Hi all,
I face a very strange behavior on requestFactory with GWT-2.3.
Sometimes, java.util.Set<T> collections are not deserialized as expected
(java.util.List<T> works well). Some elements are missing.
Here's the code that illustrates the problem :
// ----------------------------------
// ----------- client side code
// ----------------------------------
@Service(value = MyService.class, locator = MyLocator.class)
public interface MyRequest extends RequestContext {
Request<MyObjectProxy> getMyObject(int count);
}
@ProxyFor(value = MyObject.class)
public interface MyObjectProxy extends ValueProxy {
int getExpectedSize();
Set<StringContainerProxy> getStringContainers();
}
@ProxyFor(value = StringContainer.class)
public interface StringContainerProxy extends ValueProxy {
String getString();
}
// ----------------------------------
// ------------ server side code
// ----------------------------------
public class MyLocator implements ServiceLocator {
@Override
public Object getInstance(final Class<?> clazz) { return new
MyService(); }
}
public class MyService {
public MyObject getMyObject(int count) {
final Set<StringContainer> stringContainers = new
HashSet<StringContainer>();
for (int i = 0; i < count; i++) {
stringContainers.add(new StringContainer(String.valueOf(i)));
}
return new MyObject(stringContainers.size(), stringContainers);
}
}
public class MyObject {
private final int expectedSize;
private final Set<StringContainer> stringContainers;
public MyObject(int expectedSize, Set<StringContainer> stringContainers)
{ this.expectedSize = expectedSize; this.stringContainers =
stringContainers; }
public int getExpectedSize() { return expectedSize; }
public Set<StringContainer> getStringContainers() { return
stringContainers; }
}
public class StringContainer {
private final String string;
public StringContainer(String string) { this.string = string; }
public String getString() { return string; }
}
// ----------------------------------
// ------------ entry point that show different sizes
// ----------------------------------
public class MainPage implements EntryPoint {
public void onModuleLoad()
{
final ClientFactory clientFactory = GWT.create(ClientFactory.class);
clientFactory.init();
call(clientFactory, 0);
}
private void call(final ClientFactory clientFactory, final int i)
{
if (i > 100) {
return;
}
clientFactory.getRequestFactory().myRequest().getMyObject(i).fire(new
Receiver<MyObjectProxy>() {
@Override
public void onSuccess(MyObjectProxy response) {
RootPanel.get().add(new HTML(response.getExpectedSize() + "
" + response.getStringContainers().size()));
call(clientFactory, i + 1);
}
});
}
}
Here's the results for the 30 first requests (left is the expected size,
right is the real size) :
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 4 // problems start here...
13 4
14 4
15 4
16 4
17 4
18 4
19 4
20 4
21 4
22 4
23 9
24 10
25 11
26 12
27 13
28 14
29 14
30 14
Using java.util.List instead of java.util.Set resolves the problem.
Did i miss something ?
Alexandre.
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