/*
 * 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.statement.component;

import org.apache.iotdb.db.queryengine.execution.operator.window.WindowType;
import org.apache.iotdb.db.queryengine.plan.analyze.ExpressionAnalyzer;
import org.apache.iotdb.db.queryengine.plan.expression.Expression;
import org.apache.iotdb.db.queryengine.plan.statement.StatementNode;

public abstract class GroupByComponent extends StatementNode {

  protected Expression controlColumnExpression;

  private boolean ignoringNull;

  private final WindowType windowType;

  protected GroupByComponent(WindowType windowType) {
    this.windowType = windowType;
  }

  public WindowType getWindowType() {
    return windowType;
  }

  public void setControlColumnExpression(Expression controlColumnExpression) {
    this.controlColumnExpression =
        ExpressionAnalyzer.toLowerCaseExpression(controlColumnExpression);
  }

  public Expression getControlColumnExpression() {
    return controlColumnExpression;
  }

  public void setIgnoringNull(boolean ignoringNull) {
    this.ignoringNull = ignoringNull;
  }

  public boolean isIgnoringNull() {
    return ignoringNull;
  }
}
