vdiravka commented on a change in pull request #1494: DRILL-6768: Improve to_date, to_time and to_timestamp and correspondi… URL: https://github.com/apache/drill/pull/1494#discussion_r228969097
########## File path: exec/java-exec/src/main/codegen/templates/CastStringTypesToInterval.java ########## @@ -0,0 +1,110 @@ +/* + * 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 /> + +<#list cast.types as type> +<#if type.major == "VarCharInterval" || type.major == "NullableVarCharInterval"> <#-- Template to convert from VarChar to Interval, IntervalYear, IntervalDay --> + +<#if type.major == "VarCharInterval"> +<@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/gcast/Cast${type.from}To${type.to}.java" /> +<#elseif type.major == "NullableVarCharInterval"> +<@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/gcast/CastEmptyString${type.from}To${type.to}.java" /> +</#if> + +<#include "/@includes/license.ftl" /> + +package org.apache.drill.exec.expr.fn.impl.gcast; + +import io.netty.buffer.ByteBuf; + +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.Param; +import org.apache.drill.exec.expr.annotations.Workspace; +import org.apache.drill.exec.expr.holders.*; +import org.apache.drill.exec.record.RecordBatch; +import org.joda.time.MutableDateTime; +import org.joda.time.DateTimeZone; +import org.joda.time.DateMidnight; +import javax.inject.Inject; +import io.netty.buffer.DrillBuf; + +/* + * This class is generated using freemarker and the ${.template_name} template. + */ +@SuppressWarnings("unused") +<#if type.major == "VarCharInterval"> +@FunctionTemplate(name = "cast${type.to?upper_case}", + scope = FunctionTemplate.FunctionScope.SIMPLE, + nulls = NullHandling.NULL_IF_NULL) +public class Cast${type.from}To${type.to} implements DrillSimpleFunc { +<#elseif type.major == "NullableVarCharInterval"> +@FunctionTemplate(name = "castEmptyString${type.from}To${type.to?upper_case}", + scope = FunctionTemplate.FunctionScope.SIMPLE, + nulls = NullHandling.INTERNAL) +public class CastEmptyString${type.from}To${type.to} implements DrillSimpleFunc { +</#if> + + @Param ${type.from}Holder in; + @Output ${type.to}Holder out; + + public void setup() { + } + + public void eval() { + <#if type.major == "NullableVarCharInterval"> + if (<#if type.from == "NullableVarChar" || type.from == "NullableVar16Char" || type.from == "NullableVarBinary">in.isSet == 0 || </#if>in.end == in.start) { + out.isSet = 0; + return; + } + out.isSet = 1; + </#if> + + byte[] buf = new byte[in.end - in.start]; + in.buffer.getBytes(in.start, buf, 0, in.end - in.start); + String input = new String(buf, com.google.common.base.Charsets.UTF_8); + + // Parse the ISO format + org.joda.time.Period period = org.joda.time.Period.parse(input); + + <#if type.to == "Interval" || type.to == "NullableInterval"> + out.months = (period.getYears() * org.apache.drill.exec.vector.DateUtilities.yearsToMonths) + period.getMonths(); + + out.days = period.getDays(); + + out.milliseconds = (period.getHours() * org.apache.drill.exec.vector.DateUtilities.hoursToMillis) + + (period.getMinutes() * org.apache.drill.exec.vector.DateUtilities.minutesToMillis) + + (period.getSeconds() * org.apache.drill.exec.vector.DateUtilities.secondsToMillis) + + (period.getMillis()); + + <#elseif type.to == "IntervalDay" || type.to == "NullableIntervalDay"> + out.days = period.getDays(); + + out.milliseconds = (period.getHours() * org.apache.drill.exec.vector.DateUtilities.hoursToMillis) + + (period.getMinutes() * org.apache.drill.exec.vector.DateUtilities.minutesToMillis) + + (period.getSeconds() * org.apache.drill.exec.vector.DateUtilities.secondsToMillis) + + (period.getMillis()); + <#elseif type.to == "IntervalYear" || type.to == "NullableIntervalYear"> + out.value = (period.getYears() * org.apache.drill.exec.vector.DateUtilities.yearsToMonths) + period.getMonths(); + </#if> + } +} +</#if> <#-- type.major --> +</#list> Review comment: new line ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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