| // Copyright 2004 The Apache Software Foundation |
| // |
| // 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 org.apache.tapestry; |
| |
| /** |
| * Interface that defines classes that may be messaged by the direct |
| * service. |
| * |
| * @author Howard Lewis Ship |
| * @version $Id$ |
| **/ |
| |
| public interface IDirect extends IComponent |
| { |
| /** |
| * Invoked by the direct service to have the component peform |
| * the appropriate action. The {@link org.apache.tapestry.link.DirectLink} component will |
| * notify its listener. |
| * |
| **/ |
| |
| public void trigger(IRequestCycle cycle); |
| |
| /** |
| * Invoked by the direct service to query the component as to |
| * whether it is stateful. If stateful and no |
| * {@link javax.servlet.http.HttpSession} is active, then a |
| * {@link org.apache.tapestry.StaleSessionException} is |
| * thrown by the service. |
| * |
| * @since 2.3 |
| * |
| **/ |
| |
| public boolean isStateful(); |
| |
| } |