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* Metadata mapping is implemented via an `NSProxy` object that stands in for the `sourceObject` of each `RKMappingOperation` * Key paths that are prefixed with `@metadata.` are mapped against the `metadata` dictionary of the operation, else they hit the `sourceObject`. * Metadata is implemented by merging a dictionary of data in from `RKObjectRequestOperation`, through to `RKResponseMapperOperation`, into `RKMapperOperation`, and all the way down into the `RKMappingOperation`, where it is available to each object. By convention, metdata is namespaced into subdictionaries.
40 lines
1.3 KiB
Objective-C
40 lines
1.3 KiB
Objective-C
//
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// RKAttributeMapping.m
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// RestKit
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//
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// Created by Blake Watters on 4/30/11.
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// Copyright (c) 2009-2012 RestKit. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#import "RKAttributeMapping.h"
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@interface RKAttributeMapping ()
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@property (nonatomic, copy, readwrite) NSString *sourceKeyPath;
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@property (nonatomic, copy, readwrite) NSString *destinationKeyPath;
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@end
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@implementation RKAttributeMapping
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+ (instancetype)attributeMappingFromKeyPath:(NSString *)sourceKeyPath toKeyPath:(NSString *)destinationKeyPath
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{
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NSAssert(sourceKeyPath || destinationKeyPath, @"Both the source and destination key paths cannot be nil");
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RKAttributeMapping *attributeMapping = [self new];
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attributeMapping.sourceKeyPath = sourceKeyPath;
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attributeMapping.destinationKeyPath = destinationKeyPath;
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return attributeMapping;
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}
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@end
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