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Add support for the use of nesting key attributes as the primaryKey in managed mappings.

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This bug was causing duplication of objects in the store due to failed lookup of
existing objects. Added fix and test coverage for the use-case.
This commit is contained in:
Blake Watters
2011-10-05 10:50:52 -04:00
parent a4d84aadf3
commit 586034bae4
9 changed files with 86 additions and 26 deletions
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22
Code/CoreData/RKManagedObjectMapping.m
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@@ -23,6 +23,11 @@
#import "RKObjectManager.h"
#import "RKManagedObjectStore.h"
#import "RKObjectPropertyInspector+CoreData.h"
#import "../Support/RKLog.h"
// Set Logging Component
#undef RKLogComponent
#define RKLogComponent lcl_cRestKitCoreData
@implementation RKManagedObjectMapping
@@ -106,7 +111,7 @@
NSString* primaryKeyAttribute;
NSEntityDescription* entity = [self entity];
RKObjectAttributeMapping* primaryKeyAttributeMapping = nil;
RKObjectAttributeMapping* primaryKeyAttributeMapping = nil;
primaryKeyAttribute = [self primaryKeyAttribute];
if (primaryKeyAttribute) {
@@ -119,11 +124,16 @@
}
}
// Get the primary key value out of the mappable data (if any)
NSString* keyPathForPrimaryKeyElement = primaryKeyAttributeMapping.sourceKeyPath;
if (keyPathForPrimaryKeyElement) {
primaryKeyValue = [mappableData valueForKeyPath:keyPathForPrimaryKeyElement];
}
// Get the primary key value out of the mappable data (if any)
if ([primaryKeyAttributeMapping isMappingForKeyOfNestedDictionary]) {
RKLogDebug(@"Detected use of nested dictionary key as primaryKey attribute...");
primaryKeyValue = [[mappableData allKeys] lastObject];
} else {
NSString* keyPathForPrimaryKeyElement = primaryKeyAttributeMapping.sourceKeyPath;
if (keyPathForPrimaryKeyElement) {
primaryKeyValue = [mappableData valueForKeyPath:keyPathForPrimaryKeyElement];
}
}
}
// If we have found the primary key attribute & value, try to find an existing instance to update