> However IIUC this dissects the system property
> java.class.path and only parses stuff on that. This might be
> reasonable for a command line tool (although I have some
> doubts) but it seems to me that for any other situation a
> scan of the provided classloader would be more appropriate.
> Is this reasonable?
It is. Of course, there is no standard way to scan classloaders. The
best I know of is to do:
cls.getProtectionDomain().getCodeSource().getLocation()
and then scan from that URL.
Of course, this assumes that a) you have a class (not a ClassLoader), b)
you have security privileges to get the protection domain, and b) the
location is parsable and accessible.
Is there some other way that you know of to scan a ClassLoader?
> Also, I would like to suggest a flag in the
> openjpa.jdbc.SynchronizeMappings=buildSchema(...) stuff to
> turn on this eager scanning I'm trying to implement. Does
> this seem reasonable?
It does.
--
Patrick Linskey
BEA Systems, Inc.
_______________________________________________________________________
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> -----Original Message-----
> From: David Jencks [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, April 25, 2007 12:18 PM
> To: open-jpa-dev@incubator.apache.org
> Subject: More questions on runtime schema generation
>
> I'm working on modifications so that ddl can operate in a
> separate transaction on a connection from the jta ds and I
> would like to have a complete scan and enhancement as soon as
> possible when the EMF is first accessed. I have this working
> when the classes are listed explicitly in the persistence.xml
> but not when they aren't.
>
> It looks like the relevant code is AbstractCFMetaDataFactory
> getPersistentTypeNames
>
> if (names.isEmpty() && devpath)
> scan(new ClasspathMetaDataIterator(null,
> newMetaDataFilter()),
> newClassArgParser(), names, false, null);
>
>
> However IIUC this dissects the system property
> java.class.path and only parses stuff on that. This might be
> reasonable for a command line tool (although I have some
> doubts) but it seems to me that for any other situation a
> scan of the provided classloader would be more appropriate.
> Is this reasonable?
>
> Also, I would like to suggest a flag in the
> openjpa.jdbc.SynchronizeMappings=buildSchema(...) stuff to
> turn on this eager scanning I'm trying to implement. Does
> this seem reasonable?
>
> thanks
> david jencks
>
>
>
Notice: This email message, together with any attachments, may contain
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