How to send an array of integers with JSON/RestDataSource

[kenandr]

Hi,

Is it possible to send an array with integers with RestDataSource ?

Currently I've done this:

public class XDataSource extends RestDataSource {
public XDataSource()
{
setDataFormat(DSDataFormat.JSON);
setJsonRecordXPath("/");

DataSourceIntegerField idsField = new DataSourceIntegerField("ids");
tripIdsField.setMultiple(true);

setFields(idsField);

// ... The rest of standard setup of the DataSource ..
}
}

When the server responds with the ID's I get the following error in SC Developer Console:

04:05:22,202 [ERROR] 13:12:43.956:XRP6:WARN:RestDataSource:XReportDS:XReportDS.ids: value: Array[20] failed on validator: {type: "isInteger", typeCastValidator: true, _generated: true, defaultErrorMessage: "Must be a whole number."}
com.smartgwt.client.core.JsObject$SGWT_WARN: 13:12:43.956:XRP6:WARN:RestDataSource:XReportDS:XReportDS.ids: value: Array[20] failed on validator: {type: "isInteger",
typeCastValidator: true,
_generated: true,
defaultErrorMessage: "Must be a whole number."} at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) 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.BrowserChannel.reactToMessages(BrowserChannel.java:1668) at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:401) at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:222) at java.lang.Thread.run(Thread.java:619)

So the array is not of type integer. That's correct, but the setMultiple method of DataSourceIntegerField should take care of that ?

[jhhartley]

Has this been resolved/answered? I'm running into an identical issue. An array of integer values in a JSON RestDataSource logs an ERROR, even though the DataSourceIntegerField is setMultiple(true).

[Isomorphic_Paul]

Can you post the complete DataSource definition plus a sample JSON fetch response you're attempting to work with?

Thanks

[jhhartley]

Well, I've determined that the fundamental handling of the integer array seems to work OK, in the sense that the multiple values encoded do show up in my multi-select. I just get a nasty validation-failed error message logged in the developer console. I wasted a bunch of my time trying to eliminate it:

[ERROR] [prototype_gwt] 16:41:31.067:XRP3:WARN:RestDataSource:isc_RestDataSource_1:isc_RestDataSource_1.assocId: value: Array[2] failed on validator: {type: "isInteger", typeCastValidator: true, _generated: true, defaultErrorMessage: "Must be a whole number."}

My hope is that this is just a logging issue, but my fear is that there will be some other subtle malfunction as a result that I just haven't noticed yet.

Here's the code for my test form:

	private Canvas createDSTestPanel() {
		DynamicForm form = new DynamicForm();
		form.setDataSource(formDataSource());	
		form.setAutoFetchData(true);
		
		FormItem idItem = new HiddenItem("id");
		FormItem nameItem  = new TextItem("name");
		
		SelectItem assocIdItem = new SelectItem("assocId","Associated Options");
		assocIdItem.setMultiple(true);
		assocIdItem.setOptionDataSource(optionDataSource());
		assocIdItem.setValueField("id");
		assocIdItem.setDisplayField("name");
		
		form.setItems(idItem, nameItem, assocIdItem);
		
		return form;
	}

	private RestDataSource formDataSource() {
		RestDataSource src = new RestDataSource();
		src.setDataURL("json/test.json");
		src.setDataFormat(DSDataFormat.JSON);
		src.setDataProtocol(DSProtocol.POSTPARAMS);
		src.addField(new DataSourceIntegerField("id"));
		src.addField(new DataSourceTextField("name"));
		DataSourceField assocIdField = new DataSourceIntegerField("assocId");
		assocIdField.setMultiple(true);
		src.addField(assocIdField);
		return src;
	}

	private RestDataSource optionDataSource() {
		RestDataSource optSrc = new RestDataSource();
		optSrc.setDataURL("json/options.json");
		optSrc.setDataFormat(DSDataFormat.JSON);
		optSrc.setDataProtocol(DSProtocol.POSTPARAMS);
		optSrc.addField(new DataSourceIntegerField("id"));
		optSrc.addField(new DataSourceTextField("name"));
		return optSrc;
	}

Here is test.json, with the array of integers on 'assocId':

{ "response" : { "status" : 0, "startRow" : 0, "endRow" : 0, "totalRows" : 1,
	"data" : [{
			"id" : 8456,
			"name" : "My Contents",
			"assocId" : [ 1, 3 ]
		}]
	}
}

And options.json:

{ "response" : { "status" : 0, "startRow" : 0, "endRow" : 3, "totalRows" : 4,
	"data" : [ { "id" : 1, "name" : "Option 1" },
		{ "id" : 2, "name" : "Option 2" },
		{ "id" : 3, "name" : "Option 3" },
		{ "id" : 4, "name" : "Option 4" }
		]
	}
}

[s.csaba]

Same problem here.
Workaround: try to use general DataSourceField instead of DataSourceIntegerField to eliminate the built-in validation warning.