/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2011, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.core.db;
  
  
  import javax.naming.Context;
  import javax.naming.InitialContext;
  import javax.sql.DataSource;
  
  import org.xml.sax.Attributes;
  
  import ch.qos.logback.core.joran.action.Action;
  import ch.qos.logback.core.joran.spi.InterpretationContext;
  import ch.qos.logback.core.joran.util.PropertySetter;
  import ch.qos.logback.core.util.OptionHelper;
  
  /**
   * 
   * @author Ceki Gulcu
   *
   */
  public class BindDataSourceToJNDIAction extends Action {
    
    static final String DATA_SOURCE_CLASS = "dataSourceClass";
    static final String URL = "url";
    static final String USER = "user";
    static final String PASSWORD = "password";
  
    /**
     * Instantiates an a data source and bind it to JNDI
     * Most of the required parameters are placed in the ec.substitutionProperties
     */
    public void begin(
        InterpretationContext ec, String localName, Attributes attributes) {
      String dsClassName = ec.getProperty(DATA_SOURCE_CLASS);
  
      if (OptionHelper.isEmpty(dsClassName)) {
        addWarn("dsClassName is a required parameter");
        ec.addError("dsClassName is a required parameter");
  
        return;
      }
  
      String urlStr = ec.getProperty(URL);
      String userStr = ec.getProperty(USER);
      String passwordStr = ec.getProperty(PASSWORD);
  
      try {
        DataSource ds =
          (DataSource) OptionHelper.instantiateByClassName(dsClassName, DataSource.class, context);
  
        PropertySetter setter = new PropertySetter(ds);
        setter.setContext(context);
  
        if (!OptionHelper.isEmpty(urlStr)) {
          setter.setProperty("url", urlStr);
        }
  
        if (!OptionHelper.isEmpty(userStr)) {
          setter.setProperty("user", userStr);
        }
  
        if (!OptionHelper.isEmpty(passwordStr)) {
          setter.setProperty("password", passwordStr);
        }
  
        Context ctx = new InitialContext();
        ctx.rebind("dataSource", ds);
      } catch (Exception oops) {
        addError(
          "Could not bind  datasource. Reported error follows.", oops);
        ec.addError("Could not not bind  datasource of type [" + dsClassName + "].");
      }
    }
  
    public void end(InterpretationContext ec, String name) {
    }
  }