developing gdi web applications

... are other standard divisions that you may choose to apply to certain modules in certain types of applications Microformats are other examples of standard formats that you might incorporate within ... Flow Although the goal is to keep information architecture and presentation separate in a large web application, they are, of course, related The information architecture is largely responsible...

Ngày tải lên: 03/07/2014, 07:20

... Working with Events Much of the behavior layer in large web applications is dedicated to handling events Unfortunately, event handling in web browsers can be a source of inconsistency and trouble ... referencing an element by ID There are several other methods for performing DOM operations in large web applications that you can expect to use frequently This section presents some of the most common ... optional, but we will see in a moment that they provide some very important capabilities for large web applications Here is a description of each parameter: element The element for which the event...

Ngày tải lên: 03/07/2014, 07:20

... with database connections, accessing time-consuming web services in parallel, and Trang 6working with JSON, which is particularly useful for Ajax applications Finally, we lookat a few things to keep ... attribute that makes it easy for multiple modules to access the same data, which is common in large web applications For example, imagine a postal code stored by the backend for the current visitor ... for managing dynamic data One of the most important goals for managing dynamic data in a large web application is to establish a clearly defined data interface through which to interact with...

Ngày tải lên: 03/07/2014, 07:20

... derives the New Car Listings data manager from the Web Service data manager, which provides common capabilities for any data manager that accesses web services When you extend a data manager using ... manager using inheritance class NewCarListingsDataManager extends WebServiceDataManager { // This class has access to all the WebServiceDataManager protected // and public members to support ... out of NewCarDetailsDataManager , in practice. • The database support required by most large web applications can be abstracted into other database data managers as well These can handle things...

Ngày tải lên: 03/07/2014, 07:20

... Trang 1Data from Web ServicesA web service is a system that defines an API for accessing information over a network Data ... simple interface, natural abstraction, and ubiquity of web services makes them very desirable for interfacing with backend systems To access a web service from a data manager, you can use the PHP ... provides a basic example of a data manager to access a web service using cURL Example 6-13 Using cURL inside of a data manager to access a web service class NewCarListingsDataManager { public...

Ngày tải lên: 03/07/2014, 07:20

... passed back in $save_stat Headers, footers, and content The focus of any web page, of course, is its content Since most large web applications have a standard header and footer across the top and bottom ... those presented here for such a class, the example provides a good starting point for many large web applications We’ll explore the class by examining its public interface, ab-stract interface, and ... register_links (see register_links) for the common CSS files to link across all pages in your entire web application You normally define this method in the base class from which you will derive all...

Ngày tải lên: 03/07/2014, 07:20

... pages across all types of web applications In this section, we look at some common derivations of Page These include a page class to handle the specifics of a single web application, page classes ... certain sections of a web application, and page classes for specific pages As we explore these types of classes, we’ll look at the role that each is likely to play in a large web application, especially ... class is likely to implement. Such a systematic hierarchy of page classes helps us create large web applications that are ultimately more maintainable because each class is highly modular and has...

Ngày tải lên: 03/07/2014, 07:20

... class, the example provides a good starting point by which to implement modules in many large web applications A module specifies what it needs loaded for HTML, CSS, and JavaScript, but these ... stylized Trang 6button, to name a few In this section, we explore a popular component in many large web applications: a slideshow, which presents a series of slides along with some navi-gation (right, ... false; } // You would likely define a number of other methods here for tasks // specific to your web application and that apply to all parts of it. . } Defining sectional page classes A sectional...

Ngày tải lên: 03/07/2014, 07:20

... examples of special situations in large web applications with solutions using the tech-niques from this chapter. Handling Module Variations In large web applications, modules frequently need to ... containers play a vital role in fostering reusability, maintainability, and reliability in large web applications by defining a number of standard sections in which to place modules on a page A section ... to search results, be they search results for new cars, used cars, reviews, or articles in our web application This layout has sections for a header at the top, three content sections in the...

Ngày tải lên: 03/07/2014, 07:20

... to make them correspond to modules (see Chapter 7) Interestingly, MVC is also helpful for DHTML applications that don’t use Ajax but have other dynamic aspects to manage The only difference is ... making an Ajax connection Using Ajax with MVC To better understand how MVC specifically aids Ajax applications, let’s look at a basic example for testing simple Ajax requests managed using MVC In...

Ngày tải lên: 03/07/2014, 07:20

... your HTML, CSS, JavaScript, and PHP work together By utilizing a set of techniques for developing large web applications like the ones in this book, you can manage performance with relative ease ... build large web applications that perform well They also facilitate a good en-vironment for capturing site metrics and testing. We begin this chapter by looking at how the techniques for developing ... percent is spent downloading components for the user interface By following a set of 14 rules, many web applications can be made 20 to 25 percent faster These statistics emphasize the importance of...

Ngày tải lên: 03/07/2014, 07:20

... method for improving the performance of a large web application is to dis-tribute your assets across a number of servers Whereas only very large web applications may be able to rely on virtual IP ... at an example of this in this book, although it clearly plays an important part of most large web applications Whenever you expect to do a lot of caching, keep in mind that caching can cause its ... like those of Akamai and a few other compa-nies that are typically available only to very large web applications These networks use sophisticated caching algorithms to spread content throughout...

Ngày tải lên: 03/07/2014, 07:20

... organize the components we’ve discussed for large web applica-tions in previous chapters as an example A reasonable place to start for most web applications is to decide where in the architecture ... adding and removing components easier This is important for test data, too The data for most web applications comes from databases or other backend systems But while the backend is under development, ... large web application reflects the architecture of the application itself, including clearly demarcated scopes in which each file will be used. We’ll begin by examining the design of a sample web...

Ngày tải lên: 03/07/2014, 07:20

... A reusable container for a web pageTrang 2Pages and modulesThe base classes for pages and modules are excellent examples of components that are used across an entire web application By placing ... with fewer image files to organize under the images directory. Section Architecture Most large web applications have some components that are specific to certain sections of the application, so ... truly maintainable Reorganizing Module Uses One of the most common maintenance issues with large web applications is keeping Trang 9example, suppose a module originally designed specifically for...

Ngày tải lên: 03/07/2014, 07:20

... (Publisher-Subscriber), 200 T tables (HTML), 30 tenets for large web applications, 4 tenet 10: application architecture, 247 tenet 1: large web applications, 4 tenet 2: object orientation, 7 tenet 3: ... troubleshooting) web browsers (see browsers) web pages defined, 135 generating modular, 136–140, 268 implementing, 256 modeling, 11–14 page types (UML), 11 page weight, 35 performance of PHP, 140 web services, ... 145 load_data (PHP), 117, 137, 145, 162 local action (MVC), 201 local path, 235 longevity of web applications, 2 loose coupling, 4, 14 M magic methods (PHP), 16 maintainability, 4 manage_css_linked...

Ngày tải lên: 03/07/2014, 07:20

... Number: 2300A Released: 06/2002 Delivery Guide Developing Secure Web Applications Trang 2Information in this document, including URL and other Internet Web site references, is subject to change ... experience in developing or designing distributed Web applications Actual job roles and titles will vary throughout the technology industry, and may include, but may not be limited to, Web developers ... Define the basic principals of, and motivations for, Web security ! Perform a threat analysis on Web-accessible assets ! Secure their Web applications by validating user input ! Select the...

Ngày tải lên: 06/07/2014, 06:57

... J2EE Web Applications 53Figure 3.8 Dynamic Web Project Figure 3.9 Project Facets Trang 65 Click the Finish button to create the Web project Since this is the firsttime you have created a Web ... The Web application is nowready to run pages, JSPs, and images, go The WebContentfolder contains a specialfolder named WEB-INF, which contains items that are not accessible by aWeb browser The WEB-INFfolder ... controlled the tion logic of your Web application For simple Web applications, you can codethis logic manually However, for complex applications, you should considerusing a Web application framework,...

Ngày tải lên: 07/08/2014, 00:22

... contents of WebContentwill be accessible from the Web application context root The following default elements are created with a dynamic Web project: ❍ WebContent/WEB-INF/web.xml: This is the Web deployment ... module Trang 18Creating Web ApplicationsTo build a Web application you need a project that contains a Web module.There are two types of Web projects: static and dynamic Static Web projects contain ... the WEB-INF/classesfolder ofthe final application Trang 23pub-Figure 6.8 Dynamic Web Project—LeaguePlanetWebProjectFigure 6.9 Elements of a Dynamic Web Project Resource classes lib web.xml * Web...

Ngày tải lên: 07/08/2014, 00:22

... available via other channels For Web applications, this means that the same business logiccan be accessed, for example, by Web browsers, voice response units, and Webservices The set of components ... logic of a Web 199 Trang 2application is referred to as the presentation tier This chapter describes the structure of the presentation tier for Java Web applications and the tools in WTPfor developing ... be well-formed XML.While CSS is applied in the Web browser, XSLT may be applied either in the Webbrowser or the Web server Applying XSLT on the Web server is generally a saferoption in practice...

Ngày tải lên: 07/08/2014, 00:22

... apowerful tool for understanding and debugging Web applications You’ll alsouse the TCP/IP monitor in Chapter 10 to validate that Web service messagescomply with Web Service Interoperability (WS-I) profiles ... with either local or remoteWeb servers This comes in handy when you are trying to debug a client for anexternal Web service When you use the wizard to create your own Web services,you can have ... more easily modified by Web developers In the next itera-tion, you’ll generate HTML using a JSP gener-Iteration 7: JSP JSP is the J2EE recommended way to dynamically generate Web pages You willnormally...

Ngày tải lên: 07/08/2014, 00:22