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lib/XML/XQL.pm  view on Meta::CPAN

considered text nodes.

=item Function wrappers for Perl builtin functions

XQL function wrappers have been provided for most Perl builtin functions.
When using a Perl builtin function like "substr" in an XQL+ querry, an
XQL function wrapper will be generated on the fly. The arguments to these
functions may be regular XQL+ subqueries (that return one or more values) for
a I<query parameter> (see generateFunction for a definition.)
Most wrappers of Perl builtin functions have argument 0 for a query parameter,
except for: chmod (parameter 1 is the query parameter), chown (2) and utime (2).
The following functions have no query parameter, which means that all parameters
should be a single value: atan2, rand, srand, sprintf, rename, unlink, system.

The function result is casted to the appropriate XQL primitive type (Number, 
Text or Boolean), or to an empty list if the result was undef.

=back

=head2 XPath functions and methods

lib/XML/XQL/Plus.pm  view on Meta::CPAN

 "sprintf" => [[1, -1], "Text", 1, -1],

 #-------- Array Functions

 "join" => [[1, -1], "Text", 1], 
# "split" => [[2, 3], "List of Text", 1], 

 #-------- File Functions

 "chmod" => [2, "Boolean", 0, 1],
 "chown" => [3, "Boolean", 0, 2],
 "link" => [2, "Number", 0, -1],		#?? no return value
# "lstat" => [1, "List of Number"], 
 "mkdir" => [2, "Boolean"],		#?? or is 1 arg also allowed?
 "readlink" => [1, "Text"], 
 "rename" => [2, "Boolean", 0, -1],
 "rmdir" => [1, "Boolean"],
# "stat" => [1, "List of Number"], 
 "symlink" => [2, "Boolean", 0, -1],
 "unlink" => [1, "Boolean"],
 "utime" => [3, "Boolean", 0, 2],