From: Roland Haeder <roland@mxchange.org>
Date: Wed, 19 Aug 2015 12:43:12 +0000 (+0200)
Subject: Added debug message
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=d5375cc4792b6ba4752119f3664c0caa006ddf40;p=jcore.git

Added debug message
Signed-off-by:Roland Häder <roland@mxchange.org>
---

diff --git a/src/org/mxchange/jcore/database/frontend/BaseDatabaseFrontend.java b/src/org/mxchange/jcore/database/frontend/BaseDatabaseFrontend.java
index ca318f2..7de1749 100644
--- a/src/org/mxchange/jcore/database/frontend/BaseDatabaseFrontend.java
+++ b/src/org/mxchange/jcore/database/frontend/BaseDatabaseFrontend.java
@@ -201,22 +201,25 @@ public abstract class BaseDatabaseFrontend extends BaseFrameworkSystem implement
 	protected void initBackend () throws UnsupportedDatabaseBackendException, SQLException {
 		// Trace message
 		this.getLogger().trace("CALLED!"); //NOI18N
-		
+
 		// Try it
 		try {
 			// Try to get get instance from factory
 			DatabaseBackend backend = BackendFactory.createInstance(this);
-			
+
+			// Debug message
+			this.getLogger().debug(MessageFormat.format("backend={0}", backend));
+
 			// Try to run a connect on it
 			backend.connectToDatabase();
-			
+
 			// All fine so far, then set it here
 			this.setBackend(backend);
 		} catch (final ClassNotFoundException | NoSuchMethodException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
 			// Continue to throw
 			throw new UnsupportedDatabaseBackendException(ex);
 		}
-		
+
 		// Trace message
 		this.getLogger().trace("EXIT!"); //NOI18N
 	}
diff --git a/src/org/mxchange/jcore/factory/database/backend/BackendFactory.java b/src/org/mxchange/jcore/factory/database/backend/BackendFactory.java
index 821779b..5e16166 100644
--- a/src/org/mxchange/jcore/factory/database/backend/BackendFactory.java
+++ b/src/org/mxchange/jcore/factory/database/backend/BackendFactory.java
@@ -48,6 +48,12 @@ public class BackendFactory extends BaseFrameworkSystem {
 		// Trace message
 		factory.getLogger().trace(MessageFormat.format("frontend={0} - CALLED!", frontend)); //NOI18N
 
+		// frontend must be set
+		if (frontend == null) {
+			// Is null
+			throw new NullPointerException("frontend is null");
+		}
+
 		// Get property
 		String className = factory.getProperty("database.backend.class"); //NOI18N