Calling web services in adf form...

Question

suppose i have created a web service which is adding two string.this web service takes two string parameter and return concatenation of these two parameters.
I have an adf table which is showing firstname and lastname.when i select a row and press button submit it is returning concatenated first and last name.
can u tell me how the data of an adf table's row can be passed to web service and get the output of webservice.

Answer 1

I had a similar situation. The way I resolved it is ..
1. Create a web service proxy in your application. This will get you all the needed classes to invoke the WS from the java side.
2. Make sure you have a backing bean for your page and that the table and the button has a binding property in the bean.
3. Add an action handler for the button which will do the following.
a. get the selected row
b. invoke the web service
c. show the results.
a. Get the selected row..
Here is a snippet that I used to get the selected row...
private List<String> getSelectedRowColumns() throws Exception {
if (myTable == null) {
throw new Exception("Inconsistent state! 'myTable' cannot be null.");
log.debug("#### rows selected: "+myTable.getSelectedRowKeys().getSize());
List<String> alist = new ArrayList<String>();
UIXTable table = myTable;
Iterator selection = table.getSelectedRowKeys().iterator();
Object oldKey = table.getRowKey();
while (selection.hasNext()) {
Object rowKey = selection.next();
table.setRowKey(rowKey);
FacesCtrlHierNodeBinding row = (FacesCtrlHierNodeBinding) table.getRowData();
StringBuilder buf = new StringBuilder();
buf.append(" [Fname: ").append(row.getAttribute("Fname")).append("]");
buf.append(" [Lname: ").append(row.getAttribute("Lname")).append("]");
log.debug("##### Selected row [#" + table.getRowIndex() + "]" + buf);
alist.add((String) row.getAttribute("Fname"));
alist.add((String) row.getAttribute("Lname"));
return alist;
b. invoke the web service
I sudo coded the method to call the service for you. The classes that you see, will be generated from the web service (provided the service is set up correctly). Hope you understand this correctly...
private String getConcatenatedName() throws Exception {
          MyService myService =
               new MyService_Service().getMyServicePort();
          MyServiceProcessRequest request =
               new MyServiceProcessRequest();
          request.setFirstName(fname);
          request.setLastName(lname);
          System.out.println("About to call service");
          MyServiceProcessResponse response =
               myService.process(request);
          String token = response.getConcatenatedName();
          System.out.println("Token:" + token));
          return token;
c. show the results
You can set the partial trigger for the output location to point to the command button and it will get refreshed when the button action is done correctly (or add that output location component to refresh programmatically).
HTH,
--AJ