Package org.flowable.engine.delegate.variable

Interface VariableAggregator

  • public interface VariableAggregator
    An interface that can be used to aggregate multiple variables into a single one based on an aggregation definition.
    Author:
    Filip Hrisafov

    • Method Detail

      • aggregateSingleVariable

        Object aggregateSingleVariable​(DelegateExecution execution,
                               VariableAggregatorContext context)
        Create a single variable value based on the provided aggregation definition. This is called after a single child multi instance execution is completed, or an overview for a child multi instance execution is needed.
        Parameters:
        execution - the delegate execution from where we need to get data from
        context - the aggregation context
        Returns:
        the value for the aggregated variable

      • aggregateMultiVariables

        Object aggregateMultiVariables​(DelegateExecution execution,
                               List<? extends org.flowable.variable.api.persistence.entity.VariableInstance> instances,
                               VariableAggregatorContext context)
        Aggregated the provided variable instances into one variable value. This is called when a multi instance execution and all its children is complete, or an overview for a multi instance execution is needed.
        Parameters:
        execution - the delegated execution 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(DelegateExecution, VariableAggregatorContext))
        context - the aggregation context
        Returns:
        the aggregated value