CustomerServiceImpl.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package demo.jaxrs.service;

import java.util.HashMap;
import java.util.Map;

import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Response;

public class CustomerServiceImpl implements CustomerService {
    long currentId = 123;
    Map<Long, Customer> customers = new HashMap<>();
    Map<Long, Order> orders = new HashMap<>();

    public CustomerServiceImpl() {
        init();
    }

    public Customer getCustomer(String id) {
        System.out.println("----invoking getCustomer, Customer id is: " + id);
        long idNumber = Long.parseLong(id);
        Customer c = customers.get(idNumber);
        return c;
    }

    public Response updateCustomer(Long id, Customer customer) {
        System.out.println("----invoking updateCustomer, Customer name is: " + customer.getName());
        Customer c = customers.get(id);
        if (c == null || c.getId() != customer.getId()) {
            throw new WebApplicationException();
        }
        customers.put(customer.getId(), customer);
        return Response.ok(customer).build();
    }

    public Response addCustomer(Customer customer) {
        System.out.println("----invoking addCustomer, Customer name is: " + customer.getName());
        customer.setId(++currentId);

        customers.put(customer.getId(), customer);

        return Response.ok(customer).build();
    }

    public Response deleteCustomer(String id) {
        System.out.println("----invoking deleteCustomer, Customer id is: " + id);
        long idNumber = Long.parseLong(id);
        Customer c = customers.remove(idNumber);

        Response r;
        if (c != null) {
            r = Response.ok().build();
        } else {
            r = Response.notModified().build();
        }

        return r;
    }

    public Order getOrder(String orderId) {
        System.out.println("----invoking getOrder, Order id is: " + orderId);
        long idNumber = Long.parseLong(orderId);
        Order c = orders.get(idNumber);
        return c;
    }

    final void init() {
        Customer c = new Customer();
        c.setName("John");
        c.setId(123);
        customers.put(c.getId(), c);

        Order o = new Order();
        o.setDescription("order 223");
        o.setId(223);
        orders.put(o.getId(), o);
    }

}