A cleanly coded web application will have a  clear separation of concerns, with business logic in the ``++@Service++`` layer, and communication with other systems in the data access layer.


To help enforce such a separation of concerns, this rule raises an issue when a ``++@Service++`` class has ``++RestTemplate++``, ``++JmsTemplate++``, ``++WebServiceTemplate++``, ``++JdbcTemplate++``, or ``++DataSource++`` member.


== Noncompliant Code Example

[source,java]
----
@Service ("greetingmanager")
public class GreetingManagerImpl implements GreetingManager
{
    @Autowired
    DataSource ds;  // Noncompliant
----


== Compliant Solution

[source,java]
----
@Service ("greetingmanager")
public class GreetingManagerImpl implements GreetingManager
{
    @Autowired
    GreetingDao gdao;  // DataSource and its use have been moved here
----


ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
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include::message.adoc[]

include::highlighting.adoc[]

endif::env-github,rspecator-view[]