Monday, August 14, 2006

tiles -- 4 types of resources

To quickly get a TR on any tiles application like http://www.javaworld.com/javaworld/jw-09-2002/jw-0913-designpatterns.html, at a glance you need to identify 4 types of "resources"

1) component-jsp files like header.jsp
2) template files
3) definitions contained in tiles-defs.xml
4) user-jsp files ie any jsp files using the trio.

So now you know tiles are not that simple -- the simplest demo needs at least 4 types of files.

To better understand the need for the 4 files, use the concept of "referencing", or more simply, "mention".
a) A template alone can't reference a component-jsp. Internalize the fundamental reasoning. See other posts.
b) Therefore a template can't be a URL. A URL must reference all component-jsp directly or indirectly.
c) A URL has to be a user-jsp, referencing the defitions, which in turn references template and component-jsp files

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http://www.linkedin.com/in/tanbin