com.alipay.sofa.runtime.service.component.Reference Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.alipay.sofa.runtime.service.component;

import com.alipay.sofa.runtime.spi.binding.Contract;

/**
 * Reference Definition.
 *
 * @author xuanbei 18/3/1
 */
public interface Reference extends Contract {

    /**
     * Jvm first or not.
     *
     * @return true or false
     */
    boolean isJvmFirst();

    /**
     * Whether the reference is required.
     * @return true or false
     */
    boolean isRequired();

    /**
     * Set the reference is required.
     * @param required true or false
     */
    void setRequired(boolean required);
}