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.\" ========================================================================
.\"
.IX Title "GO::IO::RDFXML 3pm"
.TH GO::IO::RDFXML 3pm "2021-01-09" "perl v5.32.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
.Vb 1
\&  GO::IO::RDFXML \- dump GO terms as xml
.Ve
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&    my $apph = GO::AppHandle\->connect(\-d=>$go, \-dbhost=>$dbhost);
\&    my $term = $apph\->get_term({acc=>00003677});
\&
\&    #### ">\-" is STDOUT
\&    my $out = new FileHandle(">\-");  
\&    
\&    my $xml_out = GO::IO::XML\->new(\-output=>$out);
\&    $xml_out\->start_document();
\&    $xml_out\->draw_term($term);
\&    $xml_out\->end_document();
.Ve
.PP
\&\s-1OR:\s0
.PP
.Vb 3
\&    my $apph = GO::AppHandle\->connect(\-d=>$go, \-dbhost=>$dbhost);
\&    my $term = $apph\->get_node_graph(\-acc=>00003677, \-depth=>2);
\&    my $out = new FileHandle(">\-");  
\&    
\&    my $xml_out = GO::IO::XML(\-output=>$out);
\&    $xml_out\->start_document();
\&    $xml_out\->draw_node_graph($term, 3677);
\&    $xml_out\->end_document();
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Utility class to dump \s-1GO\s0 terms as xml.  Currently you just call
start_ducument, then draw_term for each term, then end_document.
.PP
If there's a need I'll add draw_node_graph, draw_node_list, etc.
.SS "new"
.IX Subsection "new"
.Vb 3
\&    Usage   \- my $xml_out = GO::IO::XML\->new(\-output=>$out);
\&    Returns \- None
\&    Args    \- Output FileHandle
.Ve
.PP
Initializes the writer object.  To write to standard out, do:
.PP
my \f(CW$out\fR = new FileHandle(\*(L">\-\*(R");
my \f(CW$xml_out\fR = new \s-1GO::IO::XML\s0(\-output=>$out);
.SS "xml_header"
.IX Subsection "xml_header"
.Vb 3
\&    Usage   \- $xml_out\->xml_header;
\&    Returns \- None
\&    Args    \- None
.Ve
.PP
start_document prints the \*(L"Content-type: text/xml\*(R" statement.
If creating a cgi script, you should call this before start_document.
.SS "start_document"
.IX Subsection "start_document"
.Vb 3
\&    Usage   \- $xml_out\->start_document(\-timestamp=>$time);
\&    Returns \- None
\&    Args    \- optional: timestamp string, pre\-formatted
.Ve
.PP
start_ducument takes care of the fiddly bits like xml declarations,
namespaces, etc.  It draws the initial tags and leaves the document
ready to add go:term nodes.
.SS "end_document"
.IX Subsection "end_document"
.Vb 1
\&    Usage   \- $xml_out\->end_document();
.Ve
.PP
Call this when done.
.SS "draw_node_graph"
.IX Subsection "draw_node_graph"
.Vb 5
\&    Usage   \- $xml_out\->draw_node_graph(\-graph=>$graph);
\&    Returns \- None
\&    Args    \-graph=>$node_graph, 
\&            \-focus=>$acc,                      ## optional
\&            \-show_associations=>"yes" or "no"  ## optional
.Ve
.SS "draw_term"
.IX Subsection "draw_term"
.Vb 7
\&    Usage   \- $xml_out\->draw_term();
\&    Returns \- None
\&    Args    \-term=>$term, 
\&            \-graph=>$graph, 
\&            \-is_focus=>"yes" or "no",    ## optional
\&            \-show_associations=>"yes" or "no",    ## optional
\&            \-show_terms=>"yes" or "no",    ## optional, just draws associations
.Ve
.SS ""
.IX Subsection ""
sub characters
.PP
.Vb 2
\&  This is simply a wrapper to XML::Writer\->characters
\&  which strips out any non\-ascii characters.
.Ve
.SS ""
.IX Subsection ""
sub dataElement
.PP
.Vb 2
\&  This is simply a wrapper to XML::Writer\->dataElement
\&  which strips out any non\-ascii characters.
.Ve