major cleanup to BaseSqmToSqlAstConverter

this class was full of EXTREMELY long methods and lots of typecasts

Signed-off-by: Gavin King <[email protected]>

Author: gavinking

hibernate-core/src/main/java/org/hibernate/query/sqm/mutation/internal/MultiTableSqmMutationConverter.java

@@ -115,7 +115,7 @@ public TableGroup getMutatingTableGroup() {
 		return mutatingTableGroup;
 	}
 
-	@Override
+	@Override // promote protected to public
 	public Stack<SqlAstProcessingState> getProcessingStateStack() {
 		return super.getProcessingStateStack();
 	}