Module io.helidon.inject.api

Package io.helidon.inject.spi

Interface InjectionResolver

All Known Implementing Classes:

ConfigDrivenServiceProviderBase

public interface InjectionResolver

Implementors of this contract can assist with resolving injection points.

Method Summary

Modifier and Type	Method	Description
Optional<Object>	resolve(io.helidon.inject.api.InjectionPointInfo ipInfo, InjectionServices injectionServices, ServiceProvider<?> serviceProvider, boolean resolveIps)	Attempts to resolve the injection point info for a given service provider.

Method Details

resolve

Optional<Object> resolve(io.helidon.inject.api.InjectionPointInfo ipInfo,
 InjectionServices injectionServices,
 ServiceProvider<?> serviceProvider,
 boolean resolveIps)

Attempts to resolve the injection point info for a given service provider.

There are two modes that injection resolvers run through. Phase 1 (resolveIps=false) is during the time when the injection plan is being formulated. This is the time we need to identify which ServiceProvider instances qualify. Phase 2 (resolveIps=true) is during actual resolution, and typically comes during the service activation lifecycle.

Parameters:

ipInfo - the injection point being resolved

injectionServices - the services registry

serviceProvider - the service provider this pertains to

resolveIps - flag indicating whether injection points should be resolved

Returns:

the resolution for the plan or the injection point, or empty if unable to resolve the injection point context