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| <h2 title="Interface BackpressureStrategy" class="title">Interface BackpressureStrategy</h2> |
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| <pre>public interface <span class="typeNameLabel">BackpressureStrategy</span></pre> |
| <div class="block">Helper interface to dynamically handle backpressure when implementing FlightProducers. |
| This must only be used in FlightProducer implementations that are non-blocking.</div> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flight/BackpressureStrategy.CallbackBackpressureStrategy.html" title="class in org.apache.arrow.flight">BackpressureStrategy.CallbackBackpressureStrategy</a></span></code> |
| <div class="block">A back pressure strategy that uses callbacks to notify when the client is ready or cancelled.</div> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flight/BackpressureStrategy.html#register-org.apache.arrow.flight.FlightProducer.ServerStreamListener-">register</a></span>(<a href="../../../../org/apache/arrow/flight/FlightProducer.ServerStreamListener.html" title="interface in org.apache.arrow.flight">FlightProducer.ServerStreamListener</a> listener)</code> |
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| <td class="colFirst"><code><a href="../../../../org/apache/arrow/flight/BackpressureStrategy.WaitResult.html" title="enum in org.apache.arrow.flight">BackpressureStrategy.WaitResult</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flight/BackpressureStrategy.html#waitForListener-long-">waitForListener</a></span>(long timeout)</code> |
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| <h4>register</h4> |
| <pre>void register(<a href="../../../../org/apache/arrow/flight/FlightProducer.ServerStreamListener.html" title="interface in org.apache.arrow.flight">FlightProducer.ServerStreamListener</a> listener)</pre> |
| <div class="block">Set up operations to work against the given listener. |
| |
| This must be called exactly once and before any calls to <a href="../../../../org/apache/arrow/flight/BackpressureStrategy.html#waitForListener-long-"><code>waitForListener(long)</code></a> and |
| <a href="../../../../org/apache/arrow/flight/OutboundStreamListener.html#start-org.apache.arrow.vector.VectorSchemaRoot-"><code>OutboundStreamListener.start(VectorSchemaRoot)</code></a></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>listener</code> - The listener this strategy applies to.</dd> |
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| <h4>waitForListener</h4> |
| <pre><a href="../../../../org/apache/arrow/flight/BackpressureStrategy.WaitResult.html" title="enum in org.apache.arrow.flight">BackpressureStrategy.WaitResult</a> waitForListener(long timeout)</pre> |
| <div class="block">Waits for the listener to be ready or cancelled up to the given timeout.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>timeout</code> - The timeout in milliseconds. Infinite if timeout is <= 0.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The result of the wait.</dd> |
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