| // Copyright 2008 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.ioc; |
| |
| |
| /** |
| * Defines constants for built-in scopes (used with the {@link org.apache.tapestry5.ioc.annotations.Scope} annotation. |
| */ |
| public class ScopeConstants |
| { |
| /** |
| * The default scope is a singleton within the {@link org.apache.tapestry5.ioc.Registry}. A single instance will be |
| * created on demand. The lifespan of the instance lasts until the registry is {@linkplain Registry#shutdown() shut |
| * down}. <p/>Some implementations will want to know when the Registry is shutdown; they should register for |
| * notifications via the {@link org.apache.tapestry5.ioc.services.RegistryShutdownHub} service. |
| */ |
| public static final String DEFAULT = "singleton"; |
| |
| /** |
| * An alternate scope provided with Tapestry; a per-thread instance is created on demand, behind a shared proxy. |
| * Method invocations on the shared proxy are forwarded to the per-thread instance. Each per-thread instance lasts |
| * until the {@linkplain Registry#cleanupThread() thread is cleaned up} (at the end of a request for a web |
| * application). <p>Some implementations will want to be notified before being discarded and should register with |
| * the {@link org.apache.tapestry5.ioc.services.PerthreadManager} to receive notifications. |
| * |
| * @see org.apache.tapestry5.ioc.internal.services.PerThreadServiceLifecycle |
| */ |
| public static final String PERTHREAD = "perthread"; |
| } |