ColdFusion Developer's Guide

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Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta You can divide your logical web application into multiple ColdFusion applications by using multiple application definition pages with different application names. Alternatively, you can use multiple application definition pages that specify the same application name, but have different code, for different subsections of your application. The directory trees in the following figure show two approaches to implementing an application framework: ■ In the example on the left, a company named Web Wonders, Inc. uses a single Application.cfc file installed in the application root directory to process all application page requests. ■ In the example on the right, Bandwidth Associates uses the settings in individual Application.cfc files to create individual ColdFusion applications at the departmental level. Only the Products application pages are processed using the settings in the root Application.cfc file. The Consulting, Marketing, and Sales directories each have their own Application.cfc file. Web Wonder, Inc. Application.cfc Products Support Services Orders 330 Designing and Optimizing a ColdFusion Application Bandwith Associates Application.cfc Products Consulting Marketing Sales Application.cfc Application.cfc Application.cfc
Beta Beta Beta Beta Beta Beta Beta Beta Beta Beta Defining the application and its event handlers in Application.cfc The Application.cfc file defines application-wide settings and variables, and application event handlers: ■ Application-wide settings and variables include page processing settings, default variables, data sources, style settings, and other application-level constants. ■ Application event handlers are CFC methods that ColdFusion automatically executes when specific events occur during the lifetime of an application: application start and end, session start and end, request start, execution, and end, and exceptions. Defining application-level settings and variables When you create an application, you can set a number of application-wide properties and characteristics, including the following items: ■ Application name ■ Application properties, including Client-, Application-, and Session-variable management options ■ Page processing options ■ Default variables, data sources, style settings, and other application-level constants This section describes the following topics: ■ Naming the application ■ Setting application properties ■ Setting page processing options For information on setting default variables, see “Setting application default variables and constants in onApplicationStart” on page 336. Naming the application Define the application and give it a name by setting the This.name variable in the Application.cfc initialization section, before the method definitions. By using a specific application name, you define a set of pages as part of the same logical application. Defining the application and its event handlers in Application.cfc 331
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Beta ColdFusion Developer’s Guide
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Beta Contents Introduction . . . .
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Beta Chapter 8: Creating ColdFusion
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Beta About resource and sandbox sec
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Beta Refining your searches with zo
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Beta Authentication. . . . . . . .
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Index A access client variables 412
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authentication application-based ex
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cfexit tag about 43 behavior of 296
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SetVariable 103 StructClear 134 Str
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caching 1144 curve chart considerat
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web services and 1306 when to use 2
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forms for updating 584 insert form
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adding custom header 1428 attachmen
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in user-defined functions 222 infor
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esponding to messages from ColdFusi
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Internet applications 19 ColdFusion
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functions for 502 generating multi-
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described 1539 example 1544 onIncom
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unions 609 user guide 609 using 599
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text 1470 retrieving, e-mail messag
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about 37, 74, 324, 400, 404, 417 bu
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web services, consuming 1319 web se
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V validating data types 83 form fie
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type conversions 1304 web services,
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