From: tim.clarke at manifest.co.uk (Tim Clarke)
Date: Wed, 24 Mar 2010 16:07:41 +0000
Subject: [Pljava-dev] Function Error
In-Reply-To: 
 <8661B041D452404E8088FBD47D2443BE2532EF@NDCEXCUS703.int.asurion.com>
References: <f89282645423.4ba9eab4@gmu.edu>
	<8661B041D452404E8088FBD47D2443BE2532EF@NDCEXCUS703.int.asurion.com>
Message-ID: <4BAA38CD.1080700@manifest.co.uk>

On 24/03/10 16:01, Roberts, Jon wrote:
> I believe the problem is the classpath.  You are putting the jar in the
> public schema but your function is in the sim schema.  Try this:
>
> select sqlj.remove_jar('sim', true);
> select * from
> sqlj.install_jar('file:///D:/workspace/SimplePrediction/sim.jar','sim_ja
> r',true);
> select sqlj.set_classpath('sim', 'sim_jar');
>
> CREATE OR REPLACE FUNCTION sim.chi2cdf(double precision)
>                  RETURNS double precision
>                  AS 'simpleMonteCarlo.sim.chi2cdf'
>                  LANGUAGE java;
>
> If that isn't it, try changing the Java method to return a
> java.lang.String and then have your PostgreSQL function return a
> character varying.  That will eliminate the possibility of a signature
> problem.
>
>
> Jon
>
> -----Original Message-----
> From: pljava-dev-bounces at pgfoundry.org
> [mailto:pljava-dev-bounces at pgfoundry.org] On Behalf Of Susan M Farley
> Sent: Wednesday, March 24, 2010 10:34 AM
> To: pljava-dev at pgfoundry.org
> Subject: [Pljava-dev] Function Error
>
> I'm trying to import a function in Java, but am having problems with it.
> The java function is
>
> public static double chi2cdf (double x)
> {
>   return chi.cdf(x);
> }
>
> I copied the sim.class file to the Postgres data directory and I added
> it to Postgres with the following
> select
> sqlj.replace_jar('file:///D:/workspace/SimplePrediction/sim.jar','sim',t
> rue);
>
> SELECT sqlj.set_classpath('public', 'sim');
>
> CREATE OR REPLACE FUNCTION sim.chi2cdf(double precision)
>                  RETURNS double precision
>                  AS 'simpleMonteCarlo.sim.chi2cdf'
>                  LANGUAGE java;
>
> When I try to run it, I get the following error:
> ERROR:  Unable to find static method simpleMonteCarlo.sim.chi2cdf with
> signature (D)D
>
> I thought it was the signature of double precision, but then tried it
> with two other functions, one a float and one a int and get similar
> errors. Does anyone have any ideas?
>
> Thank you,
> Susan
>   

Or possibly the file itself - you said that you "copied the sim.class
file" - should you not have put a .jar file instead?

-- 
Tim Clarke AMBCS MIAP
IT Director
Manifest
9 Freebournes Court
Newland Street
Witham, Essex
CM8 2BL
England
 
Phone: +44 1376 503500
Direct: +44 1376 504510
Fax: +44 1376 503550
Email: tim.clarke at manifest.co.uk <mailto:tim.clarke at manifest.co.uk>
Web: http://www.manifest.co.uk
Skype: callto:tim.clarke

Manifest is the trading name of: Manifest Information Services Ltd: Registered in England Number 3401145 & The Manifest Voting Agency Ltd:
Registered in England Number 2920820. Registered Office at above address. VAT Registration Number: GB 700 1880 77
Copyright: This e-mail may contain confidential or legally privileged information.
If you are not the named addressee you must not use or disclose such information, instead please report it to: admin at manifest.co.uk 
Please see http://www.manifest.co.uk/legal/legal_notices.htm for further information.