org.apache.hadoop.hive.ql.exec.vector.expressions
Class MathFuncLongToLong

java.lang.Object
  org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression
      org.apache.hadoop.hive.ql.exec.vector.expressions.MathFuncLongToLong

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

PosModLongToLong

public abstract class MathFuncLongToLong
extends VectorExpression

Implement vectorized math function that takes a long (and optionally additional constant argument(s)) and returns long. Use this for PMOD() etc. Do NOT use this for simple math functions like sin/cos/exp etc. that just take a single argument. For those, modify the template ColumnUnaryFunc.txt and expand the template to generate needed classes.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

VectorExpression.Type

Constructor Summary

MathFuncLongToLong()

MathFuncLongToLong(int colNum, int outputColumn)

Method Summary

void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
int	getColNum()
int	getOutputColumn() Returns the index of the output column in the array of column vectors.
String	getOutputType() Returns type of the output column.
void	setColNum(int colNum)
void	setOutputColumn(int outputColumn)

Methods inherited from class org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

getChildExpressions, getDescriptor, getInputTypes, setChildExpressions, setInputTypes, setOutputType, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MathFuncLongToLong

public MathFuncLongToLong(int colNum,
                          int outputColumn)

MathFuncLongToLong

public MathFuncLongToLong()

Method Detail

evaluate

public void evaluate(VectorizedRowBatch batch)

Description copied from class: VectorExpression

This is the primary method to implement expression logic.

Specified by:

evaluate in class VectorExpression

getOutputColumn

public int getOutputColumn()

Description copied from class: VectorExpression

Returns the index of the output column in the array of column vectors. If not applicable, -1 is returned.

Specified by:

getOutputColumn in class VectorExpression

Returns:

Index of the output column

setOutputColumn

public void setOutputColumn(int outputColumn)

getColNum

public int getColNum()

setColNum

public void setColNum(int colNum)

getOutputType

public String getOutputType()

Description copied from class: VectorExpression

Returns type of the output column.

Overrides:

getOutputType in class VectorExpression