Installation guide

4.4.2 CFCONTENT

Both ColdFusion and BlueDragon support an available FILE attribute for CFCONTENT, to

name a file whose content should be sent to the browser (with its mime type optionally

indicated with the available

TYPE attribute). BlueDragon takes this a step further and lets

you send the value of a variable, using a new OUTPUT attribute.

An example of using it might be when a

CFQUERY retrieves a column of binary type from

a database (perhaps a graphic). Assuming the variable is

myquery.mygraphic, you could

then send that to the browser in a single step with:

4.4.3 CFDUMP

The

CFDUMP tag VAR attribute is required in ColdFusion, but is optional in BlueDragon; if

omitted, variables in all scopes (except the

CGI and SERVER scopes) are displayed:

Of course, it’s permissible to dump the CGI and SERVER scopes by specifying either of

them in the

VAR attribute. They’re just not dumped automatically with the special form of

CFDUMP.

The

CFFDUMP output for query result sets shows additional information about the query

including the datasource name, the SQL processed, the execution time, the number of

records found, and the size in bytes.

BlueDragon’s dump also can show all the records in a query resultset, as well as

expanded information about XML objects. This is controlled with an optional

VERSION

attribute, which takes two values:

LONG and SHORT. The default for query result sets is

LONG. It applies to CFDUMP both with and without use of the VAR attribute, as described

above.

In the SHORT version, a dump of query result set will not show the actual records from the

query, but will show other useful information about the query (records found, execution

time, SQL string, etc.).

The dump of an XML object will work similarly to the long and short versions available

in ColdFusion MX. Whereas in ColdFusion MX, you would click on the displayed XML

object to cause it to switch between short and long versions, in BlueDragon you choose

the alternative using the

VERSION attribute. The default is SHORT.

Currently, only query result sets and XML documents are affected by the

VERSION attrib-

ute, and it has no effect for other variable types (they can be dumped, but the result is not

varied by specification of the

VERSION attribute). Similarly, the VERSION attribute setting

BlueDragon 6.1 CFML Compatibility and Reference Guide 16