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Date: Tue, 20 Sep 2011 23:40:01 +0200
From: "Dag H. Wanvik" <dag.wanvik@oracle.com>
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To: Derby Discussion <derby-user@db.apache.org>
Subject: Re: derby can not reload procedure class? can not use
 ResultSet.updateRow()?
References: <tencent_04A5F14050C1317818ABED78@qq.com>
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On 9/19/2011 6:09 PM, �ױ� wrote:
> nice to contact every one,This is my first time to mail in 
> english,please forgive me.
> #1.It seems that when procedure in a class was loaded, drop and 
> reloaded, the changes of JAR file havn't take effected!

Not quite sure what you did here, but did you look at/try the system 
procedure REPLACE_JAR?

http://db.apache.org/derby/docs/10.8/tools/ttoolsjarload1003120.html

It seems you remove the jar before (re)installing it, that should work 
as well, though..

Dag


> eg script:
> drop PROCEDURE test;
> call sqlj.remove_jar('admin.creaateClient', 0);
> call sqlj.install_jar('export\testproc.jar','admin.creaateClient', 0);
> CREATE PROCEDURE test( IN orgID INTEGER,
> IN groupID INTEGER,
> IN name varchar(60),
> IN faceFileID bigint,
> IN recStatus smallint,
> IN creator bigint
> )
> PARAMETER STYLE JAVA READS SQL DATA LANGUAGE JAVA
> EXTERNAL NAME 'com.bana.commonServer.procedure.Client_info.creaateClient';
> call test(1,2,'name',4,5,6);
> -- code ended
> when I change and re-complie the JAR ( a little changes of 
> logic,nothing of the other changeed), I repeat the script but the 
> logic is the old one...��
> #2
> sql = "SELECT groupSize,seq from SEQ where seqType =101 and orgID =? 
> and groupID =? ";
> pSeq= connection.prepareStatement(sql, 
> ResultSet.TYPE_FORWARD_ONLY,ResultSet.CONCUR_UPDATABLE);
> pSeq.setInt(1, orgID);
> pSeq.setInt(2, groupID);
> System.out.println(" exe SQL��"+sql);
> rs = pSeq.executeQuery();
> if(rs.next()){
> groupSize =rs.getInt(1);
> seq = rs.getInt(2);
> System.out.println("seq:"+seq);
>
> if(seq>=groupSize){
> //returnCode[0] =4002;
> return;
> }
> System.out.println("groupSize:"+groupSize);
> rs.updateInt("seq", seq+1); /////////////not executed
> rs.updateRow();//////////////////not executed
> System.out.println("update:"+seq+1);//////////////////not executed
> the return message is:
> The exception 'java.sql.SQLException:........ ' was thrown while 
> evaluating an expression.
> I try the same code in independent java source and execute passed.I 
> feel confused ,It my first time to try derby....
> I look forward to your reply.thank you for you intention.