| /* |
| * 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.ignite.internal.processors.query.stat; |
| |
| import java.math.BigDecimal; |
| import java.util.Arrays; |
| import java.util.Objects; |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| |
| /** |
| * Values statistic in particular column. |
| */ |
| public class ColumnStatistics { |
| /** Minimum value in column or {@code null} if there are no non null values in the column. */ |
| private final BigDecimal min; |
| |
| /** Maximum value in column or {@code null} if there are no non null values in the column. */ |
| private final BigDecimal max; |
| |
| /** Number of null values in column. */ |
| private final long nulls; |
| |
| /** Number of distinct values in column. */ |
| private final long distinct; |
| |
| /** Total number of values in column. */ |
| private final long total; |
| |
| /** Average size in bytes, for variable size only. */ |
| private final int size; |
| |
| /** Raw data. */ |
| private final byte[] raw; |
| |
| /** Version. */ |
| private final long ver; |
| |
| /** Created at time, milliseconds. */ |
| private final long createdAt; |
| |
| /** |
| * Constructor. |
| * |
| * @param min Min value in column or {@code null}. |
| * @param max Max value in column or {@code null}. |
| * @param nulls Number of null values in column. |
| * @param distinct Number of distinct values in column. |
| * @param total Total number of values in column. |
| * @param size Average size in bytes, for variable size only. |
| * @param raw Raw data to aggregate statistics. |
| * @param ver Statistics version. |
| * @param createdAt Created at time, milliseconds. |
| */ |
| public ColumnStatistics( |
| BigDecimal min, |
| BigDecimal max, |
| long nulls, |
| long distinct, |
| long total, |
| int size, |
| byte[] raw, |
| long ver, |
| long createdAt |
| ) { |
| this.min = min; |
| this.max = max; |
| this.nulls = nulls; |
| this.distinct = distinct; |
| this.total = total; |
| this.size = size; |
| this.raw = raw; |
| this.ver = ver; |
| this.createdAt = createdAt; |
| } |
| |
| /** |
| * @return Min value in column. |
| */ |
| public BigDecimal min() { |
| return min; |
| } |
| |
| /** |
| * @return Max value in column. |
| */ |
| public BigDecimal max() { |
| return max; |
| } |
| |
| /** |
| * @return Number of null values in column. |
| */ |
| public long nulls() { |
| return nulls; |
| } |
| |
| /** |
| * @return Number of null values in column. |
| */ |
| public long distinct() { |
| return distinct; |
| } |
| |
| /** |
| * @return Total number of values in column. |
| */ |
| public long total() { |
| return total; |
| } |
| |
| /** |
| * @return Average size in bytes, for variable size only. |
| */ |
| public int size() { |
| return size; |
| } |
| |
| /** |
| * @return Raw value needed to aggregate statistics. |
| */ |
| public byte[] raw() { |
| return raw; |
| } |
| |
| /** |
| * @return Statistic's version. |
| */ |
| public long version() { |
| return ver; |
| } |
| |
| /** |
| * @return Created at time, milliseconds |
| */ |
| public long createdAt() { |
| return createdAt; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| ColumnStatistics that = (ColumnStatistics)o; |
| return nulls == that.nulls && |
| distinct == that.distinct && |
| total == that.total && |
| size == that.size && |
| ver == that.ver && |
| createdAt == that.createdAt && |
| (min == null ? that.min == null : min.compareTo(that.min) == 0) && |
| (max == null ? that.max == null : max.compareTo(that.max) == 0) && |
| Arrays.equals(raw, that.raw); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int hashCode() { |
| int result = Objects.hash(min, max, nulls, distinct, total, size, ver, createdAt); |
| result = 31 * result + Arrays.hashCode(raw); |
| return result; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(ColumnStatistics.class, this); |
| } |
| } |