Iterator Enqueue

Allows you to perform a queuing iteratively.

Developer Studio(Vulcon)/ GV Console Configuration

Iteration node GVIterationOperationNode Sub-element Description
Iterator Enqueue proxy-enqueue Sets a proxy to other Enqueue operation.

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.

proxy-enqueue

Operation useful as a proxy to other Enqueue operation.
The following table shows the proxy-enqueue element’s attributes:

Attribute Type Description
type fixed This attribute must assume the value enqueue.
class fixed This attribute must assume the value it.greenvulcano.gvesb.virtual.internal.ProxyEnqueueOperation.
name required Operation name. Used in the 'Flow' section to associate workflow nodes to VCL operations.
id-system required System providing the Call operation to call.
id-channel required System's channel.
operation required Channel's Enqueue operation.

Its sub-elements are:

  • Description
  • ServiceAlias