svn commit: r1088456 - /incubator/stanbol/branches/http-endpoint-refactoring/enhancer/jersey/src/main/java/org/apache/stanbol/enhancer/jersey/resource/EnginesRootResource.java

[ogrisel]

Author: ogrisel
Date: Mon Apr  4 00:48:27 2011
New Revision: 1088456

URL: http://svn.apache.org/viewvc?rev=1088456&view=rev
Log:
STANBOL-120: better handling of missing cache provider

Modified:
    
incubator/stanbol/branches/http-endpoint-refactoring/enhancer/jersey/src/main/java/org/apache/stanbol/enhancer/jersey/resource/EnginesRootResource.java

Modified: 
incubator/stanbol/branches/http-endpoint-refactoring/enhancer/jersey/src/main/java/org/apache/stanbol/enhancer/jersey/resource/EnginesRootResource.java
URL: 
http://svn.apache.org/viewvc/incubator/stanbol/branches/http-endpoint-refactoring/enhancer/jersey/src/main/java/org/apache/stanbol/enhancer/jersey/resource/EnginesRootResource.java?rev=1088456&r1=1088455&r2=1088456&view=diff
==============================================================================
--- 
incubator/stanbol/branches/http-endpoint-refactoring/enhancer/jersey/src/main/java/org/apache/stanbol/enhancer/jersey/resource/EnginesRootResource.java
 (original)
+++ 
incubator/stanbol/branches/http-endpoint-refactoring/enhancer/jersey/src/main/java/org/apache/stanbol/enhancer/jersey/resource/EnginesRootResource.java
 Mon Apr  4 00:48:27 2011
@@ -27,6 +27,7 @@ import javax.ws.rs.core.Response;
 import org.apache.clerezza.rdf.core.MGraph;
 import org.apache.clerezza.rdf.core.TripleCollection;
 import org.apache.clerezza.rdf.core.access.TcManager;
+import org.apache.clerezza.rdf.core.impl.SimpleMGraph;
 import org.apache.clerezza.rdf.core.serializedform.Serializer;
 import org.apache.stanbol.commons.web.base.ContextHelper;
 import org.apache.stanbol.commons.web.base.resource.BaseStanbolResource;
@@ -66,10 +67,15 @@ public class EnginesRootResource extends
         jobManager = 
ContextHelper.getServiceFromContext(EnhancementJobManager.class, context);
         tcManager = ContextHelper.getServiceFromContext(TcManager.class, 
context);
         serializer = ContextHelper.getServiceFromContext(Serializer.class, 
context);
-        EntityCacheProvider entityCacheProvider = 
ContextHelper.getServiceFromContext(
-            EntityCacheProvider.class, context);
-        if (entityCacheProvider != null) {
-            entityCache = entityCacheProvider.getEntityCache();
+        entityCache = new SimpleMGraph().getGraph();
+        try {
+            EntityCacheProvider entityCacheProvider = 
ContextHelper.getServiceFromContext(
+                EntityCacheProvider.class, context);
+            if (entityCacheProvider != null) {
+                entityCache = entityCacheProvider.getEntityCache();
+            }
+        } catch (NullPointerException e) {
+            // service lookup can raise null pointer exception, fall back to 
empty cache
         }
     }