Description

This PR adds the ability to filter on scalar custom cypher fields. A contrived example:

Type definitions:

type Thing {
    name: String
    custom_count: Int
        @cypher(
            statement: """
            MATCH (m:${CustomType})
            RETURN count(m) as c
            """
            columnName: "c"
        )
}

You can now query with a filter based on the custom_count field:

query {
    things(where: { custom_count_GT: 0 }) {
        name
        custom_count
    }
}

Complexity

Medium

Issue

Relates to #554, but not fully closing as this does not include list/relationship fields.

Closes

Checklist

The following requirements should have been met (depending on the changes in the branch):

• Documentation has been updated
• TCK tests have been updated
• Integration tests have been updated
• Example applications have been updated
• New files have copyright header
• CLA (https://neo4j.com/developer/cla/) has been signed