| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.myfaces.extensions.scripting.loaders.java; |
| |
| import org.apache.myfaces.extensions.scripting.api.ScriptingConst; |
| |
| import java.lang.annotation.Annotation; |
| import java.util.Map; |
| import java.util.HashMap; |
| |
| /** |
| * @author werpu |
| * A dynamic class identifier for java classes |
| * <p/> |
| * TODO the algorithm of this class probably is obsolete, normally |
| * a check for the classloader of the class being an instance |
| * of our custom classloader ought to be enough, this has to be tested |
| * though |
| */ |
| public class DynamicClassIdentifier implements org.apache.myfaces.extensions.scripting.api.DynamicClassIdentifier { |
| static ThreadLocal _checked = new ThreadLocal(); |
| |
| public boolean isDynamic(Class clazz) { |
| Map<String, Boolean> alreadyChecked = getAlreadyChecked(); |
| if (alreadyChecked.containsKey(clazz.getName())) { |
| return alreadyChecked.get(clazz.getName()); |
| } |
| if (checkForAnnotation(clazz)) { |
| alreadyChecked.put(clazz.getName(), Boolean.TRUE); |
| return true; |
| } |
| |
| alreadyChecked.put(clazz.getName(), Boolean.FALSE); |
| return false; |
| } |
| |
| private Map<String, Boolean> getAlreadyChecked() { |
| Map<String, Boolean> checked = (Map<String, Boolean>) _checked.get(); |
| if (checked == null) { |
| checked = new HashMap<String, Boolean>(); |
| _checked.set(checked); |
| } |
| return checked; |
| } |
| |
| private final boolean checkForAnnotation(Class clazz) { |
| //Annotation identifier = clazz.getAnnotation(ScriptingClass.class); |
| if (clazz.getClassLoader() == null) return false; |
| |
| Annotation identifier = clazz.getClassLoader().getClass().getAnnotation(JavaThrowAwayClassloader.class); |
| boolean annotated = identifier != null; |
| |
| return annotated; |
| } |
| |
| public int getEngineType(Class clazz) { |
| if (isDynamic(clazz)) { |
| return ScriptingConst.ENGINE_TYPE_JSF_JAVA; |
| } else { |
| return ScriptingConst.ENGINE_TYPE_JSF_NO_ENGINE; |
| } |
| } |
| } |