Class BaseXServlet

basex-api/src/main/java/org/basex/http/BaseXServlet.java:27–112

Base class for various servlets. @author BaseX Team, BSD License @author Christian Gruen

 * @author Christian Gruen
 */
public abstract class BaseXServlet extends HttpServlet {
  /** Servlet-specific user. */
  private String username;
  /** Servlet-specific authentication method. */
  private AuthMethod auth;

  @Override
  public void init(final ServletConfig config) throws ServletException {
    super.init(config);

    final HTTPContext hc = HTTPContext.get();
    try {
      hc.init(config.getServletContext());
    } catch(final IOException ex) {
      throw new ServletException(ex);
    }

    // parse servlet-specific user and authentication method
    for(final String n : Collections.list(config.getInitParameterNames())) {
      String name = n;
      final String value = config.getInitParameter(name);
      if(name.startsWith(Prop.DBPREFIX)) {
        name = name.substring(Prop.DBPREFIX.length());
        if(name.equalsIgnoreCase(StaticOptions.USER.name())) {
          username = value;
        } else if(name.equalsIgnoreCase(StaticOptions.AUTHMETHOD.name())) {
          auth = AuthMethod.valueOf(value);
        }
      }
    }
    final Context ctx = hc.context();
    if(ctx.soptions.get(StaticOptions.LOGTRACE)) ctx.setExternal(ctx.log);
  }

  @Override
  public final void service(final HttpServletRequest request, final HttpServletResponse response)
      throws IOException {

    final HTTPConnection conn = new HTTPConnection(request, response, auth);
    try {
      conn.authenticate(username);
      run(conn);
    } catch(final HTTPException ex) {
      conn.error(ex.getStatus(), Util.message(ex));
    } catch(final LoginException ex) {
      conn.error(SC_UNAUTHORIZED, Util.message(ex));
    } catch(final QueryException ex) {
      int code = SC_INTERNAL_SERVER_ERROR;
      boolean full = conn.context.soptions.get(StaticOptions.RESTXQERRORS);
      final QNm qname = ex.qname();
      if(Token.eq(qname.uri(), QueryText.REST_URI)) {
        final Value value = ex.value();
        if(value instanceof final ANum num) code = (int) num.itr();
        full = false;
      }
      conn.error(code, full ? Util.message(ex) : ex.getLocalizedMessage());
    } catch(final IOException ex) {
      final boolean full = conn.context.soptions.get(StaticOptions.RESTXQERRORS);