CHAPTER 11 (Most popular web site) REST-BASED MODEL VIEW CONTROLLER PATTERN
CHAPTER 11 REST-BASED MODEL VIEW CONTROLLER PATTERN Figure 11-9. Object redirection architecture Implementing the architecture requires a servlet that manages the various representation implementations and reacts appropriately to an HTTP request. Following is the implementation of the class PermutationsServlet, with some parts missing for clarity: public abstract class PermutationsServlet extends HttpServlet { List _representations = new LinkedList(); public PermutationsServlet() { } protected Representation getRepresentationInternal( String mimetype, HttpServletRequest request) { Iterator repIter = _representations.iterator(); while( repIter.hasNext()) { Representation representation = (Representation)repIter.next(); if( representation.canProcess( mimetype, request)) { return representation; } } return null; }
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