| // Copyright 2005, 2006, 2007, 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.internal.services; |
| |
| import javassist.CtClass; |
| import org.apache.tapestry5.ioc.internal.util.OneShotLock; |
| import org.slf4j.Logger; |
| |
| /** |
| * Base class for {@link org.apache.tapestry5.ioc.internal.services.ClassFabImpl}. This code is a fork from HiveMind; it |
| * is kept seperate from ClassFabImpl in case we want to re-introduce the idea of an InterfaceFab. |
| */ |
| public class AbstractFab |
| { |
| protected final OneShotLock lock = new OneShotLock(); |
| |
| private final CtClass ctClass; |
| |
| private final CtClassSource source; |
| |
| private final Logger logger; |
| |
| public AbstractFab(CtClassSource source, CtClass ctClass, Logger logger) |
| { |
| this.ctClass = ctClass; |
| this.source = source; |
| this.logger = logger; |
| } |
| |
| public void addInterface(Class interfaceClass) |
| { |
| lock.check(); |
| |
| CtClass ctInterfaceClass = source.toCtClass(interfaceClass); |
| |
| try |
| { |
| for (CtClass existing : ctClass.getInterfaces()) |
| if (existing == ctInterfaceClass) return; |
| } |
| catch (Exception ex) |
| { |
| // Don't think this code is actually reachable. |
| } |
| |
| ctClass.addInterface(ctInterfaceClass); |
| } |
| |
| protected CtClass[] toCtClasses(Class[] inputClasses) |
| { |
| if (inputClasses == null || inputClasses.length == 0) return null; |
| |
| int count = inputClasses.length; |
| CtClass[] result = new CtClass[count]; |
| |
| for (int i = 0; i < count; i++) |
| { |
| CtClass ctClass = toCtClass(inputClasses[i]); |
| |
| result[i] = ctClass; |
| } |
| |
| return result; |
| } |
| |
| protected CtClass toCtClass(Class inputClass) |
| { |
| return source.toCtClass(inputClass); |
| } |
| |
| public Class createClass() |
| { |
| lock.lock(); |
| |
| if (logger.isDebugEnabled()) logger.debug(String.format("Creating class from %s", this)); |
| |
| return source.createClass(ctClass); |
| } |
| |
| protected CtClass getCtClass() |
| { |
| return ctClass; |
| } |
| |
| protected CtClassSource getSource() |
| { |
| return source; |
| } |
| |
| } |