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

Class TruncDateFromTimestamp

java.lang.Object

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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

TruncDateFromDate, TruncDateFromString

public class TruncDateFromTimestamp
extends VectorExpression

Vectorized implementation of trunc(date, fmt) function for timestamp input

See Also:

Serialized Form

Field Summary

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
TruncDateFromTimestamp()
TruncDateFromTimestamp(int colNum, byte[] fmt, int outputColumnNum)

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 VectorExpressionDescriptor.ArgumentType	getInputColumnType()
protected void	processDate(BytesColumnVector outV, int i, Date date)
protected void	truncDate(ColumnVector inV, BytesColumnVector outV, int i)
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, transientInit

Methods inherited from class java.lang.Object

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

Constructor Detail

TruncDateFromTimestamp

public TruncDateFromTimestamp(int colNum,
                              byte[] fmt,
                              int outputColumnNum)

TruncDateFromTimestamp

public TruncDateFromTimestamp()

Method Detail

vectorExpressionParameters

public String vectorExpressionParameters()

Specified by:

vectorExpressionParameters in class VectorExpression

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

truncDate

protected void truncDate(ColumnVector inV,
                         BytesColumnVector outV,
                         int i)

processDate

protected void processDate(BytesColumnVector outV,
                           int i,
                           Date date)

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression

getInputColumnType

protected VectorExpressionDescriptor.ArgumentType getInputColumnType()