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From Ian Boston <...@tfd.co.uk>
Subject Re: PrincipalManager question.
Date Wed, 01 Jul 2009 23:28:08 GMT

On 1 Jul 2009, at 13:59, Angela Schreiber wrote:

> hi ian
>
>> If I want to determine if the an Authorizable has a Principal
>
> what do you mean by "if an authorizable has a principal"?

I need to answer the question.

Is userA a member of groupB either directly or indirectly.

userA is a member of about 100 groups, the group hierarchy is several  
levels deep and some of the principals are come from custom  
PrincipalProvider implementations.


>
> in case you are referring to the fact that an authorizable
> can have more than a single principal associated with it
> there something like Authorizable#getPrincipals in the api.
>
> see also Authorizable#addReferee and #removeReferee.

thank you
Ian


>
> regards
> angela
>
>
>
>> (presumably witht the PrincipalManager), is there a way of doing  
>> this with the DefaultSecurityManager in JR15 and later, other than  
>> iterating through all the possible principals and searching for a  
>> match.
>> We have uses that have a lot of principals, and getting them and  
>> iterating is inefficient (IMHO), I would like to be able to perform  
>> a search
>> eg
>> /**
>> * @param myPrincipal the principal to be checked
>> * @param candidatePrincipal the principal that we are checking to  
>> see if myPrincipal has
>> * @retrun true if myPrincipal has candidatePrincipal, false otherwise
>> */
>> boolean principalManager.hasPrincipal(Principal myPrincipal,  
>> Principal candidatePrincipal)
>> Ideally I would like that to propagate through to the  
>> PrincipalProviders as this is really an search query that could be  
>> expensive.
>> Is there a way of achinving this *without* changing anyhing inside  
>> JR15 ?
>> Ian
>


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