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Posted to ojb-user@db.apache.org by Ge...@lex-com.net on 2003/08/11 10:24:43 UTC

Strange UnitTest Failure with DB2

Hi all,

We are currently evaluating OJB for use with our DB2 databases. Trying to 
run the JUnit tests we observe a rather strange behavior with the testcase 
org.apache.ojb.broker.OneToManyTest.testDeleteWithRemovalAwareCollection():

When running all tests (ant junit-no-compile), the testcase fails with a 
failed assertion (expeced <1> but was <0>). However, when running just 
OneToManyTest alone, the tests succeeds. 

We tried to track the problem down by logging the SQL with P6Spy and found 
that in the failure case, OJB for some reason creates a new entry in 
KATEGORIEN when it just should delete two ARTIKEL entries. It then moves 
the ARTIKELs to this new KATEGORIEN entry (by changing the Kategorie_Nr 
field) and then deletes the two ARTIKELs. The result is that there are 
zero ARTIKELS in the original KATEGORIEN entry (hence the testcase 
failure) and one remaining of three with the mysterious new KATEGORIEN 
entry. This does not happen when running OneToManyTest alone.

I am appending the SQL logs below. The SQL statements are condensed for 
better readability and I added the Java code lines that triggererd the 
SQL. 

If someone could help shed a light on this, I would be most grateful. (The 
broker tests run fine when using HSQLDB).

Gerhard Grosse


System Info:
JDK 1.3.1_08
OJB 1.0RC4 (with otm classes removed to compile with 1.3)
Client: Windows XP
Server: DB2 7.2 Linux

SQL Log of OneToManyTest.testDeleteWithRemovalAwareCollection() when 
running all tests:

        ProductGroupWithRemovalAwareCollection pg = new 
ProductGroupWithRemovalAwareCollection();
        pg.setGroupName("nice group");
        Identity pgId = new Identity(pg, broker);
        Article a = new Article();
        a.setArticleName("a");
        Article b = new Article();
        b.setArticleName("b");
        Article c = new Article();
        c.setArticleName("c");
        pg.add(a);
        pg.add(b);
        pg.add(c);
        broker.store(pg);

1060348532390|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr = 
'0' 
1060348532390|0|1|statement|INSERT INTO Kategorien 
(Kategorie_Nr,KategorieName) VALUES ('0','nice group') 
1060348532390|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr = '88894' 

1060348532390|0|1|statement|INSERT INTO Artikel VALUES 
('88894','a','0','0','','0.0','0','0','0','0') 
1060348532390|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr = '88895' 

1060348532390|0|1|statement|INSERT INTO Artikel VALUES 
('88895','b','0','0','','0.0','0','0','0','0') 
1060348532390|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr = '88896' 

1060348532406| |1|statement|INSERT INTO Artikel VALUES 
('88896','c','0','0','','0.0','0','0','0','0') 

        broker.clearCache();
        pg = (ProductGroupWithRemovalAwareCollection) 
broker.getObjectByIdentity(pgId);
        assertEquals(3,pg.getAllArticles().size());

1060348535406|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr = 
'0' 
1060348535406|0|1|statement|SELECT FROM Artikel A0 WHERE A0.Kategorie_Nr = 
 '0' 
1060348535406|0|1|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr = 
'0' 
1060348535406|0|1|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr = '0' 


        pg.getAllArticles().remove(c);
        pg.getAllArticles().remove(0);
        broker.store(pg);

1060348539406|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr = '88894' 

1060348539406|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr = 
'0' 
1060348539406|0|1|statement|SELECT FROM Artikel A0 WHERE A0.Kategorie_Nr = 
 '25'  ORDER BY 4 DESC
1060348539406|0|1|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr = 
'25'  ORDER BY 6 DESC
1060348539406|0|1|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr = 
'25'  ORDER BY 5 DESC
1060348539421| |1|statement|UPDATE Kategorien SET KategorieName='nice 
group' WHERE Kategorie_Nr = '0' 
1060348539421|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr = '88895' 

1060348539421|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr = 
'25' 
1060348539421|0|1|statement|INSERT INTO Kategorien VALUES ('25','nice 
group','') 
1060348539421|0|1|statement|UPDATE Artikel SET Kategorie_Nr='25' WHERE 
Artikel_Nr = '88895' 
1060348539421|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr = '88896' 

1060348539421|0|1|statement|UPDATE Kategorien SET KategorieName='nice 
group',Beschreibung='' WHERE Kategorie_Nr = '25' 
1060348539437|0|1|statement|UPDATE Artikel SET Kategorie_Nr='25' WHERE 
Artikel_Nr = '88896' 
1060348539437|0|1|statement|DELETE FROM Artikel WHERE Artikel_Nr = '88896' 

1060348539437|0|1|statement|DELETE FROM Artikel WHERE Artikel_Nr = '88894' 


        broker.clearCache();
        pg = (ProductGroupWithRemovalAwareCollection) 
broker.getObjectByIdentity(pgId);
        assertEquals(1,pg.getAllArticles().size());    // failure!

1060348544437|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr = 
'0' 
1060348544437|0|1|statement|SELECT FROM Artikel A0 WHERE A0.Kategorie_Nr = 
 '0' 
1060348544437|0|1|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr = 
'0' 
1060348544437|0|1|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr = '0' 


===========================
SQL Log of OneToManyTest.testDeleteWithRemovalAwareCollection() when 
running all tests:

        ProductGroupWithRemovalAwareCollection pg = new 
ProductGroupWithRemovalAwareCollection();
        pg.setGroupName("nice group");
        Identity pgId = new Identity(pg, broker);
        Article a = new Article();
        a.setArticleName("a");
        Article b = new Article();
        b.setArticleName("b");
        Article c = new Article();
        c.setArticleName("c");
        pg.add(a);
        pg.add(b);
        pg.add(c);
        broker.store(pg);

1060350474953|0|0|statement|SELECT FROM Kategorien WHERE Kategorie_Nr = 
'0' 
1060350474968| |0|statement|INSERT INTO Kategorien 
(Kategorie_Nr,KategorieName) VALUES ('0','nice group') 
1060350475031|0|1|statement|SELECT 
A0.MAX_KEY,A0.TABLENAME,A0.GRAB_SIZE,A0.VERSION,A0.FIELDNAME FROM 
OJB_HL_SEQ A0 WHERE (A0.TABLENAME LIKE  ? ) AND A0.FIELDNAME LIKE  ? 
|SELECT A0.MAX_KEY,A0.TABLENAME,A0.GRAB_SIZE,A0.VERSION,A0.FIELDNAME FROM 
OJB_HL_SEQ A0 WHERE (A0.TABLENAME LIKE  'SEQ_Artikel' ) AND A0.FIELDNAME 
LIKE  'Artikel_Nr' 

1060350475046|0|0|statement||SELECT MAX(Artikel_Nr) FROM Artikel
1060350475046|0|0|statement||SELECT MAX(Artikel_Nr) FROM BOOKS
1060350475046|0|0|statement||SELECT MAX(Artikel_Nr) FROM CDS
1060350475062|0|0|statement||SELECT MAX(Artikel_Nr) FROM BOOKS
1060350475062|0|0|statement||SELECT MAX(Artikel_Nr) FROM CDS
1060350475062|0|1|statement|SELECT 
MAX_KEY,TABLENAME,GRAB_SIZE,VERSION,FIELDNAME FROM OJB_HL_SEQ WHERE 
TABLENAME = ?  AND FIELDNAME = ? |SELECT 
MAX_KEY,TABLENAME,GRAB_SIZE,VERSION,FIELDNAME FROM OJB_HL_SEQ WHERE 
TABLENAME = 'SEQ_Artikel'  AND FIELDNAME = 'Artikel_Nr' 
1060350475062|0|1|statement|INSERT INTO OJB_HL_SEQ 
(TABLENAME,FIELDNAME,MAX_KEY,GRAB_SIZE,VERSION) VALUES (?,?,?,?,?) |INSERT 
INTO OJB_HL_SEQ (TABLENAME,FIELDNAME,MAX_KEY,GRAB_SIZE,VERSION) VALUES 
('SEQ_Artikel','Artikel_Nr','222','20','1') 
1060350475062|0|1|commit||

1060350475078| |0|statement|SELECT FROM Artikel WHERE Artikel_Nr = '203' 
1060350475078|0|0|statement|INSERT INTO Artikel VALUES 
('203','a','0','0','','0.0','0','0','0','0') 
1060350475078|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr = '204' 
1060350475093|0|0|statement|INSERT INTO Artikel VALUES 
('204','b','0','0','','0.0','0','0','0','0') 
1060350475093|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr = '205' 
1060350475093|0|0|statement|INSERT INTO Artikel VALUES 
('205','c','0','0','','0.0','0','0','0','0') 

        broker.clearCache();
        pg = (ProductGroupWithRemovalAwareCollection) 
broker.getObjectByIdentity(pgId);
        assertEquals(3,pg.getAllArticles().size());

1060350478093|0|0|statement|SELECT Kategorien WHERE Kategorie_Nr = '0' 
1060350478109|0|0|statement|SELECT FROM Artikel A0 WHERE A0.Kategorie_Nr = 
 '0' 
1060350478109|0|0|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr = 
'0' 
1060350478125|0|0|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr = '0' 


        pg.getAllArticles().remove(c);
        pg.getAllArticles().remove(0);
        broker.store(pg);

1060350482125|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr = '203' 
1060350482125|0|0|statement|UPDATE Kategorien SET KategorieName='nice 
group' WHERE Kategorie_Nr = '0' 
1060350482125|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr = '204' 
1060350482140|0|0|statement|UPDATE Artikel SET Kategorie_Nr='0' WHERE 
Artikel_Nr = '204' 
1060350482140|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr = '205' 
1060350482140|0|0|statement|UPDATE Artikel SET Kategorie_Nr='0' WHERE 
Artikel_Nr = '205' 
1060350482156| |0|statement|DELETE FROM Artikel WHERE Artikel_Nr = '205' 
1060350482156|0|0|statement|DELETE FROM Artikel WHERE Artikel_Nr = '203' 

        broker.clearCache();
        pg = (ProductGroupWithRemovalAwareCollection) 
broker.getObjectByIdentity(pgId);
        assertEquals(1,pg.getAllArticles().size());    // ok

1060350487156|0|0|statement|SELECT FROM Kategorien WHERE Kategorie_Nr = 
'0' 
1060350487156|0|0|statement|SELECT FROM Artikel A0 WHERE A0.Kategorie_Nr = 
 '0' 
1060350487156|0|0|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr = 
'0' 
1060350487156|0|0|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr = '0' 


Re: Strange UnitTest Failure with DB2

Posted by Armin Waibel <ar...@code-au-lait.de>.
hmm strange, I checked in a modified version
of this test case.
Add tx-demarcation for object operations
(this is necessary in non-managed environments).
Give it a try ;-)

regards,
Armin

----- Original Message -----
From: <Ge...@lex-com.net>
To: <oj...@db.apache.org>
Sent: Monday, August 11, 2003 10:24 AM
Subject: Strange UnitTest Failure with DB2


> Hi all,
>
> We are currently evaluating OJB for use with our DB2 databases. Trying
to
> run the JUnit tests we observe a rather strange behavior with the
testcase
>
org.apache.ojb.broker.OneToManyTest.testDeleteWithRemovalAwareCollection
():
>
> When running all tests (ant junit-no-compile), the testcase fails with
a
> failed assertion (expeced <1> but was <0>). However, when running just
> OneToManyTest alone, the tests succeeds.
>
> We tried to track the problem down by logging the SQL with P6Spy and
found
> that in the failure case, OJB for some reason creates a new entry in
> KATEGORIEN when it just should delete two ARTIKEL entries. It then
moves
> the ARTIKELs to this new KATEGORIEN entry (by changing the
Kategorie_Nr
> field) and then deletes the two ARTIKELs. The result is that there are
> zero ARTIKELS in the original KATEGORIEN entry (hence the testcase
> failure) and one remaining of three with the mysterious new KATEGORIEN
> entry. This does not happen when running OneToManyTest alone.
>
> I am appending the SQL logs below. The SQL statements are condensed
for
> better readability and I added the Java code lines that triggererd the
> SQL.
>
> If someone could help shed a light on this, I would be most grateful.
(The
> broker tests run fine when using HSQLDB).
>
> Gerhard Grosse
>
>
> System Info:
> JDK 1.3.1_08
> OJB 1.0RC4 (with otm classes removed to compile with 1.3)
> Client: Windows XP
> Server: DB2 7.2 Linux
>
> SQL Log of OneToManyTest.testDeleteWithRemovalAwareCollection() when
> running all tests:
>
>         ProductGroupWithRemovalAwareCollection pg = new
> ProductGroupWithRemovalAwareCollection();
>         pg.setGroupName("nice group");
>         Identity pgId = new Identity(pg, broker);
>         Article a = new Article();
>         a.setArticleName("a");
>         Article b = new Article();
>         b.setArticleName("b");
>         Article c = new Article();
>         c.setArticleName("c");
>         pg.add(a);
>         pg.add(b);
>         pg.add(c);
>         broker.store(pg);
>
> 1060348532390|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr
=
> '0'
> 1060348532390|0|1|statement|INSERT INTO Kategorien
> (Kategorie_Nr,KategorieName) VALUES ('0','nice group')
> 1060348532390|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'88894'
>
> 1060348532390|0|1|statement|INSERT INTO Artikel VALUES
> ('88894','a','0','0','','0.0','0','0','0','0')
> 1060348532390|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'88895'
>
> 1060348532390|0|1|statement|INSERT INTO Artikel VALUES
> ('88895','b','0','0','','0.0','0','0','0','0')
> 1060348532390|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'88896'
>
> 1060348532406| |1|statement|INSERT INTO Artikel VALUES
> ('88896','c','0','0','','0.0','0','0','0','0')
>
>         broker.clearCache();
>         pg = (ProductGroupWithRemovalAwareCollection)
> broker.getObjectByIdentity(pgId);
>         assertEquals(3,pg.getAllArticles().size());
>
> 1060348535406|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr
=
> '0'
> 1060348535406|0|1|statement|SELECT FROM Artikel A0 WHERE
A0.Kategorie_Nr =
>  '0'
> 1060348535406|0|1|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr
=
> '0'
> 1060348535406|0|1|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr =
'0'
>
>
>         pg.getAllArticles().remove(c);
>         pg.getAllArticles().remove(0);
>         broker.store(pg);
>
> 1060348539406|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'88894'
>
> 1060348539406|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr
=
> '0'
> 1060348539406|0|1|statement|SELECT FROM Artikel A0 WHERE
A0.Kategorie_Nr =
>  '25'  ORDER BY 4 DESC
> 1060348539406|0|1|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr
=
> '25'  ORDER BY 6 DESC
> 1060348539406|0|1|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr =
> '25'  ORDER BY 5 DESC
> 1060348539421| |1|statement|UPDATE Kategorien SET KategorieName='nice
> group' WHERE Kategorie_Nr = '0'
> 1060348539421|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'88895'
>
> 1060348539421|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr
=
> '25'
> 1060348539421|0|1|statement|INSERT INTO Kategorien VALUES ('25','nice
> group','')
> 1060348539421|0|1|statement|UPDATE Artikel SET Kategorie_Nr='25' WHERE
> Artikel_Nr = '88895'
> 1060348539421|0|1|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'88896'
>
> 1060348539421|0|1|statement|UPDATE Kategorien SET KategorieName='nice
> group',Beschreibung='' WHERE Kategorie_Nr = '25'
> 1060348539437|0|1|statement|UPDATE Artikel SET Kategorie_Nr='25' WHERE
> Artikel_Nr = '88896'
> 1060348539437|0|1|statement|DELETE FROM Artikel WHERE Artikel_Nr =
'88896'
>
> 1060348539437|0|1|statement|DELETE FROM Artikel WHERE Artikel_Nr =
'88894'
>
>
>         broker.clearCache();
>         pg = (ProductGroupWithRemovalAwareCollection)
> broker.getObjectByIdentity(pgId);
>         assertEquals(1,pg.getAllArticles().size());    // failure!
>
> 1060348544437|0|1|statement|SELECT FROM Kategorien WHERE Kategorie_Nr
=
> '0'
> 1060348544437|0|1|statement|SELECT FROM Artikel A0 WHERE
A0.Kategorie_Nr =
>  '0'
> 1060348544437|0|1|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr
=
> '0'
> 1060348544437|0|1|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr =
'0'
>
>
> ===========================
> SQL Log of OneToManyTest.testDeleteWithRemovalAwareCollection() when
> running all tests:
>
>         ProductGroupWithRemovalAwareCollection pg = new
> ProductGroupWithRemovalAwareCollection();
>         pg.setGroupName("nice group");
>         Identity pgId = new Identity(pg, broker);
>         Article a = new Article();
>         a.setArticleName("a");
>         Article b = new Article();
>         b.setArticleName("b");
>         Article c = new Article();
>         c.setArticleName("c");
>         pg.add(a);
>         pg.add(b);
>         pg.add(c);
>         broker.store(pg);
>
> 1060350474953|0|0|statement|SELECT FROM Kategorien WHERE Kategorie_Nr
=
> '0'
> 1060350474968| |0|statement|INSERT INTO Kategorien
> (Kategorie_Nr,KategorieName) VALUES ('0','nice group')
> 1060350475031|0|1|statement|SELECT
> A0.MAX_KEY,A0.TABLENAME,A0.GRAB_SIZE,A0.VERSION,A0.FIELDNAME FROM
> OJB_HL_SEQ A0 WHERE (A0.TABLENAME LIKE  ? ) AND A0.FIELDNAME LIKE  ?
> |SELECT A0.MAX_KEY,A0.TABLENAME,A0.GRAB_SIZE,A0.VERSION,A0.FIELDNAME
FROM
> OJB_HL_SEQ A0 WHERE (A0.TABLENAME LIKE  'SEQ_Artikel' ) AND
A0.FIELDNAME
> LIKE  'Artikel_Nr'
>
> 1060350475046|0|0|statement||SELECT MAX(Artikel_Nr) FROM Artikel
> 1060350475046|0|0|statement||SELECT MAX(Artikel_Nr) FROM BOOKS
> 1060350475046|0|0|statement||SELECT MAX(Artikel_Nr) FROM CDS
> 1060350475062|0|0|statement||SELECT MAX(Artikel_Nr) FROM BOOKS
> 1060350475062|0|0|statement||SELECT MAX(Artikel_Nr) FROM CDS
> 1060350475062|0|1|statement|SELECT
> MAX_KEY,TABLENAME,GRAB_SIZE,VERSION,FIELDNAME FROM OJB_HL_SEQ WHERE
> TABLENAME = ?  AND FIELDNAME = ? |SELECT
> MAX_KEY,TABLENAME,GRAB_SIZE,VERSION,FIELDNAME FROM OJB_HL_SEQ WHERE
> TABLENAME = 'SEQ_Artikel'  AND FIELDNAME = 'Artikel_Nr'
> 1060350475062|0|1|statement|INSERT INTO OJB_HL_SEQ
> (TABLENAME,FIELDNAME,MAX_KEY,GRAB_SIZE,VERSION) VALUES (?,?,?,?,?)
|INSERT
> INTO OJB_HL_SEQ (TABLENAME,FIELDNAME,MAX_KEY,GRAB_SIZE,VERSION) VALUES
> ('SEQ_Artikel','Artikel_Nr','222','20','1')
> 1060350475062|0|1|commit||
>
> 1060350475078| |0|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'203'
> 1060350475078|0|0|statement|INSERT INTO Artikel VALUES
> ('203','a','0','0','','0.0','0','0','0','0')
> 1060350475078|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'204'
> 1060350475093|0|0|statement|INSERT INTO Artikel VALUES
> ('204','b','0','0','','0.0','0','0','0','0')
> 1060350475093|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'205'
> 1060350475093|0|0|statement|INSERT INTO Artikel VALUES
> ('205','c','0','0','','0.0','0','0','0','0')
>
>         broker.clearCache();
>         pg = (ProductGroupWithRemovalAwareCollection)
> broker.getObjectByIdentity(pgId);
>         assertEquals(3,pg.getAllArticles().size());
>
> 1060350478093|0|0|statement|SELECT Kategorien WHERE Kategorie_Nr = '0'
> 1060350478109|0|0|statement|SELECT FROM Artikel A0 WHERE
A0.Kategorie_Nr =
>  '0'
> 1060350478109|0|0|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr
=
> '0'
> 1060350478125|0|0|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr =
'0'
>
>
>         pg.getAllArticles().remove(c);
>         pg.getAllArticles().remove(0);
>         broker.store(pg);
>
> 1060350482125|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'203'
> 1060350482125|0|0|statement|UPDATE Kategorien SET KategorieName='nice
> group' WHERE Kategorie_Nr = '0'
> 1060350482125|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'204'
> 1060350482140|0|0|statement|UPDATE Artikel SET Kategorie_Nr='0' WHERE
> Artikel_Nr = '204'
> 1060350482140|0|0|statement|SELECT FROM Artikel WHERE Artikel_Nr =
'205'
> 1060350482140|0|0|statement|UPDATE Artikel SET Kategorie_Nr='0' WHERE
> Artikel_Nr = '205'
> 1060350482156| |0|statement|DELETE FROM Artikel WHERE Artikel_Nr =
'205'
> 1060350482156|0|0|statement|DELETE FROM Artikel WHERE Artikel_Nr =
'203'
>
>         broker.clearCache();
>         pg = (ProductGroupWithRemovalAwareCollection)
> broker.getObjectByIdentity(pgId);
>         assertEquals(1,pg.getAllArticles().size());    // ok
>
> 1060350487156|0|0|statement|SELECT FROM Kategorien WHERE Kategorie_Nr
=
> '0'
> 1060350487156|0|0|statement|SELECT FROM Artikel A0 WHERE
A0.Kategorie_Nr =
>  '0'
> 1060350487156|0|0|statement|SELECT FROM BOOKS A0 WHERE A0.Kategorie_Nr
=
> '0'
> 1060350487156|0|0|statement|SELECT FROM CDS A0 WHERE A0.Kategorie_Nr =
'0'
>
>



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