程序包 com.mysql.cj.protocol.a.result

类 ByteArrayRow

java.lang.Object

com.mysql.cj.protocol.result.AbstractResultsetRow

com.mysql.cj.protocol.a.result.ByteArrayRow

所有已实现的接口:

ProtocolEntity, ResultsetRow, Row

public class ByteArrayRow
extends AbstractResultsetRow

A RowHolder implementation that is for cached results (a-la mysql_store_result()).

字段概要

从类继承的字段 com.mysql.cj.protocol.result.AbstractResultsetRow

exceptionInterceptor, metadata, valueDecoder, wasNull

构造器概要

构造器

构造器	说明
ByteArrayRow(byte[][] internalRowData, ExceptionInterceptor exceptionInterceptor)
ByteArrayRow(byte[][] internalRowData, ExceptionInterceptor exceptionInterceptor, ValueDecoder valueDecoder)

方法概要

修饰符和类型	方法	说明
byte[]	getBytes(int index)	Returns the value at the given column as a byte array.
boolean	getNull(int columnIndex)	Check whether a column is NULL and update the 'wasNull' status.
<T> T	getValue(int columnIndex, ValueFactory<T> vf)	Implementation of getValue() based on the underlying byte array.
boolean	isBinaryEncoded()
void	setBytes(int index, byte[] value)	Sets the given byte array as a raw column value (only works currently with ByteArrayRow).

从类继承的方法 com.mysql.cj.protocol.result.AbstractResultsetRow

getValueFromBytes, setMetadata, wasNull

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

ByteArrayRow

public ByteArrayRow(byte[][] internalRowData,
                    ExceptionInterceptor exceptionInterceptor,
                    ValueDecoder valueDecoder)

ByteArrayRow

public ByteArrayRow(byte[][] internalRowData,
                    ExceptionInterceptor exceptionInterceptor)

方法详细资料

isBinaryEncoded

public boolean isBinaryEncoded()

getBytes

public byte[] getBytes(int index)

从接口复制的说明: Row

Returns the value at the given column as a byte array. The bytes represent the raw values returned by the server.

参数:

index - index of column (starting at 0) to return from.

返回:

the value for the given column; if the value is SQL NULL, the value returned is null

setBytes

public void setBytes(int index,
                     byte[] value)

从接口复制的说明: Row

Sets the given byte array as a raw column value (only works currently with ByteArrayRow).

参数:

index - index of the column (starting at 0) to set to.

value - the (raw) value to set

getNull

public boolean getNull(int columnIndex)

从接口复制的说明: Row

Check whether a column is NULL and update the 'wasNull' status.

参数:

columnIndex - of the column value (starting at 0) to check.

返回:

true if the column value is NULL, false if not.

getValue

public <T> T getValue(int columnIndex,
                      ValueFactory<T> vf)

Implementation of getValue() based on the underlying byte array. Delegate to superclass for decoding.

类型参数:

T - type to decode to

参数:

columnIndex - index of column to retrieve value from (0-indexed, not JDBC 1-indexed)

vf - value factory used to create the return value after decoding

返回:

The return value from the value factory