def relation_schema(schema, context, ignore_entities=False):
relation = mapping('relation', validator=chained(source_not_target))
relation.add(
key('type', validator=chained(nonempty_string, in_([schema.name]))))
if not ignore_entities:
relation.add(_node(EntitySchemaType(context), 'source'))
relation.add(_node(EntitySchemaType(context), 'target'))
return apply_schema(relation, schema)
def relation_schema(schema, context, ignore_entities=False):
relation = mapping('relation', validator=chained(
source_not_target
))
relation.add(key('type', validator=chained(
nonempty_string,
in_([schema.name])
)))
if not ignore_entities:
relation.add(_node(EntitySchemaType(context), 'source'))
relation.add(_node(EntitySchemaType(context), 'target'))
return apply_schema(relation, schema)
def apply_schema(base, schema):
""" Apply the required attributes of a given schema to an existing
schema. """
for attribute in schema.attributes:
validator = ATTRIBUTE_VALIDATORS[attribute.type]
missing = attribute.missing
if validator == colander.Boolean:
missing = missing or "0"
base.add(_node(validator(), attribute.name,
missing=attribute.missing, empty=attribute.missing))
return base
def apply_schema(base, schema):
""" Apply the required attributes of a given schema to an existing
schema. """
for attribute in schema.attributes:
validator = ATTRIBUTE_VALIDATORS[attribute.type]
missing = attribute.missing
if validator == colander.Boolean:
missing = missing or "0"
base.add(
_node(validator(),
attribute.name,
missing=attribute.missing,
empty=attribute.missing))
return base
