sql-client/lib/util.js

A dirt-simple SQL client abstraction (currently) supporting PostgreSQL, MySQL and SQLite.

// Generated by CoffeeScript 2.6.0
(function() {
  var Util;

  Util = class Util {
    constructor() {
      this.merge = this.merge.bind(this);
      //----------------------------------------------------------------------------#
      this.handle_error = this.handle_error.bind(this);
      //----------------------------------------------------------------------------#
      this.for_async = this.for_async.bind(this);
      this.for_each_async = this.for_each_async.bind(this);
    }

    merge(...objs) {
      var j, len, obj, result;
      result = {};
      for (j = 0, len = objs.length; j < len; j++) {
        obj = objs[j];
        result = Object.assign(result, obj);
      }
      return result;
    }

    handle_error(err, callback, throw_when_no_callback = true) {
      if (throw_when_no_callback == null) {
        throw_when_no_callback = true;
      }
      if (err != null) {
        if (callback != null) {
          callback(err);
          return true;
        } else if (throw_when_no_callback) {
          throw err;
        } else {
          return console.error("ERROR", err);
        }
      } else {
        return false;
      }
    }

    for_async(initialize, condition, action, increment, options, whendone) {
      var looper, results, timeout;
      if (typeof options === "function" && (whendone == null)) {
        whendone = options;
        options = void 0;
      }
      timeout = options != null ? options.timeout : void 0;
      results = [];
      looper = function() {
        if (condition()) {
          return action(function(...response) {
            results.push(response);
            increment();
            return looper();
          });
        } else {
          if (whendone != null) {
            return whendone(void 0, results);
          }
        }
      };
      initialize();
      return looper();
    }

    for_each_async(list, action, options, whendone) {
      var act, cond, i, incr, init;
      if (typeof options === "function" && (whendone == null)) {
        whendone = options;
        options = void 0;
      }
      i = null;
      init = function() {
        return i = 0;
      };
      cond = function() {
        return i < list.length;
      };
      incr = function() {
        return i += 1;
      };
      act = function(next) {
        return action(list[i], i, list, next);
      };
      return this.for_async(init, cond, act, incr, whendone);
    }

  };

  //----------------------------------------------------------------------------#
  module.exports.Util = new Util();

}).call(this);