org.apache.hadoop.hive.ql.udf
Class UDFOPPlus

java.lang.Object
  org.apache.hadoop.hive.ql.exec.UDF
      org.apache.hadoop.hive.ql.udf.UDFBaseNumericOp
          org.apache.hadoop.hive.ql.udf.UDFOPPlus

public class UDFOPPlus
extends UDFBaseNumericOp

The reason that we list evaluate methods with all numeric types is for both better performance and type checking (so we know int + int is still an int instead of a double); otherwise a single method that takes (Number a, Number b) and use a.doubleValue() == b.doubleValue() is enough. The case of int + double will be handled by implicit type casting using UDFRegistry.implicitConvertable method.

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.udf.UDFBaseNumericOp

bigDecimalWritable, byteWritable, doubleWritable, floatWritable, intWritable, longWritable, shortWritable

Constructor Summary

UDFOPPlus()

Method Summary

ByteWritable	evaluate(ByteWritable a, ByteWritable b)
FloatWritable	evaluate(FloatWritable a, FloatWritable b)
IntWritable	evaluate(IntWritable a, IntWritable b)
LongWritable	evaluate(LongWritable a, LongWritable b)
ShortWritable	evaluate(ShortWritable a, ShortWritable b)

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

UDFOPPlus

public UDFOPPlus()

Method Detail

evaluate

public ByteWritable evaluate(ByteWritable a,
                             ByteWritable b)

Specified by:

evaluate in class UDFBaseNumericOp

evaluate

public ShortWritable evaluate(ShortWritable a,
                              ShortWritable b)

Specified by:

evaluate in class UDFBaseNumericOp

evaluate

public IntWritable evaluate(IntWritable a,
                            IntWritable b)

Specified by:

evaluate in class UDFBaseNumericOp

evaluate

public LongWritable evaluate(LongWritable a,
                             LongWritable b)

Specified by:

evaluate in class UDFBaseNumericOp

evaluate

public FloatWritable evaluate(FloatWritable a,
                              FloatWritable b)

Specified by:

evaluate in class UDFBaseNumericOp