Iterator CoreCall

Allows you to make a call to another department in an iterative manner.

Developer Studio(Vulcon)/ GV Console Configuration

Iteration node GVIterationOperationNode Sub-element Description
Iterator CoreCall CoreCall Invokes a GreenVulcano® ESB service.

The GVIteratorOperationNode is a Flow element that extends FlowNode. The iterations are made on the elements of a collection built by a CollectionDataProvider configured through the attribute ‘collection-DP’.
Collection elements are inserted in the GVBuffer object to pass to the plug-in with which loop through invocations.
You can configure a condition of premature exit from the loop.
By default, even if a particular iteration throws an exception all the iterations will be executed anyway.

The following table shows the GVIteratorOperationNode element’s attributes:

Attribute Type Description
class fixed This attribute must assume the value it.greenvulcano.gvesb.core.flow.GVIteratorOperationNode.
op-type required Indicatesthe type of operation that GreenVulcano® ESB must execute:
  • call: perform an VCL invocation
  • enqueue: perform a send a message.
  • corecall: execute an service call.
  • subcall: execute an subflow call.
collection-dp optional Name of Data Provider to use. Must return a collection of objects.
The attribute's value can't be null.
accumulate-output optional Iftrue, output of each iteration is to an array containing the previous iteration's output.
Default is true.


Defines the parameters to invoke a GreenVulcano® ESB service.
Dynamic fields can contains placeholders.

The following table shows the CoreCall element’s attributes:

Attribute Type Description
dynamic optional If'true' then id-system, id-service and operation attributes can contains metadata to be resolved at runtime.Default false.
id-service required Nameof Service to call.
id-system optional Nameof Service to call.
operation required Operation to invoke on the service.
Corresponds to a GreenVulcano® ESB communication operation or to a forward.
ref-dp optional Nameof Data Provider to use for modifying the GVBuffer content at each iteration.
change-log-context optional If true change the log context fields according to the new System/Service/Operation values.
Default true.
change-log-master-service optional If true change the log master service with the used one (configured or calculated), in order to write log messages into a different log file.Used only if @change-log-context is true.
Default false.