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 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
