svn commit: r468201 - /shale/framework/trunk/shale-dialog/src/main/java/org/apache/shale/dialog/base/AbstractDialogContext.java

[rahul]

Author: rahul
Date: Thu Oct 26 17:04:07 2006
New Revision: 468201

URL: http://svn.apache.org/viewvc?view=rev&rev=468201
Log:
Exceptions should first be logged before DialogListener callbacks, for better 
archival.
SHALE-268

Modified:
    
shale/framework/trunk/shale-dialog/src/main/java/org/apache/shale/dialog/base/AbstractDialogContext.java

Modified: 
shale/framework/trunk/shale-dialog/src/main/java/org/apache/shale/dialog/base/AbstractDialogContext.java
URL: 
http://svn.apache.org/viewvc/shale/framework/trunk/shale-dialog/src/main/java/org/apache/shale/dialog/base/AbstractDialogContext.java?view=diff&rev=468201&r1=468200&r2=468201
==============================================================================
--- 
shale/framework/trunk/shale-dialog/src/main/java/org/apache/shale/dialog/base/AbstractDialogContext.java
 (original)
+++ 
shale/framework/trunk/shale-dialog/src/main/java/org/apache/shale/dialog/base/AbstractDialogContext.java
 Thu Oct 26 17:04:07 2006
@@ -21,6 +21,8 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.apache.shale.dialog.DialogContext;
 import org.apache.shale.dialog.DialogListener;
 
@@ -41,6 +43,12 @@
     private List listeners = new ArrayList();
 
 
+    /**
+     * <p>The <code>Log</code> instance for this class.</p>
+     */
+    private transient Log log;
+
+
     //--------------------------------------------------- Listener Bookkeeping
 
     /**
@@ -139,13 +147,16 @@
 
     /**
      * Inform all registered [EMAIL PROTECTED] DialogListener}s that the dialog
-     * instance has encountered an unexpected error condition.
+     * instance has encountered an unexpected error condition. The exception
+     * is first logged for archival.
      *
      * @param exception A potentially implementation specific exception
      *                  during the execution of this dialog instance
      */
     protected void fireOnException(Exception exception) {
 
+        log().error(exception.getMessage(), exception);
+
         synchronized (listeners) {
             for (int i = 0; i < listeners.size(); i++) {
                 DialogListener listener = (DialogListener) listeners.get(i);
@@ -211,6 +222,19 @@
                 listener.onTransition(fromStateId, toStateId);
             }
         }
+
+    }
+
+
+    /**
+     * <p>Return the <code>Log</code> instance for this class.</p>
+     */
+    private Log log() {
+
+        if (log == null) {
+            log = LogFactory.getLog(AbstractDialogContext.class);
+        }
+        return log;
 
     }