exception package added, support throughout

1 files changed, 41 insertions, 0 deletions

diff --git a/lib/sqlalchemy/exceptions.py b/lib/sqlalchemy/exceptions.py
new file mode 100644
index 000000000..6883293ec
--- /dev/null
+++ b/lib/sqlalchemy/exceptions.py
@@ -0,0 +1,41 @@
+# exceptions.py - exceptions for SQLAlchemy
+# Copyright (C) 2005,2006 Michael Bayer mike_mp@zzzcomputing.com
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: http://www.opensource.org/licenses/mit-license.php
+
+
+class SQLAlchemyError(Exception):
+    """generic error class"""
+    pass
+    
+class SQLError(SQLAlchemyError):
+    """raised when the execution of a SQL statement fails.  includes accessors
+    for the underlying exception, as well as the SQL and bind parameters"""
+    def __init__(self, statement, params, orig):
+        SQLAlchemyError.__init__(self, "(%s) %s"% (orig.__class__.__name__, str(orig)))
+        self.statement = statement
+        self.params = params
+        self.orig = orig
+
+class ArgumentError(SQLAlchemyError):
+    """raised for all those conditions where invalid arguments are sent to constructed
+    objects.  This error generally corresponds to construction time state errors."""
+    pass
+    
+class CommitError(SQLAlchemyError):
+    """raised when an invalid condition is detected upon a commit()"""
+    pass
+    
+class InvalidRequestError(SQLAlchemyError):
+    """sqlalchemy was asked to do something it cant do, return nonexistent data, etc.
+    This error generally corresponds to runtime state errors."""
+    pass
+
+class AssertionError(SQLAlchemyError):
+    """corresponds to internal state being detected in an invalid state"""
+    pass
+    
+class DBAPIError(SQLAlchemyError):
+    """something weird happened with a particular DBAPI version"""
+    pass
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