gov.nasa.pds.tools.label.LabelErrorHandler Maven / Gradle / Ivy

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//	Copyright 2009-2018, by the California Institute of Technology.
//	ALL RIGHTS RESERVED. United States Government Sponsorship acknowledged.
//	Any commercial use must be negotiated with the Office of Technology 
//	Transfer at the California Institute of Technology.
//	
//	This software is subject to U. S. export control laws and regulations 
//	(22 C.F.R. 120-130 and 15 C.F.R. 730-774). To the extent that the software 
//	is subject to U.S. export control laws and regulations, the recipient has 
//	the responsibility to obtain export licenses or other export authority as 
//	may be required before exporting such information to foreign countries or 
//	providing access to foreign nationals.
//	
//	$Id$
//

package gov.nasa.pds.tools.label;

import java.net.MalformedURLException;
import java.net.URL;

import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

import gov.nasa.pds.tools.validate.ProblemDefinition;
import gov.nasa.pds.tools.validate.ProblemHandler;
import gov.nasa.pds.tools.validate.ProblemType;
import gov.nasa.pds.tools.validate.ValidationProblem;

/**
 * @author pramirez, mcayanan
 * 
 */
public class LabelErrorHandler implements ErrorHandler {
  private ProblemHandler handler;

  public LabelErrorHandler(ProblemHandler handler) {
    this.handler = handler;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.xml.sax.ErrorHandler#error(org.xml.sax.SAXParseException)
   */
  @Override
  public void error(SAXParseException exception) throws SAXException {
    addProblem(ExceptionType.ERROR, ProblemType.SCHEMA_ERROR, 
        exception.getMessage(), exception.getSystemId(), 
        exception.getLineNumber(), 
        exception.getColumnNumber());
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.xml.sax.ErrorHandler#fatalError(org.xml.sax.SAXParseException)
   */
  @Override
  public void fatalError(SAXParseException exception) throws SAXException {
    addProblem(ExceptionType.ERROR, ProblemType.SCHEMA_ERROR, 
        exception.getMessage(), exception.getSystemId(), 
        exception.getLineNumber(), 
        exception.getColumnNumber());
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.xml.sax.ErrorHandler#warning(org.xml.sax.SAXParseException)
   */
  @Override
  public void warning(SAXParseException exception) throws SAXException {
    addProblem(ExceptionType.WARNING, ProblemType.SCHEMA_WARNING, 
        exception.getMessage(), exception.getSystemId(), 
        exception.getLineNumber(), 
        exception.getColumnNumber());
  }

  private void addProblem(ExceptionType severity, ProblemType type, 
      String message, String systemId, int lineNumber, int columnNumber) {
    URL url = null;
    try {
      url = new URL(systemId);
    } catch (MalformedURLException mu) {
      //Ignore. Should not happen!!!
    }
    handler.addProblem(new ValidationProblem(
        new ProblemDefinition(severity, type, message), 
        url, 
        lineNumber, 
        columnNumber));
  }
}