[
http://issues.apache.org/jira/browse/OPENJPA-14?page=comments#action_12428817 ]
Bryan Noll commented on OPENJPA-14:
-----------------------------------
I thought about making it optional, but it just seemed odd to me that you'd
have to have 'META-INF/persistence.xml' in one of the places I mentioned
earlier...
1) system classpath
2)$ANT_HOME/lib
3) ant -lib dir_where_META_INF_is
4) I forgot about this before... but a 4th would be ${user.home}/.ant/lib
...in particular, the first two options seem like a round peg in a square hole.
Making it optional would be easy, but I just thought making it required would
save users the problem of having to get that on their classpath.
Maybe I'm not seeing the use case? Like I said though, changing it to optional
is trivial.
> PCEnhancer ant task requires openjpa jars to be on the system classpath or
> passed into ant with '-lib'
> ------------------------------------------------------------------------------------------------------
>
> Key: OPENJPA-14
> URL: http://issues.apache.org/jira/browse/OPENJPA-14
> Project: OpenJPA
> Issue Type: Bug
> Components: lib
> Environment: Windows XP
> Reporter: Bryan Noll
> Assigned To: Bryan Noll
> Attachments: OPENJPA-14.patch1, OPENJPA-14.patch2
>
>
> Ideally, one should be able to run 'ant openjpac' (openjpac would be a
> target defined in the build script that would use the PCEnhancer task)
> without having to put the openjpa jars on the system classpath or having to
> pass them into ant vie the '-lib' argument. Currently this is not possible.
> The root of the issue can be seen from by looking at the public static
> String[] getImplementors(String serviceName, ClassLoader loader) method of
> the Services class. Basically, the call to
> loader = Thread.currentThread().getContextClassLoader();
> returns a ClassLoader with the $ANT_HOME\lib\*.jar and
> $JAVA_HOME\lib\tools.jar in it... which obviously doesn't contain
> 'META-INF/services/org.apache.openjpa.conf.ProductDerivation'
> The exception seen when encountering this issue:
> java.lang.ExceptionInInitializerError
> at
> org.apache.openjpa.conf.OpenJPAConfigurationImpl.<init>(OpenJPAConfigurationImpl.java:510)
> at
> org.apache.openjpa.conf.OpenJPAConfigurationImpl.<init>(OpenJPAConfigurationImpl.java:160)
> at
> org.apache.openjpa.conf.OpenJPAConfigurationImpl.<init>(OpenJPAConfigurationImpl.java:151)
> at
> org.apache.openjpa.ant.PCEnhancerTask.newConfiguration(PCEnhancerTask.java:77)
> at
> org.apache.openjpa.lib.ant.AbstractTask.execute(AbstractTask.java:170)
> at
> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
> at org.apache.tools.ant.Task.perform(Task.java:364)
> at org.apache.tools.ant.Target.execute(Target.java:341)
> at org.apache.tools.ant.Target.performTasks(Target.java:369)
> at
> org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
> at org.apache.tools.ant.Project.executeTarget(Project.java:1185)
> at
> org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40)
> at org.apache.tools.ant.Project.executeTargets(Project.java:1068)
> at org.apache.tools.ant.Main.runBuild(Main.java:668)
> at org.apache.tools.ant.Main.startAnt(Main.java:187)
> at org.apache.tools.ant.launch.Launcher.run(Launcher.java:251)
> at org.apache.tools.ant.launch.Launcher.main(Launcher.java:72)
> Caused by: java.util.MissingResourceException: Your system is missing product
> derivations. Product derivations provide configuration options for supported
> data stores and specifications. You must have a
> META-INF/services/org.apache.openjpa.conf.ProductDerivation file in your
> classpath listing the available derivation classes, and some listed class
> must be instantiable. Typically this file is bundled as part of the
> distribution. Have you unbundled it, or unbundled its listed classes?
> at
> org.apache.openjpa.conf.ProductDerivations.<clinit>(ProductDerivations.java:53)
> ... 17 more
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira
