JavaBean Scope in JSP pages

[Reema Patel]

I'm a bit confused as to why the following code snippet is compiling and working.

 
<%
boolean bVar= request.getParameter("sarch")!=null ?true:false;
%>
<% if(bVar == true){%>
<jsp:useBean id="store" class="com.abc.Book" />
<%}%>
//retrieve info
<% if(bVar == true){%>
<jsp:getProperty name="store" property="shop" />
<%}%>   

The bean reference "store" is local to the if block. This should have resulted in a compilation error. Instead, everything works just fine. I'm using Tomcat 5.


- Reema
[ December 16, 2006: Message edited by: Reema Patel ]

[Bear Bibeault]

Originally posted by Reema Patel:

The bean reference "store" is local to the if block.

Not.

The scripting variable created by the useBean action is indeed limited to the block. But that's not what you are referencing in the getProperty action. That is referencing the scoped variable created by useBean. And that has page scope.
[ December 16, 2006: Message edited by: Bear Bibeault ]

[Bear Bibeault]

P.S. Confusing semantics such as this is just one of the many reasons that scriplets are discouraged in the JSP 2.0 environment.