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Provider (Guice 2.0)
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com.google.inject</FONT>
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Interface Provider<T></H2>
<DL>
<DT><DT><B>Type Parameters:</B><DD><CODE>T</CODE> - the type of object this provides</DL>
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<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../com/google/inject/spi/ProviderWithDependencies.html" title="interface in com.google.inject.spi">ProviderWithDependencies</A><T></DD>
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<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../com/google/inject/assistedinject/FactoryProvider.html" title="class in com.google.inject.assistedinject">FactoryProvider</A></DD>
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<DT><PRE>public interface <B>Provider<T></B></DL>
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<P>
An object capable of providing instances of type <code>T</code>. Providers are used in numerous ways
by Guice:
<ul>
<li>When the default means for obtaining instances (an injectable or parameterless constructor)
is insufficient for a particular binding, the module can specify a custom <code>Provider</code>
instead, to control exactly how Guice creates or obtains instances for the binding.
<li>An implementation class may always choose to have a <code>Provider<T></code> instance injected,
rather than having a <code>T</code> injected directly. This may give you access to multiple
instances, instances you wish to safely mutate and discard, instances which are out of scope
(e.g. using a <code>@RequestScoped</code> object from within a <code>@SessionScoped</code> object), or
instances that will be initialized lazily.
<li>A custom <A HREF="../../../com/google/inject/Scope.html" title="interface in com.google.inject"><CODE>Scope</CODE></A> is implemented as a decorator of <code>Provider<T></code>, which decides
when to delegate to the backing provider and when to provide the instance some other way.
<li>The <A HREF="../../../com/google/inject/Injector.html" title="interface in com.google.inject"><CODE>Injector</CODE></A> offers access to the <code>Provider<T></code> it uses to fulfill requests
for a given key, via the <A HREF="../../../com/google/inject/Injector.html#getProvider(com.google.inject.Key)"><CODE>Injector.getProvider(com.google.inject.Key<T>)</CODE></A> methods.
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<CODE> <A HREF="../../../com/google/inject/Provider.html" title="type parameter in Provider">T</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/google/inject/Provider.html#get()">get</A></B>()</CODE>
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Provides an instance of <code>T</code>.</TD>
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<A NAME="get()"><!-- --></A><H3>
get</H3>
<PRE>
<A HREF="../../../com/google/inject/Provider.html" title="type parameter in Provider">T</A> <B>get</B>()</PRE>
<DL>
<DD>Provides an instance of <code>T</code>. Must never return <code>null</code>.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/google/inject/OutOfScopeException.html" title="class in com.google.inject">OutOfScopeException</A></CODE> - when an attempt is made to access a scoped object while the scope
in question is not currently active
<DD><CODE><A HREF="../../../com/google/inject/ProvisionException.html" title="class in com.google.inject">ProvisionException</A></CODE> - if an instance cannot be provided. Such exceptions include messages
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