RE: signatures help

1) Your Java method expects a Map not an Array.  To send a map you need to
send a JavaScript hash i.e {}, not a JavaScript array.
var sendThisToSever = {};
sendThisToServer["key1"] = "value1"

or:
var sendThisToServer = new Object();
sendThisToServer.key1 = "value1";

2) You do not need signatures since your map only contains Strings.  That
is just a warning message.  It is letting you know that DWR is assuming
that the contents of the Map  are Strings which in your case is correct.

Original Message:
-----------------
From: tyju tiui jckdnk111@...
Date: Wed, 23 Apr 2008 10:19:46 -0700 (PDT)
To: users@...
Subject: [dwr-user] signatures help


Hi,

I'm having trouble sending a remote array of strings to a DWR-exposed
method which expects a Map.

js:
var params = { 'myArr':["a", "b", "c"] };

java:
public class ParamActions{
    public static boolean storeParams(Map params){
        if(params.get("myArr").getClass().getClass().equals(Class.forName("[
Ljava.lang.String;"))){
            return true
        }else{
            return false;
        }
    }
}

When invoked by DWR, the java code always evaluates to false since the
Object returned by params.get("myArr") is a String and not a String[].
I found the following bug report describing a similar problem:
http://getahead.org/bugs/browse/DWR-96
It says the problem has been fixed in version 3M2 ... is this stable enough
to use?

Also, I see some warning in the DWR log talking about "Missing type info
for storeParams(1<0>). Assuming this is a map with String keys. Please add
to <signatures> in dwr.xml".

I added the following to my dwr.xml but I'm still getting the errors:

...
</allow>
  <signatures>
    <![CDATA[
        import java.util.Map;
        import test.dwr.ParamActions;
        ParamActions.storeParams(Map<String,[Ljava.lang.String;>);
    ]]>
  </signatures>
</dwr>

I'm hoping if I can get the signatures section setup correctly then maybe
my String[] will start magically working.

Thanks,

Ty



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