Обсуждение: SQLState with pg74.1jdbc3.jar

Hi all,
I'm a newbie in JDBC code.

I tried to execute a Statement.executeUpdate() method to insert a row
already present in my Postgresql DB.

With JDBC I receive a SQLException but I would like to have
more informations about the error (something like Duplicate Key
Exception).

I read that SQLException class have the getSQLState() method, but
when I call it, the result is null (the getErrorCode() return always 0).

The same if I try to generate another error (an INSERT command
without specifying all NOT NULL colums of my table).

I use pg74.1jdbc3.jar on a i686 Intel - Suse host.

Here is the code (insertCommand is intentionally a wrong command)

public int execInsert(String insertCommand) {
        Statement stateSql;
        Connection conn;

        conn = <get the Connection>;

        try {
            stateSql = conn.createStatement();
            return(stateSql.executeUpdate(insertCommand));
        }
        catch (SQLException e) {
          System.out.println("SQLException: error code = " +
e.getErrorCode());
          System.out.println("SQLException: sqlstate   = " +
e.getSQLState());
         return(-1);
       }
}

On 15/01/2004 14:50 Moreno Mauri wrote:
> Hi all,
> I'm a newbie in JDBC code.
>
> I tried to execute a Statement.executeUpdate() method to insert a row
> already present in my Postgresql DB.
>
> With JDBC I receive a SQLException but I would like to have
> more informations about the error (something like Duplicate Key
> Exception).
>
> I read that SQLException class have the getSQLState() method, but
> when I call it, the result is null (the getErrorCode() return always 0).

What version of PostgreSQL are you running? To get the error codes
requires a 7.4 server.

HTH

--
Paul Thomas
+------------------------------+---------------------------------------------+
| Thomas Micro Systems Limited | Software Solutions for the Smaller
Business |
| Computer Consultants         |
http://www.thomas-micro-systems-ltd.co.uk   |
+------------------------------+---------------------------------------------+

Hi!!

I have an example code of pg73jdbc2.jar, maybe this help you.

I have a question:

How set the pg73jdbc2.jar files for work with jsp?? (SuSE 8.1)

Dennis

-----Original Message-----
From: pgsql-jdbc-owner@postgresql.org
[mailto:pgsql-jdbc-owner@postgresql.org] On Behalf Of Moreno Mauri
Sent: Jueves, 15 de Enero de 2004 9:50
To: pgsql-jdbc@postgresql.org
Subject: [JDBC] SQLState with pg74.1jdbc3.jar

Hi all,
I'm a newbie in JDBC code.

I tried to execute a Statement.executeUpdate() method to insert a row
already present in my Postgresql DB.

With JDBC I receive a SQLException but I would like to have
more informations about the error (something like Duplicate Key
Exception).

I read that SQLException class have the getSQLState() method, but
when I call it, the result is null (the getErrorCode() return always 0).

The same if I try to generate another error (an INSERT command
without specifying all NOT NULL colums of my table).

I use pg74.1jdbc3.jar on a i686 Intel - Suse host.

Here is the code (insertCommand is intentionally a wrong command)

public int execInsert(String insertCommand) {
        Statement stateSql;
        Connection conn;

        conn = <get the Connection>;

        try {
            stateSql = conn.createStatement();
            return(stateSql.executeUpdate(insertCommand));
        }
        catch (SQLException e) {
          System.out.println("SQLException: error code = " +
e.getErrorCode());
          System.out.println("SQLException: sqlstate   = " +
e.getSQLState());
         return(-1);
       }
}


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