/*
 * Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate 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.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.planner.node;

import io.crate.planner.node.dql.*;
import io.crate.planner.node.dql.join.NestedLoopPhase;
import io.crate.planner.node.fetch.FetchPhase;

public class ExecutionPhaseVisitor<C, R> {

    public R process(ExecutionPhase phase, C context) {
        return phase.accept(this, context);
    }

    protected R visitExecutionPhase(ExecutionPhase phase, C context) {
        return null;
    }

    public R visitCollectPhase(CollectPhase phase, C context) {
        return visitExecutionPhase(phase, context);
    }

    public R visitRoutedCollectPhase(RoutedCollectPhase phase, C context) {
        return visitCollectPhase(phase, context);
    }

    public R visitMergePhase(MergePhase phase, C context) {
        return visitExecutionPhase(phase, context);
    }

    public R visitCountPhase(CountPhase phase, C context) {
        return visitExecutionPhase(phase, context);
    }

    public R visitFetchPhase(FetchPhase phase, C context) {
        return visitExecutionPhase(phase, context);
    }

    public R visitNestedLoopPhase(NestedLoopPhase phase, C context) {
        return visitExecutionPhase(phase, context);
    }

    public R visitFileUriCollectPhase(FileUriCollectPhase phase, C context) {
        return visitCollectPhase(phase, context);
    }

    public R visitTableFunctionCollect(TableFunctionCollectPhase phase, C context) {
        return visitCollectPhase(phase, context);
    }
}