Specifying a context node

• Note lack of doc() function in this query:

     for $t in /bib/book/title
     return
        $t 
  

• Therefore context node must be provided by environment.

• With Saxon we can use the -s command line flag to specify the input file:

  % java  -cp saxon7.jar net.sf.saxon.Query -s bib.xml query1.5
  <?xml version="1.0" encoding="UTF-8"?>
  <title>TCP/IP Illustrated</title>
  <?xml version="1.0" encoding="UTF-8"?>
  <title>Advanced Programming in the Unix Environment</title>
  <?xml version="1.0" encoding="UTF-8"?>
  <title>Data on the Web</title>
  <?xml version="1.0" encoding="UTF-8"?>
  <title>The Economics of Technology and Content for Digital TV</title>