wt.visitor
Class BasicNodeExpandInfo

java.lang.Object
  wt.visitor.BasicNodeExpandInfo

All Implemented Interfaces:

NodeExpandInfo, Serializable

public class BasicNodeExpandInfo

extends Object

implements NodeExpandInfo, Serializable

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

See Also:

Serialized Form

Field Summary

private static Vector

linkExclusionList

Constructor Summary

BasicNodeExpandInfo()

Method Summary

private void	getAllEdges(String name, ObjectGraphEdge[] oge, Vector linksvec)
private void	getAllRefs(String name, ObjectGraphEdge[] oge, Vector linksvec)
Expander	getExpander(Persistable obj) Return an Expander for the specified node.
private void	getNeighboringNodesOf(String originClassName, Vector expandInfoVector)
private void	getNeighboringRefsOf(String originClassName, Vector expandInfoVector)
Vector	getRoleExpandInfos(Persistable obj) Return a Vector of RoleExpandInfo objects for the specified node.
Vector	getRoleExpandInfos(Persistable obj, ObjectGraphTemplate ogt)
Vector	getRoleExpandRefInfos(Persistable obj, ObjectGraphTemplate ogt)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

linkExclusionList

private static Vector linkExclusionList

Constructor Detail

BasicNodeExpandInfo

public BasicNodeExpandInfo()

Method Detail

getExpander

public Expander getExpander(Persistable obj)
                     throws WTException

Return an Expander for the specified node.

Supported API: true

Specified by:

getExpander in interface NodeExpandInfo

Parameters:

obj -

Returns:

Expander

Throws:

WTException

getRoleExpandInfos

public Vector getRoleExpandInfos(Persistable obj)
                          throws WTException

Description copied from interface: NodeExpandInfo

Return a Vector of RoleExpandInfo objects for the specified node.

Supported API: true

Specified by:

getRoleExpandInfos in interface NodeExpandInfo

Parameters:

obj -

Returns:

Vector

Throws:

WTException

getRoleExpandInfos

public Vector getRoleExpandInfos(Persistable obj,
                                 ObjectGraphTemplate ogt)
                          throws WTException

Throws:

WTException

getRoleExpandRefInfos

public Vector getRoleExpandRefInfos(Persistable obj,
                                    ObjectGraphTemplate ogt)
                             throws WTException

Throws:

WTException

getAllEdges

private void getAllEdges(String name,
                         ObjectGraphEdge[] oge,
                         Vector linksvec)

getAllRefs

private void getAllRefs(String name,
                        ObjectGraphEdge[] oge,
                        Vector linksvec)

getNeighboringRefsOf

private void getNeighboringRefsOf(String originClassName,
                                  Vector expandInfoVector)
                           throws WTException,
                                  WTPropertyVetoException,
                                  ObjectGraphException

Throws:

WTException

WTPropertyVetoException

ObjectGraphException

getNeighboringNodesOf

private void getNeighboringNodesOf(String originClassName,
                                   Vector expandInfoVector)
                            throws WTException,
                                   WTPropertyVetoException,
                                   ObjectGraphException

Throws:

WTException

WTPropertyVetoException

ObjectGraphException