This is an automated email from the ASF dual-hosted git repository. ahuber pushed a commit to branch dev/2.0.0-M2 in repository https://gitbox.apache.org/repos/asf/isis.git
commit ec87b99d95c9e10544affe199751164e83cb754a Author: Andi Huber <ahu...@apache.org> AuthorDate: Sun Oct 29 09:33:17 2017 +0100 ISIS-1755 JEE 7+ allow coexistence of CDI and Isis' ServiceInjector --- .../webapp/jee/IsisCDIBeanScanInterceptor.java | 97 ++++++++++++++++++++++ .../services/javax.enterprise.inject.spi.Extension | 1 + 2 files changed, 98 insertions(+) diff --git a/core/runtime/src/main/java/org/apache/isis/core/webapp/jee/IsisCDIBeanScanInterceptor.java b/core/runtime/src/main/java/org/apache/isis/core/webapp/jee/IsisCDIBeanScanInterceptor.java new file mode 100644 index 0000000..6632a59 --- /dev/null +++ b/core/runtime/src/main/java/org/apache/isis/core/webapp/jee/IsisCDIBeanScanInterceptor.java @@ -0,0 +1,97 @@ +/* + * 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.isis.core.webapp.jee; + +import java.util.HashSet; +import java.util.Set; + +import javax.enterprise.event.Observes; +import javax.enterprise.inject.spi.AfterBeanDiscovery; +import javax.enterprise.inject.spi.BeforeBeanDiscovery; +import javax.enterprise.inject.spi.Extension; +import javax.enterprise.inject.spi.ProcessAnnotatedType; + +import org.apache.isis.applib.annotation.DomainService; +import org.apache.isis.applib.services.metrics.MetricsService; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * + * A CDI inject extension @see <a href="https://docs.jboss.org/weld/reference/latest/en-US/html/extend.html">weld</a>, + * that lets CDI ignore certain Beans we declare tabu. + * <p> + * This extension is registered as a service provider by creating a file named + * {@code META-INF/services/javax.enterprise.inject.spi.Extension}, + * which contains the name of this extension class. + * </p> + * + * <p> + * Beans declared tabu are managed (meaning instantiation and dependency injection) + * by Isis itself. All other Beans are allowed to be managed by CDI. + * </p> + * + * @author ahu...@apache.org + * + */ +final class IsisCDIBeanScanInterceptor implements Extension { + + private static final Logger log = LoggerFactory.getLogger(IsisCDIBeanScanInterceptor.class); + + /** + * Declaration of Beans that are managed by Isis and should be ignored by CDI. + * (in addition to those that have the @DomainService annotation) + */ + private static final Set<String> tabu = new HashSet<>(); + { + tabu.add(MetricsService.class.getName()); + } + + void beforeBeanDiscovery(@Observes BeforeBeanDiscovery event) { + log.info("beginning the scanning process"); + } + + <T> void processAnnotatedType(@Observes ProcessAnnotatedType<T> event) { + + final String className = event.getAnnotatedType().getJavaClass().getName(); + + if(isTabu(className, event)) { + log.debug("veto type: " + className); + event.veto(); + } else { + log.debug("allowing type: " + className); + } + } + + void afterBeanDiscovery(@Observes AfterBeanDiscovery event) { + log.info("finished the scanning process"); + } + + // -- HELPER + + private boolean isTabu(String className, ProcessAnnotatedType<?> event) { + if(tabu.contains(className)) + return true; + if(event.getAnnotatedType().isAnnotationPresent(DomainService.class)) + return true; + + return false; + } + +} diff --git a/core/runtime/src/main/resources/META-INF/services/javax.enterprise.inject.spi.Extension b/core/runtime/src/main/resources/META-INF/services/javax.enterprise.inject.spi.Extension new file mode 100644 index 0000000..1be69b2 --- /dev/null +++ b/core/runtime/src/main/resources/META-INF/services/javax.enterprise.inject.spi.Extension @@ -0,0 +1 @@ +org.apache.isis.core.webapp.jee.IsisCDIBeanScanInterceptor \ No newline at end of file -- To stop receiving notification emails like this one, please contact ahu...@apache.org.