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ADF Taskflow Return to parent after completing taskflow

Use "Parent Action" component to call control flow of parent
Also in your parent taskflow you should have a control flow for this outcome.
The child will be calling this taskflow using parent action activity.

ADF TaskFlow Parameters

You will require to pass page flow scope parameters from your current environment into the adf taskflow:

Open the taskflow in overview mode and create a parameter

Open the jspx page or the fragment where you are plcing this taksflow,
go to bindings tab and give the input value for taskflow parameter from you page flow variable as in below image

PanelCollection set width 100 percent

Select Panel collection in properties set Style Class property to "AFStretchWidth"

JNDI Connection in jdeveloper

In applicationmodule properties set the database connection to jdbc datasource and the value "jdbc/your_datasource_name"

Application Context

In viewcontroller project properties -> Java EE Application. give application name and context name here.

ADF 11g: Deleting all rows from Viewobject programmatically.

On button event write below code:

DCBindingContainer dc = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();

ViewObject myVo= dc.findIteratorBinding("myVoIterator").getViewObject();
RowSetIterator rsI = myVo.createRowSetIterator(null);
while(rsI.hasNext()){
rsI.next().remove();
}
rsI.closeRowSetIterator();