將數據集導入ContextBroker

Question

我目前有兩個大型數據集（大約200GB），我想將其存儲到ContextBroker中，以便對其執行數據分析。到目前爲止，我已經能夠設置ContextBroker與MongoDB。我還安裝了Cygnus訂閱ONCHANGE爲了堅持數據從ContextBroker。是否可以使用CKAN將我的外部數據集存儲到FIWARE平臺中，還是必須使用其他內容？

EDIT1：這些數據集是一組包含一系列事件的對象，是timestamped，geo-locatedjson文件。

EDIT2：由於請求的數據的一個小樣本我指的是：

{"track":[ 
{"time":"2015-11-16T00:45:29.016","midpoint":{"x":70.66,"y":188.90},"realworld":{"x":-7.49,"y":22.96},"RDCoordinate":{"x":161582.09,"y":383031.34},"UTM-WGS84":{"Latitude":51.4363489,"Longitude":5.4818640}}, 
{"time":"2015-11-16T00:45:29.022","midpoint":{"x":66.85,"y":189.61},"realworld":{"x":-7.53,"y":22.92},"RDCoordinate":{"x":161582.16,"y":383031.34},"UTM-WGS84":{"Latitude":51.4363489,"Longitude":5.4818649}}, 
{"time":"2015-11-16T00:45:29.029","midpoint":{"x":61.66,"y":189.92},"realworld":{"x":-7.60,"y":22.90},"RDCoordinate":{"x":161582.22,"y":383031.31},"UTM-WGS84":{"Latitude":51.4363486,"Longitude":5.4818658}}, 
{"time":"2015-11-16T00:45:29.082","midpoint":{"x":56.16,"y":190.47},"realworld":{"x":-7.66,"y":22.87},"RDCoordinate":{"x":161582.28,"y":383031.28},"UTM-WGS84":{"Latitude":51.4363483,"Longitude":5.4818667}}, 
{"time":"2015-11-16T00:45:29.090","midpoint":{"x":50.74,"y":191.64},"realworld":{"x":-7.71,"y":22.80},"RDCoordinate":{"x":161582.38,"y":383031.28},"UTM-WGS84":{"Latitude":51.4363483,"Longitude":5.4818681}}, 
{"time":"2015-11-16T00:45:29.112","midpoint":{"x":45.58,"y":192.07},"realworld":{"x":-7.78,"y":22.78},"RDCoordinate":{"x":161582.44,"y":383031.25},"UTM-WGS84":{"Latitude":51.4363480,"Longitude":5.4818690}}, 
{"time":"2015-11-16T00:45:29.151","midpoint":{"x":41.80,"y":193.42},"realworld":{"x":-7.80,"y":22.69},"RDCoordinate":{"x":161582.52,"y":383031.31},"UTM-WGS84":{"Latitude":51.4363486,"Longitude":5.4818701}}, 
{"time":"2015-11-16T00:45:29.197","midpoint":{"x":36.27,"y":194.43},"realworld":{"x":-7.86,"y":22.63},"RDCoordinate":{"x":161582.59,"y":383031.31},"UTM-WGS84":{"Latitude":51.4363486,"Longitude":5.4818712}} 
]} 

Answer 1

甲posibility可能是每個項目建模爲在獵戶Conext下列方式的Event類型的實體經紀人：

{ 
    "id": "Item1", 
    "type": "Event", 
    "time": { 
     "value": "2015-11-16T00:45:29.016", 
     "type": "DateTime" 
    }, 
    "midpoint": { 
     "value": { 
      "x": 70.66, 
      "y": 188.90 
     }, 
     "type": "Object" 
    }, 
    "realworld": { 
     "value": { 
      "x": -7.49, 
      "y": 22.96 
     }, 
     "type": "Object" 
    }, 
    "RDCoordinate": { 
     "value": { 
      "x": 161582.09, 
      "y": 383031.34 
     }, 
     "type": "Object" 
    }, 
    "UTM-WGS84": { 
     "value": "51.4363489, 5.4818640", 
     "type": "geo:point" 
    } 
} 

（以上可作爲有效載荷爲POST /v2/entities操作來創建實體）。

在這個模型中，time，midpoint，realworld，RDCoordinate和UTM-WG84是實體屬性。請注意，特殊的屬性類型time和UTM-WG84：

• time使用DateTime，這是NGSIv2標準的方式來指定日期（見NSGIv2 specification document「特殊屬性類型」）。我建議加入時區，以獲得更高的精度（例如2015-11-16T00:45:29.016Z）。

• UTM-WG84使用geo:point，這是NGSIv2標準方式來指定實體的點位置（請參閱NSGIv2 specification document中的「實體的地理空間屬性」）。