Examples with ComponentFactory org.apache.felix.dm.runtime.api.ComponentFactory used on opensource projects

Example 1 with ComponentFactory

use of org.apache.felix.dm.runtime.api.ComponentFactory in project felix by apache.

the class ComponentBuilder method build.

@Override
public void build(MetaData srvMeta, List<MetaData> depsMeta, Bundle b, DependencyManager dm) throws Exception {
    Component c = dm.createComponent();
    String factory = srvMeta.getString(Params.factorySet, null);
    String factoryName = srvMeta.getString(Params.factoryName, null);
    // Setup Component auto config fields
    setCommonServiceParams(c, srvMeta);
    // Check if we must provide a Component factory set (deprecated), or a ComponentFactory.
    if (factory == null && factoryName == null) {
        Log.instance().info("ComponentBuilder: building service %s with dependencies %s", srvMeta, depsMeta);
        String impl = srvMeta.getString(Params.impl);
        String composition = srvMeta.getString(Params.composition, null);
        String factoryMethod = srvMeta.getString(Params.factoryMethod, null);
        if (factoryMethod == null) {
            c.setImplementation(b.loadClass(impl));
        } else {
            c.setFactory(b.loadClass(impl), factoryMethod);
        }
        c.setComposition(composition);
        // Adds dependencies (except named dependencies, which are managed by the lifecycle
        // handler).
        addUnamedDependencies(b, dm, c, srvMeta, depsMeta);
        // Creates a ServiceHandler, which will filter all service lifecycle callbacks.
        ServiceLifecycleHandler lfcleHandler = new ServiceLifecycleHandler(c, b, dm, srvMeta, depsMeta);
        c.setCallbacks(lfcleHandler, "init", "start", "stop", "destroy");
        // Set the provided services
        Dictionary<String, Object> properties = srvMeta.getDictionary(Params.properties, null);
        String[] services = srvMeta.getStrings(Params.provides, null);
        c.setInterface(services, properties);
    } else if (factory != null) /* deprecated */
    {
        Log.instance().info("ComponentBuilder: providing factory set for service %s with dependencies %s", srvMeta, depsMeta);
        // We don't instantiate the service, but instead we provide a Set in the registry.
        // This Set will act as a factory and another component may registers some
        // service configurations into it in order to fire some service instantiations.
        FactorySet factorySet = new FactorySet(b, srvMeta, depsMeta);
        c.setImplementation(factorySet);
        c.setCallbacks(null, "start", "stop", null);
        Hashtable<String, String> props = new Hashtable<String, String>();
        props.put(ComponentBuilder.FACTORY_NAME, factory);
        c.setInterface(Set.class.getName(), props);
    } else if (factoryName != null) {
        Log.instance().info("ComponentBuilder: providing component factory for service %s with dependencies %s", srvMeta, depsMeta);
        // We don't instantiate the service, but instead we provide a ComponentFactory in the registry.
        // (similar to DS ComponentFactory).
        ComponentFactoryImpl compFactory = new ComponentFactoryImpl(b, srvMeta, depsMeta);
        c.setImplementation(compFactory);
        c.setCallbacks(null, "start", "stop", null);
        Hashtable<String, String> props = new Hashtable<String, String>();
        props.put(ComponentBuilder.FACTORY_NAME, factoryName);
        c.setInterface(ComponentFactory.class.getName(), props);
    }
    dm.add(c);
}