foam-framework
Version:
MVC metaprogramming framework
45 lines (40 loc) • 1.21 kB
JavaScript
/*
* @license
* Copyright 2015 Google Inc. All Rights Reserved.
*
* 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.
*/
CLASS({
name: 'DefaultObjectDAO',
package: 'foam.core.dao',
help: 'A DAO decorator that will generate a default object if no object is found on a .find() call.',
extends: 'foam.dao.ProxyDAO',
properties: [
{
name: 'factory',
help: 'A factory method to construct the default object.'
}
],
methods: {
find: function(q, sink) {
var self = this;
var mysink = {
put: sink.put.bind(sink),
error: function() {
sink.put(self.factory(q));
},
};
this.delegate.find(q, mysink);
}
}
});