| /* |
| * 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.kudu; |
| |
| import java.util.List; |
| |
| import org.apache.calcite.rel.type.RelDataType; |
| import org.apache.calcite.rel.type.RelDataTypeFactory; |
| import org.apache.calcite.sql.type.SqlTypeName; |
| import org.apache.drill.exec.planner.logical.DynamicDrillTable; |
| import org.apache.kudu.ColumnSchema; |
| import org.apache.kudu.Schema; |
| import org.apache.kudu.Type; |
| |
| import com.google.common.collect.Lists; |
| |
| public class DrillKuduTable extends DynamicDrillTable { |
| |
| private final Schema schema; |
| |
| public DrillKuduTable(String storageEngineName, KuduStoragePlugin plugin, Schema schema, KuduScanSpec scanSpec) { |
| super(plugin, storageEngineName, scanSpec); |
| this.schema = schema; |
| } |
| |
| @Override |
| public RelDataType getRowType(RelDataTypeFactory typeFactory) { |
| |
| List<String> names = Lists.newArrayList(); |
| List<RelDataType> types = Lists.newArrayList(); |
| for (ColumnSchema column : schema.getColumns()) { |
| names.add(column.getName()); |
| RelDataType type = getSqlTypeFromKuduType(typeFactory, column.getType()); |
| type = typeFactory.createTypeWithNullability(type, column.isNullable()); |
| types.add(type); |
| } |
| |
| return typeFactory.createStructType(types, names); |
| } |
| |
| private RelDataType getSqlTypeFromKuduType(RelDataTypeFactory typeFactory, Type type) { |
| switch (type) { |
| case BOOL: |
| return typeFactory.createSqlType(SqlTypeName.BOOLEAN); |
| case DOUBLE: |
| return typeFactory.createSqlType(SqlTypeName.DOUBLE); |
| case FLOAT: |
| return typeFactory.createSqlType(SqlTypeName.FLOAT); |
| case INT16: |
| case INT32: |
| case INT64: |
| case INT8: |
| return typeFactory.createSqlType(SqlTypeName.INTEGER); |
| case STRING: |
| return typeFactory.createSqlType(SqlTypeName.VARCHAR); |
| case UNIXTIME_MICROS: |
| return typeFactory.createSqlType(SqlTypeName.TIMESTAMP); |
| case BINARY: |
| return typeFactory.createSqlType(SqlTypeName.VARBINARY, Integer.MAX_VALUE); |
| default: |
| throw new UnsupportedOperationException("Unsupported type."); |
| } |
| } |
| } |