Обсуждение: passing parameters to function

----- Original Message -----

From: Dave Cramer

To: Srivats

Cc: pgsql-jdbc@postgresql.org

Sent: Tuesday, November 08, 2005 9:21 PM

Subject: Re: [JDBC] passing parameters to function

You would have to set them to NULL

Dave

On 8-Nov-05, at 7:31 AM, Srivats wrote:

 

Hi All,

 

Suppose I have a store proc which accepts 4 input parameters

and I do a CallableStatement.setObject( 1, "..,,," );

and execute the query .

 

 

 CallableStatement functionCall = dbCon_.prepareCall("{call test1( ?,?,?,?) }");  
  functionCall.setObject( "param1","A10001" );
  functionCall.setObject( "param2","19830529" );
  functionCall.execute();

Exception raised

 

java.sql.SQLException: No value specified for parameter 3
        at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1253)
        at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1201)
        at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:710)
        at com.mysql.jdbc.CallableStatement.execute(CallableStatement.java:520)
 

 

during runtime. Should i set the other 2 input parameters to null,

even when I dont want to pass these parameters to the SP.

In this statement call test1( ?,?,?,?), should the number of parameters be the number

of parameters which the store procedure accepts or the number of parameters that i want

to pass.  How should this be done when my SP accepts 4 parameters and i want to pass

only any two of them

 

Thks

 

PS: Looking for an early reply

 

 

 

 

 

O Srivats έγραψε στις Nov 9, 2005 :

> Hi All,
>
> Is there anyway i can get the list of parameters which the store proc accepts from the java end after i make the
prepareCall.

You might want to look at
DatabaseMetaData dbmd = con.getMetaData();
ResultSet your_funk_args = dbmd.getProcedureColumns(...);
I dont know (or looked) if it is supported by the current
7.4 pgsql jdbc.

>
> Thks
>
>   ----- Original Message -----
>   From: Dave Cramer
>   To: Srivats
>   Cc: pgsql-jdbc@postgresql.org
>   Sent: Tuesday, November 08, 2005 9:21 PM
>   Subject: Re: [JDBC] passing parameters to function
>
>
>   You would have to set them to NULL
>
>
>   Dave
>
>   On 8-Nov-05, at 7:31 AM, Srivats wrote:
>
>
>
>     Hi All,
>
>     Suppose I have a store proc which accepts 4 input parameters
>     and I do a CallableStatement.setObject( 1, "..,,," );
>     and execute the query .
>
>
>      CallableStatement functionCall = dbCon_.prepareCall("{call test1( ?,?,?,?) }");
>       functionCall.setObject( "param1","A10001" );
>       functionCall.setObject( "param2","19830529" );
>       functionCall.execute();
>
>     Exception raised
>
>     java.sql.SQLException: No value specified for parameter 3
>             at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1253)
>             at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1201)
>             at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:710)
>             at com.mysql.jdbc.CallableStatement.execute(CallableStatement.java:520)
>
>
>     during runtime. Should i set the other 2 input parameters to null,
>     even when I dont want to pass these parameters to the SP.
>     In this statement call test1( ?,?,?,?), should the number of parameters be the number
>     of parameters which the store procedure accepts or the number of parameters that i want
>     to pass.  How should this be done when my SP accepts 4 parameters and i want to pass
>     only any two of them
>
>     Thks
>
>     PS: Looking for an early reply
>
>
>
>
>
>
>
>
>

--
-Achilleus