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

Class StatisticsColumnData

java.lang.Object

org.apache.ignite.internal.processors.query.stat.messages.StatisticsColumnData

All Implemented Interfaces:

Serializable, Message

public class StatisticsColumnData
extends Object
implements Message

Statistics by column (or by set of columns, if they collected together)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static short	TYPE_CODE

Fields inherited from interface org.apache.ignite.plugin.extensions.communication.Message

DIRECT_TYPE_SIZE

Constructor Summary

Constructors

Constructor and Description
StatisticsColumnData() Default constructor.
StatisticsColumnData(GridH2ValueMessage min, GridH2ValueMessage max, long nulls, long distinct, long total, int size, byte[] rawData, long ver, long createdAt) Constructor.

Method Summary

Modifier and Type	Method and Description
long	createdAt()
short	directType()
long	distinct()
byte	fieldsCount()
GridH2ValueMessage	max()
GridH2ValueMessage	min()
long	nulls()
void	onAckReceived()
byte[]	rawData()
boolean	readFrom(ByteBuffer buf, MessageReader reader)
int	size()
long	total()
long	version()
boolean	writeTo(ByteBuffer buf, MessageWriter writer)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ignite.plugin.extensions.communication.Message

policy

Field Detail

TYPE_CODE

public static final short TYPE_CODE

See Also:

Constant Field Values

Constructor Detail

StatisticsColumnData

public StatisticsColumnData()

Default constructor.

StatisticsColumnData

public StatisticsColumnData(GridH2ValueMessage min,
                            GridH2ValueMessage max,
                            long nulls,
                            long distinct,
                            long total,
                            int size,
                            byte[] rawData,
                            long ver,
                            long createdAt)

Constructor.

Parameters:

min - Min value in column.

max - Max value in column.

nulls - Number of null values in column.

distinct - Total distinct values in column.

total - Total values in column.

size - Average size, for variable size types (in bytes).

rawData - Raw data to make statistics aggregate.

ver - Statistics version.

createdAt - Created at time, milliseconds.

Method Detail

min

public GridH2ValueMessage min()

Returns:

Min value in column.

max

public GridH2ValueMessage max()

Returns:

Max value in column.

nulls

public long nulls()

Returns:

Number of null values in column.

distinct

public long distinct()

Returns:

Total distinct values in column.

total

public long total()

Returns:

Total values in column.

size

public int size()

Returns:

Average size, for variable size types (in bytes).

rawData

public byte[] rawData()

Returns:

Raw data.

version

public long version()

Returns:

Raw data.

createdAt

public long createdAt()

Returns:

Created at time, milliseconds.

writeTo

public boolean writeTo(ByteBuffer buf,
                       MessageWriter writer)

Specified by:

writeTo in interface Message

readFrom

public boolean readFrom(ByteBuffer buf,
                        MessageReader reader)

Specified by:

readFrom in interface Message

directType

public short directType()

Specified by:

directType in interface Message

fieldsCount

public byte fieldsCount()

Specified by:

fieldsCount in interface Message

onAckReceived

public void onAckReceived()

Specified by:

onAckReceived in interface Message