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

Class DecimalColumnVector

java.lang.Object

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

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

public class DecimalColumnVector
extends ColumnVector

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.vector.ColumnVector

ColumnVector.Type

Field Summary

Fields

Modifier and Type	Field and Description
short	precision
short	scale
HiveDecimalWritable[]	vector A vector of HiveDecimalWritable objects.

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

isNull, isRepeating, noNulls

Constructor Summary

Constructors

Constructor and Description
DecimalColumnVector(int precision, int scale)
DecimalColumnVector(int size, int precision, int scale)

Method Summary

Modifier and Type	Method and Description
void	ensureSize(int size, boolean preserveData) Ensure the ColumnVector can hold at least size values.
void	fill(HiveDecimal value)
void	flatten(boolean selectedInUse, int[] sel, int size)
void	set(int elementNum, HiveDecimal hiveDec)
void	set(int elementNum, HiveDecimalWritable writeable)
void	setElement(int outElementNum, int inputElementNum, ColumnVector inputVector) Set the element in this column vector from the given input vector.
void	setNullDataValue(int elementNum)
void	stringifyValue(StringBuilder buffer, int row) Print the value for this column into the given string builder.

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

flattenNoNulls, flattenPush, flattenRepeatingNulls, init, reset, setRepeating, unFlatten

Methods inherited from class java.lang.Object

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

Field Detail

vector

public HiveDecimalWritable[] vector

A vector of HiveDecimalWritable objects. For high performance and easy access to this low-level structure, the fields are public by design (as they are in other ColumnVector types).

scale

public short scale

precision

public short precision

Constructor Detail

DecimalColumnVector

public DecimalColumnVector(int precision,
                           int scale)

DecimalColumnVector

public DecimalColumnVector(int size,
                           int precision,
                           int scale)

Method Detail

fill

public void fill(HiveDecimal value)

flatten

public void flatten(boolean selectedInUse,
                    int[] sel,
                    int size)

Specified by:

flatten in class ColumnVector

setElement

public void setElement(int outElementNum,
                       int inputElementNum,
                       ColumnVector inputVector)

Description copied from class: ColumnVector

Set the element in this column vector from the given input vector. This method can assume that the output does not have isRepeating set.

Specified by:

setElement in class ColumnVector

stringifyValue

public void stringifyValue(StringBuilder buffer,
                           int row)

Description copied from class: ColumnVector

Print the value for this column into the given string builder.

Specified by:

stringifyValue in class ColumnVector

Parameters:

buffer - the buffer to print into

row - the id of the row to print

set

public void set(int elementNum,
                HiveDecimalWritable writeable)

set

public void set(int elementNum,
                HiveDecimal hiveDec)

setNullDataValue

public void setNullDataValue(int elementNum)

ensureSize

public void ensureSize(int size,
                       boolean preserveData)

Description copied from class: ColumnVector

Ensure the ColumnVector can hold at least size values. This method is deliberately *not* recursive because the complex types can easily have more (or less) children than the upper levels.

Overrides:

ensureSize in class ColumnVector

Parameters:

size - the new minimum size

preserveData - should the old data be preserved?