/*
 * 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.tsfile.read.expression.impl;

import java.io.Serializable;

import org.apache.iotdb.tsfile.read.common.Path;
import org.apache.iotdb.tsfile.read.expression.ExpressionType;
import org.apache.iotdb.tsfile.read.expression.IExpression;
import org.apache.iotdb.tsfile.read.expression.IUnaryExpression;
import org.apache.iotdb.tsfile.read.filter.basic.Filter;

public class SingleSeriesExpression implements IUnaryExpression, Serializable {

  private static final long serialVersionUID = 7131207370394865228L;
  private Path seriesPath;
  private Filter filter;

  public SingleSeriesExpression(Path seriesDescriptor, Filter filter) {
    this.seriesPath = seriesDescriptor;
    this.filter = filter;
  }

  @Override
  public ExpressionType getType() {
    return ExpressionType.SERIES;
  }

  @Override
  public IExpression clone() {
    return new SingleSeriesExpression(seriesPath.clone(), filter.copy());
  }

  @Override
  public Filter getFilter() {
    return filter;
  }

  @Override
  public void setFilter(Filter filter) {
    this.filter = filter;
  }

  @Override
  public String toString() {
    return "[" + seriesPath + ":" + filter + "]";
  }

  public Path getSeriesPath() {
    return this.seriesPath;
  }
}
