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1
flymirco
Custom module installation problem

  • 2009/7/14 2:11

  • flymirco

  • Just popping in

  • Posts: 42

  • Since: 2006/9/20


Hi all,

I am using XOOPS 2.3.3 on a local XAMPP web server (version 1.7).
I am developing a custom module but I got an error when I try to install it.
The error is _MD_AM_SQL_NOT_VALID:
Quote:
is not a valid SQL!

I find this error coming from file modules\system\admin\modulesadmin\modulesadmin.php at line 197

Starting the debug I can see that the table are created and, after module error dropped. Why I have this problem? The sql is correct and the file is in UTF-8 charset. Can you help me to the right point?

Where I can find a module development tutorial for XOOPS 2.3.3 and the changes between it and the old 2.0.18 release?

Thanks in advance.

flymirco
2
iHackCode
Re: Custom module installation problem

is there a specific line in the sql file that is causing the issue.? (it should show you the query that is causing the issue)
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3
flymirco
Re: Custom module installation problem

  • 2009/7/14 2:32

  • flymirco

  • Just popping in

  • Posts: 42

  • Since: 2006/9/20


Hi Bandit-X,

no sql lines gives errors. I tried all the table creation and there are no errors. Only one doubt, I set the Engine to INNODB for all the tables in the script.
4
iHackCode
Re: Custom module installation problem

i want to make sure, in the sqlFile the sql commands are without the prefix, correct?
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5
flymirco
Re: Custom module installation problem

  • 2009/7/14 7:47

  • flymirco

  • Just popping in

  • Posts: 42

  • Since: 2006/9/20


Hi Bandit-X,

you are right, no prefix in sql file. That's seems to be the problem. I don't know why, but it can't add the prefix or some errors come when he tried to add.

flymirco
6
culex
Re: Custom module installation problem

  • 2009/7/14 9:15

  • culex

  • Module Developer

  • Posts: 711

  • Since: 2004/9/23


I was just reading up on Xampp server and it seemed innodb is only enabled automaticlly after 1.7.1, check my.cnf to see if innodb settings are unmarked.
Programming is like sex:
One mistake and you have to support it for the rest of your life.
7
flymirco
Re: Custom module installation problem

  • 2009/7/14 9:27

  • flymirco

  • Just popping in

  • Posts: 42

  • Since: 2006/9/20


I found it the problem: it was the comment at the end of all CREATE TABLE statement that causes the module installation fails.

It also doesn't support a CREATE INDEX statement. To do that you have to put the index creation in the CREATE TABLE statement as a UNIQUE KEY ().

flymirco
8
flymirco
Re: Custom module installation problem

  • 2009/7/14 15:16

  • flymirco

  • Just popping in

  • Posts: 42

  • Since: 2006/9/20


Hi culex,

you have seen what has come after I solved the problem.
Now I can't install my module due to foreign key creation problem. This is the error I got:
Quote:
CREATE TABLE svy_domande ( id INT NOT NULL AUTO_INCREMENT , riga INT NULL , attributi_id INT NOT NULL , valore INT NULL , alternativa SMALLINT (4) NULL , PRIMARY KEY (id), INDEX fk_domande_attributi1 (attributi_id), CONSTRAINT fk_attr1 FOREIGN KEY (attributi_id) REFERENCES svy_attributi(id) ON DELETE SET NULL ON UPDATE CASCADE ) ENGINE = INNODB
Error number: 1005
Error message: Can't create table 'unipolls.xup_svy_domande' (errno: 150)

I setted up correctly XAMPP by changing my.cnf file. Now I think that problem arise from tables prefix during foreign key creation.

Is there a way to tell to the query processor to add prefix also on REFERENCE ()?

flymirco
9
culex
Re: Custom module installation problem

  • 2009/7/14 16:49

  • culex

  • Module Developer

  • Posts: 711

  • Since: 2004/9/23


Phew I wish this was about MyISAM wich is more my alley. Just pointed out where to look for information about your problem. Now this is said I of course read a little more about hte INNODB engine and from the user comment on this page (the example with error 150)

http://dev.mysql.com/doc/refman/5.1/en/innodb-foreign-key-constraints.html

I think, and correct me please if I am wrong, that you're missing an index svy_attributi(id) before FOREIGN KEY (attributi_id) ?
Programming is like sex:
One mistake and you have to support it for the rest of your life.
10
ghia
Re: Custom module installation problem

  • 2009/7/14 18:29

  • ghia

  • Community Support Member

  • Posts: 4953

  • Since: 2008/7/3 1


Quote:
It also doesn't support a CREATE INDEX statement.
No, but ALTER TABLE is supported.
Could you not rephrase your SQL statements to use this?
eg
ALTER TABLE mytable ADD INDEX myindex (col1, col2);
ALTER TABLE mytable ADD CONSTRAINT myconstraint PRIMARY INDEX (col1, col2);
etc.
Quote:
Is there a way to tell to the query processor to add prefix also on REFERENCE
()?
Try by adding this in function prefixQuery of /class/database/sqlutility.php
$matches[0] = preg_replace($pattern, $replace, $query);
// start hack ghia
$pattern3 = "/
(.*REFERENCES)(s)+([`]?)([^`s]+)\3(s)+/siU";
if (preg_match($pattern3, $query))
{
$matches[0] = preg_replace($pattern3, $replace, $matches[0]);
}
// end hack ghia
return $matches;

Limitation: it works only for 1 table reference per statement, so if you have multiple foreign keys, you have to add them one by one by separate alter table statements.
Quote:
I think, and correct me please if I am wrong, that you're missing an index svy_attributi(id) before FOREIGN KEY (attributi_id) ?

It seems good to me. I think the only problem he has, is that the statement executes without prefixing the referenced table and then fails for an unknown table.
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