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Filtering Document Descriptor

The document descriptor (aka src/site/pdf.xml) could be filtered by System properties, Maven project properties and some date properties.

Expression Samples Description
${JAVA_HOME} The JAVA_HOME environment value.
${project.name} The project name as defined by the <name/> tag in pom.xml.
${project.developers[0].email} The email of the first developer as defined by the <developers/> tag in the pom.xml.
${date} The current date displayed in ISO-8601 format (i.e. yyyy-MM-dd), for instance 2009-06-22.
${time} The current time displayed in ISO-8601 format (i.e. HH:mm:ss'Z), for instance 12:26:48Z.
${dateTime} The current dateTime displayed in ISO-8601 format (i.e. yyyy-MM-dd'T'HH:mm:ss'Z), for instance 2009-06-22T12:24:17Z.
${year} ${month} ${day} The single date informations.
${hour} ${minute} ${second} The single time informations.

Example

For instance, if you have defined the following pom.xml and pdf.xml:

<project>
  <modelVersion>4.0.0</modelVersion>

  <version>1.0-SNAPSHOT</version>
  <name>Your project</name>

  ...

  <developers>
    <developer>
      <email>your@email.com</email>
      ...
    </developer>
  </developers>

  ...
</project>

<document xmlns="http://maven.apache.org/DOCUMENT/1.0.1"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/DOCUMENT/1.0.1 http://maven.apache.org/xsd/document-1.0.1.xsd"
  outputName="maven-pdf-plugin-doc-${project.version}">

  <meta>
    <title>User guide of ${project.name} version ${project.version}</title>
    <author>${project.developers[0].email}</author>
  </meta>

  <toc name="Table of Contents">
    ...
  </toc>

  <cover>
    <coverdate>${date}</coverdate> <!-- current date in ISO 8601 format -->
    <!-- <coverdate>${day}/${month}/${year}</coverdate> current date in French format -->
    ...
  </cover>
</document>

The title will be User guide of Your project version 1.0-SNAPSHOT and the author will be your@email.com.