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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

CastDoubleToDecimal

public abstract class FuncDoubleToDecimal
extends VectorExpression

This is a superclass for unary double functions and expressions returning decimals that operate directly on the input and set the output.

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

FuncDoubleToDecimal()

FuncDoubleToDecimal(int inputColumn, int outputColumn)

Method Summary

void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
VectorExpressionDescriptor.Descriptor	getDescriptor()
int	getInputColumn()
int	getOutputColumn() Returns the index of the output column in the array of column vectors.
void	setInputColumn(int inputColumn)
void	setOutputColumn(int outputColumn)

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

getChildExpressions, getInputTypes, getOutputType, setChildExpressions, setInputTypes, setOutputType, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FuncDoubleToDecimal

public FuncDoubleToDecimal(int inputColumn,
                           int outputColumn)

FuncDoubleToDecimal

public FuncDoubleToDecimal()

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)

getInputColumn

public int getInputColumn()

setInputColumn

public void setInputColumn(int inputColumn)

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression