Hello.
If I understand you correctly, you are asking how the user
(a) can tell if they're using the network driver or embedded driver and
The DatabaseMetadata of a connection gives you the driver name, product
name, version, etc. Would this give the information you're looking for?
(b) can tell if the exception came from the client or the server
I don't think it's reasonable to want the SQLState to be different; I
think that many users very much want them to be the *same* across the
drivers, for the same error. Kathey and Dan have made it pretty clear
they should be the same.
No no.
I ask you what "you" want to distinguish in this issue.
There seems to be concept of "error of embedded" and "error of network" in your
article.
However, it is ambigous what is the difference between them.
At least , I couldn't read what they exactly are.
Best regards.
/*
Tomohito Nakayama
[EMAIL PROTECTED]
[EMAIL PROTECTED]
[EMAIL PROTECTED]
Naka
http://www5.ocn.ne.jp/~tomohito/TopPage.html
*/
----- Original Message -----
From: "David W. Van Couvering" <[EMAIL PROTECTED]>
To: "Derby Development" <[email protected]>
Sent: Wednesday, October 12, 2005 2:52 AM
Subject: Re: Question about error messages (Re: Discussions on Wiki ...)
If I understand you correctly, you are asking how the user
(a) can tell if they're using the network driver or embedded driver and
The DatabaseMetadata of a connection gives you the driver name, product
name, version, etc. Would this give the information you're looking for?
(b) can tell if the exception came from the client or the server
I don't think it's reasonable to want the SQLState to be different; I
think that many users very much want them to be the *same* across the
drivers, for the same error. Kathey and Dan have made it pretty clear
they should be the same.
And we have also agreed that using the error code or the implementing
class of SQLException is not valid because neither of these are public
(and therefore stable) interfaces.
In the network client, when you construct a SQLException, the full
diagnostics of the exception are written to the configured log:
if (logWriter != null) {
logWriter.traceDiagnosable(this);
if the exception is from the server, then the trace diagnostics contain
information that makes it clear the exception is from the server:
if ( sqlca != null )
printWriter.println(header + " DERBY SQLCA from server");
printWriter.println(header + " SqlCode = " +
sqlca.getSqlCode());
printWriter.println(header + " SqlErrd = " +
Utils.getStringFromInts(sqlca.getSqlErrd()));
printWriter.println(header + " SqlErrmc = " +
sqlca.getSqlErrmc());
printWriter.println(header + " SqlErrmcTokens = " +
Utils.getStringFromStrings(sqlca.getSqlErrmcTokens()));
printWriter.println(header + " SqlErrp = " +
sqlca.getSqlErrp());
printWriter.println(header + " SqlState = " +
sqlca.getSqlState());
printWriter.println(header + " SqlWarn = " + new
String(sqlca.getSqlWarn()));
It seems to me this should give the user the information they need, right?
Thanks,
David
TomohitoNakayama wrote:
Hello.
This is question around next .
http://wiki.apache.org/db-derby/JDBC_error_messages_and_SQL_States
And it seems have something a lot to do with DERBY-254 .
http://issues.apache.org/jira/browse/DERBY-254
As in DERBY-254, there seems to be concept of "error of embedded" and
"error of network" .
However, it is not clear what does distinguish one from another .
* Whether user uses network or embedded driver distinguishes ? * Whether
exception happens in network or embedded implementation distinguishes ?
Best regards .
/*
Tomohito Nakayama
[EMAIL PROTECTED]
[EMAIL PROTECTED]
[EMAIL PROTECTED]
Naka
http://www5.ocn.ne.jp/~tomohito/TopPage.html
*/
----- Original Message ----- From: "David W. Van Couvering"
<[EMAIL PROTECTED]>
To: "Derby Development" <[email protected]>
Sent: Saturday, October 08, 2005 5:44 AM
Subject: Re: Discussions on Wiki - WAS Re: SQL functions, procedures and
PSM - a possible approach
Hi, Tomohito. It would be great if you could summarize your concerns
in email and we can continue our discussion on the list.
If it would help, I'm also more than open for you and I to have an IRC
conversation, log it, and send the log out to the list. We do seem to
be a bit stuck :)
David
TomohitoNakayama wrote:
Hello.
I understand. Sorry for disturbing .
I had come to feel difficulties in discussing at Wiki.
Should I ask David my question in mailing list once more ?
Best regards.
/*
Tomohito Nakayama
[EMAIL PROTECTED]
[EMAIL PROTECTED]
[EMAIL PROTECTED]
Naka
http://www5.ocn.ne.jp/~tomohito/TopPage.html
*/
----- Original Message ----- From: "David W. Van Couvering"
<[EMAIL PROTECTED]>
To: "Derby Development" <[email protected]>
Sent: Friday, October 07, 2005 12:40 PM
Subject: Re: Discussions on Wiki - WAS Re: SQL functions, procedures
and PSM - a possible approach
I'm getting a little concerned, it feels a little quiet over there
in the corner with Tomohito and I, and I was about to propose with
Tomohito that we move it back to the list.
David
Daniel John Debrunner wrote:
David W. Van Couvering wrote:
This sounds great, Dan! Is this a good candidate for putting up
on the
Wiki site as a proposal?
Is anyone else concerned by the movement of discussion to the wiki for
the common code stuff? The Apache way is for discussions to occur
on the
mailing lists. It seems to me that the wiki is a great way to
summarize
such discussions, but not to hold them. A wiki page related to a
discussion can provide a very useful single overview, something that
does get lost in mailings as the discussion spreads out.
Dan.
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