| /* |
| * 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.file.metadata.statistics.Statistics; |
| import org.apache.iotdb.tsfile.read.filter.basic.Filter; |
| import org.apache.iotdb.tsfile.read.filter.factory.FilterSerializeId; |
| import org.apache.iotdb.tsfile.read.filter.factory.FilterType; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * in clause. |
| * |
| * @param <T> comparable data type |
| */ |
| public class In<T extends Comparable<T>> implements Filter { |
| |
| private static final long serialVersionUID = 8572705136773595399L; |
| |
| protected Set<T> values; |
| |
| protected boolean not; |
| |
| protected FilterType filterType; |
| |
| public In() {} |
| |
| public In(Set<T> values, FilterType filterType, boolean not) { |
| this.values = values; |
| this.filterType = filterType; |
| this.not = not; |
| } |
| |
| @Override |
| public boolean satisfy(Statistics statistics) { |
| return true; |
| } |
| |
| @Override |
| public boolean satisfy(long time, Object value) { |
| Object v = filterType == FilterType.TIME_FILTER ? time : value; |
| return this.values.contains(v) != not; |
| } |
| |
| @Override |
| public boolean satisfyStartEndTime(long startTime, long endTime) { |
| return true; |
| } |
| |
| @Override |
| public boolean containStartEndTime(long startTime, long endTime) { |
| return true; |
| } |
| |
| @Override |
| public Filter copy() { |
| return new In(new HashSet(values), filterType, not); |
| } |
| |
| @Override |
| public void serialize(DataOutputStream outputStream) { |
| try { |
| outputStream.write(getSerializeId().ordinal()); |
| outputStream.write(filterType.ordinal()); |
| ReadWriteIOUtils.write(not, outputStream); |
| outputStream.write(values.size()); |
| for (T value : values) { |
| ReadWriteIOUtils.writeObject(value, outputStream); |
| } |
| } catch (IOException ignored) { |
| // ignored |
| } |
| } |
| |
| @Override |
| public void deserialize(ByteBuffer buffer) { |
| filterType = FilterType.values()[buffer.get()]; |
| not = ReadWriteIOUtils.readBool(buffer); |
| values = new HashSet<>(); |
| for (int i = 0; i < buffer.get(); i++) { |
| values.add((T) ReadWriteIOUtils.readObject(buffer)); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| List<T> valueList = new ArrayList<>(values); |
| Collections.sort(valueList); |
| return filterType + " < " + "reverse: " + not + ", " + valueList; |
| } |
| |
| @Override |
| public FilterSerializeId getSerializeId() { |
| return FilterSerializeId.IN; |
| } |
| |
| public Set<T> getValues() { |
| return values; |
| } |
| } |