Examples of org.apache.felix.dm.ResourceDependency

org.apache.felix.dm.ResourceDependency
A resource dependency is a dependency on a resource. A resource in this context is an object that is identified by a URL. Resources should somehow be provided by an external component, the resource provider. These dependencies then react on them becoming available or not. Use cases for such dependencies are resources that are embedded in bundles, in a workspace or some remote or local repository, etc. @author Felix Project Team

    public void testShareResourceDependencyWithMultipleServices() throws Exception {
        DependencyManager m = new DependencyManager(context);
        // helper class that ensures certain steps get executed in sequence
        Ensure e = new Ensure();
        // create a service provider and consumer
        ResourceDependency dependency = m.createResourceDependency().setFilter("(" + ResourceHandler.HOST + "=localhost)").setRequired(true);
        Component consumer1 = m.createComponent().setImplementation(new ResourceConsumer(e, 1)).add(dependency);
        Component consumer2 = m.createComponent().setImplementation(new ResourceConsumer(e, 2)).add(dependency);
        Component resourceProvider = m.createComponent().setImplementation(new ResourceProvider()).add(m.createServiceDependency().setService(ResourceHandler.class).setCallbacks("add", "remove"));;
        m.add(resourceProvider);
        m.add(consumer1);

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            }
            List dependencies = m_component.getDependencies();
            // the first dependency is always the dependency on the resource, which
            // will be replaced with a more specific dependency below
            dependencies.remove(0);
            ResourceDependency resourceDependency = m_manager.createResourceDependency()
                 .setResource(resource)
                 .setCallbacks(m_callbackInstance, m_callbackAdded, m_callbackChanged, null)
                 .setAutoConfig(m_callbackAdded == null)
                 .setRequired(true);
            if (m_propagateCallbackInstance != null && m_propagateCallbackMethod != null) {
                resourceDependency.setPropagate(m_propagateCallbackInstance, m_propagateCallbackMethod);
            } else {
                resourceDependency.setPropagate(m_propagate);
            }
            Component service = m_manager.createComponent()
                .setInterface(m_serviceInterfaces, props)
                .setImplementation(m_serviceImpl)
                .setFactory(m_factory, m_factoryCreateMethod) // if not set, no effect

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    private Dependency createResourceDependency(DependencyManager dm, String added,
        String changed, String removed, boolean required, String filter, boolean propagate, 
        String autoConfigField, boolean instanceBound)
    {
        ResourceDependency rd = dm.createResourceDependency();
        rd.setCallbacks(added, changed, removed);
        rd.setRequired(required);
        if (filter != null)
        {
            rd.setFilter(filter);
        }
        if (autoConfigField != null)
        {
            rd.setAutoConfig(autoConfigField);
        }
        rd.setPropagate(propagate);
        rd.setInstanceBound(instanceBound);
        return rd;
    }

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Related Classes of org.apache.felix.dm.ResourceDependency

org.apache.felix.dm.impl.ResourceAdapterServiceImpl$ResourceAdapterImpl

org.apache.felix.dm.runtime.DependencyBuilder

org.apache.felix.dm.test.integration.api.SharingDependenciesWithMultipleServicesTest

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