containersetupscript.java

Java/J2EE框架Jdon-Framework系统的Sample

/**
 * Copyright 2005 Jdon.com
 * 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 com.jdon.controller;

import javax.servlet.ServletContext;
import org.picocontainer.MutablePicoContainer;
import org.picocontainer.defaults.DefaultPicoContainer;
import com.jdon.util.Debug;
import com.jdon.controller.container.ContainerBuilder;
import com.jdon.controller.container.DefaultContainerBuilder;
import java.util.Collection;
import com.jdon.controller.container.ContainerDirector;

/**
 * 容器启动脚本
 *
 * <p>Copyright: Jdon.com Copyright (c) 2005</p>
 * <p></p>
 * @author banq
 * @version JdonFramework 2005 v1.0
 */
public class ContainerSetupScript implements KeyConstants {
  public final static String module = ContainerSetupScript.class.getName();

  /**
   * init Application container
   * @param context ServletContext
   */
  public void initialized(ServletContext context) {
    try {
      MutablePicoContainer mc = new DefaultPicoContainer();
      ContainerBuilder cb = new DefaultContainerBuilder(mc);
      context.setAttribute(CONTAINER_FACTORY, cb);
      Debug.logVerbose(" init the container OK ..");
    } catch (Exception e) {
      Debug.logError(" initialized error: " + e, module);
      // Not all servlet containers print the nested exception. Do it here.
      context.log(e.getMessage(), e);
    }
  }

  /**
   * prepare to the xml Configure for container;
   * @param configList Collection
   * @param context ServletContext
   */
  public void prepare(Collection configList, ServletContext context) {
    ServletContainerFinder scf = new ServletContainerFinder();
    ContainerBuilder cb;
    try {
      cb = (ContainerBuilder) context.getAttribute(CONTAINER_FACTORY);
      if (cb == null){
        initialized(context);
        cb = (ContainerBuilder) context.getAttribute(CONTAINER_FACTORY);
      }
      ContainerDirector cd = new ContainerDirector(cb);
      cd.prepare(configList);
    } catch (Exception ex) {
      Debug.logError(ex, module);
    }
  }

  /**
   * startup Application container
   * @param configList Collection
   * @param context ServletContext
   */
  public void startup(ServletContext context) {
    ServletContainerFinder scf = new ServletContainerFinder();
    ContainerBuilder cb;
    try {
      cb = (ContainerBuilder) context.getAttribute(CONTAINER_FACTORY);
      if (cb == null) return;
      ContainerDirector cd = new ContainerDirector(cb);
      cd.startup();
    } catch (Exception ex) {
      Debug.logError(ex, module);
    }
  }



  /**
   * desroy Application container
   * @param context ServletContext
   */
  public void destroyed(ServletContext context) {
    try {
      ContainerBuilder cb = (ContainerBuilder) context.getAttribute(
          CONTAINER_FACTORY);
      if (cb != null) {
        ContainerWrapper cw = cb.getContainerWrapper();
        cw.stop();
        Debug.logVerbose(" stop the container ..");
      }
    } catch (Exception e) {
      Debug.logError(" destroyed error: " + e, module);
    }

  }

}