[S2GRAPH-135] Change the way LabelIndexOption is implemented and improve it

• Type: Improvement
• Status: Done
• Priority: Minor
• Resolution: Done
• Fix Version/s: 0.2.0
• Assignee: Daewon Jeong
• Reporter: Daewon Jeong
• Created: 30/Nov/16 12:58
• Updated: 28/Dec/16 01:27
• Resolved: 28/Dec/16 01:27

Description

https://lists.apache.org/thread.html/e9c9237c5468fd899f693352eb23cc514280df41d0d11ae8e51fac97@%3Cdev.s2graph.apache.org%3E

I hope the LabelIndexOption has changed as suggested in the above link.

LabelIndex option

When creating a label index, create a direction item in the optionos field.

• 'labelIndex' works for both directions.
• If there is no specific option, all of them expect to be true. (store indexEdge, store degree)
• If you want to apply a specific option for a specific direction, specify the direction in 'option'.

Definition

Ex)
in direction: drop indexEdge, drop degree
out direction: store indexEdge, store degree

LabelIndexOption

{
    "out": {
        "method": "drop",
        "storeDegree": false
    }
}

Issue Links

• links to: GitHub Pull Request #103