def create(name, item_constraint=None, **addl_constraints):
""" Create an array validator based on the passed in constraints.
If item_constraint is a tuple, it is assumed that tuple validation
is being performed. If it is a class or dictionary, list validation
will be performed. Classes are assumed to be subclasses of ProtocolBase,
while dictionaries are expected to be basic types ('string', 'number', ...).
addl_constraints is expected to be key-value pairs of any of the other
constraints permitted by JSON Schema v4.
"""
logger.debug(
fmt("Constructing ArrayValidator with {} and {}", item_constraint,
addl_constraints))
from python_jsonschema_objects import classbuilder
klassbuilder = addl_constraints.pop("classbuilder", None)
props = {}
if item_constraint is not None:
if isinstance(item_constraint, (tuple, list)):
for i, elem in enumerate(item_constraint):
isdict = isinstance(elem, (dict, ))
isklass = isinstance(elem, type) and util.safe_issubclass(
elem,
(classbuilder.ProtocolBase, classbuilder.LiteralValue))
if not any([isdict, isklass]):
raise TypeError(
"Item constraint (position {0}) is not a schema".
format(i))
elif isinstance(item_constraint,
(classbuilder.TypeProxy, classbuilder.TypeRef)):
pass
elif util.safe_issubclass(item_constraint, ArrayWrapper):
pass
else:
isdict = isinstance(item_constraint, (dict, ))
isklass = isinstance(
item_constraint, type) and util.safe_issubclass(
item_constraint,
(classbuilder.ProtocolBase, classbuilder.LiteralValue))
if not any([isdict, isklass]):
raise TypeError("Item constraint is not a schema")
if isdict and '$ref' in item_constraint:
if klassbuilder is None:
raise TypeError(
"Cannot resolve {0} without classbuilder".format(
item_constraint['$ref']))
uri = item_constraint['$ref']
if uri in klassbuilder.resolved:
logger.debug(
util.lazy_format(
"Using previously resolved object for {0}",
uri))
else:
logger.debug(
util.lazy_format("Resolving object for {0}", uri))
with klassbuilder.resolver.resolving(uri) as resolved:
# Set incase there is a circular reference in schema definition
klassbuilder.resolved[uri] = None
klassbuilder.resolved[
uri] = klassbuilder.construct(
uri, resolved,
(classbuilder.ProtocolBase, ))
item_constraint = klassbuilder.resolved[uri]
elif isdict and item_constraint.get('type') == 'array':
# We need to create a sub-array validator.
item_constraint = ArrayWrapper.create(
name + "#sub",
item_constraint=item_constraint['items'],
addl_constraints=item_constraint)
elif isdict and 'oneOf' in item_constraint:
# We need to create a TypeProxy validator
uri = "{0}_{1}".format(name, "<anonymous_list_type>")
type_array = []
for i, item_detail in enumerate(item_constraint['oneOf']):
if '$ref' in item_detail:
subtype = klassbuilder.construct(
util.resolve_ref_uri(
klassbuilder.resolver.resolution_scope,
item_detail['$ref']), item_detail)
else:
subtype = klassbuilder.construct(
uri + "_%s" % i, item_detail)
type_array.append(subtype)
item_constraint = classbuilder.TypeProxy(type_array)
elif isdict and item_constraint.get('type') == 'object':
""" We need to create a ProtocolBase object for this anonymous definition"""
uri = "{0}_{1}".format(name, "<anonymous_list_type>")
item_constraint = klassbuilder.construct(
uri, item_constraint)
props['__itemtype__'] = item_constraint
strict = addl_constraints.pop('strict', False)
props['_strict_'] = strict
props.update(addl_constraints)
validator = type(str(name), (ArrayWrapper, ), props)
return validator
def create(name, item_constraint=None, **addl_constraints):
""" Create an array validator based on the passed in constraints.
If item_constraint is a tuple, it is assumed that tuple validation
is being performed. If it is a class or dictionary, list validation
will be performed. Classes are assumed to be subclasses of ProtocolBase,
while dictionaries are expected to be basic types ('string', 'number', ...).
addl_constraints is expected to be key-value pairs of any of the other
constraints permitted by JSON Schema v4.
"""
logger.debug(
fmt(
"Constructing ArrayValidator with {} and {}",
item_constraint,
addl_constraints,
)
)
from python_jsonschema_objects import classbuilder
klassbuilder = addl_constraints.pop(
"classbuilder", None
) # type: python_jsonschema_objects.classbuilder.ClassBuilder
props = {}
if item_constraint is not None:
if isinstance(item_constraint, (tuple, list)):
for i, elem in enumerate(item_constraint):
isdict = isinstance(elem, (dict,))
isklass = isinstance(elem, type) and util.safe_issubclass(
elem, (classbuilder.ProtocolBase, classbuilder.LiteralValue)
)
if not any([isdict, isklass]):
raise TypeError(
"Item constraint (position {0}) is not a schema".format(i)
)
elif isinstance(
item_constraint, (classbuilder.TypeProxy, classbuilder.TypeRef)
):
pass
elif util.safe_issubclass(item_constraint, ArrayWrapper):
pass
else:
isdict = isinstance(item_constraint, (dict,))
isklass = isinstance(item_constraint, type) and util.safe_issubclass(
item_constraint,
(classbuilder.ProtocolBase, classbuilder.LiteralValue),
)
if not any([isdict, isklass]):
raise TypeError("Item constraint is not a schema")
if isdict and "$ref" in item_constraint:
if klassbuilder is None:
raise TypeError(
"Cannot resolve {0} without classbuilder".format(
item_constraint["$ref"]
)
)
item_constraint = klassbuilder.resolve_type(
item_constraint["$ref"], name
)
elif isdict and item_constraint.get("type") == "array":
# We need to create a sub-array validator.
item_constraint = ArrayWrapper.create(
name + "#sub",
item_constraint=item_constraint["items"],
addl_constraints=item_constraint,
)
elif isdict and "oneOf" in item_constraint:
# We need to create a TypeProxy validator
uri = "{0}_{1}".format(name, "<anonymous_list_type>")
type_array = klassbuilder.construct_objects(
item_constraint["oneOf"], uri
)
item_constraint = classbuilder.TypeProxy(type_array)
elif isdict and item_constraint.get("type") == "object":
""" We need to create a ProtocolBase object for this anonymous definition"""
uri = "{0}_{1}".format(name, "<anonymous_list_type>")
item_constraint = klassbuilder.construct(uri, item_constraint)
props["__itemtype__"] = item_constraint
strict = addl_constraints.pop("strict", False)
props["_strict_"] = strict
props.update(addl_constraints)
validator = type(str(name), (ArrayWrapper,), props)
return validator