GVNodeCheck

Description

This element defines the nodes where GreenVulcano^® ESB makes decisions and determines which is the next node to execute.

GreenVulcano^® ESB Configuration

Each 'GVNodeCheck' has a basic routing mechanism that chooses the next node only by the presence or absence of errors reported by exceptions. In any case, you can define more sophisticated routing mechanisms defining the sub-elements 'GVRouting', allowing many opportunities for branching flows:

• BASE (without 'GVRouting'): Depending on the type of input (GVBuffer or exception) will be designated as the next node, the one expressed by the attributes 'default-id' or 'on-exception-id'.
• ADVANCED (with 'GVRouting'): Regardless of the type of input (GVBuffer or exception) will assess the conditions for routing the order they are defined.
  The first condition is verified the evaluation ends and the corresponding node is designated as the next node of the workflow.
  If neither GVRouting condition is met and is considering an exception continues from

the node specified by 'on-exception-id' otherwise continues from the node specified by 'default-id'.
If 'default-id' is not configured will create an exception type it.greenvulcano.gvesb.core.GVCoreException and the node specified by 'on-exception- id' is the next node to execute.

Routing conditions refer to conditions specified by the items 'Conditions' present on the nodes Flow, Service and Client (from high to low priority).

The conditions can be redefined in several places, in case of ambiguity will be considered according to priority.

The GVNodeCheck Element is used by: Flow.

The following table shows the GVNodeCheck element's attributes:

Attribute	Type	Description
type	fixed	This attribute must assume the value flow-node.
op-type	fixed This attribute must assume the value check.
class	fixed	This attribute must assume the value it.greenvulcano.gvesb.core.flow.GVNodeCheck.
id	required	ID of the node. Unique within the 'Flow'.

Might contain the following subelements:

• Description
• GVRouting

GVRouting

Associates a condition to a node of the workflow.

If the condition is satisfied, the workflow transfers control to the associated node.

The following table shows the GVRouting element's attributes:

Attribute	Type	Description
condition	required	Name of the condition to be verified. The actual meaning of the condition is specified by the elements 'Conditions' present on the nodes 'Flow', 'Service' and 'Client'.
next-node-id	required	Node to execute if the condition is verified.
point-x	optional	X position of the node in the VulCon workflows editor. Immutable, used by VulCon®.
point-y	optional	Y position of the node in the VulCon workflows editor. Immutable, used by VulCon®.

Might contain the element Description.