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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">javax.ws.rs.sse</a></div> |
| <h2 title="Interface SseEventSink" class="title">Interface SseEventSink</h2> |
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| <dt>All Superinterfaces:</dt> |
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| <pre>public interface <span class="typeNameLabel">SseEventSink</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang" class="externalLink">AutoCloseable</a></pre> |
| <div class="block">Outbound Server-Sent Events stream. |
| <p> |
| The instance of <a href="SseEventSink.html" title="interface in javax.ws.rs.sse"><code>SseEventSink</code></a> can be only acquired by injection of a resource method parameter: |
| <pre> |
| @GET |
| @Path("eventStream") |
| @Produces(MediaType.SERVER_SENT_EVENTS) |
| public void eventStream(@Context SseEventSink eventSink) { |
| // ... |
| } |
| </pre> |
| The injected instance is then considered as a return type, so the resource method doesn't return anything, |
| similarly as in server-side async processing. |
| <p> |
| The underlying client connection is kept open and the application code |
| is able to send events. A server-side instance implementing the interface |
| corresponds exactly to a single client HTTP connection. |
| <p> |
| The injected instance is thread safe.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>2.1</dd> |
| <dt><span class="simpleTagLabel">Author:</span></dt> |
| <dd>Marek Potociar (marek.potociar at oracle.com)</dd> |
| </dl> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <th class="colLast" scope="col">Description</th> |
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| <tr class="altColor" id="i0"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#close()">close</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Close the <a href="SseEventSink.html" title="interface in javax.ws.rs.sse"><code>SseEventSink</code></a> instance and release all associated resources.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i1"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isClosed()">isClosed</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Check if the stream has been closed already.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i2"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletionStage.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">CompletionStage</a><?></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#send(javax.ws.rs.sse.OutboundSseEvent)">send</a></span>​(<a href="OutboundSseEvent.html" title="interface in javax.ws.rs.sse">OutboundSseEvent</a> event)</code></th> |
| <td class="colLast"> |
| <div class="block">Send an outbound Server-sent event to this sink.</div> |
| </td> |
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| <h4>isClosed</h4> |
| <pre class="methodSignature">boolean isClosed()</pre> |
| <div class="block">Check if the stream has been closed already. |
| <p> |
| Please note that the client connection represented by this <code>SseServerSink</code> can be closed by the |
| client side when a client decides to close connection and disconnect from the server.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>true</code> when closed, <code>false</code> otherwise.</dd> |
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| <h4>send</h4> |
| <pre class="methodSignature"><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletionStage.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">CompletionStage</a><?> send​(<a href="OutboundSseEvent.html" title="interface in javax.ws.rs.sse">OutboundSseEvent</a> event)</pre> |
| <div class="block">Send an outbound Server-sent event to this sink. |
| <p> |
| Event will be serialized and sent to the client.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>event</code> - event to be written.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>completion stage that completes when the event has been sent. If there is a problem during sending of |
| an event, completion stage will be completed exceptionally.</dd> |
| </dl> |
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| <h4>close</h4> |
| <pre class="methodSignature">void close()</pre> |
| <div class="block">Close the <a href="SseEventSink.html" title="interface in javax.ws.rs.sse"><code>SseEventSink</code></a> instance and release all associated resources. |
| <p> |
| Subsequent calls have no effect and are ignored. Once the <a href="SseEventSink.html" title="interface in javax.ws.rs.sse"><code>SseEventSink</code></a> is closed, |
| invoking any method other than this one and <a href="#isClosed()"><code>isClosed()</code></a> would result in |
| an <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang" class="externalLink"><code>IllegalStateException</code></a> being thrown.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close()" title="class or interface in java.lang" class="externalLink">close</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang" class="externalLink">AutoCloseable</a></code></dd> |
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