| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| package org.apache.commons.jexl3; |
| |
| /** |
| * Wraps an Object as a JEXL context and NamespaceResolver. |
| * |
| * @param <T> the wrapped object type to use |
| * @since 3.0 |
| */ |
| public class ObjectContext<T> implements JexlContext, JexlContext.NamespaceResolver { |
| |
| /** The property solving jexl engine. */ |
| private final JexlEngine jexl; |
| |
| /** The object serving as context provider. */ |
| private final T object; |
| |
| /** |
| * Creates a new ObjectContext. |
| * |
| * @param engine the jexl engine to use to solve properties |
| * @param wrapped the object to wrap in this context |
| */ |
| public ObjectContext(JexlEngine engine, T wrapped) { |
| this.jexl = engine; |
| this.object = wrapped; |
| } |
| |
| @Override |
| public Object get(String name) { |
| return jexl.getProperty(object, name); |
| } |
| |
| @Override |
| public void set(String name, Object value) { |
| jexl.setProperty(object, name, value); |
| } |
| |
| @Override |
| public boolean has(String name) { |
| return jexl.getUberspect().getPropertyGet(object, name) != null; |
| } |
| |
| @Override |
| public Object resolveNamespace(String name) { |
| if (name == null || name.isEmpty()) { |
| return object; |
| } else { |
| return null; |
| } |
| } |
| } |