Avoiding constructor confusion

[Hubert]

Hi,

let consider a situation like this: I have bean named BeanOne and two constructors:

	public BeanOne(int a, String b) {
		
	}
	
	public BeanOne(String b, int a) {
		
	}

How I should configure arguments 'a' and 'b' in XML file? I thought about making four <bean/> tags for them, but I assume that I would to use names of these beans for other arguments for constructors in other beans. I'm confused about this.

[tannoy]

take a look at following code to see if that answers your question:

<bean id="bean1" class="package.BeanOne" >
<constructor-arg type="int" value="12"/>
<constructor-arg type="java.lang.String" value="peach"/>
</bean>

<bean id="bean2" class="package.BeanOne" >
<constructor-arg type="java.lang.String" value="apple"/>
<constructor-arg type="int" value="14"/>
</bean>

bean1 and bean2 are two beans using same class (note the order of the constructor args matter). To Spring, there is no confusion here.

[Hubert]

Yeah, I thought about that, but I wondered if there is a way without defining separate beans

[tannoy]

If your business logic only needs one bean definition for the 'BeanOne' class, but you have multiple ways to construct it, consider to use setter injection.

[Hubert]

I consider an abstract situation, I was just curious about mechanism of configuring Constructor Injection in Spring in many various, sometimes nonsense scenarios. Thanks anyway