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.\" ========================================================================
.\"
.IX Title "TM::ResourceAble 3pm"
.TH TM::ResourceAble 3pm "2019-09-07" "perl v5.28.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
TM::ResourceAble \- Topic Maps, abstract trait for resource\-backed Topic Maps
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&   package MyNiftyMap;
\&
\&     use TM;
\&     use base qw(TM);
\&     use Class::Trait (\*(AqTM::ResourceAble\*(Aq);
\& 
\&     1;
\&
\&   my $tm = new MyNiftyMap;
\&   $tm\->url (\*(Aqhttp://nirvana/\*(Aq);
\&
\&   warn $tm\->mtime;
\&
\&   # or at runtime even:
\&
\&   use TM;
\&   Class::Trait\->apply (\*(AqTM\*(Aq, qw(TM::ResourceAble));
\&   my $tm = new TM;
\&   warn $tm\->mtime;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This traits adds methods to provide the role \fIresource\fR to a map. That allows a map to be
associated with a resource which is addressed by a \s-1URL\s0 (actually a \s-1URI\s0 for that matter).
.SS "Predefined URIs"
.IX Subsection "Predefined URIs"
The following resources, actually their URIs are predefined:
.ie n .IP """io:stdin""" 4
.el .IP "\f(CWio:stdin\fR" 4
.IX Item "io:stdin"
Symbolizes the \s-1UNIX STDIN\s0 file descriptor. The resource is all text content coming from this file.
.ie n .IP """io:stdout""" 4
.el .IP "\f(CWio:stdout\fR" 4
.IX Item "io:stdout"
Symbolizes the \s-1UNIX STDOUT\s0 file descriptor.
.ie n .IP """null:""" 4
.el .IP "\f(CWnull:\fR" 4
.IX Item "null:"
Symbolizes a resource which never delivers any content and which can consume any content silently
(like \f(CW\*(C`/dev/null\*(C'\fR under \s-1UNIX\s0).
.SS "Predefined \s-1URI\s0 Methods"
.IX Subsection "Predefined URI Methods"
.ie n .IP """inline""" 4
.el .IP "\f(CWinline\fR" 4
.IX Item "inline"
An \fIinlined\fR resource is a resource which contains all content as part of the \s-1URI.\s0 Currently
the \s-1TM\s0 content is to be written in AsTMa=.
.Sp
Example:
.Sp
.Vb 1
\&  inlined:donald (duck)
.Ve
.SH "INTERFACE"
.IX Header "INTERFACE"
.SS "Methods"
.IX Subsection "Methods"
.IP "\fBurl\fR" 4
.IX Item "url"
\&\fI\f(CI$url\fI\fR = \fI\f(CI$tm\fI\fR\->url
.Sp
\&\fI\f(CI$tm\fI\fR\->url (\fI\f(CI$url\fI\fR)
.Sp
Once an object of this class is instantiated it keeps the \s-1URL\s0 of the resource to which it is
associated. With this method you can retrieve and set that. No special further action is taken
otherwise.
.IP "\fBmtime\fR" 4
.IX Item "mtime"
\&\fI\f(CI$time\fI\fR = \fI\f(CI$tm\fI\fR\->mtime
.Sp
This function returns the \s-1UNIX\s0 time when the resource has been modified last. \f(CW0\fR is returned
if the result cannot be determined. All methods from \s-1LWP\s0 are supported.
.Sp
Special resources are treated as follows:
.RS 4
.ie n .IP """null:""" 4
.el .IP "\f(CWnull:\fR" 4
.IX Item "null:"
always has mtime \f(CW0\fR
.ie n .IP """io:stdin""" 4
.el .IP "\f(CWio:stdin\fR" 4
.IX Item "io:stdin"
always has an mtime 1 second in the future. The idea is that \s-1STDIN\s0 always has new
content.
.ie n .IP """io:stdout""" 4
.el .IP "\f(CWio:stdout\fR" 4
.IX Item "io:stdout"
always has mtime \f(CW0\fR. The idea is that \s-1STDOUT\s0 never changes by itself.
.RE
.RS 4
.RE
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\s-1TM\s0
.SH "AUTHOR INFORMATION"
.IX Header "AUTHOR INFORMATION"
Copyright 200[67], Robert Barta <drrho@cpan.org>, All rights reserved.
.PP
This library is free software; you can redistribute it and/or modify it under the same terms as Perl
itself.  http://www.perl.com/perl/misc/Artistic.html