added decorator

dbzero/dbzero/decorators.py

@@ -31,6 +31,20 @@ def wrapper(*args, **kwargs):
     wrapper.__db0_fulltext = True
     return wrapper
 
+def table_view(f, operator=None):
+    """The table_view decorator marks a specific function or method as generating a table view. The following properties apply:
+        - First result represents the table header
+        - All other results (rows) are key-decorated (i.e. return tuples with unique identifiers) - see Cell Editor
+        - Optional operator may be defined to allow cell editions (see Cell Operator)
+    """
+    @functools.wraps(f)
+    def wrapper(*args, **kwargs):
+        retval = f(*args, **kwargs)
+        return retval
+    # Immutable query if True and immutable parameter if false
+    wrapper.__db0_table_view = True
+    return wrapper
+
 def is_immutable(f):
     return hasattr(f, '__db0_immutable_query')
 
@@ -46,6 +60,9 @@ def is_query(f):
 def is_fulltext(f):
     return hasattr(f, '__db0_fulltext')
 
+def is_table_view(f):
+    return hasattr(f, '__db0_table_view')
+
 def _get_function_context(f):
     context = sys.modules[f.__module__]
     path = f.__qualname__.split('.')