while ago I decided to create an ADF page based on a dynamic table, and
I found that, although there are quite some articles about the subject
online, I still faced some challenges while implementing such a solution
in ADF 12c. These challenges, however, can be solved easily when you
know some basic principles, and I would like to share those.
let me define what I mean with dynamic table in this post. It is an ADF
table, specified in the JSF file with the af:table tag, with an unknown
number of columns and rows. Moreover, the number of columns is still
unknown when you run the page, as opposed to solutions where a table is
created at runtime, based on a query.
We can add to that another
feature: this table is not based on a database table nor a query, but
will be built up at runtime based an a set of data that we will retrieve
at the user’s request.
Use case: importing data with a time dimension
would we need such a table? Let me give a practical example: we want to
let the user import a file, which is a CSV file export of a
spreadsheet, in which the columns represent the time dimension. For
instance, each column represents a day. Since we don’t know on forehand
for how many days we will import data, we cannot build a view or table
which has a column for each day.
On the other hand, when we will
store the data in a database table, this table will have a date column
(or attribute) in which the date column value from the CSV file will be
So the database data model is very different from the data model we can read from the CSV file.
the reason we want to show this data in the ADF table is simple: we
want to show to the user that the CSV file has been read by the program
successfully and that the columns as shown in our ADF page correspond to
the columns in the spreadsheet the data has come from.
Demo: creating rows and columns at the user’s request
demo application that I provide with this post, is meant to illustrate
how a dynamic ADF table can be created, and how data can be read from
and written to that table. As I want to keep the demo application as
simple as possible, I concentrate on the ADF table, and will leave out
the functionality of the storing data in the database or reading it from
What I do include in the demo, is that the table is editable, so we can see that it is working properly.
this purpose, the demo contains three buttons: two for adding columns
and rows, and one to dump the contents of the entire table to the
On starting the application up, the following screen appears: a table with zero columns and zero rows. Read the complete article here.
WebLogic Partner Community
For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center.
Blog Twitter LinkedIn Forum Wiki