Subj : E4X; assigning an XMLList to a property of an XML object
To   : netscape.public.mozilla.jseng
From : Martin Honnen
Date : Sun Apr 17 2005 07:13 pm


Should it be possible to assign an XMLList to the property of an XML object?

I have the simple test case

var god = <god><name>Kibo</name></god>;
print(god);

god.name = <><prename>James</prename><nickname>Kibo</nickname></>;
print(god);

which runs fine in Spidermonkey resulting in the output

<god>
   <prename>James</prename>
   <nickname>Kibo</nickname>
</god>

meaning Spidermonkey replaces the <name> element with the elements in 
the XMLList but Rhino throws an error complaining

uncaught JavaScript runtime exception: TypeError : Can't 
move/copy/insert a whole document.

The error is accompanied by a stack trace going down into XML beans from 
Apache:

java.lang.IllegalArgumentException: Can't move/copy/insert a whole document.
         at org.apache.xmlbeans.impl.store.Splay.complain(Splay.java:833)
         at 
org.apache.xmlbeans.impl.store.Splay.checkInsertionValidity(Splay.java:867)
         at 
org.apache.xmlbeans.impl.store.Cursor.copyXmlImpl(Cursor.java:2446)
         at org.apache.xmlbeans.impl.store.Cursor.copyXml(Cursor.java:2410)
         at org.mozilla.javascript.xmlimpl.XML.copy(XML.java:711)
         at org.mozilla.javascript.xmlimpl.XML.moveSrcToDest(XML.java:661)
         at org.mozilla.javascript.xmlimpl.XML.insertChild(XML.java:759)
         at org.mozilla.javascript.xmlimpl.XML.doPut(XML.java:1001)
         at org.mozilla.javascript.xmlimpl.XML.putXMLProperty(XML.java:1327)
         at 
org.mozilla.javascript.xmlimpl.XMLObjectImpl.ecmaPut(XMLObjectImpl.java:233)
         at 
org.mozilla.javascript.ScriptRuntime.setObjectProp(ScriptRuntime.java
:1428)
         at 
org.mozilla.javascript.ScriptRuntime.setObjectProp(ScriptRuntime.java:1420)
         at 
org.mozilla.javascript.Interpreter.interpret(Interpreter.java:2753)
         at 
org.mozilla.javascript.Interpreter.interpret(Interpreter.java:2164)
         at 
org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:140)
         at 
org.mozilla.javascript.InterpretedFunction.exec(InterpretedFunction.j
ava:149)
         at org.mozilla.javascript.Context.evaluateReader(Context.java:1251)
         at 
org.mozilla.javascript.tools.shell.Main.evaluateScript(Main.java:443)

         at 
org.mozilla.javascript.tools.shell.Main.processFileSecure(Main.java:4
27)
         at 
org.mozilla.javascript.tools.shell.Main.processFile(Main.java:364)
         at org.mozilla.javascript.tools.shell.Global.load(Global.java:171)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
         at java.lang.reflect.Method.invoke(Unknown Source)
         at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:174)
         at 
org.mozilla.javascript.FunctionObject.call(FunctionObject.java:393)
         at 
org.mozilla.javascript.Interpreter.interpret(Interpreter.java:3026)
         at 
org.mozilla.javascript.Interpreter.interpret(Interpreter.java:2164)
         at 
org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:140)
         at 
org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:304)
         at 
org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:2769)

but I have the latest XML Beans 1.0.4 from Apache.

Should I file a bug on Rhino?


-- 

	Martin Honnen
	http://JavaScript.FAQTs.com/

.