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

Class TruncFloat

java.lang.Object

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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

TruncDecimal, TruncFloatNoScale

public class TruncFloat
extends VectorExpression

Vectorized implementation of trunc(number, scale) function for float/double input

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	scale

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
TruncFloat()
TruncFloat(int colNum, int scale, 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 BigDecimal	trunc(BigDecimal input)
protected void	trunc(ColumnVector inputColVector, ColumnVector outputColVector, 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

Field Detail

scale

protected int scale

Constructor Detail

TruncFloat

public TruncFloat()

TruncFloat

public TruncFloat(int colNum,
                  int scale,
                  int outputColumnNum)

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

trunc

protected void trunc(ColumnVector inputColVector,
                     ColumnVector outputColVector,
                     int i)

trunc

protected BigDecimal trunc(BigDecimal input)

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression

getInputColumnType

protected VectorExpressionDescriptor.ArgumentType getInputColumnType()