ListGridField.setSortField() automatical convert to String

Smart GWT Technical Q&A
1

Hello all,

In my usecase I have to sort my table programmatically and after that, to change some fieldAttributeValues and “commit” them using updateData(Record)

        m_ListGrid.setSortField("ListGridField");
	ResultSet results = (ResultSet)       m_ListGrid.getDataAsRecordList();
	Record rec = null;
	for (int i=0;i<results.getLength();i++)
	{
		rec = results.get(i);
		rec.setAttribute("ListGridField", newValue());
		m_ListGrid.updateData(rec);
	}
	m_ListGrid.refreshFields();

My problem is that when I’m doing this an error appears, stating that a cast from Long to String cannot be operated.

Note: ListGridField is Integer type in DB

Does anybody know a fix for this problem or can you help me with a solution for saving the newValue to DB?

Thank you in advance,
Driftdone

2

Not enough information - see the FAQ for the information you should provide.

Also, wrong forum (we’ll move the thread).

3

I am using SmartGWT 2.4 with Google Chrome 12 or IE9.
The log error is the following:

10:16:18.588 [ERROR] [customds] 10:16:18.582:XRP9:WARN:RPCManager:java.lang.Long cannot be cast to java.lang.String, response: {operationId: "listing_tariff_system_update", clientContext: undef, context: Obj, transactionNum: 15, httpResponseCode: 200, httpResponseText: "//isc_RPCResponseStart-->[{queueStatus:-..."[170], xmlHttpRequest: [object XMLHttpRequest], transport: "xmlHttpRequest", status: -1, clientOnly: undef, httpHeaders: Obj, isStructured: true, callbackArgs: null, results: Obj, queueStatus: -1, isDSResponse: true, invalidateCache: false, data: "java.lang.Long cannot be cast to java.la..."[49]}
com.smartgwt.client.core.JsObject$SGWT_WARN: 10:16:18.582:XRP9:WARN:RPCManager:java.lang.Long cannot be cast to java.lang.String, response: {operationId: "listing_tariff_system_update", clientContext: undef, context: Obj, transactionNum: 15, httpResponseCode: 200, httpResponseText: "//isc_RPCResponseStart-->[{queueStatus:-..."[170], xmlHttpRequest: [object XMLHttpRequest], transport: "xmlHttpRequest", status: -1, clientOnly: undef, httpHeaders: Obj, isStructured: true, callbackArgs: null, results: Obj, queueStatus: -1, isDSResponse: true, invalidateCache: false, data: "java.lang.Long cannot be cast to java.la..."[49]}
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:105)
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:157)
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:281)
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:531)
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:352)
    at java.lang.Thread.run(Unknown Source)
4

That’s just a warning, not an error, and you haven’t provided code that would allow anyone to reproduce the problem (please revisit FAQ).

5

I edited the latest post, putting the correct error message and the actual code that triggers that error.

	saveButton.addClickHandler(new ClickHandler()
	{
		@Override
		public void onClick(ClickEvent event)
		{
			ResultSet results = (ResultSet)listGrid.getDataAsRecordList();
		
			Record rec = null;
			for (int i=0;i<results.getLength();i++)
			{
				rec = results.get(i);
				rec.setAttribute("field", newValue());
				listGrid.updateData(rec);
			}
			listGrid.refreshFields();
		}
	}
6

This isn’t runnable code. Again, if you think you’ve discovered a problem, you should post a minimal, runnable test case.