spki
Class SubjectRole

java.lang.Object
  |
  +--spki.BaseObj
        |
        +--spki.Subject
              |
              +--spki.SubjectRole

public class SubjectRole

extends Subject

SPKI SubjectRole class.

Formal definitions:

 <subject-role>:: "(" "subject" <threshold>? <subj-role-obj> ")" ;
 

Version:

$Id: SubjectRole.java,v 1.13 2002/06/25 12:48:03 tep Exp $

Author:

Tep Narula <tep@win.trlabs.ca>

See Also:

Subject, SubjRoleObj

Field Summary

private static String

__ME This class's full name.

Fields inherited from class spki.Subject

__ME, dirty, MIN_THRESHOLD, reduceonly, SEXP_NAME, subj_obj, subj_obj_sexp, subj_objs, thresh, thresh_scheme, THRESHOLD_SEXP_NAME

Fields inherited from class spki.BaseObj

__ME, cache_sexp, cached_sexp, DEFAULT_HASH_ALG, locked, SEXP_NAME

Constructor Summary

protected	SubjectRole() Don't use me!
	SubjectRole(int threshold, Sexp thresh_scheme, Object[] subjects) Create an immutable SubjectRole object from given threshold and list of subj-role-objs.
	SubjectRole(int threshold, Sexp thresh_scheme, SubjRoleObj subject) Create an immutable SubjectRole object from a given threshold value and subj-role-obj.
	SubjectRole(SExpression sexp) Create an immutable SubjectRole object from an S-Expression.

Method Summary

static SubjRoleObj

getSubjRoleObj(SExpression sexp) Get an instance of a SubjRoleObj from given S-Expression.

Methods inherited from class spki.Subject

getSubjACL, getSubjObj, getSubjObjs, getSubjObjsLength, getThreshold, getThresholdSchemeId, rSubjObjs2SExpression, setSubjObj, setThreshold, toSExpression

Methods inherited from class spki.BaseObj

disableSExpressionCaching, enableSExpressionCaching, extractHashAlgId, getCachedSExpression, isLocked, isSListOfType, lock, providerToSPKI, setCachedSExpression, spkiToProvider, toString

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, wait, wait, wait

Field Detail

__ME

private static final String __ME

This class's full name.

Constructor Detail

SubjectRole

protected SubjectRole()

Don't use me!

See Also:

SubjectRole(SExpression), SubjectRole(int,Sexp,SubjRoleObj)

SubjectRole

public SubjectRole(SExpression sexp)
            throws SPKIException,
                   ParseException

Create an immutable SubjectRole object from an S-Expression.

See Also:

Subject.Subject(SExpression)

SubjectRole

public SubjectRole(int threshold,
                   Sexp thresh_scheme,
                   SubjRoleObj subject)
            throws SPKIException

Create an immutable SubjectRole object from a given threshold value and subj-role-obj.

Parameters:

threshold - the optional threshold value, ignored if < MIN_THRESHOLD.

thresh_scheme - the threshold scheme-id, ignored if the threshold argument is ignored.

subject - the subj-role-obj.

See Also:

Subject.MIN_THRESHOLD, SubjRoleObj

SubjectRole

public SubjectRole(int threshold,
                   Sexp thresh_scheme,
                   Object[] subjects)
            throws SPKIException

Create an immutable SubjectRole object from given threshold and list of subj-role-objs. For use in the threshold reduction only.

See Also:

Subject.Subject(int,Sexp,Object[])

Method Detail

getSubjRoleObj

public static final SubjRoleObj getSubjRoleObj(SExpression sexp)
                                        throws ParseException,
                                               SPKIException

Get an instance of a SubjRoleObj from given S-Expression.

Parameters:

sexp - the SExpression containing a SubjRoleObj.

Returns:

An object instance implementing SubjRoleObj.

Throws:

ParseException - if the argument doesn't contain a SubjRoleObj.

SPKIException - if something went wrong.