/* | |
* Copyright 1999-2011 Alibaba Group. | |
* | |
* 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 com.alibaba.dubbo.common.compiler.support; | |
import com.alibaba.dubbo.common.compiler.Compiler; | |
import com.alibaba.dubbo.common.extension.Adaptive; | |
import com.alibaba.dubbo.common.extension.ExtensionLoader; | |
/** | |
* AdaptiveCompiler. (SPI, Singleton, ThreadSafe) | |
* | |
* @author william.liangf | |
*/ | |
@Adaptive | |
public class AdaptiveCompiler implements Compiler { | |
private static volatile String DEFAULT_COMPILER; | |
public static void setDefaultCompiler(String compiler) { | |
DEFAULT_COMPILER = compiler; | |
} | |
public Class<?> compile(String code, ClassLoader classLoader) { | |
Compiler compiler; | |
ExtensionLoader<Compiler> loader = ExtensionLoader.getExtensionLoader(Compiler.class); | |
String name = DEFAULT_COMPILER; // copy reference | |
if (name != null && name.length() > 0) { | |
compiler = loader.getExtension(name); | |
} else { | |
compiler = loader.getDefaultExtension(); | |
} | |
return compiler.compile(code, classLoader); | |
} | |
} |