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[Solved] Disable “Constant conditions & exceptions” inspection for field in IntelliJ IDEA


Choonster

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This is a cross-post from StackOverflow, I thought I'd ask here as well in case anyone knew the answer.

 

Forge injects specific objects into public static final fields with null values through the @CapabilityInject and @ObjectHolder annotations. Unfortunately whenever I reference one of these fields in a context that doesn't allow null values, the "Constant conditions & exceptions" inspection in IntelliJ IDEA warns me that the field may be null (because it doesn't know about the injection).

 

I know that these fields won't be null when they're accessed, so I'd like to disable the warning for them.

 

Is there a way to disable the warning for a specific field or all fields in a class? Adding @SuppressWarnings("ConstantConditions") or //noinspection ConstantConditions to the field doesn't remove the warning on the field access and adding the annotation to the field's class only removes the warning in that class.

 

I'd like to avoid adding //noinspection ConstantConditions or null-checks to every location I access the fields from.

Edited by Choonster
Fixed leftover markdown formatting.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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Thanks for the response.

 

Using a method annotated with @SuppressWarnings("ConstantConditions") worked, the @Nonnull wasn't needed on the field access. I have all my packages annotated with @MethodsReturnNonnullByDefault already, so @Nonnull wasn't needed on the method either.

 

I'm not sure what the best alternative to the current injection systems would be, though ideally it would be something that didn't require suppressing IDE warnings.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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Salamander offered an alternative solution in my thread on WTDWTF.

 

They suggested moving the initialisation to a static initialiser block instead of initialising the fields inline. This seems less hackish than a method that always returns null, but it also adds a lot of clutter if there are a lot of fields to initialise (which there are in my case).

 

For example:

public class Injection {
    @CapabilityInject
    public static final Capability<IItemHandler> CAPABILITY;
    
    static {
        CAPABILITY = null;
    }
    
    public void doStuff() {
        // No warning
        Capability<IItemHandler> capability = CAPABILITY;
    }
}

 

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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