Get the PageFlowScope of a Region Bounded Task Flow

Sometimes you need to access the PageFlowScope of a Task Flow Region( child Bounded Task Flow ) and get a handle to a pageFlowScope managed Bean. Normally you don't need to do this and Oracle don't want you, to do this. To make this work you need three internal classes so there is no guarantee that it works in 11g R1 PS4 or higher, but it work in PS2 & PS3.

Basically this is what you need to do.

• Get the Task Flow binding of the region in the page definition, you need to have the full name
• Get the RootViewPortContext
• Find the ChildViewPortContext , use the TaskFlow full name
• Get the pageFlowScope Map of the ChildViewPortContext 

Here some demo code.

	package test.adf.global.beans;
	import javax.faces.event.ActionEvent;
	import java.util.Map;
	import oracle.adf.controller.ControllerContext;
	import oracle.adf.model.BindingContext;
	import oracle.adf.model.binding.DCBindingContainer;
	import oracle.adf.view.rich.context.AdfFacesContext;
	import oracle.adf.controller.internal.binding.DCTaskFlowBinding;
	import oracle.adfinternal.controller.state.ChildViewPortContextImpl;
	import oracle.adfinternal.controller.state.RootViewPortContextImpl;
	import test.adf.global.interfaces.BeanInt;
	public class MainBean {
	public MainBean() {
	}
	private String name = "main";
	public void setName(String name) {
	this.name = name;
	}
	public String getName() {
	return name;
	}
	// dump current Task Flow pageFlowScope
	public void dumpPageFlowScope(ActionEvent actionEvent) {
	AdfFacesContext facesCtx= null;
	facesCtx= AdfFacesContext.getCurrentInstance();
	Map<String, Object> scopeVar= facesCtx.getPageFlowScope();
	for ( String key : scopeVar.keySet() ) {
	System.out.println("key: "+key);
	System.out.println("value: "+scopeVar.get(key));
	}
	}
	// dump the child Task Flow pageFlowScope
	public void dumpChildPageFlowScope(ActionEvent actionEvent) {
	// get the current BindingContainer
	BindingContext bctx = BindingContext.getCurrent();
	DCBindingContainer mainViewPageBinding = (DCBindingContainer)
	bctx.getCurrentBindingsEntry();
	// find the task flow pagedef binding, see the pageDef
	DCTaskFlowBinding tf = (DCTaskFlowBinding)
	mainViewPageBinding.findExecutableBinding("child1");
	System.out.println(tf.getFullName());
	ControllerContext conn = ControllerContext.getInstance();
	RootViewPortContextImpl rootViewPort =
	(RootViewPortContextImpl) conn.getCurrentRootViewPort();
	ChildViewPortContextImpl childView = (ChildViewPortContextImpl)
	rootViewPort.getChildViewPortByClientId(tf.getFullName());
	// get pageFlowScope
	Map<String, Object> scopeVar= childView.getPageFlowScopeMap();
	for ( String key : scopeVar.keySet() ) {
	System.out.println("key: "+key);
	System.out.println("value: "+scopeVar.get(key));
	}
	BeanInt bean = (BeanInt)scopeVar.get("childBean");
	System.out.println(bean.getName());
	}
	}

view raw MainBean.java hosted with ❤ by GitHub

Here you can download the demo workspace