Hi,
class E {
public:
E(D);
setLeafData(AData);
getE();
};
class D {
public:
D(C)
..
class A {
public:
A();
setAData(AData)
getAData()
}
myE = inject->E
myE.setLeafData("blah")
myE.getE();
Here is a basic idea. It's not Java, but the concept is a fundamental
question.
On Thursday, March 28, 2013 7:52:05 AM UTC-7, Fred Faber wrote:
>
> Could you sketch a quick concrete example to show this in code real quick?
>
> On Thu, Mar 28, 2013 at 10:29 AM, caseybasichis
> <[email protected]<javascript:>
> > wrote:
>
>> Hi,
>>
>> I am struggling to understand how to give parameter information to leaf
>> nodes, from the root node in a DI setup similar to Guice.
>>
>> I have a class that takes a set of A's and generates E's. (E(D(C(B(A)))))
>>
>> E is the injected, the rest are instantiated by the DI, A is an 'A
>> provider' or 'A factory'
>>
>> E is the interface, how can I get a path, or other const data from a
>> function in E to A, to start the function chain?
>>
>> In other words I have some simple data A, that gets processed through a
>> function chain, down to an E class which generates an E_Data object which
>> is then used in the root of my application.
>>
>> Do I string functions through E,D,C,B to get A's reference? That seems
>> wrong.
>>
>> Reversing the chain make the path simple A(B(C(D(E))))), but the only way
>> to get the output seems to be to attach a singleton to E like
>> A(B(C(D(E(SQL)))))).
>>
>> That seems like inversion-of-inversion of control, but it also seems like
>> a data manager could be made at the session scope that E could take as a
>> constructor.
>>
>> What do I have flipped?
>>
>> Thanks,
>>
>> Casey
>>
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>
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