Package com.qfs.agg

Interface IMultiSourceAggregationFunction

All Superinterfaces:

IGenericAggregationFunction, IPluginValue, Serializable

All Known Subinterfaces:

IUserDefinedAggregateFunction

All Known Implementing Classes:

AMultiSourceAggregationFunction, AUserDefinedAggregateFunction, AUserDefinedAggregateFunctionWithRemoval, AVarianceAggregateFunction, PopulationStdAggregateFunction, PopulationVarianceAggregateFunction, SampleStdAggregateFunction, SampleVarianceAggregateFunction, SerializableUserDefinedAggregateFunction, SerializableUserDefinedAggregateFunctionWithRemoval, SerializableUserDefinedVectorAggregateFunction, SerializableUserDefinedVectorAggregateFunctionWithRemoval, SumProductFunction

public interface IMultiSourceAggregationFunction
extends IGenericAggregationFunction

Aggregate functions based on multiple data sources.

Author:

ActiveViam

Field Summary

Fields inherited from interface com.qfs.agg.IGenericAggregationFunction

SUM_PRODUCT_FUNCTION_PLUGIN_KEY

Method Summary

Modifier and Type	Method	Description
IMultiSourceAggregation	createAggregation(List<String> sourceIdentifiers, int[] sourceTypes)	Creates an IGenericAggregation that can bind a list of data structures to a single destination data structure.
static int	retrieveType(String pluginKey, int[] sourceTypes)	Retrieves the aggregated data-type of an IMultiSourceAggregationFunction from its plugin key.

Methods inherited from interface com.qfs.agg.IGenericAggregationFunction

getAggregatedType, withRemovalSupport

Methods inherited from interface com.quartetfs.fwk.types.IPluginValue

description, getPlugin, key, setPlugin

Method Detail

retrieveType

static int retrieveType(String pluginKey,
                        int[] sourceTypes)

Retrieves the aggregated data-type of an IMultiSourceAggregationFunction from its plugin key.

Parameters:

pluginKey - the aggregation function's plugin key

sourceTypes - the data types of the elements to be aggregated

Returns:

the type of the elements aggregated by the given aggregation function

createAggregation

IMultiSourceAggregation createAggregation(List<String> sourceIdentifiers,
                                          int[] sourceTypes)

Description copied from interface: IGenericAggregationFunction

Creates an IGenericAggregation that can bind a list of data structures to a single destination data structure.

The created aggregation is specialized for the given source identifiers, which can then be used to retrieve the correct source data structures to bind with a destination.

The two given collections must have the same size.

Specified by:

createAggregation in interface IGenericAggregationFunction

Parameters:

sourceIdentifiers - A way to identify the source data structures

sourceTypes - The data types of the elements to be aggregated

Returns:

the newly created aggregation, tailored for the given identifiers and types