+##############################
+class RegUser (RegRecord):
+ __tablename__ = 'users'
+ # these objects will have type='user' in the records table
+ __mapper_args__ = { 'polymorphic_identity' : 'user' }
+ record_id = Column (Integer, ForeignKey ("records.record_id"), primary_key=True)
+ email = Column ('email', String)
+ keys = relationship ('RegKey', backref='user')
+
+ def __init__ (self, **kwds):
+ # handle local settings
+ if 'email' in kwds: self.email=kwds.pop('email')
+ # fill in type if not previously set
+ if 'type' not in kwds: kwds['type']='user'
+ RegRecord.__init__(self, **kwds)
+
+ # append stuff at the end of the record __repr__
+ def __repr__ (self):
+ result = RegRecord.__repr__(self).replace("Record","User")
+ result.replace ("]"," email=%s"%self.email)
+ result += "]"
+ return result
+
+ @validates('email')
+ def validate_email(self, key, address):
+ assert '@' in address
+ return address
+
+####################
+# xxx tocheck : not sure about eager loading of this one
+# meaning, when querying the whole records, we expect there should
+# be a single query to fetch all the keys
+class RegKey (Base):
+ __tablename__ = 'keys'
+ key_id = Column (Integer, primary_key=True)
+ record_id = Column (Integer, ForeignKey ("records.record_id"))
+ key = Column (String)
+ pointer = Column (Integer, default = -1)
+
+ def __init__ (self, key, pointer=None):
+ self.key=key
+ if pointer: self.pointer=pointer
+
+ def __repr__ (self):
+ result="[key key=%s..."%self.key[8:16]
+ try: result += " user=%s"%self.user.record_id
+ except: result += " <orphan>"
+ result += "]"
+ return result
+