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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

VectorUDFDayOfMonthString, VectorUDFHourString, VectorUDFMinuteString, VectorUDFMonthString, VectorUDFSecondString, VectorUDFUnixTimeStampString, VectorUDFWeekOfYearString, VectorUDFYearString

public abstract class VectorUDFTimestampFieldString
extends VectorExpression

Abstract class to return various fields from a String.

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

protected int	colNum
protected int	fieldLength
protected int	fieldStart
protected int	outputColumn

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

childExpressions, inputTypes, outputType

Constructor Summary

VectorUDFTimestampFieldString()

VectorUDFTimestampFieldString(int colNum, int outputColumn, int fieldStart, int fieldLength)

Method Summary

protected long	doGetField(byte[] bytes, int start, int length)
void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
int	getColNum()
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	setColNum(int colNum)
void	setOutputColumn(int outputColumn)

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

Field Detail

colNum

protected int colNum

outputColumn

protected int outputColumn

fieldStart

protected final int fieldStart

fieldLength

protected final int fieldLength

Constructor Detail

VectorUDFTimestampFieldString

public VectorUDFTimestampFieldString(int colNum,
                                     int outputColumn,
                                     int fieldStart,
                                     int fieldLength)

VectorUDFTimestampFieldString

public VectorUDFTimestampFieldString()

Method Detail

doGetField

protected long doGetField(byte[] bytes,
                          int start,
                          int length)
                   throws ParseException

Throws:

ParseException

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)

setOutputColumn

public void setOutputColumn(int outputColumn)

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression