001// Copyright 2006, 2008, 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 015package org.apache.tapestry5.ioc; 016 017/** 018 * The source for the module instance needed by any service builders, service contributors and service decorators that 019 * are mapped to instance methods. 020 * <p/> 021 * Allows the creation of the module instance to be deferred until actually needed; in practical terms, when the 022 * builder/decorator/contributor is a <em>static</em> method on the module builder class, then a module instance is not 023 * needed. This allows Tapestry IOC to work around a tricky chicken-and-the-egg problem, whereby the constructor of a 024 * module instance requires contributions that originate in the same module. 025 * <p/> 026 * The term "module builder" has been deprecated; the current term is "module class", but this interface is left as-is 027 * for backwards compatibility. 028 */ 029public interface ModuleBuilderSource 030{ 031 /** 032 * Returns the instantiated version of the Tapestry IoC module class. 033 */ 034 Object getModuleBuilder(); 035}