com.mysql.cj.protocol.a.result

Class NativeResultset

java.lang.Object

com.mysql.cj.protocol.a.result.NativeResultset

All Implemented Interfaces:

ProtocolEntity, Resultset

Direct Known Subclasses:

ResultSetImpl

public class NativeResultset
extends java.lang.Object
implements Resultset

Nested Class Summary

Nested classes/interfaces inherited from interface com.mysql.cj.protocol.Resultset

Resultset.Concurrency, Resultset.Type

Field Summary

Fields

Modifier and Type	Field and Description
protected ColumnDefinition	columnDefinition The metadata for this result set
protected Resultset	nextResultset
protected int	resultId The id (used when profiling) to identify us
protected ResultsetRows	rowData The actual rows
protected java.lang.String	serverInfo Any info message from the server that was created while generating this result set (if 'info parsing' is enabled for the connection).
protected Row	thisRow Pointer to current row data
protected long	updateCount How many rows were affected by UPDATE/INSERT/DELETE?
protected long	updateId Value generated for AUTO_INCREMENT columns

Constructor Summary

Constructors

Constructor and Description
NativeResultset()
NativeResultset(OkPacket ok) Create a result set for an executeUpdate statement.
NativeResultset(ResultsetRows rows)

Method Summary

Modifier and Type	Method and Description
void	clearNextResultset() We can't do this ourselves, otherwise the contract for Statement.getMoreResults() won't work correctly.
ColumnDefinition	getColumnDefinition()
Resultset	getNextResultset() Returns the next ResultSet in a multi-resultset "chain", if any, null if none exists.
int	getResultId() The id (used when profiling) to identify us
ResultsetRows	getRows()
java.lang.String	getServerInfo() Returns the server informational message returned from a DDL or DML statement (if any), or null if none.
long	getUpdateCount() Returns the update count for this result set (if one exists), otherwise -1.
long	getUpdateID() Returns the AUTO_INCREMENT value for the DDL/DML statement which created this result set.
boolean	hasRows() Does the result set contain rows, or is it the result of a DDL or DML statement?
void	initRowsWithMetadata() Set metadata of this Resultset to ResultsetRows it contains.
void	setColumnDefinition(ColumnDefinition metadata) Sometimes the driver doesn't have metadata before consuming the result set rows (because it's cached), or need to coerce the metadata returned by queries into that required by the particular specification (eg metadata returned by metadata queries into that required by the JDBC specification).
void	setNextResultset(Resultset nextResultset)

Methods inherited from class java.lang.Object

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

Field Detail

columnDefinition

protected ColumnDefinition columnDefinition

The metadata for this result set

rowData

protected ResultsetRows rowData

The actual rows

nextResultset

protected Resultset nextResultset

resultId

protected int resultId

The id (used when profiling) to identify us

updateCount

protected long updateCount

How many rows were affected by UPDATE/INSERT/DELETE?

updateId

protected long updateId

Value generated for AUTO_INCREMENT columns

serverInfo

protected java.lang.String serverInfo

Any info message from the server that was created while generating this result set (if 'info parsing' is enabled for the connection).

thisRow

protected Row thisRow

Pointer to current row data

Constructor Detail

NativeResultset

public NativeResultset()

NativeResultset

public NativeResultset(OkPacket ok)

Create a result set for an executeUpdate statement.

Parameters:

ok - OkPacket

NativeResultset

public NativeResultset(ResultsetRows rows)

Method Detail

setColumnDefinition

public void setColumnDefinition(ColumnDefinition metadata)

Description copied from interface: Resultset

Sometimes the driver doesn't have metadata before consuming the result set rows (because it's cached), or need to coerce the metadata returned by queries into that required by the particular specification (eg metadata returned by metadata queries into that required by the JDBC specification). So it can call this to set it after the fact.

Specified by:

setColumnDefinition in interface Resultset

Parameters:

metadata - field-level metadata for the result set

getColumnDefinition

public ColumnDefinition getColumnDefinition()

Specified by:

getColumnDefinition in interface Resultset

hasRows

public boolean hasRows()

Description copied from interface: Resultset

Does the result set contain rows, or is it the result of a DDL or DML statement?

Specified by:

hasRows in interface Resultset

Returns:

true if result set contains rows

getResultId

public int getResultId()

Description copied from interface: Resultset

The id (used when profiling) to identify us

Specified by:

getResultId in interface Resultset

Returns:

result id

initRowsWithMetadata

public void initRowsWithMetadata()

Description copied from interface: Resultset

Set metadata of this Resultset to ResultsetRows it contains.

Specified by:

initRowsWithMetadata in interface Resultset

setNextResultset

public void setNextResultset(Resultset nextResultset)

Specified by:

setNextResultset in interface Resultset

Parameters:

nextResultset - Sets the next result set in the result set chain for multiple result sets.

getNextResultset

public Resultset getNextResultset()

Description copied from interface: Resultset

Returns the next ResultSet in a multi-resultset "chain", if any, null if none exists.

Specified by:

getNextResultset in interface Resultset

Returns:

the nextResultSet, if any, null if none exists.

clearNextResultset

public void clearNextResultset()

We can't do this ourselves, otherwise the contract for Statement.getMoreResults() won't work correctly.

Specified by:

clearNextResultset in interface Resultset

getUpdateCount

public long getUpdateCount()

Description copied from interface: Resultset

Returns the update count for this result set (if one exists), otherwise -1.

Specified by:

getUpdateCount in interface Resultset

Returns:

return the update count for this result set (if one exists), otherwise -1.

getUpdateID

public long getUpdateID()

Description copied from interface: Resultset

Returns the AUTO_INCREMENT value for the DDL/DML statement which created this result set.

Specified by:

getUpdateID in interface Resultset

Returns:

the AUTO_INCREMENT value for the DDL/DML statement which created this result set.

getServerInfo

public java.lang.String getServerInfo()

Description copied from interface: Resultset

Returns the server informational message returned from a DDL or DML statement (if any), or null if none.

Specified by:

getServerInfo in interface Resultset

Returns:

the server informational message

getRows

public ResultsetRows getRows()

Specified by:

getRows in interface Resultset