JavaAdapter serialization contribution from Kemal Bayram.

js/rhino/src/org/mozilla/javascript/JavaAdapter.java

@@ -121,7 +121,10 @@ public class JavaAdapter extends ScriptableObject {
         ClassSignature sig = new ClassSignature(superClass, interfaces, obj);
         Class adapterClass = (Class) generatedClasses.get(sig);
         if (adapterClass == null) {
-            String adapterName = "adapter" + serial++;
+            String adapterName;
+            synchronized (generatedClasses) {
+                adapterName = "adapter" + serial++;
+            }
             adapterClass = createAdapterClass(cx, obj, adapterName, 
                                               superClass, interfaces, 
                                               null, null);
@@ -134,6 +137,44 @@ public class JavaAdapter extends ScriptableObject {
         return getAdapterSelf(adapterClass, adapter);
     }
 
+    // Needed by NativeJavaObject de-serializer
+    
+    public static Object createAdapterClass(Class superClass, 
+                                            Class[] interfaces, 
+                                            Scriptable obj, Scriptable self)
+	  throws ClassNotFoundException
+    {
+        ClassSignature sig = new ClassSignature(superClass, interfaces, obj);
+        Class adapterClass = (Class) generatedClasses.get(sig);
+        if (adapterClass == null) {
+            String adapterName;
+            synchronized (generatedClasses) {
+                adapterName = "adapter" + serial++;
+            }
+            try {
+                adapterClass = createAdapterClass(Context.enter(), obj, 
+                                                  adapterName, superClass, 
+                                                  interfaces, null, null);
+                generatedClasses.put(sig, adapterClass);
+            } finally {
+                Context.exit();
+            }
+        }
+
+        try {    
+            Class[] ctorParms = { Scriptable.class, Scriptable.class };
+            Object[] ctorArgs = { obj, self };
+
+            return adapterClass.getConstructor(ctorParms).newInstance(ctorArgs);
+        } catch(InstantiationException e) {
+        } catch(IllegalAccessException e) {
+        } catch(InvocationTargetException e) {
+        } catch(NoSuchMethodException e) {
+        }
+
+        throw new ClassNotFoundException("adapter");
+    }
+
     public static Class createAdapterClass(Context cx, Scriptable jsObj,
                                            String adapterName, Class superClass, 
                                            Class[] interfaces, 
@@ -158,6 +199,7 @@ public class JavaAdapter extends ScriptableObject {
         
         String superName = superClass.getName().replace('.', '/');
         generateCtor(cfw, adapterName, superName);
+        generateSerialCtor(cfw, adapterName, superName);
         if (scriptClassName != null)
             generateEmptyCtor(cfw, adapterName, superName, scriptClassName);
         
@@ -380,6 +422,33 @@ public class JavaAdapter extends ScriptableObject {
         cfw.stopMethod((short)20, null); // TODO: magic number "20"
     }
     
+    private static void generateSerialCtor(ClassFileWriter cfw, String adapterName, 
+                                     String superName) 
+    {
+        cfw.startMethod("<init>", 
+                        "(Lorg/mozilla/javascript/Scriptable;Lorg/mozilla/javascript/Scriptable;)V",
+                        ClassFileWriter.ACC_PUBLIC);
+        
+        // Invoke base class constructor
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.add(ByteCode.INVOKESPECIAL, superName, "<init>", "()", "V");
+        
+        // Save parameter in instance variable "delegee"
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.add(ByteCode.ALOAD_1);  // first arg
+        cfw.add(ByteCode.PUTFIELD, adapterName, "delegee", 
+                "Lorg/mozilla/javascript/Scriptable;");
+
+        // save self
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.add(ByteCode.ALOAD_2);  // second arg
+        cfw.add(ByteCode.PUTFIELD, adapterName, "self", 
+                "Lorg/mozilla/javascript/Scriptable;");
+
+        cfw.add(ByteCode.RETURN);
+        cfw.stopMethod((short)20, null); // TODO: magic number "20"
+    }
+    
     private static void generateEmptyCtor(ClassFileWriter cfw, String adapterName, 
                                           String superName, String scriptClassName) 
     {

js/rhino/src/org/mozilla/javascript/NativeJavaArray.java

@@ -22,6 +22,7 @@
  * Norris Boyd
  * Frank Mitchell
  * Mike Shaver
+ * Kemal Bayram
  *
  * Alternatively, the contents of this file may be used under the
  * terms of the GNU Public License (the "GPL"), in which case the
@@ -38,6 +39,7 @@
 package org.mozilla.javascript;
 
 import java.lang.reflect.Array;
+import java.io.*;
 
 /**
  * This class reflects Java arrays into the JavaScript environment.
@@ -152,4 +154,26 @@ public class NativeJavaArray extends NativeJavaObject {
     int length;
     Class cls;
     Scriptable prototype;
+    
+    public void writeExternal(ObjectOutput out) 
+        throws IOException 
+    {
+        super.writeExternal(out);
+
+        out.writeObject(array);
+        out.writeInt(length);
+        out.writeObject(cls.getName());
+        out.writeObject(prototype);
+    }
+    
+    public void readExternal(ObjectInput in) 
+        throws IOException, ClassNotFoundException 
+    {
+        super.readExternal(in);
+
+        array = in.readObject();
+        length = in.readInt();
+        cls = Class.forName((String)in.readObject());
+        prototype = (Scriptable)in.readObject();
+    }    
 }

js/rhino/src/org/mozilla/javascript/NativeJavaClass.java

@@ -23,6 +23,7 @@
  * Frank Mitchell
  * Mike Shaver
  * Kurt Westerfeld
+ * Kemal Bayram
  * 
  * Alternatively, the contents of this file may be used under the
  * terms of the GNU Public License (the "GPL"), in which case the
@@ -40,6 +41,7 @@ package org.mozilla.javascript;
 
 import java.lang.reflect.*;
 import java.util.Hashtable;
+import java.io.*;
 
 /**
  * This class reflects Java classes into the JavaScript environment, mainly
@@ -272,4 +274,18 @@ public class NativeJavaClass extends NativeJavaObject implements Function {
 
     // beard: need a scope for finding top-level prototypes.
     private Scriptable parent;
+    
+    public void writeExternal(ObjectOutput out) throws IOException {    
+        super.writeExternal(out);
+        out.writeObject(parent);
+    }
+    
+    public void readExternal(ObjectInput in) 
+        throws IOException, ClassNotFoundException 
+    {
+        super.readExternal(in);
+        parent = (Scriptable)in.readObject();
+        fieldAndMethods = members.getFieldAndMethodsObjects(this, javaObject, 
+                                                            true);
+    }    
 }

js/rhino/src/org/mozilla/javascript/NativeJavaObject.java

@@ -23,6 +23,7 @@
  * Igor Bukanov
  * Frank Mitchell
  * Mike Shaver
+ * Kemal Bayram
  *
  * Alternatively, the contents of this file may be used under the
  * terms of the GNU Public License (the "GPL"), in which case the
@@ -38,6 +39,7 @@
 
 package org.mozilla.javascript;
 
+import java.io.*;
 import java.lang.reflect.*;
 import java.util.Hashtable;
 import java.util.Enumeration;
@@ -53,7 +55,10 @@ import java.util.Enumeration;
  * @see NativeJavaClass
  */
 
-public class NativeJavaObject implements Scriptable, Wrapper {
+public class NativeJavaObject implements Scriptable, Wrapper, Externalizable {
+
+    public NativeJavaObject() {
+    }
 
     public NativeJavaObject(Scriptable scope, Object javaObject, 
                             JavaMembers members) 
@@ -68,6 +73,7 @@ public class NativeJavaObject implements Scriptable, Wrapper {
     {
         this.parent = scope;
         this.javaObject = javaObject;
+        this.staticType = staticType;
         Class dynamicType = javaObject != null ? javaObject.getClass()
             : staticType;
         members = JavaMembers.lookupClass(scope, dynamicType, staticType);
@@ -918,9 +924,82 @@ public class NativeJavaObject implements Scriptable, Wrapper {
 
     protected Object javaObject;
     protected JavaMembers members;
+    protected Class staticType;
     private Hashtable fieldAndMethods;
     static Class jsObjectClass;
     static Constructor jsObjectCtor;
     static Method jsObjectGetScriptable;
+    
+    public void writeExternal(ObjectOutput out) 
+        throws IOException
+    {
+        out.writeObject(prototype);
+        out.writeObject(parent);
+        out.writeObject(staticType != null ? staticType.getClass().getName() 
+                                           : null);
+
+        if (javaObject != null) {
+            Class joClass = javaObject.getClass();
+            if (joClass.getName().startsWith("adapter")) {
+
+                out.writeBoolean(true);
+                out.writeObject(joClass.getSuperclass().getName());
+
+                Class[] interfaces = joClass.getInterfaces();
+                String[] interfaceNames = new String[interfaces.length];
+
+                for (int i=0; i < interfaces.length; i++)
+                    interfaceNames[i] = interfaces[i].getName();
+                  
+                out.writeObject(interfaceNames);
+
+                try {
+                    out.writeObject(joClass.getField("delegee").get(javaObject));
+                    out.writeObject(joClass.getField("self").get(javaObject));
+                } catch (IllegalAccessException e) {
+                } catch (NoSuchFieldException e) {
+                }
+
+            } else {
+                out.writeBoolean(false);
+                out.writeObject(javaObject);
+            }
+        } else {
+            out.writeBoolean(false);
+            out.writeObject(null);
+        }
+    }
+    
+    public void readExternal(ObjectInput in) 
+        throws IOException, ClassNotFoundException
+    {
+        prototype = (Scriptable)in.readObject();
+        parent = (Scriptable)in.readObject();
+
+        String className = (String)in.readObject();
+        staticType = className != null ? Class.forName(className) : null;
+
+        if (in.readBoolean()) {
+            Class superclass = Class.forName((String)in.readObject());
+
+            String[] interfaceNames = (String[])in.readObject();
+            Class[] interfaces = new Class[interfaceNames.length];
+                    
+            for (int i=0; i < interfaceNames.length; i++)
+                interfaces[i] = Class.forName(interfaceNames[i]);
+                
+            javaObject = JavaAdapter.createAdapterClass(superclass, interfaces, 
+                (Scriptable)in.readObject(), (Scriptable)in.readObject());
+        } else {
+            javaObject = in.readObject();
+        }
+
+        Class dynamicType = javaObject != null ? javaObject.getClass() 
+                                               : staticType;
+        members = JavaMembers.lookupClass(parent, dynamicType, staticType);
+        fieldAndMethods = members.getFieldAndMethodsObjects(this, javaObject, 
+                                                            false);
+    }
+   
 }