customer.java

Mandarax是一个规则引擎的纯Java实现。它支持多类型的事实和基于反映的规则

/*
 * Copyright (C) 1999-2004 <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</a>
 *
 * This library 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 of the License, or (at your option) any later version.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package org.mandarax.examples.crm.domainmodel;


/**
 * Represents customers. Note that there are some method to get the turnover.
 * These methods are used as functions to build the knowledge base.
 * (rules like: if the turnover of a customer in the last 6 month was more than
 * 500$ then ..".
 * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
 * @version 3.4 <7 March 05>
 * @since 1.2
 */
public class Customer extends BusinessObject {

    private int    id           = 0;
    private String firstName    = "?";
    private String name         = "?";
    public static Customer ROBERT_MUSIL = new Customer (1, "Robert", "Musil");
    public static Customer KURT_VONNEGUT = new Customer (2, "Kurt", "Vonnegut");
    public static Customer GRAHAM_GREENE = new Customer (3, "Graham", "Greene");
    public static Customer THOMAS_MANN = new Customer (4, "Thomas", "Mann");
    public static Customer UMBERTO_ECO = new Customer (5, "Umberto", "Eco");
    public static Customer LUDWIG_WITTGENSTEIN = new Customer (6, "Ludwig", "Wittgenstein");
    public static Customer[] ALL = {ROBERT_MUSIL,KURT_VONNEGUT,GRAHAM_GREENE,THOMAS_MANN,UMBERTO_ECO,LUDWIG_WITTGENSTEIN};


    /**
     * Constructor.
     */
    public Customer() {
        super ();
    }
    /**
     * Constructor.
     * @param anId int
     * @param aFirstName java.lang.String
     * @param aName java.lang.String
     */
    public Customer(int anId, String aFirstName, String aName) {
        super ();

        id        = anId;
        firstName = aFirstName;
        name      = aName;
    }

    /**
     * Get the first name.
     * @return java.lang.String
     */
    public String getFirstName() {
        return firstName;
    }

    /**
     * Get the id.
     * @return int
     */
    public int getId() {
        return id;
    }
    /**
     * Set the id.
     * @param id the id
     */
    public void setId(int id) {
        this.id = id;
    }

    /**
     * Get the name.
     * @return java.lang.String
     */
    public String getName() {
        return name;
    }

    /**
     * Get the turnover during the last months.
     * @return double
     * @param month int
     */
    public double getTurnover(int month) {
        // WARNING: pure dummy data - would probably be fetched from a DB in a real project (using a GROUP BY query)
    	// this method is used as JFunction, see Oryx for another flavor of this example that uses SQLFunctions wrapping
    	// SQL queries on a CUSTOMER_TRANSACTION table    	
    	if (month>10) {
    		if (id==1) return 80; 
    		else if (id==2) return 100; 
    		else if (id==3) return 150; 
    		else if (id==4) return 220; 
    		else if (id==5) return 300; 
    		else if (id==6) return 420; 
    	}
    	return 1000;
    }

    /**
     * Get the turnover in the last numberOfMonth
     * using the kind of payment.
     * @return double
     * @param month int
     * @param kop KindOfPayment
     */
    public double getTurnover(int month, KindOfPayment kop) {
        // WARNING: pure dummy data - would probably be fetched from a DB in a real project (using a GROUP BY query)
    	// this method is used as JFunction, see Oryx for another flavor of this example that uses SQLFunctions wrapping
    	// SQL queries on a CUSTOMER_TRANSACTION table    	
    	if (month>10) {
    		if (id==1) return 50; 
    		else if (id==2) return 50; 
    		else if (id==3) return 100; 
    		else if (id==4) return 220; 
    		else if (id==5) return 200; 
    		else if (id==6) return 300;
    	}
    	return 1000;
    }

    /**
     * Set the first name.
     * @param aFirstName java.lang.String
     */
    public void setFirstName(String aFirstName) {
        firstName = aFirstName;
    }

    /**
     * Set the name.
     * @param aName java.lang.String
     */
    public void setName(String aName) {
        name = aName;
    }

    /**
     * COnvert the object to a string.
     * @return java.lang.String
     */
    public String toString() {
        return firstName + " " + name;
    }
	/**
	 * Compares objects.
	 * @return boolean
	 * @param obj java.lang.Object
	 */
	public boolean equals(Object obj) {
	    return obj!=null && (obj instanceof Customer) && ((Customer) obj).id == id;
	}
	/**
	 * Get the hash code of the object.
	 * @return int
	 */
	public int hashCode() {
	    return id;
	}
}