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

Class StatisticsObjectConfiguration

java.lang.Object

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

All Implemented Interfaces:

Serializable, Comparable<StatisticsObjectConfiguration>

public class StatisticsObjectConfiguration
extends Object
implements Serializable, Comparable<StatisticsObjectConfiguration>

Describe configuration of the statistic for a database object (e.g. TABLE).

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StatisticsObjectConfiguration.Diff	Difference between current and target configuration.

Field Summary

Fields

Modifier and Type	Field	Description
static byte	DEFAULT_OBSOLESCENCE_MAX_PERCENT	Rows limit to renew partition statistics in percent.

Constructor Summary

Constructors

Constructor	Description
StatisticsObjectConfiguration(StatisticsKey key)	Constructor.
StatisticsObjectConfiguration(StatisticsKey key, Collection<StatisticsColumnConfiguration> cols, byte maxPartitionObsolescencePercent)	Constructor.

Method Summary

Modifier and Type	Method	Description
Map<String,StatisticsColumnConfiguration>	columns()	Get active (non tombstone) columns statistics configuration.
Map<String,StatisticsColumnConfiguration>	columnsAll()	Get configurations of all statistic columns includes tombstone configuration objects (dropped columns).
int	compareTo(@NotNull StatisticsObjectConfiguration o)	Compare only configuration from the same branch.
static StatisticsObjectConfiguration.Diff	diff(StatisticsObjectConfiguration oldCfg, StatisticsObjectConfiguration newCfg)	Calculate diff between two configuration.
StatisticsObjectConfiguration	dropColumns(Set<String> dropColNames)	Creates new configuration object for drop specified columns from current configuration.
boolean	equals(Object o)
int	hashCode()
StatisticsKey	key()	Get database object key (schema and name).
byte	maxPartitionObsolescencePercent()
static StatisticsObjectConfiguration	merge(@NotNull StatisticsObjectConfiguration oldCfg, @NotNull StatisticsObjectConfiguration newCfg)	Merge configuration changes with existing configuration.
StatisticsObjectConfiguration	refresh(Set<String> refreshCols)	Creates new configuration object to refresh statistic with current configuration.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_OBSOLESCENCE_MAX_PERCENT

public static final byte DEFAULT_OBSOLESCENCE_MAX_PERCENT

Rows limit to renew partition statistics in percent.

See Also:

Constant Field Values

Constructor Detail

StatisticsObjectConfiguration

public StatisticsObjectConfiguration(StatisticsKey key,
                                     Collection<StatisticsColumnConfiguration> cols,
                                     byte maxPartitionObsolescencePercent)

Constructor.

Parameters:

key - Statistics key.

cols - Column statistics configuration.

maxPartitionObsolescencePercent - Maximum number of changed rows per partition.

StatisticsObjectConfiguration

public StatisticsObjectConfiguration(StatisticsKey key)

Constructor.

Parameters:

key - Statistics key.

Method Detail

merge

public static StatisticsObjectConfiguration merge(@NotNull
                                                  @NotNull StatisticsObjectConfiguration oldCfg,
                                                  @NotNull
                                                  @NotNull StatisticsObjectConfiguration newCfg)

Merge configuration changes with existing configuration.

Parameters:

oldCfg - Previous configuration.

newCfg - Contains target configuration changes.

Returns:

merged configuration.

dropColumns

public StatisticsObjectConfiguration dropColumns(Set<String> dropColNames)

Creates new configuration object for drop specified columns from current configuration. Marks dropped columns as tombstone.

Parameters:

dropColNames - Set of dropped columns.

Returns:

Result configuration object.

refresh

public StatisticsObjectConfiguration refresh(Set<String> refreshCols)

Creates new configuration object to refresh statistic with current configuration.

Parameters:

refreshCols - Set of columns to refresh, if null or empty - all columns will be refreshed.

Returns:

Result configuration object.

diff

public static StatisticsObjectConfiguration.Diff diff(StatisticsObjectConfiguration oldCfg,
                                                      StatisticsObjectConfiguration newCfg)

Calculate diff between two configuration.

Parameters:

oldCfg - Current configuration.

newCfg - Target configuration.

Returns:

Configurations differences.

key

public StatisticsKey key()

Get database object key (schema and name).

Returns:

statistic key.

columnsAll

public Map<String,StatisticsColumnConfiguration> columnsAll()

Get configurations of all statistic columns includes tombstone configuration objects (dropped columns).

Returns:

statistic key.

columns

public Map<String,StatisticsColumnConfiguration> columns()

Get active (non tombstone) columns statistics configuration.

Returns:

Map column name to column statistics configuration.

maxPartitionObsolescencePercent

public byte maxPartitionObsolescencePercent()

Returns:

Maximum number of changed rows per partition.

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

compareTo

public int compareTo(@NotNull
                     @NotNull StatisticsObjectConfiguration o)

Compare only configuration from the same branch. I.e. can't correctly compare Cfg(A=v1,B=v3) vs Cfg(A=v2,B=v1) Cfg(A=v1,B=v3) vs Cfg(A=v1,C=v2) because there is no changes chain to get one from another.

Specified by:

compareTo in interface Comparable<StatisticsObjectConfiguration>

Parameters:

o - Other configuration to compare.

Returns:

Comparison result.