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| <p>Writing blueprint xml is quite verbose and large blueprint xmls are difficult to keep in sync with code changes and especially refactorings. |
| So you would like to do most declarations using annoations and ideally these annotations should be standardized.</p> |
| <h2 id="blueprint-maven-plugin">blueprint-maven-plugin<a class="headerlink" href="#blueprint-maven-plugin" title="Permanent link">¶</a></h2> |
| <p>The blueprint-maven-plugin allows to configure blueprint using annotations. It scans one or more paths for annotated classes and creates a blueprint.xml in target/generated-resources. So at runtime the bundle behaves like a normal blueprint bundle. |
| The generated blueprint can also be used together with a manually created blueprint file. So for example property placeholder configurations |
| or cxf services can be created in xml while most of the beans are automatically generated.</p> |
| <p>Usage:</p> |
| <div class="codehilite"><pre><span class="nt"><plugin></span> |
| <span class="nt"><groupId></span>org.apache.aries.blueprint<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>blueprint-maven-plugin<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.1.0<span class="nt"></version></span> |
| <span class="nt"><configuration></span> |
| <span class="nt"><scanPaths></span> |
| <span class="nt"><scanPath></span>org.my.package<span class="nt"></scanPath></span> |
| <span class="nt"></scanPaths></span> |
| <span class="nt"></configuration></span> |
| <span class="nt"><executions></span> |
| <span class="nt"><execution></span> |
| <span class="nt"><goals></span> |
| <span class="nt"><goal></span>blueprint-generate<span class="nt"></goal></span> |
| <span class="nt"></goals></span> |
| <span class="nt"><phase></span>process-classes<span class="nt"></phase></span> |
| <span class="nt"></execution></span> |
| <span class="nt"></executions></span> |
| <span class="nt"></plugin></span> |
| </pre></div> |
| |
| |
| <h2 id="annotations">Annotations<a class="headerlink" href="#annotations" title="Permanent link">¶</a></h2> |
| <h3 id="javaxinject-jsr-330">javax.inject (JSR 330)<a class="headerlink" href="#javaxinject-jsr-330" title="Permanent link">¶</a></h3> |
| <ul> |
| <li>@Inject Inject a bean by type and optionally further qualifiers</li> |
| <li>@Singleton Mark a class as being a bean</li> |
| <li>@Named("Myname") Names a @Singleton and qualifies an @Inject to limit it to matches with the same bean id</li> |
| </ul> |
| <h3 id="javaxannotation-jsr-250">javax.annotation (JSR 250)<a class="headerlink" href="#javaxannotation-jsr-250" title="Permanent link">¶</a></h3> |
| <ul> |
| <li>@PostConstruct Marks a method to be called after DI is finished (init-method)</li> |
| <li>@PreDestroy Marks a method to be called before the bean is destroyed (destroy-method)</li> |
| </ul> |
| <h3 id="pax-cdi">pax-cdi<a class="headerlink" href="#pax-cdi" title="Permanent link">¶</a></h3> |
| <ul> |
| <li>@OsgiServiceProvider(classes={TaskService.class}) Publishes a bean as an OSGi service with the given interfaces</li> |
| <li>@OsgiService creates a reference to an OSGi service. On optional filter is also possible</li> |
| <li>@Properties Defines service properties for OSGiServiceProvider</li> |
| <li>@Property Defines a service property</li> |
| </ul> |
| <h3 id="javaxpersistence">javax.persistence<a class="headerlink" href="#javaxpersistence" title="Permanent link">¶</a></h3> |
| <ul> |
| <li>@PersistenceContext(unitName="tasklist") inject a managed EntityManager for the given persistence unit into a field</li> |
| <li>@PersistenceUnit(unitName="tasklist") inject an unmanaged EntityManagerFactory for the given persistence unit into a field</li> |
| </ul> |
| <h3 id="javaxtransaction">javax.transaction<a class="headerlink" href="#javaxtransaction" title="Permanent link">¶</a></h3> |
| <ul> |
| <li>@Transactional mark the class as transactional. Individual methods are not yet supported</li> |
| </ul> |
| <h2 id="dependencies-for-annotations">Dependencies for annotations<a class="headerlink" href="#dependencies-for-annotations" title="Permanent link">¶</a></h2> |
| <div class="codehilite"><pre><span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>javax.inject<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>javax.inject<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1<span class="nt"></version></span> |
| <span class="nt"><optional></span>true<span class="nt"></optional></span> |
| <span class="nt"></dependency></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.ops4j.pax.cdi<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>pax-cdi-api<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>0.5.0<span class="nt"></version></span> |
| <span class="nt"><optional></span>true<span class="nt"></optional></span> |
| <span class="nt"></dependency></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.hibernate.javax.persistence<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>hibernate-jpa-2.1-api<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.0.0.Final<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>javax.transaction<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>javax.transaction-api<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.2<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| </pre></div> |
| |
| |
| <h2 id="example">Example<a class="headerlink" href="#example" title="Permanent link">¶</a></h2> |
| <p>For a complete example see <a href="https://github.com/cschneider/Karaf-Tutorial/tree/master/tasklist-blueprint-cdi">tasklist-blueprint-cdi</a> on github.</p></div> |
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