eclipselink-users http://dev.eclipse.org/mhonarc/lists/eclipselink-users/maillist.html eclipselink-users en-us Fri, 20 Nov 2009 15:40:20 GMT Fri, 20 Nov 2009 15:40:20 GMT http://blogs.law.harvard.edu/tech/rss MHonArc RSS 2.0 RCFile webmaster@eclipse.org (Webmaster) webmaster@eclipse.org (Webmaster) eclipselink-users http://www.eclipse.org/eclipse.org-common/themes/Phoenix/images/eclipse_home_header.jpg http://dev.eclipse.org/mhonarc/lists/eclipselink-users/maillist.html Re: [eclipselink-users] Failed insert results in invalid cache state http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03744.html James, This is a response to a previous comment you made. I had to drop this research for projects but now i'm back on it. I wanted to follow up with something you mentioned: (EclipseLink will never generate duplicates). What type of ID generator are you referring to? And, how is the guarantee made (in a clustered environment)? I can only think of a few ways: 1) A database table manages the sequences (select from table, auto-update to next value) 2) EclipseLink validates the value does not already exist as an ID in the table prior to assigning it to the object. However this doesn't guarantee that the ID won't be assigned by another process elsewhere, inserting into the same table. 3) In the above instance, a sequence manager manages state across all instance of EclipseLink in use. James Sutherland wrote: > > This is pretty advanced stuff, so you may want to reconsider you reasons > for trying to do this in the first place. You might want to instead catch > the exception in your app and retry the whole transaction, or avoid having > duplicate sequence numbers in the first place (EclipseLink will never > generate duplicates). > > To get your exception handler to work, you can't create a copy, as it > violates object identity. You need to reset the object's pk to null. You > could use the descriptor to do this generically. > > > Object value = builder.getSequenceMapping().getAttributeValue(null, > session); > builder.getSequenceMapping().setAttributeValueInObject(dup, value); > > -- View this message in context: http://old.nabble.com/Failed-insert-results-in-invalid-cache-state-tp25384148p26443298.html Sent from the EclipseLink - Users mailing list archive at Nabble.com. ]]> Fri, 20 Nov 2009 15:32:29 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03744.html panth13@xxxxxxx (bryans) [eclipselink-users] batch-writing mode Oracle-JDBC leads to integrity constraint exception when a class contains lob field http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03743.html Hi all, I encountered another problem with Lob fields. Do you think this is a Bug in EclipseLink, Oracle or expected behavior. Given: A Test that - open a transaction - inserts a lot of Classes A with a Lob Field - Then insert some classes B that referenci... Hi all, I encountered another problem with Lob fields. Do you think this is a Bug in EclipseLink, Oracle or expected behavior. Given: A Test that - open a transaction - inserts a lot of Classes A with a Lob Field - Then insert some classes B that referencing class A with a manyToMany-Mapping. - Commit Transaction When <property name="eclipselink.jdbc.batch-writing" value="Oracle-JDBC" /> Then we get an java.sql.SQLException: ORA-02291 - Parent-Key not found. You see all necessary inserts into table A in the log. But the insert into the mapping table fails, although the id is correct and should be there. When <property name="eclipselink.jdbc.batch-writing" value="JDBC" /> Then everything runs fine. When the tests is executed with H2 or DB2 everything runs fine. And also we think to remember, that with the Oracle-JDBC setting and toplink the test runs fine. regards, Hans ______________________________________________________ GRATIS für alle WEB.DE-Nutzer: Die maxdome Movie-FLAT! Jetzt freischalten unter http://movieflat.web.de ]]> Thu, 19 Nov 2009 17:04:19 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03743.html hansharz_eclipselink@xxxxxxx (Hans Harz) [eclipselink-users] Re: IndirectMap.containsKey leads to Exception because, DISTINCT on @Lob-Field http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03742.html -- Oracle &lt;http://www.oracle.com&gt; Reinhard Girstenbrei | Senior Principal Technical Support Engineer Phone: +498914302318 | Mobile: +491775941318 Oracle Oracle Customer Service ORACLE Deutschland GmbH | Riesstr. 25 | 80992 M&#xFC;nchen ORACLE Deutschland GmbH,... Hi Hans,
the stack trace shows that you are using a query optimization feature called batch reading

e.g.

@NamedQuery(

...
hints= {

@QueryHint(
name=QueryHints.BATCH, 

...

Batch reading and an attributed mapped to a LOB column run into this problem.
As James described there are two possible solutions:
1. Do not use batch reading.
or
2. Add another releationship mapping to an entity object that maps the LOB column.
For this relationship mapping no batch reading should be used.

Best regards,
Reinhard


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Today's Topics:

   1. Re: IndirectMap.containsKey leads to Exception because
      DISTINCT on @Lob-Field (Hans Harz)
   2. Re: Defining persistence.xml programmatically? (dhermanns)
   3. Re: ReadAllQuery fetch all (Janda Martin)
   4. Re: ReadAllQuery fetch all (christopher delahunt)


----------------------------------------------------------------------

Message: 1
Date: Wed, 18 Nov 2009 11:21:30 +0100
From: Hans Harz <hansharz_eclipselink@xxxxxx>
Subject: Re: [eclipselink-users] IndirectMap.containsKey leads to
	Exception because DISTINCT on @Lob-Field
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <1854269327@xxxxxx>
Content-Type: text/plain; charset=iso-8859-15

Hi James, Hi Reinhard,

thank you very much for your answers.

I'm not sure about your suggested workaround. How can I set the dontUseDistinct() property on the query, when I don't specify the query manually.
Is there a annotation based possibility on the Many-to-Many property? 

Right now the field in the owning class looks like this:
    @ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.REMOVE})
    @MapKey(name = "typeId")
    @XStreamAlias("customFields")
    private Map<CustomFieldType, CustomFieldValue> customFields;

and the CustomFieldValue class contains the Clob Field
   @Lob
    @Column(nullable = true)
    @XStreamAlias("stringValue")
    private String stringValue;

I searched the API and documentation but can't find anything.

Because the exception appeared at one of our customers a hint to a workaround through editing the persistence.xml and the orm.xml would be great.

Thanks in advance,
Hans



-----Ursprüngliche Nachricht-----
Von: "James Sutherland" <jamesssss@xxxxxxxxx>
Gesendet: 17.11.09 19:42:42
An: eclipselink-users@xxxxxxxxxxx
Betreff: Re: [eclipselink-users] IndirectMap.containsKey leads to Exception because DISTINCT on @Lob-Field


The distinct is used because you are using batch reading on the query. If
you do not set batch reading on the query then you will not have the issue. Batch reading uses a distinct to avoid fetching duplicate data. You can
disable the usage of the distinct by setting dontUseDistinct() on the
original batch query. But then you will be selecting duplicate potentially.

You could also try moving the Lob to another table, or use a fetch group
(LAZY) on the Lob to avoid selecting it by default.

We could probably try to auto-detect a Lob field in the descriptor and not
add the distinct, so you could log a bug for that.


Hans Harz-2 wrote:
Hi all,

I encountered a problem in our application. Maybe some of you can help me.

Using - EclipseLink 1.1.3
- Given a class A with a @Lob Field String stringValue;
- Given class B with @ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.REMOVE})
@MapKey(name = "field")
private Map<AType, A> As;

When I call As.containsKey(someAType) on the lazy loaded map Then a Query with a DISTINCT is created.
SELECT DISTINCT ...,t0.stringValue,...
this leads to the following exception on oracle databases (and we made a
test with DB2 and it also fails)
ORA-00932: inconsistent datatypes: expected - got CLOB

This is because DISTINCT queries are not allowed on BLOB or CLOB fields. Is this expected behavior?
Did we miss a restriction of eclipselink? Is there a way to not generate the query without DISTINCT?

In toplink we never had this problem, so it seems that toplink did not
generate the DISTINCT.

Here is the Stack Trace.

regards,
Hans

org.eclipse.persistence.exceptions.DatabaseException: Internal Exception:
java.sql.SQLException: ORA-00932: inconsistent datatypes: expected - got
CLOB Error Code: 932 Call: SELECT DISTINCT t1.ID, t1.EXPLICITVERSION,
t1.STRINGVALUE, t1.UUID, .....
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:332) org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:667) org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:512) org.eclipse.persistence.sessions.server.ServerSession.executeCall(ServerSession.java:536) org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:205) org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:191) org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:262) org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:599) org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:2518) org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRows(ExpressionQueryMechanism.java:2476) org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:481) org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:928) org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:664) org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:889) org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:458) org.eclipse.persistence.internal.sessions.AbstractSession.internalExecuteQuery(AbstractSession.java:2244) org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1181) org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1165) org.eclipse.persistence.mappings.ManyToManyMapping.extractResultFromBatchQuery(ManyToManyMapping.java:231) org.eclipse.persistence.internal.indirection.BatchValueHolder.instantiate(BatchValueHolder.java:58) org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:71) org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83) org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiateImpl(UnitOfWorkValueHolder.java:161) org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiate(UnitOfWorkValueHolder.java:230) org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83) org.eclipse.persistence.indirection.IndirectMap.buildDelegate(IndirectMap.java:110) org.eclipse.persistence.indirection.IndirectMap.getDelegate(IndirectMap.java:316) org.eclipse.persistence.indirection.IndirectMap.containsKey(IndirectMap.java:165)

_____________________________________________________________
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-----
http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland http://www.eclipse.org/eclipselink/
EclipseLink , http://www.oracle.com/technology/products/ias/toplink/
TopLink Wiki: http://wiki.eclipse.org/EclipseLink EclipseLink , http://wiki.oracle.com/page/TopLink TopLink Forums: http://forums.oracle.com/forums/forum.jspa?forumID=48 TopLink , http://www.nabble.com/EclipseLink-f26430.html EclipseLink Book: http://en.wikibooks.org/wiki/Java_Persistence Java Persistence --
View this message in context: http://old.nabble.com/IndirectMap.containsKey-leads-to-Exception-because-DISTINCT-on-%40Lob-Field-tp26390360p26395252.html
Sent from the EclipseLink - Users mailing list archive at Nabble.com.

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------------------------------

Message: 2
Date: Wed, 18 Nov 2009 03:08:19 -0800 (PST)
From: dhermanns <d.hermanns@xxxxxx>
Subject: Re: [eclipselink-users] Defining persistence.xml
	programmatically?
To: eclipselink-users@xxxxxxxxxxx
Message-ID: <26405973.post@xxxxxxxxxxxxxxx>
Content-Type: text/plain; charset=us-ascii


Thanks for the hint.
I filed it and you can find it here now:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=295427

Hopefully i was able to express what we would really appreciate to have ;)


Shaun Smith wrote:
You can enter a bug/enhancement request in Eclipse's bugzilla. You'll need to create an account before you can enter a bug. EclipseLink is an RT project and here's a quick link to entering an EclipseLink bug: https://bugs.eclipse.org/bugs/enter_bug.cgi?product=EclipseLink

    Shaun



--
Oracle <http://www.oracle.com>
Reinhard Girstenbrei | Senior Principal Technical Support Engineer
Phone: +498914302318 | Mobile: +491775941318
Oracle Oracle Customer Service

ORACLE Deutschland GmbH | Riesstr. 25 | 80992 München

ORACLE Deutschland GmbH, Hauptverwaltung: Riesstraße 25, D-80992 München
Geschäftsführer: Jürgen Kunz, Registergericht: Amtsgericht München, HRB 82775
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]]> Wed, 18 Nov 2009 17:13:26 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03742.html reinhard.girstenbrei@xxxxxxx (Reinhard Girstenbrei) Re: [eclipselink-users] ReadAllQuery fetch all http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03741.html _______________________________________________ eclipselink-users mailing list eclipselink-users@xxxxxxxxxxx https://dev.eclipse.org/mailman/listinfo/eclipselink-users _______________________________________________ eclipselink-users mailing list eclipseli... Hello Martin,
I do not believe joining (or batch reading, another option) on a collection mapping will work when using a cursor. Joining will cause multiple rows to be associated to the object, but the cursor will prevent going through the entire result set to build the object, so the returned objects will be based on a single row - and so collections will be incomplete. Batching may work, but since the batch query to bring in references is based on the original query, it negates the value of using a cursor as all the collection objects will be read in at once.

What I would suggest instead is using pagination to read in batches - for instance ordering results and setting the first row/max results on the query object to return a manageable size of results. A fetch join can then be used since all rows returned will be used to create the objects.

Best Regards,
Chris

Janda Martin wrote: 
Thank you, I tried "addJoinedAttribute" but theres problem. It doesn't work. It changed generated SQL command to use "select distinct e ..." instead of "select o ...".

<entityClass> has 4 lazy,optional OneToMany mappings that I nead to be fetched.

    @OneToMany(mappedBy = "datas", cascade = CascadeType.ALL)
    @OrderBy("dataType, azimut")
    private List<DData> dDataCollection;


ReadAllQuery readAllQuery = new ReadAllQuery(<entityClass>);
readAllQuery.setJPQLString("select object(o) from <table>");

ScrollableCursorPolicy policy = new ScrollableCursorPolicy();
policy.setPageSize(200);
policy.setResultSetType(ScrollableCursorPolicy.TYPE_SCROLL_INSENSITIVE);
policy.setResultSetConcurrency(ScrollableCursorPolicy.CONCUR_READ_ONLY);

readAllQuery.useScrollableCursor(policy);

// your suggestion
readAllQuery.addJoinedAttribute(readAllQuery.getExpressionBuilder().anyOf("dDataCollection"));
// or - second one uses "get" instead of "anyOf" - throws exception
readAllQuery.addJoinedAttribute("dDataCollection");
// select distinct ... is generated on query execution

ScrollableCursor scrollableCursor = (ScrollableCursor) uow.executeQuery(readAllQuery);


I've tried FetchGroup but I get exception that FetchGroupManager isn't set/installed.

Correctly and as I expect works only fetch = EAGER. There is generated new select DData for every entity.

It would be great to have some kind of QueryHint/boolean property on DatabaseQuery to disable lazy loading.

  Please can you give me another advice how to make it. I think that my problem is typical for Java SE applications when you need select some entities from database. Close all connections and run some computation on selected entities.

  Martin

----- Original Message -----
From: "Tom Ware" <tom.ware@xxxxxxxxxx>
To: "EclipseLink User Discussions" <eclipselink-users@xxxxxxxxxxx>
Sent: Tuesday, November 17, 2009 3:09:44 PM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna
Subject: Re: [eclipselink-users] ReadAllQuery fetch all

Hi Martin,

If you are using JPQL, JPQL allows you to specify fetch joins that will cause relationships to be automatically loaded. Have you tried that?

If you are using EclipseLink expressions, there is an addJoinedAttribute method you can use on your query.

-Tom

Martin Janda wrote:
Hello,
can you help me? please. I have Entity with lazy mappings. I need to read all Entity attributes Eager&Lazy trough ReadAllQuery (ScrollableCursor) and detach them. I need to use Entities after closing EM and EMF. So they can no longer fetch lazy mappings.
I need to work with selected Entities from JTable (needs lazy) in another context (needs all attributes including lazy mappings).
Is there any way how to do it in EclipseLink 1.1.3 Java SE, I prefer annotations or direct methods in EM/EMF/UOW.
Thank you very much.
Martin

PS Sorry for my english
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]]> Wed, 18 Nov 2009 14:03:24 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03741.html christopher.delahunt@xxxxxxx (christopher delahunt) Re: [eclipselink-users] ReadAllQuery fetch all http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03740.html _______________________________________________ eclipselink-users mailing list eclipselink-users@xxxxxxxxxxx https://dev.eclipse.org/mailman/listinfo/eclipselink-users Thank you, I tried "addJoinedAttribute" but theres problem. It doesn't work. It changed generated SQL command to use "select distinct e ..." instead of "select o ...". <entityClass> has 4 lazy,optional OneToMany mappings that I nead to be fetched. @OneToMany(mappedBy = "datas", cascade = CascadeType.ALL) @OrderBy("dataType, azimut") private List<DData> dDataCollection; ReadAllQuery readAllQuery = new ReadAllQuery(<entityClass>); readAllQuery.setJPQLString("select object(o) from <table>"); ScrollableCursorPolicy policy = new ScrollableCursorPolicy(); policy.setPageSize(200); policy.setResultSetType(ScrollableCursorPolicy.TYPE_SCROLL_INSENSITIVE); policy.setResultSetConcurrency(ScrollableCursorPolicy.CONCUR_READ_ONLY); readAllQuery.useScrollableCursor(policy); // your suggestion readAllQuery.addJoinedAttribute(readAllQuery.getExpressionBuilder().anyOf("dDataCollection")); // or - second one uses "get" instead of "anyOf" - throws exception readAllQuery.addJoinedAttribute("dDataCollection"); // select distinct ... is generated on query execution ScrollableCursor scrollableCursor = (ScrollableCursor) uow.executeQuery(readAllQuery); I've tried FetchGroup but I get exception that FetchGroupManager isn't set/installed. Correctly and as I expect works only fetch = EAGER. There is generated new select DData for every entity. It would be great to have some kind of QueryHint/boolean property on DatabaseQuery to disable lazy loading. Please can you give me another advice how to make it. I think that my problem is typical for Java SE applications when you need select some entities from database. Close all connections and run some computation on selected entities. Martin ----- Original Message ----- From: "Tom Ware" <tom.ware@xxxxxxxxxx> To: "EclipseLink User Discussions" <eclipselink-users@xxxxxxxxxxx> Sent: Tuesday, November 17, 2009 3:09:44 PM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna Subject: Re: [eclipselink-users] ReadAllQuery fetch all Hi Martin, If you are using JPQL, JPQL allows you to specify fetch joins that will cause relationships to be automatically loaded. Have you tried that? If you are using EclipseLink expressions, there is an addJoinedAttribute method you can use on your query. -Tom Martin Janda wrote: > Hello, > can you help me? please. I have Entity with lazy mappings. I need to > read all Entity attributes Eager&Lazy trough ReadAllQuery > (ScrollableCursor) and detach them. I need to use Entities after closing > EM and EMF. So they can no longer fetch lazy mappings. > I need to work with selected Entities from JTable (needs lazy) in > another context (needs all attributes including lazy mappings). > Is there any way how to do it in EclipseLink 1.1.3 Java SE, I prefer > annotations or direct methods in EM/EMF/UOW. > Thank you very much. > Martin > > PS Sorry for my english > _______________________________________________ > eclipselink-users mailing list > eclipselink-users@xxxxxxxxxxx > https://dev.eclipse.org/mailman/listinfo/eclipselink-users _______________________________________________ eclipselink-users mailing list eclipselink-users@xxxxxxxxxxx https://dev.eclipse.org/mailman/listinfo/eclipselink-users ]]> Wed, 18 Nov 2009 13:18:40 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03740.html jandam@xxxxxxx (Janda Martin) Re: [eclipselink-users] Defining persistence.xml programmatically? http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03739.html Thanks for the hint. I filed it and you can find it here now: https://bugs.eclipse.org/bugs/show_bug.cgi?id=295427 Hopefully i was able to express what we would really appreciate to have ;) Shaun Smith wrote: > > You can enter a bug/enhancement request in Eclipse's bugzilla. You'll > need to create an account before you can enter a bug. EclipseLink is an > RT project and here's a quick link to entering an EclipseLink bug: > https://bugs.eclipse.org/bugs/enter_bug.cgi?product=EclipseLink > > Shaun > -- View this message in context: http://old.nabble.com/Defining-persistence.xml-programatically--tp16402511p26405973.html Sent from the EclipseLink - Users mailing list archive at Nabble.com. ]]> Wed, 18 Nov 2009 11:08:19 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03739.html d.hermanns@xxxxxxx (dhermanns) Re: [eclipselink-users] IndirectMap.containsKey leads to Exception because DISTINCT on @Lob-Field http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03738.html Hi James, Hi Reinhard, thank you very much for your answers. I'm not sure about your suggested workaround. How can I set the dontUseDistinct() property on the query, when I don't specify the query manually. Is there a annotation based possibility on the Ma... Hi James, Hi Reinhard, thank you very much for your answers. I'm not sure about your suggested workaround. How can I set the dontUseDistinct() property on the query, when I don't specify the query manually. Is there a annotation based possibility on the Many-to-Many property? Right now the field in the owning class looks like this: @ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.REMOVE}) @MapKey(name = "typeId") @XStreamAlias("customFields") private Map<CustomFieldType, CustomFieldValue> customFields; and the CustomFieldValue class contains the Clob Field @Lob @Column(nullable = true) @XStreamAlias("stringValue") private String stringValue; I searched the API and documentation but can't find anything. Because the exception appeared at one of our customers a hint to a workaround through editing the persistence.xml and the orm.xml would be great. Thanks in advance, Hans > -----Ursprüngliche Nachricht----- > Von: "James Sutherland" <jamesssss@xxxxxxxxx> > Gesendet: 17.11.09 19:42:42 > An: eclipselink-users@xxxxxxxxxxx > Betreff: Re: [eclipselink-users] IndirectMap.containsKey leads to Exception because DISTINCT on @Lob-Field > > The distinct is used because you are using batch reading on the query. If > you do not set batch reading on the query then you will not have the issue. > Batch reading uses a distinct to avoid fetching duplicate data. You can > disable the usage of the distinct by setting dontUseDistinct() on the > original batch query. But then you will be selecting duplicate potentially. > > You could also try moving the Lob to another table, or use a fetch group > (LAZY) on the Lob to avoid selecting it by default. > > We could probably try to auto-detect a Lob field in the descriptor and not > add the distinct, so you could log a bug for that. > > > Hans Harz-2 wrote: > > > > Hi all, > > > > I encountered a problem in our application. Maybe some of you can help me. > > > > Using > > - EclipseLink 1.1.3 > > - Given a class A with a @Lob Field String stringValue; > > - Given class B with > > @ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.REMOVE}) > > @MapKey(name = "field") > > private Map<AType, A> As; > > > > When I call As.containsKey(someAType) on the lazy loaded map > > Then a Query with a DISTINCT is created. > > SELECT DISTINCT ...,t0.stringValue,... > > this leads to the following exception on oracle databases (and we made a > > test with DB2 and it also fails) > > ORA-00932: inconsistent datatypes: expected - got CLOB > > > > This is because DISTINCT queries are not allowed on BLOB or CLOB fields. > > Is this expected behavior? > > Did we miss a restriction of eclipselink? > > Is there a way to not generate the query without DISTINCT? > > > > In toplink we never had this problem, so it seems that toplink did not > > generate the DISTINCT. > > > > Here is the Stack Trace. > > > > regards, > > Hans > > > > org.eclipse.persistence.exceptions.DatabaseException: Internal Exception: > > java.sql.SQLException: ORA-00932: inconsistent datatypes: expected - got > > CLOB Error Code: 932 Call: SELECT DISTINCT t1.ID, t1.EXPLICITVERSION, > > t1.STRINGVALUE, t1.UUID, ..... > > org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:332) > > org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:667) > > org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:512) > > org.eclipse.persistence.sessions.server.ServerSession.executeCall(ServerSession.java:536) > > org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:205) > > org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:191) > > org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:262) > > org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:599) > > org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:2518) > > org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRows(ExpressionQueryMechanism.java:2476) > > org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:481) > > org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:928) > > org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:664) > > org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:889) > > org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:458) > > org.eclipse.persistence.internal.sessions.AbstractSession.internalExecuteQuery(AbstractSession.java:2244) > > org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1181) > > org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1165) > > org.eclipse.persistence.mappings.ManyToManyMapping.extractResultFromBatchQuery(ManyToManyMapping.java:231) > > org.eclipse.persistence.internal.indirection.BatchValueHolder.instantiate(BatchValueHolder.java:58) > > org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:71) > > org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83) > > org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiateImpl(UnitOfWorkValueHolder.java:161) > > org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiate(UnitOfWorkValueHolder.java:230) > > org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83) > > org.eclipse.persistence.indirection.IndirectMap.buildDelegate(IndirectMap.java:110) > > org.eclipse.persistence.indirection.IndirectMap.getDelegate(IndirectMap.java:316) > > org.eclipse.persistence.indirection.IndirectMap.containsKey(IndirectMap.java:165) > > > > _____________________________________________________________ > > DSL-Preisknaller: DSL-Komplettpakete von WEB.DE schon für > > 16,99 Euro/mtl.!* Hier klicken: http://produkte.web.de/go/02/ > > > > > > > ----- > http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland > http://www.eclipse.org/eclipselink/ > EclipseLink , http://www.oracle.com/technology/products/ias/toplink/ > TopLink > Wiki: http://wiki.eclipse.org/EclipseLink EclipseLink , > http://wiki.oracle.com/page/TopLink TopLink > Forums: http://forums.oracle.com/forums/forum.jspa?forumID=48 TopLink , > http://www.nabble.com/EclipseLink-f26430.html EclipseLink > Book: http://en.wikibooks.org/wiki/Java_Persistence Java Persistence > -- > View this message in context: http://old.nabble.com/IndirectMap.containsKey-leads-to-Exception-because-DISTINCT-on-%40Lob-Field-tp26390360p26395252.html > Sent from the EclipseLink - Users mailing list archive at Nabble.com. > > _______________________________________________ > eclipselink-users mailing list > eclipselink-users@xxxxxxxxxxx > https://dev.eclipse.org/mailman/listinfo/eclipselink-users > _____________________________________________________________ DSL-Preisknaller: DSL-Komplettpakete von WEB.DE schon für 16,99 Euro/mtl.!* Hier klicken: http://produkte.web.de/go/02/ ]]> Wed, 18 Nov 2009 10:21:35 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03738.html hansharz_eclipselink@xxxxxxx (Hans Harz) [eclipselink-users] EclipseLink 1.1.3: object persisted is not considered registered at commit time http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03737.html I am using the EclipseLink 1.1.3, specifically the eclipselink-1.1.3.v20091002-r5404.zip distribution. I have a disconnected set of new and existing objects that I want to reattach to a clear()ed persistence manager via persist() or merge() as appropriate,... I am using the EclipseLink 1.1.3, specifically the eclipselink-1.1.3.v20091002-r5404.zip distribution. I have a disconnected set of new and existing objects that I want to reattach to a clear()ed persistence manager via persist() or merge() as appropriate, and then commit(). Basically, we have our own simple JPA-API-based unit of work implementation which tracks changes to disconnected objects and then reattaches and commits those objects at an commit time. This methodology has worked fine in the past for similar situations, but today I'm hitting a problem where a new object which was persist()ed is being flagged as unpersisted in discoverAndPersistUnregisteredNewObjects() during commit(). java.lang.IllegalStateException: During synchronization a new object was found through a relationship that was not marked cascade PERSIST: [toString() representation of my entity]. Thread [btpool0-3] (Suspended (exception IllegalStateException)) RepeatableWriteUnitOfWork(UnitOfWorkImpl).discoverAndPersistUnregisteredNewObjects(Object, boolean, Map, Map, Map) line: 4010 OneToOneMapping(ObjectReferenceMapping).cascadeDiscoverAndPersistUnregisteredNewObjects(Object, Map, Map, Map, UnitOfWorkImpl) line: 743 ObjectBuilder.cascadeDiscoverAndPersistUnregisteredNewObjects(Object, Map, Map, Map, UnitOfWorkImpl) line: 1511 RepeatableWriteUnitOfWork(UnitOfWorkImpl).discoverAndPersistUnregisteredNewObjects(Object, boolean, Map, Map, Map) line: 4013 RepeatableWriteUnitOfWork.discoverUnregisteredNewObjects(Map, Map, Map, Map) line: 206 RepeatableWriteUnitOfWork(UnitOfWorkImpl).calculateChanges(Map, UnitOfWorkChangeSet, boolean) line: 628 RepeatableWriteUnitOfWork(UnitOfWorkImpl).commitToDatabaseWithChangeSet(boolean) line: 1387 RepeatableWriteUnitOfWork.commitRootUnitOfWork() line: 181 RepeatableWriteUnitOfWork(UnitOfWorkImpl).commitAndResume() line: 1060 EntityTransactionImpl.commitInternal() line: 84 EntityTransactionImpl.commit() line: 63 This is the behavior I am seeing. When I call persist() with this specific object instance and trace through the code to RepeatableWriteUnitOfWork(UnitOfWorkImpl).checkIfAlreadyRegistered, I see that a copy of the object is already considered registered, although not the specific instance I'm working with. [id instance values shown from the eclipse debugger] Argument: dataEntity = com.gvea.applications.cis.entity.jpa.JpaReceiptSource (id=2510) RepeatableWriteUnitOfWork(UnitOfWorkImpl).checkIfAlreadyRegistered(Object, ClassDescriptor) line: 765 RepeatableWriteUnitOfWork(UnitOfWorkImpl).registerNewObjectForPersist(Object, Map) line: 4039 EntityManagerImpl.persist(Object) line: 255 if (hasNewObjects()) { registeredObject = getNewObjectsOriginalToClone().get(object); Values after checking getNewObjectsOriginalToClone() map: this = org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork (id=2859) object = com.gvea.applications.cis.entity.jpa.JpaReceiptSource (id=2510) registeredObject = com.gvea.applications.cis.entity.jpa.JpaReceiptSource (id=2868) As you can see, the copy (id=2868) is detected as registered, not the original object being persisted. But then when I go to commit(), I get the above IllegalStateException for (id=2510) since the code appears to only check getCloneMapping() and not getNewObjectsOriginalToClone() like the persist method does. [stack trace above] if (!isObjectRegistered(object)) { [...] } else { // It is new but not referenced by a cascade persist mapping, throw an error. throw new IllegalStateException(ExceptionLocalization.buildMessage("new_object_found_during_commit", new Object[]{object})); } this = org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork (id=2859) object = com.gvea.applications.cis.entity.jpa.JpaReceiptSource (id=2510) ]]> Tue, 17 Nov 2009 22:51:41 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03737.html mkienenb@xxxxxxx (Mike Kienenberger) Re: [eclipselink-users] IndirectMap.containsKey leads to Exception because DISTINCT on @Lob-Field http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03736.html ----- http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland http://www.eclipse.org/eclipselink/ EclipseLink , http://www.oracle.com/technology/products/ias/toplink/ TopLink Wiki: http://wiki.eclipse.org/EclipseLink EclipseLink , http:/... The distinct is used because you are using batch reading on the query. If you do not set batch reading on the query then you will not have the issue. Batch reading uses a distinct to avoid fetching duplicate data. You can disable the usage of the distinct by setting dontUseDistinct() on the original batch query. But then you will be selecting duplicate potentially. You could also try moving the Lob to another table, or use a fetch group (LAZY) on the Lob to avoid selecting it by default. We could probably try to auto-detect a Lob field in the descriptor and not add the distinct, so you could log a bug for that. Hans Harz-2 wrote: > > Hi all, > > I encountered a problem in our application. Maybe some of you can help me. > > Using > - EclipseLink 1.1.3 > - Given a class A with a @Lob Field String stringValue; > - Given class B with > @ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.REMOVE}) > @MapKey(name = "field") > private Map<AType, A> As; > > When I call As.containsKey(someAType) on the lazy loaded map > Then a Query with a DISTINCT is created. > SELECT DISTINCT ...,t0.stringValue,... > this leads to the following exception on oracle databases (and we made a > test with DB2 and it also fails) > ORA-00932: inconsistent datatypes: expected - got CLOB > > This is because DISTINCT queries are not allowed on BLOB or CLOB fields. > Is this expected behavior? > Did we miss a restriction of eclipselink? > Is there a way to not generate the query without DISTINCT? > > In toplink we never had this problem, so it seems that toplink did not > generate the DISTINCT. > > Here is the Stack Trace. > > regards, > Hans > > org.eclipse.persistence.exceptions.DatabaseException: Internal Exception: > java.sql.SQLException: ORA-00932: inconsistent datatypes: expected - got > CLOB Error Code: 932 Call: SELECT DISTINCT t1.ID, t1.EXPLICITVERSION, > t1.STRINGVALUE, t1.UUID, ..... > org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:332) > org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:667) > org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:512) > org.eclipse.persistence.sessions.server.ServerSession.executeCall(ServerSession.java:536) > org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:205) > org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:191) > org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:262) > org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:599) > org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:2518) > org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRows(ExpressionQueryMechanism.java:2476) > org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:481) > org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:928) > org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:664) > org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:889) > org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:458) > org.eclipse.persistence.internal.sessions.AbstractSession.internalExecuteQuery(AbstractSession.java:2244) > org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1181) > org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1165) > org.eclipse.persistence.mappings.ManyToManyMapping.extractResultFromBatchQuery(ManyToManyMapping.java:231) > org.eclipse.persistence.internal.indirection.BatchValueHolder.instantiate(BatchValueHolder.java:58) > org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:71) > org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83) > org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiateImpl(UnitOfWorkValueHolder.java:161) > org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiate(UnitOfWorkValueHolder.java:230) > org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83) > org.eclipse.persistence.indirection.IndirectMap.buildDelegate(IndirectMap.java:110) > org.eclipse.persistence.indirection.IndirectMap.getDelegate(IndirectMap.java:316) > org.eclipse.persistence.indirection.IndirectMap.containsKey(IndirectMap.java:165) > > _____________________________________________________________ > DSL-Preisknaller: DSL-Komplettpakete von WEB.DE schon fÃr > 16,99 Euro/mtl.!* Hier klicken: http://produkte.web.de/go/02/ > > ----- http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland http://www.eclipse.org/eclipselink/ EclipseLink , http://www.oracle.com/technology/products/ias/toplink/ TopLink Wiki: http://wiki.eclipse.org/EclipseLink EclipseLink , http://wiki.oracle.com/page/TopLink TopLink Forums: http://forums.oracle.com/forums/forum.jspa?forumID=48 TopLink , http://www.nabble.com/EclipseLink-f26430.html EclipseLink Book: http://en.wikibooks.org/wiki/Java_Persistence Java Persistence -- View this message in context: http://old.nabble.com/IndirectMap.containsKey-leads-to-Exception-because-DISTINCT-on-%40Lob-Field-tp26390360p26395252.html Sent from the EclipseLink - Users mailing list archive at Nabble.com. ]]> Tue, 17 Nov 2009 18:41:49 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03736.html jamesssss@xxxxxxx (James Sutherland) [eclipselink-users] Re: IndirectMap.containsKey leads to Exception because DISTINCT, on @Lob-Field (Reinhard Girstenbrei) http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03735.html I get filter criteria from smartgwt, which is a gwt frontend. I need ejbql because it sends filtering criterias in a Map&lt;String,String&gt;. I don't want to use an unecessary string parser, simply put criteria text into the sql. For a test I make a simple que... Hi Hans,
Oracle Database Server does not allow to use the DISTINCT clause if there is a select list item of data type LOB.
You are using the batch reading which generates queries including a DISTINCT clause.
Now, as you have an attributed mapped to a LOB you run into this problem.
Your can resolve this problem by not using batch reading.

If you have access to "My Oracle Support" (formerly known as Metalink) you have access to the following enhancement request:

Bug 6646443 - ALLOW *BATCH* *READING* OF *LOB* COLUMNS IN ONETOMANY AND MANYTOMANY RELATIONSHIPS

I have not found an enhancement request for such feature on bugzilla yet.

You can open a new SR if you have a valid support contract to vote for this enhancement request or open an enhancement request at bugzilla.
https://bugs.eclipse.org/bugs/
Classification: RT
Product: EclipseLink
Component: Foundation

Greetings,
Reinhard

eclipselink-users-request@xxxxxxxxxxx wrote: 
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Today's Topics:

   1. Postgres arrays (Mike Traum)
   2. Re: Postgres arrays (Mike Traum)
   3. ReadAllQuery fetch all (Martin Janda)
   4. IndirectMap.containsKey leads to Exception because DISTINCT
      on @Lob-Field (Hans Harz)
   5. Re: ReadAllQuery fetch all (Tom Ware)
   6. Re: how can I reference a foreign key in ejbql	where
      condition? (James Sutherland)
   7. Re: How eclipselink handles Sequences? (James Sutherland)


----------------------------------------------------------------------

Message: 1
Date: Mon, 16 Nov 2009 09:31:00 -0800
From: Mike Traum <Mike.Traum@xxxxxxxx>
Subject: [eclipselink-users] Postgres arrays
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <4B018C54.502@xxxxxxxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi,
I'm trying to get a mapping for postgres arrays working. I'm using a Converter and thus far (without a lot of testing), inserting an array seems to work fine. But, when reading that array, eclipselink (1.2) throws the following exception before we even get to the Converter:
java.lang.ClassCastException: [D cannot be cast to [Ljava.lang.Object;
at org.eclipse.persistence.mappings.structures.ObjectRelationalDataTypeDescriptor.buildArrayObjectFromArray(ObjectRelationalDataTypeDescriptor.java:326)
...

The problem seems to be that eclipselink is attempting to cast java.sql.Array.getArray() to Object[], but postgres returns an array of primitives. This seems like an eclipselink bug, no? Any idea for a workaround?

Thanks,
Mike



------------------------------

Message: 2
Date: Mon, 16 Nov 2009 13:30:31 -0800
From: Mike Traum <Mike.Traum@xxxxxxxx>
Subject: [eclipselink-users] Re: Postgres arrays
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <4B01C477.1090207@xxxxxxxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I seem to have worked out my issues. I upgraded the jdbc driver from postgresql-8.2-506.jdbc3.jar to postgresql-8.4-701.jdbc4.jar and postgres now returns the boxed types instead of the primitive arrays.

mike

Mike Traum wrote:
Hi,
I'm trying to get a mapping for postgres arrays working. I'm using a Converter and thus far (without a lot of testing), inserting an array seems to work fine. But, when reading that array, eclipselink (1.2) throws the following exception before we even get to the Converter:
java.lang.ClassCastException: [D cannot be cast to [Ljava.lang.Object;
at org.eclipse.persistence.mappings.structures.ObjectRelationalDataTypeDescriptor.buildArrayObjectFromArray(ObjectRelationalDataTypeDescriptor.java:326) 

...

The problem seems to be that eclipselink is attempting to cast java.sql.Array.getArray() to Object[], but postgres returns an array of primitives. This seems like an eclipselink bug, no? Any idea for a workaround?

Thanks,
Mike




------------------------------

Message: 3
Date: Mon, 16 Nov 2009 23:02:08 +0100
From: Martin Janda <jandam@xxxxxxxxxx>
Subject: [eclipselink-users] ReadAllQuery fetch all
To: EclipseLink Users <eclipselink-users@xxxxxxxxxxx>
Message-ID: <5B79C16E-9C64-4786-B33B-4A5CD86B6E61@xxxxxxxxxx>
Content-Type: text/plain;	charset=us-ascii;	format=flowed;	delsp=yes

Hello,
can you help me? please. I have Entity with lazy mappings. I need to read all Entity attributes Eager&Lazy trough ReadAllQuery (ScrollableCursor) and detach them. I need to use Entities after closing EM and EMF. So they can no longer fetch lazy mappings.
I need to work with selected Entities from JTable (needs lazy) in another context (needs all attributes including lazy mappings).
Is there any way how to do it in EclipseLink 1.1.3 Java SE, I prefer annotations or direct methods in EM/EMF/UOW.
Thank you very much.
Martin

PS Sorry for my english


------------------------------

Message: 4
Date: Tue, 17 Nov 2009 14:58:09 +0100
From: Hans Harz <hansharz_eclipselink@xxxxxx>
Subject: [eclipselink-users] IndirectMap.containsKey leads to
	Exception because DISTINCT on @Lob-Field
To: eclipselink-users@xxxxxxxxxxx
Message-ID: <1852227376@xxxxxx>
Content-Type: text/plain; charset=iso-8859-15

Hi all,

I encountered a problem in our application. Maybe some of you can help me.

Using - EclipseLink 1.1.3
- Given a class A with a @Lob Field String stringValue;
- Given class B with @ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.REMOVE})
@MapKey(name = "field")
private Map<AType, A> As;

When I call As.containsKey(someAType) on the lazy loaded map Then a Query with a DISTINCT is created.
SELECT DISTINCT ...,t0.stringValue,...
this leads to the following exception on oracle databases (and we made a test with DB2 and it also fails)
ORA-00932: inconsistent datatypes: expected - got CLOB

This is because DISTINCT queries are not allowed on BLOB or CLOB fields. Is this expected behavior?
Did we miss a restriction of eclipselink? Is there a way to not generate the query without DISTINCT?

In toplink we never had this problem, so it seems that toplink did not generate the DISTINCT.

Here is the Stack Trace.

regards,
Hans

org.eclipse.persistence.exceptions.DatabaseException: Internal Exception: java.sql.SQLException: ORA-00932: inconsistent datatypes: expected - got CLOB Error Code: 932 Call: SELECT DISTINCT t1.ID, t1.EXPLICITVERSION, t1.STRINGVALUE, t1.UUID, .....
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:332) org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:667) org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:512) org.eclipse.persistence.sessions.server.ServerSession.executeCall(ServerSession.java:536) org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:205) org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:191) org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:262) org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:599) org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:2518) org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRows(ExpressionQueryMechanism.java:2476) org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:481) org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:928) org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:664) org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:889) org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:458) org.eclipse.persistence.internal.sessions.AbstractSession.internalExecuteQuery(AbstractSession.java:2244) org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1181) org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1165) org.eclipse.persistence.mappings.ManyToManyMapping.extractResultFromBatchQuery(ManyToManyMapping.java:231) org.eclipse.persistence.internal.indirection.BatchValueHolder.instantiate(BatchValueHolder.java:58) org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:71) org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83) org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiateImpl(UnitOfWorkValueHolder.java:161) org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiate(UnitOfWorkValueHolder.java:230) org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83) org.eclipse.persistence.indirection.IndirectMap.buildDelegate(IndirectMap.java:110) org.eclipse.persistence.indirection.IndirectMap.getDelegate(IndirectMap.java:316) org.eclipse.persistence.indirection.IndirectMap.containsKey(IndirectMap.java:165)

_____________________________________________________________
DSL-Preisknaller: DSL-Komplettpakete von WEB.DE schon für 16,99 Euro/mtl.!* Hier klicken: http://produkte.web.de/go/02/



------------------------------

Message: 5
Date: Tue, 17 Nov 2009 09:09:44 -0500
From: Tom Ware <tom.ware@xxxxxxxxxx>
Subject: Re: [eclipselink-users] ReadAllQuery fetch all
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <4B02AEA8.5020103@xxxxxxxxxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi Martin,

If you are using JPQL, JPQL allows you to specify fetch joins that will cause relationships to be automatically loaded. Have you tried that?

If you are using EclipseLink expressions, there is an addJoinedAttribute method you can use on your query.

-Tom

Martin Janda wrote:
Hello,
can you help me? please. I have Entity with lazy mappings. I need to read all Entity attributes Eager&Lazy trough ReadAllQuery (ScrollableCursor) and detach them. I need to use Entities after closing EM and EMF. So they can no longer fetch lazy mappings.
I need to work with selected Entities from JTable (needs lazy) in another context (needs all attributes including lazy mappings).
Is there any way how to do it in EclipseLink 1.1.3 Java SE, I prefer annotations or direct methods in EM/EMF/UOW.
Thank you very much.
Martin

PS Sorry for my english
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Message: 6
Date: Tue, 17 Nov 2009 06:38:39 -0800 (PST)
From: James Sutherland <jamesssss@xxxxxxxxx>
Subject: Re: [eclipselink-users] how can I reference a foreign key in
	ejbql	where condition?
To: eclipselink-users@xxxxxxxxxxx
Message-ID: <26391063.post@xxxxxxxxxxxxxxx>
Content-Type: text/plain; charset=us-ascii


Why are you using a ReadAllQuery, if you are using JPA and JPQL?  Just create
a JPA Query,

Query query = em.createQuery("Select Object(entity) from ChairImpl entity
where  entity.institute=:institute");
query.setParameter("institute", new Integer(10));
List result = query.getResultList();

If you need to use a ReadAllQuery with EJBQL then you cannot use
addArgumentValue(), as it seems to have issues, you will need to execute it
as a parametrized query.

i.e.
ReadAllQuery query = new ReadAllQuery(ChairImpl.getClass());
query.setEJBQLString("Select Object(entity) from ChairImpl entity where entity.institute=?1");
query.addArgument("1");
EntityManager em = this.getEntityManager();
Query query = JpaHelper.createQuery(query, em);
query.setParameter("1", new Integer(10));
List result = query.getResultList();


zamek42 wrote:
hello James, 

thx for response.

James Sutherland wrote:
Are you using JPA?  EJBQL/JPQL is normally used from JPA using the JPA
Query interface.

For using EJBQL/JPQL with an EclipseLink ReadAllQuery you need to set the
argument names and values.

i.e.
query.setEJBQLString("Select OBJECT(sg) from sg sg where sg.foreignField
= ?1");
query.addArgument("1");
query.addArgumentValue(id);


I get filter criteria from smartgwt, which is a gwt frontend. I need ejbql
because it sends filtering criterias in a Map<String,String>. I don't want
to use an unecessary string parser, simply put criteria text into the sql.
For a test I make a simple query:

ReadAllQuery query = new ReadAllQuery(ChairImpl.getClass());
query.setEJBQLString("Select Object(entity) from ChairImpl entity where entity.institute=?1");
query.addArgument("1");
query.addArgumentValue(new Integer(10));
EntityManager em = this.getEntityManager();
List result = JpaHelper.createQuery(query, em).getResultList();

this throws an error:
java.lang.IllegalStateException: Query argument 1 not found in the list of
parameters provided during query execution.

ChairImpl has an attribute named institute:
   @ManyToOne
    @JoinColumn(nullable=false)
    public InstituteImpl getInstitute() {
        return institute;
    }

    public void setInstitute(InstituteImpl institute) {
        this.institute = institute;
    }

What do I mistake?

Perhaps JpaHelper.createQuery is unecessary? How can I use readAllQuery
from glassfish directly?

thx Zamek



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]]> Tue, 17 Nov 2009 17:35:08 GMT http://dev.eclipse.org/mhonarc/lists/eclipselink-users/msg03735.html reinhard.girstenbrei@xxxxxxx (Reinhard Girstenbrei)