001    /*
002     * hammurapi-rules-tck @mesopotamia.version@
003     * Hammurapi rules JSR-94 TCK files. 
004     * Copyright (C) 2006  Hammurapi Group
005     *
006     * This program is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 2 of the License, or (at your option) any later version.
010     *
011     * This program is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with this library; if not, write to the Free Software
018     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
019     *
020     * URL: http://http://www.hammurapi.biz
021     * e-Mail: support@hammurapi.biz
022     */
023    package biz.hammurapi.rules.jsr94.tck;
024    
025    import org.jcp.jsr94.tck.model.Customer;
026    import org.jcp.jsr94.tck.model.Invoice;
027    
028    import biz.hammurapi.rules.Rule;
029    
030    public class TckRule extends Rule {
031            
032            /**
033             * This method filters invoices so only unpaid ones are passed to <code>infer(customer, invoice)</code>
034             * @param invoice
035             * @param acceptInfo
036             */
037            public boolean accept(Invoice invoice, AcceptInfo acceptInfo) {
038                    return !"paid".equals(invoice.getStatus());
039            }
040    
041            /**
042             * If the credit limit of the customer is greater than the amount of the invoice 
043             * and the status of the invoice is unpaid then decrement
044             * the credit limit with the amount of invoice and set the status of the
045             * invoice to paid.
046             * @param customer
047             * @param invoice
048             */
049            public void infer(Customer customer, Invoice invoice) {
050                    if (customer.getCreditLimit()>invoice.getAmount()) {
051                            customer.setCreditLimit(customer.getCreditLimit()-invoice.getAmount());
052                            invoice.setStatus("paid");
053                    }
054            }
055    }