23   '"Lennard de Rijk" <rijk0214@gmail.com>',

    51 

    52   def _keyName(self, **kwargs):

    53     """

    54     Returns the KeyName constructed from kwargs for this type of entity

    55 

    56     The Keyname is in the following format:

    57     entity.name:<key_value1>:<key_value2>:...:<key_valueN>

    58     """

    59 

    60     #Get the KeyFieldNames for this entity

    61     key_field_names = self.getKeyFieldNames()

    62 

    63     #Check if all given KeyFieldNames are valid for this entity

    64     if not all(key in key_field_names for key in kwargs.keys()):

    65       raise Error("Some of the provided arguments are not key fields")

    66 

    67     #Check if all key_field_names for this entity are present in kwargs

    68     if not all(field in kwargs.keys() for field in key_field_names):

    69         raise Error("Not all the required key fields are present")

    70 

    71     #Check if all kwargs.values() are non-false

    72     if not all(kwargs.values()):

    73         raise Error("Not all KeyValues are non-false")

    74 

    75     #Construct the KeyValues in the order given by getKeyFieldNames()

    76     keyvalues = []

    77     for key_field_name in key_field_names:

    78         keyvalues.append(kwargs[key_field_name])

    79 

    80     #Construct the KeyName in the appropriate format

    81     return ":".join([self._name] + keyvalues)