Re: [QUESTION] avalon-phoenix block for OpenEJB

Paul Hammant 20 Sep 2002 06:46:26 -0000

Daniel,

i am currently developing an avalon-phoenix block for OpenEJB.

Nexct to the release of Pheonix, this is probably the most significant news all year for the Avalon project. Wellcome Daniel, I hope this is the start of a great relationship.

i am having some problems with the avalon classloader.

OpenEJB uses a custom java.net.URLStreamHandler that
manages resources of the form 'resource:/'. that handler
is contained within the openejb.jar file and gets
registered by setting the 'java.protocol.handler.pkgs'
system property.

this happens before initializing any OpenEJB specific
component.

allthough i am still having problems, loading files
from the SAR file using the 'resource:/' identifier.
it seems that the protocol handler wont be found,
allthough it is definitly within the block's SAR file.

i would appreciate it, if you could explain the classloader system of avalon-phoenix a little bit further.

Well it is a tree of classloaders primarily. One per SAR file, above a couple that constiture Phoenix and perhaps its bootloader.

Is there any chance you could make a URLStreamHandler using modal block say based on the 'Hello' demo (avalon-apps/demo) that works when lanched via main, but does not when launched in phoenix? Actually it seems an obvious thing to make myself, so I'll give it a go on Saturday.

I'm look for other solutions, and at the OpenEJB source now. It is a neat way of loading resource files....

   Searching for: resource:
   src\facilities\org\openejb\alt\config\ConfigUtils.java(716): URL
   defaultConfig = new URL("resource:/default.openejb.conf");
   src\facilities\org\openejb\alt\config\Deploy.java(660):
   out.print("\nResource: ");
   src\facilities\org\openejb\alt\config\Deploy.java(871):
   versionInfo.load( new URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\facilities\org\openejb\alt\config\Deploy.java(884):
   versionInfo.load( new URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\facilities\org\openejb\alt\config\Deploy.java(893): InputStream
   in = new URL( "resource:/openejb/deploy.txt"
   ).openConnection().getInputStream();
   src\facilities\org\openejb\alt\config\Deploy.java(909):
   versionInfo.load( new URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\facilities\org\openejb\alt\config\Deploy.java(918): InputStream
   in = new URL( "resource:/openejb/deploy-examples.txt"
   ).openConnection().getInputStream();
   src\facilities\org\openejb\alt\config\DTDResolver.java(76): // load
   resource:/openejb/dtds/ejb-jar_1_1.dtd
   src\facilities\org\openejb\alt\config\DTDResolver.java(77): URL dtd
   = new URL("resource:/openejb/dtds/"+dtdName);
   src\main\org\openejb\OpenEJB.java(158): versionInfo.load( new URL(
   "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\main\org\openejb\util\JarUtils.java(71): * of the form
   "resource:/path".
   src\main\org\openejb\util\JarUtils.java(90): URL url = new
   URL("resource:/"+path);
   src\main\org\openejb\util\JarUtils.java(94): * URL or a resource:
   URL, we must strip off the config file location
   src\main\org\openejb\util\Logger.java(72): System.setProperty(
   "log4j.configuration", "resource:/default.logging.conf" );
   src\server\org\openejb\server\EjbDaemon.java(1100):
   versionInfo.load( new URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\server\org\openejb\server\EjbDaemon.java(1112):
   versionInfo.load( new URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\server\org\openejb\server\EjbDaemon.java(1121): InputStream in =
   new URL( "resource:/openejb/ejbserver.txt"
   ).openConnection().getInputStream();
   src\server\org\openejb\server\EjbDaemon.java(1137):
   versionInfo.load( new URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\server\org\openejb\server\EjbDaemon.java(1146): InputStream in =
   new URL( "resource:/openejb/ejbserver-examples.txt"
   ).openConnection().getInputStream();
   src\server\org\openejb\server\Stop.java(114): versionInfo.load( new
   URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\server\org\openejb\server\Stop.java(123): InputStream in = new
   URL( "resource:/openejb/stop.txt" ).openConnection().getInputStream();
   src\server\org\openejb\server\Stop.java(139): versionInfo.load( new
   URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\server\org\openejb\server\Stop.java(148): InputStream in = new
   URL( "resource:/openejb/stop-examples.txt"
   ).openConnection().getInputStream();
   src\server\org\openejb\server\admin\HttpResponse.java(196):
   versionInfo.load( new URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   src\server\org\openejb\server\admin\text\Command.java(120): URL dir
   = new URL("resource:/openejb/server/commandlist.txt");
   src\server\org\openejb\server\admin\text\Version.java(68):
   versionInfo.load( new URL( "resource:/openejb-version.properties"
   ).openConnection().getInputStream() );
   Found 26 occurrence(s) in 11 file(s)

... but a little away from the normal Phoenix block configuration (see use of Configurable in the demos). Having said that, as long as there is only one OpenEJB server in a single Phoenix instance it should work perfectly (that is when we get it working). Do you have a CVS depot or branch that represents your working state?

Regards,

- Paul


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

Re: [QUESTION] avalon-phoenix block for OpenEJB

Reply via email to