PHP Mongo Aggregate中的多个$匹配

时间:2016-01-30 16:07:04

标签: php mongodb

我在Mongo Aggregate查询中使用$ match两次出现问题。当查询输入到数组中时,它似乎会覆盖第一个$ match与第二个$ match匹配,因此无法正确查询。有没有办法用两个匹配查询?

$aggArray = array(array(
'$match'=>array('payload.location.coordinates.0'=>array('$gte'=>$longmin,'$lte'=>$longmax),'payload.location.coordinates.1'=>array('$gte'=>$latmin,'$lte'=>$latmax),'time'=>array('$gte'=>new MongoDate($time1),'$lte'=>new MongoDate($time2))),
'$project'=>array('payload.location.coordinates'=>1,'time'=>array('$hour'=>'$time')),
'$match'=>array('time'=>array('$gte'=>10,'$lte'=>12))
));

我目前在Mongo的查询是:

db.getCollection('datas').aggregate(
{"$match":{"payload.location.coordinates.0":{"$gte":-0.489,"$lte":0.236},"payload.location.coordinates.1":{"$gte":51.28,"$lte":51.686},"time":{"$gte":new Date(2016,0,10),"$lte":new Date(2016,0,12)}}},
{"$project":{"payload.location.coordinates":1,"time":{"$hour":"$time"}}},
{"$match":{"time":{"$gte":10,"$lte":12}}})

这会在一段时间内(在这种情况下,1月10日到1月12日)在某个地理边界框({​​{1}})内获取一组数据,查询。然后它会在每个记录的小时内进行预测,然后查询这些日期(payload.location.coordinates)内给定小时范围内的记录。输出是原始数据系列的一组结果,在两个日期之间的上午10点到12点之间返回time:{"$gte":10,"$lte":12}(小时)和time

1 个答案:

答案 0 :(得分:2)

首先创建一个 $project 步骤,用于投影其他字段以及显示日期时间字段time的小时部分的新字段。然后,下一阶段应将两个过滤器(即坐标,日期和小时范围)合并为一个 $match 管道步骤。

Mongo查询

var start = new Date(time1);
var end = new Date(time2);

var aggArray = [
    {
        "$project": {
            "coordinates": "$payload.location.coordinates",
            "datetime": "$time",
            "hour_part": { "$hour": "$time" }
        },
    },
    {
        "$match": {
            "coordinates.0": { "$gte": longmin, "$lte": longmax},
            "coordinates.1": { "$gte": latmin, "$lte": latmax},
            "datetime": { "$gte": start, "$lte": end },
            "hour_part": { "$gte": 10, "$lte": 12 }
        }       
    }
];

PHP等效

$start = new MongoDate($time1);
$end = new MongoDate($time2);

$aggArray = array(
    array(
        "$project" => array(
            "coordinates" => "payload.location.coordinates",
            "datetime" => "$time",
            "hour_part": array( "$hour" => "$time" )            
        ),
    ),
    array(
        "$match" => array(
            "coordinates.0" => array(
                "$gte" => $longmin,
                "$lte" => $longmax
            ),
            "coordinates.1" => array(
                "$gte" => $latmin,
                "$lte" => $latmax
            ),
            "datetime" => array(
                "$gte" => $start,
                "$lte" => $end
            ),
            "hour_part" => array(
                "$gte" => 10,
                "$lte" => 12
            )
        )
    )
);