#import <EOControl/EOControl.h>
#import <EOAccess/EOAccess.h>

@interface EOEditingContext (HSEOUtilities)
- (NSArray *)objectsMatchingAllValues: (NSArray *)values         // match ALL of these values
                               forKey: (NSString *)key           // for this key
                          entityNamed: (NSString *)entityName;   // on this entity

- (NSArray *)objectsMatchingValues: (NSArray *)values         // match these values
                            forKey: (NSString *)key           // for this key
                       entityNamed: (NSString *)entityName    // on this entity
                   requiredMatches: (int)minMatches;          // must match at least # values

- (void)invalidateObjectsOfClass:(Class)aClass;
@end

@interface EOQualifier (HSEOUtilities)
+ (EOQualifier *)andQualifierToMatchAllValues: (NSArray *)values forKey:(NSString *)key;
@end

@interface NSObject (HSMultipleObjects)
// remove multiple objects from a relationship
- (void)removeObjects: (NSArray *)objects fromBothSidesOfRelationshipWithKey: (NSString *)key;

// add multiple objects to a relationship
- (void)addObjects: (NSArray *)objects toBothSidesOfRelationshipWithKey: (NSString *)key;

// invalidate this object
- (void)invalidateObjectInEditingContext;
@end

@interface NSArray (HSMultipleObjects)
// add object to all elements in the receiver.
- (void)addObject: (id)object toBothSidesOfRelationshipWithKey:(NSString *)key;

// add object to all elements in the receiver.  uses -addObjects:toBothSidesOfRelationshipWithKey:
// ( HSMultipleObjects category on NSObject )
- (void)addObjects: (NSArray *)objects toBothSidesOfRelationshipWithKey:(NSString *)key;

// remove objects from all elements in the receiver.
- (void)removeObjects: (NSArray *)objects fromBothSidesOfRelationshipWithKey: (NSString *)key;
- (void)removeObject: (id)object fromBothSidesOfRelationshipWithKey: (NSString *)key;

// invalidate all objects in the receiver.
- (void)invalidateObjectsInEditingContext;
@end

@interface NSNumber (HSBoolExtension)
// Y == (BOOL)YES, N == (BOOL)NO
+ (NSNumber *)numberWithYesNoValue: (NSString *)aValue;
@end