CustomSyncUpTarget.h

#ifndef CustomSyncUpTarget_h
#define CustomSyncUpTarget_h
#import "SFSyncUpTarget.h"

@interface CustomSyncUpTarget : SFSyncUpTarget

@end

#endif /* CustomSyncUpTarget_h */

CustomSyncUpTarget.m

#import <Foundation/Foundation.h>
#import "SFSyncUpTarget.h"
#import "CustomSyncUpTarget.h"
#import "SFSmartSyncConstants.h"
#import "SFSmartSyncObjectUtils.h"
#import "SFSmartSyncSoqlBuilder.h"
#import "SFSmartSyncNetworkUtils.h"
#import "SFSmartSyncSyncManager.h"
#import <SalesforceRestAPI/SFRestAPI+Blocks.h>
#import <SalesforceRestAPI/SFRestRequest.h>
#import <SalesforceSDKCore/SFJsonUtils.h>
#import <SmartStore/SFSmartStore.h>
#import "SFLogger.h"

NSString * const kOpportunityLineItem = @"OpportunityLineItem";
NSString * const kOpportunityMDField = @"OpportunityId";

@implementation CustomSyncUpTarget : SFSyncUpTarget

- (instancetype)initWithDict:(NSDictionary *)dict {
    self = [super initWithDict:dict];
    if (self) {
        self.targetType = SFSyncUpTargetTypeCustom;
    }
    return self;
}

- (instancetype)init {
    self = [super init];
    if (self) {
        self.targetType = SFSyncUpTargetTypeCustom;
    }
    return self;
}

- (void)updateOnServer:(NSString*)objectType
              objectId:(NSString*)objectId
                fields:(NSDictionary*)fields
       completionBlock:(SFSyncUpTargetCompleteBlock)completionBlock
             failBlock:(SFSyncUpTargetErrorBlock)failBlock
{
    NSMutableDictionary *fields2 = [fields mutableCopy];
    if([objectType isEqualToString:kOpportunityLineItem]) {
        [fields2 removeObjectForKey:OpportunityMDField]; //master/detail field, no updatin!
    }
    [super updateOnServer:objectType objectId:objectId fields:fields2
          completionBlock:completionBlock failBlock:failBlock];
}

- (NSMutableDictionary *)asDict {
    NSMutableDictionary *dict = [super asDict];
    dict[kSFSyncTargetiOSImplKey] = @"CustomSyncUpTarget";
    dict[kSFSyncTargetTypeKey] = [[self class] targetTypeToString:self.targetType];
    return dict;
}

@end