Hi Andre,
This is more like incorrect usage of Collection.toArray() method
than OJB related problem.
Please print emptyArray and emptyArray.length before the line
> MGT_Request[] resArray = (MGT_Request[])acc.toArray(emptyArray);
Is emptyArray not null?
Is emptyArray.length really 0?
Regards,
Oleg
On Sunday 25 January 2004 13:22, A Leg wrote:
> Hi
>
> I get some more elements on my getCollectionByQuery problem.
>
> It seems that elements of the Collection I get are not valid to be
> casted by my class.
> If I change to put an Iterator on the Collection it works good as soon I
> don't try to cast to my Objects.
>
> Does anybody can help me ?
> I am realy stuck.
>
> Andre
>
> I change the code to :
>
> System.out.println("Send COLLECTIONQUERY MGT ");
> Collection results =
> (Collection)broker.getCollectionByQuery(listQuery);
> //System.out.println("Get COLLECTIONQUERY MGT Rows : " +
> results.size());
> System.out.println("Get COLLECTIONQUERY MGT Rows : INCONNU");
> Iterator iter = results.iterator();
> Collection acc = new Vector();
> System.out.println("Get COLLECTIONQUERY ojbIterator get ");
> MGT_Request tmpReq = new MGT_Request();
> System.out.println("Get COLLECTIONQUERY ojbIterator iter");
> while (iter.hasNext())
> {
> acc.add(iter.next());
> }
> System.out.println("Get COLLECTIONQUERY ojbIterator done ");
> MGT_Request[] resArray = (MGT_Request[])acc.toArray(emptyArray);
> System.out.println("Get COLLECTIONQUERY toArray done ");
>
> And I got the error message :
>
> Send COLLECTIONQUERY MGT
> Get COLLECTIONQUERY MGT Rows : INCONNU
> Get COLLECTIONQUERY ojbIterator get
> Get COLLECTIONQUERY ojbIterator iter
> Get COLLECTIONQUERY ojbIterator done
> java.lang.ArrayStoreException
> at java.lang.System.arraycopy(Native Method)
> at java.util.Vector.toArray(Vector.java:688)
> at
> org.compiere.mfg_scm.dbManager.TaskConsumer.mfgGetCollectionByQuery(Unknown
> Source)
> at
> org.compiere.mfg_scm.dbManager.DbManagerImpl.mfgGetCollectionByQuery(Unknow
>n Source)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:3
>9) at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp
>l.java:25) at java.lang.reflect.Method.invoke(Method.java:324)
> at
> sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
> at sun.rmi.transport.Transport$1.run(Transport.java:148)
> at java.security.AccessController.doPrivileged(Native Method)
> at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
> at
> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
> at
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:
>701) at java.lang.Thread.run(Thread.java:534)
>
> A Leg wrote:
> > Hi
> >
> > I have some problem using getCollectionByQuery.
> >
> > Here is the peace of Code :
> >
> > System.out.println("Send COLLECTIONQUERY MGT ");
> > Collection results =
> > (Collection)broker.getCollectionByQuery(listQuery);
> > System.out.println("Get COLLECTIONQUERY MGT Rows : " +
> > results.size());
> > MGT_Request[] resArray =
> > (MGT_Request[])results.toArray(emptyArray);
> > System.out.println("Get COLLECTIONQUERY toArray done ");
> >
> > I get this trace :
> >
> > Send COLLECTIONQUERY MGT
> > Get COLLECTIONQUERY MGT Rows : 2
> > java.lang.ArrayStoreException
> > at java.lang.System.arraycopy(Native Method)
> > at java.util.Vector.toArray(Vector.java:688)
> > at
> > org.compiere.mfg_scm.dbManager.TaskConsumer.mfgGetCollectionByQuery(Unkno
> >wn Source)
> > at
> > org.compiere.mfg_scm.dbManager.DbManagerImpl.mfgGetCollectionByQuery(Unkn
> >own Source)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at
> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java
> >:39)
> >
> > at
> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI
> >mpl.java:25)
> >
> > at java.lang.reflect.Method.invoke(Method.java:324)
> > at
> > sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
> > at sun.rmi.transport.Transport$1.run(Transport.java:148)
> > at java.security.AccessController.doPrivileged(Native Method)
> > at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
> > at
> > sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
> > at
> > sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.jav
> >a:701)
> >
> > at java.lang.Thread.run(Thread.java:534)
> >
> > I have 2 records in my test table, so the size is good.
> > But methods of Collection to extract objects from the Collection :
> > Iterator, toArray seems to have problem with the results Collection.
> >
> > When using the pb broker with getObjectByQuery on the same table and
> > same object it is working good.
> >
> > I am using db-ojb-1.0.rc4
> >
> > Can anybody help me, I turn alone this problem from one day and get no
> > progress.
> >
> > Andre Legendre
> >
> >
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