I have been evaluating GWT but have come up against a problem I cannot
solve/understand.
I have a little service method that returns a list of 'person data'
I am finding that whilst the server side take around zero milli-secs
to handle the query (100-200 rows) the client is taking seconds before
the AsyncCallback.onSuccess() callback fires.
I am guessing that GWT is taking an age to deserialise the response.
I cannot afford to wait 2 or 3 seconds to deserialise and then render
the response.
I am unsure what factors might be influencing the performance. Or
tuning/settings I might look at.
I imagine that populating a long grid (well a couple of hundred rows)
is something that must be fairly common and that I am doing something
wrong, or missing a trick.
Small sets of 10 rows come back fast enough, but the responsiveness
degrades proportionally to the number of rows returned ....
12 rows 139ms
40 rows 719ms
120 rows 2109ms
I like the benefits of being able to use the Java programming model
and toolset - but unless I can solve the perf issues I must look into
alternatives such as generating HTML on the server; ie becoming a more
classic JSP/HTML site and I really don't want to do this if I can
avoid it.
Help/advice gratefully accepted.
See API below.
John
My API looks like this..
// SERVICE INTERFACE
public interface ContactService extends RemoteService {
public Person[] findContactByName(String namePart);
}
// TRANSFER OBJECT
public class Person implements IsSerializable {
private static final long serialVersionUID = 1L;
String personId;
String firstName;
String lastName;
String email;
String phone;
bunch of Getter/Setters - code omited.
}
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