CoreDataUtilities.h

/* Declarations of utility functions for the GNUstep Core Data framework.
   Copyright (C) 2005 Free Software Foundation, Inc.
 
   Written by:  Saso Kiselkov <diablos@manga.sk>
   Date: August 2005
 
   This file is part of the GNUstep Core Data framework.
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
 
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111 USA.
*/
 
#ifndef _CoreDataUtilities_h_
#define _CoreDataUtilities_h_
 
@class NSError, NSString;

static inline void
SetNonNullError (NSError ** ptr, NSError * error)
{
  if (ptr != NULL)
    {
      *ptr = error;
    }
}

static inline BOOL
ObjectMatchedByFetchRequest (NSManagedObject * object,
                             NSFetchRequest * fetchRequest)
{
  NSEntityDescription * entity = [fetchRequest entity];
  NSPredicate * predicate = [fetchRequest predicate];
  NSArray * affectedStores = [fetchRequest affectedStores];
 
  if (entity != nil)
    {
      if ([[object entity] isEqual: entity] == NO)
        {
          return NO;
        }
    }
 
  if (predicate != nil)
    {
      if ([predicate evaluateWithObject: object] == NO)
        {
          return NO;
        }
    }
 
  if (affectedStores != nil)
    {
      if ([affectedStores containsObject: [[object objectID]
        persistentStore]] == NO)
        {
          return NO;
        }
    }
 
  return YES;
}
 
#endif // _CoreDataUtilities_h_