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thanks for replying
I've checked the post in adf codecorner, but it's not the answer i'm seeking.
I want to find a simpler way to asynchronously load a tree without using a Bean(just use POJO DataControl).
Here "asynchronously load a tree" means:
1. At first, the 1st level of the tree nodes are loaded to my POJO DataControl.
2. When user disclose a tree node, the direct children of that node are loaded to my POJO DataControl.
I don't want to use af:tree's disclosureListener and write code explicitly in a bean to achieve this.
I want to know, if there is some function to overwrite in my POJO DataControl, so the adf framework will call the function automatically to achieve this.