/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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.citrus.turbine.dataresolver;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* 用来标识一个参数,使之从request parameters中取得值。
* <p>
* 用法如下:
* </p>
* <ol>
* <li>仅指定参数名称:<code>@Param("name")</code>。</li>
* <li>指定参数名称,以及单个默认值:<code>@Param(name="name", defaultValue="123")</code>。</li>
* <li>指定参数名称,以及一组默认值:
* <code>@Param(name="name", defaultValues={"1", "2", "3"})</code>。</li>
* </ol>
*
* @author Michael Zhou
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.PARAMETER })
public @interface Param {
/**
* 用于标识param的名称。
* <p>
* 此参数用于简化的形式:<code>@Param("paramName")</code>。
* </p>
*/
String value() default "";
/**
* 用于标识param的名称。
* <p>
* 此参数用于有多个参数的形式:<code>@Param(name="paramName", defaultValue="123")</code>。
* </p>
*/
String name() default "";
/** 指定参数的默认值。 */
String defaultValue() default "";
/** 指定参数的默认值数组。 */
String[] defaultValues() default { };
}