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

Class ColumnStatistics

java.lang.Object

org.apache.ignite.internal.processors.query.stat.ColumnStatistics

public class ColumnStatistics
extends Object

Values statistic in particular column.

Constructor Summary

Constructors

Constructor	Description
ColumnStatistics(BigDecimal min, BigDecimal max, long nulls, long distinct, long total, int size, byte[] raw, long ver, long createdAt)	Constructor.

Method Summary

Modifier and Type	Method	Description
long	createdAt()
long	distinct()
boolean	equals(Object o)
int	hashCode()
BigDecimal	max()
BigDecimal	min()
long	nulls()
byte[]	raw()
int	size()
String	toString()
long	total()
long	version()

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnStatistics

public ColumnStatistics(BigDecimal min,
                        BigDecimal max,
                        long nulls,
                        long distinct,
                        long total,
                        int size,
                        byte[] raw,
                        long ver,
                        long createdAt)

Constructor.

Parameters:

min - Min value in column or null.

max - Max value in column or null.

nulls - Number of null values in column.

distinct - Number of distinct values in column.

total - Total number of values in column.

size - Average size in bytes, for variable size only.

raw - Raw data to aggregate statistics.

ver - Statistics version.

createdAt - Created at time, milliseconds.

Method Detail

min

public BigDecimal min()

Returns:

Min value in column.

max

public BigDecimal max()

Returns:

Max value in column.

nulls

public long nulls()

Returns:

Number of null values in column.

distinct

public long distinct()

Returns:

Number of null values in column.

total

public long total()

Returns:

Total number of values in column.

size

public int size()

Returns:

Average size in bytes, for variable size only.

raw

public byte[] raw()

Returns:

Raw value needed to aggregate statistics.

version

public long version()

Returns:

Statistic's version.

createdAt

public long createdAt()

Returns:

Created at time, milliseconds

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