Re: [OS] Java: how to start?
Horand Gassmann
> Oops, missing the xml file, sorry.
>
> Thank you for your fast answer.
>
> Kipp Martin a écrit :
>> Hi Olivier:
>>
>> First, thank you very much for your interest in OS.
>>
> I made several more tries but am still unable to find what is my
> mistake. I am trying to input the following model.
> /* Decision variables */
> var gjb2 >=0;
> var gjb3 >=0;
> var s2 >= 0;
> var s3 >= 0;
> /* Objective function */
> minimize sumofslack: s2 + s3;
> /* Constraints */
> s.t. lowcat : gjb2 + s2 = 3;
> s.t. highcat : gjb3 - s3 - 0.1 = 3;
> end;
>
> Attached is the xml osil file I obtained with one of my tries. I don't
> see why it is incorrect. (It uses column layout instead of row but I
> also tried with row layout with no success.)
I am not sure what you mean when you say "it is incorrect". The file is valid
under the OSiL schema and, from what I can tell, transcribes the given
problem.
What sort of errors do you experience? Does the parser report an error? Is the
solution nonsensical?
Cheers
gus gassmann
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Jun Ma
Regarding the Java parts of your questions, I am not sure how you downloaded
the code and software.
Either you may have built it yourself from branches/OSjava or downloaded the
a ready binary build "os-server-2.0.0.zip".
Either way, if you decide to use the Java as part of your software library,
you should just look at only the OSCommon package, i.e.
org.optimizationservices.oscommon.*, which has all the similar classes and
interfaces to the core C++ version to read, write OSxL files.
Your error message indicates to me that you may have downloaded and used
os-server-2.0.0, which has other packages including services to run readily
made/distributed solver executables.
Now, it does look like on COIN-OR we don't distribute an OSCommon.jar binary
that includes all org.optimizationservices.oscommon classes.
We will discuss that and may put the build on soon.
But for now you can may either just include all the OSCommon classes on your
classpath or zip up all the classes your self and call it whatever jar you
want to name (preferably OSCommon.jar) and put the jar on the classpath.
I hope the general comments gives some insights. Otherwise please be more
specific on your issues.
Jun
--------------------------------------------------
From: "Olivier Cailloux" <olivier....@ecp.fr>
Sent: Thursday, January 28, 2010 10:21 AM
To: <o...@list.coin-or.org>
Cc: "Jun Ma @ NWU" <m...@northwestern.edu>
Subject: Re: [OS] Java: how to start?
> Horand Gassmann a écrit :
> Indeed I should have included this. Running OSSolverService with this
> input file produces the following error (while running it with the
> parincLinear example file produces no error).
>
> ~$ ...OSSolverService -osil osil1.xml
> <?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl"
> href="../stylesheets/OSrL.xslt"?>
> <osrl xmlns="os.optimizationservices.org"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="os.optimizationservices.org
> http://www.optimizationservices.org/schemas/2.0/OSrL.xsd" >
> <general>
> <generalStatus type="error"/>
> <message>PARSER ERROR: Input is either not valid or well formed:
> improperly formed <instanceData> element
> Here are 20 characters currently being pointed to in the input string:
> ?xml version="1.0" e
> See line number: 7
> </message>
> </general>
> <job>
> </job>
> </osrl>
>
> Olivier
Gus Gassmann
> ~$ ...OSSolverService -osil osil1.xml
> <?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl"
> href="../stylesheets/OSrL.xslt"?>
> <osrl xmlns="os.optimizationservices.org"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="os.optimizationservices.org
> http://www.optimizationservices.org/schemas/2.0/OSrL.xsd" >
> <general>
> <generalStatus type="error"/>
> <message>PARSER ERROR: Input is either not valid or well formed:
> improperly formed <instanceData> element
> Here are 20 characters currently being pointed to in the input string:
> ?xml version="1.0" e
> See line number: 7
> </message>
> </general>
> <job>
> </job>
> </osrl>
I have replicated the error on my system here. I will investigate.
gus
-------------------------------------------------------
gus gassmann (Horand....@dal.ca)
School of Business Administration, Dalhousie University
6100 University Avenue
Halifax, Nova Scotia, Canada , B3H 3J5
ph. (902) 494-1844
fax (902) 494-1107