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 and Description
ColumnStatistics(org.gridgain.internal.h2.value.Value min, org.gridgain.internal.h2.value.Value max, long nulls, long distinct, long total, int size, byte[] raw, long ver, long createdAt) Constructor.

Method Summary

Modifier and Type	Method and Description
long	createdAt()
long	distinct()
boolean	equals(Object o)
int	hashCode()
org.gridgain.internal.h2.value.Value	max()
org.gridgain.internal.h2.value.Value	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(org.gridgain.internal.h2.value.Value min,
                        org.gridgain.internal.h2.value.Value 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 org.gridgain.internal.h2.value.Value min()

Returns:

Min value in column.

max

public org.gridgain.internal.h2.value.Value 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