org.flowable.cmmn.api.delegate

Interface PlanItemVariableAggregator

public interface PlanItemVariableAggregator

An interface that can be used to aggregate multiple variables into a single one based on an aggregation definition.

Author:

Filip Hrisafov

Method Summary

Modifier and Type	Method and Description
Object	aggregateMultiVariables(DelegatePlanItemInstance planItemInstance, List<? extends VariableInstance> instances, PlanItemVariableAggregatorContext context) Aggregated the provided variable instances into one variable value.
Object	aggregateSingleVariable(DelegatePlanItemInstance planItemInstance, PlanItemVariableAggregatorContext context) Create a single variable value based on the provided aggregation definition.

Method Detail

aggregateSingleVariable

Object aggregateSingleVariable(DelegatePlanItemInstance planItemInstance,
                               PlanItemVariableAggregatorContext context)

Create a single variable value based on the provided aggregation definition. This is called after a single repeatable plan item instance is completed, or an overview for a non completed repeatable plan item instance is needed.

Parameters:

planItemInstance - the delegate planItemInstance from where we need to get data from

context - the aggregation context

Returns:

the value for the aggregated variable

aggregateMultiVariables

Object aggregateMultiVariables(DelegatePlanItemInstance planItemInstance,
                               List<? extends VariableInstance> instances,
                               PlanItemVariableAggregatorContext context)

Aggregated the provided variable instances into one variable value. This is called when all repeatable plan item instances are complete, or an overview for repeatable plan item instances is needed.

Parameters:

planItemInstance - the delegated planItemInstance for which we need to do the aggregation

instances - the variable values that should be aggregated (these variables are created based on the value from aggregateSingleVariable(DelegatePlanItemInstance, PlanItemVariableAggregatorContext))

context - the aggregation context

Returns:

the aggregated value