38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
from datetime import datetime
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class Persistent( object ):
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def __init__( self, object_id, secondary_id = None ):
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self.__object_id = object_id
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self.__secondary_id = secondary_id
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self.__revision = datetime.now()
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self.__revisions_list = [ self.__revision ]
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def update_revision( self ):
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self.__revision = datetime.now()
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# make a new copy of the list to prevent sharing of this list between different revisions
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self.__revisions_list = self.__revisions_list + [ self.__revision ]
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def revision_id( self ):
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return "%s %s" % ( self.__object_id, self.__revision )
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@staticmethod
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def make_revision_id( object_id, revision ):
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return "%s %s" % ( object_id, revision )
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def full_secondary_id( self ):
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return "%s %s" % ( type( self ).__name__, self.secondary_id )
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def to_dict( self ):
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return dict(
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object_id = self.__object_id,
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revision = self.__revision,
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revisions_list = self.__revisions_list,
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)
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object_id = property( lambda self: self.__object_id )
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secondary_id = property( lambda self: self.__secondary_id )
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revision = property( lambda self: self.__revision )
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revisions_list = property( lambda self: self.__revisions_list )
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