Finished split into more logical components. Library now copies Headers to Build/RestKit and you can selectively link against the components your app needs. libRestKit.a contains everything from the core library.

Code/ObjectMapping/RKObjectMapper.h

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+//
+//  RKObjectMapper.h
+//  RestKit
+//
+//  Created by Blake Watters on 3/4/10.
+//  Copyright 2010 Two Toasters. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "RKObjectMappable.h"
+#import "RKObjectPropertyInspector.h"
+#import "../Support/RKParser.h"
+
+/**
+ * Define the object mapping formats
+ */
+typedef enum {
+	RKMappingFormatXML = 0,
+	RKMappingFormatJSON
+} RKMappingFormat;
+
+@interface RKObjectMapper : NSObject {
+	NSMutableDictionary* _elementToClassMappings;
+	RKMappingFormat _format;
+	RKObjectPropertyInspector* _inspector;
+	NSArray* _dateFormats;
+	NSTimeZone* _remoteTimeZone;
+	NSTimeZone* _localTimeZone;
+}
+
+/**
+ * The format the mapper is using
+ */
+@property(nonatomic, assign) RKMappingFormat format;
+
+/**
+ * An array of date format strings to attempt to parse mapped date properties with
+ *
+ * Initialized with a default pair of timestamp and date strings suitable for
+ * parseing time and date objects returned from Rails applications
+ */
+@property(nonatomic, retain) NSArray* dateFormats;
+
+/**
+ * The time zone of the remote system. Date strings pulled from the remote source
+ * will be considered to be local to this time zone when mapping.
+ *
+ * Defaults to UTC
+ */
+@property(nonatomic, retain) NSTimeZone* remoteTimeZone;
+
+/**
+ * The target time zone to map dates to.
+ *
+ * Defaults to the local time zone
+ */
+@property(nonatomic, retain) NSTimeZone* localTimeZone;
+
+/**
+ * Register a mapping for a given class for an XML element with the given tag name
+ * will blow up if the class does not respond to elementToPropertyMappings and elementToRelationshipMappings
+ */
+// TODO: Should be forKeyPath or have a sister forKeyPath method
+- (void)registerClass:(Class<RKObjectMappable>)aClass forElementNamed:(NSString*)elementName;
+
+///////////////////////////////////////////////////////////////////////////////
+// Core Mapping API
+
+/**
+ * Digests a string into an object graph and returns mapped model objects from the objects
+ * serialized in the string
+ */
+- (id)mapFromString:(NSString*)string;
+
+/**
+ * Sets the properties and relationships serialized in the string into the model instance
+ * provided
+ */
+- (void)mapObject:(id)model fromString:(NSString*)string;
+
+///////////////////////////////////////////////////////////////////////////////
+// Object Mapping API
+
+/**
+ * Sets the properties and relationships serialized in the dictionary into the model instance
+ * provided
+ */
+- (void)mapObject:(id)model fromDictionary:(NSDictionary*)dictionary;
+
+/**
+ * Returns mapped model(s) from the data serialized in the dictionary into the model instance
+ * provided
+ */
+- (id)mapObjectFromDictionary:(NSDictionary*)dictionary;
+
+/**
+ * Constructs an array of mapped model objects from an array of dictionaries
+ * containing serialized objects
+ */
+- (NSArray*)mapObjectsFromArrayOfDictionaries:(NSArray*)array;
+
+///////////////////////////////////////////////////////////////////////////////
+// Non-element based object mapping
+
+/**
+ * Map the objects in a given payload string to a particular object class
+ */
+- (id)mapFromString:(NSString *)string toClass:(Class)class;
+
+/**
+ * Map an array of object dictionary representations to instances of a particular
+ * object class
+ */
+- (NSArray*)mapObjectsFromArrayOfDictionaries:(NSArray*)array toClass:(Class)class;
+
+@end