| /* |
| * Copyright 2010 Google Inc. |
| * |
| * 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. |
| */ |
| package com.google.gwt.requestfactory.client.impl; |
| |
| import com.google.gwt.editor.client.AutoBean; |
| import com.google.gwt.editor.client.AutoBeanUtils; |
| import com.google.gwt.requestfactory.shared.EntityProxy; |
| |
| /** |
| * Contains static implementation methods used by the AutoBean generator. |
| */ |
| public class EntityProxyCategory { |
| static final String REQUEST_CONTEXT = "requestContext"; |
| static final String REQUEST_FACTORY = "requestFactory"; |
| static final String STABLE_ID = "stableId"; |
| |
| public static boolean equals(AutoBean<? extends EntityProxy> bean, Object o) { |
| if (!(o instanceof EntityProxy)) { |
| return false; |
| } |
| AutoBean<EntityProxy> other = AutoBeanUtils.getAutoBean((EntityProxy) o); |
| if (other == null) { |
| // Unexpected, could be an user-provided implementation? |
| return false; |
| } |
| |
| // Object comparison intentional. True if both null or both the same |
| return stableId(bean).equals(stableId(other)) |
| && requestContext(bean) == requestContext(other); |
| } |
| |
| /** |
| * Hashcode is always that of the stableId, since it's stable across time. |
| */ |
| public static int hashCode(AutoBean<? extends EntityProxy> bean) { |
| return stableId(bean).hashCode(); |
| } |
| |
| public static AbstractRequestContext requestContext( |
| AutoBean<? extends EntityProxy> bean) { |
| return (AbstractRequestContext) bean.getTag(REQUEST_CONTEXT); |
| } |
| |
| public static AbstractRequestFactory requestFactory( |
| AutoBean<? extends EntityProxy> bean) { |
| return (AbstractRequestFactory) bean.getTag(REQUEST_FACTORY); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static <T extends EntityProxy> SimpleEntityProxyId<T> stableId( |
| AutoBean<? extends T> bean) { |
| return (SimpleEntityProxyId<T>) bean.getTag(STABLE_ID); |
| } |
| |
| /** |
| * Sniff all return values and ensure that if the current bean is a mutable |
| * EntityProxy, that its return values are mutable. |
| */ |
| // CHECKSTYLE_OFF |
| public static <T> T __intercept(AutoBean<? extends EntityProxy> bean, |
| T returnValue) { |
| // CHECKSTYLE_ON |
| if (!(returnValue instanceof EntityProxy)) { |
| return returnValue; |
| } |
| AbstractRequestContext context = requestContext(bean); |
| /* |
| * The context will be null if the bean is immutable. If the context is |
| * locked, don't try to edit. |
| */ |
| if (context == null || context.isLocked()) { |
| return returnValue; |
| } |
| |
| @SuppressWarnings("unchecked") |
| T toReturn = (T) context.edit((EntityProxy) returnValue); |
| return toReturn; |
| } |
| } |