Hello,
I've written a nice little generator to generate Overlay Types for
mementos (Rails-GWT interop), however I kept encountering a strange
exception any time I wanted to cast (or use in any way) a
JavaScriptObject to the generated class. The generated output was as
follows: ( gwt-mac-1.5.3 )
package hu.thepaw.presskit.client.worksheets;
public class OrderSheetJsonMemento extends
com.google.gwt.core.client.JavaScriptObject {
protected OrderSheetJsonMemento(){} // Necessary, since Composer
doesn't allow to set the access flags flags for the generated class
public final native String getdeadline() /*-{ return
this.deadline; }-*/;
public final native String getcreated_at() /*-{ return
this.created_at; }-*/;
/* ...BLAH-BLAH... */
}
Now each time the object is used is made:
JavaScriptObject mementoJSO=...
OrderSheetJsonMemento memento = mementoJSO.cast();
I get an exception (both hosted and deployed mode).
[ERROR] Uncaught exception escaped
java.lang.ClassFormatError: Illegal method name "<init>$" in class
hu/thepaw/presskit/client/worksheets/OrderSheetJsonMemento
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
at java.lang.ClassLoader.defineClass(ClassLoader.java:520)
at
com.google.gwt.dev.shell.CompilingClassLoader.findClass
(CompilingClassLoader.java:593)
at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
at
hu.thepaw.presskit.client.worksheets.OrderSheetStoreImplementation.assignFromMemento
(transient source for
hu.thepaw.presskit.client.worksheets.OrderSheetStoreImplementation:67)
...BLAH-BLAH..
After a few hours of debugging it, I copied the generated file (from
the path specified by -gen) into the original classpath, the problem
disappears. All other generated code (including native methods in
"normal" (non-overlay) classes) works fine.
My guess is that some part of the transformation of Overlay Types is
done only prior to code generation. I am trying to fix this, however I
would like to ask the help of you fine gwt developers ( :) ) too: I
will be looking into the compiler's JSNI generator for my answers, if
anyone has any suggestions, please answer to this thread....
ps: I've already submitted a ticket for this:
http://code.google.com/p/google-web-toolkit/issues/detail?id=3383&can=4
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