nastra commented on code in PR #13933: URL: https://github.com/apache/iceberg/pull/13933#discussion_r2368788416
########## core/src/main/java/org/apache/iceberg/stats/BaseContentStats.java: ########## @@ -0,0 +1,182 @@ +/* + * 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.stats; + +import java.io.Serializable; +import java.util.List; +import java.util.Objects; +import java.util.Set; +import java.util.StringJoiner; +import java.util.stream.Collectors; +import org.apache.iceberg.StructLike; +import org.apache.iceberg.data.GenericRecord; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.types.Type; +import org.apache.iceberg.types.Types; + +public class BaseContentStats implements ContentStats, StructLike, Serializable { + + private final List<FieldStats> fieldStats; + + public BaseContentStats(Types.StructType projection) { + this.fieldStats = Lists.newArrayListWithCapacity(projection.fields().size()); + for (int i = 0; i < projection.fields().size(); i++) { + Types.NestedField field = projection.fields().get(i); + Preconditions.checkArgument( + field.type().isStructType(), "ColumnStats must contain structs: %s", field.type()); + Types.StructType structType = field.type().asStructType(); + Type type = + null != structType.field("lower_bound") + ? structType.field("lower_bound").type() + : null != structType.field("upper_bound") + ? structType.field("upper_bound").type() + : null; + fieldStats.add( + BaseFieldStats.builder() + .fieldId(StatsUtil.fieldIdForStatsField(field.fieldId())) + .type(type) + .build()); + } + } + + private BaseContentStats(List<FieldStats> fieldStats) { + this.fieldStats = Lists.newArrayList(fieldStats); + } + + @Override + public List<FieldStats> fieldStats() { + return fieldStats; + } + + @Override + public int size() { + return fieldStats.size(); + } + + @Override + public <T> T get(int pos, Class<T> javaClass) { + if (pos > fieldStats().size() - 1) { + return null; + } + + return javaClass.cast(fieldStats.get(pos)); + } + + @Override + public <T> void set(int pos, T value) { + if (value instanceof GenericRecord) { + GenericRecord record = (GenericRecord) value; + BaseFieldStats stat = (BaseFieldStats) fieldStats.get(pos); + BaseFieldStats.Builder builder = BaseFieldStats.buildFrom(stat); + Type type = stat.type(); + if (null != record.getField("column_size")) { + builder.columnSize((Long) record.getField("column_size")); + } + if (null != record.getField("value_count")) { + builder.valueCount((Long) record.getField("value_count")); + } + if (null != record.getField("nan_value_count")) { + builder.nanValueCount((Long) record.getField("nan_value_count")); + } + if (null != record.getField("null_value_count")) { + builder.nullValueCount((Long) record.getField("null_value_count")); + } + if (null != record.getField("lower_bound")) { + Object lowerBound = record.getField("lower_bound"); + if (null != type) { + builder.lowerBound(type.typeId().javaClass().cast(lowerBound)); + } + } + if (null != record.getField("upper_bound")) { + Object upperBound = record.getField("upper_bound"); + if (null != type) { + builder.upperBound(type.typeId().javaClass().cast(upperBound)); + } + } + + BaseFieldStats newStat = builder.build(); + fieldStats.set(pos, newStat); + } else { + fieldStats.set(pos, (FieldStats) value); + } + } + + @Override + public String toString() { + return new StringJoiner(", ", BaseContentStats.class.getSimpleName() + "[", "]") Review Comment: no reason, I've updated the code to use it -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org
