[EMAIL PROTECTED] wrote:
Thank you all for the tips.
Before giving up using derby, I have: 1) checked for older versions. No, there
are none (in
real, I tried a fresh install of Tomcat). I double checked
$JAVA_HOME/jre/lib/ext, and
tryied including install a new version of JDK (I was using 1.5.0_04 and made a
try with
1.5.0_06 - no differences).
I tryied a simple JSP that take a connection from the pool and executed a
simple select
count(*) from some_table and error is the same.
Interesting is that I tryied Ij, and the error didn't occured.
But, Ij is not using pt_BR messages, and I suspect error is related (but then I
give up: I
could not spent more than a couple of hours without sucess searching on the net
- I searched
Google, MSN, Altavista). db.apache.org was unavaliable yesterday, and I could
not search
mailing lists.
So, without web support (even from the list), I could not defend Derby anymore
in the
project, and manager directed all development to a comercial database,
unfortunatelly.
At all, thank you... But don't forget to check what could be wrong - there is a
serious
erro/bugr in there.
Details:
- Tomcat 5.5.9 embedded in NetBeans 5.0 Beta 2
- Tomcat 5.5.7 embedded in NetBeans 4.1
- Connection obtained with 'jdbc:derby:c:/projects/biblio/database' (it's
embedded) - Plain
queries works fine (select * from some_table)
- Aggregate count throw ClassCastException (select count(*) from some_table)
Connection declaration:
<Resource auth="Container" description="Biblio" name="jdbc/Biblio"
type="javax.sql.DataSource" username="" password=""
driverClassName="org.apache.derby.jdbc.EmbeddedDriver"
url="jdbc:derby:c:/projects/biblio/database;" maxActive="10" maxIdle="2"/>
Here is stack trace:
08/12/2005 16:29:24 org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
ERROR 38000: A exceção 'java.lang.ClassCastException:
org.apache.derby.impl.sql.execute.CountAggregator' foi emitida ao avaliar uma
expressão.
at org.apache.derby.iapi.error.StandardException.newException(Unknown
Source)
at
org.apache.derby.iapi.error.StandardException.unexpectedUserException(Unknown
Source)
at
org.apache.derby.impl.sql.execute.GenericAggregator.getAggregatorInstance(Unknown
Source)
at
org.apache.derby.impl.sql.execute.GenericAggregator.initialize(Unknown Source)
...... SNIP ...
Hi Edson -
Could you help me setup a test case for this problem? It would be great
if you could provide a test case for the problem and file a JIRA entry
with the test case attached (please let me know if you can do this). It
sounds, however, that you are working to a tight timeframe so I am
willing to attempt to create a test case but need some additional
information.
I have not used NetBeans but know a bit about JSPs with Tomcat. Could
you post the information I will need to perform the test you describe as:
".. I tryied a simple JSP that take a connection from the pool and
executed a simple select count(*) from some_table and error is the same .."
Here are the things I can think of that will be very helpful:
+ Having the JSP code would be very helpful - would you post it?
+ I need to know how the connection pool was defined (what entries were
placed in server.xml, the application deployment XML file and the
web.xml file).
+ If there any other settings needed to setup the connection pool in
the Tomcat/NetBeans environment please include those also.
I have located another report of this stack trace when performing
'select count(*)' in a different server that did not seem to relate to
codesets so I am hoping that pt_BR is not required to debug this problem.
Thanks in advance
