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Asynchronous and scheduled task executor

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/*
 * Copyright (c) 2019-2023 Sonu Kumar
 *
 * 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
 *
 *     https://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.github.sonus21.rqueue.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;

/**
 * This designated any public method as listener given the containing method is also annotated with
 * {@link RqueueListener}. In a class there must be exactly one primary one handler.
 *
 * Registering more than one primary handler is not allowed.
 */
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface RqueueHandler {

  /**
   * When true, designate that this is the default method only one method can be so designated.
   *
   * @return true if this is the default method.
   */
  boolean primary() default false;
}