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java.lang.Objectcom.google.inject.spi.ProviderLookup<T>
public final class ProviderLookup<T>
A lookup of the provider for a type. Lookups are created explicitly in a module using
getProvider() statements:
Provider<PaymentService> paymentServiceProvider
= getProvider(PaymentService.class);
| Constructor Summary | |
|---|---|
ProviderLookup(Object source,
Key<T> key)
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| Method Summary | ||
|---|---|---|
|
acceptVisitor(ElementVisitor<T> visitor)
Accepts an element visitor. |
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void |
applyTo(Binder binder)
Writes this module element to the given binder (optional operation). |
|
Provider<T> |
getDelegate()
Returns the delegate provider, or null if it has not yet been initialized. |
|
Key<T> |
getKey()
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Provider<T> |
getProvider()
Returns the looked up provider. |
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Object |
getSource()
Returns an arbitrary object containing information about the "place" where this element was configured. |
|
void |
initializeDelegate(Provider<T> delegate)
Sets the actual provider. |
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| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public ProviderLookup(Object source,
Key<T> key)
| Method Detail |
|---|
public Object getSource()
ElementTools might specially handle types they know about; StackTraceElement is a good
example. Tools should simply call toString() on the source object if the type is
unfamiliar.
getSource in interface Elementpublic Key<T> getKey()
public <T> T acceptVisitor(ElementVisitor<T> visitor)
Element
acceptVisitor in interface Elementvisitor - to call back onpublic void initializeDelegate(Provider<T> delegate)
IllegalStateException - if the delegate is already setpublic void applyTo(Binder binder)
Element
applyTo in interface Elementbinder - to apply configuration element topublic Provider<T> getDelegate()
null if it has not yet been initialized. The delegate
will be initialized when this element is processed, or otherwise used to create an injector.
public Provider<T> getProvider()
IllegalStateException if you try to use it beforehand.
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