2.0.0b8

- Collection[InvalidId] now raises UnknownCollection [ Fixed #113 ]
- MyCapytain Errors are now decendent of MyCapytainException

MyCapytain/__init__.py

@@ -9,4 +9,4 @@
 
 """
 
-__version__ = "2.0.0b7"
+__version__ = "2.0.0b8"

MyCapytain/errors.py

@@ -9,44 +9,54 @@
 """
 
 
-class DuplicateReference(SyntaxWarning):
+class MyCapytainException(BaseException):
+    """ Namespacing errors
+    """
+
+
+class DuplicateReference(SyntaxWarning, MyCapytainException):
     """ Error generated when a duplicate is found in Reference
     """
 
 
-class RefsDeclError(Exception):
+class RefsDeclError(Exception, MyCapytainException):
     """ Error issued when an the refsDecl does not succeed in xpath (no results)
     """
     pass
 
 
-class InvalidSiblingRequest(Exception):
+class InvalidSiblingRequest(Exception, MyCapytainException):
     """ This error is thrown when one attempts to get previous or next passage on a passage with a range of different
     depth, ex. : 1-2.25
     """
     pass
 
 
-class InvalidURN(Exception):
+class InvalidURN(Exception, MyCapytainException):
     """ This error is thrown when URN are not valid
     """
 
 
-class MissingAttribute(Exception):
+class MissingAttribute(Exception, MyCapytainException):
     """ This error is thrown when an attribute is not present in the Object (missing at startup)
     """
 
 
-class UnknownObjectError(ValueError):
+class UnknownObjectError(ValueError, MyCapytainException):
     """ This error is thrown when an object does not exist in an inventory or in an API
     """
 
 
-class UnknownNamespace(ValueError):
+class UnknownNamespace(ValueError, MyCapytainException):
     """ This error is thrown when a namespace is unknown
     """
 
 
-class UndispatchedTextError(Exception):
+class UndispatchedTextError(Exception, MyCapytainException):
     """ This error is thrown when a text has not been dispatched by a dispatcher
     """
+
+
+class UnknownCollection(KeyError, MyCapytainException):
+    """ A collection is unknown to its ancestor
+    """

MyCapytain/resources/prototypes/metadata.py

@@ -8,6 +8,7 @@
 """
 
 from MyCapytain.common.metadata import Metadata
+from MyCapytain.errors import UnknownCollection
 from MyCapytain.common.utils import Subgraph, LiteralToDict
 from MyCapytain.common.constants import NAMESPACES, RDFLIB_MAPPING, Mimetypes, Exportable, GRAPH
 from rdflib import URIRef, RDF, Literal, Graph, RDFS
@@ -208,7 +209,7 @@ def __getitem__(self, item):
         for obj in self.descendants + [self]:
             if obj.id == item:
                 return obj
-        raise KeyError("%s is not part of this object" % item)
+        raise UnknownCollection("%s is not part of this object" % item)
 
     def __contains__(self, item):
         """ Retrieve an item by its ID in the tree of a collection