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Interface w3c.tools.store.ResourceWalker

public interface ResourceWalker
An interface for walking through a set of resources.

See Also:
WalkerEngine

Method Index

o handleCycle(String, String[], String[])
The walker engine has detected a cycle.
o handleDone(Hashtable)
The whole tree of resources has been walked through.
o handleException(String[], int, Exception)
An exception occured while trying to visit a resource.
o handleInterruption()
The underlying resource walker has been interrupted.
o handleResource(Resource)
Time to handle the given resource.

Methods

o handleResource 
 public abstract boolean handleResource(Resource resource)
Time to handle the given resource. The resource walker is now visiting the given resource.

Parameters:
resource - The resource being visited.
Returns:
A boolean, true if that resource's children are to be visited, false otherwise.
o handleException 
 public abstract void handleException(String path[],
                                      int err,
                                      Exception ex)
An exception occured while trying to visit a resource.

Parameters:
path - The full path of the resource from root of walk.
err - The index of component within path we couldn't lookup.
ex - The exception the walker got while trying to get the children resource.
o handleCycle 
 public abstract void handleCycle(String storeid,
                                  String from[],
                                  String target[])
The walker engine has detected a cycle. Cycles are detected when a resource store is about to be revisited. Instead of going into an infinite loop, the walker notifies the walker of the cycle, and does not re-walk the resource store.

Parameters:
storeid - The identifier of the store on which the cycle was detected.
from - The path of the resource (from the root of the walk) that points to that store.
target - The path of the resource that already triggered a visit of that store.
o handleInterruption 
 public abstract void handleInterruption()
The underlying resource walker has been interrupted.

o handleDone 
 public abstract void handleDone(Hashtable stores)
The whole tree of resources has been walked through.

Parameters:
stores - Hashtable mapping the identifiers (a String) of visited stores to the path (a String array) of the resource (starting from the root of the walk). 
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