ADF query panel with table, adding new search fields dynamically

Question

I am a beginner very new to ADF world. I have a ADF query panel with table which has its source from a ViewCriteria. I need to add a new search field on the form dynamically based on the user's need. Assume I am using a Employee table and I have search "employee ID" as one field in the form, upon clicking a add button in the form I need to have a another "employee ID" field appears along with the already existing one.
I tried to add the condition in ViewCriteria but do not know how to add it ?
Could some one pls address how it can be approached ?

Answer 1

User, please always tell us your jdev version.
Well, this use case need some thinking to be done. What do you want to archive with adding a new query field to the panel? As you said you already have one field for employeeId and now, on a click on a button, you add another one. How would the resulting query work with the new field? Should it use 'and' to concatenate the query or should it use 'or'?
I suggest that you use the ADF Riche Client Demo (http://jdevadf.oracle.com/adf-richclient-demo/faces/index.jspx) select the Query node and then select 'af:query'. This shows you what is possible otu of hte box using the af:query component. You can add fields to existing queries in advanced mode (e.g. use system query 5, which starts with an empty panel and allows you to add fields).
Once you understand how this works you may come back with a more detailed use case description or you have found the solution already. Read the documentation on af:query along with trying otu the component.
Timo