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/**
 * Legato is a configurable, lightweight web mapping client that can be
 * easily embedded into web pages and portals, CMS and individual web
 * applications. Legato is implemented in JavaScript and based on the
 * popular open source library OpenLayers.
 *
 * Copyright (C) 2010  disy Informationssysteme GmbH, http://www.disy.net
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */

package net.disy.ogc.ows.v_1_1_0;

import java.io.PrintWriter;
import java.io.StringWriter;

import net.opengis.ows.v_1_1_0.ExceptionReport;
import net.opengis.ows.v_1_1_0.ExceptionType;

import org.apache.commons.lang.Validate;

/*
 * OWS exception constructed with the OWS {@link ExceptionReport}.
 */
public class OwsException extends Exception {

  private static final long serialVersionUID = 1L;

  private final ExceptionReport exceptionReport;

  public ExceptionReport getExceptionReport() {
    return exceptionReport;
  }

  /**
   * Constructs a new OWS exception.
   *
   * @param exceptionReport
   *            exception report returned by the web service.
   */
  public OwsException(ExceptionReport exceptionReport) {
    Validate.notNull(exceptionReport);
    this.exceptionReport = exceptionReport;
  }

  public OwsException(String code, String text, Throwable ex) {
    super(ex);
    Validate.notNull(code);
    final ExceptionReport newExceptionReport = new ExceptionReport();
    newExceptionReport.setVersion("1.1.0"); //$NON-NLS-1$

    final ExceptionType exception = new ExceptionType();

    exception.setExceptionCode(code);
    if (text != null) {
      exception.getExceptionText().add(text);
    }
    if (ex != null) {
      exception.getExceptionText().add(toString(ex));
    }
    newExceptionReport.getException().add(exception);
    exceptionReport = newExceptionReport;
  }

  public OwsException(String code, String text) {
    this(code, text, null);
  }

  public OwsException(String code, Throwable ex) {
    this(code, null, ex);
  }

  private static String toString(Throwable ex) {
    final StringWriter sw = new StringWriter();
    ex.printStackTrace(new PrintWriter(sw));
    return sw.toString();
  }

}