Package com.mysql.cj.protocol.a.result

Class AbstractResultsetRows

java.lang.Object

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

All Implemented Interfaces:

ProtocolEntity, ResultsetRows, RowList, java.util.Iterator<Row>

Direct Known Subclasses:

ResultsetRowsCursor, ResultsetRowsStatic, ResultsetRowsStreaming

public abstract class AbstractResultsetRows
extends java.lang.Object
implements ResultsetRows

Field Summary

Fields

Modifier and Type	Field	Description
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

Fields inherited from interface com.mysql.cj.result.RowList

RESULT_SET_SIZE_UNKNOWN

Constructor Summary

Constructors

Constructor	Description
AbstractResultsetRows()

Method Summary

Modifier and Type	Method	Description
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?

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Methods inherited from interface com.mysql.cj.protocol.ResultsetRows

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

Methods inherited from interface com.mysql.cj.result.RowList

get, getPosition, previous, size

Field Details

BEFORE_START_OF_ROWS

protected static final int BEFORE_START_OF_ROWS

See Also:

Constant Field Values

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

Constructor Details

AbstractResultsetRows

public AbstractResultsetRows()

Method Details

setOwner

public void setOwner(ResultsetRowsOwner rs)

Description copied from interface: ResultsetRows

Set the result set that 'owns' this RowData

Specified by:

setOwner in interface ResultsetRows

Parameters:

rs - the result set that 'owns' this RowData

getOwner

public ResultsetRowsOwner getOwner()

Description copied from interface: ResultsetRows

Returns the result set that 'owns' this RowData

Specified by:

getOwner in interface ResultsetRows

Returns:

ResultsetRowsOwner

setMetadata

public void setMetadata(ColumnDefinition columnDefinition)

Description copied from interface: 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.

Specified by:

setMetadata in interface ResultsetRows

Parameters:

columnDefinition - field-level metadata for the result set

getMetadata

public ColumnDefinition getMetadata()

Specified by:

getMetadata in interface ResultsetRows

wasEmpty

public boolean wasEmpty()

Description copied from interface: ResultsetRows

Did this result set have no rows?

Specified by:

wasEmpty in interface ResultsetRows

Returns:

true if the result set did not have rows