src/ast/PropertyReference.js
/*
* Copyright 2002-2015 the original author or authors.
*
* 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.
*/
import {SpelNode} from './SpelNode';
/**
* Represents a simple property or field reference.
*
* @author Andy Clement
* @author Juergen Hoeller
* @author Clark Duplichien
* @author Ben March
* @since 0.2.0
*/
function createNode(nullSafeNavigation, propertyName, position) {
var node = SpelNode.create('property', position);
node.getRaw = function () {
return propertyName;
};
node.getValue = function (state) {
var context = state.activeContext.peek();
if (!context) {
if (nullSafeNavigation) {
return null;
}
throw {
name: 'ContextDoesNotExistException',
message: 'Attempting to look up property \''+ propertyName +'\' for an undefined context.'
};
}
if (context[propertyName] === undefined || context[propertyName] === null) {
//handle safe navigation
if (nullSafeNavigation) {
return null;
}
//handle conversion of Java properties to JavaScript properties
if (propertyName === 'size' && Array.isArray(context)) {
return context.length;
}
throw {
name: 'NullPointerException',
message: 'Property \'' + propertyName + '\' does not exist.'
};
}
return context[propertyName];
};
node.setValue = function (value, state) {
var context = state.activeContext.peek();
if (!context) {
throw {
name: 'ContextDoesNotExistException',
message: 'Attempting to assign property \''+ propertyName +'\' for an undefined context.'
};
}
/*jshint -W093 */
return context[propertyName] = value;
/*jshint +W093 */
};
node.getName = function () {
return propertyName;
};
return node;
}
export var PropertyReference = {
create: createNode
};