Hi:
Thanks a lot for detailing the steps required to make a *isolated* example.
Just a quick clarification:
In step 4:
> Copy tutorial1 into a separate directory tree,
> copy the runtime configuration files described above
<snip>
>Try to run your copy of the tutorial1 with some-new-directory/ojb
>location, with all <INSTALL_DIR>/lib/*.jar stuff in the classpath.
>When you have reached the point where hsql tries to
>open the database, and empty database will be created
<snip>
How did you do that? Did you copy build.xml to your location and modified the the
targets to compile to copied
source and invoke to generate sqls.Can you please explain this in little details.
thanks in advance
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Tue 2/4/2003 6:53 AM
To: [EMAIL PROTECTED]
Cc:
Subject: RE: Newbie question, and request for any step by step isolated
example
Hello,
I started with OJB approx. 2 months ago.
> -----Original Message-----
> From: Mehmet D. AKIN [mailto:[EMAIL PROTECTED]]
>
> Is there any step by step isolated example for basic usage of OJB? I
> found the tutorials a little complex. I'm not meaning the
> java codes but
> the whole configuration steps are really messed up in my
> mind. There are
> OJB code, ant tasks, torque tasks, source code, tutorial
> code, several
> XML documents, What steps should I do to prepare a single simple
> *isolated* example?
I made the same experience. The out-of-the-box experience
of OJB is indeed frustrating. An *isolated* example is
exactly what we need, in particular because the error messages
of OJB are not really helpful is case of typos or the like.
here is what I did:
I copied the hole OJB installation directory, and then
modified the build-process step-by-step in order to get
a relatively isolated example, just to see something running
that I could modify.
Unfortunately, the example has grown by now, so sharing
it with you would not be of any use.
If you do not what to do it the same way, you might succeed
as follows:
1. run the test suite out-of-the-box
(see http://jakarta.apache.org/ojb/quickstart.html)
2. inspect the directory <INSTALL_DIR>/target/test.
Its subdirectory ojb is the current working
directory during the tests.
Here you find two important runtime
configuration files:
target/test/ojb/repository.xml
target/test/ojb/OJB.properties
Do not exchange the latter with
target/test/OJB.properties,
that is the database! The first one includes the other
repository_*.xml files by xml means.
3. inspect the directory
<INSTALL_DIR>/target/srctest/org/apache/ojb/tutorial1
There you find the sources for the tutorial1
4. Copy tutorial1 into a separate directory tree,
copy the runtime configuration files described above
into some-new-directory/ojb.
Get rid of the some-new-directory/ojb/repository_ejb.xml, and
maybe the some-new-directory/ojb/repository_junit.xml
by removing their includes
from some-new-directory/ojb/repository.xml
Try to run your copy of the tutorial1 with some-new-directory/ojb
location, with all <INSTALL_DIR>/lib/*.jar stuff in the classpath.
When you have reached the point where hsql tries to
open the database, and empty database will be created
(two files named some-new-directory/OJB.properties and
some-new-directory/OJB.script)
The required tables will be missing and a corresponding
error exception will be thrown.
You find scripts that generate the tables in
<INSTALL_DIR>/target/src/sql/*-schema.sql
Use one of the hsqdb tools (see below) to run them.
5. A helpful tool is the Hsqldb gui tool. You can use
it to administrate and inspect hsql (file-) databases.
To start it, make sure the
<INSTALL_DIR>/lib/hsqldb.jar in your classpath
and run
java org.hsqldb.util.DatabaseManager -url jdbc:hsqldb:OJB
with some-new-directory as current working directory.
(OJB is the database name here.)
Good luck!
Olli
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