Multi Row Edit Forms in BC4J

Question

How in BC4J JSP can you create a form to edit multiple records at once?
Using JSP/JDBC its fairly straight forward, but in BC4J it doesn't seem obvious. Does anyone have examples?
Thanks,
Matt

Answer 1

here's what i did while putzing around trying to solve this. it's probably not production quality, but may give you ideas...
in the BrowseEdit form, i replaced the DataTable tag with my own table (built with RowSetIterate), sequentially (by row) numbering all the input field names just like i'd have had to for a CGI.
i also changed the jboEvent value.
<jbo:RowsetIterate datasource="ds" userange="true" >
<tr>
<td><%= rwcnt %></td>
<td>
<jbo:ShowValue dataitem="Id" />
</td>
<td>
<input value="<jbo:ShowValue dataitem="Site" />" name="Site_<%= rwcnt%>">
<input value="<jbo:ShowValue dataitem="Site" />" name="_Site_<%= rwcnt%>" type="hidden">
</td>
<td>
<input value="<jbo:ShowValue dataitem="Room" />" name="Room_<%= rwcnt%>">
<input value="<jbo:ShowValue dataitem="Room" />" name="_Room_<%= rwcnt%>" type="hidden">
<input value="<jbo:ShowValue dataitem="RowKey" />" name="RowKey_<%= rwcnt%>" type=hidden>
</td>
<% rwcnt++; %>
</tr>
</jbo:RowsetIterate>
<input VALUE="TableUpdate" TYPE="HIDDEN" NAME="jboEvent">
i then modified the DataHandler.jsp to add my new jboEvent. the handler loops thru the rows of data and does a SetAttribute on anything that's changed.
<jbo:OnEvent name="tableupdate">
<% String rowcntParam = params.getParameter("RowCount");
int RowCount = 0;
if (rowcntParam != null)
try { RowCount = Integer.parseInt(rowcntParam); }
catch (Exception ex) { }
%>
<% for (int index=1; index < RowCount; index++)
String RKvar = "RowKey_" + index;
%>
<jbo:Row id="csbrow" datasource="ds" action="update" rowkeyparam="<%= RKvar %>" >
<jbo:AttributeIterate id="atts" datasource="ds" >
<% // atts is an AttributeDef object....
String oldVal = params.getParameter("_" + atts.getName() + "_" + index );
String newVal = params.getParameter(atts.getName() + "_" + index );
if (oldVal != null && newVal != null && !oldVal.equals(newVal)) {
%>
<jbo:SetAttribute datasource="ds" value="<%= newVal %>" />
<%
%>
</jbo:AttributeIterate>
</jbo:Row>
<%
} // end row loop
%>
</jbo:OnEvent>
YMMV,
cb