DB caching

gistfile1.txt

var SQLite = require('react-native-sqlite');

var rethrowOr = require('../utils/rethrowOr');

var _dbToTables = {};

var DBInfo = {
  getTables: function(database, callback) {
    var dbName = database.getName();
    if (_dbToTables[dbName]) {
      callback(dbName);
      return;
    }

    var tables = [];
    database.executeSQL(
      `SELECT name FROM sqlite_master where type='table'`,
      [], 
      (row) => tables.push(row.name),
      rethrowOr(() => {
        _dbToTables[dbName] = tables;
        callback(tables);
      }),
    );
  },

};

module.exports = DBInfo;