19 import datetime as dt

    19 import datetime as dt

    20 from yams.buildobjs import (EntityType, RelationType, RelationDefinition,

    20 from yams.buildobjs import (EntityType, RelationType, RelationDefinition,

    21                             SubjectRelation, Bytes,

    21                             SubjectRelation, Bytes,

    22                             RichString, String, Int, Boolean, Datetime, Date, Float)

    22                             RichString, String, Int, Boolean, Datetime, Date, Float)

    23 from yams.constraints import SizeConstraint, UniqueConstraint

    23 from yams.constraints import SizeConstraint, UniqueConstraint

    24 from cubicweb.schema import (WorkflowableEntityType, RQLConstraint,

    25 from cubicweb.schema import (WorkflowableEntityType, RQLConstraint,

    25                              RQLVocabularyConstraint,

    26                              RQLVocabularyConstraint,

    26                              ERQLExpression, RRQLExpression)

    27                              ERQLExpression, RRQLExpression)

    27 

    28 

    28 class Affaire(EntityType):

    29 class Affaire(EntityType):