To add piwik (statistics access for openaire)

In the footer add the following code:

  <%@ page import="org.dspace.core.ConfigurationManager" %>
  <%@ page import="org.dspace.content.Item" %>

  <%

  String piwikID = ConfigurationManager.getProperty("piwik.id");
  String baseUrl = ConfigurationManager.getProperty("dspace.hostname");
  String handle;


  try{
  Item item = (Item) request.getAttribute("item");

  // get the handle if the item has one yet
  handle = item.getHandle();
  }
  catch(Exception e){
  	handle = null;
  	//e.printstacktrace();
  }

  %>

  <!-- Piwik -->
  <script type="text/javascript">
    var _paq = _paq || [];
    _paq.push(['trackPageView']);
    _paq.push(['enableLinkTracking']);
    (function() {
      var u="//analytics.openaire.eu/";
      _paq.push(['setTrackerUrl', u+'piwik.php']);
      _paq.push(['setSiteId', <%=piwikID%>]);
      <% if(handle != null){%>
      	_paq.push(['setCustomVariable', 1, 'oaipmhID',"oai:<%= baseUrl %>/<%=handle %>", 'page']);
      <%}%>
      var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
      g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'piwik.js'; s.parentNode.insertBefore(g,s);
    })();
  </script>
  <noscript><p><img src="//analytics.openaire.eu/piwik.php?idsite=<%=piwikID%>" style="border:0;" alt="" /></p></noscript>

And in the build.properties add the piwik.id of the institution.