cw_json_enumerate_array.sqlx

config { hasOutput: true }
/*
 * Copyright 2022 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

CREATE OR REPLACE FUNCTION ${self()}(text string)
RETURNS array<struct<ordinal int64, jsonvalue string>>
LANGUAGE js AS """

    if ( text === null  )
      return [];
    var idx = 0;
    var nxt = function() {
        idx ++;
        return idx;
    };
    return  JSON.parse(text).map( x => ({ ordinal: nxt(), jsonvalue: JSON.stringify(x)}));
""";