| /* |
| * 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.physical.rowSet; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.drill.common.expression.SchemaPath; |
| import org.apache.drill.exec.memory.BufferAllocator; |
| import org.apache.drill.exec.record.metadata.TupleMetadata; |
| |
| public class RowSetTestUtils { |
| |
| private RowSetTestUtils() { } |
| |
| public static List<SchemaPath> projectList(String... names) { |
| List<SchemaPath> selected = new ArrayList<>(); |
| for (String name : names) { |
| if (name.equals(SchemaPath.DYNAMIC_STAR) || name.equals("*")) { |
| selected.add(SchemaPath.STAR_COLUMN); |
| } else { |
| selected.add(SchemaPath.parseFromString(name)); |
| } |
| } |
| return selected; |
| } |
| |
| public static List<SchemaPath> projectList(List<String> names) { |
| String nameArray[] = new String[names.size()]; |
| names.toArray(nameArray); |
| return projectList(nameArray); |
| } |
| |
| public static List<SchemaPath> projectCols(SchemaPath... cols) { |
| List<SchemaPath> selected = new ArrayList<>(); |
| for (SchemaPath col: cols) { |
| selected.add(col); |
| } |
| return selected; |
| } |
| |
| public static List<SchemaPath> projectAll() { |
| return Arrays.asList( |
| new SchemaPath[] {SchemaPath.STAR_COLUMN}); |
| } |
| |
| public static List<SchemaPath> projectNone() { |
| return Collections.emptyList(); |
| } |
| |
| @SafeVarargs |
| public static List<SchemaPath> concat(List<SchemaPath>... parts) { |
| List<SchemaPath> selected = new ArrayList<>(); |
| for (List<SchemaPath> part : parts) { |
| selected.addAll(part); |
| } |
| return selected; |
| } |
| |
| public static RowSetWriter makeWriter(BufferAllocator allocator, TupleMetadata outputSchema) { |
| return makeWriter(allocator, outputSchema, 256); |
| } |
| |
| public static RowSetWriter makeWriter(BufferAllocator allocator, TupleMetadata outputSchema, int size) { |
| DirectRowSet rowSet = DirectRowSet.fromSchema(allocator, outputSchema); |
| return rowSet.writer(size); |
| } |
| } |