Package org.apache.spark.sql.types

Class UpCastRule

Object

org.apache.spark.sql.types.UpCastRule

public class UpCastRule
extends Object

Rule that defines which upcasts are allow in Spark.

Constructor Summary

Constructors

Constructor	Description
UpCastRule()

Method Summary

Modifier and Type	Method	Description
static boolean	canUpCast(DataType from, DataType to)	Returns true iff we can safely up-cast the from type to to type without any truncating or precision lose or possible runtime failures.
static scala.collection.immutable.IndexedSeq<NumericType>	numericPrecedence()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

UpCastRule

public UpCastRule()

Method Details

numericPrecedence

public static scala.collection.immutable.IndexedSeq<NumericType> numericPrecedence()

canUpCast

public static boolean canUpCast(DataType from,
 DataType to)

Returns true iff we can safely up-cast the from type to to type without any truncating or precision lose or possible runtime failures. For example, long to int, string to int are not up-casts.

Parameters:

from - (undocumented)

to - (undocumented)

Returns:

(undocumented)