Package org.apache.ignite.internal.processors.query.stat.config

Class StatisticsColumnConfiguration

java.lang.Object

org.apache.ignite.internal.processors.query.stat.config.StatisticsColumnConfiguration

All Implemented Interfaces:

Serializable

public class StatisticsColumnConfiguration
extends Object
implements Serializable

Describe configuration of the statistic for a database object' column.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
StatisticsColumnConfiguration(String name, StatisticsColumnOverrides overrides)	Constructor.

Method Summary

Modifier and Type	Method	Description
StatisticsColumnConfiguration	createTombstone()	Create configuration for dropped statistic column.
boolean	equals(Object o)
int	hashCode()
static StatisticsColumnConfiguration	merge(StatisticsColumnConfiguration oldCfg, StatisticsColumnConfiguration newCfg)	Merge configuration changes with existing configuration.
String	name()	Get column name.
StatisticsColumnOverrides	overrides()	Overrides values.
StatisticsColumnConfiguration	refresh()	Create configuration for dropped statistic column.
boolean	tombstone()	Tombstone flag.
String	toString()
long	version()	Get collection version.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

StatisticsColumnConfiguration

public StatisticsColumnConfiguration(String name,
                                     StatisticsColumnOverrides overrides)

Constructor.

Parameters:

name - Column name.

overrides - If set - contains statistics overrides for local statistics.

Method Detail

name

public String name()

Get column name.

Returns:

Column name.

version

public long version()

Get collection version.

Returns:

Collection version.

tombstone

public boolean tombstone()

Tombstone flag.

Returns:

true statistic for this column is dropped, otherwise false.

overrides

public StatisticsColumnOverrides overrides()

Overrides values.

Returns:

Statistics column overrides or null if there are no overrides.

merge

public static StatisticsColumnConfiguration merge(StatisticsColumnConfiguration oldCfg,
                                                  StatisticsColumnConfiguration newCfg)

Merge configuration changes with existing configuration.

Parameters:

oldCfg - Previous configuration. May be null when new configuration is created.

newCfg - New configuration.

Returns:

Merged configuration.

createTombstone

public StatisticsColumnConfiguration createTombstone()

Create configuration for dropped statistic column.

Returns:

Tombstone column configuration.

refresh

public StatisticsColumnConfiguration refresh()

Create configuration for dropped statistic column.

Returns:

Columns configuration for refresh statistic.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object