[
https://issues.apache.org/jira/browse/ARIES-657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13049718#comment-13049718
]
Timothy Ward commented on ARIES-657:
------------------------------------
I have tried this patch and the new test falls over with an NPE. It seems to be
looking for a non-existent XML file - is there a chance it's missing from the
SVN patch?
> Enhanced support for custom scopes
> ----------------------------------
>
> Key: ARIES-657
> URL: https://issues.apache.org/jira/browse/ARIES-657
> Project: Aries
> Issue Type: Improvement
> Components: Blueprint
> Reporter: Brian DePradine
> Attachments: patch.txt
>
>
> I am currently working on a project that requires the use of a custom scope
> as follows:
> <blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0";
> xmlns:test="http://test.org";>
> <bean id="fooService" class="fooServiceImpl" scope="test:foo"/>
> </blueprint>
> In order to support my custom scope, I provide a NamespaceHandler whose job
> it is to register a BeanProcessor that implements the caching required by my
> custom scope. This then allows the cached instances to be retried using
> BlueprintContainer.getComponentInstance(). When I tried to get this working,
> however, I discovered a few issues.
> 1) Aries treats all scopes as strings, and as a result the scope from the
> example above is "test:foo". This is incorrect, as custom scopes are always
> qualified names, and so the correct value for the scope is
> "{http://test.org}foo";.
> 2) All beans that do not have a scope of "prototype" are automatically cached
> by the blueprint container. This means that my bean processor is only ever
> called the first time that the bean is requested. My bean processor is unable
> to do its job unless it is called everytime that a request for the bean is
> made.
> 3) Eager activation doesn't make sense for a custom scope, as it should only
> apply to 'singleton' scopes.
> Patch to follow.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
