Groovy XML tests

  import javax.xml.parsers.SAXParserFactory
  import javax.xml.validation.SchemaFactory
  import org.xml.sax.SAXException
  import org.xml.sax.SAXParseException
  import org.xml.sax.ErrorHandler
  import javax.xml.transform.Source
  import javax.xml.transform.stream.StreamSource
  import javax.xml.parsers.SAXParser
  import org.xml.sax.XMLReader
  import org.xml.sax.InputSource
  import javax.xml.XMLConstants
  import javax.xml.validation.Schema
  import javax.xml.validation.Validator

  def benchmark = { closure ->  
    start = System.currentTimeMillis()  
    closure.call()  
    now = System.currentTimeMillis()  
    now - start  
  }  

  public class SimpleErrorHandler implements ErrorHandler {

     def xml_lines
     public SimpleErrorHandler(String xml) {
        this.xml_lines = xml.readLines()
     }

      public void warning(SAXParseException e) throws SAXException {
          println "WARNING: "+ e.getMessage() +" "+ e.getLineNumber() +" "+ this.xml_lines[e.getLineNumber()-1]  //e.getSystemId()
      }

      public void error(SAXParseException e) throws SAXException {
          println "ERROR: "+ e.getMessage() +" "+ e.getLineNumber()
          println this.xml_lines[e.getLineNumber()-1] // line of the problem in the XML
          (e.getColumnNumber()-1).times{ print " " } // marks the column
          println "^"
      }

      public void fatalError(SAXParseException e) throws SAXException {
          println "FATAL ERROR: "+ e.getMessage() +" "+ e.getLineNumber() +" " this.xml_lines[e.getLineNumber()-1]
      }
  }

  def duration = benchmark {

      def path = 'C:\\Documents and Settings\\pab\\My Documents\\GitHub\\cabolabs-emrapp\\committed\\composition_3918_0_err.xml'
      def xml = new File(path).text
      
      //println xml
      
      // XSD Validation: 2 ways, parsing or with validator. The result is the same, less code with validator.
      
      // Validate with parse 1
      SAXParserFactory factory = SAXParserFactory.newInstance()
      factory.setValidating(false)
      factory.setNamespaceAware(true)
      
      // Common code
      SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI)
      Schema schema = schemaFactory.newSchema(
          [ new StreamSource("C:\\Documents and Settings\\pab\\My Documents\\GitHub\\cabolabs-ehrserver\\xsd\\Version.xsd") ] as Source[]
        )
        
      // VAlidate with parse 2
      factory.setSchema( schema )
      SAXParser parser = factory.newSAXParser()
      XMLReader reader = parser.getXMLReader()
      reader.setErrorHandler(new SimpleErrorHandler(xml))
      reader.parse(new InputSource(new StringReader(xml)))
      
      // Validate with validator
  //    Validator validator = schema.newValidator()
  //    validator.setErrorHandler(new SimpleErrorHandler(xml))
  //    validator.validate(new StreamSource(new StringReader(xml)))
  }

  println "execution took ${duration} ms"