org.apache.spark.sql.types

Class HiveStringType

Object

org.apache.spark.sql.types.DataType

org.apache.spark.sql.types.HiveStringType

Direct Known Subclasses:

CharType, VarcharType

public abstract class HiveStringType
extends DataType

A hive string type for compatibility. These datatypes should only used for parsing, and should NOT be used anywhere else. Any instance of these data types should be replaced by a StringType before analysis.

Constructor Summary

Constructors

Constructor and Description
HiveStringType()

Method Summary

Modifier and Type	Method and Description
int	defaultSize() The default size of a value of this data type, used internally for size estimation.
abstract int	length()
static DataType	replaceCharType(DataType dt)
static boolean	unapply(org.apache.spark.sql.catalyst.expressions.Expression e) Enables matching against AtomicType for expressions:

Methods inherited from class org.apache.spark.sql.types.DataType

canWrite, catalogString, equalsStructurally, fromDDL, fromJson, json, prettyJson, simpleString, sql, typeName

Methods inherited from class Object

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

Constructor Detail

HiveStringType

public HiveStringType()

Method Detail

replaceCharType

public static DataType replaceCharType(DataType dt)

defaultSize

public int defaultSize()

Description copied from class: DataType

The default size of a value of this data type, used internally for size estimation.

Specified by:

defaultSize in class DataType

Returns:

(undocumented)

length

public abstract int length()

unapply

public static boolean unapply(org.apache.spark.sql.catalyst.expressions.Expression e)

Enables matching against AtomicType for expressions:

   case Cast(child @ AtomicType(), StringType) =>
     ...
 

Parameters:

e - (undocumented)

Returns:

(undocumented)