Package wt.visitor

Interface NodeExpandInfo

All Known Implementing Classes:
BasicNodeExpandInfo
public interface NodeExpandInfo
This interface describes the applicable links and expand method for a given node during traversal. The links are specified by returning a Vector of RoleExpandInfo objects. The expand method is specified by returning an Expander object .

A class implementing this interface could use either a static or dynamic approach. For example, a static approach could use a hash table to return the RoleExpandInfo. The hash table with the appropriate RoleExpandInfo objects for each type of node. An example of a dynamic implementation could be done using introspection to return all of the association links at runtime and convert them to RoleExpandInfo objects.



Supported API: true

Extendable: true

  • Method Details

    • getRoleExpandInfos

      Vector getRoleExpandInfos(Persistable obj) throws WTException
      Return a Vector of RoleExpandInfo objects for the specified node.

      Supported API: true
      Parameters:
      obj -
      Returns:
      Vector
      Throws:
      WTException

    • getExpander

      Expander getExpander(Persistable obj) throws WTException
      Return an Expander for the specified node.

      Supported API: true
      Parameters:
      obj -
      Returns:
      Expander
      Throws:
      WTException