UnresolvedPlanBuilder.java

/*
 *   Copyright 2019 Amazon.com, Inc. or its affiliates. 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.
 *   A copy of the License is located at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   or in the "license" file accompanying this file. This file 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.amazon.opendistroforelasticsearch.sql.ppl.plans.logical.builder;

import com.amazon.opendistroforelasticsearch.sql.ppl.plans.logical.UnresolvedPlan;
import lombok.AllArgsConstructor;

/**
 * Abstract builder for unresolved plans
 * @param <T> UnresolvedPlan subclass
 */
@AllArgsConstructor
public abstract class UnresolvedPlanBuilder<T extends UnresolvedPlan> {
    private T plan;

    public abstract UnresolvedPlan build();

    public abstract UnresolvedPlanBuilder attachPlan(UnresolvedPlan attach);
}