Ich bin neu in OSGi und baue eine erste DS-Implementierung.JAVA OSGi: InstantiationException mit deklarativen Diensten
Alles ist codiert nach „dem Buch“ aber beim Laufen bekomme ich diesen Fehler:
java.lang.InstantiationException: com.mine.logger.internal.udp.UdpListener
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.eclipse.equinox.internal.ds.model.ServiceComponent.createInstance(ServiceComponent.java:457)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.createInstance(ServiceComponentProp.java:264)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:325)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:588)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:196)
at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:328)
at org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:221)
at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:104)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:933)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:227)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:149)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:756)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:711)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:206)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:507)
at org.eclipse.equinox.internal.ds.InstanceProcess.registerService(InstanceProcess.java:504)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:212)
at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied(Resolver.java:441)
at org.eclipse.equinox.internal.ds.Resolver.enableComponents(Resolver.java:213)
at org.eclipse.equinox.internal.ds.SCRManager.performWork(SCRManager.java:800)
at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch(SCRManager.java:767)
at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
at org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor.run(Executor.java:70)
Dies ist die configuration.xml des Moduls I in andere verwenden mag:
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" activate="startup" deactivate="shutdown" immediate="true" name="com.mine.logger.storeindb">
<implementation class="com.mine.logger.internal.storeindb.StoreLog"/>
<service>
<provide interface="com.mine.logger.storeindb.IStoreLog"/>
</service>
</scr:component>
Und das ist das configuration.xml des Moduls, die es benutzen werden:
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="com.mine.logger.udp">
<implementation class="com.mine.logger.internal.udp.UdpListener"/>
<reference bind="setStoreLog" interface="com.mine.logger.storeindb.IStoreLog" name="storelog" unbind="unsetStoreLog"/>
</scr:component>
-Code für bind und lösen:
private IStoreLog storeLog;
public void setStoreLog(IStoreLog value)
{
System.err.println("UdpListener > setStoreLog");
this.storeLog = value;
}
public void unsetStoreLog(IStoreLog value)
{
System.err.println("UdpListener > unsetStoreLog");
if (this.storeLog == value) {
this.storeLog = null;
}
}
Irgendwelche Ideen? Danke, Frank
nein, das gleiche Ergebnis, der Name scheint nur als ein Etikett und nicht als Code verwendet werden. Gleiches Ergebnis mit: scr: component> –
Frank