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    <p>Why not add mappings for classes?</p> <pre><code>+ (NSDictionary *)mapClasses { return @{ @"category": [Category class], // ... }; } </code></pre> <p>For non-container properties, you could even do <a href="https://stackoverflow.com/questions/769319/how-to-detect-a-property-return-type-in-objective-c">runtime introspection of properties</a> to avoid redundant mappings.</p> <p>Container properties could map to special wrapper objects:</p> <pre><code>[OMContainer arrayWithClass:Key.class], @"keys", [OMContainer dicionaryWithKeyClass:ScopeID.class valueClass:Scope.class], @"possibleScopes", </code></pre> <p>Or even blocks for dynamic selection of types:</p> <pre><code>[OMDynamicType typeWithBlock:^(id obj){ if ([obj isKindOfClass:NSString.class] &amp;&amp; [obj hasPrefix:@"foo"]) return Foo.class; else return Bar.class; }], @"foo", </code></pre> <p>Implementing this could go something like:</p> <pre><code>+ (NSArray *)parseData:(NSData*)jsonData intoObjectsOfType:(Class)objectClass { NSArray *parsed = /* ... */ NSMutableArray *decoded = [NSMutableArray array]; for (id obj in parsed) { [decoded addObject:[self decodeRawObject:parsed intoObjectOfType:objectClass]]; } return decoded; } + (id)decodeRawObject:(NSDictionary *)dict intoObjectOfType:(Class)objectClass { // ... NSDictionary *jsonKeys = objectClass.mapProperties; NSDictionary *jsonClasses = objectClass.mapClasses; for (NSString *key in jsonKeys.allKeys) { NSString *objectProperty = jsonKeys[key]; NSString *value = dict[key]; if (value) { id klass = jsonClasses[key]; if (!klass) { [entity setValue:value forKey:objectProperty]; } else if (klass == klass.class) { [entity setValue:[self decodeRawObject:value intoObjectOfType:klass] forKey:objectProperty]; } else if (/* check for containers and blocks */) { // ... } } } // ... } </code></pre>
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    1. USWilbur Vandrsmith
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    1. COThank you Wilbur! Very good stuff, enough to get me going. I like your idea of just returning a class in the dictionary, makes it easy to do the introspection.
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