Datatags, Error Handling, Formatting

Question

I've build JSP Pages on BC4J components using Datatags. I was wondering when applying DML changes how can i get write my own error code? Do I have the posibility to get the state of the attribute out of the datatags? Can i ask if the attribute is mandatory, if so, put the mandatory items in bold and when an error is raised, put the focus back to that item on the page?
Does anybody know how to do this?

Answer 1

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Charles (JDev team) ([email protected]):
To know if an attribute is mandatory you can use the isMandatory() method on the AttributeDef interface. The following code bold the attribute name when mandatory using jsp tags and java scriplets:
<jbo:Datasource id="ds" appId="myAppModule" />
<%
// Retrieve the attribute information by name
AttributeDef attrDef = ds.getRowSet().getViewObject().findAttributeDefs("myAttributeName");
boolean isMandatory = attrDef.isMandatory();
if (isMandatory)
%><b>
<% } %>
<%=attrDef.getName()%>
<%
if (isMandatory)
%></b>
<% } %>
In the next release there is a new tag to handle the definition information for an attribute. It will make it easier to access this information.
<HR></BLOCKQUOTE>
Thank you for the answer but i was wondering that we can focus our attributes, for example the attribute that was wronlgy updated or inserted has to get focus en a custom error message.
How can we put the focus on our items and give custom errormessages?
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