org.tikv.common.columnar

类 TiRowColumnVector

java.lang.Object

org.tikv.common.columnar.TiColumnVector

org.tikv.common.columnar.TiRowColumnVector

所有已实现的接口:

AutoCloseable

public class TiRowColumnVector
extends TiColumnVector

An implementation of TiColumnVector. It is a faked column vector; the underlying data is in row format.

字段概要

从类继承的字段 org.tikv.common.columnar.TiColumnVector

type

构造器概要

构造器

构造器和说明
TiRowColumnVector(DataType type, int colIdx, Row[] rows, int numOfRows) Sets up the data type of this column vector.

方法概要

限定符和类型	方法和说明
void	close() Cleans up memory for this column vector.
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.

从类继承的方法 org.tikv.common.columnar.TiColumnVector

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

从类继承的方法 java.lang.Object

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

构造器详细资料

TiRowColumnVector

public TiRowColumnVector(DataType type,
                         int colIdx,
                         Row[] rows,
                         int numOfRows)

Sets up the data type of this column vector.

方法详细资料

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.

指定者:

close 在接口中 AutoCloseable

指定者:

close 在类中 TiColumnVector

hasNull

public boolean hasNull()

Returns true if this column vector contains any null values.

指定者:

hasNull 在类中 TiColumnVector

numNulls

public int numNulls()

Returns the number of nulls in this column vector.

指定者:

numNulls 在类中 TiColumnVector

isNullAt

public boolean isNullAt(int rowId)

Returns whether the value at rowId is NULL.

指定者:

isNullAt 在类中 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.

指定者:

getBoolean 在类中 TiColumnVector

getByte

public byte getByte(int rowId)

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

指定者:

getByte 在类中 TiColumnVector

getShort

public short getShort(int rowId)

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

指定者:

getShort 在类中 TiColumnVector

getInt

public int getInt(int rowId)

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

指定者:

getInt 在类中 TiColumnVector

getLong

public long getLong(int rowId)

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

指定者:

getLong 在类中 TiColumnVector

getFloat

public float getFloat(int rowId)

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

指定者:

getFloat 在类中 TiColumnVector

getDouble

public double getDouble(int rowId)

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

指定者:

getDouble 在类中 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.

指定者:

getDecimal 在类中 TiColumnVector

getUTF8String

public String getUTF8String(int rowId)

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.

指定者:

getUTF8String 在类中 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.

指定者:

getBinary 在类中 TiColumnVector

getChild

protected TiColumnVector getChild(int ordinal)

指定者:

getChild 在类中 TiColumnVector

返回:

child [[TiColumnVector]] at the given ordinal.