001    // Copyright 2009 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.ioc;
016    
017    /**
018     * Extension to {@link org.apache.tapestry5.ioc.ServiceLifecycle} that adds an additional method.
019     */
020    public interface ServiceLifecycle2   extends ServiceLifecycle
021    {
022        /**
023         * If true, then lifecycle requires a proxy, meaning it is only useable with services that properly define a service
024         * interface. The default (singleton) scope does not require a proxy, but most other service scopes do. The default
025         * (when wrapping a {@link org.apache.tapestry5.ioc.ServiceLifecycle} as a {@link
026         * org.apache.tapestry5.ioc.ServiceLifecycle2} is to return true.
027         *
028         * @return true if proxying is necesssary, false otherwise
029         */
030        boolean requiresProxy();
031    }