| /* |
| * 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.iceberg; |
| |
| /** |
| * Iceberg internally tracked field level metrics, used by Parquet and ORC writers only. |
| * |
| * <p>Parquet/ORC keeps track of most metrics in file statistics, and only NaN counter is actually |
| * tracked by writers. This wrapper ensures that metrics not being updated by those writers will not |
| * be incorrectly used, by throwing exceptions when they are accessed. |
| */ |
| public class FloatFieldMetrics extends FieldMetrics<Float> { |
| |
| private FloatFieldMetrics( |
| int id, long valueCount, long nanValueCount, Float lowerBound, Float upperBound) { |
| super(id, valueCount, 0L, nanValueCount, lowerBound, upperBound); |
| } |
| |
| public Builder builderFor(int id) { |
| return new Builder(id); |
| } |
| |
| public static class Builder { |
| private final int id; |
| private long valueCount = 0; |
| private long nanValueCount = 0; |
| private float lowerBound = Float.POSITIVE_INFINITY; |
| private float upperBound = Float.NEGATIVE_INFINITY; |
| |
| public Builder(int id) { |
| this.id = id; |
| } |
| |
| public void addValue(float value) { |
| this.valueCount++; |
| if (Float.isNaN(value)) { |
| this.nanValueCount++; |
| } else { |
| if (Float.compare(value, lowerBound) < 0) { |
| this.lowerBound = value; |
| } |
| if (Float.compare(value, upperBound) > 0) { |
| this.upperBound = value; |
| } |
| } |
| } |
| |
| public FloatFieldMetrics build() { |
| boolean hasBound = valueCount - nanValueCount > 0; |
| return new FloatFieldMetrics( |
| id, |
| valueCount, |
| nanValueCount, |
| hasBound ? lowerBound : null, |
| hasBound ? upperBound : null); |
| } |
| } |
| } |