svn commit: r1306605 - /webservices/commons/trunk/modules/axiom/modules/axiom-api/src/main/java/org/apache/axiom/om/OMAbstractFactory.java

[veithen]

Author: veithen
Date: Wed Mar 28 21:38:51 2012
New Revision: 1306605

URL: http://svn.apache.org/viewvc?rev=1306605&view=rev
Log:
Give the user a hint about the missing JAR when throwing an exception with "No 
meta factory found for feature 'xxx'".

Modified:
    
webservices/commons/trunk/modules/axiom/modules/axiom-api/src/main/java/org/apache/axiom/om/OMAbstractFactory.java

Modified: 
webservices/commons/trunk/modules/axiom/modules/axiom-api/src/main/java/org/apache/axiom/om/OMAbstractFactory.java
URL: 
http://svn.apache.org/viewvc/webservices/commons/trunk/modules/axiom/modules/axiom-api/src/main/java/org/apache/axiom/om/OMAbstractFactory.java?rev=1306605&r1=1306604&r2=1306605&view=diff
==============================================================================
--- 
webservices/commons/trunk/modules/axiom/modules/axiom-api/src/main/java/org/apache/axiom/om/OMAbstractFactory.java
 (original)
+++ 
webservices/commons/trunk/modules/axiom/modules/axiom-api/src/main/java/org/apache/axiom/om/OMAbstractFactory.java
 Wed Mar 28 21:38:51 2012
@@ -154,7 +154,20 @@ public class OMAbstractFactory {
         }
         OMMetaFactory metaFactory = locator.getOMMetaFactory(feature);
         if (metaFactory == null) {
-            throw new OMException("No meta factory found for feature '" + 
feature + "'");
+            String jarHint;
+            if (feature.equals(FEATURE_DEFAULT)) {
+                jarHint = "axiom-impl.jar";
+            } else if (feature.equals(FEATURE_DOM)) {
+                jarHint = "axiom-dom.jar";
+            } else {
+                jarHint = null;
+            }
+            StringBuilder buffer = new StringBuilder();
+            buffer.append("No meta factory found for feature 
'").append(feature).append("'");
+            if (jarHint != null) {
+                buffer.append("; this usually means that 
").append(jarHint).append(" is not in the classpath");
+            }
+            throw new OMException(buffer.toString());
         } else {
             return metaFactory;
         }