Add static block to warn if the wrong EOAttribute class is loaded bef…

…ore this framework is loaded.
wocommunity · Apr 30, 2012 · 52407b9 · 52407b9
1 parent 780153a
commit 52407b9
Showing 1 changed file with 38 additions and 22 deletions.
diff --git a/Frameworks/EOF/ERAttributeExtension/Sources/er/attributeextension/ERAttributeExtension.java b/Frameworks/EOF/ERAttributeExtension/Sources/er/attributeextension/ERAttributeExtension.java
@@ -5,28 +5,44 @@
 import er.extensions.ERXExtensions;
 import er.extensions.ERXFrameworkPrincipal;
 
+@SuppressWarnings("unchecked")
 public class ERAttributeExtension extends ERXFrameworkPrincipal {
-	public static final Class<?>[] REQUIRES = new Class[] { ERXExtensions.class };
-
-	private static final Logger log = Logger.getLogger(ERAttributeExtension.class);
-
-	protected static ERAttributeExtension sharedInstance;
-
-	// Registers the class as the framework principal
-	static {
-		log.debug("Static Initializer for ERAttributeExtension");
-		setUpFrameworkPrincipalClass(ERAttributeExtension.class);
-	}
-
-	public static ERAttributeExtension sharedInstance() {
-		if (sharedInstance == null) {
-			sharedInstance = sharedInstance(ERAttributeExtension.class);
-		}
-		return sharedInstance;
-	}
-
-	@Override
-	public void finishInitialization() {
-	}
 
+    public static final Class<?>[] REQUIRES = new Class[] { ERXExtensions.class };
+
+    private static final Logger log = Logger.getLogger(ERAttributeExtension.class);
+
+    protected static ERAttributeExtension sharedInstance;
+
+    // Registers the class as the framework principal
+    static {
+        log.debug("Static Initializer for ERAttributeExtension");
+        setUpFrameworkPrincipalClass(ERAttributeExtension.class);
+    }
+
+    static {
+        java.lang.reflect.Method valueFactoryClassNameMethod = null;
+        try {
+            Class eoAttributeClass = Class.forName("com.webobjects.eoaccess.EOAttribute");
+            valueFactoryClassNameMethod = eoAttributeClass.getMethod("valueFactoryClassName", (java.lang.Class[])null);
+        } catch (java.lang.ClassNotFoundException cnfe) {
+            log.error("Cannot find EOAttribute class. Something is very wrong.");
+        } catch (java.lang.NoSuchMethodException nsme) {
+            valueFactoryClassNameMethod = null;
+        }
+        if (valueFactoryClassNameMethod == null)
+            log.error("The ERAttributeExtension framework requires the Project Wonder version of the EOAttribute class and "+
+                      "that does not seem to be the version of the class which is loaded first in the classpath. Examine your build "+
+                      "path to ensure that the Project Wonder frameworks occur before the Apple frameworks.");
+    }
+
+    public static ERAttributeExtension sharedInstance() {
+        if (sharedInstance == null) {
+            sharedInstance = sharedInstance(ERAttributeExtension.class);
+        }
+        return sharedInstance;
+    }
+
+    @Override
+    public void finishInitialization() {}
 }