import java.sql.*;
import java.util.*;
import java.io.*;
 
/* 
 * Address
 *
 * $Author: $
 * $Date: $
 * $Revisions: $
 * $Source: $
 *  To create a new Address
 * 
 *    Address instance = new Address
 *     .. call the set methods                       // Set the fields as needed
 *    String key = instance.store();                 // .store() inserts record to database
 *                                                   // DB sequence "driver_address_seq" is used to get
 *                                                   // next primary key
 *
 *  To get a Address from the database
 *                                                       // To retrieve a Address from database
 *    Address instance = new Address("1234");              // pass the primary key to constructor
 *    ... call the get() methods                         // and then call the getter methods             
 * 
 *
 *  To update an existing Address                 
 *                                                        // To update an existing OrderObj
 *    Address instance = new Address("1234");               // get it from database, call the setter methods
 *     .. call the set methods                            // and then call store()
 *    instance.store(); 
 *
 *
 */
public class Address {

  private long key = 0;
  private String addressLine1 = "";
  private String addressLine2 = "";
  private String city = "";
  private String state = "";
  private String zip = "";
  private GregorianCalendar dateMovedIn = null;
  private GregorianCalendar created = null;
  private GregorianCalendar updated = null;


  private boolean isDirty = false;

  /**
   *
   * To get an existing Address call constructor with primary key
   *
   */
  public Address(long keyIn) {  
    Connection conn = null;
    Statement stmt = null;
    try {
     conn = getConnection();
     stmt = conn.createStatement();
    } catch (SQLException exp) {             
      log("Driver(key) constructor, Exception: " + exp.getMessage());
    } 

    key = keyIn;
    ResultSet rset = doSelect(conn, stmt);

    try {
      rset.close();
      stmt.close();
      conn.close();
    } catch (SQLException exp) {             
      log("Address(key) constructor, Exception: " + exp.getMessage());
    } 


  }


  /**
   *
   * To populate a Address where the sql select was done earlier by another object
   * call this constructor with the result set.
   *   
   */
  public Address(ResultSet rset) {  
    applyResultSet(rset);                         //Populate this object with values from db 

  }

  /***
   * To create a new Address call no args constructor 
   * then call the "set()" methods, and finally "store()"
   */
  public Address() {  

  }


  /**
   *
   * Persist our properties to the db.  Also call store() on any dependent objects.
   * If no Connection was passed in then we are responisible for beginning the transaction
   * Turn off auto commit, and rollback if we get exception from this or any dependent objects
   *
   */
  public long store() throws Exception { 
    long returnKey = key;
    Connection conn = getConnection();
    try { 
      conn.setAutoCommit(false); 
      log("Address.store(), Starting transaction");
      returnKey = store(conn);
      conn.commit();  
      log("Address.store(), No Exceptions Committing");
    }
    catch (Exception exp) {    //Any exception thrown by store causes a rollback. 
      log("Address.store(), Exception: " + exp.getMessage());
      try {                      
        log("Address.store(), Failed: RollingBack");
        conn.rollback();
      } catch (SQLException rollbackExp) {             
        log("Address.store(), Exception: " + rollbackExp.getMessage());
      } 
      throw exp;  //Throw exception back up so that user interface can report error
    }
    finally { 
      try {
        conn.close();
      } catch (SQLException closeExp) {             
        log("Address.store(), Exception: " + closeExp.getMessage());
      } 
    }
    return returnKey;

  }


  /**
   *
   * Persist our properties to the db.  Also call store() on any dependent objects.
   * If a Connection was passed in then a object higher up is handling the transactions 
   * for us. Throw on any exceptions so that the higher object can catch them and rollback. 
   * This method will do an insert for new Address and a update for existing ones    
   *
   */
  public long store(Connection conn) throws Exception { 
    long returnKey = key;
      if ( key == 0 ) {   
        returnKey = insertToDB(conn); 
      }
      else { 
        if ( isDirty ) { updateOnDB(conn); }
      }
    return returnKey;
  }


  /**
   *
   */
  private ResultSet doSelect(Connection conn, Statement stmt) { 
    ResultSet rset = null;

    try { 
      String sqlStmt = "select  \n" + 
      " driver_address.address_id as driver_address_address_id, \n" +
      " driver_address.address_line1 as driver_address_address_line1, \n" +
      " driver_address.address_line2 as driver_address_address_line2, \n" +
      " driver_address.city as driver_address_city, \n" +
      " driver_address.state as driver_address_state, \n" +
      " driver_address.zip as driver_address_zip, \n" +
      " driver_address.date_moved_in as driver_address_date_moved_in, \n" +
      " driver_address.created as driver_address_created, \n" +
      " driver_address.updated as driver_address_updated  \n" + 
      " from driver_address driver_address    \n" +  
      " where driver_address.address_id = " + key ;
      log("sqlStmt=" + sqlStmt);
      rset = stmt.executeQuery(sqlStmt);
      rset.next();
      applyResultSet(rset);
    }
    catch (Exception exp) {
      log(".doSelect(), SQLException: " + exp.getMessage());
    }

   return rset;

  }


  /**
   *
   */
  private void applyResultSet(ResultSet rset) { 
    TimeZone timezone = TimeZone.getDefault();
    GregorianCalendar gc = null;
    java.sql.Clob textClob = null;
    InputStream in = null;
    int b = 0;
    StringBuffer stringBuffer = null;

    try { 
      key = rset.getLong("driver_address_address_id");
      addressLine1 = rset.getString("driver_address_address_line1"); 
      addressLine2 = rset.getString("driver_address_address_line2"); 
      city = rset.getString("driver_address_city"); 
      state = rset.getString("driver_address_state"); 
      zip = rset.getString("driver_address_zip"); 
      if ( rset.getTimestamp("driver_address_date_moved_in") != null) { 
        gc  = new GregorianCalendar(timezone);
        gc.setTime(new java.util.Date( rset.getTimestamp("driver_address_date_moved_in").getTime())); 
        dateMovedIn = gc;
      }
      if ( rset.getTimestamp("driver_address_created") != null) { 
        gc  = new GregorianCalendar(timezone);
        gc.setTime(new java.util.Date( rset.getTimestamp("driver_address_created").getTime())); 
        created = gc;
      }
      if ( rset.getTimestamp("driver_address_updated") != null) { 
        gc  = new GregorianCalendar(timezone);
        gc.setTime(new java.util.Date( rset.getTimestamp("driver_address_updated").getTime())); 
        updated = gc;
      }

      isDirty = false;
    }
    catch (Exception exp) {
      log("Address.applyResultSet(): SQLException:" + exp.getMessage());
    }

  }


  /**
   *
   */
  private long insertToDB(Connection conn) throws Exception { 
    long newKey = 0;
    String sqlStmt = "";
    ByteArrayInputStream bs = null;
    InputStream in = null;
    Statement stmt = null;
    ResultSet rset = null;

    sqlStmt = "select driver_address_seq.nextval from dual \n";
    stmt = conn.createStatement();
    rset = stmt.executeQuery(sqlStmt);
    rset.next();
    newKey = rset.getLong(1);
    log("newKey=" + newKey);

    sqlStmt = "insert into driver_address  " + 
    " ( " + 
    " address_id, \n" +                      
    " address_line1,     \n" +
    " address_line2,     \n" +
    " city,     \n" +
    " state,     \n" +
    " zip,     \n" +
    " date_moved_in,     \n" +
    " created,     \n" +
    " updated    \n" +
    "   ) " + 
    " values ( ?,  ?, ?, ?, ?, ?, ?, sysdate, sysdate )";
    log("Sql stmt=" + sqlStmt);
    PreparedStatement pStmt = conn.prepareStatement(sqlStmt);
    pStmt.setLong(1,newKey);
    pStmt.setString(2,addressLine1);
    pStmt.setString(3,addressLine2);
    pStmt.setString(4,city);
    pStmt.setString(5,state);
    pStmt.setString(6,zip);
    if ( dateMovedIn != null) { 
      pStmt.setTimestamp(7, new java.sql.Timestamp(dateMovedIn.getTime().getTime() ) );
    }
    else { 
      pStmt.setNull(7, java.sql.Types.DATE);
    }

    int rowsInserted = pStmt.executeUpdate();
    log("      rows inserted =" + rowsInserted);
    if ( rowsInserted != 1) { 
      log("Error:  .insertToDB failed no rows inserted");
    }
    pStmt.close();

    isDirty = false;

    return newKey;

  }


  /**
   *
   */
  private void updateOnDB(Connection conn) throws Exception { 

    ByteArrayInputStream bs = null;
    InputStream in = null;
    String sqlStmt = "update driver_address  " + 
    " set " + 
    " address_line1 = ?,     \n" +
    " address_line2 = ?,     \n" +
    " city = ?,     \n" +
    " state = ?,     \n" +
    " zip = ?,     \n" +
    " date_moved_in = ?,     \n" +
    " updated = sysdate     \n" +
    " where address_id = '" + key + "'";

    log("Sql stmt=" + sqlStmt);
    PreparedStatement pStmt = conn.prepareStatement(sqlStmt);
    pStmt.setString(1,addressLine1);
    pStmt.setString(2,addressLine2);
    pStmt.setString(3,city);
    pStmt.setString(4,state);
    pStmt.setString(5,zip);
    if ( dateMovedIn != null) { 
      pStmt.setTimestamp(6, new java.sql.Timestamp(dateMovedIn.getTime().getTime() ) );
    }
    else { 
      pStmt.setNull(6, java.sql.Types.DATE);
    }

    int rowsUpdated = pStmt.executeUpdate();
    if ( rowsUpdated != 1) { 
      log("Error:  .insertToDB failed no rows inserted");
    }
    pStmt.close();
    isDirty = false;

  }


  /**
   *
   * Delete an Address 
   * Also call delete() on any dependent objects.
   * If no Connection was passed in then we are responisible for beginning the transaction
   * Turn off auto commit, and rollback if we get exception from this or any dependent objects
   *
   */
  public void delete() throws Exception { 
    long returnKey = key;
    Connection conn = getConnection();
    try { 
      conn.setAutoCommit(false);  
      delete(conn);
      conn.commit();              
    }
    catch (Exception exp) {    //Any exception thrown by store causes a rollback. 
      log("Address.delete(), Exception: " + exp.getMessage());
      try {
        conn.rollback(); 
      } catch (SQLException rollbackExp) {             
        log(".delete(), Exception: " + rollbackExp.getMessage());
      } 
      throw exp;  //Throw exception back up so that user interface can report error
    }
    finally { 
      try {
        conn.close();
      } catch (SQLException closeExp) {             
        log("Address.delete(), Exception: " + closeExp.getMessage());
      } 
    }
  }


  /**
   *
   *
   */
  public void delete(Connection conn) throws Exception { 
    String sqlStmt = "delete from driver_address " + 
    "where address_id = ?";
    PreparedStatement pStmt = conn.prepareStatement(sqlStmt);
    pStmt.setLong(1,key);
    int rowsDeleted = pStmt.executeUpdate(); 
    log("   Deleted row from driver_address where primary key was " + key);
    if ( rowsDeleted != 1) { 
      log("Error:  Address.delete failed no rows deleted");
     }
  }


  public long getKey() { return key; } 

  public String getAddressLine1() { 
    return addressLine1;
  }


  public String getAddressLine2() { 
    return addressLine2;
  }


  public String getCity() { 
    return city;
  }


  public String getState() { 
    return state;
  }


  public String getZip() { 
    return zip;
  }


  public GregorianCalendar getDateMovedIn() { 
    return dateMovedIn;
  }


  public GregorianCalendar getCreated() { 
    return created;
  }


  public GregorianCalendar getUpdated() { 
    return updated;
  }


  public void setAddressLine1(String in) { 
    addressLine1 = in;
    isDirty = true;
  }


  public void setAddressLine2(String in) { 
    addressLine2 = in;
    isDirty = true;
  }


  public void setCity(String in) { 
    city = in;
    isDirty = true;
  }


  public void setState(String in) { 
    state = in;
    isDirty = true;
  }


  public void setZip(String in) { 
    zip = in;
    isDirty = true;
  }


  public void setDateMovedIn(GregorianCalendar in) { 
    dateMovedIn = in;
    isDirty = true;
  }


  public void setCreated(GregorianCalendar in) { 
    created = in;
    isDirty = true;
  }


  public void setUpdated(GregorianCalendar in) { 
    updated = in;
    isDirty = true;
  }



  /**
   *  Write to Log
   */
  private void log(String messageIn) { 
    System.out.println(messageIn);
  }


  /**
   *  Get JDBC Connection to the DataBase 
   *  Note: this should be returning connections from a pool.
   */
  private Connection getConnection() { 

    Connection conn = null;

    String dbServer   =  "@myserver.mycompnay.com";
    String dbPort     =  "1526";
    String dbSid      =  "mysid";
    String dbUserId   =  "username";
    String dbPassword =  "password";
    try {
      DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
      String connectString = "jdbc:oracle:thin:" + dbServer + ":" + dbPort + ":" + dbSid;
      conn = DriverManager.getConnection (connectString,  dbUserId, dbPassword);
    }
    catch (SQLException exp) {
      log("Exception: " + exp.getMessage() );
    }
    return conn;
  }


  /**
   *  A main method for testing
   */
  public static void main(String args[] ) { 
    Address object = new Address(1);
    System.out.println("addressLine1 = " + object.addressLine1 );
    System.out.println("addressLine2 = " + object.addressLine2 );
    System.out.println("city = " + object.city );
    System.out.println("state = " + object.state );
    System.out.println("zip = " + object.zip );
    System.out.println("dateMovedIn = " + object.dateMovedIn );
    System.out.println("created = " + object.created );
    System.out.println("updated = " + object.updated );

  }


}