/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jbpm.pvm.internal.xml;

import java.io.Serializable;

import org.xml.sax.SAXParseException;

/**
 * a unification for an XML parsing errors and DOM interpretation problems, see also {@link Parser}.
 * 
 * See also <a href="./Parser.html#problems">'Problems'</a>
 * @author Tom Baeyens
 */
public class ProblemImpl implements Serializable, Problem {
  
  private static final long serialVersionUID = 1L;

  public static final String TYPE_ERROR = "error";
  public static final String TYPE_WARNING = "warning";
  public static final String TYPE_XML_VALIDATION_ERROR = "xml validation error";
  public static final String TYPE_XML_VALIDATION_WARNING = "xml validation warning";

  String resource;
  String type;
  Integer line;
  Integer column;
  String msg;
  Throwable cause;

  public ProblemImpl(String msg, Exception e, String type) {
    this.type = type;
    this.msg = msg;
    this.cause = e;
    if (e instanceof SAXParseException) {
      SAXParseException spe = (SAXParseException) e;
      this.resource = spe.getPublicId();
      this.line = spe.getLineNumber();
      this.column = spe.getColumnNumber();
    }
  }

  public Throwable getCause() {
    return cause;
  }
  public void setCause(Throwable cause) {
    this.cause = cause;
  }
  public int getColumn() {
    return column;
  }
  public void setColumn(int columnNumber) {
    this.column = columnNumber;
  }
  public int getLine() {
    return line;
  }
  public void setLine(int lineNumber) {
    this.line = lineNumber;
  }
  public String getMsg() {
    return msg;
  }
  public void setMsg(String msg) {
    this.msg = msg;
  }
  public String getResource() {
    return resource;
  }
  public void setResource(String resource) {
    this.resource = resource;
  }
  public String getSeverity() {
    return type;
  }
  public void setSeverity(String severity) {
    this.type = severity;
  }
  
  public String toString() {
  	StringBuilder text = new StringBuilder();
    text.append(type);
    text.append(": ");
    text.append(msg);
    text.append(" ");
    
    if ((line!=null) || (column!=null) || (resource!=null)) {
      text.append("[");
      if (line!=-1) {
        text.append("line="+line+" ");
      }
      
      if (column!=-1) {
        text.append("column="+column+" ");
      }
      
      if (resource!=null) {
        text.append("resource="+resource+" ");
      }
      text.append("]");
    }

    if (cause!=null) {
      text.append(": " + cause.toString());
    }
    
    return text.toString(); 
  }
}