org.apache.paimon.data.columnar.writable

Class AbstractWritableVector

java.lang.Object

org.apache.paimon.data.columnar.writable.AbstractWritableVector

All Implemented Interfaces:

Serializable, ColumnVector, WritableColumnVector

Direct Known Subclasses:

AbstractHeapVector

public abstract class AbstractWritableVector
extends Object
implements WritableColumnVector, Serializable

Contains the shared structure for ColumnVectors, including NULL information and dictionary. NOTE: if there are some nulls, must set noNulls to false.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	capacity
protected Dictionary	dictionary The Dictionary for this column.
protected int	elementsAppended Current write cursor (row index) when appending data.
protected boolean	isAllNull
protected boolean	noNulls

Constructor Summary

Constructors

Constructor and Description
AbstractWritableVector(int capacity)

Method Summary

Modifier and Type	Method and Description
void	addElementsAppended(int num) Increment number of elements appended by 'num'.
int	getCapacity()
int	getElementsAppended()
boolean	hasDictionary() Returns true if this column has a dictionary.
boolean	isAllNull() Check if all values are null.
void	reserve(int requiredCapacity)
protected abstract void	reserveInternal(int newCapacity)
void	reset() Resets the column to default state.
void	setAllNull() Set all values to null.
void	setDictionary(Dictionary dictionary) Update the dictionary.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.paimon.data.columnar.writable.WritableColumnVector

fillWithNulls, getDictionaryIds, reserveAdditional, reserveDictionaryIds, setNullAt, setNulls

Methods inherited from interface org.apache.paimon.data.columnar.ColumnVector

getChildren, isNullAt

Field Detail

noNulls

protected boolean noNulls

isAllNull

protected boolean isAllNull

elementsAppended

protected int elementsAppended

Current write cursor (row index) when appending data.

capacity

protected int capacity

dictionary

protected Dictionary dictionary

The Dictionary for this column. If it's not null, will be used to decode the value in get().

Constructor Detail

AbstractWritableVector

public AbstractWritableVector(int capacity)

Method Detail

setDictionary

public void setDictionary(Dictionary dictionary)

Update the dictionary.

Specified by:

setDictionary in interface WritableColumnVector

hasDictionary

public boolean hasDictionary()

Returns true if this column has a dictionary.

Specified by:

hasDictionary in interface WritableColumnVector

setAllNull

public void setAllNull()

Description copied from interface: WritableColumnVector

Set all values to null.

Specified by:

setAllNull in interface WritableColumnVector

isAllNull

public boolean isAllNull()

Description copied from interface: WritableColumnVector

Check if all values are null.

Specified by:

isAllNull in interface WritableColumnVector

getElementsAppended

public int getElementsAppended()

Specified by:

getElementsAppended in interface WritableColumnVector

addElementsAppended

public final void addElementsAppended(int num)

Increment number of elements appended by 'num'.

Specified by:

addElementsAppended in interface WritableColumnVector

getCapacity

public int getCapacity()

Specified by:

getCapacity in interface ColumnVector

reset

public void reset()

Description copied from interface: WritableColumnVector

Resets the column to default state.

Specified by:

reset in interface WritableColumnVector

reserve

public void reserve(int requiredCapacity)

Specified by:

reserve in interface WritableColumnVector

reserveInternal

protected abstract void reserveInternal(int newCapacity)