| /* |
| * 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.exec.metastore.analyze; |
| |
| import org.apache.calcite.rel.core.TableScan; |
| import org.apache.drill.common.expression.ExpressionPosition; |
| import org.apache.drill.common.expression.FieldReference; |
| import org.apache.drill.common.expression.FunctionCall; |
| import org.apache.drill.common.expression.SchemaPath; |
| import org.apache.drill.common.logical.data.NamedExpression; |
| import org.apache.drill.exec.metastore.ColumnNamesOptions; |
| import org.apache.drill.exec.planner.logical.DrillTable; |
| import org.apache.drill.exec.planner.physical.PlannerSettings; |
| import org.apache.drill.exec.store.ColumnExplorer; |
| import org.apache.drill.exec.store.dfs.FileSelection; |
| import org.apache.drill.exec.store.dfs.FormatSelection; |
| import org.apache.drill.metastore.components.tables.BasicTablesRequests; |
| import org.apache.drill.metastore.metadata.MetadataType; |
| import org.apache.drill.metastore.metadata.TableInfo; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.function.Supplier; |
| import java.util.stream.Collectors; |
| |
| /** |
| * Implementation of {@link AnalyzeInfoProvider} for file-based tables. |
| */ |
| public abstract class AnalyzeFileInfoProvider implements AnalyzeInfoProvider { |
| |
| @Override |
| public List<SchemaPath> getSegmentColumns(DrillTable table, ColumnNamesOptions columnNamesOptions) throws IOException { |
| FormatSelection selection = (FormatSelection) table.getSelection(); |
| |
| FileSelection fileSelection = selection.getSelection(); |
| if (!fileSelection.isExpandedFully()) { |
| fileSelection = FileMetadataInfoCollector.getExpandedFileSelection(fileSelection); |
| } |
| |
| return ColumnExplorer.getPartitionColumnNames(fileSelection, columnNamesOptions).stream() |
| .map(SchemaPath::getSimplePath) |
| .collect(Collectors.toList()); |
| } |
| |
| @Override |
| public List<SchemaPath> getProjectionFields(DrillTable table, MetadataType metadataLevel, ColumnNamesOptions columnNamesOptions) throws IOException { |
| List<SchemaPath> projectionList = new ArrayList<>(getSegmentColumns(table, columnNamesOptions)); |
| projectionList.add(SchemaPath.getSimplePath(columnNamesOptions.fullyQualifiedName())); |
| projectionList.add(SchemaPath.getSimplePath(columnNamesOptions.lastModifiedTime())); |
| projectionList.add(SchemaPath.getSimplePath(columnNamesOptions.projectMetadataColumn())); |
| return Collections.unmodifiableList(projectionList); |
| } |
| |
| @Override |
| public MetadataInfoCollector getMetadataInfoCollector(BasicTablesRequests basicRequests, TableInfo tableInfo, |
| FormatSelection selection, PlannerSettings settings, Supplier<TableScan> tableScanSupplier, |
| List<SchemaPath> interestingColumns, MetadataType metadataLevel, int segmentColumnsCount) throws IOException { |
| return new FileMetadataInfoCollector(basicRequests, tableInfo, selection, |
| settings, tableScanSupplier, interestingColumns, metadataLevel, segmentColumnsCount); |
| } |
| |
| @Override |
| public SchemaPath getLocationField(ColumnNamesOptions columnNamesOptions) { |
| return SchemaPath.getSimplePath(columnNamesOptions.fullyQualifiedName()); |
| } |
| |
| @Override |
| public NamedExpression getParentLocationExpression(SchemaPath locationField) { |
| return new NamedExpression(new FunctionCall("parentPath", |
| Collections.singletonList(locationField), ExpressionPosition.UNKNOWN), |
| FieldReference.getWithQuotedRef(MetastoreAnalyzeConstants.LOCATION_FIELD)); |
| } |
| } |