Examples of org.picocontainer.defaults.DefaultPicoContainer

org.picocontainer.defaults.DefaultPicoContainer

The Standard {@link PicoContainer}/ {@link MutablePicoContainer} implementation.Constructing a container c with a parent p container will cause c to look up components in p if they cannot be found inside c itself.

Using {@link Class} objects as keys to the various registerXXX() methods makesa subtle semantic difference:

If there are more than one registered components of the same type and one of them are registered with a {@link java.lang.Class} key of the corresponding type, this componentwill take precedence over other components during type resolution.

Another place where keys that are classes make a subtle difference is in {@link org.picocontainer.alternatives.ImplementationHidingComponentAdapter}.
@author Paul Hammant @author Aslak Hellesøy @author Jon Tirsén @author Thomas Heller @version $Revision: 1.8 $


    /**
     * Test if an instance can be assimilated.
     */
    public void testInstanceIsBorged() {
        final MutablePicoContainer mpc = new DefaultPicoContainer();
        final ComponentAdapter componentAdapter = new CachingComponentAdapter(new ConstructorInjectionComponentAdapter(
                CompatibleTouchable.class, CompatibleTouchable.class));
        mpc.registerComponent(new AssimilatingComponentAdapter(Touchable.class, componentAdapter));
        final CompatibleTouchable compatibleTouchable = (CompatibleTouchable) componentAdapter
                .getComponentInstance(mpc);
        final Touchable touchable = (Touchable) mpc.getComponentInstanceOfType(Touchable.class);
        assertFalse(compatibleTouchable.wasTouched());
        touchable.touch();
        assertTrue(compatibleTouchable.wasTouched());
        assertTrue(Proxy.isProxyClass(touchable.getClass()));
    }

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    /**
     * Test if the component key is preserved if it is not a class type.
     */
    public void testComponentKeyIsPreserved() {
        final MutablePicoContainer mpc = new DefaultPicoContainer();
        final ComponentAdapter componentAdapter = new CachingComponentAdapter(new ConstructorInjectionComponentAdapter(
                "Touchy", CompatibleTouchable.class));
        mpc.registerComponent(new AssimilatingComponentAdapter(Touchable.class, componentAdapter));
        final CompatibleTouchable compatibleTouchable = (CompatibleTouchable) componentAdapter
                .getComponentInstance(mpc);
        final Touchable touchable = (Touchable) mpc.getComponentInstance("Touchy");
        assertFalse(compatibleTouchable.wasTouched());
        touchable.touch();
        assertTrue(compatibleTouchable.wasTouched());
        assertTrue(Proxy.isProxyClass(touchable.getClass()));
    }

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    /**
     * Test if proxy generation is omitted, if types are compatible.
     */
    public void testAvoidUnnecessaryProxy() {
        final MutablePicoContainer mpc = new DefaultPicoContainer();
        mpc.registerComponent(new AssimilatingComponentAdapter(TestCase.class, new InstanceComponentAdapter(TestCase.class, this)));
        final TestCase self = (TestCase) mpc.getComponentInstanceOfType(TestCase.class);
        assertFalse(Proxy.isProxyClass(self.getClass()));
        assertSame(this, self);
    }

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    /**
     * Test if proxy generation is omitted, if types are compatible and that the component key is not changed.
     */
    public void testAvoidedProxyDoesNotChangeComponentKey() {
        final MutablePicoContainer mpc = new DefaultPicoContainer();
        mpc.registerComponent(new AssimilatingComponentAdapter(TestCase.class, new InstanceComponentAdapter(getClass(), this)));
        final TestCase self = (TestCase) mpc.getComponentInstance(getClass());
        assertNotNull(self);
        assertSame(this, self);
    }

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        final MutablePicoContainer pico = createPicoContainer(null);
        assertNull(pico.getComponentInstanceOfType(List.class));
    }


    public void testShouldReturnNonMutableParent() {
        DefaultPicoContainer parent = new DefaultPicoContainer();
        final MutablePicoContainer picoContainer = createPicoContainer(parent);
        assertNotSame(parent, picoContainer.getParent());
        assertFalse(picoContainer.getParent() instanceof MutablePicoContainer);
    }

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    /**
     * Test automatic assimilation of registered components.
     */
    public void testAutomaticAssimilation() {
        picoContainer = new DefaultPicoContainer(createComponentAdapterFactory());
        picoContainer.registerComponentImplementation(SimpleTouchable.class);
        picoContainer.registerComponentImplementation(AlternativeTouchable.class);
        picoContainer.registerComponentImplementation(CompatibleTouchable.class);
        final List list = picoContainer.getComponentInstancesOfType(Touchable.class);
        assertEquals(3, list.size());

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    /**
     * Creates a new container with a parent container.
     */
    public ImplementationHidingPicoContainer(ComponentAdapterFactory caf, PicoContainer parent, LifecycleManager lifecycleManager) {
        super(new DefaultPicoContainer(caf, parent, lifecycleManager));
        this.caf = caf;
        this.lifecycleManager = lifecycleManager;
    }

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            Assert.assertNull(datas[2]);
        }
    }


    public void testShouldAllowRegistrationOfArrayAsInstance() {
        MutablePicoContainer pico = new DefaultPicoContainer();


        Descriptor.DescriptorData[] datas = new Descriptor.DescriptorData[3];


        pico.registerComponentInstance(datas);
        pico.registerComponentImplementation(DescriptorDep.class);


        DescriptorDep descriptorDep = (DescriptorDep) pico.getComponentInstanceOfType(DescriptorDep.class);


        assertNotNull(descriptorDep);
    }

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public class HotSwappingComponentAdapterFactoryTestCase extends AbstractComponentAdapterFactoryTestCase {
    private HotSwappingComponentAdapterFactory implementationHidingComponentAdapterFactory = new HotSwappingComponentAdapterFactory(new DefaultComponentAdapterFactory());
    private CachingComponentAdapterFactory cachingComponentAdapterFactory = new CachingComponentAdapterFactory(implementationHidingComponentAdapterFactory);


    public void testComponentRegisteredWithInterfaceKeyOnlyImplementsThatInterfaceUsingStandardProxyfactory() {
        DefaultPicoContainer pico = new DefaultPicoContainer(new HotSwappingComponentAdapterFactory(new ConstructorInjectionComponentAdapterFactory()));
        pico.registerComponentImplementation(Collection.class, ArrayList.class);
        Object collection = pico.getComponentInstance(Collection.class);
        assertTrue(collection instanceof Collection);
        assertFalse(collection instanceof List);
        assertFalse(collection instanceof ArrayList);
    }

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        assertFalse(collection instanceof List);
        assertFalse(collection instanceof ArrayList);
    }


    public void testComponentRegisteredWithOtherKeyImplementsAllInterfacesUsingStandardProxyFactory() {
        DefaultPicoContainer pico = new DefaultPicoContainer(new HotSwappingComponentAdapterFactory(new ConstructorInjectionComponentAdapterFactory()));
        pico.registerComponentImplementation("list", ArrayList.class);
        Object collection = pico.getComponentInstance("list");
        assertTrue(collection instanceof List);
        assertFalse(collection instanceof ArrayList);
    }

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