org.sandev.ui.util
Interface OwnerNodeNameLookup

public interface OwnerNodeNameLookup

Lookup the instance name for a local support processing node. A class implementing OwnerNodeNameLookup must provide the name of a local node instance that can be found off the SandRoot. The found node supports the interface required by the caller for the context specified, so for example a node instance returned to a SandUI interface must implement UIFormOwner to bridge from UI actions to the application. For web services, the node must implement CommBridge.

Some possible implementation approaches:

• Returning a hardcoded string: Not flexible, but easy to implement and reasonable for simple deployments with only one UI server.
• Figure it out from the config: This consists of retrieving the deployment Configuration, looping through the nodes declared on this server, retrieving each one and testing if it implements UIFormOwner. This is somewhat tedious, and potentially subject node startup ordering constraints.
• Base and counter: In this case UI node instances and servers both follow a naming convention consisting of a base and a counter. So for example we might have the "TaskHeapUI01" node running on the "web01" server. By retrieving the current server name, taking the last two characters and appending them to a known base, the implementing class finds the name of the local UIFormOwner node.

Method Summary

java.lang.String

getNodeName() Returns the name of the local UIFormOwner node.

Method Detail

getNodeName

public java.lang.String getNodeName()

Returns the name of the local UIFormOwner node. If no local node was found, this method returns the empty string or null. See the class comments for more information.