sql-client/lib/sql-client.js

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

// Generated by CoffeeScript 2.6.0
(function() {
  var DEBUG, DEBUG_CONNECT, DEBUG_DDL, SQLClient, ref, ref1, ref2,
    splice = [].splice;

  DEBUG = /(^|,)SQLClient($|,)/i.test(typeof process !== "undefined" && process !== null ? (ref = process.env) != null ? ref.NODE_DEBUG : void 0 : void 0);

  DEBUG_DDL = /(^|,)SQLClient\.DDL($|,)/i.test(typeof process !== "undefined" && process !== null ? (ref1 = process.env) != null ? ref1.NODE_DEBUG : void 0 : void 0);

  DEBUG_CONNECT = /(^|,)SQLClient\.connect($|,)/i.test(typeof process !== "undefined" && process !== null ? (ref2 = process.env) != null ? ref2.NODE_DEBUG : void 0 : void 0);

  SQLClient = class SQLClient {
    constructor(...options1) {
      var factory, ref3;
      ref3 = options1, [...options1] = ref3, [factory] = splice.call(options1, -1);
      this.connect = this.connect.bind(this);
      this.disconnect = this.disconnect.bind(this);
      this.execute = this.execute.bind(this);
      this.options = options1;
      this.factory = factory;
      this.created_at = Date.now();
      this.pooled_at = null;
      this.borrowed_at = null;
      this.connected_at = null;
    }

    connect(options, callback) {
      if (typeof options === "function" && (callback == null)) {
        [callback, options] = [options, callback];
      }
      
      if (DEBUG_CONNECT) {
        console.log(`SQLClient.connect. @connection? ${this.connection != null}`);
      }
      if (this.connection == null) {
        return this.factory.open_connection(...this.options, (err, connection) => {
          if (err != null) {
            return typeof callback === "function" ? callback(err) : void 0;
          } else {
            this.connection = connection;
            this.connected_at = Date.now();
            return typeof callback === "function" ? callback() : void 0;
          }
        });
      } else {
        return typeof callback === "function" ? callback() : void 0;
      }
    }

    disconnect(options, callback) {
      if (typeof options === "function" && (callback == null)) {
        [callback, options] = [options, callback];
      }
      
      if (DEBUG_CONNECT) {
        console.log(`SQLClient.disconnect. @connection? ${this.connection != null}; options:`, options);
      }
      if (this.connection != null) {
        return this.factory.close_connection(this.connection, (err) => {
          if (err != null) {
            return typeof callback === "function" ? callback(err, this.connection) : void 0;
          } else {
            this.connection = null;
            this.connected_at = null;
            return typeof callback === "function" ? callback() : void 0;
          }
        });
      } else {
        return typeof callback === "function" ? callback() : void 0;
      }
    }

    execute(sql, bindvars, callback) {
      if ((callback == null) && typeof bindvars === 'function') {
        callback = bindvars;
        bindvars = null;
      }
      if (this.connection == null) {
        return this.connect((err) => {
          if (err != null) {
            return callback(err);
          } else {
            return this.execute(sql, bindvars, callback);
          }
        });
      } else {
        return this.factory.pre_process_sql(sql, bindvars, (err, sql, bindvars) => {
          if (err != null) {
            return typeof callback === "function" ? callback(err) : void 0;
          } else {
            if (DEBUG && (DEBUG_DDL || !(/^\s((create)|(drop))\s/i.test(sql)))) {
              console.log("SQLClient executing:", sql, bindvars);
            }
            return this.factory.execute(this.connection, sql, bindvars, callback);
          }
        });
      }
    }

  };

  exports.SQLClient = SQLClient;

}).call(this);