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Represent nanosecond-precision timestamps with BigDecimal
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core/src/test/java/org/apache/calcite/avatica/util/TimestampFromNumberAccessorTest.java
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| /* | ||
| * 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.calcite.avatica.util; | ||
|
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| import org.apache.calcite.avatica.util.AbstractCursor.Getter; | ||
| import org.apache.calcite.avatica.util.AbstractCursor.TimestampFromNumberAccessor; | ||
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| import org.junit.Test; | ||
|
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| import java.math.BigDecimal; | ||
| import java.sql.SQLException; | ||
| import java.sql.Timestamp; | ||
| import java.time.LocalDateTime; | ||
| import java.time.ZoneOffset; | ||
| import java.util.Calendar; | ||
| import java.util.GregorianCalendar; | ||
| import java.util.Locale; | ||
| import java.util.TimeZone; | ||
|
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| import static org.junit.Assert.assertEquals; | ||
|
|
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| /** Unit tests for {@link TimestampFromNumberAccessor} */ | ||
| public class TimestampFromNumberAccessorTest { | ||
|
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| // An example of a calendar that observes DST. | ||
| private static final Calendar LOS_ANGELES_CALENDAR = | ||
| GregorianCalendar.getInstance(TimeZone.getTimeZone("America/Los_Angeles"), Locale.ROOT); | ||
|
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| @Test | ||
| public void testNoOffset() throws SQLException { | ||
| test( | ||
| 1673657135052L, // UTC: 2023-01-14 00:45:23.052 | ||
| null, | ||
| parseUtc("2023-01-14T00:45:35.052")); | ||
| } | ||
|
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| @Test | ||
| public void testNoOffsetNanoseconds() throws SQLException { | ||
| test( | ||
| new BigDecimal("1673657135.052637485"), // UTC: 2023-01-14 00:45:23.052637485 | ||
| null, | ||
| parseUtc("2023-01-14T00:45:35.052637485")); | ||
| } | ||
|
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| @Test | ||
| public void testNoOffsetDaylightSavings() throws SQLException { | ||
| test( | ||
| 1689320723052L, // UTC: 2023-07-14 07:45:23.052 | ||
| null, | ||
| parseUtc("2023-07-14T07:45:23.052")); | ||
| } | ||
|
|
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| @Test | ||
| public void testNoOffsetDaylightSavingsNanoseconds() throws SQLException { | ||
| test( | ||
| new BigDecimal("1689320723.052637485"), // UTC: 2023-07-14 07:45:23.052637485 | ||
| null, | ||
| parseUtc("2023-07-14T07:45:23.052637485")); | ||
| } | ||
|
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| @Test | ||
| public void testWithOffset() throws SQLException { | ||
| test( | ||
| 1673657135052L, // UTC: 2023-01-14 00:45:23.052 | ||
| LOS_ANGELES_CALENDAR, | ||
| parseUtc("2023-01-14T08:45:35.052")); | ||
| } | ||
|
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| @Test | ||
| public void testWithOffsetNanoseconds() throws SQLException { | ||
| test( | ||
| new BigDecimal("1673657135.052637485"), // UTC: 2023-01-14 00:45:23.052637485 | ||
| LOS_ANGELES_CALENDAR, | ||
| parseUtc("2023-01-14T08:45:35.052637485")); | ||
| } | ||
|
|
||
| @Test | ||
| public void testWithOffsetDaylightSavings() throws SQLException { | ||
| test( | ||
| 1689320723052L, // UTC: 2023-07-14 07:45:23.052 | ||
| LOS_ANGELES_CALENDAR, | ||
| parseUtc("2023-07-14T14:45:23.052")); | ||
| } | ||
|
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| @Test | ||
| public void testWithOffsetDaylightSavingsNanoseconds() throws SQLException { | ||
| test( | ||
| new BigDecimal("1689320723.052637485"), // UTC: 2023-07-14 07:45:23.052637485 | ||
| LOS_ANGELES_CALENDAR, | ||
| parseUtc("2023-07-14T14:45:23.052637485")); | ||
| } | ||
|
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| private static void test(Number v, Calendar calendar, Timestamp expectedValue) | ||
| throws SQLException { | ||
| TimestampFromNumberAccessor accessor = | ||
| new TimestampFromNumberAccessor( | ||
| new Getter() { | ||
| @Override | ||
| public Object getObject() { | ||
| return v; | ||
| } | ||
|
|
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| @Override | ||
| public boolean wasNull() { | ||
| return v == null; | ||
| } | ||
| }, | ||
| calendar); | ||
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| assertEquals(expectedValue, accessor.getTimestamp(calendar)); | ||
| assertEquals(expectedValue, accessor.getObject()); | ||
| } | ||
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| private static Timestamp parseUtc(String utcTimestamp) { | ||
| return Timestamp.from(LocalDateTime.parse(utcTimestamp).toInstant(ZoneOffset.UTC)); | ||
| } | ||
| } |