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

Class VectorUDFTimestampFieldDate

java.lang.Object

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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

VectorUDFDayOfMonthDate, VectorUDFDayOfWeekDate, VectorUDFHourDate, VectorUDFMinuteDate, VectorUDFMonthDate, VectorUDFSecondDate, VectorUDFUnixTimeStampDate, VectorUDFWeekOfYearDate, VectorUDFYearDate

public abstract class VectorUDFTimestampFieldDate
extends VectorExpression

Abstract class to return various fields from a Timestamp or Date.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Calendar	calendar
protected int	colNum
protected int	field

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

childExpressions, inputDataTypePhysicalVariations, inputTypeInfos, outputColumnNum, outputDataTypePhysicalVariation, outputTypeInfo

Constructor Summary

Constructors

Constructor and Description
VectorUDFTimestampFieldDate()
VectorUDFTimestampFieldDate(int field, int colNum, int outputColumnNum)

Method Summary

Modifier and Type	Method and Description
void	evaluate(org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch batch) This is the primary method to implement expression logic.
protected long	getDateField(long days)
VectorExpressionDescriptor.Descriptor	getDescriptor()
void	initCalendar()
void	transientInit()
String	vectorExpressionParameters()

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

displayArrayOfUtf8ByteArrays, displayUtf8Bytes, doTransientInit, doTransientInit, evaluateChildren, getChildExpressions, getColumnParamString, getDoubleValueParamString, getInputDataTypePhysicalVariations, getInputTypeInfos, getLongValueParamString, getOutputColumnNum, getOutputColumnVectorType, getOutputDataTypePhysicalVariation, getOutputTypeInfo, getParamTypeString, getTypeName, init, setChildExpressions, setInputDataTypePhysicalVariations, setInputTypeInfos, setOutputDataTypePhysicalVariation, setOutputTypeInfo, supportsCheckedExecution, toString

Methods inherited from class java.lang.Object

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

Field Detail

colNum

protected final int colNum

field

protected final int field

calendar

protected final transient Calendar calendar

Constructor Detail

VectorUDFTimestampFieldDate

public VectorUDFTimestampFieldDate(int field,
                                   int colNum,
                                   int outputColumnNum)

VectorUDFTimestampFieldDate

public VectorUDFTimestampFieldDate()

Method Detail

initCalendar

public void initCalendar()

transientInit

public void transientInit()
                   throws HiveException

Overrides:

transientInit in class VectorExpression

Throws:

HiveException

getDateField

protected long getDateField(long days)

evaluate

public void evaluate(org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch batch)
              throws HiveException

Description copied from class: VectorExpression

This is the primary method to implement expression logic.

Specified by:

evaluate in class VectorExpression

Throws:

HiveException

vectorExpressionParameters

public String vectorExpressionParameters()

Specified by:

vectorExpressionParameters in class VectorExpression

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression