On Nov 17, 2003, at 10:40 PM, Ross Mason wrote:
I've only brought in the commons libs to use the beanUtils helper to set external Bean references on the ActionInvocation. If you have a similar bean helper in OS we could use that instead. Mike says there might be something, so I'll have a look.
I believe the paramsInterceptor pushes the params onto the stack rather that set the properties on the ActionInvocation.
Cheers,
Ross
Cameron Braid wrote:
This is great.
I would like to see this integrated into xwork propper :)
What does everyone else think ?
One thing - you have introduced a dependency on Commons Bean Utils. Can this be replaced with something else ? Could it not use the same method that the params interceptor uses ?
Thanks.
Cameron.
Ross Mason wrote:Hi,
As per the discussion late last week, we have a patch for Xwork so that it can use an external container to resolve component references.
I've created the following issue - http://jira.opensymphony.com/secure/ViewIssue.jspa?key=XW-122
I've added a breakdown of the changes below, in summary, this is how it works-
You can configure a action to have external references in the xwork.xml using a new <external-ref> tag on the action
When the action is configured the external refs are stored on the action config.
When the action is invoked, there is a new interceptor that will resolve these references. It does this by using a new attribute on the package config called externalReferenceResolver i.e.
<package name="default" externalReferenceResolver="com.atlassian.xwork.ext.SpringServletConte xtReferenceResolver">
In this case, the SpringServletContextReferenceResolver implementation will handle the work of looking up and setting the references on the action.
Note, if a resolver is not found on the actions package, it will tranverse up the package heirarchy to find one.
We have an implementation for Spring, but I have not included it in this patch as it should probably go into an xwork-ext sub-project. Let me know what you want me to do with this...
Here are the changes and additions to the xwork codebase -
1. added 2 new config attributes -
- a new element external-ref to the action element in the config.
i.e <external-ref name="foo">Foo</external-ref>
where name is the setter method name and Foo is the reference to lookup.
- added an attribute to the package element called externalReferenceResolver which supplies a FQ classname to an ExternalReferenceResolver implementation.
2. Updated the xwork DTD accordingly.
3. Added 4 new classes -
- External Reference - an encapsulation of the external-ref tag
- ExternalReferenceResolver - an interface to provide implementations for resolving references from an external container
- ExternalReferencesInterceptor - will resolve references on a given ActionInvocation
- ReferenceResolverException - thrown by ExternalReferenceResolver
4. Added support for external references to the ActionConfig. I also added the attribute packageName to the ActionConfig, so that the Interceptor could determine which package the action belonged to in order to find the externalReferenceResolver.
5. Added support for the externalReferenceResolver attribute to the PackageConfig.
6. Added support for the extra configuration to the XMLConfigurationProvider and DefaultConfigurationProvider
7. Added tests in the org.opensymphony.xwork.config.ExternalReferenceResolverTest
I've attached a cvs patch with all the changes. I built the patch against the latest src.
Cheers,
Ross
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