CustomerService.java

/*
 * #%L
 * Wildfly Camel :: Example :: Camel Rest Swagger
 * %%
 * Copyright (C) 2013 - 2017 RedHat
 * %%
 * Licensed 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.
 * #L%
 */
package org.wildfly.camel.examples.rest.service;

import java.util.List;

import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;
import javax.inject.Named;

import org.apache.camel.Exchange;
import org.wildfly.camel.examples.rest.data.CustomerRepository;
import org.wildfly.camel.examples.rest.model.Customer;

@ApplicationScoped
@Named
public class CustomerService {

    @Inject
    CustomerRepository customerRepository;

    public void findAll(Exchange exchange) {
        List<Customer> customers = customerRepository.findAll();
        exchange.getOut().setBody(customers);
    }

    public void findById(Exchange exchange) {
        Long id = exchange.getIn().getHeader("id", Long.class);
        Customer customer = customerRepository.findById(id);

        if (customer != null) {
            exchange.getOut().setBody(customer);
        } else {
            exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, 404);
        }
    }

    public void create(Exchange exchange) {
        Customer customer = customerRepository.save(exchange.getIn().getBody(Customer.class));
        exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, 201);

        String URL = exchange.getIn().getHeader(Exchange.HTTP_URL, String.class);
        exchange.getOut().setHeader("Location", URL + "/" + customer.getId());

        exchange.getOut().setBody(customer);
    }

    public void update(Exchange exchange) {
        Long id = exchange.getIn().getHeader("id", Long.class);
        Customer customer = customerRepository.findById(id);

        if (customer != null) {
            Customer updatedCustomer = customerRepository.save(exchange.getIn().getBody(Customer.class));

            String URL = exchange.getIn().getHeader(Exchange.HTTP_URL, String.class);
            exchange.getOut().setHeader("Location", URL + "/" + updatedCustomer.getId());
            exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, 204);
            exchange.getOut().setBody(updatedCustomer);
        } else {
            exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, 404);
        }
    }

    public void delete(Exchange exchange) {
        Long id = exchange.getIn().getHeader("id", Long.class);
        Customer customer = customerRepository.findById(id);

        if (customer != null) {
            customerRepository.delete(customer);
            exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, 204);
        } else {
            exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, 404);
        }
    }
}