BankAccountECL.java :  » J2EE » JOnAS-4.8.6 » org » objectweb » clusterDemo » Java Open Source

// BankAccountECL.java

package org.objectweb.clusterDemo;

import javax.ejb.CreateException;
import javax.ejb.DuplicateKeyException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.RemoveException;

import org.objectweb.jonas.common.Log;
import org.objectweb.util.monolog.api.Logger;
import org.objectweb.util.monolog.api.BasicLevel;

/**
 *
 */
public abstract class BankAccountECL implements EntityBean {

    static private Logger logger = null;

    EntityContext ejbContext;

    // ------------------------------------------------------------------
    // EntityBean implementation
    // ------------------------------------------------------------------

    /**
     * Set the associated entity context. The container invokes this method on
     * an instance after the instance has been created. This method is called in
     * an unspecified transaction context.
     * @param ctx - An EntityContext interface for the instance. The instance
     *        should store the reference to the context in an instance variable.
     * @throws EJBException Thrown by the method to indicate a failure caused by
     *         a system-level error.
     */
    public void setEntityContext(EntityContext ctx) {
        if (logger == null) {
            logger = Log.getLogger("org.objectweb.jonas_tests");
        }
        logger.log(BasicLevel.DEBUG, "");
        ejbContext = ctx;
    }

    /**
     * Unset the associated entity context. The container calls this method
     * before removing the instance. This is the last method that the container
     * invokes on the instance. The Java garbage collector will eventually
     * invoke the finalize() method on the instance. This method is called in an
     * unspecified transaction context.
     * @throws EJBException Thrown by the method to indicate a failure caused by
     *         a system-level error.
     */
    public void unsetEntityContext() {
        logger.log(BasicLevel.DEBUG, "");
        ejbContext = null;
    }

    /**
     * A container invokes this method before it removes the EJB object that is
     * currently associated with the instance. This method is invoked when a
     * client invokes a remove operation on the enterprise Bean's home interface
     * or the EJB object's remote interface. This method transitions the
     * instance from the ready state to the pool of available instances. This
     * method is called in the transaction context of the remove operation.
     * @throws RemoveException The enterprise Bean does not allow destruction of
     *         the object.
     * @throws EJBException - Thrown by the method to indicate a failure caused
     *         by a system-level error.
     */
    public void ejbRemove() throws RemoveException {
        logger.log(BasicLevel.DEBUG, "");
    }

    /**
     * A container invokes this method to instruct the instance to synchronize
     * its state by loading it state from the underlying database. This method
     * always executes in the proper transaction context.
     * @throws EJBException Thrown by the method to indicate a failure caused by
     *         a system-level error.
     */
    public void ejbLoad() {
        logger.log(BasicLevel.DEBUG, "");
    }

    /**
     * A container invokes this method to instruct the instance to synchronize
     * its state by storing it to the underlying database. This method always
     * executes in the proper transaction context.
     * @throws EJBException Thrown by the method to indicate a failure caused by
     *         a system-level error.
     */
    public void ejbStore() {
        logger.log(BasicLevel.DEBUG, "");
    }

    /**
     * There must be an ejbPostCreate par ejbCreate method
     * @throws CreateException Failure to create an entity EJB object.
     */
    public void ejbPostCreate(int b, String n) throws CreateException {
        logger.log(BasicLevel.DEBUG, "");
    }

    /**
     * The Entity bean can define 0 or more ejbCreate methods.
     * @throws CreateException Failure to create an entity EJB object.
     * @throws DuplicateKeyException An object with the same key already exists.
     */
    public java.lang.String ejbCreate(int b, String n) throws CreateException, DuplicateKeyException {
        logger.log(BasicLevel.DEBUG, "");

        // Init here the bean fields
        setBalance(b);
        setName(n);

        // In CMP, should return null.
        return null;
    }

    /**
     * A container invokes this method on an instance before the instance
     * becomes disassociated with a specific EJB object.
     */
    public void ejbPassivate() {
        logger.log(BasicLevel.DEBUG, "");
    }

    /**
     * A container invokes this method when the instance is taken out of the
     * pool of available instances to become associated with a specific EJB
     * object.
     */
    public void ejbActivate() {
        logger.log(BasicLevel.DEBUG, "");
    }

    // ------------------------------------------------------------------
    // BankAccount implementation
    // ------------------------------------------------------------------

    /**
     * credit method
     */
    public void putMoney(int value) {
        logger.log(BasicLevel.DEBUG, "");
        setBalance(getBalance() + value);
    }

    /**
     * credit method
     */
    public void getMoney(int value) {
        logger.log(BasicLevel.DEBUG, "");
        setBalance(getBalance() - value);
    }

    public abstract String getName();

    public abstract void setName(String name);

    public abstract double getBalance();

    public abstract void setBalance(double balance);

}