org.apache.flink.table.codegen.calls.DateFormatCallGen.scala Maven / Gradle / Ivy
/*
* 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
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* See the License for the specific language governing permissions and
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*/
package org.apache.flink.table.codegen.calls
import org.apache.flink.api.common.typeinfo.BasicTypeInfo._
import org.apache.flink.table.codegen.{CodeGenerator, GeneratedExpression}
import org.apache.flink.table.codegen.calls.CallGenerator.generateCallIfArgsNotNull
class DateFormatCallGen extends CallGenerator {
override def generate(codeGenerator: CodeGenerator,
operands: Seq[GeneratedExpression])
: GeneratedExpression = {
if (operands.last.literal) {
val formatter = codeGenerator.addReusableDateFormatter(operands.last)
generateCallIfArgsNotNull(codeGenerator.nullCheck, STRING_TYPE_INFO, operands) {
terms => s"$formatter.print(${terms.head})"
}
} else {
generateCallIfArgsNotNull(codeGenerator.nullCheck, STRING_TYPE_INFO, operands) {
terms => s"""
|org.apache.flink.table.runtime.functions.
|DateTimeFunctions$$.MODULE$$.dateFormat(${terms.head}, ${terms.last});
""".stripMargin
}
}
}
}