| /* |
| * 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.filter.operator; |
| |
| import org.apache.iotdb.tsfile.read.common.TimeRange; |
| import org.apache.iotdb.tsfile.read.filter.basic.Filter; |
| import org.apache.iotdb.tsfile.read.filter.basic.OperatorType; |
| import org.apache.iotdb.tsfile.read.filter.basic.TimeFilter; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Objects; |
| |
| public class GroupByFilter extends TimeFilter { |
| |
| // [startTime, endTime] |
| protected long startTime; |
| protected long endTime; |
| |
| protected long interval; |
| protected long slidingStep; |
| |
| public GroupByFilter(long startTime, long endTime, long interval, long slidingStep) { |
| this.startTime = startTime; |
| this.endTime = endTime; |
| this.interval = interval; |
| this.slidingStep = slidingStep; |
| } |
| |
| protected GroupByFilter(long startTime, long endTime) { |
| this.startTime = startTime; |
| this.endTime = endTime; |
| } |
| |
| public GroupByFilter(ByteBuffer buffer) { |
| this.startTime = ReadWriteIOUtils.readLong(buffer); |
| this.endTime = ReadWriteIOUtils.readLong(buffer); |
| this.interval = ReadWriteIOUtils.readLong(buffer); |
| this.slidingStep = ReadWriteIOUtils.readLong(buffer); |
| } |
| |
| @Override |
| public boolean timeSatisfy(long time) { |
| if (time < startTime || time >= endTime) { |
| return false; |
| } else { |
| return (time - startTime) % slidingStep < interval; |
| } |
| } |
| |
| @Override |
| public boolean satisfyStartEndTime(long startTime, long endTime) { |
| if (endTime < this.startTime || startTime >= this.endTime) { |
| return false; |
| } else if (startTime <= this.startTime) { |
| return true; |
| } else { |
| long minTime = startTime - this.startTime; |
| long count = minTime / slidingStep; |
| if (minTime <= interval + count * slidingStep) { |
| return true; |
| } else { |
| if (this.endTime <= (count + 1) * slidingStep + this.startTime) { |
| return false; |
| } else { |
| return endTime >= (count + 1) * slidingStep + this.startTime; |
| } |
| } |
| } |
| } |
| |
| @Override |
| public boolean containStartEndTime(long startTime, long endTime) { |
| if (startTime >= this.startTime && endTime <= this.endTime) { |
| long minTime = startTime - this.startTime; |
| long maxTime = endTime - this.startTime; |
| long count = minTime / slidingStep; |
| return minTime <= interval + count * slidingStep && maxTime <= interval + count * slidingStep; |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| return String.format( |
| "GroupByFilter{[%d, %d], %d, %d}", startTime, endTime, interval, slidingStep); |
| } |
| |
| @Override |
| public List<TimeRange> getTimeRanges() { |
| return startTime >= endTime |
| ? Collections.emptyList() |
| : Collections.singletonList(new TimeRange(startTime, endTime - 1)); |
| } |
| |
| @Override |
| public Filter reverse() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public OperatorType getOperatorType() { |
| return OperatorType.GROUP_BY_TIME; |
| } |
| |
| @Override |
| public void serialize(DataOutputStream outputStream) throws IOException { |
| super.serialize(outputStream); |
| ReadWriteIOUtils.write(startTime, outputStream); |
| ReadWriteIOUtils.write(endTime, outputStream); |
| ReadWriteIOUtils.write(interval, outputStream); |
| ReadWriteIOUtils.write(slidingStep, outputStream); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| GroupByFilter that = (GroupByFilter) o; |
| return interval == that.interval |
| && slidingStep == that.slidingStep |
| && startTime == that.startTime |
| && endTime == that.endTime; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(interval, slidingStep, startTime, endTime); |
| } |
| } |