Earthly Powers

Fast Infoset 1.1: Improvements to API when using External Vocabularies

I bumped up the latest stable version of FastInfoset to 1.1, to reflect changes i made to the org.jvnet.fastinfoset API (in addition to general tidying up and removing some crud) that improves support for external vocabularies.

In a previous blog i presented some code that showed how to create and utilize external vocabularies. This code is a bit messy and also depends on stuff that can potentially change in the future. So in an attempt not to pull the rug from under developers feet i have created some classes in the org.jvnet.fastinfoset package. You can still use the mechanism but i cannot guarantee that it will not change in the future.

As in the previous blog the following code will prepare information from schema and sample documents to generate a vocabulary:

  String args[] = ... // e.g. args from main
  // Process the schema
  SchemaProcessor sp = new SchemaProcessor(
      new File(args[0]).toURL(), true);
  sp.process();

  // Procese the sample documents
  SAXParserFactory spf = SAXParserFactory.newInstance();
  spf.setNamespaceAware(true);
  SAXParser p = spf.newSAXParser();
  FrequencyHandler fh = new FrequencyHandler(sp);
  for (int i = 1; i < args.length; i++) {
    p.parse(new File(args[i]), fh);
  }

  Vocabulary v = fh.getVocabulary();
  String externalVocabularyURI = args[0];

  ExternalVocabulary ev = new ExternalVocabulary(
      externalVocabularyURI,
      v);
  FastInfosetWriter writer = 
      new SAXDocumentSerializer();
  writer.setExternalVocabulary(ev);

  FastInfosetReader reader = new SAXDocumentParser();
  Map externalVocabularyMap = new HashMap();
  externalVocabularyMap.put(externalVocabularyURI, 
      ev);
  reader.setExternalVocabularies(externalVocabularyMap);

Posted at 10:28AM Jun 02, 2006 by Paul Sandoz in Fast Infoset  |  Comments[1]