Help for Calling RFC in B2C application.

Question

hi,
We had written one RFC and all java classes related to that.
we are able to call RFC in b2c application.we are calling RFC on loading of JSP.
now my requirement is to call same RFC in other JSP but muliple times(in a for loop).But how can i do that?
one thing is sure we cannot calll this RFC on loading of new jsp page.we have to call inside jsp page(in a loop).
there is any way?
please help me out.
thanks in advance.
jayesh talreja

Answer 1

Two things I would like to say here:
1) Calling RFCs directly from JSP is not supported so we need to use interfaces and backend classes.
2) Calling an rfc is java code and in jsp we write java code along with html to make it dynamic...so dynamic
call is also possible.
ie. suppose we want to call our rfc for fetching some data from the backend based on the data entered at item level once the user clicks on update button on order creation page.So we can write the code like below
                              <%--   messages --%>
                                   <%@ include file="/b2b/itemErrMsg.inc.jsp"%>
                                   <% } %>
                                   <%-- ui.showItemDetailButton() --%>
                                   <% } %>
                                   <%-- ui.isBOMSubItemToBeSuppressed() --%>
                                   <%--Start of addition by Arshid --%>
                    <!-- From here our custom rfc call is starting-->
                    <%
                         String arg1[]= {"crm~isa~isacore~resources_en"};
                         if((JspUtil.removeNull(item.getProduct()).length()) !=0 && !(JspUtil.removeNull(item.getNetValue()).equals(WebUtil.translate(pageContext,"yourcompany.order.minimumValue",arg1))) )
                              String baseUOM = "";
                              int enteredQuan= 0;
                              double minOrderQuan = 0.00;
                              double roundingValue = 0.00;
                              BusinessObjectManager isaBOM = (BusinessObjectManager)userSessionData.getBOM(BusinessObjectManager.ISACORE_BOM);
                              User user = (User)isaBOM.getUser();
                              Shop shop = (Shop)isaBOM.getShop();
                              String distrChannel = shop.getDistributionChannel();
                              String sod = shop.getSalesOrganisation();
                              Z_CustomBusinessObjectManager customBOM = (Z_CustomBusinessObjectManager)userSessionData.getBOM(Z_CustomBusinessObjectManager.CUSTOM_BOM);
//Z_prodInfoValue is a bo that will hold the data returned from rfc call
                              Z_prodInfoValue z_prodinfo = customBOM.getZ_prodInfobo().getProdInfo(Zeropadding.productInfoNoPadding(item.getProduct()), sod, distrChannel);
<!-- Call ends here and this piece of code is called for every item on clicking on update buton -->
Although this is not a good code design as instead of making multiple calls to the backend we can get the above thing done in a single call also.I wrote this code just to give an example .
This clearky proves we can have dynamic calls to the backend through jsps also.
But Jayesh, your question is not very clear to me.
If its about for loop, where you want to call the backend for multiple times with different set of values than i would rather suggest you to create lists of these different datasets and send these in a single call to the backend and fetch the data similarily in tables in a single call.
Regards,
Arshi