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February 7th, 2014, 05:28 PM
#9
So in GWT we are first creating the client and storing it in a GWT JSO variable then passing the JSO subscription list to it (The JSO client) and calling subscribe.
private JavaScriptObject client;
...
this.client = this.createClient();
...
client.subscribe(grid);
...
private native JavaScriptObject createClient() /*-{
var client = new $wnd.Lightstreamer.LightstreamerClient(); ;
return client;
}-*/;
public void subscribe(LDFieldsSubscription sub) {
if (this.client == null) {
throw new IllegalStateException("LightstreamerClient failed to initialize properly");
}
this.subscribe(sub.getSubscription());
}
private native void subscribe(JavaScriptObject sub) /*-{
this.@com.company.project.application.client.ui.Li ghtstreamerClient::client.subscribe(sub);
}-*/;
private native JavaScriptObject initSubscription(String[] itemList,
String[] fieldList, String subscriptionMode) /*-{
var that = this;
mySub = null;
mySub = new Subscription(subscriptionMode, itemList, fieldList);
mySub
.addListener({
onItemUpdate : function(itemUpdate) {
for (i = 0; i < fieldList.length; i++) {
// check whether the schema value is changed. If it's not, skip it
// unless a full data snapshot is being sent.
if (!itemUpdate.isValueChanged(fieldList[i])
&& !itemUpdate.isSnapshot()) {
continue;
}
var itemName = null;
itemName = itemUpdate.getItemName();
var value = null;
value = itemUpdate.getValue(fieldList[i]);
if (value != null) {
that.@com.delta.acs.loaddesk.client.ui.LDFieldsSub scription:nItemUpdate(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String(itemName, fieldList[i], value);
}
}
}
});
return mySub;
}-*/;
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