import java.io.Serializable;
import java.util.Enumeration;
import java.util.Vector;

import javax.ejb.CreateException;
import javax.ejb.DuplicateKeyException;
import javax.ejb.EJBException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.FinderException;
import javax.ejb.NoSuchEntityException;
import javax.ejb.ObjectNotFoundException;
import javax.ejb.RemoveException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;

//
// Illustration of compound primary key generation for EJBGen.  The only changes
// from the containerManaged examples are:
//
// - the prim-key-class below specifies a non-existent Java class (which will
//   be generated by EJBGen);
// - each CMP field that is part of the compound primary key are tagged with
//   a primkey-field tag (accountType and accountID in this example).
//
// Based on those information, EJBGen will generate AccountPK.java with all
// the relevant information.
//

/**
 * @ejbgen:entity
 *   ejb-name = containerManaged
 *   table-name = ejbAccounts
 *   data-source-name = examples-dataSource-demoPool
 *   prim-key-class =  AccountPK
 *   invalidation-target = ServiceDesignEJB
 *
 * @ejbgen:jndi-name
 *   remote =  ejb20-compoundPK-AccountHome
 *   local =  ejb20-compoundPK-AccountLocalHome
 *
 * @ejbgen:finder
 *  signature = "Account findAccount(double balanceEqual)"
 *  ejb-ql = "SELECT o FROM containerManaged o WHERE balance = ?1"
 *  transaction-attribute = Mandatory
 *  isolation-level = TRANSACTION_READ_COMMITTED_FOR_UPDATE
 *
 * @ejbgen:finder
 *   signature = "Collection findBigAccounts(double balanceGreaterThan)"
 *   ejb-ql = "SELECT o FROM containerManaged o WHERE balance > ?1"
 *
 * @ejbgen:finder
 *    signature = "Collection findNullAccounts()"
 *   ejb-ql = "SELECT o FROM containerManaged o WHERE accountType IS NULL"
 *
 */



abstract public class AccountEJB implements EntityBean {

  final static boolean VERBOSE = true;

  private EntityContext ctx;

  public AccountEJB() {};

  /**
   * Sets the EntityContext for the EJBean.
   */
  public void setEntityContext(EntityContext ctx) {
    log("setEntityContext called (" + id() + ")");
    this.ctx = ctx;
  }

  /**
   * Unsets the EntityContext for the EJBean.
   * 
   */
  public void unsetEntityContext() {
    log("AccountEJB.unsetEntityContext (" + id() + ")");
    this.ctx = null;
  }

  /**
   * container managed fields
   */

  /**
   * @ejbgen:cmp-field column = id ordering-number = 1
   * @ejbgen:primkey-field
   */
  abstract public String getAccountId();
  abstract public void setAccountId(String val);

  /**
   * @ejbgen:cmp-field column = bal ordering-number = 2
   * @ejbgen:primkey-field
   */
  abstract public double getBalance();
  abstract public void setBalance(double val);

  /**
   * @ejbgen:cmp-field column = type ordering-number = 3
   * @ejbgen:primkey-field
   */
  abstract public String getAccountType();
  abstract public void setAccountType(String val);

  /**
   * Returns the Primary Key identifying this EJBean.
   */
  private String id() {
    return "" + System.identityHashCode(this) + ", PK = " + 
      (String) ((ctx == null) ? "nullctx" 
                : ((ctx.getPrimaryKey() == null ?
                    "null" : ctx.getPrimaryKey().toString())));
  }

  /**
   * This method is required by the EJB Specification,
   * but is not used by this example.
   * 
   */
  public void ejbActivate() {
    log("AccountEJB.ejbActivate (" + id() + ")");
  }

  /**
   * This method is required by the EJB Specification,
   * but is not used by this example.
   * 
   */
  public void ejbPassivate() {
    log("AccountEJB.ejbPassivate (" + id() + ")");
  }

  /**
   * This method is required by the EJB Specification,
   * but is not used by this example.
   * 
   */
  public void ejbLoad() {
    log("AccountEJB.ejbLoad (" + id() +  ")");
  }

  /**
   * Sets the EJBean's modified flag to false.
   * set to false to "reset" the variable for the next transaction.
   * 
   */
  public void ejbStore() {
    log("AccountEJB.ejbStore (" + id() + ")");
  }

  /**
   * This method is required by the EJB Specification,
   * but is not used by this example.
   */
  public void ejbRemove()
    throws RemoveException
  {
    log("AccountEJB.ejbRemove (" + id() + ")");
  }

  public AccountPK ejbCreate(String accountId, 
                             double initialBalance, 
                             String type) 
    throws CreateException
  {
    log("AccountEJB.ejbCreate( id = " + System.identityHashCode(this) + 
        ", PK = " +
        accountId + ", " + "initial balance = $ " + initialBalance + ")");

    setAccountId(accountId);
    setBalance(initialBalance);
    setAccountType(type);

    return null;  // See 9.4.2 of the EJB 1.1 specification
  }

  public void ejbPostCreate(String accountId, 
                            double initialBalance, 
                            String type) 
  {
    log("AccountEJB.ejbPostCreate (" + id() + ")");
  }


  /**
   * @ejbgen:remote-method 
   *  transaction-attribute = Required
   *
   * @ejbgen:local-method 
   *  transaction-attribute = Required
   *
   */
  public void localAndRemoteMethod() {
  }

  /**
   * @ejbgen:local-method 
   *  transaction-attribute = Required
   *
   */
  public void localMethodWithThrow() throws FooException {
}

  // Application defined methods

  /**
   * @ejbgen:remote-method 
   *  transaction-attribute = Required
   *
   */
  public double deposit(double amount)
  {
    log("AccountEJB.deposit: Depositing $" + 
        amount + 
        " into '" + 
        getAccountId() + "'");

    setBalance(getBalance() + amount);
    return getBalance();
  }

  /**
   * @ejbgen:remote-method transaction-attribute = Mandatory
   */
  public double withdraw(double amount)
    throws ProcessingErrorException
  {
    log("AccountEJB.withdraw: Withdrawing $" + amount + " from '" + 
        getAccountId() + "'");
    if (amount > getBalance()) {
      throw new ProcessingErrorException(
                                         "Request to withdraw $" + amount +
                                         "; is more than balance $" + getBalance() +
                                         " in account " + getAccountId());
    }
    setBalance(getBalance() - amount);
    return getBalance();
  }

  /**
   * @ejbgen:remote-method
   */
  public double balance() {
    log("AccountEJB.balance (" + id() + ")");

    return getBalance();
  }

  /**
   * Returns the account type.
   *
   * @ejbgen:remote-method
   */
  public String accountType() {
    log("AccountEJB.accountType (" + id() + ")");

    return getAccountType();
  }

  // You might also consider using WebLogic's log service
  private void log(String s) {
    if (VERBOSE) System.out.println(s);
  } 

}
/* This file was automatically generated */