程序包 com.mysql.cj.protocol.a.result

类 AbstractResultsetRows

java.lang.Object

com.mysql.cj.protocol.a.result.AbstractResultsetRows

所有已实现的接口:

ProtocolEntity, ResultsetRows, RowList, Iterator<Row>

直接已知子类:

ResultsetRowsCursor, ResultsetRowsStatic, ResultsetRowsStreaming

public abstract class AbstractResultsetRows
extends Object
implements ResultsetRows

字段概要

字段

修饰符和类型	字段	说明
protected static int	BEFORE_START_OF_ROWS
protected int	currentPositionInFetchedRows	Position in cache of rows, used to determine if we need to fetch more rows from the server to satisfy a request for the next row.
protected ColumnDefinition	metadata	Field-level metadata from the server.
protected ResultsetRowsOwner	owner	The result set that we 'belong' to.
protected ProtocolEntityFactory<ResultsetRow,NativePacketPayload>	rowFactory
protected boolean	wasEmpty

从接口继承的字段 com.mysql.cj.result.RowList

RESULT_SET_SIZE_UNKNOWN

构造器概要

构造器

构造器	说明
AbstractResultsetRows()

方法概要

修饰符和类型	方法	说明
ColumnDefinition	getMetadata()
ResultsetRowsOwner	getOwner()	Returns the result set that 'owns' this RowData
void	setMetadata(ColumnDefinition columnDefinition)	Sometimes the driver doesn't have metadata until after the statement has the result set in-hand (because it's cached), so it can call this to set it after the fact.
void	setOwner(ResultsetRowsOwner rs)	Set the result set that 'owns' this RowData
boolean	wasEmpty()	Did this result set have no rows?

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 java.util.Iterator

forEachRemaining, hasNext, next, remove

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

addRow, afterLast, beforeFirst, beforeLast, close, isAfterLast, isBeforeFirst, isDynamic, isEmpty, isFirst, isLast, moveRowRelative, setCurrentRow

从接口继承的方法 com.mysql.cj.result.RowList

get, getPosition, previous, size

字段详细资料

BEFORE_START_OF_ROWS

protected static final int BEFORE_START_OF_ROWS

另请参阅:

常量字段值

metadata

protected ColumnDefinition metadata

Field-level metadata from the server. We need this, because it is not sent for each batch of rows, but we need the metadata to unpack the results for each field.

currentPositionInFetchedRows

protected int currentPositionInFetchedRows

Position in cache of rows, used to determine if we need to fetch more rows from the server to satisfy a request for the next row.

wasEmpty

protected boolean wasEmpty

owner

protected ResultsetRowsOwner owner

The result set that we 'belong' to.

rowFactory

protected ProtocolEntityFactory<ResultsetRow,NativePacketPayload> rowFactory

构造器详细资料

AbstractResultsetRows

public AbstractResultsetRows()

方法详细资料

setOwner

public void setOwner(ResultsetRowsOwner rs)

从接口复制的说明: ResultsetRows

Set the result set that 'owns' this RowData

指定者:

setOwner 在接口中 ResultsetRows

参数:

rs - the result set that 'owns' this RowData

getOwner

public ResultsetRowsOwner getOwner()

从接口复制的说明: ResultsetRows

Returns the result set that 'owns' this RowData

指定者:

getOwner 在接口中 ResultsetRows

返回:

ResultsetRowsOwner

setMetadata

public void setMetadata(ColumnDefinition columnDefinition)

从接口复制的说明: ResultsetRows

Sometimes the driver doesn't have metadata until after the statement has the result set in-hand (because it's cached), so it can call this to set it after the fact.

指定者:

setMetadata 在接口中 ResultsetRows

参数:

columnDefinition - field-level metadata for the result set

getMetadata

public ColumnDefinition getMetadata()

指定者:

getMetadata 在接口中 ResultsetRows

wasEmpty

public boolean wasEmpty()

从接口复制的说明: ResultsetRows

Did this result set have no rows?

指定者:

wasEmpty 在接口中 ResultsetRows

返回:

true if the result set did not have rows