Advising non-spring created objects

[mattmorten]

Hi All,

All of the examples I have seen online show Spring advising objects which have been created through the Spring XML. Example:

<bean id="personTarget" class="com.mycompany.PersonImpl">
    <property name="name"><value>Tony</value></property>
    <property name="age"><value>51</value></property>
</bean>

<bean id="person" 
    class="org.springframework.aop.framework.ProxyFactoryBean">
    <property name="proxyInterfaces"><value>com.mycompany.Person</value></property>

    <property name="target"><ref local="personTarget"/></property>
    <property name="interceptorNames">
        <list>
            <value>myAdvisor</value>
            <value>debugInterceptor</value>
        </list>
    </property>
</bean>

Here we are advising specifically the "personTarget" class only.

My question - can you easily advise objects which have been instantiated through Java, not Spring. Eg:

public class PersonTarget {
    public void someMethod(){...}
}

...

PersonTarget person = new PersonTarget();
person.someMethod();

... and then a Spring definition which advises this code? I may not be making myself clear, but we have a large codebase and only a tiny fraction uses Spring IoC, but we want to advise on all of it.

Thanks

[denis.zhdanov]

You can do that via AspectJ Spring integration. Check corresponding reference documentation about that - 6.8. Using AspectJ with Spring applications. This forum contains examples of load-time weaving and references to the aspectj documentation.