Expert one-on-one J2EE Design and Development phần 6 pptx

... public interface CommandExecutor { Command executeCommand(Command command) throws RemoteException, CommandException; } An SFSB remote interface might extend this (the executeCommand () method has ... PriceBandQuery object as an instance variable in the OracleJdbcSeatingPlanDAO class, and initialize it in the constructor as shown below: private PriceBandQuery priceBandQuery; …… this...

Ngày tải lên: 13/08/2014, 12:21

... EJBs and web applications in the same server instance. 93 Brought to you by ownSky Design Techniques and Coding Standards for J2EE Projects As J2EE applications tend to be large and complex, ... is bad J2EE code. Some "coding standards" issues – especially those relating to OO design – are on the borderline between design and implementation: for example, t...

Ngày tải lên: 13/08/2014, 12:21

... covering the design and technical aspects of successfully building J2EE applications. Rod's straight forward and no-nonsense approach to J2EE application design, development and deployment ... 4: Design Techniques and Coding Standards for J2EE Projects 113 Chapter 5: Requirements for the Sample Application 179 Chapter 6: Applying J2EE Technologies 203 Chapter 7: D...

Ngày tải lên: 13/08/2014, 12:21

... to 56K, and it is important that the system has acceptable response times over a modem connection. Customers wish: o To find out what shows are on offer and access information about shows and ... to proceed to purchase these seats, and that they should be returned to fully available status. Error Handling I the event of a system error (such as the J2EE server failing to connect...

Ngày tải lên: 13/08/2014, 12:21

... two caching options: A very smart cache; and no cache, whether or not were running in a cluster. WebLogic versions 6. 0 and later support both exclusive and database locking, but default to using ... to entity beans and the transaction and security management infrastructure for entity beans is architecturally gratuitous and an unnecessary overhead. These are issues to be hand...

Ngày tải lên: 13/08/2014, 12:21

... key to designing maintainable J2EE web applications, and the central point of this chapter. Both servlets and view technologies (such as JSP) are required for building maintainable J2EE web ... advantages of the Command design pattern, such as the ability to queue, log, and possibly undo commands. o We may be able to use transparent data binding from request to command bean pro...

Ngày tải lên: 13/08/2014, 12:21

... "com.wrox.expertj2ee.ticket.referencedata.Performance" scope = "request"/> <jsp:useBean id="priceband" type = "cora.wrox.expertj2ee.ticket.referencedata.PriceBand" ... and time and a list of PriceBand objects for that performance: public interface Performance extends Ref erenceltem { Show getShow(); Date getWhen(); List getPriceBands(...

Ngày tải lên: 13/08/2014, 12:21

... Model.get(TicketController.PERFORMANCE_KEY); PriceBand priceBand = (PriceBand) model.get (TicketController. PRICE_BAND_KEY) ; Next, we use the same code we've seen before to format dates and currency amounts according ... model.get(TicketControiler.PERFORMANCE_KEY); PriceBand priceBand = (PriceBand) model.get(TicketController.PRICE_BAND_KEY) ; Next we use similar code to that...

Ngày tải lên: 13/08/2014, 12:21

... p.getPriceBands().size(); i++) { PriceBand pb = (PriceBand) p.getPriceBands().get(i) ; avail = boxOf fice.getFreeSeatCount (p.getld() , pb.getldO) PriceBandWithAvailability pba = new PriceBandWithAvailabilitylmpl(pb, ... p.getPriceBands().size(); i++) { PriceBand pb = (PriceBand) p.getPriceBands().get( i ); avail = boxOff ice.getFreeSeatCount (p.getldl), pb.getId()); PriceBandWithAv...

Ngày tải lên: 13/08/2014, 12:21