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From tay...@apache.org
Subject cvs commit: jakarta-jetspeed-2/components/security/src/java/org/apache/jetspeed/security SecurityHelper.java
Date Thu, 23 Sep 2004 21:13:20 GMT
taylor      2004/09/23 14:13:20

  Modified:    components/security/src/java/org/apache/jetspeed/security
                        SecurityHelper.java
  Log:
  helper function to get a list of all principals of a given Principal class
  
  CVS: ----------------------------------------------------------------------
  CVS: PR:
  CVS:   If this change addresses a PR in the problem report tracking
  CVS:   database, then enter the PR number(s) here.
  CVS: Obtained from:
  CVS:   If this change has been taken from another system, such as NCSA,
  CVS:   then name the system in this line, otherwise delete it.
  CVS: Submitted by:
  CVS:   If this code has been contributed to Apache by someone else; i.e.,
  CVS:   they sent us a patch or a new module, then include their name/email
  CVS:   address here. If this is your work then delete this line.
  CVS: Reviewed by:
  CVS:   If we are doing pre-commit code reviews and someone else has
  CVS:   reviewed your changes, include their name(s) here.
  CVS:   If you have not had it reviewed then delete this line.
  
  Revision  Changes    Path
  1.5       +26 -1     jakarta-jetspeed-2/components/security/src/java/org/apache/jetspeed/security/SecurityHelper.java
  
  Index: SecurityHelper.java
  ===================================================================
  RCS file: /home/cvs/jakarta-jetspeed-2/components/security/src/java/org/apache/jetspeed/security/SecurityHelper.java,v
  retrieving revision 1.4
  retrieving revision 1.5
  diff -u -r1.4 -r1.5
  --- SecurityHelper.java	18 Sep 2004 19:33:35 -0000	1.4
  +++ SecurityHelper.java	23 Sep 2004 21:13:20 -0000	1.5
  @@ -17,6 +17,8 @@
   import java.security.Principal;
   import java.util.HashSet;
   import java.util.Iterator;
  +import java.util.LinkedList;
  +import java.util.List;
   import java.util.Set;
   
   import javax.security.auth.Subject;
  @@ -126,4 +128,27 @@
           principals.add(principal);
           return new Subject(true, principals, new HashSet(), new HashSet());
       }
  +    
  +    /**
  +     * <p>Given a subject, finds all principals of the given classe for that subject.
  +     * If no principals of the given class is not found, null is returned.</p>
  +     * @param subject The subject supplying the principals.
  +     * @param classe A class or interface derived from java.security.InternalPrincipal.
  +     * @return A List of all principals of type Principal matching a principal classe parameter.
  +     */
  +    public static List getPrincipals(Subject subject, Class classe)
  +    {
  +        List result = new LinkedList();
  +        Iterator principals = subject.getPrincipals().iterator();
  +        while (principals.hasNext())
  +        {
  +            Principal p = (Principal) principals.next();
  +            if (classe.isInstance(p))
  +            {
  +                result.add(p);
  +            }
  +        }
  +        return result;
  +    }
  +    
   }
  
  
  

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