thanks a lot for the time and effort you put into answering and actually already fixing these issues!

Concerning “id and version of a content instance as the primary key and rely on
references to the id”:
I was afraid that this is the expected and correct behaviour
Do you have any suggestions how to reference an id where the version does not matter using some kind of foreign key constraint?
I can not reference a specific version since it may be removed but the reference is still valid as long as *any* version exists … a bit tricky I am afraid.

>> Query timeouts: statement.setQueryTimeout(15/*seconds*/); is not working
>
> I can’t reproduce this problem. What version of H2 do you use? Maybe
> an old version of H2 is in the classpath?

I use version 1.1.103 (2008-11-07) and there is only this one version in the classpath, I double checked.
If I set timeouts to 15 (seconds, I tried 15000 as well guessing it could be milliseconds) I get this exception cause:
“Caused by: org.h2.jdbc.JdbcSQLException: Statement was canceled or the session timed out [90051-103]”

>
> > Order By: … issues if used in a subquery in the main queries where clause: the query parser just wont compile the query.
>
> I can’t reproduce the problem, but I remember there were problems so
> time ago. How does the query look like exactly?

I’m sorry I can not give you a simpler and “cleaner” query, but this one is generated from out parser and the offending order by is commented out:

SELECT
filter.rownr,filter.id,filter.ver,filter.created_by ,filter.ID prop_0_0
,filter.VER prop_0_1
,filter.ID prop_1_0
,(SELECT sub.FTEXT1024 FROM FX_CONTENT_DATA sub WHERE sub.id=filter.id AND sub.ver=filter.ver AND TPROP=101 AND (sub.lang=1 OR sub.ismldef=true) ORDER BY sub.ismldef LIMIT 1 ) prop_2_0
,concat(filter.xpathPref,(SELECT sub.XPATHMULT FROM FX_CONTENT_DATA sub WHERE sub.id=filter.id AND sub.ver=filter.ver AND TPROP=101 AND (sub.lang=1 OR sub.ismldef=true) ORDER BY sub.ismldef LIMIT 1 )) propX_2_1
,filter.prop_3_0
,concat(filter.xpathPref,(SELECT sub.XPATHMULT FROM FX_CONTENT_DATA sub WHERE sub.id=filter.id AND sub.ver=filter.ver AND TPROP=105 AND (sub.lang=1 OR sub.ismldef=true) ORDER BY sub.ismldef LIMIT 1 )) propX_3_1
FROM (SELECT SET(@rownr,@rownr+1) rownr, * FROM (select filter.id,filter.ver,filter.created_by,concat(concat(concat(concat(concat(t.name,’[@pk='),filter.id),'.'),filter.ver),']‘) xpathPref ,(SELECT sub.FINT FROM FX_CONTENT_DATA sub WHERE sub.id=filter.id AND sub.ver=filter.ver AND TPROP=105 AND (sub.lang=1 OR sub.ismldef=true) /*ORDER BY sub.ismldef LIMIT 1*/ ) prop_3_0
,null
FROM FXS_SEARCHCACHE_MEMORY filter, FXS_TYPEDEF t WHERE search_id=410 AND filter.tdef=t.id AND filter.TDEF=6 ORDER BY 5 desc)) filter ORDER BY 1

>
> > webfrontend … remove a database called flexive all databases that begin with the term flexive and exist in the same directory are removed as well
>
> I can’t reproduce this problem with the current version.

With version 1.1.103 and removing “flexive” and having flexiveTest and flexiveConfiguration the command line you print in the webfrontend is
java -cp h2.jar org.h2.tools.DeleteDbFiles -dir “~” -db “flexive”

and I get this result which removes “flexive” and “flexiveTest”:

Processed: /home/mplesser/flexiveTest.lobs.db/245.t879.lob.db
Processed: /home/mplesser/flexiveTest.lobs.db/158.t879.lob.db
…..
Processed: /home/mplesser/flexiveTest.lobs.db/98.t1077.lob.db
Processed: /home/mplesser/flexive.index.db
Processed: /home/mplesser/flexive.6.log.db
Processed: /home/mplesser/flexive.data.db
Processed: /home/mplesser/flexive.lobs.db/83.t205.lob.db
…
Processed: /home/mplesser/flexive.lobs.db/120.t205.lob.db
Processed: /home/mplesser/flexive.lobs.db

Please let me know if I can further assist you in looking at these issues.
I could help you to run and setup the flexive testcases to reproduce this easily.

Cheers and thanks,
Markus

(this is a crosspost from the H2 mailinglist)

Those two features are now implemented and will be available in the next release (1.1.105 and newer).

> Query timeouts: statement.setQueryTimeout(15/*seconds*/); is not working

I can’t reproduce this problem. What version of H2 do you use? Maybe
an old version of H2 is in the classpath?

> Order By: … issues if used in a subquery in the main queries where clause: the query parser just wont compile the query.

I can’t reproduce the problem, but I remember there were problems so
time ago. How does the query look like exactly?

> webfrontend … remove a database called flexive all databases that begin with the term flexive and exist in the same directory are removed as well

I can’t reproduce this problem with the current version.

This is expected behavior, you would also get an exception on PostgreSQL, Derby, and HSQLDB (I didn’t test other databases).

drop table parent;
drop table child;
create table parent(a int, b int, primary key(a, b));
insert into parent values(1, 1);
insert into parent values(1, 2);
create table child(c int, foreign key(c) references parent(a));

H2: Unique index or primary key violation: CONSTRAINT_INDEX_8 ON
PUBLIC.PARENT(A)
PostgreSQL: ERROR: there is no unique constraint matching given keys
for referenced table “parent” 42830/0
Derby: Constraint ‘SQL081208162825440′ is invalid: there is no unique
or primary key constraint on table ‘”SA”.”PARENT”‘ that matches the
number and types of the columns in the foreign key.
HSQLDB: Primary or unique constraint required on main table