/*
* Copyright 2014 the original author or authors.
*
* 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 org.springframework.yarn.annotation;
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;
/**
* Annotation which indicates that a method parameter should be bound to a parameter.
*
* @author Janne Valkealahti
*
*/
@Target(ElementType.PARAMETER)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface YarnParameter {
/**
* The name of the parameter to bind to.
*
* @return the value
*/
String value() default "";
/**
* Whether the parameter is required.
* <p>
* Default is {@code true}, leading to an exception if the parameter is
* missing. Switch this to {@code false} if you prefer a {@code null} in
* case of the parameter missing.
*
* @return required
*/
boolean required() default true;
}