Question

我拼命想要获得具有纬度和经度的Userevents。我正在使用此查询，但它返回一个空的结果集，我不知道为什么。

NSString *eventInfo = @"SELECT name, eid, venue.id, location, start_time, end_time from event WHERE eid IN (SELECT eid FROM event_member WHERE uid = me() AND rsvp_status='attending' OR rsvp_status='maybe'))";

NSString *placeInfo = @"SELECT page_id, name, latitude, longitude FROM place WHERE page_id IN (SELECT venue.id FROM #event)";

NSDictionary *multiQuery = [[NSDictionary alloc] initWithObjectsAndKeys: eventInfo, @"event", placeInfo, @"place", nil];

NSDictionary *queryParams = [NSDictionary dictionaryWithObjectsAndKeys: multiQuery, @"q", accessToken, @"access_token", nil];

Answer 1

首先，您不需要第二个查询：您在第一个查询中可以收到的有关场地的所有信息，venue是一个带有名称和坐标的复杂对象。

所以，当你运行查询时

SELECT name, eid, venue, location, start_time, end_time from event WHERE eid IN (SELECT eid FROM event_member WHERE uid = me() and  rsvp_status='attending' OR rsvp_status='maybe')

您应该在venue数组中获取所有场地信息。

Answer 2

如果您只想查询，请执行以下操作：

{
    "events" : "SELECT privacy, name, description, start_time, venue.id, pic_cover FROM event WHERE eid IN (SELECT eid FROM event_member WHERE uid = me())",
    "venues" : "SELECT latitude, longitude, name, page_id FROM place WHERE page_id IN (SELECT  venue.id FROM #events)"
}

请注意，您需要使用objective-c手动进行连接。所有facebook都可以为我们提供事件列表，以及与事件相关的场地列表。

Answer 3

尝试此查询，它将返回关于即将到来的事件的所有事情

byte[] dataArray = new byte[] {-60, -65, -82, 44, 36, 69, -96, 64};
DataInputStream stream = new DataInputStream(new ByteArrayInputStream(dataArray));

double val = stream.readDouble();
out.println(val); // -1.4960627518157586E23

Facebook FQL：获取具有纬度和经度的iOS版本的Userevents

3 个答案: