| // Copyright 2010 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.tapestry5.annotations; |
| |
| import static java.lang.annotation.RetentionPolicy.RUNTIME; |
| import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.COMPONENT; |
| import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.MIXIN; |
| import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.PAGE; |
| |
| import java.lang.annotation.Documented; |
| import java.lang.annotation.ElementType; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.Target; |
| |
| import org.apache.tapestry5.internal.transform.HeartbeatDeferredWorker; |
| import org.apache.tapestry5.ioc.annotations.UseWith; |
| import org.apache.tapestry5.services.Heartbeat; |
| |
| /** |
| * Marks a component method as deferred until the end of the {@link Heartbeat}. This |
| * is only allowed on void methods that do not throw exceptions. The invocation is captured |
| * and will execute at the end of the current Heartbeat. |
| * <p> |
| * This annotation should be used with care, since deferring the invocation can change its semantics. For example, the |
| * value stored in instance variables may change between the time the method is invoked and the time it eventually |
| * executes. Likewise, runtime exceptions thrown by the method can not be caught by the invoking method. |
| * <p> |
| * Annotated methods must return void, and not declare any checked exceptions. |
| * |
| * @since 5.2.0 |
| * @see HeartbeatDeferredWorker |
| */ |
| @Target(ElementType.METHOD) |
| @Retention(RUNTIME) |
| @Documented |
| @UseWith( |
| { COMPONENT, MIXIN, PAGE }) |
| public @interface HeartbeatDeferred |
| { |
| |
| } |