How to use the alloy/underscore._.each function in alloy

logger(DEBUG, "\n******************************\nCollection total BEFORE read from db: " + model.length + " models\n******************************");
		}
		var sql = opts.query || 'SELECT * FROM ' + table;

		// we want the exact server response returned by the adapter
		if (params.returnExactServerResponse && data) {
			opts.sql = opts.sql || {};
			opts.sql.where = opts.sql.where || {};

			if (_.isEmpty(data)) {
				// No result
				opts.sql.where[model.idAttribute] = "1=2";
			} else {
				// Find all idAttribute in the server response
				var ids = [];
				_.each(data, function(element) {
					ids.push(element[model.idAttribute]);
				});
				// this will select IDs in the sql query
				opts.sql.where[model.idAttribute] = ids;
			}
		}

		// execute the select query
		db = Ti.Database.open(dbName);

		// run a specific sql query if defined
		if (opts.query) {
			if (opts.query.params) {
				var rs = db.execute(opts.query.sql, opts.query.params);
			} else {
				var rs = db.execute(opts.query.sql);

logger(DEBUG, "\n******************************\nCollection total BEFORE read from db: " + model.length + " models\n******************************");
    }
    var sql = opts.query || 'SELECT * FROM ' + table;

    // we want the exact server response returned by the adapter
    if (params.returnExactServerResponse && data) {
      opts.sql = opts.sql || {};
      opts.sql.where = opts.sql.where || {};

      if (_.isEmpty(data)) {
        // No result
        opts.sql.where[model.idAttribute] = "1=2";
      } else {
        // Find all idAttribute in the server response
        var ids = [];
        _.each(data, function(element) {
          ids.push(element[model.idAttribute]);
        });
        // this will select IDs in the sql query
        opts.sql.where[model.idAttribute] = ids;
      }
    }

    // execute the select query
    db = Ti.Database.open(dbName);

    // run a specific sql query if defined
    if (opts.query) {
      if (opts.query.params) {
        var rs = db.execute(opts.query.sql, opts.query.params);
      } else {
        var rs = db.execute(opts.query.sql);

// use the where not operator
      wherenot = whereBuilder(wherenot, opts.wherenot, " != ");
      wherenot = wherenot.join(' AND ');
    } else {
      wherenot = opts.wherenot;
    }

    sql += ' AND ' + wherenot;
  }

  // LIKE
  if (opts.like) {
    var like;
    if ( typeof opts.like === 'object') {
      like = [];
      _.each(opts.like, function(value, f) {
        like.push(f + ' LIKE "%' + value + '%"');
      });
      like = like.join(' AND ');
      sql += ' AND ' + like;
    }
  }

  // LIKE OR
  if (opts.likeor) {
    var likeor;
    if ( typeof opts.likeor === 'object') {
      likeor = [];
      _.each(opts.likeor, function(value, f) {
        likeor.push(f + ' LIKE "%' + value + '%"');
      });
      likeor = likeor.join(' OR ');

}
  }
  config.columns = columns;

  // make sure we have a unique id field
  if (config.adapter.idAttribute) {
    if (!_.contains(_.keys(config.columns), config.adapter.idAttribute)) {
      throw 'config.adapter.idAttribute "' + config.adapter.idAttribute + '" not found in list of columns for table "' + table + '"\n' + 'columns: [' + _.keys(config.columns).join(',') + ']';
    }
  } else {
    Ti.API.info('No config.adapter.idAttribute specified for table "' + table + '"');
    Ti.API.info('Adding "' + ALLOY_ID_DEFAULT + '" to uniquely identify rows');

    var fullStrings = [],
      colStrings = [];
    _.each(config.columns, function(type, name) {
      colStrings.push(name);
      fullStrings.push(name + ' ' + type);
    });
    var colsString = colStrings.join(',');
    db.execute('ALTER TABLE ' + table + ' RENAME TO ' + table + '_temp;');
    db.execute('CREATE TABLE ' + table + '(' + fullStrings.join(',') + ',' + ALLOY_ID_DEFAULT + ' TEXT UNIQUE);');
    db.execute('INSERT INTO ' + table + '(' + colsString + ',' + ALLOY_ID_DEFAULT + ') SELECT ' + colsString + ',CAST(_ROWID_ AS TEXT) FROM ' + table + '_temp;');
    db.execute('DROP TABLE ' + table + '_temp;');
    config.columns[ALLOY_ID_DEFAULT] = 'TEXT UNIQUE';
    config.adapter.idAttribute = ALLOY_ID_DEFAULT;
  }

  // close the db handle
  db.close();
}

function Sync(method, model, opts) {
    var prefix = model.config.adapter.collection_name ? model.config.adapter.collection_name : "default", regex = new RegExp("^(" + prefix + ")\\-(.+)$"), resp = null;
    if ("read" === method) if (opts.parse) {
        var list = [];
        _.each(TAP.listProperties(), function(prop) {
            var match = prop.match(regex);
            null !== match && list.push(TAP.getObject(prop));
        });
        model.reset(list);
        resp = list;
    } else {
        var obj = TAP.getObject(prefix + "-" + model.id);
        model.set(obj);
        resp = model.toJSON();
    } else if ("create" === method || "update" === method) {
        if (!model.id) {
            model.id = guid();
            model.set(model.idAttribute, model.id);
        }
        TAP.setObject(prefix + "-" + model.id, model.toJSON() || {});
        resp = model.toJSON();

config.adapter.idAttribute ? config.adapter.idAttribute : ALLOY_ID_DEFAULT;
        for (var k in config.columns) {
            cName = k;
            cType = config.columns[k];
            cName !== ALLOY_ID_DEFAULT || config.adapter.idAttribute ? k === config.adapter.idAttribute && (cType += " UNIQUE") : config.adapter.idAttribute = ALLOY_ID_DEFAULT;
            columns[cName] = cType;
        }
    }
    config.columns = columns;
    if (config.adapter.idAttribute) {
        if (!_.contains(_.keys(config.columns), config.adapter.idAttribute)) throw 'config.adapter.idAttribute "' + config.adapter.idAttribute + '" not found in list of columns for table "' + table + '"\n' + "columns: [" + _.keys(config.columns).join(",") + "]";
    } else {
        Ti.API.info('No config.adapter.idAttribute specified for table "' + table + '"');
        Ti.API.info('Adding "' + ALLOY_ID_DEFAULT + '" to uniquely identify rows');
        var fullStrings = [], colStrings = [];
        _.each(config.columns, function(type, name) {
            colStrings.push(name);
            fullStrings.push(name + " " + type);
        });
        var colsString = colStrings.join(",");
        db.execute("ALTER TABLE " + table + " RENAME TO " + table + "_temp;");
        db.execute("CREATE TABLE " + table + "(" + fullStrings.join(",") + "," + ALLOY_ID_DEFAULT + " TEXT UNIQUE);");
        db.execute("INSERT INTO " + table + "(" + colsString + "," + ALLOY_ID_DEFAULT + ") SELECT " + colsString + ",CAST(_ROWID_ AS TEXT) FROM " + table + "_temp;");
        db.execute("DROP TABLE " + table + "_temp;");
        config.columns[ALLOY_ID_DEFAULT] = "TEXT UNIQUE";
        config.adapter.idAttribute = ALLOY_ID_DEFAULT;
    }
    db.close();
}

}
        for (var k in config.columns) {
            cName = k;
            cType = config.columns[k];
            cName !== ALLOY_ID_DEFAULT || config.adapter.idAttribute ? k === config.adapter.idAttribute && (cType += " UNIQUE") : config.adapter.idAttribute = ALLOY_ID_DEFAULT;
            columns[cName] = cType;
        }
    }
    config.columns = columns;
    if (config.adapter.idAttribute) {
        if (!_.contains(_.keys(config.columns), config.adapter.idAttribute)) throw 'config.adapter.idAttribute "' + config.adapter.idAttribute + '" not found in list of columns for table "' + table + '"\ncolumns: [' + _.keys(config.columns).join(",") + "]";
    } else {
        Ti.API.info('No config.adapter.idAttribute specified for table "' + table + '"');
        Ti.API.info('Adding "' + ALLOY_ID_DEFAULT + '" to uniquely identify rows');
        var fullStrings = [], colStrings = [];
        _.each(config.columns, function(type, name) {
            colStrings.push(name);
            fullStrings.push(name + " " + type);
        });
        var colsString = colStrings.join(",");
        db.execute("ALTER TABLE " + table + " RENAME TO " + table + "_temp;");
        db.execute("CREATE TABLE " + table + "(" + fullStrings.join(",") + "," + ALLOY_ID_DEFAULT + " TEXT UNIQUE);");
        db.execute("INSERT INTO " + table + "(" + colsString + "," + ALLOY_ID_DEFAULT + ") SELECT " + colsString + ",CAST(_ROWID_ AS TEXT) FROM " + table + "_temp;");
        db.execute("DROP TABLE " + table + "_temp;");
        config.columns[ALLOY_ID_DEFAULT] = "TEXT UNIQUE";
        config.adapter.idAttribute = ALLOY_ID_DEFAULT;
    }
    db.close();
}

function whereBuilder(where, data, operator) {
	var whereOperator = operator || " = ";

	_.each(data, function(v, f) {
		if (_.isArray(v)) {//select multiple items
			var innerWhere = [];
			_.each(v, function(value) {
				innerWhere.push(f + whereOperator + _valueType(value));
			});
			where.push(innerWhere.join(' OR '));
		} else if (_.isObject(v)) {
			where = whereBuilder(where, v, whereOperator);
		} else {
			where.push(f + whereOperator + _valueType(v));
		}
	});
	return where;
}