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/*
 * Copyright © 2021-present Arcade Data Ltd ([email protected])
 *
 * 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.
 *
 * SPDX-FileCopyrightText: 2021-present Arcade Data Ltd ([email protected])
 * SPDX-License-Identifier: Apache-2.0
 */
package com.arcadedb.query.sql.executor;

import com.arcadedb.query.sql.parser.Expression;

import java.util.*;

/**
 * Delegates to an aggregate function for aggregation calculation
 *
 * @author Luigi Dell'Aquila (luigi.dellaquila-(at)-gmail.com)
 */
public class FunctionAggregationContext implements AggregationContext {
  private final SQLFunction      aggregateFunction;
  private       List params;

  public FunctionAggregationContext(final SQLFunction function, final List params) {
    this.aggregateFunction = function;
    this.params = params;
    if (this.params == null)
      this.params = new ArrayList<>();
  }

  @Override
  public Object getFinalValue() {
    return aggregateFunction.getResult();
  }

  @Override
  public void apply(final Result next, final CommandContext context) {
    final List