Keeping a tree row selection in sync with a form of the details selected is a relatively easy process in ADF. As pointed out by Oracle at the following link, http://www.oracle.com/technetwork/developer-tools/adf/learnmore/sept2011-otn-harvest-508189.pdf, the key ingredient to making this happen is the separate iterator bind. From the tree table, choose the pencil icon and establish the target data source el expression with the EL Picker. Choose the iterator of the read-only detailed form view.
For more detailed information about this, please visit the Oracle link mentioned above, or download the project at https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B9yySVFbRABBNjc4YTIwYmUtNGQ4MC00ZDJhLTk2ZWEtZDY0MTlmYzk2MGZl&hl=en_US .