| /* |
| * 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.drill.metastore.metadata; |
| |
| import org.apache.drill.common.expression.SchemaPath; |
| import org.apache.drill.metastore.components.tables.TableMetadataUnit; |
| import org.apache.drill.metastore.statistics.ColumnStatistics; |
| import org.apache.drill.metastore.statistics.StatisticsHolder; |
| import org.apache.hadoop.fs.Path; |
| |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.StringJoiner; |
| import java.util.stream.Collectors; |
| |
| /** |
| * Base implementation of {@link TableMetadata} interface. |
| */ |
| public class BaseTableMetadata extends BaseMetadata implements TableMetadata { |
| |
| private final Path location; |
| private final Map<String, String> partitionKeys; |
| private final List<SchemaPath> interestingColumns; |
| |
| private BaseTableMetadata(BaseTableMetadataBuilder builder) { |
| super(builder); |
| this.location = builder.location; |
| this.partitionKeys = builder.partitionKeys; |
| this.interestingColumns = builder.interestingColumns; |
| } |
| |
| public boolean isPartitionColumn(String fieldName) { |
| return partitionKeys.containsKey(fieldName); |
| } |
| |
| boolean isPartitioned() { |
| return !partitionKeys.isEmpty(); |
| } |
| |
| @Override |
| public Path getLocation() { |
| return location; |
| } |
| |
| @Override |
| public List<SchemaPath> getInterestingColumns() { |
| return interestingColumns; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| if (!super.equals(o)) { |
| return false; |
| } |
| BaseTableMetadata that = (BaseTableMetadata) o; |
| return Objects.equals(location, that.location) |
| && Objects.equals(partitionKeys, that.partitionKeys) |
| && Objects.equals(interestingColumns, that.interestingColumns); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(super.hashCode(), location, partitionKeys, interestingColumns); |
| } |
| |
| @Override |
| public String toString() { |
| return new StringJoiner(",\n", BaseTableMetadata.class.getSimpleName() + "[\n", "]") |
| .add("location=" + location) |
| .add("partitionKeys=" + partitionKeys) |
| .add("interestingColumns=" + interestingColumns) |
| .add("tableInfo=" + tableInfo) |
| .add("metadataInfo=" + metadataInfo) |
| .add("schema=" + schema) |
| .add("columnsStatistics=" + columnsStatistics) |
| .add("metadataStatistics=" + metadataStatistics) |
| .add("lastModifiedTime=" + lastModifiedTime) |
| .toString(); |
| } |
| |
| @Override |
| public BaseTableMetadata cloneWithStats(Map<SchemaPath, ColumnStatistics<?>> columnStatistics, List<StatisticsHolder<?>> tableStatistics) { |
| Map<String, StatisticsHolder<?>> mergedTableStatistics = new HashMap<>(this.metadataStatistics); |
| |
| // overrides statistics value for the case when new statistics is exact or existing one was estimated |
| tableStatistics.stream() |
| .filter(statisticsHolder -> statisticsHolder.getStatisticsKind().isExact() |
| || !this.metadataStatistics.containsKey(statisticsHolder.getStatisticsKind().getName()) |
| || !this.metadataStatistics.get(statisticsHolder.getStatisticsKind().getName()).getStatisticsKind().isExact()) |
| .forEach(statisticsHolder -> mergedTableStatistics.put(statisticsHolder.getStatisticsKind().getName(), statisticsHolder)); |
| |
| Map<SchemaPath, ColumnStatistics<?>> newColumnsStatistics = new HashMap<>(this.columnsStatistics); |
| this.columnsStatistics.forEach( |
| (columnName, value) -> { |
| ColumnStatistics<?> sourceStatistics = columnStatistics.get(columnName); |
| if (sourceStatistics != null) { |
| newColumnsStatistics.put(columnName, value.genericClone(sourceStatistics)); |
| } |
| }); |
| |
| return BaseTableMetadata.builder() |
| .tableInfo(tableInfo) |
| .metadataInfo(metadataInfo) |
| .location(location) |
| .schema(schema) |
| .columnsStatistics(newColumnsStatistics) |
| .metadataStatistics(mergedTableStatistics.values()) |
| .lastModifiedTime(lastModifiedTime) |
| .partitionKeys(partitionKeys) |
| .interestingColumns(interestingColumns) |
| .build(); |
| } |
| |
| @Override |
| protected void toMetadataUnitBuilder(TableMetadataUnit.Builder builder) { |
| if (location != null) { |
| builder.location(location.toUri().getPath()); |
| } |
| builder.partitionKeys(partitionKeys); |
| if (interestingColumns != null) { |
| builder.interestingColumns(interestingColumns.stream() |
| .map(SchemaPath::toString) |
| .collect(Collectors.toList())); |
| } |
| } |
| |
| @Override |
| public BaseTableMetadataBuilder toBuilder() { |
| return builder() |
| .tableInfo(tableInfo) |
| .metadataInfo(metadataInfo) |
| .location(location) |
| .schema(schema) |
| .columnsStatistics(columnsStatistics) |
| .metadataStatistics(metadataStatistics.values()) |
| .lastModifiedTime(lastModifiedTime) |
| .partitionKeys(partitionKeys) |
| .interestingColumns(interestingColumns); |
| } |
| |
| public static BaseTableMetadataBuilder builder() { |
| return new BaseTableMetadataBuilder(); |
| } |
| |
| public static class BaseTableMetadataBuilder extends BaseMetadataBuilder<BaseTableMetadataBuilder> { |
| private Path location; |
| private Map<String, String> partitionKeys; |
| private List<SchemaPath> interestingColumns; |
| |
| public BaseTableMetadataBuilder location(Path location) { |
| this.location = location; |
| return self(); |
| } |
| |
| public BaseTableMetadataBuilder partitionKeys(Map<String, String> partitionKeys) { |
| this.partitionKeys = partitionKeys; |
| return self(); |
| } |
| |
| public BaseTableMetadataBuilder interestingColumns(List<SchemaPath> interestingColumns) { |
| this.interestingColumns = interestingColumns; |
| return self(); |
| } |
| |
| @Override |
| protected void checkRequiredValues() { |
| super.checkRequiredValues(); |
| Objects.requireNonNull(partitionKeys, "partitionKeys were not set"); |
| } |
| |
| @Override |
| public BaseTableMetadata build() { |
| checkRequiredValues(); |
| return new BaseTableMetadata(this); |
| } |
| |
| @Override |
| protected BaseTableMetadataBuilder self() { |
| return this; |
| } |
| |
| @Override |
| protected BaseTableMetadataBuilder metadataUnitInternal(TableMetadataUnit unit) { |
| if (unit.location() != null) { |
| location(new Path(unit.location())); |
| } |
| partitionKeys(unit.partitionKeys()); |
| if (unit.interestingColumns() != null) { |
| interestingColumns(unit.interestingColumns().stream() |
| .map(SchemaPath::parseFromString) |
| .collect(Collectors.toList())); |
| } |
| return self(); |
| } |
| } |
| } |