| /* |
| * 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.druid.query; |
| |
| import com.google.common.collect.Iterables; |
| import junit.framework.Assert; |
| import org.apache.druid.java.util.common.guava.Sequence; |
| import org.apache.druid.java.util.common.guava.Sequences; |
| import org.apache.druid.query.context.ResponseContext; |
| import org.junit.Test; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| public class UnionQueryRunnerTest |
| { |
| @Test |
| public void testUnionQueryRunner() |
| { |
| AtomicBoolean ds1 = new AtomicBoolean(false); |
| AtomicBoolean ds2 = new AtomicBoolean(false); |
| QueryRunner baseRunner = new QueryRunner() |
| { |
| @Override |
| public Sequence run(QueryPlus queryPlus, ResponseContext responseContext) |
| { |
| // verify that table datasource is passed to baseQueryRunner |
| Assert.assertTrue(queryPlus.getQuery().getDataSource() instanceof TableDataSource); |
| String dsName = Iterables.getOnlyElement(queryPlus.getQuery().getDataSource().getTableNames()); |
| if ("ds1".equals(dsName)) { |
| ds1.compareAndSet(false, true); |
| return Sequences.simple(Arrays.asList(1, 2, 3)); |
| } else if ("ds2".equals(dsName)) { |
| ds2.compareAndSet(false, true); |
| return Sequences.simple(Arrays.asList(4, 5, 6)); |
| } else { |
| throw new AssertionError("Unexpected DataSource"); |
| } |
| } |
| }; |
| UnionQueryRunner runner = new UnionQueryRunner(baseRunner); |
| // Make a dummy query with Union datasource |
| Query q = Druids.newTimeseriesQueryBuilder() |
| .dataSource( |
| new UnionDataSource( |
| Arrays.asList( |
| new TableDataSource("ds1"), |
| new TableDataSource("ds2") |
| ) |
| ) |
| ) |
| .intervals("2014-01-01T00:00:00Z/2015-01-01T00:00:00Z") |
| .aggregators(QueryRunnerTestHelper.COMMON_DOUBLE_AGGREGATORS) |
| .build(); |
| ResponseContext responseContext = ResponseContext.createEmpty(); |
| Sequence<?> result = runner.run(QueryPlus.wrap(q), responseContext); |
| List res = result.toList(); |
| Assert.assertEquals(Arrays.asList(1, 2, 3, 4, 5, 6), res); |
| Assert.assertEquals(true, ds1.get()); |
| Assert.assertEquals(true, ds2.get()); |
| } |
| |
| } |