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

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

Direct Known Subclasses:

UDFOPMinus, UDFOPMod, UDFOPMultiply, UDFOPPlus, UDFPosMod

public abstract class UDFBaseNumericOp
extends UDF

Base class for numeric operators like +, -, / etc. All these operators share a common method resolver (NumericOpMethodResolver).

Field Summary

protected BigDecimalWritable	bigDecimalWritable
protected ByteWritable	byteWritable
protected DoubleWritable	doubleWritable
protected org.apache.hadoop.io.FloatWritable	floatWritable
protected org.apache.hadoop.io.IntWritable	intWritable
protected org.apache.hadoop.io.LongWritable	longWritable
protected ShortWritable	shortWritable

Constructor Summary

UDFBaseNumericOp()
Constructor.

Method Summary

abstract BigDecimalWritable	evaluate(BigDecimalWritable a, BigDecimalWritable b)
abstract ByteWritable	evaluate(ByteWritable a, ByteWritable b)
abstract DoubleWritable	evaluate(DoubleWritable a, DoubleWritable b)
abstract org.apache.hadoop.io.FloatWritable	evaluate(org.apache.hadoop.io.FloatWritable a, org.apache.hadoop.io.FloatWritable b)
abstract org.apache.hadoop.io.IntWritable	evaluate(org.apache.hadoop.io.IntWritable a, org.apache.hadoop.io.IntWritable b)
abstract org.apache.hadoop.io.LongWritable	evaluate(org.apache.hadoop.io.LongWritable a, org.apache.hadoop.io.LongWritable b)
abstract 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

Field Detail

byteWritable

protected ByteWritable byteWritable

shortWritable

protected ShortWritable shortWritable

intWritable

protected org.apache.hadoop.io.IntWritable intWritable

longWritable

protected org.apache.hadoop.io.LongWritable longWritable

floatWritable

protected org.apache.hadoop.io.FloatWritable floatWritable

doubleWritable

protected DoubleWritable doubleWritable

bigDecimalWritable

protected BigDecimalWritable bigDecimalWritable

Constructor Detail

UDFBaseNumericOp

public UDFBaseNumericOp()

Constructor. This constructor sets the resolver to be used for comparison operators. See UDFMethodResolver

Method Detail

evaluate

public abstract ByteWritable evaluate(ByteWritable a,
                                      ByteWritable b)

evaluate

public abstract ShortWritable evaluate(ShortWritable a,
                                       ShortWritable b)

evaluate

public abstract org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.io.IntWritable a,
                                                          org.apache.hadoop.io.IntWritable b)

evaluate

public abstract org.apache.hadoop.io.LongWritable evaluate(org.apache.hadoop.io.LongWritable a,
                                                           org.apache.hadoop.io.LongWritable b)

evaluate

public abstract org.apache.hadoop.io.FloatWritable evaluate(org.apache.hadoop.io.FloatWritable a,
                                                            org.apache.hadoop.io.FloatWritable b)

evaluate

public abstract DoubleWritable evaluate(DoubleWritable a,
                                        DoubleWritable b)

evaluate

public abstract BigDecimalWritable evaluate(BigDecimalWritable a,
                                            BigDecimalWritable b)