Querying a Subgraph

Function

This API is used to query the subgraphs formed by the entered vertices and edges between the vertices.

URI

POST /ges/v1.0/{project_id}/graphs/{graph_name}/subgraphs/action?action_id=query

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain the project ID, see Obtaining a Project ID.
graph_name	Yes	String	Graph name

Request Parameters

**Table 2** Request body parameter
Parameter	Mandatory	Type	Description
vertices	Yes	String	Vertex ID array of the subgraph NOTE: The maximum number of vertices that can be entered is 100,000. If the number of vertices exceeds this limit, an error is reported.

Response Parameters

**Table 3** Response body parameters
Parameter	Type	Description
errorMessage	String	System prompt. If execution succeeds, this parameter may be left blank. If execution fails, this parameter is used to display the error message.
errorCode	String	System prompt code. If execution succeeds, this parameter may be left blank. If execution fails, this parameter is used to display the error code.
data	Object	The data field is contained when the query is successful, and the data field contains the subgraph query result. NOTE: The maximum number of subgraph edges that can be returned is 100,000. If the number of edges exceeds this limit, an error is reported.

Example Request

Query the subgraphs formed by the entered vertices and edges between the vertices. The subgraph vertex IDs are Ray, Ella, and Lethal Weapon.

{
    "vertices":[
               "Ray",
               "Ella",
               "Lethal Weapon"        
               ]
}

Example Response

Status code: 200

Example response (successful request)

Http Status Code: 200
{
    "data":{
        "vertices":[
            {
                "id":"Ray",
                "label":"user",
                "properties":{
                    "Name": ["Ray"],
                    "Gender":["M"],
                    "Age":["18-24"],
                    "Occupation":["college/grad student"],
                    "Zip-code":["90241"]
                }
            },
            {
                "id":"Ella",
                "label":"user",
                "properties":{
                    "Occupation":["other or not specified"],
                    "Name": ["Era"],
                    "Zip-code":["94402"],
                    "Gender":["F"],
                    "Age":["25-34"]
                }
            }
        ],
        "edges":[
            {
                "source":"Ray",
                "target":"Lethal Weapon",
                "index":"1",
                "label":"rate",
                "properties":{
                    "Score":[2],
                    "Datetime":["2000-11-22 19:16:16"]
                }
            },
            {
                "index":"0",
                "source":"Ella",
                "label":"rate",
                "properties":{
                    "Score":[5],
                    "Datetime":["2000-11-23 02:30:29"]
                },
                "target":"Lethal Weapon"
            },
            {
                "index":"5",
                "source":"Ella",
                "label":"friends",
                "properties":{},
                "target":"Ray"
            }
        ]
    }
}

Status code: 400

Example response for a failed request

Http Status Code: 400
{
  "errorMessage": " Bad Request, parameter vertices cannot be null",
  "errorCode": "GES.8214"
}

Status Codes

Return Value	Description
400 Bad Request	Request error.
401 Unauthorized	Authorization failed.
403 Forbidden	No operation permissions.
404 Not Found	No resources found.
500 Internal Server Error	Internal server error.
503 Service Unavailable	Service unavailable.