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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

StringHex, StringLower, StringUpper, VectorUDFDateString

public class StringUnaryUDF
extends VectorExpression

Expression for vectorized evaluation of unary UDFs on strings. An object of StringUnaryUDF.IUDFUnaryString is applied to every element of the vector.

See Also:

Serialized Form

Nested Class Summary

static interface

StringUnaryUDF.IUDFUnaryString

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

VectorExpression.Type

Constructor Summary

StringUnaryUDF()

Method Summary

void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
int	getColNum()
VectorExpressionDescriptor.Descriptor	getDescriptor()
StringUnaryUDF.IUDFUnaryString	getFunc()
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	setFunc(StringUnaryUDF.IUDFUnaryString func)
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

StringUnaryUDF

public StringUnaryUDF()

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

getColNum

public int getColNum()

setColNum

public void setColNum(int colNum)

getFunc

public StringUnaryUDF.IUDFUnaryString getFunc()

setFunc

public void setFunc(StringUnaryUDF.IUDFUnaryString func)

setOutputColumn

public void setOutputColumn(int outputColumn)

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression