Package org.apache.felix.scr.integration.components

Examples of org.apache.felix.scr.integration.components.SimpleServiceImpl

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    {
        final Component component = findComponentByName( "test_optional_single_static" );
        TestCase.assertNotNull( component );
        TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );

        final SimpleServiceImpl srv1 = SimpleServiceImpl.create( bundleContext, "srv1" );

        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp10 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp10 );
        TestCase.assertEquals( srv1, comp10.m_singleRef );
        TestCase.assertTrue( comp10.m_multiRef.isEmpty() );

        srv1.drop();
        delay(); // async reactivate

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp11 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp10, comp11 );
        TestCase.assertNull( comp11.m_singleRef );
        TestCase.assertTrue( comp11.m_multiRef.isEmpty() );

        final SimpleServiceImpl srv2 = SimpleServiceImpl.create( bundleContext, "srv2" );
        delay(); // async binding

        // greedy static reference rebinds
        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp12 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp10, comp12 );
        TestCase.assertNotSame( comp11, comp12 );
        TestCase.assertEquals( srv2, comp12.m_singleRef );
        TestCase.assertTrue( comp12.m_multiRef.isEmpty() );

        component.disable();
        delay(); // async disabling

        final SimpleServiceImpl srv3 = SimpleServiceImpl.create( bundleContext, "srv3" );

        // enable component with two services available, expect srv2 bind
        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp20 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp20 );
        TestCase.assertNotSame( comp10, comp20 );
        TestCase.assertEquals( srv2, comp20.m_singleRef );
        TestCase.assertTrue( comp20.m_multiRef.isEmpty() );

        // drop srv2, expect rebind to srv3 (synchronously)
        srv2.drop();
        delay(); // async reactivate

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp21 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp21 );
        TestCase.assertEquals( srv3, comp21.m_singleRef );
        TestCase.assertTrue( comp21.m_multiRef.isEmpty() );

        // create srv4 of lower rank, expect no rebind
        final SimpleServiceImpl srv4 = SimpleServiceImpl.create( bundleContext, "srv4", -1 );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp22 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp22 );
        TestCase.assertSame( comp21, comp22 );
        TestCase.assertEquals( srv3, comp22.m_singleRef );
        TestCase.assertTrue( comp22.m_multiRef.isEmpty() );

        // drop srv4 again, expect no rebind
        srv4.drop();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp23 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp23 );
        TestCase.assertSame( comp21, comp23 );
        TestCase.assertSame( comp22, comp23 );
        TestCase.assertEquals( srv3, comp23.m_singleRef );
        TestCase.assertTrue( comp23.m_multiRef.isEmpty() );

        // "reset"
        component.disable();
        srv3.drop();
        delay();

        // two services with service ranking (srv6 > srv5)
        final SimpleServiceImpl srv5 = SimpleServiceImpl.create( bundleContext, "srv5", 10 );
        final SimpleServiceImpl srv6 = SimpleServiceImpl.create( bundleContext, "srv6", 20 );

        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp30 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp23, comp30 );
        TestCase.assertEquals( srv6, comp30.m_singleRef );
        TestCase.assertTrue( comp30.m_multiRef.isEmpty() );

        // another service with higher ranking rebind !
        final SimpleServiceImpl srv7 = SimpleServiceImpl.create( bundleContext, "srv7", 30 );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp31 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp30, comp31 );
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    {
        final Component component = findComponentByName( "test_required_single_static" );
        TestCase.assertNotNull( component );
        TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );

        final SimpleServiceImpl srv1 = SimpleServiceImpl.create( bundleContext, "srv1" );

        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp10 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp10 );
        TestCase.assertEquals( srv1, comp10.m_singleRef );
        TestCase.assertTrue( comp10.m_multiRef.isEmpty() );

        srv1.drop();
        delay(); // async reactivate

        TestCase.assertEquals( Component.STATE_UNSATISFIED, component.getState() );
        final SimpleComponent comp11 = SimpleComponent.INSTANCE;
        TestCase.assertNull( comp11 );

        final SimpleServiceImpl srv2 = SimpleServiceImpl.create( bundleContext, "srv2" );
        delay(); // async binding

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp12 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp10, comp12 );
        TestCase.assertEquals( srv2, comp12.m_singleRef );
        TestCase.assertTrue( comp12.m_multiRef.isEmpty() );

        component.disable();
        delay(); // async disabling

        final SimpleServiceImpl srv3 = SimpleServiceImpl.create( bundleContext, "srv3" );

        // enable component with two services available, expect srv2 bind
        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp20 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp20 );
        TestCase.assertNotSame( comp10, comp20 );
        TestCase.assertEquals( srv2, comp20.m_singleRef );
        TestCase.assertTrue( comp20.m_multiRef.isEmpty() );

        // drop srv2, expect rebind to srv3
        srv2.drop();
        delay(); // async reactivate

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp21 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp21 );
        TestCase.assertEquals( srv3, comp21.m_singleRef );
        TestCase.assertTrue( comp21.m_multiRef.isEmpty() );

        // create srv4, expect no rebind
        final SimpleServiceImpl srv4 = SimpleServiceImpl.create( bundleContext, "srv4" );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp22 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp22 );
        TestCase.assertSame( comp21, comp22 );
        TestCase.assertEquals( srv3, comp22.m_singleRef );
        TestCase.assertTrue( comp22.m_multiRef.isEmpty() );

        // drop srv4 again, expect no rebind
        srv4.drop();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp23 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp23 );
        TestCase.assertSame( comp21, comp23 );
        TestCase.assertSame( comp22, comp23 );
        TestCase.assertEquals( srv3, comp23.m_singleRef );
        TestCase.assertTrue( comp23.m_multiRef.isEmpty() );

        // "reset"
        component.disable();
        srv3.drop();
        delay();

        // two services with service ranking (srv6 > srv5)
        final SimpleServiceImpl srv5 = SimpleServiceImpl.create( bundleContext, "srv5", 10 );
        final SimpleServiceImpl srv6 = SimpleServiceImpl.create( bundleContext, "srv6", 20 );

        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp30 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp23, comp30 );
        TestCase.assertEquals( srv6, comp30.m_singleRef );
        TestCase.assertTrue( comp30.m_multiRef.isEmpty() );

        // another service with higher ranking -- rebind !
        final SimpleServiceImpl srv7 = SimpleServiceImpl.create( bundleContext, "srv7", 30 );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp31 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp30, comp31 );
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    {
        final Component component = findComponentByName( "test_optional_multiple_static" );
        TestCase.assertNotNull( component );
        TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );

        final SimpleServiceImpl srv1 = SimpleServiceImpl.create( bundleContext, "srv1" );

        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp10 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp10 );
        TestCase.assertNull( comp10.m_singleRef );
        TestCase.assertTrue( comp10.m_multiRef.contains( srv1 ) );

        srv1.drop();
        delay(); // async reactivate

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp11 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp10, comp11 );
        TestCase.assertNull( comp11.m_singleRef );
        TestCase.assertTrue( comp11.m_multiRef.isEmpty() );

        final SimpleServiceImpl srv2 = SimpleServiceImpl.create( bundleContext, "srv2" );
        delay(); // async binding

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp12 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp10, comp12 );
        TestCase.assertNotSame( comp11, comp12 );
        TestCase.assertNull( comp12.m_singleRef );
        TestCase.assertTrue( comp12.m_multiRef.contains( srv2 ) );

        component.disable();
        delay(); // async disabling

        final SimpleServiceImpl srv3 = SimpleServiceImpl.create( bundleContext, "srv3" );

        // enable component with two services available, expect both bind
        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp20 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp20 );
        TestCase.assertNotSame( comp10, comp20 );
        TestCase.assertNotSame( comp11, comp20 );
        TestCase.assertNotSame( comp12, comp20 );
        TestCase.assertNull( comp20.m_singleRef );
        TestCase.assertTrue( comp20.m_multiRef.contains( srv2 ) );
        TestCase.assertTrue( comp20.m_multiRef.contains( srv3 ) );

        srv2.drop();
        delay(); // async reactivate

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp21 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp21 );
        TestCase.assertNull( comp21.m_singleRef );
        TestCase.assertFalse( comp21.m_multiRef.contains( srv2 ) );
        TestCase.assertTrue( comp21.m_multiRef.contains( srv3 ) );

        // create srv4, expect greedy bind (static case)
        final SimpleServiceImpl srv4 = SimpleServiceImpl.create( bundleContext, "srv4" );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp22 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp22 );
        TestCase.assertNotSame( comp21, comp22 );
        TestCase.assertNull( comp22.m_singleRef );
        TestCase.assertFalse( comp22.m_multiRef.contains( srv2 ) );
        TestCase.assertTrue( comp22.m_multiRef.contains( srv3 ) );
        TestCase.assertTrue( comp22.m_multiRef.contains( srv4 ) );

        // drop srv4 again, expect rebind
        srv4.drop();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp23 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp23 );
        TestCase.assertNotSame( comp21, comp23 );
        TestCase.assertNotSame( comp22, comp23 );
        TestCase.assertNull( comp23.m_singleRef );
        TestCase.assertFalse( comp23.m_multiRef.contains( srv2 ) );
        TestCase.assertTrue( comp23.m_multiRef.contains( srv3 ) );
        TestCase.assertFalse( comp23.m_multiRef.contains( srv4 ) );

        // "reset"
        component.disable();
        srv3.drop();
        delay();

        // two services with service ranking (srv6 > srv5)
        final SimpleServiceImpl srv5 = SimpleServiceImpl.create( bundleContext, "srv5", 10 );
        final SimpleServiceImpl srv6 = SimpleServiceImpl.create( bundleContext, "srv6", 20 );

        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp30 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp23, comp30 );
        TestCase.assertNull( comp30.m_singleRef );
        TestCase.assertTrue( comp30.m_multiRef.contains( srv5 ) );
        TestCase.assertTrue( comp30.m_multiRef.contains( srv6 ) );

        // another service with higher ranking -- greedy rebind !
        final SimpleServiceImpl srv7 = SimpleServiceImpl.create( bundleContext, "srv7", 30 );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp31 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp30, comp31 );
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    {
        final Component component = findComponentByName( "test_required_multiple_static" );
        TestCase.assertNotNull( component );
        TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );

        final SimpleServiceImpl srv1 = SimpleServiceImpl.create( bundleContext, "srv1" );

        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp10 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp10 );
        TestCase.assertNull( comp10.m_singleRef );
        TestCase.assertTrue( comp10.m_multiRef.contains( srv1 ) );

        srv1.drop();
        delay(); // async reactivate

        TestCase.assertEquals( Component.STATE_UNSATISFIED, component.getState() );
        final SimpleComponent comp11 = SimpleComponent.INSTANCE;
        TestCase.assertNull( comp11 );

        final SimpleServiceImpl srv2 = SimpleServiceImpl.create( bundleContext, "srv2" );
        delay(); // async binding

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp12 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp10, comp12 );
        TestCase.assertNull( comp12.m_singleRef );
        TestCase.assertTrue( comp12.m_multiRef.contains( srv2 ) );

        component.disable();
        delay(); // async disabling

        final SimpleServiceImpl srv3 = SimpleServiceImpl.create( bundleContext, "srv3" );

        // enable component with two services available, expect both bind
        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp20 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp20 );
        TestCase.assertNotSame( comp10, comp20 );
        TestCase.assertNotSame( comp12, comp20 );
        TestCase.assertNull( comp20.m_singleRef );
        TestCase.assertTrue( comp20.m_multiRef.contains( srv2 ) );
        TestCase.assertTrue( comp20.m_multiRef.contains( srv3 ) );

        srv2.drop();
        delay(); // async reactivate

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp21 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp21 );
        TestCase.assertNull( comp21.m_singleRef );
        TestCase.assertFalse( comp21.m_multiRef.contains( srv2 ) );
        TestCase.assertTrue( comp21.m_multiRef.contains( srv3 ) );

        // create srv4, expect greedy bind
        final SimpleServiceImpl srv4 = SimpleServiceImpl.create( bundleContext, "srv4" );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp22 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp22 );
        TestCase.assertNotSame( comp21, comp22 );
        TestCase.assertNull( comp22.m_singleRef );
        TestCase.assertFalse( comp22.m_multiRef.contains( srv2 ) );
        TestCase.assertTrue( comp22.m_multiRef.contains( srv3 ) );
        TestCase.assertTrue( comp22.m_multiRef.contains( srv4 ) );

        // drop srv4 again, expect greedy rebind
        srv4.drop();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp23 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp23 );
        TestCase.assertNotSame( comp21, comp23 );
        TestCase.assertNotSame( comp22, comp23 );
        TestCase.assertNull( comp23.m_singleRef );
        TestCase.assertFalse( comp23.m_multiRef.contains( srv2 ) );
        TestCase.assertTrue( comp23.m_multiRef.contains( srv3 ) );
        TestCase.assertFalse( comp23.m_multiRef.contains( srv4 ) );

        // "reset"
        component.disable();
        srv3.drop();
        delay();

        // two services with service ranking (srv6 > srv5)
        final SimpleServiceImpl srv5 = SimpleServiceImpl.create( bundleContext, "srv5", 10 );
        final SimpleServiceImpl srv6 = SimpleServiceImpl.create( bundleContext, "srv6", 20 );

        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp30 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp23, comp30 );
        TestCase.assertNull( comp30.m_singleRef );
        TestCase.assertTrue( comp30.m_multiRef.contains( srv5 ) );
        TestCase.assertTrue( comp30.m_multiRef.contains( srv6 ) );

        // another service with higher ranking -- greedy rebind !
        final SimpleServiceImpl srv7 = SimpleServiceImpl.create( bundleContext, "srv7", 30 );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp31 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp30, comp31 );
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    @Test
    public void test_SimpleComponent_dynamic_configuration_with_required_service()
    {
        final String targetProp = "ref.target";
        final String filterProp = "required";
        final SimpleServiceImpl service = SimpleServiceImpl.create( bundleContext, "sample" ).setFilterProperty( filterProp );
        try
        {
            final String pid = "DynamicConfigurationComponentWithRequiredReference";
            final Component component = findComponentByName( pid );

            deleteConfig( pid );
            delay();

            TestCase.assertNotNull( component );
            TestCase.assertFalse( component.isDefaultEnabled() );

            TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );
            TestCase.assertNull( SimpleComponent.INSTANCE );

            component.enable();
            delay();

            // mandatory ref missing --> component unsatisfied
            TestCase.assertEquals( Component.STATE_UNSATISFIED, component.getState() );

            // dynamically configure without the correct target
            configure( pid );
            delay();

            // mandatory ref missing --> component unsatisfied
            TestCase.assertEquals( Component.STATE_UNSATISFIED, component.getState() );

            // dynamically configure with correct target
            theConfig.put( targetProp, "(filterprop=" + filterProp + ")" );
            configure( pid );
            delay();

            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertNotNull( SimpleComponent.INSTANCE );
            TestCase.assertEquals( PROP_NAME, SimpleComponent.INSTANCE.getProperty( PROP_NAME ) );
            TestCase.assertEquals( pid, SimpleComponent.INSTANCE.getProperty( Constants.SERVICE_PID ) );

            final SimpleComponent instance = SimpleComponent.INSTANCE;

            configure( pid );
            delay();

            // same instance after reconfiguration
            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertEquals( instance, SimpleComponent.INSTANCE );
            TestCase.assertEquals( PROP_NAME, SimpleComponent.INSTANCE.getProperty( PROP_NAME ) );
            TestCase.assertEquals( pid, SimpleComponent.INSTANCE.getProperty( Constants.SERVICE_PID ) );
            TestCase.assertNotNull( SimpleComponent.INSTANCE.m_singleRef );

            // reconfigure without target --> unsatisifed
            theConfig.remove( targetProp );
            configure( pid );
            delay();

            // mandatory ref missing --> component unsatisfied
            TestCase.assertEquals( Component.STATE_UNSATISFIED, component.getState() );

            deleteConfig( pid );
            delay();

            // mandatory ref missing --> component unsatisfied
            TestCase.assertEquals( Component.STATE_UNSATISFIED, component.getState() );

            component.disable();
            delay();

            TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );
            TestCase.assertNull( SimpleComponent.INSTANCE );
        }
        finally
        {
            theConfig.remove( targetProp );
            if ( service != null )
            {
                service.drop();
            }
        }
    }
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    public void test_SimpleComponent_dynamic_configuration_with_required_service2()
    {
        final String targetProp = "ref.target";
        final String filterProp1 = "one";
        final String filterProp2 = "two";
        final SimpleServiceImpl service1 = SimpleServiceImpl.create( bundleContext, "one", 1 ).setFilterProperty( filterProp1 );
        final SimpleServiceImpl service2 = SimpleServiceImpl.create( bundleContext, "two", 2 ).setFilterProperty( filterProp2 );
        try
        {
            final String pid = "DynamicConfigurationComponentWithRequiredReference";
            final Component component = findComponentByName( pid );

            deleteConfig( pid );
            delay();

            TestCase.assertNotNull( component );
            TestCase.assertFalse( component.isDefaultEnabled() );

            TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );
            TestCase.assertNull( SimpleComponent.INSTANCE );

            component.enable();
            delay();

            // mandatory ref missing --> component unsatisfied
            TestCase.assertEquals( Component.STATE_UNSATISFIED, component.getState() );

            // dynamically configure without the correct target
            configure( pid );
            delay();

            // mandatory ref missing --> component unsatisfied
            TestCase.assertEquals( Component.STATE_UNSATISFIED, component.getState() );

            // dynamically configure with correct target
            theConfig.put( targetProp, "(|(filterprop=" + filterProp1 + ")(filterprop=" + filterProp2 + "))" );
            configure( pid );
            delay();

            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertNotNull( SimpleComponent.INSTANCE );
            TestCase.assertEquals( PROP_NAME, SimpleComponent.INSTANCE.getProperty( PROP_NAME ) );
            TestCase.assertEquals( pid, SimpleComponent.INSTANCE.getProperty( Constants.SERVICE_PID ) );

            final SimpleComponent instance = SimpleComponent.INSTANCE;

            configure( pid );
            delay();

            //remove higher ranked service
            if (service2 != null)
            {
                service2.drop();
            }
             // same instance after reconfiguration
            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertEquals( instance, SimpleComponent.INSTANCE );
            TestCase.assertEquals( PROP_NAME, SimpleComponent.INSTANCE.getProperty( PROP_NAME ) );
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    @Test
    public void test_SimpleComponent_dynamic_configuration_with_optional_service() throws Exception
    {
        final String targetProp = "ref.target";
        final String filterProp = "required";
        final SimpleServiceImpl service = SimpleServiceImpl.create( bundleContext, "sample" ).setFilterProperty( filterProp );
        try
        {
            final String pid = "DynamicConfigurationComponentWithOptionalReference";
            final Component component = findComponentByName( pid );

            deleteConfig( pid );
            delay();

            TestCase.assertNotNull( component );
            TestCase.assertFalse( component.isDefaultEnabled() );

            TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );
            TestCase.assertNull( SimpleComponent.INSTANCE );

            component.enable();
            delay();

            // optional ref missing --> component active
            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertNotNull( SimpleComponent.INSTANCE );
            final SimpleComponent instance = SimpleComponent.INSTANCE;

            // dynamically configure without the correct target
            configure( pid );
            delay();

            // optional ref missing --> component active
            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertEquals( instance, SimpleComponent.INSTANCE );
            TestCase.assertNull( SimpleComponent.INSTANCE.m_singleRef );

            // dynamically configure with correct target
            theConfig.put( targetProp, "(filterprop=" + filterProp + ")" );
            configure( pid );
            delay();

            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertEquals( instance, SimpleComponent.INSTANCE );
            TestCase.assertEquals( PROP_NAME, SimpleComponent.INSTANCE.getProperty( PROP_NAME ) );
            TestCase.assertEquals( pid, SimpleComponent.INSTANCE.getProperty( Constants.SERVICE_PID ) );
            TestCase.assertNotNull( SimpleComponent.INSTANCE.m_singleRef );

            configure( pid );
            delay();

            // same instance after reconfiguration
            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertEquals( instance, SimpleComponent.INSTANCE );
            TestCase.assertEquals( PROP_NAME, SimpleComponent.INSTANCE.getProperty( PROP_NAME ) );
            TestCase.assertEquals( pid, SimpleComponent.INSTANCE.getProperty( Constants.SERVICE_PID ) );
            TestCase.assertNotNull( SimpleComponent.INSTANCE.m_singleRef );

            // reconfigure without target --> active
            theConfig.remove( targetProp );
            configure( pid );
            delay();

            // optional ref missing --> component active
            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertEquals( instance, SimpleComponent.INSTANCE );
            TestCase.assertNull( SimpleComponent.INSTANCE.m_singleRef );

            deleteConfig( pid );
            delay();

            // optional ref missing --> component active
            TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
            TestCase.assertEquals( instance, SimpleComponent.INSTANCE );
            TestCase.assertNull( SimpleComponent.INSTANCE.m_singleRef );

            component.disable();
            delay();

            TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );
            TestCase.assertNull( SimpleComponent.INSTANCE );
        }
        finally
        {
//            Thread.sleep( 60000 );
            theConfig.remove( targetProp );
            if ( service != null )
            {
                service.drop();
            }
        }
    }
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        TestCase.assertEquals( 1, serviceReferences.length );
        ServiceReference serviceReference = serviceReferences[0];
        checkProperties( serviceReference, 8, "otherValue", "p1", "p2" );
        MutatingService s = ( MutatingService ) bundleContext.getService( serviceReference );

        SimpleServiceImpl srv1 = SimpleServiceImpl.create( bundleContext, "srv1" );
        checkProperties( serviceReference, 5, null, "p1", "p2" );
        Assert.assertEquals("bound", serviceReference.getProperty("SimpleService"));

        srv1.update( "foo" );
        checkProperties( serviceReference, 5, null, "p1", "p2" );
        Assert.assertEquals("updated", serviceReference.getProperty("SimpleService"));

        srv1.drop();
        checkProperties( serviceReference, 5, null, "p1", "p2" );
        Assert.assertEquals("unbound", serviceReference.getProperty("SimpleService"));

        bundleContext.ungetService(serviceReference);
    }
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    {
        final Component component = findComponentByName( "test_optional_single_dynamic" );
        TestCase.assertNotNull( component );
        TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );

        final SimpleServiceImpl srv1 = SimpleServiceImpl.create( bundleContext, "srv1" );

        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp10 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp10 );
        TestCase.assertEquals( srv1, comp10.m_singleRef );
        TestCase.assertTrue( comp10.m_multiRef.isEmpty() );

        srv1.drop();
        // no delay, should be immediate

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp11 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp10, comp11 );
        TestCase.assertNull( comp11.m_singleRef );
        TestCase.assertTrue( comp11.m_multiRef.isEmpty() );

        final SimpleServiceImpl srv2 = SimpleServiceImpl.create( bundleContext, "srv2" );
        delay(); // async binding

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp12 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp10, comp12 );
        TestCase.assertEquals( srv2, comp12.m_singleRef );
        TestCase.assertTrue( comp12.m_multiRef.isEmpty() );

        component.disable();
        delay(); // async disabling

        final SimpleServiceImpl srv3 = SimpleServiceImpl.create( bundleContext, "srv3" );

        // enable component with two services available, expect srv2 bind
        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp20 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp20 );
        TestCase.assertNotSame( comp10, comp20 );
        TestCase.assertEquals( srv2, comp20.m_singleRef );
        TestCase.assertTrue( comp20.m_multiRef.isEmpty() );

        // drop srv2, expect rebind to srv3 (synchronously)
        srv2.drop();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp21 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp20, comp21 );
        TestCase.assertEquals( srv3, comp21.m_singleRef );
        TestCase.assertTrue( comp21.m_multiRef.isEmpty() );

        // create srv4, expect no rebind
        final SimpleServiceImpl srv4 = SimpleServiceImpl.create( bundleContext, "srv4" );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp22 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp20, comp22 );
        TestCase.assertEquals( srv3, comp22.m_singleRef );
        TestCase.assertTrue( comp22.m_multiRef.isEmpty() );

        // drop srv4 again, expect no rebind
        srv4.drop();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp23 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp20, comp23 );
        TestCase.assertEquals( srv3, comp23.m_singleRef );
        TestCase.assertTrue( comp23.m_multiRef.isEmpty() );

        // "reset"
        component.disable();
        srv3.drop();
        delay();

        // two services with service ranking (srv6 > srv5)
        final SimpleServiceImpl srv5 = SimpleServiceImpl.create( bundleContext, "srv5", 10 );
        final SimpleServiceImpl srv6 = SimpleServiceImpl.create( bundleContext, "srv6", 20 );

        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp30 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp30 );
        TestCase.assertEquals( srv6, comp30.m_singleRef );
        TestCase.assertTrue( comp30.m_multiRef.isEmpty() );

        // another service with higher ranking -- no rebind !
        final SimpleServiceImpl srv7 = SimpleServiceImpl.create( bundleContext, "srv7", 30 );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp31 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp30, comp31 );
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    {
        final Component component = findComponentByName( "test_required_single_dynamic" );
        TestCase.assertNotNull( component );
        TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );

        final SimpleServiceImpl srv1 = SimpleServiceImpl.create( bundleContext, "srv1" );

        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp10 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp10 );
        TestCase.assertEquals( srv1, comp10.m_singleRef );
        TestCase.assertTrue( comp10.m_multiRef.isEmpty() );

        srv1.drop();
        // no delay, should be immediate

        TestCase.assertEquals( Component.STATE_UNSATISFIED, component.getState() );
        final SimpleComponent comp11 = SimpleComponent.INSTANCE;
        TestCase.assertNull( comp11 );

        final SimpleServiceImpl srv2 = SimpleServiceImpl.create( bundleContext, "srv2" );
        delay(); // async binding

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp12 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp10, comp12 );
        TestCase.assertEquals( srv2, comp12.m_singleRef );
        TestCase.assertTrue( comp12.m_multiRef.isEmpty() );

        component.disable();
        delay(); // async disabling

        final SimpleServiceImpl srv3 = SimpleServiceImpl.create( bundleContext, "srv3" );

        // enable component with two services available, expect srv2 bind
        // async enabling
        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp20 = SimpleComponent.INSTANCE;
        TestCase.assertNotNull( comp20 );
        TestCase.assertNotSame( comp10, comp20 );
        TestCase.assertEquals( srv2, comp20.m_singleRef );
        TestCase.assertTrue( comp20.m_multiRef.isEmpty() );

        // drop srv2, expect rebind to srv3 (synchronously)
        srv2.drop();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp21 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp20, comp21 );
        TestCase.assertEquals( srv3, comp21.m_singleRef );
        TestCase.assertTrue( comp21.m_multiRef.isEmpty() );

        // create srv4, expect no rebind
        final SimpleServiceImpl srv4 = SimpleServiceImpl.create( bundleContext, "srv4" );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp22 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp20, comp22 );
        TestCase.assertEquals( srv3, comp22.m_singleRef );
        TestCase.assertTrue( comp22.m_multiRef.isEmpty() );

        // drop srv4 again, expect no rebind
        srv4.drop();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp23 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp20, comp23 );
        TestCase.assertEquals( srv3, comp23.m_singleRef );
        TestCase.assertTrue( comp23.m_multiRef.isEmpty() );

        // "reset"
        component.disable();
        srv3.drop();
        delay();

        // two services with service ranking (srv6 > srv5)
        final SimpleServiceImpl srv5 = SimpleServiceImpl.create( bundleContext, "srv5", 10 );
        final SimpleServiceImpl srv6 = SimpleServiceImpl.create( bundleContext, "srv6", 20 );

        component.enable();
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp30 = SimpleComponent.INSTANCE;
        TestCase.assertNotSame( comp20, comp30 );
        TestCase.assertEquals( srv6, comp30.m_singleRef );
        TestCase.assertTrue( comp30.m_multiRef.isEmpty() );

        // another service with higher ranking -- no rebind !
        final SimpleServiceImpl srv7 = SimpleServiceImpl.create( bundleContext, "srv7", 30 );
        delay();

        TestCase.assertEquals( Component.STATE_ACTIVE, component.getState() );
        final SimpleComponent comp31 = SimpleComponent.INSTANCE;
        TestCase.assertSame( comp30, comp31 );
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