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//
// ORSFilterTransformer.m
// Canary
//
// Created by Nicholas Toumpelis on 12/04/2009.
// Copyright 2009 Ocean Road Software. All rights reserved.
//
// Version 0.7
#import "ORSFilterTransformer.h"
@implementation ORSFilterTransformer
+ (Class) transformedValueClass {
return [NSDictionary class];
}
+ (BOOL) allowsReverseTransformation {
return YES;
}
- (id) transformedValue:(id)value {
if (value == nil)
return nil;
NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];
ORSFilter *filterValue = (ORSFilter *)value;
if ([value respondsToSelector:@selector(active)]) {
[dictionary setObject:[NSNumber numberWithBool:filterValue.active]
forKey:@"ORSCanaryFilterActive"];
} else {
[NSException raise: NSInternalInconsistencyException
format: @"Value (%@) does not respond to -active.",
[value class]];
}
if ([value respondsToSelector:@selector(filterName)]) {
[dictionary setObject:filterValue.filterName
forKey:@"ORSCanaryFilterName"];
} else {
[NSException raise: NSInternalInconsistencyException
format: @"Value (%@) does not respond to -filterName.",
[value class]];
}
if ([value respondsToSelector:@selector(predicate)]) {
[dictionary setObject:[filterValue.predicate predicateFormat]
forKey:@"ORSCanaryFilterPredicate"];
} else {
[NSException raise: NSInternalInconsistencyException
format: @"Value (%@) does not respond to -predicate.",
[value class]];
}
return dictionary;
}
- (id) reverseTransformedValue:(id)value {
if (value == nil)
return nil;
NSDictionary *dictionary = (NSDictionary *)value;
ORSFilter *filter = [[ORSFilter alloc] init];
if ([value respondsToSelector:@selector(objectForKey:)]) {
filter.active = [(NSNumber *)[dictionary objectForKey:@"ORSCanaryFilterActive"] boolValue];
} else {
[NSException raise: NSInternalInconsistencyException
format: @"Value (%@) does not respond to -objectForKey:.",
[value class]];
}
if ([value respondsToSelector:@selector(objectForKey:)]) {
filter.filterName = [dictionary
objectForKey:@"ORSCanaryFilterName"];
}
if ([value respondsToSelector:@selector(objectForKey:)]) {
NSPredicate *predicate = [NSPredicate predicateWithFormat:[dictionary
objectForKey:@"ORSCanaryFilterPredicate"]];
filter.predicate = predicate;
}
return filter;
}
@end