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MACROMEDIA COLDFUSION 4.5-CFML LANGUAGE Bedienungsanleitung Seite 8

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8 CHAPTER 30 Extending ColdFusion with CFX
Table 30.9 (continued)
METHOD DESCRIPTION
request.debug() Determines whether the tag has been
called with the
debug attribute turned on.
If so, you would presumably include some
kind of debugging message in the current
Web page with
writeDebug(). For details,
see the “Generating Debug Output”
section later in this chapter.
response.writeDebug(text) Includes a text message in the current Web
page. Very similar to
response.write(),
except that the text is only included in the
page if the tag has been called with a
debug attribute.
Table 30.10 C++ Methods for Exceptions and Debugging
METHOD DESCRIPTION
pRequest->ThrowException (message, detail) Creates an exception (error message),
similar to the
<cfthrow> tag in CFML.
The
message and detail must be
specified as
LPCSTR compatible values.
pRequest->Debug() Determines whether the tag has been
called with the
debug attribute turned on.
If so, you would presumably include some
kind of debugging message in the current
Web page with
WriteDebug().
pRequest->WriteDebug(text) Includes a text message in the current Web
page. Very similar to
pRequest->Write(),
except that the text is only included in the
page if the CFX is used with a
debug
attribute.
Writing CFX Tags with Java
Now that you’ve gotten an introduction to the methods available in the CFX API, you can get
started creating CFX tags with Java or C++. Because I assume that more people will be writing tags
in Java than C++ going forward, we’ll start off with Java. If you plan to work with C++, just take a
quick look through this section, then skip ahead to the “Writing CFX Tags with Visual C++” sec-
tion, later in this chapter.
Getting Started
The process of creating a Java CFX tag can be broken down into the following steps:
1. Writing the Java code in a text editor or Java IDE
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