source: TI12-security/trunk/NDG_XACML/ndg/xacml/match.py @ 6740

"""NDG Security Match type definition

NERC DataGrid Project
"""
__author__ = "P J Kershaw"
__date__ = "25/02/10"
__copyright__ = "(C) 2010 Science and Technology Facilities Council"
__contact__ = "Philip.Kershaw@stfc.ac.uk"
__license__ = "BSD - see LICENSE file in top-level directory"
__contact__ = "Philip.Kershaw@stfc.ac.uk"
__revision__ = "$Id: $"
from ndg.xacml import PolicyComponent
from ndg.xacml.attribute import AttributeValue


class MatchBase(PolicyComponent):
    ELEMENT_LOCAL_NAME = None
    
    __slots__ = (
        '__attributeValue', 
        '__attributeDesignator', 
        '__attributeSelector',
        '__matchId'
    )
    
    def __init__(self):
        self.__attributeValue = None
         
        # Either/or in schema
        self.__attributeDesignator = None
        self.__attributeSelector = None
        
        self.__matchId = None

    def _get_attributeValue(self):
        return self.__attributeValue

    def _set_attributeValue(self, value):
        if not isinstance(value, AttributeValue):
            raise TypeError('Expecting %r type for "attributeValue" '
                            'attribute; got %r' % (AttributeValue, type(value)))
            
        self.__attributeValue = value

    attributeValue = property(_get_attributeValue, _set_attributeValue, None, 
                              "attribute value")

    def _getMatchId(self):
        return self.__matchId

    def _setMatchId(self, value):
        if not isinstance(value, basestring):
            raise TypeError('Expecting string type for "matchId" '
                            'attribute; got %r' % type(value))
            
        self.__matchId = value

    matchId = property(_getMatchId, _setMatchId, None, "Match Id")
    
    
class SubjectMatch(MatchBase):
    "Subject Match Type"
    ELEMENT_LOCAL_NAME = 'SubjectMatch'
    
    
class ResourceMatch(MatchBase):
    "Resource Match"
    ELEMENT_LOCAL_NAME = 'ResourceMatch'
    
    
class ActionMatch(MatchBase):
    "Action match"
    ELEMENT_LOCAL_NAME = 'ActionMatch'
    
    
class EnvironmentMatch(MatchBase):
    "Environment Match"
    ELEMENT_LOCAL_NAME = 'EnvironmentMatch'