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**Isomorphic** · 3 Jun 2009, 16:45

You could get this if you had deleted the public/sc/system/schema area in smartgwtee.jar.

**sergeyb** · 3 Jun 2009, 18:14

where is smartgwtee.jar? I can't find it anywhere?

**sjivan** · 3 Jun 2009, 20:00

Are you using SmartGWT or SmartClient?

**sergeyb** · 4 Jun 2009, 09:19

I was able to resolve ClassCastException and JSP tag loaded datasource.
But when I try to get a handle to datasource, it returns null. Any idea?

DataSource dataSource = DataSource.get("UserDS");

**Isomorphic** · 4 Jun 2009, 09:41

Then the DataSource is still not loading. Look for other errors, and try matching the samples as closely as possible.

You still haven't clarified if you're using SmartClient or SmartGWT EE.

**sergeyb** · 4 Jun 2009, 09:48

I'm using SmartGWT EE
I'm looking at the examples and seems that I'm doing exactly same thing.
When jsp page that contains JSP tag is loaded, the following is printed on the page:

isc.DataSource.create({ ID:"UserDS", serverType:"generic", fields:[ {type:"text", title:"userName", primaryKey:true, name:"userName"}, {type:"text", title:"firstName", name:"firstName"}, {type:"text", title:"lastName", name:"lastName"}, {type:"text", title:"phone", name:"phone"}, {type:"text", title:"password", name:"password"}, {type:"text", title:"company", name:"company"}, {type:"text", title:"email", name:"email"}, {type:"text", title:"active", name:"active"} ] })

so, I assume that DataSource is being loaded.

**Isomorphic** · 4 Jun 2009, 10:31

The samples do not use a loadDS tag.

Look for this part of index.html:

Code:

<script src="sc/DataSourceLoader?dataSource= supplyItemHB"></script>

That's how DataSources are loaded. Be sure you are using the latest version (1.1).

**sergeyb** · 4 Jun 2009, 10:57

WARNING: No file found for: /sc/DataSourceLoader

where this url sc/DataSourceLoader maps to a servlet?
I don't see it in examples web.xml

**Isomorphic** · 4 Jun 2009, 10:59

Again, get the latest version (1.1).

**michael0101** · 17 Jul 2009, 14:05

Same issue

Hi, I have exactly the same problem.
I am using smartGWT EE 1.2 .

I think my problem is related to the following part in the web.xml of the sample (Basic Connector):

Code:

    <!-- The DataSourceLoader servlet returns Javascript representations of the dataSources whose  
         ID's are passed to it - it is an alternative to using the <loadDS> JSP tag -->  
    <servlet>  
        <servlet-name>DataSourceLoader</servlet-name>  
        <servlet-class>com.isomorphic.servlet.DataSourceLoader</servlet-class>  
    </servlet>

In my code, the line DataSource.get("worldDS") returns null, and I have the following warning [WARN] 404 - GET /MY_MODULE/sc/DataSourceLoader?dataSource=worldDS (127.0.0.1) 1432 bytes.

I looked in the javadoc of the server and I could not find the class com.isomorphic.servlet.DataSourceLoader. (But the others Servlet are present in com.isomorphic.servlet in the javadoc). Is the javadoc incomplete ?

Given the warning this class is surely missing from my project...is this class supposed to be in the smartgwtee.jar ? Is it missing from my JAR ?

**michael0101** · 21 Jul 2009, 06:55

Find the solution

Hello,

I found the solution in this documentation:

http://www.smartclient.com/docs/6.5.1/a/b/c/go.html#group..iscInstall

That was in fact exactly what I was looking for, how to deploy Smart Client in your Java environment.

**nix748** · 17 Aug 2009, 00:57

michael0101,
Can you brief what you did to resolve the problem? I am having the same problem, The URL you mentioned is not working.

thanks

**nix748** · 21 Aug 2009, 21:19

I got the solution,
I copied all libraries for time being from smartgwtee1.2/showcase/web-inf/lib to my project/web-inf/lib and that's all. It worked.

**shantzis62** · 29 Aug 2009, 23:00

Originally posted by sergeyb

I was able to resolve ClassCastException and JSP tag loaded datasource.
But when I try to get a handle to datasource, it returns null. Any idea?

DataSource dataSource = DataSource.get("UserDS");

Do you recall how exactly you solved this initial problem with the ClassCastException being thrown? I'm running into the same thing
and I'm stumped.

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ClassCastException during DataSource loading

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