/*
 * 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.query.timegenerator;

import static org.apache.iotdb.tsfile.read.expression.ExpressionType.AND;
import static org.apache.iotdb.tsfile.read.expression.ExpressionType.OR;

import java.io.IOException;
import org.apache.iotdb.db.exception.StorageEngineException;
import org.apache.iotdb.db.query.context.QueryContext;
import org.apache.iotdb.tsfile.exception.write.UnSupportedDataTypeException;
import org.apache.iotdb.tsfile.read.expression.IBinaryExpression;
import org.apache.iotdb.tsfile.read.expression.IExpression;
import org.apache.iotdb.tsfile.read.query.timegenerator.node.AndNode;
import org.apache.iotdb.tsfile.read.query.timegenerator.node.Node;
import org.apache.iotdb.tsfile.read.query.timegenerator.node.OrNode;

/**
 * Construct node in expression tree while reading process.
 */
public abstract class AbstractNodeConstructor {

  /**
   * Construct expression node.
   *
   * @param expression expression
   * @return Node object
   * @throws IOException IOException
   * @throws StorageEngineException StorageEngineException
   */
  public abstract Node construct(IExpression expression, QueryContext context)
      throws StorageEngineException;

  /**
   * Construct not series type node.
   *
   * @param expression expression
   * @return Node object
   * @throws StorageEngineException StorageEngineException
   */
  protected Node constructNotSeriesNode(IExpression expression, QueryContext context)
      throws StorageEngineException {
    Node leftChild;
    Node rightChild;
    if (expression.getType() == OR) {
      leftChild = this.construct(((IBinaryExpression) expression).getLeft(), context);
      rightChild = this.construct(((IBinaryExpression) expression).getRight(), context);
      return new OrNode(leftChild, rightChild);
    } else if (expression.getType() == AND) {
      leftChild = this.construct(((IBinaryExpression) expression).getLeft(), context);
      rightChild = this.construct(((IBinaryExpression) expression).getRight(), context);
      return new AndNode(leftChild, rightChild);
    } else {
      throw new UnSupportedDataTypeException(
          "Unsupported QueryFilterType when construct OperatorNode: " + expression.getType());
    }
  }

}
