1 /* 2 * JBoss, Home of Professional Open Source 3 * Copyright 2014, Red Hat, Inc. and/or its affiliates, and individual 4 * contributors by the @authors tag. See the copyright.txt in the 5 * distribution for a full listing of individual contributors. 6 * 7 * Licensed under the Apache License, Version 2.0 (the "License"); 8 * you may not use this file except in compliance with the License. 9 * You may obtain a copy of the License at 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.jboss.as.quickstart.cdi.veto; 18 19 import java.util.logging.Logger; 20 21 import javax.enterprise.event.Observes; 22 import javax.enterprise.inject.spi.Extension; 23 import javax.enterprise.inject.spi.ProcessAnnotatedType; 24 import javax.persistence.Entity; 25 26 /** 27 * Very basic CDI veto extension. 28 */ 29 public class VetoExtension implements Extension { 30 31 private final Logger log = Logger.getLogger("VetoExtension"); 32 33 /** 34 * CDI observer method, listens to the {@link ProcessAnnotatedType} event to apply a veto to all JPA entities. 35 * @param pat Payload of the bootstrap event. 36 */ 37 public <T> void vetoEnties(@Observes ProcessAnnotatedType<T> pat) { 38 // Look to see if the AnnotatedType also contains the JPA Entity annotation 39 if (pat.getAnnotatedType().getAnnotation(Entity.class) != null) { 40 // Veto the JPA entity to avoid developers injecting entities without allowing JPA to 41 // manage the entity lifecycle. 42 pat.veto(); 43 log.info("Vetoed class " + pat.getAnnotatedType().getJavaClass()); 44 } 45 } 46 }