CODEWITHSUNDEEP
iosobjective-ccore-datarestkitrestkit-0.20
Khawar
Khawar

Reputation: 9241

RestKit - Relationship mapping to same entity creates infine loop

I need to create relationship of an entity to the same entity. Basically it is Meetings entity that may have any ParantMeeting.

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This is how I am creating relationship.

- (RKEntityMapping *)meetingsMapping {

    RKEntityMapping *meetingsMapping = [RKEntityMapping mappingForEntityForName:@"DBMeetings" inManagedObjectStore:objectManager.managedObjectStore];
    meetingsMapping.setDefaultValueForMissingAttributes = NO;
    meetingsMapping.deletionPredicate = [NSPredicate predicateWithFormat:@"shouldBeDeleted = 1"];
    [meetingsMapping setModificationAttributeForName:@"updated_at"];
    meetingsMapping.identificationAttributes = @[@"id"];

    [meetingsMapping addAttributeMappingsFromDictionary:@{
                                                          @"id": @"id",
                                                          @"title": @"title",

                                                          @"start_time": @"start_time",
                                                          @"finish_time": @"finish_time",

                                                          @"lock": @"lock",
                                                          @"location": @"location",
                                                          @"sample": @"sample",

                                                          @"deleted": @"shouldBeDeleted",

                                                          @"created_at": @"created_at",
                                                          @"updated_at": @"updated_at",
                                                          @"follow_up_id": @"follow_up_id",
                                                          @"total_topics": @"total_topics",
                                                          }];

    [meetingsMapping addRelationshipMappingWithSourceKeyPath:@"tags" mapping:[self tagsMapping]];
    [meetingsMapping addRelationshipMappingWithSourceKeyPath:@"required_participants" mapping:[self contactsMapping]];
    [meetingsMapping addRelationshipMappingWithSourceKeyPath:@"optional_participants" mapping:[self contactsMapping]];
    [meetingsMapping addRelationshipMappingWithSourceKeyPath:@"readonly_participants" mapping:[self contactsMapping]];
    [meetingsMapping addRelationshipMappingWithSourceKeyPath:@"organizer" mapping:[self contactsMapping]];
    [meetingsMapping addRelationshipMappingWithSourceKeyPath:@"parent_meeting" mapping:[self meetingsMapping]];

    return meetingsMapping;
}

And whenever I add relationship mapping for parent_meeting

[meetingsMapping addRelationshipMappingWithSourceKeyPath:@"parent_meeting" mapping:[self meetingsMapping]];

It creates an infinite loop. Is there any other way of creating relationship to same entity.

Please help.

Upvotes: 2

Views: 338

Answers (1)

Wain
Wain

Reputation: 119031

Replace the line that causes the recursion:

[meetingsMapping addRelationshipMappingWithSourceKeyPath:@"parent_meeting" mapping:[self meetingsMapping]];

with a direct reference to the mapping itself:

[meetingsMapping addRelationshipMappingWithSourceKeyPath:@"parent_meeting" mapping:meetingsMapping];

Upvotes: 6

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