10.2. 展開ライフサイクルロジックからの構造認識の分離

public interface DeploymentStages {
   /** The not installed stage - nothing is done here */
   DeploymentStage NOT_INSTALLED = new DeploymentStage("Not Installed");

   /** The pre parse stage - where pre parsing stuff can be prepared; altDD, ignore, ... */
   DeploymentStage PRE_PARSE = new DeploymentStage("PreParse", NOT_INSTALLED);

   /** The parse stage - where metadata is read */
   DeploymentStage PARSE = new DeploymentStage("Parse", PRE_PARSE);

   /** The post parse stage - where metadata can be fixed up */
   DeploymentStage POST_PARSE = new DeploymentStage("PostParse", PARSE);

   /** The pre describe stage - where default dependencies metadata can be created */
   DeploymentStage PRE_DESCRIBE = new DeploymentStage("PreDescribe", POST_PARSE);

   /** The describe stage - where dependencies are established */
   DeploymentStage DESCRIBE = new DeploymentStage("Describe", PRE_DESCRIBE);

   /** The classloader stage - where classloaders are created */
   DeploymentStage CLASSLOADER = new DeploymentStage("ClassLoader", DESCRIBE);

   /** The post classloader stage - e.g. aop */
   DeploymentStage POST_CLASSLOADER = new DeploymentStage("PostClassLoader", CLASSLOADER);

   /** The pre real stage - where before real deployments are done */
   DeploymentStage PRE_REAL = new DeploymentStage("PreReal", POST_CLASSLOADER);

   /** The real stage - where real deployment processing is done */
   DeploymentStage REAL = new DeploymentStage("Real", PRE_REAL);

   /** The installed stage - could be used to provide valve in future? */
   DeploymentStage INSTALLED = new DeploymentStage("Installed", REAL);
}

public class StdioDeployer extends AbstractDeployer {
   public void deploy(DeploymentUnit unit) throws DeploymentException
   {
      System.out.println("Deploying unit: " + unit);
   }

   @Override
   public void undeploy(DeploymentUnit unit)
   {
      System.out.println("Undeploying unit: " + unit);
   }
}

<bean name="StdioDeployer" class="org.jboss.acme.StdioDeployer"/>