Trouble with datasource.addData

[emnetdev]

I am attempting to learn how to use the add, remove, update features of datasources. Below is the code I am using and I am getting an error. Can anyone point me in the right direction?

My DataSource XML:

<DataSource serverType="sql" autoDeriveSchema="true" dbName="CSODatabaseLOCAL"
ID="UserViews"
schema="csorepository"
tableName="user_views">
	
    <fields>
	<field name="viewId" nativeName="view_id" type="int" primaryKey="true"/>
       	<field name="userId" nativeName="user_id" type="int"/>
       	<field name="cityId" nativeName="city_id" type="int"/>
       	<field name="viewName" nativeName="view_name" type="text" length="64"/>
       	<field name="viewSensors" nativeName="view_sensors" type="text" length="255"/>
       	<field name="viewStartDate" nativeName="view_start_date" type="datetime"/>
       	<field name="viewEndDate" nativeName="view_end_date" type="datetime"/>
       	<field name="isDefault" nativeName="is_default" type="bool" length="32"/>
    </fields>
		
    <operationBinding operationType="update" requires="false" />
    
    <operationBinding operationType="add" requires="" />
    
    <operationBinding operationType="remove" operationId="removeUserView" >
    	<whereClause>view_id = $criteria.viewId</whereClause>
    </operationBinding>

    <operationBinding operationType="fetch" operationId="fetchUserViews">
    	<whereClause>user_id = $criteria.userId AND city_id = $criteria.cityId</whereClause>
    </operationBinding>
		
</DataSource>

My test code to add the row:

final DataSource userViewDs = DataSource.get("UserViews");
try {
    Record r = new Record();
    r.setAttribute("userId", 111);
    r.setAttribute("cityId", 222);
    r.setAttribute("viewName", "My first view");
    r.setAttribute("viewSensors", "sens1,sens2");
    r.setAttribute("isDefault", false);
                    
     userViewDs.addData(r);
 } catch (Exception ex) {
    com.google.gwt.user.client.Window.alert(ex.getMessage());
 }

The exception is not very descriptive.

"(TypeError) _gwt$exception: <skipped>: Cannot read property 'getOrCreateJsObj' of null"

I understand it is saying there is a null point somewhere, but I do not see what I have done wrong.

[Blama]

Hi wriley,

my gut feeling says it is related to

<operationBinding operationType="add" requires="" />

Try to remove the line or at least requires="" and try again (clear cache before just in case).

Also you should replace com.google.gwt.user.client.Window.alert() with SC.say/warn(), but that is not related to the error.

Best regards
Blama