Groovy XML validator test

  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

  class VersionValidator {

     def errors = []
     
     public boolean validate(String xml)
     {
        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 validator
        Validator validator = schema.newValidator()
        ErrorHandler errorHandler = new SimpleErrorHandler(xml)
        validator.setErrorHandler(errorHandler)
        validator.validate(new StreamSource(new StringReader(xml)))
        
        this.errors = errorHandler.getErrors()
        
        return !errorHandler.hasErrors() // If validate() (==!hasErrors) is false, then the user can .getErrors()
     }
     
     public List<String> getErrors()
     {
        return this.errors
     }
     
     private class SimpleErrorHandler implements ErrorHandler {
       
        def exceptions = []
        def xml_lines
        
        public SimpleErrorHandler(String xml)
        {
           this.xml_lines = xml.readLines()
        }
     
        public void warning(SAXParseException e) throws SAXException
        {
           this.exceptions << e
        }
     
        public void error(SAXParseException e) throws SAXException
        {
           this.exceptions << e
        }
     
        // if a fatal error occurs, then this stop validating
        public void fatalError(SAXParseException e) throws SAXException
        {
           this.exceptions << e
        }
        
        public boolean hasErrors()
        {
           return this.exceptions.size() > 0
        }
        
        public List<String> getErrors()
        {
           def ret = []
           this.exceptions.eachWithIndex { e, i ->
              
              ret << "ERROR "+ i +") "+ e.getMessage() +"\nline #: "+ e.getLineNumber() +"\n>>> "+
                     this.xml_lines[e.getLineNumber()-1].trim() // line of the problem in the XML
              //        (e.getColumnNumber()-1).times{ print " " } // marks the column
              //        println "^"
           }
           return ret
        }
     }
  }

  def path = 'C:\\Documents and Settings\\pab\\My Documents\\GitHub\\cabolabs-emrapp\\committed\\composition_3918_0_err.xml'
  def xml = new File(path).text
  def validator = new VersionValidator()
  if (!validator.validate(xml))
  {
     validator.getErrors().each { println it }
  }
  else
  {
     println "iuju!!!"
  }