org.apache.hadoop.hive.ql.udf

Class UDFToInteger

java.lang.Object

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

org.apache.hadoop.hive.ql.udf.UDFToInteger

public class UDFToInteger
extends UDF

UDFToInteger.

Constructor Summary

Constructors

Constructor and Description
UDFToInteger()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.io.IntWritable	evaluate(org.apache.hadoop.io.BooleanWritable i) Convert from boolean to an integer.
org.apache.hadoop.io.IntWritable	evaluate(ByteWritable i) Convert from byte to an integer.
org.apache.hadoop.io.IntWritable	evaluate(DoubleWritable i) Convert from double to an integer.
org.apache.hadoop.io.IntWritable	evaluate(org.apache.hadoop.io.FloatWritable i) Convert from float to an integer.
org.apache.hadoop.io.IntWritable	evaluate(org.apache.hadoop.hive.serde2.io.HiveDecimalWritable i)
org.apache.hadoop.io.IntWritable	evaluate(org.apache.hadoop.io.LongWritable i) Convert from long to an integer.
org.apache.hadoop.io.IntWritable	evaluate(org.apache.hadoop.io.NullWritable i) Convert from void to an integer.
org.apache.hadoop.io.IntWritable	evaluate(RecordIdentifier i) Convert a RecordIdentifier.
org.apache.hadoop.io.IntWritable	evaluate(ShortWritable i) Convert from short to an integer.
org.apache.hadoop.io.IntWritable	evaluate(org.apache.hadoop.io.Text i) Convert from string to an integer.
org.apache.hadoop.io.IntWritable	evaluate(TimestampWritableV2 i) Convert from Timestamp to an integer.

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

UDFToInteger

public UDFToInteger()

Method Detail

evaluate

public org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.io.NullWritable i)

Convert from void to an integer. This is called for CAST(... AS INT)

Parameters:

i - The void value to convert

Returns:

Integer

evaluate

public org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.io.BooleanWritable i)

Convert from boolean to an integer. This is called for CAST(... AS INT)

Parameters:

i - The boolean value to convert

Returns:

IntWritable

evaluate

public org.apache.hadoop.io.IntWritable evaluate(ByteWritable i)

Convert from byte to an integer. This is called for CAST(... AS INT)

Parameters:

i - The byte value to convert

Returns:

IntWritable

evaluate

public org.apache.hadoop.io.IntWritable evaluate(ShortWritable i)

Convert from short to an integer. This is called for CAST(... AS INT)

Parameters:

i - The short value to convert

Returns:

IntWritable

evaluate

public org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.io.LongWritable i)

Convert from long to an integer. This is called for CAST(... AS INT)

Parameters:

i - The long value to convert

Returns:

IntWritable

evaluate

public org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.io.FloatWritable i)

Convert from float to an integer. This is called for CAST(... AS INT)

Parameters:

i - The float value to convert

Returns:

IntWritable

evaluate

public org.apache.hadoop.io.IntWritable evaluate(DoubleWritable i)

Convert from double to an integer. This is called for CAST(... AS INT)

Parameters:

i - The double value to convert

Returns:

IntWritable

evaluate

public org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.io.Text i)

Convert from string to an integer. This is called for CAST(... AS INT)

Parameters:

i - The string value to convert

Returns:

IntWritable

evaluate

public org.apache.hadoop.io.IntWritable evaluate(TimestampWritableV2 i)

Convert from Timestamp to an integer. This is called for CAST(... AS INT)

Parameters:

i - The Timestamp value to convert

Returns:

IntWritable

evaluate

public org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.hive.serde2.io.HiveDecimalWritable i)

evaluate

public org.apache.hadoop.io.IntWritable evaluate(RecordIdentifier i)

Convert a RecordIdentifier. This is done so that we can use the RecordIdentifier in place of the bucketing column.

Parameters:

i - RecordIdentifier to convert

Returns:

value of the bucket identifier