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

Class VectorUDFTimestampFieldTimestamp

java.lang.Object

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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

VectorUDFDayOfMonthTimestamp, VectorUDFDayOfWeekTimestamp, VectorUDFHourTimestamp, VectorUDFMinuteTimestamp, VectorUDFMonthTimestamp, VectorUDFSecondTimestamp, VectorUDFUnixTimeStampTimestamp, VectorUDFWeekOfYearTimestamp, VectorUDFYearTimestamp

public abstract class VectorUDFTimestampFieldTimestamp
extends VectorExpression

Abstract class to return various fields from a Timestamp.

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
VectorUDFTimestampFieldTimestamp()
VectorUDFTimestampFieldTimestamp(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.
VectorExpressionDescriptor.Descriptor	getDescriptor()
protected long	getTimestampField(org.apache.hadoop.hive.ql.exec.vector.TimestampColumnVector timestampColVector, int elementNum)
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

VectorUDFTimestampFieldTimestamp

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

VectorUDFTimestampFieldTimestamp

public VectorUDFTimestampFieldTimestamp()

Method Detail

initCalendar

public void initCalendar()

transientInit

public void transientInit()
                   throws HiveException

Overrides:

transientInit in class VectorExpression

Throws:

HiveException

getTimestampField

protected long getTimestampField(org.apache.hadoop.hive.ql.exec.vector.TimestampColumnVector timestampColVector,
                                 int elementNum)

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