How to use

qnameFor

method

in

com.hp.hpl.jena.shared.PrefixMapping

@Override
public String qnameFor(String uri) {
  return this.prefixes.qnameFor(uri);
}

/** @see com.hp.hpl.jena.shared.PrefixMapping#qnameFor(java.lang.String) */
public String qnameFor(String uri)
{
  String s = pmapLocal.qnameFor(uri) ;
  if ( pmapGlobal == null )
    return s ;
  if ( s != null )
    return s ;
  if ( pmapGlobal != null )
    return pmapGlobal.qnameFor(uri) ;
  return null ;
}

/** @see com.hp.hpl.jena.shared.PrefixMapping#qnameFor(java.lang.String) */
@Override
public String qnameFor(String uri)
{
  String s = pmapLocal.qnameFor(uri) ;
  if ( pmapGlobal == null )
    return s ;
  if ( s != null )
    return s ;
  if ( pmapGlobal != null )
    return pmapGlobal.qnameFor(uri) ;
  return null ;
}

@Override
public String qnameFor( String uri )
{ return getPrefixMapping().qnameFor( uri ); }

/**
  <p>Present a URI as a SPARQL term, either <>-quoted, or
  as a qname if there's a suitable prefix mapping for it.
  </p>
  
  <p>SPARQL qname local names can't end with ".", so we
  protect against generating illegal SPARQL by an ad-hoc
  check against the URL ending with dot. May need to
  consider other characters too, and may want to push
  this protection into Jena. 
  </p>
*/
public String present( String unsafeURI ) {
  String qName = pm.qnameFor( unsafeURI );
  if (qName == null) {
    return "<" + URIUtils.escapeAsURI(unsafeURI) + ">";
  } else {
    seen.add( qName.substring( 0, qName.indexOf( ':' ) ) );
    return qName;
  }
  
}

@Override public String qnameFor( String uri )
  {
  String result = getBaseMapping().qnameFor( uri );
  if (result == null)
    {
    List<Graph> graphs = poly.getSubGraphs();
    for (int i = 0; i < graphs.size(); i += 1)
      {
      String ss = graphs.get(i).getPrefixMapping().qnameFor( uri );
      if (ss != null) return ss;
      }
    }
  return result;
  }
}

private static String prefixFor(String uri, PrefixMapping mapping)
{
  if ( mapping == null ) return null ;
  
  String pname = mapping.shortForm(uri) ;
  if ( pname != uri && checkValidPrefixName(pname) )
    return pname ;
  pname = mapping.qnameFor(uri) ;
  if ( pname != null && checkValidPrefixName(pname) )
    return pname ;
  return null ;
}
 

private static String prefixFor(String uri, PrefixMapping mapping)
{
  if ( mapping == null ) return null ;
  
  String pname = mapping.shortForm(uri) ;
  if ( pname != uri && checkValidPrefixName(pname) )
    return pname ;
  pname = mapping.qnameFor(uri) ;
  if ( pname != null && checkValidPrefixName(pname) )
    return pname ;
  return null ;
}

@Test public void prefix6()
{
  String uri = "http://example/" ;
  PrefixMapping pmap = new PrefixMappingSDB(defaultPrefixURI, sdb) ;
  pmap.setNsPrefix("ex", uri) ;
  
  assertEquals("ex:foo", pmap.qnameFor("http://example/foo")) ;
}

  @Test public void prefix7()
  {
    String uri1 = "http://example/" ;
    String uri2 = "http://example/ns#" ;
    
    PrefixMapping pmap = new PrefixMappingSDB(defaultPrefixURI, sdb) ;
    pmap.setNsPrefix("ex1", uri1) ;
    pmap.setNsPrefix("ex2", uri2) ;
    assertEquals("ex2:foo", pmap.qnameFor("http://example/ns#foo")) ;
  }        
}