com.mysql.cj.protocol.x

Class XProtocolRow

java.lang.Object

com.mysql.cj.protocol.x.XProtocolRow

All Implemented Interfaces:

ProtocolEntity, Row

public class XProtocolRow
extends java.lang.Object
implements Row

ProtocolEntity representing an X Protocol result row.

Field Summary

Fields

Modifier and Type	Field and Description
private ColumnDefinition	metadata
private MysqlxResultset.Row	rowMessage
private boolean	wasNull

Constructor Summary

Constructors

Constructor and Description
XProtocolRow(MysqlxResultset.Row rowMessage)

Method Summary

Modifier and Type	Method and Description
boolean	getNull(int columnIndex) Check whether a column is NULL and update the 'wasNull' status.
<T> T	getValue(int columnIndex, ValueFactory<T> vf) Retrieve a value for the given column.
Row	setMetadata(ColumnDefinition columnDefinition) Set metadata to enable getValue functionality.
boolean	wasNull() Was the last value retrieved a NULL value?

Methods inherited from class java.lang.Object

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

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

getBytes, setBytes

Field Detail

metadata

private ColumnDefinition metadata

rowMessage

private MysqlxResultset.Row rowMessage

wasNull

private boolean wasNull

Constructor Detail

XProtocolRow

public XProtocolRow(MysqlxResultset.Row rowMessage)

Method Detail

setMetadata

public Row setMetadata(ColumnDefinition columnDefinition)

Description copied from interface: Row

Set metadata to enable getValue functionality.

Specified by:

setMetadata in interface Row

Parameters:

columnDefinition - ColumnDefinition

Returns:

Row

getValue

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

Description copied from interface: Row

Retrieve a value for the given column. This is the main facility to access values from the Row involving ValueDecoder and ValueFactory chain. Metadata must be set via Row constructor or Row.setMetadata(ColumnDefinition) call before calling this method to allow correct columnIndex boundaries check and data type recognition.

Specified by:

getValue in interface Row

Type Parameters:

T - type to decode to

Parameters:

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

Returns:

The return value from the value factory

getNull

public boolean getNull(int columnIndex)

Description copied from interface: Row

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

Specified by:

getNull in interface Row

Parameters:

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

Returns:

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

wasNull

public boolean wasNull()

Description copied from interface: Row

Was the last value retrieved a NULL value?

Specified by:

wasNull in interface Row

Returns:

true if the last retrieved value was NULL.