svn commit: r740329 - /activemq/trunk/kahadb/src/main/java/org/apache/kahadb/util/LinkedNodeList.java

[chirino]

Author: chirino
Date: Tue Feb  3 16:02:01 2009
New Revision: 740329

URL: http://svn.apache.org/viewvc?rev=740329&view=rev
Log:
Added a handy little rotateTo method to be able to quickly rotate to a specific 
node.

Modified:
    
activemq/trunk/kahadb/src/main/java/org/apache/kahadb/util/LinkedNodeList.java

Modified: 
activemq/trunk/kahadb/src/main/java/org/apache/kahadb/util/LinkedNodeList.java
URL: 
http://svn.apache.org/viewvc/activemq/trunk/kahadb/src/main/java/org/apache/kahadb/util/LinkedNodeList.java?rev=740329&r1=740328&r2=740329&view=diff
==============================================================================
--- 
activemq/trunk/kahadb/src/main/java/org/apache/kahadb/util/LinkedNodeList.java 
(original)
+++ 
activemq/trunk/kahadb/src/main/java/org/apache/kahadb/util/LinkedNodeList.java 
Tue Feb  3 16:02:01 2009
@@ -105,6 +105,17 @@
         return head = head.getNextCircular();
     }
 
+    /**
+     * Move the head to the tail and returns the new head node.
+     * 
+     * @return
+     */
+    public void rotateTo(T head) {
+       assert head!=null: "Cannot rotate to a null head";
+       assert head.list == this : "Cannot rotate to a node not linked to this 
list";
+        this.head = head;
+    }
+
     public int size() {
         return size;
     }