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

Class FuncDoubleToDecimal

java.lang.Object

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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

CastDoubleToDecimal, CastFloatToDecimal

public abstract class FuncDoubleToDecimal
extends VectorExpression

This is a superclass for unary double functions and expressions returning decimals that operate directly on the input and set the output.

See Also:

Serialized Form

Field Summary

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
FuncDoubleToDecimal()
FuncDoubleToDecimal(int inputColumn, 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 abstract void	func(org.apache.hadoop.hive.ql.exec.vector.DecimalColumnVector outputColVector, org.apache.hadoop.hive.ql.exec.vector.DoubleColumnVector inputColVector, int i)
VectorExpressionDescriptor.Descriptor	getDescriptor()
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, transientInit

Methods inherited from class java.lang.Object

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

Constructor Detail

FuncDoubleToDecimal

public FuncDoubleToDecimal(int inputColumn,
                           int outputColumnNum)

FuncDoubleToDecimal

public FuncDoubleToDecimal()

Method Detail

func

protected abstract void func(org.apache.hadoop.hive.ql.exec.vector.DecimalColumnVector outputColVector,
                             org.apache.hadoop.hive.ql.exec.vector.DoubleColumnVector inputColVector,
                             int i)

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