Package org.flowable.engine.impl.delegate

Class JsonVariableAggregator

java.lang.Object

org.flowable.engine.impl.delegate.JsonVariableAggregator

All Implemented Interfaces:

VariableAggregator

public class JsonVariableAggregator
extends Object
implements VariableAggregator

Author:

Filip Hrisafov

Field Summary

Fields

Modifier and Type	Field	Description
protected ProcessEngineConfigurationImpl	processEngineConfiguration

Constructor Summary

Constructors

Constructor	Description
JsonVariableAggregator(ProcessEngineConfigurationImpl processEngineConfiguration)

Method Summary

Modifier and Type	Method	Description
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.
Object	aggregateSingleVariable(DelegateExecution execution, VariableAggregatorContext context)	Create a single variable value based on the provided aggregation definition.

Methods inherited from class java.lang.Object

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

Field Detail

processEngineConfiguration

protected final ProcessEngineConfigurationImpl processEngineConfiguration

Constructor Detail

JsonVariableAggregator

public JsonVariableAggregator(ProcessEngineConfigurationImpl processEngineConfiguration)

Method Detail

aggregateSingleVariable

public Object aggregateSingleVariable(DelegateExecution execution,
                                      VariableAggregatorContext context)

Description copied from interface: VariableAggregator

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.

Specified by:

aggregateSingleVariable in interface VariableAggregator

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

public Object aggregateMultiVariables(DelegateExecution execution,
                                      List<? extends org.flowable.variable.api.persistence.entity.VariableInstance> instances,
                                      VariableAggregatorContext context)

Description copied from interface: VariableAggregator

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.

Specified by:

aggregateMultiVariables in interface VariableAggregator

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 VariableAggregator.aggregateSingleVariable(DelegateExecution, VariableAggregatorContext))

context - the aggregation context

Returns:

the aggregated value