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

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

All Implemented Interfaces:

Serializable

public class IfExprStringScalarStringColumn
extends VectorExpression

Compute IF(expr1, expr2, expr3) for 3 input column expressions. The first is always a boolean (LongColumnVector). The second is a string scalar. The third is a string column or non-constant expression result.

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

IfExprStringScalarStringColumn()

IfExprStringScalarStringColumn(int arg1Column, byte[] arg2Scalar, int arg3Column, int outputColumn)

Method Summary

void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
int	getArg1Column()
byte[]	getArg2Scalar()
int	getArg3Column()
VectorExpressionDescriptor.Descriptor	getDescriptor()
int	getOutputColumn() Returns the index of the output column in the array of column vectors.
String	getOutputType() Returns type of the output column.
void	setArg1Column(int colNum)
void	setArg2Scalar(byte[] value)
void	setArg3Column(int colNum)
void	setOutputColumn(int outputColumn)

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

getChildExpressions, getInputTypes, setChildExpressions, setInputTypes, setOutputType, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

IfExprStringScalarStringColumn

public IfExprStringScalarStringColumn(int arg1Column,
                                      byte[] arg2Scalar,
                                      int arg3Column,
                                      int outputColumn)

IfExprStringScalarStringColumn

public IfExprStringScalarStringColumn()

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

getOutputType

public String getOutputType()

Description copied from class: VectorExpression

Returns type of the output column.

Overrides:

getOutputType in class VectorExpression

getArg1Column

public int getArg1Column()

setArg1Column

public void setArg1Column(int colNum)

getArg2Scalar

public byte[] getArg2Scalar()

setArg2Scalar

public void setArg2Scalar(byte[] value)

getArg3Column

public int getArg3Column()

setArg3Column

public void setArg3Column(int colNum)

setOutputColumn

public void setOutputColumn(int outputColumn)

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression