/* | |
* 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.extension; | |
import java.lang.annotation.Documented; | |
import java.lang.annotation.ElementType; | |
import java.lang.annotation.Retention; | |
import java.lang.annotation.RetentionPolicy; | |
import java.lang.annotation.Target; | |
/** | |
* 扩展点接口的标识。 | |
* | |
* @author william.liangf | |
* @author ding.lid | |
*/ | |
@Documented | |
@Retention(RetentionPolicy.RUNTIME) | |
@Target({ElementType.TYPE}) | |
public @interface SPI { | |
/** | |
* 缺省扩展点名。 | |
*/ | |
String value() default ""; | |
} |