Close request-based WebappDaoFactory instances.

webapp/src/edu/cornell/mannlib/vitro/webapp/dao/ModelAccess.java

@@ -293,6 +293,18 @@ public class ModelAccess {
 		}
 	}
 
+	// ----------------------------------------------------------------------
+	// Close all locally stored models, WADFs, etc.
+	// ----------------------------------------------------------------------
+
+	public void close() {
+		if (this.scope == Scope.REQUEST) {
+			for (WebappDaoFactory wadf: factoryMap.values()) {
+				wadf.close();
+			}
+		}
+	}
+
 	// ----------------------------------------------------------------------
 	// Helper classes
 	// ----------------------------------------------------------------------

webapp/src/edu/cornell/mannlib/vitro/webapp/filters/RequestModelsPrep.java

@@ -113,6 +113,7 @@ public class RequestModelsPrep implements Filter {
 			try {
 				setUpTheRequestModels(rdfService, req);
 				filterChain.doFilter(req, resp);
+				tearDownTheRequestModels(req);
 			} finally {
 				rdfService.close();
 			}
@@ -384,6 +385,10 @@ public class RequestModelsPrep implements Filter {
 	    return map;
 	}
 
+	private void tearDownTheRequestModels(HttpServletRequest req) {
+		ModelAccess.on(req).close();
+	}
+
 	@Override
 	public void destroy() {
 		// Nothing to destroy