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DRILL-3610: Fix TIMESTAMPADD and TIMESTAMPDIFF functions
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109 changes: 109 additions & 0 deletions
109
exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/TimestampDiff.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. | ||
| */ | ||
| <@pp.dropOutputFile /> | ||
| <#assign className="GTimestampDiff"/> | ||
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| <@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/${className}.java"/> | ||
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| <#include "/@includes/license.ftl"/> | ||
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| package org.apache.drill.exec.expr.fn.impl; | ||
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| import org.apache.drill.exec.expr.DrillSimpleFunc; | ||
| import org.apache.drill.exec.expr.annotations.FunctionTemplate; | ||
| import org.apache.drill.exec.expr.annotations.FunctionTemplate.NullHandling; | ||
| import org.apache.drill.exec.expr.annotations.Output; | ||
| import org.apache.drill.exec.expr.annotations.Workspace; | ||
| import org.apache.drill.exec.expr.annotations.Param; | ||
| import org.apache.drill.exec.expr.holders.*; | ||
| import org.apache.drill.exec.record.RecordBatch; | ||
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| /* | ||
| * This class is generated using freemarker and the ${.template_name} template. | ||
| */ | ||
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| public class ${className} { | ||
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| <#list dateIntervalFunc.timestampDiffUnits as unit> | ||
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| <#list dateIntervalFunc.dates as fromUnit> | ||
| <#list dateIntervalFunc.dates as toUnit> | ||
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| @FunctionTemplate(name = "timestampdiff${unit}", | ||
| scope = FunctionTemplate.FunctionScope.SIMPLE, | ||
| nulls = FunctionTemplate.NullHandling.NULL_IF_NULL) | ||
| public static class TimestampDiff${unit}${fromUnit}To${toUnit} implements DrillSimpleFunc { | ||
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| @Param ${fromUnit}Holder left; | ||
| @Param ${toUnit}Holder right; | ||
| @Output BigIntHolder out; | ||
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| public void setup() { | ||
| } | ||
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| public void eval() { | ||
| <#if unit == "Nanosecond"> | ||
| out.value = (right.value - left.value) * 1000000; | ||
| <#elseif unit == "Microsecond"> | ||
| out.value = (right.value - left.value) * 1000; | ||
| <#elseif unit == "Second"> | ||
| out.value = (right.value - left.value) / org.apache.drill.exec.vector.DateUtilities.secondsToMillis; | ||
| <#elseif unit == "Minute"> | ||
| out.value = (right.value - left.value) / org.apache.drill.exec.vector.DateUtilities.minutesToMillis; | ||
| <#elseif unit == "Hour"> | ||
| out.value = (right.value - left.value) / org.apache.drill.exec.vector.DateUtilities.hoursToMillis; | ||
| <#elseif unit == "Day"> | ||
| out.value = (right.value - left.value) / org.apache.drill.exec.vector.DateUtilities.daysToStandardMillis; | ||
| <#elseif unit == "Week"> | ||
| out.value = (right.value - left.value) / 604800000; // 7 * 24 * 60 * 60 * 1000 | ||
| <#elseif unit == "Month" || unit == "Quarter" || unit == "Year"> | ||
| long timeMilliseconds = left.value % org.apache.drill.exec.vector.DateUtilities.daysToStandardMillis | ||
| - right.value % org.apache.drill.exec.vector.DateUtilities.daysToStandardMillis; | ||
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| java.time.Period between = java.time.Period.between( | ||
| java.time.Instant.ofEpochMilli(left.value).atZone(java.time.ZoneOffset.UTC).toLocalDate(), | ||
| java.time.Instant.ofEpochMilli(right.value).atZone(java.time.ZoneOffset.UTC).toLocalDate()); | ||
| int days = between.getDays(); | ||
| if (timeMilliseconds < 0 && days > 0) { | ||
| // in the case of negative time value increases left operand days value | ||
| between = java.time.Period.between( | ||
| java.time.Instant.ofEpochMilli(left.value + org.apache.drill.exec.vector.DateUtilities.daysToStandardMillis).atZone(java.time.ZoneOffset.UTC).toLocalDate(), | ||
| java.time.Instant.ofEpochMilli(right.value).atZone(java.time.ZoneOffset.UTC).toLocalDate()); | ||
| } else if (timeMilliseconds > 0 && days < 0) { | ||
| // in the case of negative days value decreases it for the right operand | ||
| between = java.time.Period.between( | ||
| java.time.Instant.ofEpochMilli(left.value - org.apache.drill.exec.vector.DateUtilities.daysToStandardMillis).atZone(java.time.ZoneOffset.UTC).toLocalDate(), | ||
| java.time.Instant.ofEpochMilli(right.value).atZone(java.time.ZoneOffset.UTC).toLocalDate()); | ||
| } | ||
| int months = between.getMonths() + between.getYears() * org.apache.drill.exec.vector.DateUtilities.yearsToMonths; | ||
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| <#if unit == "Month"> | ||
| out.value = months; | ||
| <#elseif unit == "Quarter"> | ||
| out.value = months / 4; | ||
| <#elseif unit == "Year"> | ||
| out.value = months / org.apache.drill.exec.vector.DateUtilities.yearsToMonths; | ||
| </#if> | ||
| </#if> | ||
| } | ||
| } | ||
| </#list> | ||
| </#list> | ||
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| </#list> | ||
| } |
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