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| <h2 title="Interface FluentProperty" class="title">Interface FluentProperty</h2> |
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| <dl> |
| <dt>All Superinterfaces:</dt> |
| <dd>java.io.Serializable, <a href="../../../../../org/apache/felix/dm/lambda/callbacks/SerializableLambda.html" title="interface in org.apache.felix.dm.lambda.callbacks">SerializableLambda</a></dd> |
| </dl> |
| <dl> |
| <dt>Functional Interface:</dt> |
| <dd>This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.</dd> |
| </dl> |
| <hr> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">this interface is only supported with java8 and will be removed in next dm release</span></div> |
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| <br> |
| <pre>@FunctionalInterface |
| public interface <span class="typeNameLabel">FluentProperty</span> |
| extends <a href="../../../../../org/apache/felix/dm/lambda/callbacks/SerializableLambda.html" title="interface in org.apache.felix.dm.lambda.callbacks">SerializableLambda</a></pre> |
| <div class="block">Lambda allowing to define fluent service properties. Property names are deduces from the lambda parameter name. |
| |
| <p> Example of a component which provides fluent properties {"foo"="bar"; "foo2"=Integer(123)}: |
| |
| <pre><code> |
| public class Activator extends DependencyManagerActivator { |
| public void init(BundleContext ctx, DependencyManager dm) throws Exception { |
| component(comp -> comp.impl(MyComponentImpl.class).provides(MyService.class, foo->"bar", foo2 -> 123)); |
| } |
| } |
| </code></pre> |
| |
| When a property name contains dots ("."), then since it's not possible to declare a lambda parameter with some dots, you can |
| encode the dots using some underscores. A single underscore is then converted to a dot, unless is it followed by another |
| underscore in which case the two consecutive underscores ("__") are converted to a single underscore. |
| |
| For example, assume your component provides a service using the two service.ranking and foo_bar service properties. In this case |
| you would declare the service properties like this:<p> |
| |
| <pre><code> |
| public class Activator extends DependencyManagerActivator { |
| public void init(BundleContext ctx, DependencyManager dm) throws Exception { |
| component(comp -> comp.impl(MyComponentImpl.class).provides(MyService.class, service_ranking->10, foo__bar -> "gabuzo")); |
| } |
| } |
| </code></pre> |
| |
| <b>Caution: Fluent properties requires the usage of the "-parameter" javac option.</b> |
| |
| Under eclipse, you can enable this option using: |
| |
| <pre><code> |
| Windows -> Preference -> Compiler -> Classfile Generation -> Store information about method parameters. |
| </code></pre> |
| |
| <br>WARNING: this is interface is deprecated, it is only supported when using java8, not on java9+, and we will remove it in next DM release</div> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/lambda/FluentProperty.html#apply-java.lang.String-">apply</a></span>(java.lang.String name)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| <div class="block">Represents a fluent property</div> |
| </td> |
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| <h4>apply</h4> |
| <pre>java.lang.Object apply(java.lang.String name)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| <div class="block">Represents a fluent property</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - the property name. The parameter used by the lambda will be intropsected and will be used as the actual property name.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the property value</dd> |
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