com.google.inject.internal.ConstructorInjectorStore Maven / Gradle / Ivy
package com.google.inject.internal;
import com.google.inject.spi.InjectionPoint;
/**
* Constructor injectors by type.
*/
final class ConstructorInjectorStore {
private final InjectorImpl injector;
private final FailableCache> cache =
new FailableCache<>() {
@Override
protected ConstructorInjector create(InjectionPoint constructorInjector, Errors errors)
throws ErrorsException {
return createConstructor(constructorInjector, errors);
}
};
ConstructorInjectorStore(InjectorImpl injector) {
this.injector = injector;
}
/**
* Returns a new complete constructor injector with injection listeners registered.
*/
public ConstructorInjector get(InjectionPoint constructorInjector, Errors errors)
throws ErrorsException {
return cache.get(constructorInjector, errors);
}
/**
* Purges an injection point from the cache. Use this only if the cache is not actually valid and
* needs to be purged. (See issue 319 and
* ImplicitBindingTest#testCircularJitBindingsLeaveNoResidue and
* #testInstancesRequestingProvidersForThemselvesWithChildInjectors for examples of when this is
* necessary.)
*
* Returns true if the injector for that point was stored in the cache, false otherwise.
*/
boolean remove(InjectionPoint ip) {
return cache.remove(ip);
}
private ConstructorInjector createConstructor(InjectionPoint injectionPoint, Errors errors)
throws ErrorsException {
int numErrorsBefore = errors.size();
SingleParameterInjector[] constructorParameterInjectors =
injector.getParametersInjectors(injectionPoint.getDependencies(), errors);
@SuppressWarnings("unchecked") // the injector type agrees with the injection point type
MembersInjectorImpl membersInjector = (MembersInjectorImpl)
injector.membersInjectorStore.get(injectionPoint.getDeclaringType(), errors);
ConstructionProxyFactory factory = new DefaultConstructionProxyFactory(injectionPoint);
errors.throwIfNewErrors(numErrorsBefore);
return new ConstructorInjector(membersInjector.getInjectionPoints(), factory.create(),
constructorParameterInjectors, membersInjector);
}
}