/*
    * 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.syncope.core.persistence.jpa.spring;
  
  import java.util.Objects;
  import javax.persistence.Entity;
  import org.apache.syncope.core.persistence.jpa.entity.AbstractEntity;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
  import org.springframework.core.type.filter.AnnotationTypeFilter;
  import org.springframework.orm.jpa.persistenceunit.MutablePersistenceUnitInfo;
  import org.springframework.orm.jpa.persistenceunit.PersistenceUnitPostProcessor;
  
  /**
   * Allows having JPA entities spread in several JAR files; this is needed in order to support the Syncope extensions.
   */
  public class MultiJarAwarePersistenceUnitPostProcessor implements PersistenceUnitPostProcessor {
  
      private static final Logger LOG = LoggerFactory.getLogger(MultiJarAwarePersistenceUnitPostProcessor.class);
  
      @Override
      public void postProcessPersistenceUnitInfo(final MutablePersistenceUnitInfo pui) {
          ClassPathScanningCandidateComponentProvider scanner = new ClassPathScanningCandidateComponentProvider(false);
          scanner.addIncludeFilter(new AnnotationTypeFilter(Entity.class));
  
          scanner.findCandidateComponents(AbstractEntity.class.getPackage().getName()).forEach(bd -> {
              LOG.debug("Adding JPA entity {}", bd.getBeanClassName());
              pui.addManagedClassName(Objects.requireNonNull(bd.getBeanClassName()));
          });
      }
  }