package at.gv.egovernment.moa.id.auth.parser;

import java.util.List;

import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import at.gv.egovernment.moa.id.ParseException;
import at.gv.egovernment.moa.util.DOMUtils;

/**
 * Parses an <code>&lt;ErrorResponse&gt;</code>.
 * 
 * @author Stefan Knirsch
 * @version $Id$
 */

public class ErrorResponseParser {
  
  /**
   * The error code included in this error response.
   * <code>1000</code> is used as default value, if some problems occur on
   * evaluating the error response.
   */
  private String errorCode_ = "1000";
  
  /**
   * The error info included in this error response.
   * <code>&lt;Unklassifizierter Fehler.&gt;</code> is used as default value, 
   * if some problems occur on evaluating the error response.
   */
  private String errorInfo_ = "Unklassifizierter Fehler.";

  
  /**
   * This Constructor extracts the error code and error info included in this
   * error response. 
   * 
   * @param errorElement    The error element. This is the root element of
   *                        the error response.
   */
  public ErrorResponseParser(Element errorElement) throws ParseException {
    if (errorElement != null) {
      String namespace = errorElement.getNamespaceURI();
      NodeList nl = errorElement.getElementsByTagNameNS(namespace, "ErrorCode");
      if (nl.getLength() == 1) {
        errorCode_ = ((Element)nl.item(0)).getFirstChild().getNodeValue();
      }
      nl = errorElement.getElementsByTagNameNS(namespace, "Info");
      if (nl.getLength() == 1) {
        errorInfo_ = ((Element)nl.item(0)).getFirstChild().getNodeValue();
      }
    }
  }

  /**
   * Returns the error code included in this error response.
   */
  public String getErrorCode() {
    return errorCode_ ;    
  }		

  /**
   * Returns the information included in this error response.
   * @return The error infomation String
   */
  public String getErrorInfo() {
    return errorInfo_ ;
  }   


}