Upgrading version to 6.1 JSExpression cannot be cast to java.lang.Long

[zsolt.purgel]

Hi Isomorphic,

While trying to upgrade Smart GWT from 5.0 to 6.1 we got the following error:

java.lang.ClassCastException: com.isomorphic.js.JSExpression cannot be cast to java.lang.Long
at com.isomorphic.rpc.RPCManager.parseRequest(RPCManager.java:2480)
at com.isomorphic.rpc.RPCManager.<init>(RPCManager.java:435)
at com.isomorphic.rpc.RPCManager.<init>(RPCManager.java:415)
at com.isomorphic.servlet.IDACall.processRequest(IDACall.java:147)
at com.isomorphic.servlet.IDACall._processRequest(IDACall.java:119)
at com.isomorphic.servlet.IDACall.doPost(IDACall.java:79)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at com.isomorphic.servlet.BaseServlet.service(BaseServlet.java:176)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)


After some debugging, for the same input, snippet:
<transaction xmlns:xsi="http://www.w3.org/2000/10/XMLSchema-instance" xsi:type="xsd:Object">
<transactionNum xsi:type="xsd:long">0</transactionNum>
<operations xsi:type="xsd:List">
...

the 5.0 version transforms transactionNum into a Long type, but in 6.1 it is JSExpression.

Checking the RPCManager class the problematic line is:
RPCManager.java:1615 Long transactionNum = (Long)this.transaction.get("transactionNum");


Do you have a recommendation on how to move forward with the issue please?

Regards,
Zsolt

[Blama]

Hi zsolt.purgel,

did you double check that your JS code and your Server code use the same framework version, so both 6.1 in your case?
Also, if I were you, I'd try migrating to current 13.0p or even 13.1d (depending on how long you think your migration will take). Why migrate from one very old version to a slightly less old version?

Best regards
Blama

[zsolt.purgel]

Hi Blama,

In the request in the browser I can see:

... = I deleted the value here

http://127.0.0.1:8080/.../sc/IDACall......&isc_rpc=1&isc_v=v11.1p_2024-02-02&isc_xhr=1

Does this mean that on the client side the version also correct?

This is the first time for me to upgrading the framework. thought I would have less problems since it is only 1 version jump..

[Blama]

Hi zsolt.purgel,

I'd say your client side is 6.1/11.1, but those have been no longer supported for a long time, see here.
A big update might be more work, but you'll also get a lot more features (see blog entries for new versions) and more importantly Isomorphic is more likely to address an issue if it happens in a supported version.

Best regards
Blama

[Isomorphic]

As Blama has pointed out, and as we pointed out yesterday, you are currently trying to upgrade to a nearly 7-year-old version that has be de-supported for a year. This does not make sense, is a waste of time, and you will not receive further help from Isomorphic Support if you continue on this path (that's what it means when a version is de-supported).

As far as the actual problem, likely you would have the same issues upgrading to 13.0 or 13.1, as it looks like you may be replacing random files instead of following the installation instructions. Do not skip steps, and you will not have problems like this, and your other thread today.