NAME

       GraphQL::Plugin::Convert - GraphQL plugin API abstract class

SYNOPSIS

         package GraphQL::Plugin::Convert::DBIC;
         use Moo;
         extends qw(GraphQL::Plugin::Convert);
         # ...

         package main;
         use Mojolicious::Lite;
         use Schema;
         use GraphQL::Plugin::Convert::DBIC;
         helper db => sub { Schema->connect('dbi:SQLite:test.db') };
         my $converted = GraphQL::Plugin::Convert::DBIC->to_graphql(sub { app->db });
         plugin GraphQL => {
           map { $_ => $converted->{$_} }
             qw(schema resolver root_value subscribe_resolver)
         };

         # OR, for knowledgeable consumers of GraphQL::Plugin::Convert APIs:
         package main;
         use Mojolicious::Lite;
         use Schema;
         helper db => sub { Schema->connect('dbi:SQLite:test.db') };
         plugin GraphQL => { convert => [ 'DBIC', sub { app->db } ] };

DESCRIPTION

       Abstract class for other GraphQL type classes to inherit from and implement.

METHODS

   to_graphql(@values)
       When called with suitable values (as defined by the implementing class), will return a
       hash-ref with these keys:

       schema
           A GraphQL::Schema.

       resolver
           A code-ref suitable for using as a resolver by "execute" in GraphQL::Execution.
           Optional.

       root_value
           A hash-ref suitable for using as a $root_value by "execute" in GraphQL::Execution.
           Optional.

       subscribe_resolver
           A code-ref suitable for using as a $subscribe_resolver by "subscribe" in
           GraphQL::Subscription. Optional.

   from_graphql
       When called with a hash-ref shaped as above, with at least a "schema" key with a
       GraphQL::Schema, returns some value(s). Optional to implement.  If the plugin does
       implement this, allows conversion from a GraphQL schema to that plugin's domain.