spark CharType 源码
spark CharType 代码
文件路径：/sql/catalyst/src/main/scala/org/apache/spark/sql/types/CharType.scala
/*
* 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
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package org.apache.spark.sql.types
import scala.math.Ordering
import scala.reflect.runtime.universe.typeTag
import org.apache.spark.annotation.Experimental
import org.apache.spark.unsafe.types.UTF8String
@Experimental
case class CharType(length: Int) extends AtomicType {
require(length >= 0, "The length of char type cannot be negative.")
private[sql] type InternalType = UTF8String
@transient private[sql] lazy val tag = typeTag[InternalType]
private[sql] val ordering = implicitly[Ordering[InternalType]]
override def defaultSize: Int = length
override def typeName: String = s"char($length)"
override def toString: String = s"CharType($length)"
private[spark] override def asNullable: CharType = this
}
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