About the adf Bindings object

Question

As far as I know, the page definition xml defines the datasource(such as the return method in the data control panel) of the .jspx page. when i intend to show the label text dynamically, i should use the Expression builder. then it popups a dialog where i can build the el visually. the problem is
1.when the label is in a table,then i can build the el in two ways:#{row.name} or #{row.bindings.name.inputValue}. what's the difference?
2.if the label is in a tree, i will have to use another variable node,so it's:#{node.name}. i want to know where the variable "row" and "node" is defined?
Besides, there are aslo objects: adf bindings,adf managed beans,jsp objects. how and when should i use me? some detail learning materials are expected. because it' hard to explain in words.
Edited by: Tom on 2011-8-4 下午7:14

Answer 1

Here is the explanation assuming model as ADFBC,
row.name
row here is a ViewRowImpl class, if you have any custom rowimpl class generated for the view object, it would be referring that else refers to ViewRowImpl. row.name uses introspection and calls getName() method inside ViewRowImpl or custom row impl class.
Here, the first letter of name should be lower case always so that the introspection would be applied
row.binding.name.inputValue
Gets the current row attribute value from the binding instead from the row directly. Here the case of the name should match the attribute name in view object. If the attribute name is "Name", EL should be "row.binding.Name.inputValue" or if it is "name", EL should be "row.binding.name.inputValue"
HTH
Sireesha