Package org.apache.curator.framework.recipes.cache

Interface TreeCacheSelector

All Known Implementing Classes:

DefaultTreeCacheSelector

public interface TreeCacheSelector

Controls which nodes a TreeCache processes. When iterating over the children of a parent node, a given node's children are queried only if traverseChildren(String) returns true. When caching the list of nodes for a parent node, a given node is stored only if acceptChild(String) returns true.

E.g. Given:

 root
     n1-a
     n1-b
         n2-a
         n2-b
             n3-a
     n1-c
     n1-d
 

You could have a TreeCache only work with the nodes: n1-a, n1-b, n2-a, n2-b, n1-d by returning false from traverseChildren() for "/root/n1-b/n2-b" and returning false from acceptChild("/root/n1-c").

Method Summary

Modifier and Type	Method	Description
boolean	acceptChild(java.lang.String fullPath)	Return true if this node should be returned from the cache
boolean	traverseChildren(java.lang.String fullPath)	Return true if children of this path should be cached.

Method Detail

traverseChildren

boolean traverseChildren(java.lang.String fullPath)

Return true if children of this path should be cached. i.e. if false is returned, this node is not queried to determine if it has children or not

Parameters:

fullPath - full path of the ZNode

Returns:

true/false

acceptChild

boolean acceptChild(java.lang.String fullPath)

Return true if this node should be returned from the cache

Parameters:

fullPath - full path of the ZNode

Returns:

true/false