Обсуждение: JDBC4 with SQLXML and postgresql-8.4-702.jdbc4.jar
Hi,
I'm having trouble of inserting an SQLXML in my Postgresql 8.4 database :
I'm having trouble of inserting an SQLXML in my Postgresql 8.4 database :
java.lang.ClassCastException: org.postgresql.jdbc4.Jdbc4SQLXML cannot be cast to [B
at org.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRowBuffer(AbstractJdbc2ResultSet.java:1729)
at org.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRow(AbstractJdbc2ResultSet.java:1291)
when i use that :
SQLXML sqlxml = con.createSQLXML();
DOMResult domResult=sqlxml.setResult(DOMResult.class)
domResult.setNode(xmldocumentDOM);
stmt.setSQLXML(1, sqlxml);
stmt.execute();
Do you have an idea, why ?
Thank you very much for your futur help :)
On Tue, 19 Oct 2010, Michael musset wrote: > java.lang.ClassCastException: org.postgresql.jdbc4.Jdbc4SQLXML cannot be > cast to [B > atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRowBuffer(AbstractJdbc2Re > sultSet.java:1729) > atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRow(AbstractJdbc2ResultSe > t.java:1291) > > SQLXML sqlxml = con.createSQLXML(); > DOMResult domResult=sqlxml.setResult(DOMResult.class) > domResult.setNode(xmldocumentDOM); > > stmt.setSQLXML(1, sqlxml); > stmt.execute(); > Your sample code and stacktrace don't seem to match, but I see what the problem is. The updatable ResultSet code isn't prepared for handling a SQLXML object. It's slightly tricky to fix because the code in question is in a JDBC2 class while SQLXML is JDBC4 only. I'll look into it. Kris Jurka
---------- Forwarded message ----------
From: Michael musset <mickamusset@gmail.com>
Date: Thu, Oct 21, 2010 at 10:26 AM
Subject: Re: [JDBC] JDBC4 with SQLXML and postgresql-8.4-702.jdbc4.jar
To: Kris Jurka <books@ejurka.com>
Thank you very much, and about that :
Yes the bug appeared when I do an updaterow() to the resultset.
i've decided to migrate to postgresql 9.
will it work with JDBC4 Postgresql Driver, Version 9.0-801 ?
thanks,
From: Michael musset <mickamusset@gmail.com>
Date: Thu, Oct 21, 2010 at 10:26 AM
Subject: Re: [JDBC] JDBC4 with SQLXML and postgresql-8.4-702.jdbc4.jar
To: Kris Jurka <books@ejurka.com>
Thank you very much, and about that :
Yes the bug appeared when I do an updaterow() to the resultset.
i've decided to migrate to postgresql 9.
will it work with JDBC4 Postgresql Driver, Version 9.0-801 ?
thanks,
On Thu, Oct 21, 2010 at 10:21 AM, Kris Jurka <books@ejurka.com> wrote:
On Tue, 19 Oct 2010, Michael musset wrote:java.lang.ClassCastException: org.postgresql.jdbc4.Jdbc4SQLXML cannot beatorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRowBuffer(AbstractJdbc2Re
cast to [B
sultSet.java:1729)
atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRow(AbstractJdbc2ResultSe
t.java:1291)
SQLXML sqlxml = con.createSQLXML();
DOMResult domResult=sqlxml.setResult(DOMResult.class)
domResult.setNode(xmldocumentDOM);
stmt.setSQLXML(1, sqlxml);
stmt.execute();
Your sample code and stacktrace don't seem to match, but I see what the problem is. The updatable ResultSet code isn't prepared for handling a SQLXML object. It's slightly tricky to fix because the code in question is in a JDBC2 class while SQLXML is JDBC4 only. I'll look into it.
Kris Jurka
--
Michael Musset,
Tel: 06 26 06 29 89
Michael Musset,
Tel: 06 26 06 29 89
--
Michael Musset,
Tel: 06 26 06 29 89
So, what I have to do ?
i've tried to convert my xml into String but it still doesn't work :
ret.updateString("DATA", myXmlString);
the error appear when i did a updaterow in my resultset
the error is:
org.postgresql.util.PSQLException: ERROR: column "DATA" is of type xml but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
how can i do that ?
thanks for the help,
--
Michael Musset,
Tel: 06 26 06 29 89
i've tried to convert my xml into String but it still doesn't work :
ret.updateString("DATA", myXmlString);
the error appear when i did a updaterow in my resultset
the error is:
org.postgresql.util.PSQLException: ERROR: column "DATA" is of type xml but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
how can i do that ?
thanks for the help,
On Thu, Oct 21, 2010 at 10:27 AM, Kris Jurka <jurka@ejurka.com> wrote:
No it won't work with the 9.0 JDBC driver either. The same problem exists in both versions.
Kris
On 10/21/2010 1:26 AM, Michael musset wrote:Thank you very much, and about that :<http://jdbc.postgresql.org/download/postgresql-9.0-801.jdbc4.jar> ?
Yes the bug appeared when I do an updaterow() to the resultset.
i've decided to migrate to postgresql 9.
will it work with JDBC4 Postgresql Driver, Version 9.0-801<mailto:books@ejurka.com>> wrote:
On Tue, 19 Oct 2010, Michael musset wrote:
java.lang.ClassCastException: org.postgresql.jdbc4.Jdbc4SQLXML
cannot be
cast to [B
atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRowBuffer(AbstractJdbc2Re
sultSet.java:1729)
atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRow(AbstractJdbc2ResultSe
t.java:1291)
SQLXML sqlxml = con.createSQLXML();
DOMResult domResult=sqlxml.setResult(DOMResult.class)
domResult.setNode(xmldocumentDOM);
stmt.setSQLXML(1, sqlxml);
stmt.execute();
Your sample code and stacktrace don't seem to match, but I see what
the problem is. The updatable ResultSet code isn't prepared for
handling a SQLXML object. It's slightly tricky to fix because the
code in question is in a JDBC2 class while SQLXML is JDBC4 only.
I'll look into it.
Kris Jurka
--
Michael Musset,
Tel: 06 26 06 29 89
--
Michael Musset,
Tel: 06 26 06 29 89
On 23/10/2010 11:53 AM, Michael musset wrote:
> So, what I have to do ?
>
> i've tried to convert my xml into String but it still doesn't work :
>
> ret.updateString("DATA", myXmlString);
>
>
> the error appear when i did a updaterow in my resultset
>
>
> the error is:
>
> org.postgresql.util.PSQLException: ERROR: column "DATA" is of type xml
> but expression is of type character varying
> Hint: You will need to rewrite or cast the expression.
It's one of those irritating areas where PostgreSQL's overzealous
refusal to cast ::text or ::varchar for interpretation as literals of
another type bites you.
You need to use updateObject("DATA", java.sql.Types.SQLXML) so the JDBC
driver knows what type to specify.
--
Craig Ringer
Tech-related writing at http://soapyfrogs.blogspot.com/
Thanks,
sorry for my poor level in Java/JDBC :
but how do you use that ?
i've tried :
ret.updateObject("DATA",writer.toString() ,java.sql.Types.SQLXML);
but it's still doesn't work :
ERROR: column "DATA" is of type xml but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
neither this one :
ret.updateObject("DATA",(java.sql.Types.SQLXML)writer.toString());
sorry,
sorry for my poor level in Java/JDBC :
but how do you use that ?
i've tried :
ret.updateObject("DATA",writer.toString() ,java.sql.Types.SQLXML);
but it's still doesn't work :
ERROR: column "DATA" is of type xml but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
neither this one :
ret.updateObject("DATA",(java.sql.Types.SQLXML)writer.toString());
sorry,
On Sat, Oct 23, 2010 at 6:09 AM, Craig Ringer <craig@postnewspapers.com.au> wrote:
On 23/10/2010 11:53 AM, Michael musset wrote:It's one of those irritating areas where PostgreSQL's overzealous refusal to cast ::text or ::varchar for interpretation as literals of another type bites you.So, what I have to do ?
i've tried to convert my xml into String but it still doesn't work :
ret.updateString("DATA", myXmlString);
the error appear when i did a updaterow in my resultset
the error is:
org.postgresql.util.PSQLException: ERROR: column "DATA" is of type xml
but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
You need to use updateObject("DATA", java.sql.Types.SQLXML) so the JDBC driver knows what type to specify.
--
Craig Ringer
Tech-related writing at http://soapyfrogs.blogspot.com/
Ok, this one is a little bit stupid :
ret.updateObject("DATA",(java.sql.Types.SQLXML)writer.toString());
by the way, i'm using :
/postgresql-9.0-801.jdbc4.jar ( i thought that it is better to use postgresql 9 )
thx,
--
Michael Musset,
Tel: 06 26 06 29 89
ret.updateObject("DATA",(java.sql.Types.SQLXML)writer.toString());
by the way, i'm using :
/postgresql-9.0-801.jdbc4.jar ( i thought that it is better to use postgresql 9 )
thx,
On Sat, Oct 23, 2010 at 6:20 AM, Michael musset <mickamusset@gmail.com> wrote:
Thanks,
sorry for my poor level in Java/JDBC :
but how do you use that ?
i've tried :
ret.updateObject("DATA",writer.toString() ,java.sql.Types.SQLXML);
but it's still doesn't work :neither this one :
ERROR: column "DATA" is of type xml but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
ret.updateObject("DATA",(java.sql.Types.SQLXML)writer.toString());
sorry,On Sat, Oct 23, 2010 at 6:09 AM, Craig Ringer <craig@postnewspapers.com.au> wrote:On 23/10/2010 11:53 AM, Michael musset wrote:It's one of those irritating areas where PostgreSQL's overzealous refusal to cast ::text or ::varchar for interpretation as literals of another type bites you.So, what I have to do ?
i've tried to convert my xml into String but it still doesn't work :
ret.updateString("DATA", myXmlString);
the error appear when i did a updaterow in my resultset
the error is:
org.postgresql.util.PSQLException: ERROR: column "DATA" is of type xml
but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
You need to use updateObject("DATA", java.sql.Types.SQLXML) so the JDBC driver knows what type to specify.
--
Craig Ringer
Tech-related writing at http://soapyfrogs.blogspot.com/
--
Michael Musset,
Tel: 06 26 06 29 89
On Sat, 23 Oct 2010, Craig Ringer wrote:
> You need to use updateObject("DATA", java.sql.Types.SQLXML) so the JDBC
> driver knows what type to specify.
>
That's not the API for update object. There isn't a type parameter, the
variant with a third int parameter is a scale for numeric data.
Kris Jurka
On Thu, 21 Oct 2010, Kris Jurka wrote: > On Tue, 19 Oct 2010, Michael musset wrote: > >> java.lang.ClassCastException: org.postgresql.jdbc4.Jdbc4SQLXML cannot be >> cast to [B >> atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRowBuffer(AbstractJdbc2Re >> sultSet.java:1729) >> atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRow(AbstractJdbc2ResultSe >> t.java:1291) >> >> SQLXML sqlxml = con.createSQLXML(); >> DOMResult domResult=sqlxml.setResult(DOMResult.class) >> domResult.setNode(xmldocumentDOM); >> >> stmt.setSQLXML(1, sqlxml); >> stmt.execute(); >> > > Your sample code and stacktrace don't seem to match, but I see what the > problem is. The updatable ResultSet code isn't prepared for handling a > SQLXML object. It's slightly tricky to fix because the code in question is > in a JDBC2 class while SQLXML is JDBC4 only. I'll look into it. > I've put a fix for this into CVS. I've uploaded a new jar file here: http://ejurka.com/pgsql/jars/xml/ Kris Jurka
THANK YOU !
--
Michael Musset,
Tel: 06 26 06 29 89
On Sat, Oct 23, 2010 at 8:25 AM, Kris Jurka <books@ejurka.com> wrote:
I've put a fix for this into CVS. I've uploaded a new jar file here:
On Thu, 21 Oct 2010, Kris Jurka wrote:On Tue, 19 Oct 2010, Michael musset wrote:java.lang.ClassCastException: org.postgresql.jdbc4.Jdbc4SQLXML cannot be
cast to [B
atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRowBuffer(AbstractJdbc2Re
sultSet.java:1729)
atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRow(AbstractJdbc2ResultSe
t.java:1291)
SQLXML sqlxml = con.createSQLXML();
DOMResult domResult=sqlxml.setResult(DOMResult.class)
domResult.setNode(xmldocumentDOM);
stmt.setSQLXML(1, sqlxml);
stmt.execute();
Your sample code and stacktrace don't seem to match, but I see what the problem is. The updatable ResultSet code isn't prepared for handling a SQLXML object. It's slightly tricky to fix because the code in question is in a JDBC2 class while SQLXML is JDBC4 only. I'll look into it.
http://ejurka.com/pgsql/jars/xml/
Kris Jurka
--
Michael Musset,
Tel: 06 26 06 29 89
One thing that i regret about SQLXML object, is that you can't do at the same time :
1) get an SQLXML Object from a resultset
2) modify It
3) update the SQLXML Object to the resultset
4) updaterow
I've tried this :
but it doesn't work.
If someone is interesting about getting data and updating data in xml.
my method is to get a string from my xml.
parse it
modify the data
and :
SQLXML sqlxml = con.createSQLXML();
DOMResult domResult=sqlxml.setResult(DOMResult.class)
domResult.setNode(xmldocumentDOM);
stmt.setSQLXML(1, sqlxml);
stmt.execute();
It's work .... but it's not beautiful ......
anyway, thank for the help !
--
Michael Musset,
Tel: 06 26 06 29 89
1) get an SQLXML Object from a resultset
2) modify It
3) update the SQLXML Object to the resultset
4) updaterow
I've tried this :
// retrieve an SQLXML object from the ResultSet:
SQLXML sqlxml = resultSet.getSQLXML(1); // 1 is the column index
// obtain DOM tree from SQLXML object:
DOMSource source = sqlxml.getSource(DOMSource.class);
// create document object from DOMSource:
Document document = (Document) source.getNode();
modify the document here
resultSet.setSQLXML(1,sqlxml );
resultSet.updaterow();
SQLXML sqlxml = resultSet.getSQLXML(1); // 1 is the column index
// obtain DOM tree from SQLXML object:
DOMSource source = sqlxml.getSource(DOMSource.class);
// create document object from DOMSource:
Document document = (Document) source.getNode();
modify the document here
resultSet.setSQLXML(1,sqlxml );
resultSet.updaterow();
but it doesn't work.
If someone is interesting about getting data and updating data in xml.
my method is to get a string from my xml.
parse it
modify the data
and :
SQLXML sqlxml = con.createSQLXML();
DOMResult domResult=sqlxml.setResult(DOMResult.class)
domResult.setNode(xmldocumentDOM);
stmt.setSQLXML(1, sqlxml);
stmt.execute();
It's work .... but it's not beautiful ......
anyway, thank for the help !
On Sat, Oct 23, 2010 at 8:25 AM, Kris Jurka <books@ejurka.com> wrote:
I've put a fix for this into CVS. I've uploaded a new jar file here:
On Thu, 21 Oct 2010, Kris Jurka wrote:On Tue, 19 Oct 2010, Michael musset wrote:java.lang.ClassCastException: org.postgresql.jdbc4.Jdbc4SQLXML cannot be
cast to [B
atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRowBuffer(AbstractJdbc2Re
sultSet.java:1729)
atorg.postgresql.jdbc2.AbstractJdbc2ResultSet.updateRow(AbstractJdbc2ResultSe
t.java:1291)
SQLXML sqlxml = con.createSQLXML();
DOMResult domResult=sqlxml.setResult(DOMResult.class)
domResult.setNode(xmldocumentDOM);
stmt.setSQLXML(1, sqlxml);
stmt.execute();
Your sample code and stacktrace don't seem to match, but I see what the problem is. The updatable ResultSet code isn't prepared for handling a SQLXML object. It's slightly tricky to fix because the code in question is in a JDBC2 class while SQLXML is JDBC4 only. I'll look into it.
http://ejurka.com/pgsql/jars/xml/
Kris Jurka
--
Michael Musset,
Tel: 06 26 06 29 89