oracle.dbtools.plugin.api.di

Interface InstanceProvider<T>

Type Parameters:

T - The type of the service that was located

All Superinterfaces:

Iterable<T>, javax.inject.Provider<T>

public interface InstanceProvider<T>
extends Iterable<T>, javax.inject.Provider<T>

Provider specialization that provides the ability to:

• determine if a provider implementation was found, via isUnsatisfied()
• determine if there are multiple implementations found, via isAmbiguous()
• Iterate over the available implementations, via iterator()

Author:

cdivilly

See Also:

InstanceLocator

Method Summary

Modifier and Type	Method and Description
boolean	isAmbiguous() Determines if there is more than one available implementation for the required type and qualifiers
boolean	isUnsatisfied() Determines if there is no available implementation for the required type and qualifiers.
Iterator<T>	iterator() When a service has multiple providers (which can be determined by calling isAmbiguous()) this iterator enumerates each of the available providers

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface javax.inject.Provider

get

Method Detail

isAmbiguous

boolean isAmbiguous()

Determines if there is more than one available implementation for the required type and qualifiers

Returns:

true if there are multiple providers, false otherwise

isUnsatisfied

boolean isUnsatisfied()

Determines if there is no available implementation for the required type and qualifiers. If this method returns true, then calling Provider.get() will raise a RuntimeException

Returns:

true if there is no provider, false otherwise

iterator

Iterator<T> iterator()

When a service has multiple providers (which can be determined by calling isAmbiguous()) this iterator enumerates each of the available providers

Specified by:

iterator in interface Iterable<T>

Returns:

The set of available providers