Package com.qfs.agg

Interface IAggregation

All Superinterfaces:

IGenericAggregation, Serializable

All Known Implementing Classes:

AAggregation, HistoryAggregation

public interface IAggregation
extends IGenericAggregation

An aggregation that is binding a single-field source with its destination aggregates.

Method Summary

Modifier and Type	Method	Description
IAggregationBinding	bindSource(IArrayReader source, IArrayWriter aggregates)	Binds a source of data that contains raw data elements with a destination data structure that contains aggregates.
default IAggregationBinding	bindSources(IArrayReader[] sources, IArrayWriter aggregates)	Binds sources of data that contain raw data elements with a destination data structure that contains aggregates.
IAggregationFunction	getAggregationFunction()	Returns the associated function.
String	getFieldName()	Returns the name of the input field on which this aggregation is being performed.
int	getInputDataType()	Returns the type of the source data.
default List<String>	getSourceIdentifiers()	Returns the identifiers used to retrieve the data sources needed as sources of this aggregation.
default int[]	getSourceTypes()	Returns the types of the data sources of this aggregation.

Methods inherited from interface com.qfs.agg.IGenericAggregation

bindAggregates, createChunkFactory, getAggregatedDataType, writeReplace

Method Detail

getFieldName

String getFieldName()

Returns the name of the input field on which this aggregation is being performed.

getSourceIdentifiers

default List<String> getSourceIdentifiers()

Description copied from interface: IGenericAggregation

Returns the identifiers used to retrieve the data sources needed as sources of this aggregation.

Specified by:

getSourceIdentifiers in interface IGenericAggregation

getInputDataType

int getInputDataType()

Returns the type of the source data.

Returns:

The type of the source data

getSourceTypes

default int[] getSourceTypes()

Description copied from interface: IGenericAggregation

Returns the types of the data sources of this aggregation.

Specified by:

getSourceTypes in interface IGenericAggregation

bindSource

IAggregationBinding bindSource(IArrayReader source,
                               IArrayWriter aggregates)

Binds a source of data that contains raw data elements with a destination data structure that contains aggregates.

Parameters:

source - The source array of raw data

aggregates - The target aggregates array

Returns:

The binding

bindSources

default IAggregationBinding bindSources(IArrayReader[] sources,
                                        IArrayWriter aggregates)

Description copied from interface: IGenericAggregation

Binds sources of data that contain raw data elements with a destination data structure that contains aggregates.

Specified by:

bindSources in interface IGenericAggregation

Parameters:

sources - The source array of raw data. Must be correlated (size and order) with this aggregation's source types.

aggregates - The target aggregates array

Returns:

The binding

getAggregationFunction

IAggregationFunction getAggregationFunction()

Description copied from interface: IGenericAggregation

Returns the associated function.

Specified by:

getAggregationFunction in interface IGenericAggregation