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"""
TODO:
"""
__all__ = ['Error', 'TypeCheckError', 'SubjectTypeError',
'PredicateTypeError', 'ObjectTypeError', 'ContextTypeError',
'ParserError']
class Error(Exception):
"""Base class for rdflib exceptions."""
def __init__(self, msg=None):
Exception.__init__(self, msg)
self.msg = msg
class TypeCheckError(Error):
"""Parts of assertions are subject to type checks."""
def __init__(self, node):
Error.__init__(self, node)
self.type = type(node)
self.node = node
class SubjectTypeError(TypeCheckError):
"""Subject of an assertion must be an instance of URIRef."""
def __init__(self, node):
TypeCheckError.__init__(self, node)
self.msg = "Subject must be instance of URIRef or BNode: %s(%s)" \
% (self.node, self.type)
class PredicateTypeError(TypeCheckError):
"""Predicate of an assertion must be an instance of URIRef."""
def __init__(self, node):
TypeCheckError.__init__(self, node)
self.msg = "Predicate must be a URIRef instance: %s(%s)" \
% (self.node, self.type)
class ObjectTypeError(TypeCheckError):
"""Object of an assertion must be an instance of URIRef, Literal,
or BNode."""
def __init__(self, node):
TypeCheckError.__init__(self, node)
self.msg = "\
Object must be instance of URIRef, Literal, or BNode: %s(%s)" % \
(self.node, self.type)
class ContextTypeError(TypeCheckError):
"""Context of an assertion must be an instance of URIRef."""
def __init__(self, node):
TypeCheckError.__init__(self, node)
self.msg = "Context must be instance of URIRef or BNode: %s(%s)" \
% (self.node, self.type)
class ParserError(Error):
"""RDF Parser error."""
def __init__(self, msg):
Error.__init__(self, msg)
self.msg = msg
def __str__(self):
return self.msg
class UniquenessError(Error):
"""A uniqueness assumption was made in the context, and that is not true"""
def __init__(self, values):
Error.__init__(self, "\
Uniqueness assumption is not fulfilled. Multiple values are: %s" % values)
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