server/src/main/java/org/apache/iotdb/db/query/executor/UDTFQueryExecutor.java

/*
 * 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.
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package org.apache.iotdb.db.query.executor;

import org.apache.iotdb.db.exception.StorageEngineException;
import org.apache.iotdb.db.exception.query.QueryProcessException;
import org.apache.iotdb.db.qp.physical.crud.UDTFPlan;
import org.apache.iotdb.db.query.context.QueryContext;
import org.apache.iotdb.db.query.dataset.UDTFAlignByTimeDataSet;
import org.apache.iotdb.db.query.dataset.UDTFNonAlignDataSet;
import org.apache.iotdb.db.query.reader.series.IReaderByTimestamp;
import org.apache.iotdb.db.query.reader.series.ManagedSeriesReader;
import org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet;
import org.apache.iotdb.tsfile.read.query.timegenerator.TimeGenerator;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import static org.apache.iotdb.tsfile.read.query.executor.ExecutorWithTimeGenerator.markFilterdPaths;

public class UDTFQueryExecutor extends RawDataQueryExecutor {

  protected final UDTFPlan udtfPlan;

  public UDTFQueryExecutor(UDTFPlan udtfPlan) {
    super(udtfPlan);
    this.udtfPlan = udtfPlan;
  }

  public QueryDataSet executeWithoutValueFilterAlignByTime(QueryContext context)
      throws StorageEngineException, QueryProcessException, IOException, InterruptedException {
    List<ManagedSeriesReader> readersOfSelectedSeries = initManagedSeriesReader(context);
    return new UDTFAlignByTimeDataSet(
        context,
        udtfPlan,
        udtfPlan.getDeduplicatedPaths(),
        udtfPlan.getDeduplicatedDataTypes(),
        readersOfSelectedSeries);
  }

  public QueryDataSet executeWithValueFilterAlignByTime(QueryContext context)
      throws StorageEngineException, QueryProcessException, IOException {
    TimeGenerator timestampGenerator = getTimeGenerator(context, udtfPlan);
    List<Boolean> cached =
        markFilterdPaths(
            udtfPlan.getExpression(),
            new ArrayList<>(udtfPlan.getDeduplicatedPaths()),
            timestampGenerator.hasOrNode());
    List<IReaderByTimestamp> readersOfSelectedSeries =
        initSeriesReaderByTimestamp(context, udtfPlan, cached, timestampGenerator.getTimeFilter());
    return new UDTFAlignByTimeDataSet(
        context,
        udtfPlan,
        udtfPlan.getDeduplicatedPaths(),
        udtfPlan.getDeduplicatedDataTypes(),
        timestampGenerator,
        readersOfSelectedSeries,
        cached);
  }

  public QueryDataSet executeWithoutValueFilterNonAlign(QueryContext context)
      throws QueryProcessException, StorageEngineException, IOException, InterruptedException {
    List<ManagedSeriesReader> readersOfSelectedSeries = initManagedSeriesReader(context);
    return new UDTFNonAlignDataSet(
        context,
        udtfPlan,
        udtfPlan.getDeduplicatedPaths(),
        udtfPlan.getDeduplicatedDataTypes(),
        readersOfSelectedSeries);
  }

  public QueryDataSet executeWithValueFilterNonAlign(QueryContext context)
      throws QueryProcessException, StorageEngineException, IOException {
    TimeGenerator timestampGenerator = getTimeGenerator(context, udtfPlan);
    List<Boolean> cached =
        markFilterdPaths(
            udtfPlan.getExpression(),
            new ArrayList<>(udtfPlan.getDeduplicatedPaths()),
            timestampGenerator.hasOrNode());
    List<IReaderByTimestamp> readersOfSelectedSeries =
        initSeriesReaderByTimestamp(context, udtfPlan, cached, timestampGenerator.getTimeFilter());
    return new UDTFNonAlignDataSet(
        context,
        udtfPlan,
        udtfPlan.getDeduplicatedPaths(),
        udtfPlan.getDeduplicatedDataTypes(),
        timestampGenerator,
        readersOfSelectedSeries,
        cached);
  }
}