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This book is accompanied by a rich and varied set of example solutions. The sample solutions were built using the production version of WSE 3.0 that was released on November 7, 2005. The code examples are chosen to illustrate complicated concepts clearly. Although Web Services Enhancements are conceptually complicated, this does not mean that they translate into complex code. In fact, the situation is quite the opposite. You will be surprised at how clear and straightforward the code examples are, plus you will find that most WSE-supported functionality can be accessed and administered via declarative policy files that do not require you to write a single line of .NET code.

If this is selected, then the comment form will appear at the bottom of the full-page node..

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It was clear that CGI could be improved upon In May 1995, John Gage of Sun and Andreessen (now of Netscape Communications Corporation) announced the birth of a programming language called Java Netscape Navigator would offer support for this new language, originally intended for set-top boxes (and you thought Microsoft and Sony were the first companies to fight for control of your living room!) As is often the case when something truly revolutionary happens, Java and the Internet were at the right place at the right time, and within a few months of its release on the Web, thousands of people had downloaded Java With Netscape s dominant Navigator supporting Java, a new avenue for dynamic Web pages had opened: the era of applets had begun Applets allow developers to write small applications that can be embedded on a Web page.

Visit http://www.bluestonepartners.com/soa.aspx for updates to the book and sample solutions, and for errata corrections. Check there often, because WSE is expected to undergo several revisions between now and the release of the WCF. In addition, the topic of SOA continues to evolve rapidly, and every month brings new, interesting developments. And now, once more into the breach, dear friends, once more . . .

You can also change whether a user must preview a comment before submitting it by selecting Disabled, Optional, or Required under Preview comment. If you select either Optional or Required, then a Preview Comment button appears under the comment form.

The Menu settings tab allows you to add a link to the node to any of the available menus on the site. When a node is added to a Drupal site and the user has permission to add a menu link, the user is presented with a single drop-down field to select to which menu the node link belongs. The Menu settings tab allows you to select which menus appear in the drop-down (see Figure 4-7). If more than one menu is selected, then the Default parent item setting controls which menu is displayed as the default, that is, which menu link is selected by default when a node is created. This drop-down automatically updates when additional Available menus options are selected.

As long as they use a Java-aware browser, users can run the applets in the browser s Java Virtual Machine (JVM) While applets can do a number of things, they have some restrictions: they are typically prevented from reading or writing to the file system, they cannot load native libraries, and they may not start programs on the client In addition to these restrictions, applets run with a sandbox security model that helps protect users from malicious code For many people, applets were their first exposure to the Java programming language, and at the time they were an excellent way to create dynamic Web applications Applets let you create a thick client inside your browser, within the security constraints of the platform In some areas at the time, applets were widely used; however, they never really grabbed the Web community.

ervice-oriented architecture (SOA) represents a new and evolving model for building distributed applications. Services are distributed components that provide well-defined interfaces that process and deliver XML messages. A service-based approach makes sense for building solutions that cross organizational, departmental, and corporate domain boundaries. A business with multiple systems and applications on different platforms can use SOA to build a loosely coupled integration solution that implements unified workflows.

Content fields are added to content types to create customized forms. Multiple field types are available, such as check boxes, radio buttons, drop-down lists, text fields, images, file uploads, and more. This means that whenever someone creates a node, you can add custom fields to that form, which are displayed (and available for display) when viewing the node. You can add an unlimited number of fields to a content type. For example, the Article content type contains two added fields: a taxonomy Tags field for tagging and categorizing content and an Image field for uploading images (see Figure 4-8). You can create multiple example.com/node/add/content_type forms with customizable fields.

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