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<div class="subTitle">com.tavianator.sangria.contextual</div>
<h2 title="Interface ContextSensitiveProvider" class="title">Interface ContextSensitiveProvider<T></h2>
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<pre>public interface <span class="typeNameLabel">ContextSensitiveProvider<T></span></pre>
<div class="block">Like a <a href="https://google.github.io/guice/api-docs/latest/javadoc/com/google/inject/Provider.html?is-external=true" title="class or interface in com.google.inject"><code>Provider</code></a>, but with knowledge of the target <a href="https://google.github.io/guice/api-docs/latest/javadoc/com/google/inject/spi/InjectionPoint.html?is-external=true" title="class or interface in com.google.inject.spi"><code>InjectionPoint</code></a>.
<p>
This interface, along with <a href="../../../../com/tavianator/sangria/contextual/ContextSensitiveBinder.html" title="class in com.tavianator.sangria.contextual"><code>ContextSensitiveBinder</code></a>, is useful for injecting custom logger types, among other
things. However, context-sensitive injections can make maintenance and debugging more difficult.
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.0</dd>
<dt><span class="simpleTagLabel">Version:</span></dt>
<dd>1.0</dd>
<dt><span class="simpleTagLabel">Author:</span></dt>
<dd>Tavian Barnes (tavianator@tavianator.com)</dd>
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<td class="colFirst"><code><a href="../../../../com/tavianator/sangria/contextual/ContextSensitiveProvider.html" title="type parameter in ContextSensitiveProvider">T</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/tavianator/sangria/contextual/ContextSensitiveProvider.html#getInContext-com.google.inject.spi.InjectionPoint-">getInContext</a></span>(<a href="https://google.github.io/guice/api-docs/latest/javadoc/com/google/inject/spi/InjectionPoint.html?is-external=true" title="class or interface in com.google.inject.spi">InjectionPoint</a> injectionPoint)</code>
<div class="block">Provide an instance of <code>T</code> for the given context.</div>
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<td class="colFirst"><code><a href="../../../../com/tavianator/sangria/contextual/ContextSensitiveProvider.html" title="type parameter in ContextSensitiveProvider">T</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/tavianator/sangria/contextual/ContextSensitiveProvider.html#getInUnknownContext--">getInUnknownContext</a></span>()</code>
<div class="block">Provide an instance of <code>T</code> for an unknown context.</div>
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<h4>getInContext</h4>
<pre><a href="../../../../com/tavianator/sangria/contextual/ContextSensitiveProvider.html" title="type parameter in ContextSensitiveProvider">T</a> getInContext(<a href="https://google.github.io/guice/api-docs/latest/javadoc/com/google/inject/spi/InjectionPoint.html?is-external=true" title="class or interface in com.google.inject.spi">InjectionPoint</a> injectionPoint)</pre>
<div class="block">Provide an instance of <code>T</code> for the given context.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>injectionPoint</code> - The <a href="https://google.github.io/guice/api-docs/latest/javadoc/com/google/inject/spi/InjectionPoint.html?is-external=true" title="class or interface in com.google.inject.spi"><code>InjectionPoint</code></a> for this provision.</dd>
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<h4>getInUnknownContext</h4>
<pre><a href="../../../../com/tavianator/sangria/contextual/ContextSensitiveProvider.html" title="type parameter in ContextSensitiveProvider">T</a> getInUnknownContext()</pre>
<div class="block">Provide an instance of <code>T</code> for an unknown context.
<p>
The <a href="https://google.github.io/guice/api-docs/latest/javadoc/com/google/inject/spi/InjectionPoint.html?is-external=true" title="class or interface in com.google.inject.spi"><code>InjectionPoint</code></a> may not be known in all cases, for example if a <code>Provider<T></code> is used instead
of
a bare <code>T</code>. This method will be called in those cases.
</p>
<p>
One reasonable implementation is to return a generically applicable instance, such as an anonymous logger.
Another valid implementation is to throw an unchecked exception; in that case, <code>Provider<T></code> injections
will fail.
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>An instance of <code>T</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang">RuntimeException</a></code> - If injection without a context is not supported.</dd>
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