Hi all,
I have three beans implementing a common interface.
I wish to use a reference to the interface in my jsp.
The first page (setting the request params) looks like this
PriceHandlerIF priceHandler = null;
String primaryKey = null;
String beanClass = request.getParameter ( "bean" );
try {
if ( beanClass.equals ( "Tour" ) ) {
primaryKey = request.getParameter ( "tourKey" );
priceHandler = Tour ();
((Tour)priceHandler).setFieldsMap ( DBHandler.retrieve ( new
Tour(), primaryKey ) );
}
}
catch ( DataBeanNotFoundException dbnfe ) {
%>
<jsp:forward page="index.jsp" />
<%
}
%>
I tried useBean on the first page but couldn't seem to get it working.
In the second page (request handler)I just put the class into scope with
pageContext.setAttribute like this.
<%@page contentType="text/html"
import= "au.org.mena.domain.System
au.org.mena.database.*"
%>
<%
pageContext.setAttribute ( "priceHandler", Class.forName (
request.getParameter ("beanClass") ) );
%>
<jsp:useBean id="priceHandler"
type="au.org.mena.domain.PriceHandlerIF" />
<jsp:setProperty name="priceHandler" property="*" />
<%
DBHandler.update ( priceHandler );
%>
<jsp:forward page="index.jsp" />
Unfortunately the servlet wants to instantiate a PriceHandler which doesn't
work.
Is there an easy way to use interfaces in JSP (without having the object
instatiated and in scope first)??
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