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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">jakarta.ws.rs</a></div> |
| <h2 title="Annotation Type ConstrainedTo" class="title">Annotation Type ConstrainedTo</h2> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/Target.html?is-external=true" title="class or interface in java.lang.annotation" class="externalLink">@Target</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/ElementType.html?is-external=true#TYPE" title="class or interface in java.lang.annotation" class="externalLink">TYPE</a>) |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/Retention.html?is-external=true" title="class or interface in java.lang.annotation" class="externalLink">@Retention</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/RetentionPolicy.html?is-external=true#RUNTIME" title="class or interface in java.lang.annotation" class="externalLink">RUNTIME</a>) |
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| public @interface <span class="memberNameLabel">ConstrainedTo</span></pre> |
| <div class="block">Indicates the run-time context in which an annotated JAX-RS provider is applicable. If a <code>@ConstrainedTo</code> |
| annotation is not present on a JAX-RS provider type declaration, the declared provider may be used in any run-time |
| context. If such a annotation is present, the JAX-RS runtime will enforce the specified usage restriction. |
| <p> |
| The following example illustrates restricting a <a href="ext/MessageBodyReader.html" title="interface in jakarta.ws.rs.ext"><code>MessageBodyReader</code></a> provider implementation to |
| run only as part of a <a href="RuntimeType.html#CLIENT"><code>JAX-RS client run-time</code></a>: |
| </p> |
| |
| <pre> |
| @ConstrainedTo(RuntimeType.CLIENT) |
| public class MyReader implements MessageBodyReader { |
| ... |
| } |
| </pre> |
| <p> |
| The following example illustrates restricting a <a href="ext/WriterInterceptor.html" title="interface in jakarta.ws.rs.ext"><code>WriterInterceptor</code></a> provider implementation to |
| run only as part of a <a href="RuntimeType.html#SERVER"><code>JAX-RS server run-time</code></a>: |
| </p> |
| |
| <pre> |
| @ConstrainedTo(RuntimeType.SERVER) |
| public class MyWriterInterceptor implements WriterInterceptor { |
| ... |
| } |
| </pre> |
| <p> |
| It is a configuration error to constraint a JAX-RS provider implementation to a run-time context in which the |
| provider cannot be applied. In such case a JAX-RS runtime SHOULD inform a user about the issue and ignore the |
| provider implementation in further processing. |
| </p> |
| <p> |
| For example, the following restriction of a <a href="client/ClientRequestFilter.html" title="interface in jakarta.ws.rs.client"><code>ClientRequestFilter</code></a> to run only as part of a |
| JAX-RS server run-time would be considered invalid: |
| </p> |
| |
| <pre> |
| // reported as invalid and ignored by JAX-RS runtime |
| @ConstrainedTo(RuntimeType.SERVER) |
| public class MyFilter implements ClientRequestFilter { |
| ... |
| } |
| </pre></div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>2.0</dd> |
| <dt><span class="simpleTagLabel">Author:</span></dt> |
| <dd>Marek Potociar</dd> |
| </dl> |
| </li> |
| </ul> |
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| <!-- =========== ANNOTATION TYPE REQUIRED MEMBER SUMMARY =========== --> |
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| <h3>Required Element Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Required Elements</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Required Element</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="RuntimeType.html" title="enum in jakarta.ws.rs">RuntimeType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#value()">value</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Define the <a href="RuntimeType.html" title="enum in jakarta.ws.rs"><code>constraint type</code></a> to be placed on a JAX-RS provider.</div> |
| </td> |
| </tr> |
| </table> |
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| <h4>value</h4> |
| <pre><a href="RuntimeType.html" title="enum in jakarta.ws.rs">RuntimeType</a> value</pre> |
| <div class="block">Define the <a href="RuntimeType.html" title="enum in jakarta.ws.rs"><code>constraint type</code></a> to be placed on a JAX-RS provider.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>applicable run-time context.</dd> |
| </dl> |
| </li> |
| </ul> |
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