Adding an Edge

Function

This API is used to add an edge.

URI

• URI format

  POST /ges/v1.0/{project_id}/graphs/{graph_name}/edges

• Parameter description

  Table 1 URI parameter description

  Parameter	Mandatory	Type	Description
  project_id	Yes	String	Project ID, which is used for resource isolation. For details, see Obtaining a Project ID.
  graph_name	Yes	String	Graph name

Request

• Request example

  POST http://{SERVER_URL}/ges/v1.0/{project_id}/graphs/{graph_name}/edges
  
  {
       "source":"Lily",
       "target": "Rocky",
       "label": "rate",
       "properties": {"Score":[5],"Datetime":["2018-01-01 20:30:05"]},
       "parallelEdge": { 
             "action":"override",
             "ignoreLabel":true
      }
  }

  

  SERVER_URL: Address for accessing a graph. For details about its value, see Constraints of Using Service Plane APIs.

• Request body parameter description

  Parameter	Mandatory	Type	Description
  source	Yes	String	Source vertex name
  target	Yes	String	Target vertex name
  label	No	String	Label of an edge. If no label exists, set it to __DEFAULT__.
  properties	No	Json	Value of each property
  parallelEdge	No	Object	Repetitive edge processing
  action	No	String	Processing mode of repetitive edges. The value can be allow, ignore, or override. The default value is allow. allow indicates that repetitive edges are allowed. ignore indicates that subsequent repetitive edges are ignored. override indicates that the previous repetitive edges are overwritten.
  ignoreLabel	No	Boolean	Whether to ignore labels on repetitive edges. The value is true or false, and the default value is true. true: Indicates that the repetitive edge definition does not contain the label. That is, the <source vertex, target vertex> indicates an edge, excluding the label information. false: Indicates that the repetitive edge definition contains the label. That is, the <source vertex, target vertex, label> indicates an edge.

Response

• Parameter description

  Parameter	Mandatory	Type	Description
  errorMessage	No	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	No	String	System prompt. If execution succeeds, this parameter may be left blank. If execution fails, this parameter is used to display the error code.
  result	No	String	If the execution is successful, the value of result is success.

• Response example (successful request)

  Http Status Code: 200
  {
   "result":"success",
   "data":{"index":"0"}
  }

• Response example (failed request)

  Http Status Code: 400
  {
   "errorMessage":"edge source vertex [Lily] does not exist",
   "errorCode":"GES.8000"
  }

Return Value

• Normal

  200

• Abnormal

  Table 2 Return code for failed requests

  Return Value	Description
  400 Bad Request	Request error.
  401 Unauthorized	Authentication failed.
  403 Forbidden	No operation permission.
  404 Not Found	The requested resource was not found.
  500 Internal Server Error	Internal service error.
  503 Service Unavailable	Service unavailable.