org.tikv.common.columnar

Class TiChunkColumnVector

java.lang.Object

org.tikv.common.columnar.TiColumnVector

org.tikv.common.columnar.TiChunkColumnVector

All Implemented Interfaces:

AutoCloseable

public class TiChunkColumnVector
extends TiColumnVector

An implementation of TiColumnVector. All data is stored in TiDB chunk format.

Field Summary

Fields inherited from class org.tikv.common.columnar.TiColumnVector

type

Constructor Summary

Constructors

Constructor and Description
TiChunkColumnVector(DataType dataType, int fixLength, int numOfRows, int numOfNulls, byte[] nullBitMaps, long[] offsets, ByteBuffer data)

Method Summary

Modifier and Type	Method and Description
void	close() Cleans up memory for this column vector.
void	free()
byte[]	getBinary(int rowId) Returns the binary type value for rowId.
boolean	getBoolean(int rowId) Returns the boolean type value for rowId.
byte	getByte(int rowId) Returns the byte type value for rowId.
protected TiColumnVector	getChild(int ordinal)
BigDecimal	getDecimal(int rowId, int precision, int scale) Returns the decimal type value for rowId.
double	getDouble(int rowId) Returns the double type value for rowId.
float	getFloat(int rowId) Returns the float type value for rowId.
int	getInt(int rowId) Returns the int type value for rowId.
long	getLong(int rowId) Returns the long type value for rowId.
short	getShort(int rowId) Returns the short type value for rowId.
String	getUTF8String(int rowId) Returns the string type value for rowId.
boolean	hasNull() Returns true if this column vector contains any null values.
boolean	isNullAt(int rowId) Returns whether the value at rowId is NULL.
int	numNulls() Returns the number of nulls in this column vector.
String	typeName()

Methods inherited from class org.tikv.common.columnar.TiColumnVector

dataType, getBooleans, getBytes, getDoubles, getFloats, getInts, getLongs, getShorts, numOfRows

Methods inherited from class java.lang.Object

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

Constructor Detail

TiChunkColumnVector

public TiChunkColumnVector(DataType dataType,
                           int fixLength,
                           int numOfRows,
                           int numOfNulls,
                           byte[] nullBitMaps,
                           long[] offsets,
                           ByteBuffer data)

Method Detail

typeName

public final String typeName()

free

public void free()

close

public void close()

Cleans up memory for this column vector. The column vector is not usable after this.

This overwrites `AutoCloseable.close` to remove the `throws` clause, as column vector is in-memory and we don't expect any exception to happen during closing.

Specified by:

close in interface AutoCloseable

Specified by:

close in class TiColumnVector

hasNull

public boolean hasNull()

Returns true if this column vector contains any null values.

Specified by:

hasNull in class TiColumnVector

numNulls

public int numNulls()

Returns the number of nulls in this column vector.

Specified by:

numNulls in class TiColumnVector

isNullAt

public boolean isNullAt(int rowId)

Description copied from class: TiColumnVector

Returns whether the value at rowId is NULL.

Specified by:

isNullAt in class TiColumnVector

getBoolean

public boolean getBoolean(int rowId)

Returns the boolean type value for rowId. The return value is undefined and can be anything, if the slot for rowId is null.

Specified by:

getBoolean in class TiColumnVector

getByte

public byte getByte(int rowId)

Description copied from class: TiColumnVector

Returns the byte type value for rowId. The return value is undefined and can be anything, if the slot for rowId is null.

Specified by:

getByte in class TiColumnVector

getShort

public short getShort(int rowId)

Description copied from class: TiColumnVector

Returns the short type value for rowId. The return value is undefined and can be anything, if the slot for rowId is null.

Specified by:

getShort in class TiColumnVector

getInt

public int getInt(int rowId)

Description copied from class: TiColumnVector

Returns the int type value for rowId. The return value is undefined and can be anything, if the slot for rowId is null.

Specified by:

getInt in class TiColumnVector

getLong

public long getLong(int rowId)

Description copied from class: TiColumnVector

Returns the long type value for rowId. The return value is undefined and can be anything, if the slot for rowId is null.

Specified by:

getLong in class TiColumnVector

getFloat

public float getFloat(int rowId)

Description copied from class: TiColumnVector

Returns the float type value for rowId. The return value is undefined and can be anything, if the slot for rowId is null.

Specified by:

getFloat in class TiColumnVector

getDouble

public double getDouble(int rowId)

Description copied from class: TiColumnVector

Returns the double type value for rowId. The return value is undefined and can be anything, if the slot for rowId is null.

Specified by:

getDouble in class TiColumnVector

getDecimal

public BigDecimal getDecimal(int rowId,
                             int precision,
                             int scale)

Returns the decimal type value for rowId. If the slot for rowId is null, it should return null.

Specified by:

getDecimal in class TiColumnVector

getUTF8String

public String getUTF8String(int rowId)

Description copied from class: TiColumnVector

Returns the string type value for rowId. If the slot for rowId is null, it should return null. Note that the returned UTF8String may point to the data of this column vector, please copy it if you want to keep it after this column vector is freed.

Specified by:

getUTF8String in class TiColumnVector

getBinary

public byte[] getBinary(int rowId)

Returns the binary type value for rowId. If the slot for rowId is null, it should return null.

Specified by:

getBinary in class TiColumnVector

getChild

protected TiColumnVector getChild(int ordinal)

Specified by:

getChild in class TiColumnVector

Returns:

child [[TiColumnVector]] at the given ordinal.