DPML Notify

[mcconnell at BerliOS <mcconnell AT mail.berlios.de>]

Author: mcconnell
Date: 2006-01-11 07:06:36 +0100 (Wed, 11 Jan 2006)
New Revision: 903

Modified:
   trunk/main/metro/part/api/src/main/net/dpml/part/ControlException.java
Log:
radd support for access to the root cause of a control exception

Modified: 
trunk/main/metro/part/api/src/main/net/dpml/part/ControlException.java
===================================================================
--- trunk/main/metro/part/api/src/main/net/dpml/part/ControlException.java    
  2006-01-11 05:54:18 UTC (rev 902)
+++ trunk/main/metro/part/api/src/main/net/dpml/part/ControlException.java    
  2006-01-11 06:06:36 UTC (rev 903)
@@ -65,5 +65,32 @@
     {
         return m_uri;
     }
+    
+   /**
+    * Iterates through exceptiion to locate the root causal exception.
+    * @return the root exception (possibly null)
+    */ 
+    public Throwable getRootCause()
+    {
+        Throwable cause = getCause();
+        if( null == cause )
+        {
+            return null;
+        }
+        else
+        {
+            while( true )
+            {
+                if( null == cause.getCause() )
+                {
+                    return cause;
+                }
+                else
+                {
+                    cause = cause.getCause();
+                }
+            }
+        }
+    }
 }