| /* |
| * 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.cassandra.io.sstable; |
| |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| |
| import org.apache.cassandra.utils.StreamingHistogram; |
| |
| /** |
| * ColumnStats holds information about the columns for one row inside sstable |
| */ |
| public class ColumnStats |
| { |
| /** how many columns are there in the row */ |
| public final int columnCount; |
| |
| /** the largest (client-supplied) timestamp in the row */ |
| public final long minTimestamp; |
| public final long maxTimestamp; |
| public final int maxLocalDeletionTime; |
| /** histogram of tombstone drop time */ |
| public final StreamingHistogram tombstoneHistogram; |
| |
| /** max and min column names according to comparator */ |
| public final List<ByteBuffer> minColumnNames; |
| public final List<ByteBuffer> maxColumnNames; |
| |
| public final boolean hasLegacyCounterShards; |
| |
| public ColumnStats(int columnCount, |
| long minTimestamp, |
| long maxTimestamp, |
| int maxLocalDeletionTime, |
| StreamingHistogram tombstoneHistogram, |
| List<ByteBuffer> minColumnNames, |
| List<ByteBuffer> maxColumnNames, |
| boolean hasLegacyCounterShards) |
| { |
| this.minTimestamp = minTimestamp; |
| this.maxTimestamp = maxTimestamp; |
| this.maxLocalDeletionTime = maxLocalDeletionTime; |
| this.columnCount = columnCount; |
| this.tombstoneHistogram = tombstoneHistogram; |
| this.minColumnNames = minColumnNames; |
| this.maxColumnNames = maxColumnNames; |
| this.hasLegacyCounterShards = hasLegacyCounterShards; |
| } |
| |
| // We use explicit classes for ints and longs instead of generics to avoid boxing and unboxing (See CASSANDRA-8109) |
| public static class MinLongTracker |
| { |
| private final long defaultValue; |
| private boolean isSet = false; |
| private long value; |
| |
| public MinLongTracker(long defaultValue) |
| { |
| this.defaultValue = defaultValue; |
| } |
| |
| public void update(long value) |
| { |
| if (!isSet) |
| { |
| this.value = value; |
| isSet = true; |
| } |
| else |
| { |
| if (value < this.value) |
| this.value = value; |
| } |
| } |
| |
| public long get() |
| { |
| if (isSet) |
| return value; |
| return defaultValue; |
| } |
| } |
| |
| public static class MaxLongTracker |
| { |
| private final long defaultValue; |
| private boolean isSet = false; |
| private long value; |
| |
| public MaxLongTracker(long defaultValue) |
| { |
| this.defaultValue = defaultValue; |
| } |
| |
| public void update(long value) |
| { |
| if (!isSet) |
| { |
| this.value = value; |
| isSet = true; |
| } |
| else |
| { |
| if (value >this.value) |
| this.value = value; |
| } |
| } |
| |
| public long get() |
| { |
| if (isSet) |
| return value; |
| return defaultValue; |
| } |
| } |
| |
| public static class MaxIntTracker |
| { |
| private final int defaultValue; |
| private boolean isSet = false; |
| private int value; |
| |
| public MaxIntTracker(int defaultValue) |
| { |
| this.defaultValue = defaultValue; |
| } |
| |
| public void update(int value) |
| { |
| if (!isSet) |
| { |
| this.value = value; |
| isSet = true; |
| } |
| else |
| { |
| if (value > this.value) |
| this.value = value; |
| } |
| } |
| |
| public int get() |
| { |
| if (isSet) |
| return value; |
| return defaultValue; |
| } |
| } |
| |
| } |