org.apache.spark.sql.api.java

Class MapType

Object

org.apache.spark.sql.api.java.DataType

org.apache.spark.sql.api.java.MapType

public class MapType
extends DataType

The data type representing Maps. A MapType object comprises two fields, DataType keyType, DataType valueType, and boolean valueContainsNull. The field of keyType is used to specify the type of keys in the map. The field of valueType is used to specify the type of values in the map. The field of valueContainsNull is used to specify if map values have null values. For values of a MapType column, keys are not allowed to have null values. To create a MapType, DataType.createMapType(DataType, DataType) or DataType.createMapType(DataType, DataType, boolean) should be used.

Field Summary

Fields inherited from class org.apache.spark.sql.api.java.DataType

BinaryType, BooleanType, ByteType, DecimalType, DoubleType, FloatType, IntegerType, LongType, ShortType, StringType, TimestampType

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o)
DataType	getKeyType()
DataType	getValueType()
int	hashCode()
boolean	isValueContainsNull()

Methods inherited from class org.apache.spark.sql.api.java.DataType

createArrayType, createArrayType, createMapType, createMapType, createStructField, createStructType, createStructType

Methods inherited from class Object

getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

getKeyType

public DataType getKeyType()

getValueType

public DataType getValueType()

isValueContainsNull

public boolean isValueContainsNull()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object