XProc steps

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p:delete

<p:declare-step type="p:delete">
   <p:input port="source"/>
   <p:output port="result"/>
   <p:option name="match" required="true"/> <!-- XSLTMatchPattern -->
</p:declare-step>

With the help of this step, contents from the XML input document can be deleted. These contents are determined by a XSLT expression.
The output is done via the result port.

Example

All the information about the cast shall be removed from the known example document.

<?xml version="1.0" encoding="UTF-8"?>
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" xmlns:c="http://www.w3.org/ns/xproc-step" version="1.0">
   <p:input port="source">
      <p:document href="FilmCollection.xml"/>
   </p:input>
   <p:output port="result"/>
   <p:delete match="/FilmCollection/Film/Cast"/>
</p:declare-step>

In the “match“ attribute of <p:delete> an appropriate expression defines that all “Cast“ elements shall be removed from the input document.

The following output is generated by the XProc processor (excerpt):

<FilmCollection>
   <Film>
      <Title>Star Wars: Episode IV - A New Hope</Title>
      <Year>1978</Year>
      <Genre>SciFi</Genre>
      <Director>George Lucas</Director>
      <Producer>George Lucas</Producer>
      <Duration>121 min</Duration>
      <Author>George Lucas</Author>
   </Film>
   <Film>
...