| /* 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 javax.portlet; |
| |
| import java.io.IOException; |
| |
| /** |
| * <div class="changed_added_3_0"> |
| * Listener that will be notified in the event that an asynchronous operation |
| * initiated on a <code>ResourceRequest</code> to which the listener had been added has |
| * completed, timed out, or resulted in an error. |
| * </div> |
| * |
| * @see PortletAsyncContext |
| * @see PortletAsyncEvent |
| * @since 3.0 |
| */ |
| public interface PortletAsyncListener { |
| |
| /** |
| * <div class="changed_added_3_0"> |
| * Notifies this <code>PortletAsyncListener</code> that an asynchronous operation |
| * has been completed. |
| * <p> |
| * The <code>PortletAsyncContext</code> corresponding to the asynchronous |
| * operation that has been completed may be obtained by calling |
| * <code>getAsyncContext</code> on the given event. |
| * <p> |
| * In addition, if this <code>PortletAsyncListener</code> had been registered |
| * via a call to <code>PortletAsyncContext#addListener(PortletAsyncListener, |
| * ResourceRequest, ResourceResponse)</code>, the supplied |
| * <code>ResourceRequest</code> and <code>ResourceResponse</code> objects may |
| * be retrieved by calling <code>getSuppliedRequest</code> and |
| * <code>getSuppliedResponse</code>, respectively, on the given event. |
| * <p> |
| * The <code>PortletAsyncContext</code> dispatch and complete methods may not be invoked |
| * within this method. |
| * </div> |
| * |
| * @param evt the <code>PortletAsyncEvent</code> indicating that an asynchronous operation has been completed |
| * @throws IOException if an I/O related error has occurred during the processing |
| */ |
| public void onComplete(PortletAsyncEvent evt) throws IOException; |
| |
| /** |
| * <div class="changed_added_3_0"> |
| * Notifies this <code>PortletAsyncListener</code> that an asynchronous |
| * operation has failed to complete. |
| * <p> |
| * The <code>PortletAsyncContext</code> corresponding to the asynchronous |
| * operation that failed to complete may be obtained by calling |
| * <code>getAsyncContext</code> on the given event. |
| * <p> |
| * In addition, if this <code>PortletAsyncListener</code> had been registered |
| * via a call to <code>PortletAsyncContext#addListener(PortletAsyncListener, |
| * ResourceRequest, ResourceResponse)</code>, the supplied |
| * <code>ResourceRequest</code> and <code>ResourceResponse</code> objects may |
| * be retrieved by calling <code>getSuppliedRequest</code> and |
| * <code>getSuppliedResponse</code>, respectively, on the given event. |
| * <p> |
| * The <code>PortletAsyncContext</code> dispatch and complete methods may be invoked |
| * within this method. |
| * </div> |
| * |
| * @param evt the PortletAsyncEvent indicating that an asynchronous operation has |
| * encountered an error |
| * @throws IOException if an I/O related error has occurred during the processing |
| */ |
| public void onError(PortletAsyncEvent evt) throws IOException; |
| |
| /** |
| * <div class="changed_added_3_0"> |
| * Notifies this <code>PortletAsyncListener</code> that a new asynchronous cycle is |
| * being initiated via a call to one of the <code>ResourceRequest</code>#startAsync |
| * methods. |
| * <p> |
| * The <code>PortletAsyncContext</code> corresponding to the asynchronous |
| * operation that is being reinitialized may be obtained by calling |
| * <code>getAsyncContext</code> on the given event. |
| * <p> |
| * In addition, if this <code>PortletAsyncListener</code> had been registered |
| * via a call to <code>PortletAsyncContext#addListener(PortletAsyncListener, |
| * ResourceRequest, ResourceResponse)</code>, the supplied |
| * <code>ResourceRequest</code> and <code>ResourceResponse</code> objects may |
| * be retrieved by calling <code>getSuppliedRequest</code> and |
| * <code>getSuppliedResponse</code>, respectively, on the given event. |
| * <p> |
| * This <code>PortletAsyncListener</code> will not receive any events related |
| * to the new asynchronous cycle unless it registers itself (via a call to |
| * <code>PortletAsyncContext</code>#addListener) with the |
| * <code>PortletAsyncContext</code> that is delivered as part of the given |
| * event. |
| * </div> |
| * |
| * @param evt the PortletAsyncEvent indicating that an asynchronous operation |
| * is being initiated |
| * @throws IOException if an I/O related error has occurred during the processing |
| */ |
| public void onStartAsync(PortletAsyncEvent evt) throws IOException; |
| |
| /** |
| * <div class="changed_added_3_0"> |
| * Notifies this <code>PortletAsyncListener</code> that an asynchronous operation |
| * has timed out. |
| * <p> |
| * The <code>PortletAsyncContext</code> corresponding to the asynchronous |
| * operation that has timed out may be obtained by calling |
| * <code>getAsyncContext</code> on the given event. |
| * <p> |
| * In addition, if this <code>PortletAsyncListener</code> had been registered |
| * via a call to <code>PortletAsyncContext#addListener(PortletAsyncListener, |
| * ResourceRequest, ResourceResponse)</code>, the supplied |
| * <code>ResourceRequest</code> and <code>ResourceResponse</code> objects may |
| * be retrieved by calling <code>getSuppliedRequest</code> and |
| * <code>getSuppliedResponse</code>, respectively, on the given event. |
| * <p> |
| * The <code>PortletAsyncContext</code> dispatch and complete methods may be invoked |
| * within this method. |
| * |
| * </div> |
| * |
| * @param evt the PortletAsyncEvent indicating that an asynchronous operation has |
| * timed out |
| * @throws IOException if an I/O related error has occurred during the processing |
| */ |
| public void onTimeout(PortletAsyncEvent evt) throws IOException; |
| |
| } |