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Added support for polymorphic object mapping (Github #105, #244). This enables you to dynamically map objects to different destination classes or using different mapping strategies via configuration or callbacks. See Docs/Object Mapping.md for details.

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Other changes include:
* Eliminated the RKObjectFactory protocol and implementations. Object mapping instances themselves are
now responsible for instantiating target objects for mapping.
* Introduced RKObjectAbstractMapping superclass for RKObjectMapping and RKObjectPolymorphicMapping.
* Updated example applications to use block object loaders (RKTwitter and RKTwitterCoreData)
* Refactored method signatures of RKObjectMapper, RKObjectMapping, and RKObjectMappingProvider to reflect the
existence of abstract mapping types. This was necessary to make polymorphic mappings integrate cleanly.
* Fixed overlap in RestKit error domains between network and object mapping. fixes #208
This commit is contained in:
Blake Watters
2011-07-30 16:00:36 -04:00
parent 072e1ee58b
commit 670234b775
64 changed files with 1411 additions and 601 deletions
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34
Code/ObjectMapping/RKObjectMapping.m
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@@ -8,6 +8,7 @@
#import "RKObjectMapping.h"
#import "RKObjectRelationshipMapping.h"
#import "../Support/RKLog.h"
// Constants
NSString* const RKObjectMappingNestingAttributeKeyName = @"<RK_NESTING_ATTRIBUTE>";
@@ -139,17 +140,17 @@ NSString* const RKObjectMappingNestingAttributeKeyName = @"<RK_NESTING_ATTRIBUTE
[self mapAttributesSet:attributeKeyPaths];
}
- (void)mapKeyPath:(NSString *)relationshipKeyPath toRelationship:(NSString*)keyPath withObjectMapping:(RKObjectMapping *)objectMapping serialize:(BOOL)serialize {
RKObjectRelationshipMapping* mapping = [RKObjectRelationshipMapping mappingFromKeyPath:relationshipKeyPath toKeyPath:keyPath objectMapping:objectMapping reversible:serialize];
- (void)mapKeyPath:(NSString *)relationshipKeyPath toRelationship:(NSString*)keyPath withMapping:(RKObjectAbstractMapping *)objectOrPolymorphicMapping serialize:(BOOL)serialize {
RKObjectRelationshipMapping* mapping = [RKObjectRelationshipMapping mappingFromKeyPath:relationshipKeyPath toKeyPath:keyPath withMapping:objectOrPolymorphicMapping reversible:serialize];
[self addRelationshipMapping:mapping];
}
- (void)mapKeyPath:(NSString *)relationshipKeyPath toRelationship:(NSString*)keyPath withObjectMapping:(RKObjectMapping *)objectMapping {
[self mapKeyPath:relationshipKeyPath toRelationship:keyPath withObjectMapping:objectMapping serialize:YES];
- (void)mapKeyPath:(NSString *)relationshipKeyPath toRelationship:(NSString*)keyPath withMapping:(RKObjectAbstractMapping*)objectOrPolymorphicMapping {
[self mapKeyPath:relationshipKeyPath toRelationship:keyPath withMapping:objectOrPolymorphicMapping serialize:YES];
}
- (void)mapRelationship:(NSString*)relationshipKeyPath withObjectMapping:(RKObjectMapping*)objectMapping {
[self mapKeyPath:relationshipKeyPath toRelationship:relationshipKeyPath withObjectMapping:objectMapping];
- (void)mapRelationship:(NSString*)relationshipKeyPath withMapping:(RKObjectAbstractMapping*)objectOrPolymorphicMapping {
[self mapKeyPath:relationshipKeyPath toRelationship:relationshipKeyPath withMapping:objectOrPolymorphicMapping];
}
- (void)mapKeyPath:(NSString*)sourceKeyPath toAttribute:(NSString*)destinationKeyPath {
@@ -157,12 +158,12 @@ NSString* const RKObjectMappingNestingAttributeKeyName = @"<RK_NESTING_ATTRIBUTE
[self addAttributeMapping:mapping];
}
- (void)hasMany:(NSString*)keyPath withObjectMapping:(RKObjectMapping*)objectMapping {
[self mapRelationship:keyPath withObjectMapping:objectMapping];
- (void)hasMany:(NSString*)keyPath withMapping:(RKObjectAbstractMapping*)objectOrPolymorphicMapping {
[self mapRelationship:keyPath withMapping:objectOrPolymorphicMapping];
}
- (void)hasOne:(NSString*)keyPath withObjectMapping:(RKObjectMapping*)mapping {
[self mapRelationship:keyPath withObjectMapping:mapping];
- (void)hasOne:(NSString*)keyPath withMapping:(RKObjectAbstractMapping*)objectOrPolymorphicMapping {
[self mapRelationship:keyPath withMapping:objectOrPolymorphicMapping];
}
- (void)removeAllMappings {
@@ -189,8 +190,13 @@ NSString* const RKObjectMappingNestingAttributeKeyName = @"<RK_NESTING_ATTRIBUTE
}
for (RKObjectRelationshipMapping* relationshipMapping in self.relationshipMappings) {
if (relationshipMapping.reversible) {
[inverseMapping mapKeyPath:relationshipMapping.destinationKeyPath toRelationship:relationshipMapping.sourceKeyPath withObjectMapping:[relationshipMapping.objectMapping inverseMappingAtDepth:depth+1]];
if (relationshipMapping.reversible) {
RKObjectAbstractMapping* mapping = relationshipMapping.mapping;
if (! [mapping isKindOfClass:[RKObjectMapping class]]) {
RKLogWarning(@"Unable to generate inverse mapping for relationship '%@': %@ relationships cannot be inversed.", relationshipMapping.sourceKeyPath, NSStringFromClass([mapping class]));
continue;
}
[inverseMapping mapKeyPath:relationshipMapping.destinationKeyPath toRelationship:relationshipMapping.sourceKeyPath withMapping:[(RKObjectMapping*)mapping inverseMappingAtDepth:depth+1]];
}
}
@@ -241,4 +247,8 @@ NSString* const RKObjectMappingNestingAttributeKeyName = @"<RK_NESTING_ATTRIBUTE
return nil;
}
- (id)mappableObjectForData:(id)mappableData {
return [[self.objectClass new] autorelease];
}
@end