Apple

On May 11, 2011, at 5:29 AM, email@hidden wrote:

Hi,
Thanks for your reply but I use ERXBatchingDisplayGroup (see attached) and in my search class :

individuList = EOUvOuvertes.fetchStudentViaUVz(ed, anUniv, prdUniv, diplome, niveau, uv, nom, prenom, nombre);//get OutOfMemory here
fetchEtudiantViaUvDg.setObjectArray(individuList);
fetchEtudiantViaUvDg.setCurrentBatchIndex(individuList.count());

You should not need to do that in code. That will fetch everything all at once. You should be setting the qualifier on the fetch spec that the ERXBatchingDisplayGroup is using.

Data fetched from a stored procedure is just data (I think), not EOs that are fetched from an entity. That data is read only, it can't be updated. You could use a stored procedure to just fetch the primary key and then use something like ERXEOControlUtilities public static NSArray faultsForRawRowsFromEntity(EOEditingContext ec, NSArray primKeys, String entityName) to convert them into EOs.

Chuck

thanks for your help

========================================

Message du : 11/05/2011
De : "Pascal Robert " <email@hidden>
A : email@hidden
Copie à : email@hidden, email@hidden, email@hidden, email@hidden
Sujet : Re: Fetching on 2 EOMODELS using different schema in DATABASE with but have relationship

Le 2011-05-11 à 07:58, email@hidden a écrit :

> Hi,
>
> I follwed all your instructions and corrected my eomodel and my fetch spec. give this request.
>
> 33963 [WorkerThread0] DEBUG NSLog - evaluateExpression:
> "SELECT DISTINCT t0.ANC_UV_OUVERTE_ID, t0.CATEG_ID, t0.CRE_DATE, t0.DIPL_SPEC_$C, t0.DIPLOME_$C, t0.MAJ_AUTEUR, t0.MAJ_DATE, t0.NLE_UV_OUVERTE_ID, t0.UV_CREDITS_ECTS, t0.UV_OUV_ID
> FROM GEST_UV.UV_OUVERTES t0, GEST_UV.UV_OUV T1, GERRY.ETU_INSCR_ADM T3, GERRY.DIPLOME T2
> WHERE ((T1.AN_UNIV like ? ESCAPE '\' AND T1.PRD_UNIV like ? ESCAPE '\') OR t0.DIPLOME_$C like ? ESCAPE '\' OR T3.NIVEAU_ADM = ? OR T1.UV_OUV_ID = ?) AND t0.UV_OUV_ID = T1.UV_OUV_ID AND T2.DIPLOME_$C = T3.DIPLOME_$C AND t0.DIPLOME_$C = T2.DIPLOME_$C ORDER BY t0.DIPLOME_$C ASC"
> withBindings: 1:"2005"(anUniv), 2:"1A"(prdUniv), 3:"ING2"(diplomec), 4:"3"(niveauAdm), 5:131(uvOuvId)>
>
> The problem is the time(very very very slow) it takes to return data and get outOfMemory exception. (see below)
>
> 2520004 [WorkerThread0] DEBUG NSLog - 68758 row(s) processed

68758 rows, that's a lot of data! If you want to display the data in a display group, use ERXBatchingDisplayGroup from Project Wonder, this way it will fetch only the needed objects for the current batch (eg, if you show 10 objects at a time, ERXBatchingDisplayGroup will fetch only 10 objects per page). Something like this:

public ERXBatchingDisplayGroup dgMembers;
static EOQualifier publicMembersQualifier = Member.SHOW_PROFILE.is(true);
public final static EOSortOrdering lastUpdateSort = new EOSortOrdering(Member.DATE_LAST_MODIFICATION_KEY,EOSortOrdering.CompareDescending);

EODatabaseDataSource ds = new EODatabaseDataSource(ec, Member.ENTITY_NAME);
dgMembers = new ERXBatchingDisplayGroup();
dgMembers.setNumberOfObjectsPerBatch(10);
dgMembers.setDataSource(ds);
dgMembers.setSortOrderings(new NSArray(lastUpdateSort));
dgMembers.setQualifier(publicMembersQualifier);

Even if Oracle might returns 68 758 rows fast, EOF will take a some time to convert those 68 758 rows to EOs.

> 2520005 [WorkerThread0] DEBUG NSLog - === Commit Internal Transaction
> 2527790 [WorkerThread0] WARN NSLog - Throwable occurred: java.lang.OutOfMemoryError: Java heap space
> 2527790 [WorkerThread0] WARN NSLog - Workerthread exiting due to error, respawning with ID 10000...
> Exception in thread "WorkerThread0" com.webobjects.foundation.NSForwardException [java.lang.OutOfMemoryError] Java heap space:java.lang.OutOfMemoryError: Java heap space
>
> ========================================
>
> Message du : 11/05/2011
> De : "Susanne Schneider "
> A : email@hidden
> Copie à : email@hidden
> Sujet : Re: Fetching on 2 EOMODELS using different schema in DATABASE with but have relationship
>
>
>
> Hi,
>
> at least in Oracle it should be possible if you
>
> 1) qualify the table name with the schema name, e.g. "b.individu"
> 2) allow the user of the separate schemes to select the tables from the
> other schemes.
>
> If you have static (not changing) models, you can achieve the first by
> adding the scheme names to the table names in your EOModel. WO will then
> use the full qualified table names to build the fetch specification. For
> the second you have to extend your initial SQL-generation script.
>
> HTH,
> Susanne
>
> >
> > Message: 3
> > Date: Tue, 10 May 2011 10:36:49 -0700
> > From: Chuck Hill
> > Subject: Re: Fetching on 2 EOMODELS using different schema in DATABASE
> > with but have relationship
> > To: email@hidden
> > Cc: WebObjects webobjects-dev
> > Message-ID:
> > Content-Type: text/plain; charset="us-ascii"
> >
> > I think this is something that EOF can't do: qualify across schemas (databases in EOF's view).
> >
> > Chuck
> >
> > On May 10, 2011, at 4:49 AM, email@hidden wrote:
> >
> >> Hi all,
> >>
> >> I have 2 models using different schema of a database. but these schemas have table which have relationship. So in my model "A", I use a fetch spec. on a table which have the maximum relation with tables in model "A" and "B".
> >> So when I excute my fech spec, WO don't see the schema of model A and show exception ORA-00942 : table or view does not exist. This a the querry generate by WO on fetching :
> >>
> >> "SELECT t0.ANC_UV_OUVERTE_ID, t0.CATEG_ID, t0.CRE_DATE, t0.DIPL_SPEC_$C, t0.DIPLOME_$C, t0.MAJ_AUTEUR, t0.MAJ_DATE, t0.NLE_UV_OUVERTE_ID, t0.UV_CREDITS_ECTS, t0.UV_OUV_ID FROM UV_OUVERTES t0, INDIVIDU T4, UV_OUV T1, ETU_INSCR_ADM T3, DIPLOME T2 WHERE ((T1.AN_UNIV like ? ESCAPE '\' AND T1.PRD_UNIV like ? ESCAPE '\') OR t0.DIPLOME_$C like ? ESCAPE '\' OR T3.NIVEAU_ADM = ? OR T1.UV_OUV_ID = ?) AND T3.CONSEILLER_ID = T4.INDIV_ID AND t0.UV_OUV_ID = T1.UV_OUV_ID AND T2.DIPLOME_$C = T3.DIPLOME_$C AND t0.DIPLOME_$C = T2.DIPLOME_$C ORDER BY T4.NOM ASC, T4.PRENOM ASC" withBindings: 1:"2005"(anUniv), 2:"1A"(prdUniv), 3:"ING2"(diplomec), 4:"1"(niveauAdm), 5:131(uvOuvId)>"
> >>
> >> tables INDIVIDU, ETU_INSCR_ADM and DIPLOME are table of schema B but WO can't translate it like that i.e : A.INDIVIDU or A.ETU_INSCR_ADM.
> >>
> >> Thanks for your help
> >>
> >> PS : I have a storedProcedure which return data and do the same request but I don't know how to insert it in my code and binding it with WODisplayGroup for batch view (previous, next) with 10 students per batch.
> >> _____________________________________________

--
Chuck Hill Senior Consultant / VP Development

Come to WOWODC this July for unparalleled WO learning opportunities and real peer to peer problem solving! Network, socialize, and enjoy a great cosmopolitan city. See you there! http://www.wocommunity.org/wowodc11/