如何从复杂的JSON获取子文档 - ArangoDB

Question

我需要获取所有事件作为子文档（事件数组），其中包含_playerid = somevalue，可以使用AQL在ArangoDB中完成吗？

样品DOC：

{ 
    "livescore": { 
     "league": [ 
      { 
       "match": { 
        "home": { 
         "_goals": "2", 
         "_id": "2337787", 
         "_name": "Defensa y Justicia" 
        }, 
        "away": { 
         "_goals": "3", 
         "_id": "2337780", 
         "_name": "Colon Santa FE" 
        }, 
        "events": { 
         "event": [ 
          { 
           "_assist": "", 
           "_assistid": "", 
           "_extra_min": "", 
           "_id": "22295244", 
           "_minute": "22", 
           "_player": "J. Tejera", 
           "_playerid": "2405930", 
           "_result": "", 
           "_team": "home", 
           "_type": "yellowcard" 
          } 
         ] 
        }, 
        "ht": { 
         "_score": "[1-1]" 
        }, 
        "ft": { 
         "_score": "[2-3]" 
        }, 
        "_alternate_id": "4100536", 
        "_alternate_id_2": "4328174", 
        "_commentary": "True", 
        "_date": "12.05.2015", 
        "_id": "4218094", 
        "_static_id": "12051523377872337780", 
        "_status": "FT", 
        "_time": "00:10" 
       }, 
       "_country": "argentina", 
       "_name": "Argentina: Primera Division", 
       "_cup": "False", 
       "_id": "2914", 
       "_sub_id": "29144" 
      }, 
      { 
       "match": [ 
        { 
         "home": { 
          "_goals": "?", 
          "_id": "2337758", 
          "_name": "Berazategui" 
         }, 
         "away": { 
          "_goals": "?", 
          "_id": "2337826", 
          "_name": "General Lamadrid" 
         }, 
         "events": "", 
         "ht": { 
          "_score": "" 
         }, 
         "_alternate_id": "4106986", 
         "_alternate_id_2": "4328905", 
         "_commentary": "False", 
         "_date": "12.05.2015", 
         "_id": "4224541", 
         "_static_id": "12051523377582337826", 
         "_status": "18:00", 
         "_time": "18:00" 
        }, 
        { 
         "home": { 
          "_goals": "?", 
          "_id": "2337842", 
          "_name": "Justo José de Urquiza" 
         }, 
         "away": { 
          "_goals": "?", 
          "_id": "2337850", 
          "_name": "Laferrere" 
         }, 
         "events": "", 
         "ht": { 
          "_score": "" 
         }, 
         "_alternate_id": "4106988", 
         "_alternate_id_2": "4329005", 
         "_commentary": "False", 
         "_date": "12.05.2015", 
         "_id": "4224543", 
         "_static_id": "12051523378422337850", 
         "_status": "18:00", 
         "_time": "18:00" 
        } 
       ], 
       "_country": "argentina", 
       "_name": "Argentina: Primera C Metropolitana", 
       "_cup": "False", 
       "_id": "2912", 
       "_sub_id": "29120" 
      } 
     ], 
     "_updated": "12.05.2015 06:41:07", 
     "_sport": "soccer" 
    } 
} 

Answer 1

我想是的。我想这与你的测试数据：

FOR d in YourData 
    LET leagueList = d.livescore.league 
    FOR league IN leagueList 
     LET eventList = league.match.events 
     FILTER !IS_NULL(eventList) 
     LET eventList2 = eventList.event 
     FOR event IN eventList2 
      FILTER event._playerid == "2405930" 
      RETURN event 

当然，我不知道我是否正确地理解你的数据莫代尔/问题，但也许已经这个例子可以帮助你。