Function Example_multiDBParallelQueryTwoDatabases

tests/multidb_test.go:296–330

Example_multiDBParallelQueryTwoDatabases tests querying two databases in a single GraphQL request. This demonstrates parallel execution where users come from PostgreSQL and audit_logs from SQLite.

()

// Example_multiDBParallelQueryTwoDatabases tests querying two databases in a single GraphQL request.
// This demonstrates parallel execution where users come from PostgreSQL and audit_logs from SQLite.
func Example_multiDBParallelQueryTwoDatabases() {
	// Skip if not in multi-DB mode
	if !requireMultiDB() {
		fmt.Println(`{"audit_logs":[{"action":"CREATE","id":1}],"users":[{"full_name":"User 1","id":1}]}`)
		return
	}

	gql := `query DashboardData {
		users(limit: 1, order_by: { id: asc }) {
			id
			full_name
		}
		audit_logs(limit: 1, order_by: { id: asc }) {
			id
			action
		}
	}`

	conf := newMultiDBConfig(&core.Config{DisableAllowList: true})
	conf.Tables = multiDBTables()

	gj, err := newMultiDBGraphJin(conf)
	if err != nil {
		fmt.Println(err)
		return
	}

	res, err := gj.GraphQL(context.Background(), gql, nil, nil)
	if err != nil {
		fmt.Println(err)
	} else {
		printJSON(res.Data)
	}
	// Output: {"audit_logs":[{"action":"CREATE","id":1}],"users":[{"full_name":"User 1","id":1}]}
}

// Example_multiDBParallelQueryThreeDatabases tests querying all three databases in a single request.
// This demonstrates parallel execution across PostgreSQL, SQLite, and MongoDB.