[jira] [Created] (ESCIMO-2) Generalize Resources Service classes

["Patrick Radtke (JIRA)" <ji...@apache.org>]

Patrick Radtke created ESCIMO-2:
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             Summary: Generalize Resources Service classes
                 Key: ESCIMO-2
                 URL: https://issues.apache.org/jira/browse/ESCIMO-2
             Project: eSCIMo 
          Issue Type: Improvement
            Reporter: Patrick Radtke


As a user of the eSCIMo library
I want to easily be able to expose new resources
without writing boiler plate code

The SCIM specification allows for additional resources to be defined - either within the realm of the spec, or by the service provider.
    In an ideal world, I would be able to add these additional resources by extending ServerResource and implementing a resource specific provider interface, and the rest of the Server implementation would be generic enough to "just work". Currently that is not the case, and the server implementation assumes User and Group resources.

    I think it may make sense to generalize ProviderService so that implementation would be both Resource and Backend specific. As example, implementations could be like:
     LdapUserResourceProvider - a User resource that is provide from ldap
     XmlGroupResourceProvider - a group resource that is provided from an xml file
     JpaPizzaResourceProvider - a Pizza resource that comes from a DB

    Then  at the RESTful server level, instead of defining resource specific endpoints like GroupService and UserService, a generic ResourceService could determine the corresponding resource specific ProviderService implementation based on the URL. For example, if ResourceService saw /Users/123 it could user the string "Users" to look up in a factory, or a map the correct ProviderService for UserResources.



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