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

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

All Implemented Interfaces:

Serializable

public class IfExprStringScalarStringScalar
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 scalar.

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

IfExprStringScalarStringScalar()

IfExprStringScalarStringScalar(int arg1Column, byte[] arg2Scalar, byte[] arg3Scalar, int outputColumn)

Method Summary

void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
int	getArg1Column()
byte[]	getArg2Scalar()
byte[]	getArg3Scalar()
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	setArg3Scalar(byte[] value)
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

IfExprStringScalarStringScalar

public IfExprStringScalarStringScalar(int arg1Column,
                                      byte[] arg2Scalar,
                                      byte[] arg3Scalar,
                                      int outputColumn)

IfExprStringScalarStringScalar

public IfExprStringScalarStringScalar()

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)

getArg3Scalar

public byte[] getArg3Scalar()

setArg3Scalar

public void setArg3Scalar(byte[] value)

setOutputColumn

public void setOutputColumn(int outputColumn)

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression