/*
 * 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 org.apache.iotdb.db.queryengine.plan.relational.planner.assertions;

import org.apache.iotdb.db.queryengine.plan.relational.planner.OrderingScheme;
import org.apache.iotdb.db.queryengine.plan.relational.planner.Symbol;
import org.apache.iotdb.db.queryengine.plan.relational.planner.assertions.PlanMatchPattern.Ordering;

import java.util.List;

final class Util {
  private Util() {}

  static boolean orderingSchemeMatches(
      List<Ordering> expectedOrderBy, OrderingScheme orderingScheme, SymbolAliases symbolAliases) {
    if (expectedOrderBy.size() != orderingScheme.getOrderBy().size()) {
      return false;
    }

    for (int i = 0; i < expectedOrderBy.size(); ++i) {
      Ordering ordering = expectedOrderBy.get(i);
      Symbol symbol = Symbol.from(symbolAliases.get(ordering.getField()));
      if (!symbol.equals(orderingScheme.getOrderBy().get(i))) {
        return false;
      }
      if (ordering.getSortOrder() != orderingScheme.getOrdering(symbol)) {
        return false;
      }
    }

    return true;
  }
}
