[Checkins] SVN: z3c.schema2xml/branches/combined-deserialization-errors/src/z3c/schema2xml/_ Provide combined reports of multiple errors within a single deserialization

[Christian Theune]

Log message for revision 104678:
  Provide combined reports of multiple errors within a single deserialization
  run.
  

Changed:
  U   z3c.schema2xml/branches/combined-deserialization-errors/src/z3c/schema2xml/__init__.py
  U   z3c.schema2xml/branches/combined-deserialization-errors/src/z3c/schema2xml/_schema2xml.py

-=-
Modified: z3c.schema2xml/branches/combined-deserialization-errors/src/z3c/schema2xml/__init__.py
===================================================================
--- z3c.schema2xml/branches/combined-deserialization-errors/src/z3c/schema2xml/__init__.py	2009-10-01 12:31:46 UTC (rev 104677)
+++ z3c.schema2xml/branches/combined-deserialization-errors/src/z3c/schema2xml/__init__.py	2009-10-01 12:38:27 UTC (rev 104678)
@@ -1,4 +1,5 @@
 from _schema2xml import IXMLGenerator
 from _schema2xml import serialize, serialize_to_tree
 from _schema2xml import deserialize, deserialize_from_tree
+from _schema2xml import DeserializationError
 from _schema2xml import GeneratedObject

Modified: z3c.schema2xml/branches/combined-deserialization-errors/src/z3c/schema2xml/_schema2xml.py
===================================================================
--- z3c.schema2xml/branches/combined-deserialization-errors/src/z3c/schema2xml/_schema2xml.py	2009-10-01 12:31:46 UTC (rev 104677)
+++ z3c.schema2xml/branches/combined-deserialization-errors/src/z3c/schema2xml/_schema2xml.py	2009-10-01 12:38:27 UTC (rev 104678)
@@ -24,12 +24,33 @@
     return etree.tostring(
         container, encoding=encoding, pretty_print=pretty_print)
 
+
+class DeserializationError(TypeError):
+    """Deserialization did not succeed.
+
+    The attribute `field_errors` contains a dictionary mapping field names to
+    an exception that occured.
+
+    """
+
+    def __init__(self, field_errors):
+        self.field_errors = field_errors
+
+
 def deserialize_from_tree(container, schema, instance):
+    errors = {}
+
     for element in container:
         field = schema[element.tag]
-        value = IXMLGenerator(field).input(element)
-        field.set(instance, value)
+        try:
+            value = IXMLGenerator(field).input(element)
+            field.set(instance, value)
+        except Exception, e:
+            errors[field.__name__] = e
 
+    if errors:
+        raise DeserializationError(errors)
+
     alsoProvides(instance, schema)
 
 def deserialize(xml, schema, instance):