com.yahoo.bullet.querying.aggregations.grouping

Class GroupDataSummary

java.lang.Object

com.yahoo.bullet.querying.aggregations.grouping.GroupDataSummary

All Implemented Interfaces:

com.yahoo.sketches.tuple.Summary, com.yahoo.sketches.tuple.UpdatableSummary<CachingGroupData>

public class GroupDataSummary
extends Object
implements com.yahoo.sketches.tuple.UpdatableSummary<CachingGroupData>

Field Summary

Fields

Modifier and Type	Field and Description
static int	DATA_POSITION
static int	INITIALIZED_POSITION
static int	SIZE_POSITION

Constructor Summary

Constructors

Constructor and Description
GroupDataSummary()

Method Summary

Modifier and Type	Method and Description
GroupDataSummary	copy()
static com.yahoo.sketches.tuple.DeserializeResult<GroupDataSummary>	fromMemory(com.yahoo.memory.Memory serializedSummary) Needed to deserialize an instance of this GroupDataSummary from a Memory.
static GroupDataSummary	mergeInPlace(GroupDataSummary a, GroupDataSummary b) This method merges two GroupDataSummary into each other.
byte[]	toByteArray()
void	update(CachingGroupData value)

Methods inherited from class java.lang.Object

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

Field Detail

INITIALIZED_POSITION

public static final int INITIALIZED_POSITION

See Also:

Constant Field Values

SIZE_POSITION

public static final int SIZE_POSITION

See Also:

Constant Field Values

DATA_POSITION

public static final int DATA_POSITION

See Also:

Constant Field Values

Constructor Detail

GroupDataSummary

public GroupDataSummary()

Method Detail

update

public void update(CachingGroupData value)

Specified by:

update in interface com.yahoo.sketches.tuple.UpdatableSummary<CachingGroupData>

mergeInPlace

public static GroupDataSummary mergeInPlace(GroupDataSummary a,
                                            GroupDataSummary b)

This method merges two GroupDataSummary into each other. It picks the first non-null parameter to merge into and returns that after merge.

Parameters:

a - The first GroupDataSummary to merge.

b - The second GroupDataSummary to merge.

Returns:

The resulting merged summary or null if both arguments were null.

copy

public GroupDataSummary copy()

Specified by:

copy in interface com.yahoo.sketches.tuple.Summary

toByteArray

public byte[] toByteArray()

Specified by:

toByteArray in interface com.yahoo.sketches.tuple.Summary

fromMemory

public static com.yahoo.sketches.tuple.DeserializeResult<GroupDataSummary> fromMemory(com.yahoo.memory.Memory serializedSummary)

Needed to deserialize an instance of this GroupDataSummary from a Memory.

Parameters:

serializedSummary - The serialized summary as a Memory object.

Returns:

A DeserializeResult representing the deserialized summary.