編譯 gremlin 遍歷查詢的響應

Question

我有以下圖形結構：

頂點——戰役、項目、領導

{"Name":["CompanyV"],"sid":["SidFromSQL"]}
{"name":["Campaign3V"],"status":["paused"]}
{"name":["Campaign1"],"startDate":["Jan 1, 2019 5:30:00 AM"]}
{"name":["Campaign2V"],"status":["active"]}
{"name":["Lead11V"]}
{"name":["Lead2V"]}
{"name":["Project1V"],"Name":[""],"sid":["SidFromSQL"]}
{"name":["Project2V"],"Name":[""],"sid":["SidFromSQL"]}
{"name":["Lead3V"]}
{"name":["Campaign1V"],"status":["active"]}

邊緣：

{"inVertex":{"id":"58b6e79f-6809-6fc4-9f0a-c8a26337a729","label":"Campaign"},"outVertex":{"id":"1cb6e79d-1ca7-4d3c-e71d-c05c13abac15","label":"Project"},"id":"a6b6e79f-6809-87bf-a535-eec9101e683c","label":"hasCampaign"}
{"inVertex":{"id":"c4b6e7ae-64d3-b8b9-ce7b-c319e7ed70ca","label":"Lead"},"outVertex":{"id":"1cb6e79d-1ca7-4d3c-e71d-c05c13abac15","label":"Project"},"id":"6cb6e7ae-64d4-6fb0-9314-411eb72d9a28","label":"hasLead"}
{"inVertex":{"id":"a2b6e79d-1ca7-db4e-f19f-2ef1df514ade","label":"Project"},"outVertex":{"id":"64b6e79c-d58b-37ad-6c3e-63a783e6df97","label":"Company"},"id":"4eb6e7a8-451f-4365-1d79-d5d118b5ff56","label":"hasProject"}
{"inVertex":{"id":"c4b6e7ae-64d3-b8b9-ce7b-c319e7ed70ca","label":"Lead"},"outVertex":{"id":"58b6e79f-6809-6fc4-9f0a-c8a26337a729","label":"Campaign"},"id":"96b6e7ae-64d4-b918-353d-fccc13cbd9bb","label":"hasLead"}
{"inVertex":{"id":"94b6e79f-69b9-ccfe-d9e6-a41c4be59979","label":"Campaign"},"outVertex":{"id":"a2b6e79d-1ca7-db4e-f19f-2ef1df514ade","label":"Project"},"id":"34b6e79f-69b9-bd15-9331-0551c464f222","label":"hasCampaign"}
{"inVertex":{"id":"36b6e7b2-3d78-3229-9ebd-05c2c5f5927b","label":"Lead"},"outVertex":{"id":"1cb6e79d-1ca7-4d3c-e71d-c05c13abac15","label":"Project"},"id":"c2b6e7b2-3d78-16d0-ee95-46b66108236e","label":"hasLead"}
{"inVertex":{"id":"36b6e7b2-3d78-3229-9ebd-05c2c5f5927b","label":"Lead"},"outVertex":{"id":"58b6e79f-6809-6fc4-9f0a-c8a26337a729","label":"Campaign"},"id":"04b6e7b2-3d79-3d95-855e-a206d38b8603","label":"hasLead"}
{"inVertex":{"id":"1cb6e79d-1ca7-4d3c-e71d-c05c13abac15","label":"Project"},"outVertex":{"id":"64b6e79c-d58b-37ad-6c3e-63a783e6df97","label":"Company"},"id":"ccb6e7a8-449b-d92c-1330-4f6288ab0852","label":"hasProject"}
{"inVertex":{"id":"7eb6e7dc-94f9-ca83-df4c-87284897151f","label":"Lead"},"outVertex":{"id":"1cb6e79d-1ca7-4d3c-e71d-c05c13abac15","label":"Project"},"id":"d2b6e7dc-94fb-8219-30a2-d304ccaed75d","label":"hasLead"}
{"inVertex":{"id":"d0b6e79f-692a-8c03-112e-9388e54b1f9d","label":"Campaign"},"outVertex":{"id":"1cb6e79d-1ca7-4d3c-e71d-c05c13abac15","label":"Project"},"id":"3cb6e79f-692b-4cad-48ac-1e4991e75b60","label":"hasCampaign"}

我正在運行以下查詢以獲取與項目和特定活動關聯的潛在客戶。

        GraphTraversal t =g.V("1cb6e79d-1ca7-4d3c-e71d-c05c13abac15").out("hasLead")
                .where(in("hasLead").has("Campaign","name","Campaign1V"));

這是返回有關 output 中的潛在客戶的信息，我想知道是否有一種方法可以在 output 響應（使用單個遍歷語句）中獲取特定的活動信息以及 ID 信息，以便此UI 組件可以利用它在 HTML 中呈現。

Answer 1

您只需要將結果轉換為您想要的形式。 在這種情況下，您可以使用類似project()

g.V("1cb6e79d-1ca7-4d3c-e71d-c05c13abac15").out("hasLead").
  where(__.in("hasLead").has("Campaign","name","Campaign1V")).
  project('lead','campaign').
    by().
    by(__.in("hasLead").has("Campaign","name","Campaign1V").fold())

您可能希望在第一個by()調制器中包含一些內容，以進一步將頂點轉換為您想要的屬性，並且您可能也希望對第二個調制器執行相同的操作。 此外，僅當您的每個潛在客戶有多個廣告系列時，才需要fold() 。

所以，上面的工作很好，很容易理解，但它確實遍歷了相同的“hasLead”邊緣兩次。 您可以避免這種情況，但它會增加一些對可讀性的誤導，您必須決定是否可以忍受：

g.V("1cb6e79d-1ca7-4d3c-e71d-c05c13abac15").out("hasLead").
  project('lead','campaign').
    by().
    by(__.in("hasLead").has("Campaign","name","Campaign1V").fold()).
  filter(select('campaign').unfold())

現在，您投射所有“潛在客戶”，但過濾掉所有“活動”列表為空的。