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

Class IfExprStringScalarStringGroupColumn

java.lang.Object

org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

org.apache.hadoop.hive.ql.exec.vector.expressions.IfExprStringScalarStringGroupColumn

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

IfExprCharScalarStringGroupColumn, IfExprVarCharScalarStringGroupColumn

public class IfExprStringScalarStringGroupColumn
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

Field Summary

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

childExpressions, inputTypes, outputType

Constructor Summary

Constructors

Constructor and Description
IfExprStringScalarStringGroupColumn()
IfExprStringScalarStringGroupColumn(int arg1Column, byte[] arg2Scalar, int arg3Column, int outputColumn)

Method Summary

Methods

Modifier and Type	Method and Description
void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
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.

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

evaluateChildren, getChildExpressions, getInputTypes, setChildExpressions, setInputTypes, setOutputType, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

IfExprStringScalarStringGroupColumn

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

IfExprStringScalarStringGroupColumn

public IfExprStringScalarStringGroupColumn()

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

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression