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POSpring bean injection without explicit dependency declaration?
 

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  1. POSpring bean injection without explicit dependency declaration?
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    <p>I was working for a few months on the project without even noticing this, and yesterday, after editing a class file (inserting new dependency bean with its getter/setter), I forgot to explicitly add:</p> <pre><code>&lt;property name="deviceService" ref="deviceService"/&gt; </code></pre> <p>in the appropriate spring context xml.<br> I publshed my web app to tomcat, entered debug, and the moment I saw the line of code using this service bean, I realized that I forgot to declare it as the dependecy.<br> But then, strange thing happend - the bean was injected nevertheless...<br> This behaviour confuses me a bit. I'm surely not a spring expert, I've been using it for the past several months, however this is not something that I expected to be possible. The name of the class field, as it can be seen, is the same as bean that is being injected, if that matters. In the debugger I saw something like this for the dependency field:</p> <pre><code>deviceService=$Proxy5 (id=107) * h=JdkDynamicAopProxy (id=147) </code></pre> <p>so I'm guessing it has to do something with spring AOP.</p> <p>I must add that I didn't start this project form scratch, it was already configured, it uses spring-aop for transactions demarcation, and some logging purposes. </p> <p><strong>EDIT</strong><br> Some additional info: project integrates ZK Ajax and Hibernate as well. This service bean is basically a wrapper around a DAO bean; DAO bean is in turn a wrapper around spring's HibernateTemplate. Service and DAO beans are singleton-scoped. Service that is being injected is injected into the prototype-scoped MVC controller bean. Service bean is from the package used for DB transaction demarcation:</p> <pre><code>&lt;tx:advice id="serviceTxAdvice" transaction-manager="transactionManager"&gt; &lt;tx:attributes&gt; &lt;tx:method name="*" propagation="REQUIRED" /&gt; &lt;/tx:attributes&gt; &lt;/tx:advice&gt; &lt;aop:config&gt; &lt;aop:pointcut id="serviceMethodsRMS" expression="execution(* org.irvas.amregina.backend.service.*.*(..))" /&gt; &lt;aop:advisor advice-ref="serviceTxAdvice" pointcut-ref="serviceMethodsRMS" /&gt; &lt;/aop:config&gt; </code></pre> <p>So, can anyone explain to me what is going on, or what could be the reason for this?<br> Thanks.</p>
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