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https://issues.apache.org/jira/browse/CMIS-379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13041187#comment-13041187
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Peter Monks commented on CMIS-379:
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The singleton I was referring to was CmisBindingFactory - it uses the classic
"private constructor + static getInstance() method" singleton anti-pattern.
> Allow custom AuthenticationProvider's to be registered via dependency
> injection
> -------------------------------------------------------------------------------
>
> Key: CMIS-379
> URL: https://issues.apache.org/jira/browse/CMIS-379
> Project: Chemistry
> Issue Type: Wish
> Components: opencmis-client
> Affects Versions: OpenCMIS 0.3.0
> Environment: n/a
> Reporter: Peter Monks
> Assignee: Florian Müller
> Fix For: OpenCMIS 0.4.0
>
>
> As documented at
> http://incubator.apache.org/chemistry/opencmis-client-bindings.html, the only
> way to configure a custom AuthenticationProvider is to specify the
> fully-qualified classname as a String entry in the Session parameters Map.
> This is a crude approach that (amongst other things) makes it very difficult
> to implement a custom AuthenticationProvider that itself has one or more
> dependencies.
> The solution is to support (but not require, obviously) the dependency
> injection of custom AuthenticationProviders, either directly (can be injected
> directly into the CmisBindingFactory) or indirectly (can be injected into
> custom client code, and than passed either as a Session parameter or whatever
> to CmisBindingFactory).
> From a brief perusal it appears there are at least two ways of achieving this:
> # allow an *instance* of an AuthenticationProvider to be provided in the
> Session parameters Map. Note: this would require that the type of the Map is
> modified from Map<String, String> to Map<String, Object>, but this is
> probably a good idea anyway as it seems unlikely that all Session parameters,
> now and in the future, will always be Strings.
> # add a setter to the CmisBindingFactory that allows the
> AuthenticationProvider to be configured directly.
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