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https://issues.apache.org/jira/browse/S2GRAPH-222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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DOYUNG YOON reassigned S2GRAPH-222:
-----------------------------------
Assignee: DOYUNG YOON
> Support Not logical operator in WhereParser.
> ---------------------------------------------
>
> Key: S2GRAPH-222
> URL: https://issues.apache.org/jira/browse/S2GRAPH-222
> Project: S2Graph
> Issue Type: New Feature
> Components: s2core
> Reporter: DOYUNG YOON
> Assignee: DOYUNG YOON
> Priority: Minor
>
> `And/Or` operator is implemented as a logical operator, but `Not` is not
> implemented in WhereParser.
> This is illustrated by following examples.
> Following query works only because we added hardcoded implementation on `not
> in` as predicates.
> {noformat}
> query {
> s2graph {
> User(id: 1) {
> id
> Friends(limit: 10, filter: "friend_name not in
> ('steamshon')")
> }
> }
> }
> {noformat}
> I believe implementing `Not` as a logical operator is more general, so below
> is my suggestion.
> {noformat}
> query {
> s2graph {
> User(id: 1) {
> id
> Friends(limit: 10, filter: "NOT (friend_name in
> ('steamshon'))")
> }
> }
> }
> {noformat}
> In this way, we don't need to implement not case for all predicates, such as
> `in`, `between`, `contains`, `eq`.
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