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

Class MathFuncLongToLong

java.lang.Object

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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

PosModLongToLong

public abstract class MathFuncLongToLong
extends VectorExpression

Implement vectorized math function that takes a long (and optionally additional constant argument(s)) and returns long. Use this for PMOD() etc. Do NOT use this for simple math functions like sin/cos/exp etc. that just take a single argument. For those, modify the template ColumnUnaryFunc.txt and expand the template to generate needed classes.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	colNum

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
MathFuncLongToLong()
MathFuncLongToLong(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.
protected abstract long	func(long d)
String	vectorExpressionParameters()

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

displayArrayOfUtf8ByteArrays, displayUtf8Bytes, doTransientInit, doTransientInit, evaluateChildren, getChildExpressions, getColumnParamString, getDescriptor, 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

Field Detail

colNum

protected final int colNum

Constructor Detail

MathFuncLongToLong

public MathFuncLongToLong(int colNum,
                          int outputColumnNum)

MathFuncLongToLong

public MathFuncLongToLong()

Method Detail

func

protected abstract long func(long d)

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