org.apache.hadoop.hive.ql.udf

Class UDFToByte

java.lang.Object

org.apache.hadoop.hive.ql.exec.UDF

org.apache.hadoop.hive.ql.udf.UDFToByte

public class UDFToByte
extends UDF

UDFToByte.

Constructor Summary

Constructors

Constructor and Description
UDFToByte()

Method Summary

Modifier and Type	Method and Description
ByteWritable	evaluate(BooleanWritable i) Convert from boolean to a byte.
ByteWritable	evaluate(FloatWritable i) Convert from float to a byte.
ByteWritable	evaluate(IntWritable i) Convert from integer to a byte.
ByteWritable	evaluate(LongWritable i) Convert from long to a byte.
ByteWritable	evaluate(NullWritable i) Convert from void to a byte.
ByteWritable	evaluate(Text i) Convert from string to a byte.

Methods inherited from class org.apache.hadoop.hive.ql.exec.UDF

getRequiredFiles, getRequiredJars, getResolver, setResolver

Methods inherited from class java.lang.Object

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

Constructor Detail

UDFToByte

public UDFToByte()

Method Detail

evaluate

public ByteWritable evaluate(NullWritable i)

Convert from void to a byte. This is called for CAST(... AS TINYINT)

Parameters:

i - The void value to convert

Returns:

Byte

evaluate

public ByteWritable evaluate(BooleanWritable i)

Convert from boolean to a byte. This is called for CAST(... AS TINYINT)

Parameters:

i - The boolean value to convert

Returns:

Byte

evaluate

public ByteWritable evaluate(IntWritable i)

Convert from integer to a byte. This is called for CAST(... AS TINYINT)

Parameters:

i - The integer value to convert

Returns:

Byte

evaluate

public ByteWritable evaluate(LongWritable i)

Convert from long to a byte. This is called for CAST(... AS TINYINT)

Parameters:

i - The long value to convert

Returns:

Byte

evaluate

public ByteWritable evaluate(FloatWritable i)

Convert from float to a byte. This is called for CAST(... AS TINYINT)

Parameters:

i - The float value to convert

Returns:

Byte

evaluate

public ByteWritable evaluate(Text i)

Convert from string to a byte. This is called for CAST(... AS TINYINT)

Parameters:

i - The string value to convert

Returns:

Byte