| /* |
| * 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.fn.impl; |
| |
| import org.apache.drill.exec.ExecConstants; |
| import org.apache.drill.categories.SqlFunctionTest; |
| import org.apache.drill.categories.UnlikelyTest; |
| import org.apache.drill.exec.planner.physical.PlannerSettings; |
| import org.apache.drill.test.ClusterFixture; |
| import org.apache.drill.test.ClusterFixtureBuilder; |
| import org.apache.drill.test.ClusterTest; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| import java.math.BigDecimal; |
| import java.time.LocalDate; |
| import java.time.LocalDateTime; |
| import java.time.LocalTime; |
| |
| @Category({UnlikelyTest.class, SqlFunctionTest.class}) |
| public class TestCastEmptyStrings extends ClusterTest { |
| |
| @BeforeClass |
| public static void setup() throws Exception { |
| ClusterFixtureBuilder builder = ClusterFixture.builder(dirTestWatcher) |
| // enable decimal data type |
| .sessionOption(PlannerSettings.ENABLE_DECIMAL_DATA_TYPE_KEY, true) |
| // Enable the new cast functions (cast empty string "" to null) |
| .systemOption(ExecConstants.CAST_EMPTY_STRING_TO_NULL, true); |
| startCluster(builder); |
| } |
| |
| @Test // see DRILL-1874 |
| public void testCastOptionalVarCharToNumeric() throws Exception { |
| testCastOptionalString("columns[0]", "int", "cp.`emptyStrings.csv`", null, 1, 2); |
| testCastOptionalString("columns[0]", "bigint", "cp.`emptyStrings.csv`", null, 1L, 2L); |
| testCastOptionalString("columns[0]", "float", "cp.`emptyStrings.csv`", null, 1.0f, 2.0f); |
| testCastOptionalString("columns[0]", "double", "cp.`emptyStrings.csv`", null, 1.0, 2.0); |
| } |
| |
| @Test // see DRILL-1874 |
| public void testCastRequiredVarCharToNumeric() throws Exception { |
| testCastEmptyString("int"); |
| testCastEmptyString("bigint"); |
| testCastEmptyString("float"); |
| testCastEmptyString("double"); |
| } |
| |
| @Test // see DRILL-1874 |
| public void testCastOptionalVarCharToDecimal() throws Exception { |
| BigDecimal one = BigDecimal.valueOf(1L); |
| BigDecimal two = BigDecimal.valueOf(2L); |
| testCastOptionalString("columns[0]", "decimal", "cp.`emptyStrings.csv`", null, one, two); |
| testCastOptionalString("columns[0]", "decimal(9)", "cp.`emptyStrings.csv`", null, one, two); |
| testCastOptionalString("columns[0]", "decimal(18)", "cp.`emptyStrings.csv`", null, one, two); |
| testCastOptionalString("columns[0]", "decimal(28)", "cp.`emptyStrings.csv`", null, one, two); |
| testCastOptionalString("columns[0]", "decimal(38)", "cp.`emptyStrings.csv`", null, one, two); |
| } |
| |
| @Test // see DRILL-1874 |
| public void testCastRequiredVarCharToDecimal() throws Exception { |
| testCastEmptyString("decimal"); |
| testCastEmptyString("decimal(18)"); |
| testCastEmptyString("decimal(28)"); |
| testCastEmptyString("decimal(38)"); |
| } |
| |
| @Test |
| public void testCastRequiredVarCharToDateTime() throws Exception { |
| testCastEmptyString("date"); |
| testCastEmptyString("time"); |
| testCastEmptyString("timestamp"); |
| } |
| |
| @Test |
| public void testCastOptionalVarCharToDateTime() throws Exception { |
| testCastOptionalString("dateCol", "date", "cp.`dateWithEmptyStrings.json`", |
| null, null, LocalDate.of(1997, 12, 10)); |
| testCastOptionalString("timeCol", "time", "cp.`dateWithEmptyStrings.json`", |
| null, null, LocalTime.of(7, 21, 39)); |
| testCastOptionalString("timestampCol", "timestamp", "cp.`dateWithEmptyStrings.json`", |
| null, null, LocalDateTime.of(2003, 9, 11, 10, 1, 37)); |
| } |
| |
| @Test |
| public void testCastRequiredVarCharToInterval() throws Exception { |
| testCastEmptyString("interval year"); |
| testCastEmptyString("interval day"); |
| testCastEmptyString("interval month"); |
| } |
| |
| private void testCastOptionalString(String column, String asType, String table, |
| Object... baselineValues) throws Exception { |
| String query = String.format("select cast(%s as %s) c from %s", column, asType, table); |
| testBuilder() |
| .sqlQuery(query) |
| .unOrdered() |
| .baselineColumns("c") |
| .baselineValuesForSingleColumn(baselineValues) |
| .go(); |
| } |
| |
| private void testCastEmptyString(String asType) throws Exception { |
| Object[] nullObj = new Object[] {null}; |
| String query = String.format("select cast('' as %s) c from (values(1))", asType); |
| testBuilder() |
| .sqlQuery(query) |
| .unOrdered() |
| .baselineColumns("c") |
| .baselineValues(nullObj) |
| .go(); |
| } |
| |
| @Test |
| public void testCastOptionalVarCharToNumber() throws Exception { |
| testBuilder() |
| .sqlQuery("select to_number(columns[0], '#,##0.0') n from cp.`emptyStrings.csv`") |
| .unOrdered() |
| .baselineColumns("n") |
| .baselineValuesForSingleColumn(null, 1.0, 2.0) |
| .go(); |
| } |
| |
| @Test |
| public void testCastRequiredVarCharToNumber() throws Exception { |
| Object[] nullObj = new Object[] {null}; |
| testBuilder() |
| .sqlQuery("select to_number('', '#,##0.0') n from (values(1))") |
| .unOrdered() |
| .baselineColumns("n") |
| .baselineValues(nullObj) |
| .go(); |
| } |
| } |