That's what I did!

Hi Vladimir,

that's exactly the solution that I found. I examined
the code and pondered if I should do a hack. But than
I just set the DODS_HOME variable via
System.setProperty before launching DODS .. and it
worked. 

Thanks for your help!

I still have some questions about the "correctness" of
DODS as a caching manager. One of my concernes is that
two or more threads access and try to update the same
DO (this concern has been mentioned in the online
manuals). How do I prevent this? (or how do I deal
with it?) Isn't that a major drawback?

The other question is, how do I use the SQL feature
OFFSET and LIMIT? Often you need just a "page" of a
table and it would be a big waste to load the entire
table and throw away the parts you don't need! The
best solution for this (I suppose the database
optimizes this) would be the use of OFFSET and LIMIT.

I would like to use DODS for some work at a university
where I am tutoring some students and for this end I
feel that a more "scientific" documentation would be
necessary, explaining how the caching works, etc.
(well, this is just my personal whishing list!)


Thanks for your time,

   Axel






















Message: 2
Date: Wed, 26 Nov 2003 08:52:46 -0800 (PST)
From: Vladimir Ritz Bossicard <vbossica@xxxxxxxxx>
Subject: Re: Enhydra:  Re: Dods standalone program
(Vladimir Ritz 
Bossicard)
To: enhydra@xxxxxxxxxxx
Reply-To: enhydra@xxxxxxxxxxx

> Still the same message: JVM can not find neither
DODS
> HOME nor ENHYDRA HOME!

what I do is a HUGE hack.  But it works:

1) set the dods home location in a property of the
servlet (web.xml 
file)

  <servlet>
    <servlet-name>ApplicationGateway</servlet-name>

    <init-param>
      <param-name>DodsHome</param-name>
     
<param-value>/opt/java/install/dods-5.1</param-value>
    </init-param>

    <init-param>
      <param-name>DodsConfig</param-name>
      
<param-value>/home/vladimir/proto/test/config/dods.conf</param-value>
    </init-param>

2) in your servlet initialization code:

  System.setProperty("DODS_HOME",
config.getInitParameter("DodsHome"));
  DODS.startup(config.getInitParameter("DodsConfig"));

I won't say that it's a nice solution, but it does the
job.

hth

-Vladimir


=====
Vladimir Ritz Bossicard
www.bossicard.com



=====
Axel Wilhelm Berle

e-mail: axelberle@xxxxxxxx
Tel: (office) +55 16 618.0090
     (mobile) +55 16 9964.6343

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