| /* |
| * 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.store.parquet; |
| |
| import com.fasterxml.jackson.annotation.JsonIgnore; |
| import com.fasterxml.jackson.annotation.JsonInclude; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import org.apache.drill.common.expression.LogicalExpression; |
| import org.apache.drill.common.expression.SchemaPath; |
| import org.apache.drill.exec.physical.base.AbstractBase; |
| import org.apache.drill.exec.physical.base.GroupScan; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.physical.base.PhysicalVisitor; |
| import org.apache.drill.exec.physical.base.SubScan; |
| import org.apache.drill.exec.record.metadata.TupleMetadata; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| public abstract class AbstractParquetRowGroupScan extends AbstractBase implements SubScan { |
| |
| protected final List<RowGroupReadEntry> rowGroupReadEntries; |
| protected final List<SchemaPath> columns; |
| protected final ParquetReaderConfig readerConfig; |
| protected final LogicalExpression filter; |
| protected final Path selectionRoot; |
| protected final TupleMetadata schema; |
| |
| protected AbstractParquetRowGroupScan(String userName, |
| List<RowGroupReadEntry> rowGroupReadEntries, |
| List<SchemaPath> columns, |
| ParquetReaderConfig readerConfig, |
| LogicalExpression filter, |
| Path selectionRoot, |
| TupleMetadata schema) { |
| super(userName); |
| this.rowGroupReadEntries = rowGroupReadEntries; |
| this.columns = columns == null ? GroupScan.ALL_COLUMNS : columns; |
| this.readerConfig = readerConfig == null ? ParquetReaderConfig.getDefaultInstance() : readerConfig; |
| this.filter = filter; |
| this.selectionRoot = selectionRoot; |
| this.schema = schema; |
| } |
| |
| @JsonProperty |
| public List<RowGroupReadEntry> getRowGroupReadEntries() { |
| return rowGroupReadEntries; |
| } |
| |
| @JsonProperty |
| public List<SchemaPath> getColumns() { |
| return columns; |
| } |
| |
| @JsonProperty("readerConfig") |
| @JsonInclude(JsonInclude.Include.NON_NULL) |
| // do not serialize reader config if it contains all default values |
| public ParquetReaderConfig getReaderConfigForSerialization() { |
| return ParquetReaderConfig.getDefaultInstance().equals(readerConfig) ? null : readerConfig; |
| } |
| |
| @JsonIgnore |
| public ParquetReaderConfig getReaderConfig() { |
| return readerConfig; |
| } |
| |
| @JsonProperty |
| public LogicalExpression getFilter() { |
| return filter; |
| } |
| |
| @Override |
| public boolean isExecutable() { |
| return false; |
| } |
| |
| @Override |
| public <T, X, E extends Throwable> T accept(PhysicalVisitor<T, X, E> physicalVisitor, X value) throws E { |
| return physicalVisitor.visitSubScan(this, value); |
| } |
| |
| @Override |
| public Iterator<PhysicalOperator> iterator() { |
| return Collections.emptyIterator(); |
| } |
| |
| @JsonProperty |
| public Path getSelectionRoot() { |
| return selectionRoot; |
| } |
| |
| @JsonProperty |
| public TupleMetadata getSchema() { return schema; } |
| |
| public boolean isImplicitColumn(SchemaPath path, String partitionColumnLabel) { |
| return path.toString().matches(partitionColumnLabel + "\\d+"); |
| } |
| |
| public abstract AbstractParquetRowGroupScan copy(List<SchemaPath> columns); |
| @JsonIgnore |
| public abstract Configuration getFsConf(RowGroupReadEntry rowGroupReadEntry) throws IOException; |
| public abstract boolean supportsFileImplicitColumns(); |
| @JsonIgnore |
| public abstract List<String> getPartitionValues(RowGroupReadEntry rowGroupReadEntry); |
| |
| } |