Expert one-on-one J2EE Design and Development phần 6 pptx
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...
Expert one-on-one J2EE Design and Development phần 2 pptx
... EJBs and web applications in the
same server instance.
93
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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...
Expert one-on-one J2EE Design and Development phần 1 doc
... 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...
Expert one-on-one J2EE Design and Development phần 3 docx
... 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...
Expert one-on-one J2EE Design and Development phần 5 doc
... 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...
Expert one-on-one J2EE Design and Development phần 7 ppt
... 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...
Expert one-on-one J2EE Design and Development phần 8 ppsx
... "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(...
Expert one-on-one J2EE Design and Development phần 9 potx
...
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...
Expert one-on-one J2EE Design and Development phần 10 potx
... 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...