Question

正在缓存基本的Parse.com查询，但是我无法缓存此特定查询，我按照建议运行了很多次，缓存结果总是为零。请告知解决方案。

PFQuery *lotsOfWins = [PFQuery queryWithClassName:@"Class1"];
[lotsOfWins whereKey:@"Score" equalTo:@"0:]; //AND
[lotsOfWins whereKey:@"Status" notEqualTo:@"4"];

PFQuery *fewWins = [PFQuery queryWithClassName:@"Class2"];
[fewWins whereKey:@"NAME" equalTo:@"KHAN"]; AND
[fewWins whereKey:@"meetingStatus" notEqualTo:@"4"];


PFQuery *query = [PFQuery orQueryWithSubqueries:[NSArray arrayWithObjects:fewWins,lotsOfWins,nil]];
[query orderByDescending:@"updatedAt"];
query.limit = [NSNumber numberWithInt:10];
query.cachePolicy = kPFCachePolicyCacheThenNetwork; // CACHE POLICY
[query findObjectsInBackgroundWithBlock:^(NSArray *results, NSError *error) {

    NSLog(@"Successfully retrieved %d results.", results.count);
    if(error) {
        NSLog(@"It's an error!");
    }
}];

Answer 1

删除查询限制解决了问题。显然子查询不支持限制。

query.limit = [NSNumber numberWithInt：10]; //除去

Answer 2

Limit，是NSInteger属性，不是NSNumber。尝试query.limit = 10并且工作得很好。

Parse.com缓存复合查询

2 个答案: