r9698 - in helma-ng/trunk: modules/helma src/org/helma/javascript

Author: hannes
Date: 2009-05-04 13:52:17 +0200 (Mon, 04 May 2009)
New Revision: 9698

Modified:
   helma-ng/trunk/modules/helma/system.js
   helma-ng/trunk/src/org/helma/javascript/RhinoEngine.java
Log:
Add asJavaObject() to RhinoEngine and helma/system to access strings as java.lang.String without creating a new instance.

Details at http://dev.helma.org/trac/helma/changeset/9698

Modified: helma-ng/trunk/modules/helma/system.js
===================================================================
--- helma-ng/trunk/modules/helma/system.js	2009-05-04 09:07:23 UTC (rev 9697)
+++ helma-ng/trunk/modules/helma/system.js	2009-05-04 11:52:17 UTC (rev 9698)
@@ -6,6 +6,7 @@
 
 export('addHostObject',
         'addRepository',
+        'asJavaObject',
         'createSandbox',
         'evaluate',
         'extendJavaClass',
@@ -59,6 +60,18 @@
 }
 
 /**
+ * Get a wrapper for an object that exposes it as Java object to JavaScript.
+ * This is useful for accessing strings and other primitives as their
+ * java.lang.* counterparts from JavaScript using the existing instance rather
+ * than allocating a new object via new java.lang.Foo() constructor.
+ * @param object an object
+ * @return the object wrapped as native java object
+ */
+function asJavaObject(object) {
+    return getRhinoEngine().asJavaObject(object);
+}
+
+/**
  * Get the Rhino optimization level for the current thread and context.
  * The optimization level is an integer between -1 (interpreter mode)
  * and 9 (compiled mode, all optimizations enabled). The default level

Modified: helma-ng/trunk/src/org/helma/javascript/RhinoEngine.java
===================================================================
--- helma-ng/trunk/src/org/helma/javascript/RhinoEngine.java	2009-05-04 09:07:23 UTC (rev 9697)
+++ helma-ng/trunk/src/org/helma/javascript/RhinoEngine.java	2009-05-04 11:52:17 UTC (rev 9698)
@@ -656,6 +656,21 @@
         return loader;
     }
 
+    /**
+     * Get a wrapper for an object that exposes it as Java object to JavaScript.
+     * This is useful for accessing strings and other primitives as their
+     * java.lang.* counterparts from JavaScript using the existing instance rather
+     * than allocating a new object via new java.lang.Foo() constructor.
+     * @param object an object
+     * @return the object wrapped as native java object
+     */
+    public Object asJavaObject(Object object) {
+        if (object instanceof Wrapper) {
+            return object;
+        }
+        return wrapFactory.wrapAsJavaObject(Context.getCurrentContext(), topLevelScope, object, null);
+    }
+
     public WrapFactory getWrapFactory() {
         return wrapFactory;
     }