Added selectQueryOrMutationField option

Signed-off-by: Tamas Geschitz <[email protected]>

Author: gtamas

packages/openapi-to-graphql/README.md

@@ -156,6 +156,8 @@ Schema options:
 
 - `idFormats` (type: `string[]`): If a schema is of type string and has format UUID, it will be translated into a [GraphQL ID type](https://graphql.org/graphql-js/type/#graphqlid). To allow for more customzation, this option allows users to specify other formats that should be interpreted as ID types. 
 
+- `selectQueryOrMutationField` (type: `object`, default: `{}`): OpenAPI-to-GraphQL, by default, will make all GET operations into `Query` fields and all other operations into `Mutation` fields. This option allows users to manually override this process. The operation is identifed first by the [title](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#infoObject) of the OAS, then the [path](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#paths-object) of the operation, and lastly the [method](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#path-item-object) of the operation. The `selectQueryOrMutationField` object is thus a triply nested object where the outer key is the title, followed by the path, and finally the method, which points to an integer value of either `0`, or `1`, corresponding to `Query` or `Mutation` type respectively. 
+
 ***
 
 Resolver options:

packages/openapi-to-graphql/lib/index.d.ts

@@ -37,3 +37,4 @@ declare type Result = {
  */
 export declare function createGraphQlSchema(spec: Oas3 | Oas2 | (Oas3 | Oas2)[], options?: Options): Promise<Result>;
 export { sanitize } from './oas_3_tools';
+export { GraphQLOperationType } from './types/graphql';

packages/openapi-to-graphql/lib/index.js

@@ -2,6 +2,10 @@
  * Custom type definitions for GraphQL.
  */
 import { GraphQLObjectType, GraphQLScalarType, GraphQLInputObjectType, GraphQLList, GraphQLEnumType } from 'graphql';
+export declare enum GraphQLOperationType {
+    Query = 0,
+    Mutation = 1
+}
 export declare type GraphQLType = GraphQLScalarType | GraphQLObjectType | GraphQLEnumType | GraphQLInputObjectType | GraphQLList<any>;
 declare type Arg = {
     type: any;