Dynamic Dependency Injection Spring
I have following code inside my class
public void startListeners() throws Exception {
List<QueueConfiguration> queueConfigs = queueConfigResolver.getQueueConfigurations();
for(QueueConfiguration queueConfig : queueConfigs){
//TODO : work on this make it more testable
ICustomListener readerListener = new MyCustomListener(queueConfig);
readerListeners.add(readerListener);
readerListener.start();
}
}
I am using Spring for dependency injectio开发者_如何学Gon(not in this case but overall). Now there two problems with this code.
- I cannot put mock for each of the listeners created, while testing.
- I dont want to use ApplicationContext.getBean() because it will have same affect. AFAIK spring cannot do this dynamically , but any other pointers?
As far as I can understand, you want to create a new bean instead of ICustomListener readerListener = new MyCustomListener(queueConfig); If that is the case, creating a factory for mycustomlistener and using
public abstract TestClient createTestClient();
to create your beans, and defining
<bean id="testClient" class="com.myproject.testbeans.TestClient" scope="prototype">
</bean>
<bean id="testClientFactory" class="com.myproject.testbeans.TestClientFactory">
<lookup-method name="createTestClient" bean="testClient" />
</bean>
in your context will solve your problem. This way, every time the createTestClient method of the factory is called, a new bean is created and given to your code. However, you have to give the config object via a setter instead of the constructor.
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