程序包 com.mysql.cj.protocol.result

类 AbstractResultsetRow

java.lang.Object

com.mysql.cj.protocol.result.AbstractResultsetRow

所有已实现的接口:

ProtocolEntity, ResultsetRow, Row

直接已知子类:

AbstractBufferRow, ByteArrayRow

public abstract class AbstractResultsetRow
extends Object
implements ResultsetRow

字段概要

字段

修饰符和类型	字段	说明
protected ExceptionInterceptor	exceptionInterceptor
protected ColumnDefinition	metadata	The metadata of the fields of this result set.
protected ValueDecoder	valueDecoder
protected boolean	wasNull	Did the previous value retrieval find a NULL?

构造器概要

构造器

限定符	构造器	说明
protected	AbstractResultsetRow(ExceptionInterceptor exceptionInterceptor)

方法概要

修饰符和类型	方法	说明
protected <T> T	getValueFromBytes(int columnIndex, byte[] bytes, int offset, int length, ValueFactory<T> vf)	Get a value from a byte array.
Row	setMetadata(ColumnDefinition f)	Set metadata to enable getValue functionality.
boolean	wasNull()	Was the last value retrieved a NULL value?

从类继承的方法 java.lang.Object

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

从接口继承的方法 com.mysql.cj.protocol.ResultsetRow

isBinaryEncoded

从接口继承的方法 com.mysql.cj.result.Row

getBytes, getNull, getValue, setBytes

字段详细资料

exceptionInterceptor

protected ExceptionInterceptor exceptionInterceptor

metadata

protected ColumnDefinition metadata

The metadata of the fields of this result set.

valueDecoder

protected ValueDecoder valueDecoder

wasNull

protected boolean wasNull

Did the previous value retrieval find a NULL?

构造器详细资料

AbstractResultsetRow

protected AbstractResultsetRow(ExceptionInterceptor exceptionInterceptor)

方法详细资料

getValueFromBytes

protected <T> T getValueFromBytes(int columnIndex,
                                  byte[] bytes,
                                  int offset,
                                  int length,
                                  ValueFactory<T> vf)

Get a value from a byte array. The byte array is interpreted by the ValueDecoder which uses the value factory create the return value.

类型参数:

T - value type

参数:

columnIndex - The (internal) index of the column

bytes - byte array

offset - offset into byte array

length - length of value in byte array

vf - value factory

返回:

value

setMetadata

public Row setMetadata(ColumnDefinition f)

从接口复制的说明: Row

Set metadata to enable getValue functionality.

指定者:

setMetadata 在接口中 Row

参数:

f - ColumnDefinition

返回:

Row

wasNull

public boolean wasNull()

从接口复制的说明: Row

Was the last value retrieved a NULL value?

指定者:

wasNull 在接口中 Row

返回:

true if the last retrieved value was NULL.