServicesBD.listCustomers(Custome
rServicesBD.java:156)
	at
com.vsg.encompass.service.EncompassServices.listCustomers(EncompassServices.
java:124)
	at
com.vsg.encompass.handlers.CustomerListHandler.getCustomerBeans(CustomerList
Handler.java:47)
	at
com.vsg.encompass.screens.unknownticket.UnknownTicketHomeScreen.setTicketTab
le(UnknownTicketHomeScreen.java:51)
	at
com.vsg.encompass.screens.unknownticket.UnknownTicketHomeScreen.<init>(Unkno
wnTicketHomeScreen.java:41)
	at
com.vsg.encompass.util.EncompassUtils.setInitialScreen(EncompassUtils.java:9
5)
	at com.vsg.encompass.app.Encompass.init(Encompass.java:135)
	at nextapp.echo.EchoInstance.doInit(EchoInstance.java:186)
	at nextapp.echoservlet.InstancePeer.init(InstancePeer.java:806)
	at nextapp.echoservlet.Initializer.service(Initializer.java:229)
	at nextapp.echoservlet.Connection.process(Connection.java:459)
	at nextapp.echoservlet.EchoServer.process(EchoServer.java:314)
	at nextapp.echoservlet.EchoServer.doPost(EchoServer.java:234)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
	at
com.vsg.encompass.servlet.EncompassServlet.service(EncompassServlet.java:118
)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:356)
	at
org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandl
er.java:294)
	at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
	at org.mortbay.http.HttpContext.handle(HttpContext.java:1776)
	at
org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext
.java:514)
	at org.mortbay.http.HttpContext.handle(HttpContext.java:1726)
	at org.mortbay.http.HttpServer.service(HttpServer.java:879)
	at org.mortbay.http.HttpConnection.service(HttpConnection.java:790)
	at
org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:952)
	at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
	at
org.mortbay.http.SocketListener.handleConnection(SocketListener.java:196)
	at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
	at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:487)
Caused by: java.lang.IllegalArgumentException
	at sun.reflect.UnsafeObjectFieldAccessorImpl.set(Unknown Source)
	at java.lang.reflect.Field.set(Unknown Source)
	... 41 more

*******************END STACK TRACE*****************************************

In my OJB.properties file, I am using ManageableVector for the collection
class
OqlCollectionClass=org.apache.ojb.broker.util.collections.ManageableVector

Just needing help on what I am doing wrong here. Thanks in advance.

---------
Eric Kelm
Developer, VSG Worldwide LLC
510 Spur 63
Longview, TX 75601
903.297.8740
eric@vsgadmin.com
http://www.vsgadmin.com
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