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| <h2 title="Interface SseEventSink" class="title">Interface SseEventSink</h2> |
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| <dt>All Superinterfaces:</dt> |
| <dd>java.lang.AutoCloseable</dd> |
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| <br> |
| <pre>public interface <span class="typeNameLabel">SseEventSink</span> |
| extends java.lang.AutoCloseable</pre> |
| <div class="block">Outbound Server-Sent Events stream. |
| <p> |
| The instance of <a href="../../../../javax/ws/rs/sse/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> |
| </dl> |
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| <h3>Method Summary</h3> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../javax/ws/rs/sse/SseEventSink.html#close--">close</a></span>()</code> |
| <div class="block">Close the <a href="../../../../javax/ws/rs/sse/SseEventSink.html" title="interface in javax.ws.rs.sse"><code>SseEventSink</code></a> instance and release all associated resources.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../javax/ws/rs/sse/SseEventSink.html#isClosed--">isClosed</a></span>()</code> |
| <div class="block">Check if the stream has been closed already.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>java.util.concurrent.CompletionStage<?></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../javax/ws/rs/sse/SseEventSink.html#send-javax.ws.rs.sse.OutboundSseEvent-">send</a></span>(<a href="../../../../javax/ws/rs/sse/OutboundSseEvent.html" title="interface in javax.ws.rs.sse">OutboundSseEvent</a> event)</code> |
| <div class="block">Send an outbound Server-sent event to this sink.</div> |
| </td> |
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| <h4>isClosed</h4> |
| <pre>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> |
| </dl> |
| </li> |
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| <a name="send-javax.ws.rs.sse.OutboundSseEvent-"> |
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| <h4>send</h4> |
| <pre>java.util.concurrent.CompletionStage<?> send(<a href="../../../../javax/ws/rs/sse/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> |
| </li> |
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| <h4>close</h4> |
| <pre>void close()</pre> |
| <div class="block">Close the <a href="../../../../javax/ws/rs/sse/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="../../../../javax/ws/rs/sse/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="../../../../javax/ws/rs/sse/SseEventSink.html#isClosed--"><code>isClosed()</code></a> would result in |
| an <code>IllegalStateException</code> being thrown.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>close</code> in interface <code>java.lang.AutoCloseable</code></dd> |
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