Hello,
thanks for the answer, I follow your advice
- remove Connection argument frm the Java code
- create at the same way stored procedure and trigger
and I still got the same error
cristina
Rauf Sarwar wrote:
> Comments embedded.
>
> Cristina Bulfon wrote:
>
>>Hello,
>>
>>I am newby with Oracle and I'd like to implement a Stored Procedure
>
> or
>
>>Trigger.
>>PC is running Fedora Core 2 and Oracle 9.2.0.4
>>
>>First of all I tried to ATTACH a Java class directly to the table
>>
>>[bulfon_at_localhost ~]$ sqlplus /nolog
>>
>>SQL*Plus: Release 9.2.0.4.0 - Production on Sat Apr 16 10:22:14 2005
>>
>>Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
>>
>>SQL> connect system/<password>@InvSicr_localhost
>>Connected.
>>SQL> alter table Referente attach java class "DeleteReferente" in
>>'/home/cristina';
>>alter table Referente attach java class "DeleteReferente" in
>>'/home/cristina'
>> *
>>ERROR at line 1:
>>ORA-01735: invalid ALTER TABLE option
>>
>>it seems that my Oracle version doesn't support Java Trigger
>>
>>then create a stored procedure, following the steps below
>>
>>1) my Java code
>>
>>import java.sql.*;
>>import java.io.*;
>>import oracle.jdbc.*;
>>
>>public class DeleteReferente {
>>
>> public static void delete (Connection con, int id ) throws
>
>
> Your java procedure accepts two arguments (More about this few lines
> below). How are you going to pass a Connection object from PLSQL?
> Remove the Connection argument and do a default connection like,
>
> Connection con
> = new oracle.jdbc.OracleDriver().defaultConnection();
>
>
>>SQLException
>>{
>>
>> Statement st = con.createStatement();
>> ResultSet rs;
>> rs = st.executeQuery("select * from referente where
>
> idRef=id");
>
>> System.out.println("cancella");
>> st.close();
>> }
>>}
>>
>>2) The Java class is in my Home Dir and the path is in the CLASSPATH
>>
>>
>>3)
>>
>>javac DeleteReferente.java
>>loadjava -u system/<password>@InvSicr_localhost DeleteReferente.class
>>
>>4) Procedure
>>
>>SQL> create or replace procedure test(id NUMBER)
>> 2 as language java name
>> 3 'DeleteReferente.delete(oracle.sql.NUMBER)';
>
>
> Your java stored procedure above accepts two arguments. You are passing
> only one. See comments few lines above.
>
>
>> 4 /
>>
>>Procedure created.
>>
>>5) Trigger
>>
>>SQL> CREATE OR REPLACE TRIGGER deltrg before delete on referente for
>>each row
>> 2 call test(:old.idref)
>> 3 /
>>
>>Trigger created.
>>
>>6) Test
>>
>>SQL> delete referente where idref=4;
>>delete referente where idref=4
>> *
>>ERROR at line 1:
>>ORA-29531: no method delete in class DeleteReferente
>
>
> Java thinks you are calling an overloaded procedure which accepts only
> one argument and it cannot find it.
>
>
>>ORA-04088: error during execution of trigger 'SYSTEM.DELTRG'
>>
>>
>>Am I missing something or doing something wrong ?
>>
>>any help, hint, suggestions are very appreciated
>>
>>
>>Thanks in advance
>>
>>cristina
>
>
> Watch out for any table mutation in your java code.
>
> Regards
> /Rauf
>
Received on Sat Apr 16 2005 - 21:48:17 CDT
