EOQualifierComparison
(informal protocol)
Declared in:
- EOControl/EOQualifier.h
Protocol Description
The EOQualifierComparison informal protocol defines methods for comparing values. These methods are used for evaluating qualifiers in memory.
| Note: This interface doesn't exist in the Yellow Box package, com.apple.yellow.eocontrol |
Though declared for NSObject, most of these methods work properly only with value classes: NSString, NSDate, NSNumber, NSDecimalNumber, and EONull.
Method Types
- Testing value objects
- - doesContain:
- - isEqualTo:
- - isGreaterThan:
- - isGreaterThan:
- - isLessThan:
- - isLessThanOrEqualTo:
- - isLike:
- - isCaseInsensitiveLike:
- - isNotEqualTo:
Instance Methods
doesContain:
- (BOOL)doesContain:(id)anObject
YES if
the receiver contains anObject, NO if
it doesn't. NSObject's implementation of this method returns YES only
if the receiver is a kind of NSArray and contains anObject.
In all other cases it returns NO.isCaseInsensitiveLike:
- (BOOL)isCaseInsensitiveLike:(NSString
*)anObject
YES if
the receiver is a case-insensitive match for anObject, NO if
it isn't. See "Using Wildcards and the like Operator" on page 266 for the wildcard characters allowed.isEqualTo:
- (BOOL)isEqualTo:(id)anObject
YES if
the receiver is equal to anObject, NO if
it isn't. NSObject's implementation invokes isEqual: and
returns the result.isGreaterThan:
- (BOOL)isGreaterThan:(id)anObject
YES if
the receiver is greater than anObject, NO if
it isn't. NSObject's implementation invokes compare: and
returns YES if the result
is NSOrderedDescending.isGreaterThanOrEqualTo:
- (BOOL)isGreaterThanOrEqualTo:(id)anObject
YES if
the receiver is greater than or equal to anObject, NO if
it isn't. NSObject's implementation invokes compare: and returns YES if
the result is NSOrderedAscending.isLessThan:
- (BOOL)isLessThan:(id)anObject
YES if
the receiver is less than anObject, NO if
it isn't. NSObject's implementation invokes compare: and returns YES if
the result is NSOrderedAscending.isLessThanOrEqualTo:
- (BOOL)isLessThanOrEqualTo:(id)anObject
YES if
the receiver is less than or equal to anObject, NO if
it isn't. NSObject's implementation invokes compare: and returns YES if
the result is NSOrderedAscending or NSOrderedSame.isLike:
- (BOOL)isLike:(NSString
*)aString
YES if
the receiver matches aString according
to the semantics of the SQL like comparison operator, NO if
it doesn't. See "Using Wildcards and the like Operator" on page 266 for the wildcard characters allowed. NSObject's
implementation returns NO;
NSString's performs a proper comparison.isNotEqualTo:
- (BOOL)isNotEqualTo:(id)anObject
YES if
the receiver is not equal to anObject, NO if
it is. NSObject's implementation invokes isEqual:,
inverts the result, and returns it.