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import logging


class TestVectorFactory:

    """
        Factory of Test Vectors Objects
    """

    def __init__(self, criterionClasses, consoleLogger):
        """
            Init function

            :param criterionClasses: available criterion types
            :type criterionClasses: list of classes
            :param consoleLogger: console log handler
            :type consoleLogger: Handler
        """
        self.__criterionClasses = criterionClasses
        self.__logger = logging.getLogger(__name__)
        self.__logger.addHandler(consoleLogger)

    def generateTestVector(self, rawCriterions=None):
        """
            Function invoqued to generate TestVector object

            :param rawCriterions: the desired criterions state descriptions
            :type rawCriterions: dictionnary
        """

        criterions = []

        for criterionClass in self.__criterionClasses:
            # Instanciate the criterion class requested
            newCriterion = criterionClass()

            if rawCriterions:
                try:
                    newCriterion.currentValue = rawCriterions[
                        criterionClass.__name__]
                    criterions.append(newCriterion)
                except KeyError as e:
                    self.__logger.debug(
                        "Missing Criterion {}, old value keeped".format(
                            criterionClass.__name__))
            else:
                # if rawCriterions is None, we create an empty criterions lists
                newCriterion.currentValue = newCriterion.noValue
                criterions.append(newCriterion)
        return criterions