For a particular GWT module, I'm able to solve a problem in compiled mode
by manipulating the JS object representing the Java object. (Specifically,
I need to clone the object, so I simply create a new JS object, copy the
properties from the original JS object, and assign a new hash value.) I've
tested this an it works OK.
Since that approach (that I use in compiled mode) doesn't work in Dev Mode,
I want to use Object.clone(), which is available in Dev Mode, to perform
the clone operation. However, I'm not sure how to accomplish this as every
approach I try hits a problem.
- I can't seem to use deferred binding (i.e. GWT.create() and "replace
with" in the module gwt.xml file), for two reasons:
1. Even in Dev Mode, when I replace a class using "replace with", the
class I swap in seems not to be able to use JRE-only methods, such as
reflection or Object.clone. I get an error that the "source code for the
method is not available". I don't want this class compiled, but it seems
to want to compile it to JS.
2. If I solve #1, then I have to figure out how to get the "replace
with" to be conditional based on being in dev mode. I'm using ant to
build
the compiled-mode stuff and I'm using Eclipse to run dev mode. Is there
way to make this automatic so I can use the same module gwt.xml in
Eclipse
and for an ant build? I guess I'd need an ant property that
automatically
is set by compiled but not by development mode, or vice versa?
- I also tried simply using new Foo() (rather than GWT.create() and
deferred binding), placing the JS-copying/GWT-compile-friendly version of
Foo in the normal location. This works for GWT compiled mode obviously.
Then for Dev Mode, I add a new source directory to the class path in
Eclipse and stick a different class Foo there that uses the JRE-only APIs
(such as Object.clone). However, this hits the same problem as deferred
binding - I still get an error that "the source code is not available" for
various APIs I use in that version of Foo (e.g. reflection APIs).
Right now, I've managed to use the Eclipse expression panel to manually
load the JRE-version of Foo I mentioned above (in the special class path
segment). So I know it's possible for it to coexist with other Dev Mode
classes, but how do I load it programmatically as part of starting GWT
DevMode class?
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