The difference by calling an application to a backing bean module

Hello everyone!


I do not understand exactly, where is the difference by calling an application of a bean of the following support module.

Example 1
FacesContext context = FacesContext.getCurrentInstance();
ValueBinding vb = context.getApplication().createValueBinding("#{data}");
BindingContext bc = (BindingContext)vb.getValue(context);
DCDataControl dc = bc.findDataControl("AppModuleDataControl");
AppModuleImpl appModule = (AppModuleImpl)dc.getDataProvider();
Example 2
String amDef = "model.services.AppModule";
String config = "AppModuleLocal";
AppModuleImpl appModule = (AppModuleImpl)Configuration.createRootApplicationModule(amDef, config);
Example 3 (same as example 1?)
String EL = "#{data.AppModuleDataControl.dataProvider}";
FacesContext fc = FacesContext.getCurrentInstance();
ValueBinding vb = fc.getApplication().createValueBinding(EL);
AppModuleImpl appModule = (AppModuleImpl)vb.getValue(fc);
Please can someone explain, the three examples do? What kind of example is best to call an application-module to a backing bean method?


Thanks and greetings
Majo

Edit: I use ADF BC 10g in JDev10 :)

Hello

BindingContext bctx = DCUtil.getBindingContext (request);

There is nothing else that #{data}. Best is to always access #{bindings} El to get a handle to the binding object. This way you can be sure that the object exists and is instantiated.

DCBindingContainer links =... solve #{bindings}
BindingContext bctx = bindings.getBindingContext ();
Control of DCDataControl = bctx.findDataControl ("Name");
ApplicationModule m = control.getDataProvider () (ApplicationModule);

Frank

Tags: Java

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