| /* |
| * 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.fasterxml.jackson.databind.ObjectMapper; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Lists; |
| import org.apache.druid.query.aggregation.LongSumAggregatorFactory; |
| import org.apache.druid.query.dimension.DefaultDimensionSpec; |
| import org.apache.druid.query.groupby.GroupByQuery; |
| import org.apache.druid.segment.TestHelper; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| |
| public class DataSourceTest |
| { |
| private static final ObjectMapper JSON_MAPPER = TestHelper.makeJsonMapper(); |
| |
| @Test |
| public void testSerialization() throws IOException |
| { |
| DataSource dataSource = new TableDataSource("somedatasource"); |
| String json = JSON_MAPPER.writeValueAsString(dataSource); |
| DataSource serdeDataSource = JSON_MAPPER.readValue(json, DataSource.class); |
| Assert.assertEquals(dataSource, serdeDataSource); |
| } |
| |
| @Test |
| public void testLegacyDataSource() throws IOException |
| { |
| DataSource dataSource = JSON_MAPPER.readValue("\"somedatasource\"", DataSource.class); |
| Assert.assertEquals(new TableDataSource("somedatasource"), dataSource); |
| } |
| |
| @Test |
| public void testTableDataSource() throws IOException |
| { |
| DataSource dataSource = JSON_MAPPER.readValue( |
| "{\"type\":\"table\", \"name\":\"somedatasource\"}", |
| DataSource.class |
| ); |
| Assert.assertEquals(new TableDataSource("somedatasource"), dataSource); |
| } |
| |
| @Test |
| public void testQueryDataSource() throws IOException |
| { |
| GroupByQuery query = GroupByQuery |
| .builder() |
| .setDataSource(QueryRunnerTestHelper.DATA_SOURCE) |
| .setQuerySegmentSpec(QueryRunnerTestHelper.FIRST_TO_THIRD) |
| .setDimensions(new DefaultDimensionSpec("quality", "alias")) |
| .setAggregatorSpecs(QueryRunnerTestHelper.ROWS_COUNT, new LongSumAggregatorFactory("idx", "index")) |
| .setGranularity(QueryRunnerTestHelper.DAY_GRAN) |
| .build(); |
| |
| String dataSourceJSON = "{\"type\":\"query\", \"query\":" + JSON_MAPPER.writeValueAsString(query) + "}"; |
| |
| DataSource dataSource = JSON_MAPPER.readValue(dataSourceJSON, DataSource.class); |
| Assert.assertEquals(new QueryDataSource(query), dataSource); |
| } |
| |
| @Test |
| public void testUnionDataSource() throws Exception |
| { |
| DataSource dataSource = JSON_MAPPER.readValue( |
| "{\"type\":\"union\", \"dataSources\":[\"ds1\", \"ds2\"]}", |
| DataSource.class |
| ); |
| Assert.assertTrue(dataSource instanceof UnionDataSource); |
| Assert.assertEquals( |
| Lists.newArrayList(new TableDataSource("ds1"), new TableDataSource("ds2")), |
| Lists.newArrayList(((UnionDataSource) dataSource).getDataSources()) |
| ); |
| Assert.assertEquals( |
| ImmutableSet.of("ds1", "ds2"), |
| dataSource.getTableNames() |
| ); |
| |
| final DataSource serde = JSON_MAPPER.readValue(JSON_MAPPER.writeValueAsString(dataSource), DataSource.class); |
| Assert.assertEquals(dataSource, serde); |
| } |
| |
| } |