/[cvs]/nfo/perl/libs/XML/XUpdate/XSLT.pm
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revision 1.5 by joko, Tue May 6 14:24:06 2003 UTC revision 1.7 by joko, Tue May 13 09:32:22 2003 UTC
# Line 7  Line 7 
7  #    $Id$  #    $Id$
8  #  #
9  #    $Log$  #    $Log$
10    #    Revision 1.7  2003/05/13 09:32:22  joko
11    #    minor update to pod
12    #
13    #    Revision 1.6  2003/05/07 03:11:28  joko
14    #    updated pod: new section "References", added item to "Todo" section
15    #
16  #    Revision 1.5  2003/05/06 14:24:06  joko  #    Revision 1.5  2003/05/06 14:24:06  joko
17  #    doesn't use Carp any more  #    doesn't use Carp any more
18  #    updated pod  #    updated pod
# Line 42  Line 48 
48    xupdate - Process XUpdate commands against an XML document.    xupdate - Process XUpdate commands against an XML document.
49    
50    
51  =head3 Their implementations differ:  =head4 Their implementations differ:
52    
53      1. xupdate (by Petr Pajas) uses ...      1. xupdate (by Petr Pajas) uses ...
54      XML::XUpdate::LibXML - Simple implementation of XUpdate format      XML::XUpdate::LibXML - Simple implementation of XUpdate format
# Line 57  Line 63 
63      2. This xupdate attempts to implement the XUpdate specs using XSLT only.      2. This xupdate attempts to implement the XUpdate specs using XSLT only.
64            
65    
66  =head3 Yet another xupdate - facts in short:  =head4 Yet another xupdate - facts in short:
67    
68    S: It would be nice to have a pure perl thingy which does (almost) the same stuff....    S: It would be nice to have a pure perl thingy which does (almost) the same stuff....
69        
# Line 73  Line 79 
79    S?: Proposal: XML::XUpdate::XSLT::API uses XML::XUpdate::XSLT::CRUD    S?: Proposal: XML::XUpdate::XSLT::API uses XML::XUpdate::XSLT::CRUD
80    
81    
82  =head4 Todo  =head3 References
83    
84        - XUpdate:
85          Requirements: http://www.xmldb.org/xupdate/xupdate-req.html
86          Working Draft: http://www.xmldb.org/xupdate/xupdate-wd.html
87        - XML API:
88        - XML::XUpdate::LibXML: http://search.cpan.org/author/PAJAS/XML-XUpdate-LibXML-0.4.0/lib/XML/XUpdate/LibXML.pm
89        - XSL / XSLT:
90          http://www.w3.org/TR/xslt
91          http://www.xsl-rp.de/
92          http://xml.klute-thiemann.de/w3c-de/REC-xslt-20020318/
93          http://xmlxslt.sourceforge.net/
94        - misc pointers:
95          "Re: Modify XML documents": http://aspn.activestate.com/ASPN/Mail/Message/perl-xml/1265431
96          XSL Extensions: http://xmlsoft.org/XSLT/extensions.html
97          EXSLT: http://www.exslt.org/set/functions/difference/index.html
98          "how to insert element at required position in document tree?": http://p2p.wrox.com/archive/xslt/2001-06/98.asp
99          XML APIs for Databases: http://www.javaworld.com/javaworld/jw-01-2000/jw-01-dbxml.html
100    
101    
102    =head3 Todo
103    
104    o What about proper encoding? (ISO-8859-1 or UTF-8)    o What about proper encoding? (ISO-8859-1 or UTF-8)
105    o Is it possible to create the required "xsl_template.xml" at runtime via XSL itself?    o Is it possible to create the required "xsl_template.xml" at runtime via XSL itself?
106    o Cache contents of external files (*.xml). Performance!    o Cache contents of external files (*.xml). Performance!
107    o Can exception / error-code handling be improved somehow?    o Can exception / error-code handling be improved somehow?
108        Esp.: It would be interesting, if the XUpdate payload actually could be applied, or not...        Esp.: It would be interesting, if the XUpdate payload actually could be applied, or not...
109      o Conditional processing: <xupdate:if>, etc.
110        
111    
112  =cut  =cut
# Line 153  sub open_document { Line 180  sub open_document {
180  sub open_xupdate {  sub open_xupdate {
181    my $self = shift;    my $self = shift;
182    my $xml = shift;    my $xml = shift;
183    # FIXME: check for filename, filehandle and U<RL (etc.)    # FIXME: check for filename, filehandle and URL (etc.)
184    $self->{XML}->{xupdate} = $xml;    $self->{XML}->{xupdate} = $xml;
185  }  }
186    
# Line 183  sub _apply { Line 210  sub _apply {
210    my $self = shift;    my $self = shift;
211        
212    # debug - print the calculated xsl on STDERR    # debug - print the calculated xsl on STDERR
213    #print STDERR $self->get_stylesheet("_worker"), "\n";    print STDERR $self->get_stylesheet("_worker"), "\n";
214        
215    #return;    #return;
216    $self->{XSLT_ENGINE_LIVE} = XML::XSLT->new(    $self->{XSLT_ENGINE_LIVE} = XML::XSLT->new(
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