Java tutorial
/* * Copyright 2012-2013 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. */ package org.springsource.restbucks.order.web; import org.springframework.data.rest.core.event.AbstractRepositoryEventListener; import org.springframework.stereotype.Component; import org.springsource.restbucks.order.Order; /** * Event listener to reject {@code DELETE} requests to Spring Data REST. * * @author Oliver Gierke */ @Component class OrderControllerEventListener extends AbstractRepositoryEventListener<Order> { /* * (non-Javadoc) * @see org.springframework.data.rest.repository.context.AbstractRepositoryEventListener#onBeforeDelete(java.lang.Object) */ @Override protected void onBeforeDelete(Order order) { if (order.isPaid()) { throw new OrderAlreadyPaidException(); } } }