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Reimplement connection matchers and add test case.

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Charlie Savage
2012-12-23 21:58:59 -07:00
parent 913b8a1b9e
commit a67bb48ece
3 changed files with 57 additions and 0 deletions
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6
Code/CoreData/RKConnectionDescription.h
View File

@@ -19,6 +19,7 @@
//
#import <CoreData/CoreData.h>
#import "RKDynamicMappingMatcher.h"
/**
The `RKConnectionDescription` class describes a means for connecting a Core Data relationship. Connections can be established either by foreign key, in which case one or more attribute values on the source entity correspond to matching values on the destination entity, or by key path, in which case a key path is evaluated on the object graph to obtain a value for the relationship. Connection objects are used by instances of `RKRelationshipConnectionOperation` to connect a relationship of a given managed object.
@@ -156,4 +157,9 @@
*/
@property (nonatomic, copy) NSPredicate *predicate;
/**
An optional matcher that filters the source object to be connected.
*/
@property (nonatomic, strong) RKDynamicMappingMatcher* matcher;
@end

4
Code/CoreData/RKRelationshipConnectionOperation.m
View File

@@ -139,6 +139,10 @@ static NSDictionary *RKConnectionAttributeValuesWithObject(RKConnectionDescripti
- (id)findConnected
{
id connectionResult = nil;
if (self.connection.matcher && ![self.connection.matcher matches:self.managedObject])
return nil;
if ([self.connection isForeignKeyConnection]) {
NSDictionary *attributeValues = RKConnectionAttributeValuesWithObject(self.connection, self.managedObject);
NSSet *managedObjects = [self.managedObjectCache managedObjectsWithEntity:[self.connection.relationship destinationEntity]

47
Tests/Logic/CoreData/RKRelationshipConnectionOperationTest.m
View File

@@ -256,4 +256,51 @@
expect(secondChild.friends).to.equal(expectedFriends);
}
- (void)testConnectionMatcher
{
RKHuman *human = [RKTestFactory insertManagedObjectForEntityForName:@"Human" inManagedObjectContext:nil withProperties:nil];
human.sex = @"female";
RKCat *asia = [RKTestFactory insertManagedObjectForEntityForName:@"Cat" inManagedObjectContext:nil withProperties:nil];
asia.sex = @"female";
RKCat *lola = [RKTestFactory insertManagedObjectForEntityForName:@"Cat" inManagedObjectContext:nil withProperties:nil];
lola.sex = @"female";
RKCat *roy = [RKTestFactory insertManagedObjectForEntityForName:@"Cat" inManagedObjectContext:nil withProperties:nil];
roy.sex = @"male";
RKEntityMapping *mapping = [RKEntityMapping mappingForEntityForName:@"Human" inManagedObjectStore:[RKTestFactory managedObjectStore]];
[mapping addConnectionForRelationship:@"cats" connectedBy:@"sex"];
RKFetchRequestManagedObjectCache *managedObjectCache = [RKFetchRequestManagedObjectCache new];
RKConnectionDescription *connection = [mapping connectionForRelationship:@"cats"];
RKEntityMapping *catMapping = [RKEntityMapping mappingForEntityForName:@"Cat" inManagedObjectStore:[RKTestFactory managedObjectStore]];
connection.matcher = [[RKDynamicMappingMatcher alloc] initWithKeyPath:@"sex" expectedValue:@"male" objectMapping:catMapping];
RKRelationshipConnectionOperation *operation = [[RKRelationshipConnectionOperation alloc] initWithManagedObject:human connection:connection managedObjectCache:managedObjectCache];
[operation start];
assertThat(human.cats, hasCountOf(0));
}
- (void)testConnectionPredicate
{
RKHuman *human = [RKTestFactory insertManagedObjectForEntityForName:@"Human" inManagedObjectContext:nil withProperties:nil];
human.sex = @"female";
RKCat *asia = [RKTestFactory insertManagedObjectForEntityForName:@"Cat" inManagedObjectContext:nil withProperties:@{@"birthYear": @2011}];
asia.sex = @"female";
RKCat *lola = [RKTestFactory insertManagedObjectForEntityForName:@"Cat" inManagedObjectContext:nil withProperties:@{@"birthYear": @2012}];
lola.sex = @"female";
RKEntityMapping *mapping = [RKEntityMapping mappingForEntityForName:@"Human" inManagedObjectStore:[RKTestFactory managedObjectStore]];
[mapping addConnectionForRelationship:@"cats" connectedBy:@"sex"];
RKFetchRequestManagedObjectCache *managedObjectCache = [RKFetchRequestManagedObjectCache new];
RKConnectionDescription *connection = [mapping connectionForRelationship:@"cats"];
connection.predicate = [NSPredicate predicateWithFormat:@"birthYear = 2011"];
RKRelationshipConnectionOperation *operation = [[RKRelationshipConnectionOperation alloc] initWithManagedObject:human connection:connection managedObjectCache:managedObjectCache];
[operation start];
assertThat(human.cats, hasCountOf(1));
assertThat(human.cats, hasItems(asia, nil));
}
@end