探索Oracle APEX 4.2：开发新旅程与高级功能指南

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Oracle Application Express (APEX) 4.2, 第二版，是一本详尽的指南，涵盖了这个流行的Web应用程序开发平台的各个方面。本书旨在帮助读者从初学者到专业人士，深入了解并利用APEX的强大功能，使其开发过程变得更高效和有趣。作者和技术评审者共同呈现了一部全面的教程，从基础入门到高级主题，包括但不限于： 1. **入门介绍**：章节1提供了一个简短但深入的APEX 4.2概述，帮助读者建立对平台的整体认识，了解其在现代IT环境中的价值。 2. **开发者视角**：第二章重点关注开发者的角度，探讨如何有效地规划和执行项目，确保问题识别和解决方案设计的合理性。 3. **SQL Workshop**：在第4章，读者将学习如何使用SQL语言与APEX交互，这是构建应用程序的核心组件。 4. **应用程序与导航**：第五章讲解了应用程序的结构和导航设计，使用户能够流畅地浏览和操作。 5. **表单与报告**：从基础概念到进阶技巧，第6和7章分别介绍了如何创建交互式表单和生成专业报告。 6. **程序化元素**：第8章涉及了APEX的脚本、程序化逻辑和定制组件，扩展了应用程序的功能性和可扩展性。 7. **安全措施**：在第9章，读者将学习如何确保应用的安全性，保护数据和用户访问权限。 8. **应用打包与部署**：第10章着重于应用程序的管理和发布流程，以便将工作成果推广到生产环境。 9. **Websheets**：第11章解释了Websheets的新特性，这是一种直观的网页设计工具，有助于简化开发工作。 10. **Websheet示例**：紧接着是第12章，通过一个实际案例演示Websheets的应用，加深理解。 11. **扩展开发者工具**：第13章介绍了更多高级开发工具和技术，帮助提高开发效率。 12. **工作区管理**：工作空间作为开发者的个人工作环境，第14章探讨如何有效组织和利用这些资源。 13. **团队协作**：第15章聚焦于团队开发，讨论版本控制、协同工作和沟通策略。 14. **动态动作**：最后，第16章详细解析动态动作，这是实现复杂业务逻辑的关键组成部分。整体而言，这本书不仅适合初学者系统学习APEX，也适合有一定经验的开发者查阅和深化理解。无论你是希望提高开发效率，还是想要探索新的Web应用开发方式，都能在这本书中找到宝贵的资源。

CHAPTER 2 ■ A DEVELOPER’S OVERVIEW

At the far right of the menu bar is a search box that allows you to perform context-sensitive searches. The context

of the search depends on where you are in the Application Builder. For instance, if you’re on the workspace home

page, your search is across the entire workspace. However, if you’re in the Application Builder or the Administration

section, the search is limited contextually to those specific areas.

Beneath the main menu bar is the breadcrumb region. This not only gives you a visual clue of where you are

in the hierarchy of the workspace, but each breadcrumb is also a quick link that takes you back to that specific spot

in the hierarchy. You’ll create breadcrumbs in your own application that perform a very similar job. You don’t see

breadcrumb entries when you’re on the Home page.

Last, to the far right of the breadcrumbs, is the Help link, which appears as a stylized question mark. This

pops open a new window that displays the documentation web site containing searchable help for APEX. If, for

some reason, you don’t have access to external web sites, you may want to download the PDF versions of the

documentation to have on hand.

The rest of the page is dedicated to either giving you a quick link to the four main sections or providing you with

information about what’s going on in the workspace. The News region, shown in Figure 2-8, allows the developers in

a workspace to enter information they want others in the workspace to see. If more than one news item is active, this

region scrolls through the news items, wrapping back around to the first item when it reaches the end of the list.

Figure 2-7. Using the drop-down menus on the menu bar

Figure 2-8. Home page News scroller

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CHAPTER 2 ■ A DEVELOPER’S OVERVIEW

Notice the set of tabs above the application list. This tab set provides a high-level filter of which applications you

see from all those in your workspace:

All Applications shows all application types (database and websheet).

Database Applications shows only those applications that are built on top of a database

schema. These are considered standard APEX applications.

Websheet Applications shows only those applications that are websheet-style applications.

These are new to APEX 4, and we’ll talk more about them in Chapters 11 and 12.

Packaged Applications provides a set of ready-to-use applications and examples that can be

installed in the current workspace.

Figure 2-9 shows one application in the workspace named Sample Master Detail. However, there isn’t much

information about it other than its name, the Application ID (107), and the fact that it’s a packaged application. This is

where you begin to see the beauty of what APEX can do, not only in the developer UI, but also in your applications.

The list of applications you see is actually a style of report called an interactive report (IR). IRs allow you to

customize how reports and their contents are displayed. IRs are used throughout the APEX development interface and

can also be used when creating your own applications. They’re extremely powerful tools, and you’ll use them a lot.

On the right side of the page are four regions that show About information, Application Builder–related tasks,

recently edited applications, and a link to the Application Migration Wizard. You deal more with these later; for now,

you want to drill in to see the details of an application.

The Application Home Page

Clicking any one of the applications listed drills into the Application home page, as shown in Figure 2-10. This page is

very similar to the Application Builder home page, but it shows all the pages in a specific application. Again, it uses an

IR, so you can customize the way you see this data.

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探索Oracle APEX 4.2：开发新旅程与高级功能指南

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