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From "Stephen Felts (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-1945) Need changes to manifest for OSGi environment
Date Tue, 19 Jun 2007 13:24:25 GMT

    [ https://issues.apache.org/jira/browse/DERBY-1945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12506163
] 

Stephen Felts commented on DERBY-1945:
--------------------------------------

The bundle, as it stands, has a number of packages that are exported in the manifest.
For example, org.apache.derby.jdbc is exported.  That means that I can reference any classes
in this package in an OSGi environment.  If only a subset of classes in that package should
be exposed, there is syntax supported by OSGi to expose only specific classes (or the other
classes should be moved out of the package).  When I reference any of those classes, all of
the packages for which there is an import statement must also be exported.  Otherwise, a ClassNotFound
will occur at runtime.  It's not worth adding any OSGi information to the manifest if the
jar is not usable as an OSGi bundle.

The two packages that I referenced in the original description were packages that I needed
to add to the manifest exports when running a program in an OSGi environment  that covers
most if not all of the JDBC interface.

However, looking at imports from org.apache.derby.jdbc, it would seem that the following are
needed for all of the classes in org.apache.derby.jdbc:
org.apache.derby.iapi.db
org.apache.derby.iapi.error
org.apache.derby.iapi.jdbc
org.apache.derby.iapi.services.context
org.apache.derby.iapi.services.i18n
org.apache.derby.iapi.services.info
org.apache.derby.iapi.services.io
org.apache.derby.iapi.services.monitor
org.apache.derby.iapi.sql
org.apache.derby.iapi.sql.conn
org.apache.derby.iapi.store.access
org.apache.derby.iapi.store.access.xa
org.apache.derby.impl.jdbc

Working with OSGi gives one a new vision on code isolation, modularity, etc.



> Need changes to manifest for OSGi environment
> ---------------------------------------------
>
>                 Key: DERBY-1945
>                 URL: https://issues.apache.org/jira/browse/DERBY-1945
>             Project: Derby
>          Issue Type: Bug
>          Components: Miscellaneous
>    Affects Versions: 10.1.3.1
>            Reporter: Stephen Felts
>            Priority: Minor
>
> When running with Derby in an OSGi environment, there are a couple of changes that are
needed in the manifest.
> 1. The manifest does not have a Bundle Symbolic Name.  This causes some tools not to
recognize it as an OSGi bundle and some things don't work nicely without the symbolic name.

> Add Bundle-SymbolicName: derby  to the manifest.
> 2. I'm working with a product that creates dynamic proxies for all of the interfaces
like Connection, Statement, etc.
> As part of doing that, it needs access to all classes that are referenced in those interface
classes.
> There are several classes that are referenced in packages that are not exported.  The
following exports needed to be added to the manifest:
> org.apache.derby.iapi.jdbc
> org.apache.derby.impl.jdbc

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