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, VectorUDFDayOfWeekString, 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

Field Summary

Fields

Modifier and Type	Field and Description
protected Calendar	calendar
protected int	fieldLength
protected int	fieldStart

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

childExpressions, inputColumnNum, inputDataTypePhysicalVariations, inputTypeInfos, LOG, outputColumnNum, outputDataTypePhysicalVariation, outputTypeInfo

Constructor Summary

Constructors

Constructor and Description
VectorUDFTimestampFieldString()
VectorUDFTimestampFieldString(int colNum, int outputColumnNum, int fieldStart, int fieldLength)

Method Summary

Modifier and Type	Method and Description
void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
VectorExpressionDescriptor.Descriptor	getDescriptor()
protected long	getField(byte[] bytes, int start, int length)
void	initCalendar()
void	transientInit(org.apache.hadoop.conf.Configuration conf)
String	vectorExpressionParameters()

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

displayArrayOfUtf8ByteArrays, displayUtf8Bytes, doTransientInit, doTransientInit, evaluateChildren, getChildExpressions, getChildExpressionsForTransientInit, getColumnParamString, getDoubleValueParamString, getInputDataTypePhysicalVariations, getInputTypeInfos, getLongValueParamString, getOutputColumnNum, getOutputColumnVectorType, getOutputDataTypePhysicalVariation, getOutputTypeInfo, getParamTypeString, getTypeName, init, setChildExpressions, setInputDataTypePhysicalVariations, setInputTypeInfos, setOutputDataTypePhysicalVariation, setOutputTypeInfo, shouldConvertDecimal64ToDecimal, supportsCheckedExecution, toString

Methods inherited from class java.lang.Object

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

Field Detail

fieldStart

protected final int fieldStart

fieldLength

protected final int fieldLength

calendar

protected final transient Calendar calendar

Constructor Detail

VectorUDFTimestampFieldString

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

VectorUDFTimestampFieldString

public VectorUDFTimestampFieldString()

Method Detail

initCalendar

public void initCalendar()

transientInit

public void transientInit(org.apache.hadoop.conf.Configuration conf)
                   throws HiveException

Overrides:

transientInit in class VectorExpression

Throws:

HiveException

getField

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

Throws:

ParseException

evaluate

public void evaluate(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