content: package act.controller.meta;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import static act.Destroyable.Util.destroyAll;
  
  import act.Act;
  import act.app.App;
  import act.app.AppClassLoader;
  import act.app.event.SysEventId;
  import act.asm.Type;
  import act.util.*;
  
  import java.util.HashMap;
  import java.util.Map;
  import javax.enterprise.context.ApplicationScoped;
  import javax.inject.Inject;
  
  @ApplicationScoped
  public class ControllerClassMetaInfoManager extends LogSupportedDestroyableBase {
  
      private Map<String, ControllerClassMetaInfo> controllers = new HashMap<>();
  
      @Inject
      public ControllerClassMetaInfoManager(App app) {
          app.jobManager().on(SysEventId.APP_CODE_SCANNED, "ControllerClassMetaInfoManager:buildControllerHierarchies", new Runnable() {
              @Override
              public void run() {
                  buildControllerHierarchies();
              }
          });
      }
  
      @Override
      protected void releaseResources() {
          destroyAll(controllers.values(), ApplicationScoped.class);
          controllers.clear();
          super.releaseResources();
      }
  
      public void registerControllerMetaInfo(ControllerClassMetaInfo metaInfo) {
          String className = Type.getObjectType(metaInfo.className()).getClassName();
          controllers.put(className, metaInfo);
          trace("Controller meta info registered for: %s", className);
      }
  
      public ControllerClassMetaInfo controllerMetaInfo(String className) {
          return controllers.get(className);
      }
  
      public void mergeActionMetaInfo(App app) {
          for (ControllerClassMetaInfo info : controllers.values()) {
              info.merge(this, app);
          }
      }
  
      public void buildControllerHierarchies() {
          AppClassLoader cl = Act.app().classLoader();
          ControllerClassMetaInfoManager manager = cl.controllerClassMetaInfoManager();
          ClassInfoRepository repo = cl.classInfoRepository();
          for (ControllerClassMetaInfo info : manager.controllers.values()) {
              buildSuperClassMetaInfo(info, manager, repo);
          }
      }
  
      private static void buildSuperClassMetaInfo(ControllerClassMetaInfo info, ControllerClassMetaInfoManager manager, ClassInfoRepository repo) {
          String className = info.className();
          ClassNode node = repo.node(className);
          if (null == node) {
              return;
          }
          ClassNode parent = node.parent();
          final String OBJECT = Object.class.getName();
          while (null != parent && !OBJECT.equals(parent.name())) {
              ControllerClassMetaInfo parentInfo = manager.controllerMetaInfo(parent.name());
              if (null != parentInfo) {
                  info.parent(parentInfo);
                  break;
              }
              parent = parent.parent();
          }
      }
  
  }
  