| /* |
| * 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.commons.jci.compilers; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.commons.jci.utils.ConversionUtils; |
| |
| |
| /** |
| * Creates JavaCompilers |
| * |
| * TODO use META-INF discovery mechanism |
| * |
| * @author tcurdt |
| */ |
| public final class JavaCompilerFactory { |
| |
| /** |
| * @deprecated will be remove after the next release, please create an instance yourself |
| */ |
| @Deprecated |
| private static final JavaCompilerFactory INSTANCE = new JavaCompilerFactory(); |
| |
| private final Map<String, Class<?>> classCache = new HashMap<String, Class<?>>(); |
| |
| /** |
| * @deprecated will be remove after the next release, please create an instance yourself |
| */ |
| @Deprecated |
| public static JavaCompilerFactory getInstance() { |
| return JavaCompilerFactory.INSTANCE; |
| } |
| |
| /** |
| * Tries to guess the class name by convention. So for compilers |
| * following the naming convention |
| * |
| * org.apache.commons.jci.compilers.SomeJavaCompiler |
| * |
| * you can use the short-hands "some"/"Some"/"SOME". Otherwise |
| * you have to provide the full class name. The compiler is |
| * getting instanciated via (cached) reflection. |
| * |
| * @param pHint |
| * @return JavaCompiler or null |
| */ |
| public JavaCompiler createCompiler(final String pHint) { |
| |
| final String className; |
| if (pHint.indexOf('.') < 0) { |
| className = "org.apache.commons.jci.compilers." + ConversionUtils.toJavaCasing(pHint) + "JavaCompiler"; |
| } else { |
| className = pHint; |
| } |
| |
| Class<?> clazz = classCache.get(className); |
| |
| if (clazz == null) { |
| try { |
| clazz = Class.forName(className); |
| classCache.put(className, clazz); |
| } catch (ClassNotFoundException e) { |
| clazz = null; |
| } |
| } |
| |
| if (clazz == null) { |
| return null; |
| } |
| |
| try { |
| return (JavaCompiler) clazz.newInstance(); |
| } catch (Throwable t) { |
| return null; |
| } |
| } |
| |
| } |