| /* |
| * 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.impl.scan.v3.schema; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| import org.apache.drill.categories.EvfTest; |
| import org.apache.drill.common.exceptions.CustomErrorContext; |
| import org.apache.drill.common.exceptions.EmptyErrorContext; |
| import org.apache.drill.common.expression.SchemaPath; |
| import org.apache.drill.exec.physical.impl.scan.v3.schema.ScanProjectionParser.ProjectionParseResult; |
| import org.apache.drill.exec.physical.resultSet.impl.ProjectionFilter; |
| import org.apache.drill.exec.physical.rowSet.RowSetTestUtils; |
| import org.apache.drill.exec.record.metadata.TupleMetadata; |
| import org.apache.drill.test.BaseTest; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| /** |
| * Test the first step of scan schema resolution: translating from the |
| * projection parser to a dynamic schema ready for resolution. |
| */ |
| @Category(EvfTest.class) |
| public class TestSchemaTrackerProjection extends BaseTest { |
| private static final CustomErrorContext ERROR_CONTEXT = EmptyErrorContext.INSTANCE; |
| |
| private ProjectionSchemaTracker schemaTracker(Collection<SchemaPath> projList) { |
| ProjectionParseResult result = ScanProjectionParser.parse(projList); |
| return new ProjectionSchemaTracker(result, true, EmptyErrorContext.INSTANCE); |
| } |
| |
| @Test |
| public void testEmpty() { |
| ProjectionSchemaTracker tracker = schemaTracker( |
| Collections.emptyList()); |
| assertTrue(tracker.isResolved()); |
| assertEquals(1, tracker.schemaVersion()); |
| assertSame(ScanSchemaTracker.ProjectionType.NONE, tracker.projectionType()); |
| assertTrue(tracker.internalSchema().toSchema().isEmpty()); |
| ProjectionFilter filter = tracker.projectionFilter(ERROR_CONTEXT); |
| assertSame(ProjectionFilter.PROJECT_NONE, filter); |
| } |
| |
| @Test |
| public void testWildcard() { |
| ProjectionSchemaTracker tracker = schemaTracker( |
| RowSetTestUtils.projectAll()); |
| assertFalse(tracker.isResolved()); |
| assertEquals(1, tracker.schemaVersion()); |
| assertSame(ScanSchemaTracker.ProjectionType.ALL, tracker.projectionType()); |
| assertTrue(tracker.internalSchema().toSchema().isEmpty()); |
| ProjectionFilter filter = tracker.projectionFilter(ERROR_CONTEXT); |
| assertSame(ProjectionFilter.PROJECT_ALL, filter); |
| } |
| |
| @Test |
| public void testWildcardAndCols() { |
| ProjectionSchemaTracker tracker = schemaTracker( |
| RowSetTestUtils.projectList("a", SchemaPath.DYNAMIC_STAR, "b")); |
| assertFalse(tracker.isResolved()); |
| assertTrue(0 < tracker.schemaVersion()); |
| assertSame(ScanSchemaTracker.ProjectionType.ALL, tracker.projectionType()); |
| assertNotNull(tracker.columnProjection("a")); |
| assertNotNull(tracker.columnProjection("b")); |
| TupleMetadata schema = tracker.internalSchema().toSchema(); |
| assertEquals(2, schema.size()); |
| assertTrue(schema.metadata(0).isDynamic()); |
| ProjectionFilter filter = tracker.projectionFilter(ERROR_CONTEXT); |
| assertTrue(filter instanceof DynamicSchemaFilter); |
| } |
| |
| @Test |
| public void testExplicit() { |
| ProjectionSchemaTracker tracker = schemaTracker( |
| RowSetTestUtils.projectList("a", "b", "c")); |
| assertSame(ScanSchemaTracker.ProjectionType.SOME, tracker.projectionType()); |
| assertTrue(0 < tracker.schemaVersion()); |
| TupleMetadata schema = tracker.internalSchema().toSchema(); |
| assertEquals(3, schema.size()); |
| assertTrue(schema.metadata(0).isDynamic()); |
| ProjectionFilter filter = tracker.projectionFilter(ERROR_CONTEXT); |
| assertTrue(filter instanceof DynamicSchemaFilter); |
| } |
| |
| @Test |
| public void testExplicitArray() { |
| ProjectionSchemaTracker tracker = schemaTracker( |
| RowSetTestUtils.projectList("a[1]", "a[3]")); |
| assertSame(ScanSchemaTracker.ProjectionType.SOME, tracker.projectionType()); |
| |
| ProjectedColumn projCol = tracker.columnProjection("a"); |
| assertNotNull(projCol); |
| boolean[] indexes = projCol.indexes(); |
| assertNotNull(indexes); |
| assertEquals(4, indexes.length); |
| assertFalse(indexes[0]); |
| assertTrue(indexes[1]); |
| assertFalse(indexes[2]); |
| assertTrue(indexes[3]); |
| } |
| } |