Inject new objects in for loop with CDI (Weld)
Clash Royale CLAN TAG#URR8PPPInject new objects in for loop with CDI (Weld)
I want to introduce CDI to existing project. Currently we are creating new objects inside for loop like
Context context;
for(String string : strings) {
context = new Context();
// do some operations with string.
// set outcomes of above operation in context.
}
Now if I am injecting Context as
Context
@Inject Context context;
I'm getting same instance every time.
I'm wondering if there is any way available in CDI to create new Context inside loop?
Context
Hi Adrian, do you think it would be a design approach. Although its a use case requirement, but before opting for it, I would definitely like to see if its a kind of anti pattern? Thanks, Raman
– Raman
Oct 4 '14 at 19:34
1 Answer
1
As long as you do not use special scopes, you can use
@Inject
Instance<B> bProvider;
...
B b = bProvider.get();
and you will get a new "B" everytime. Check out this gist.
To clarify,
B must be annotated as @Dependent or not annotated at all in EE 6/7 (in 7 with bean discovery all)– John Ament
Oct 4 '14 at 13:37
B
@Dependent
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Why would you need that? You are trying to abuse the dependency injection mechanism.
– Adrian Mitev
Oct 3 '14 at 19:35