[jira] [Created] (S2GRAPH-199) Changing query more intuitively by using `columnName` instead of `from/to` in label field name

["Daewon Jeong (JIRA)" <ji...@apache.org>]

Daewon Jeong created S2GRAPH-199:
------------------------------------

             Summary: Changing query more intuitively by using `columnName` instead of `from/to` in label field name
                 Key: S2GRAPH-199
                 URL: https://issues.apache.org/jira/browse/S2GRAPH-199
             Project: S2Graph
          Issue Type: Improvement
          Components: s2graphql
            Reporter: Daewon Jeong
            Assignee: Daewon Jeong


h1. Changing query more intuitively by using `columnName` instead of `from/to` in label field name

When fetching a Label Associated with a ServiceColumn, `from/to` Is used as the Label field. 
 This indirectly represents the `source/target Column` in the Label.

You can also query the next step based on the corresponding `from/to`.

ColumnName defined in the Label schema to create a more intuitive query than using `from/to`.

For example, suppose you have the following Services, ServiceColumns, and Label.
{noformat}
service = Service(name: kakao)
userColumn = ServiceColumn(serviceName: kakao, name: user)
movieColumn = ServiceColumn(serviceName: kakao, name: movie)
Label(name: like, sourceServiceColumn: userColumn, targetServiceColumn: movieColumn)
{noformat}
h2. Let's take an example of a query that comes from a user who likes movies that user 'daewon' likes.

As is
{noformat}
query {
  kakao {
    user(id: "daewon") {
      like(direction: out) { # By Label(like) shcmea, direction is fixed in `out`
        score
        to { # `to` Represents the targetServiceColumn (movie) of `like` label.
          id
          like(direction: in) { # By Label(like) shcmea, direction is fixed in `in`
            score
            from { # In the case of the in direction, it is confused because the directions `from` and `to` are relatively determined.
              id
              age
            }
          }
        }
      }
    }
  }
}

{noformat}
To be
{noformat}
query {
  kakao {  
    user(id: "daewon") {      
      like { # For a Label(like) started with serviceColumn(user), the direction is fixed to `out`.
        score            
        movie { 
          id         
          like { # For a Label(like) started with serviceColumn(movie), the direction is fixed to `in`.
            score              
            user { 
              id
              age
            }      
          }  
        }
      }
    }
  }
}
{noformat}
As you can see in the example above, we can know in advance how to query `like` label according to the starting column(user/movie), and also use field name instead of `from/to` to use columnName.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)