Emetsger__ExampleAspects__JscholarshipSvnInformation

<xmlui>
<aspects>
...
<aspect name="JScholarship SVN Version" path="JScholarshipVersion/"/>
...
</aspects>
<themes>
...
<theme name="Build Information" regex="^svn$" path="BuildInformation/" />
...
</themes>
</xmlui>

<!--
Aspect which emits JHU Subversion information found in 'svnbuild.properties' into
the <pageMeta> of the DRI
-->
<map:sitemap xmlns:map="http://apache.org/cocoon/sitemap/1.0">
<map:components>
<map:transformers>
<map:transformer name="JscholarshipVersion" src="edu.jhu.library.dspace.app.xmlui.aspect.general.JscholarshipVersionTransformer"/>
</map:transformers>
</map:components>
<map:pipelines>
<map:pipeline>
<map:generate/>
<map:transform type="JscholarshipVersion"/>
<map:serialize type="xml"/>
</map:pipeline>
</map:pipelines>
</map:sitemap>

package edu.jhu.library.dspace.app.xmlui.aspect.general;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer;
import org.dspace.app.xmlui.utils.UIException;
import org.dspace.app.xmlui.wing.WingException;
import org.dspace.app.xmlui.wing.element.Body;
import org.dspace.app.xmlui.wing.element.PageMeta;
import org.dspace.authorize.AuthorizeException;
import org.xml.sax.SAXException;

import java.io.IOException;
import java.io.InputStream;
import java.sql.SQLException;
import java.util.Enumeration;
import java.util.Properties;

/**

• Emits Subversion revision information of JScholarship found in the resource 'svnbuild.properties' to the DRI.
  */
  public class JscholarshipVersionTransformer extends AbstractDSpaceTransformer
  {
  private static final Log log = LogFactory.getLog( JscholarshipVersionTransformer.class );
  private final static String buildResource = "/svnbuild.properties";
  private final static String metadataElementProperty = "meta.element";
  private final static String defaultMetadataElementPropertyValue = "svn";
  private final static Properties buildInfo = new Properties();
  private static boolean available = false;
  static
  {
  InputStream is = JscholarshipVersionTransformer.class.getResourceAsStream( buildResource );
  if ( is != null )
  {
  try
  {
  buildInfo.load( is );
  if ( buildInfo.size() > 0 )
  {
  available = true;
  }
  }
  catch ( IOException e )
  {
  log.warn( "Unable to load Subversion build information: " + e.getMessage() );
  System.err.println( "Unable to load Subversion build information: " + e.getMessage() );
  }
  }
  else
  {
  log.info( "Build information will not be availible. Resource " + buildResource + " not found." );
  }
  }

public void addBody(Body body) throws SAXException, WingException, UIException, SQLException, IOException, AuthorizeException
{
// To avoid an empty body.
body.addDivision( "buildinfo" ).addPara( " " );
}

public void addPageMeta( PageMeta pageMeta )
throws SAXException, WingException, UIException, SQLException, IOException, AuthorizeException
{
String element = buildInfo.getProperty( metadataElementProperty, defaultMetadataElementPropertyValue );

if ( available )
{
pageMeta.addMetadata( element, "enabled" ).addContent( "true" );

Enumeration props = buildInfo.propertyNames();
while ( props.hasMoreElements() )
{
String qualifier = (String)props.nextElement();
String metadataValue = buildInfo.getProperty( qualifier, "" );
pageMeta.addMetadata( element, qualifier ).addContent( metadataValue );
}
}
else
{
pageMeta.addMetadata( element, "enabled" ).addContent( "false" );
}
}
}