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 $

    }


    final public void testSER_isXStreamSerializable() {
        if (JVM.is14()) {
            if ((getComponentAdapterNature() & SERIALIZABLE) > 0) {
                final MutablePicoContainer picoContainer = new DefaultPicoContainer(createDefaultComponentAdapterFactory());
                final ComponentAdapter componentAdapter = prepSER_isXStreamSerializable(picoContainer);
                assertSame(getComponentAdapterType(), componentAdapter.getClass());
                final Object instance = componentAdapter.getComponentInstance(picoContainer);
                assertNotNull(instance);
                final XStream xstream = new XStream(new XppDriver());

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        throw new AssertionFailedError("You have to overwrite this method for a useful test");
    }


    final public void testVER_verificationFails() {
        if ((getComponentAdapterNature() & VERIFYING) > 0) {
            final MutablePicoContainer picoContainer = new DefaultPicoContainer(createDefaultComponentAdapterFactory());
            final ComponentAdapter componentAdapter = prepVER_verificationFails(picoContainer);
            assertSame(getComponentAdapterType(), componentAdapter.getClass());
            try {
                componentAdapter.verify(picoContainer);
                fail("PicoIntrospectionException expected");

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        throw new AssertionFailedError("You have to overwrite this method for a useful test");
    }


    final public void testINS_createsNewInstances() {
        if ((getComponentAdapterNature() & INSTANTIATING) > 0) {
            final MutablePicoContainer picoContainer = new DefaultPicoContainer(createDefaultComponentAdapterFactory());
            final ComponentAdapter componentAdapter = prepINS_createsNewInstances(picoContainer);
            assertSame(getComponentAdapterType(), componentAdapter.getClass());
            final Object instance = componentAdapter.getComponentInstance(picoContainer);
            assertNotNull(instance);
            assertNotSame(instance, componentAdapter.getComponentInstance(picoContainer));

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        throw new AssertionFailedError("You have to overwrite this method for a useful test");
    }


    final public void testINS_errorIsRethrown() {
        if ((getComponentAdapterNature() & INSTANTIATING) > 0) {
            final MutablePicoContainer picoContainer = new DefaultPicoContainer(createDefaultComponentAdapterFactory());
            final ComponentAdapter componentAdapter = prepINS_errorIsRethrown(picoContainer);
            assertSame(getComponentAdapterType(), componentAdapter.getClass());
            try {
                componentAdapter.getComponentInstance(picoContainer);
                fail("Thrown Error excpected");

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        throw new AssertionFailedError("You have to overwrite this method for a useful test");
    }


    final public void testINS_runtimeExceptionIsRethrown() {
        if ((getComponentAdapterNature() & INSTANTIATING) > 0) {
            final MutablePicoContainer picoContainer = new DefaultPicoContainer(createDefaultComponentAdapterFactory());
            final ComponentAdapter componentAdapter = prepINS_runtimeExceptionIsRethrown(picoContainer);
            assertSame(getComponentAdapterType(), componentAdapter.getClass());
            try {
                componentAdapter.getComponentInstance(picoContainer);
                fail("Thrown RuntimeException excpected");

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        throw new AssertionFailedError("You have to overwrite this method for a useful test");
    }


    final public void testINS_normalExceptionIsRethrownInsidePicoInvocationTargetInitializationException() {
        if ((getComponentAdapterNature() & INSTANTIATING) > 0) {
            final MutablePicoContainer picoContainer = new DefaultPicoContainer(createDefaultComponentAdapterFactory());
            final ComponentAdapter componentAdapter = prepINS_normalExceptionIsRethrownInsidePicoInvocationTargetInitializationException(picoContainer);
            assertSame(getComponentAdapterType(), componentAdapter.getClass());
            try {
                componentAdapter.getComponentInstance(picoContainer);
                fail("Thrown PicoInvocationTargetInitializationException excpected");

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    final public void testRES_dependenciesAreResolved() {
        if ((getComponentAdapterNature() & RESOLVING) > 0) {
            final List dependencies = new LinkedList();
            final Object[] wrapperDependencies = new Object[]{dependencies};
            final MutablePicoContainer picoContainer = new DefaultPicoContainer(createDefaultComponentAdapterFactory());
            final ComponentAdapter componentAdapter = prepRES_dependenciesAreResolved(picoContainer);
            assertSame(getComponentAdapterType(), componentAdapter.getClass());
            assertFalse(picoContainer.getComponentAdapters().contains(componentAdapter));
            final PicoContainer wrappedPicoContainer = wrapComponentInstances(CollectingComponentAdapter.class, picoContainer, wrapperDependencies);
            final Object instance = componentAdapter.getComponentInstance(wrappedPicoContainer);
            assertNotNull(instance);
            assertTrue(dependencies.size() > 0);
        }

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    final public void testRES_failingVerificationWithCyclicDependencyException() {
        if ((getComponentAdapterNature() & RESOLVING) > 0) {
            final Set cycleInstances = new HashSet();
            final ObjectReference cycleCheck = new SimpleReference();
            final Object[] wrapperDependencies = new Object[]{cycleInstances, cycleCheck};
            final MutablePicoContainer picoContainer = new DefaultPicoContainer(createDefaultComponentAdapterFactory());
            final ComponentAdapter componentAdapter = prepRES_failingVerificationWithCyclicDependencyException(picoContainer);
            assertSame(getComponentAdapterType(), componentAdapter.getClass());
            assertTrue(picoContainer.getComponentAdapters().contains(componentAdapter));
            final PicoContainer wrappedPicoContainer = wrapComponentInstances(CycleDetectorComponentAdapter.class, picoContainer, wrapperDependencies);
            try {
                componentAdapter.verify(wrappedPicoContainer);
                fail("Thrown PicoVerificationException excpected");
            } catch (final CyclicDependencyException cycle) {

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    final public void testRES_failingInstantiationWithCyclicDependencyException() {
        if ((getComponentAdapterNature() & RESOLVING) > 0) {
            final Set cycleInstances = new HashSet();
            final ObjectReference cycleCheck = new SimpleReference();
            final Object[] wrapperDependencies = new Object[]{cycleInstances, cycleCheck};
            final MutablePicoContainer picoContainer = new DefaultPicoContainer(createDefaultComponentAdapterFactory());
            final ComponentAdapter componentAdapter = prepRES_failingInstantiationWithCyclicDependencyException(picoContainer);
            assertSame(getComponentAdapterType(), componentAdapter.getClass());
            assertTrue(picoContainer.getComponentAdapters().contains(componentAdapter));
            final PicoContainer wrappedPicoContainer = wrapComponentInstances(CycleDetectorComponentAdapter.class, picoContainer, wrapperDependencies);
            try {
                componentAdapter.getComponentInstance(wrappedPicoContainer);
                fail("Thrown CyclicDependencyException excpected");
            } catch (final CyclicDependencyException e) {

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        }
    }


    final protected PicoContainer wrapComponentInstances(final Class decoratingComponentAdapterClass, final PicoContainer picoContainer, final Object[] wrapperDependencies) {
        assertTrue(DecoratingComponentAdapter.class.isAssignableFrom(decoratingComponentAdapterClass));
        final MutablePicoContainer mutablePicoContainer = new DefaultPicoContainer();
        final int size = (wrapperDependencies != null ? wrapperDependencies.length : 0) + 1;
        final Collection allComponentAdapters = picoContainer.getComponentAdapters();
        for (final Iterator iter = allComponentAdapters.iterator(); iter.hasNext();) {
            final Parameter[] parameters = new Parameter[size];
            parameters[0] = new ConstantParameter(iter.next());
            for (int i = 1; i < parameters.length; i++) {
                parameters[i] = new ConstantParameter(wrapperDependencies[i - 1]);
            }
            final MutablePicoContainer instantiatingPicoContainer = new DefaultPicoContainer(new ConstructorInjectionComponentAdapterFactory());
            instantiatingPicoContainer.registerComponentImplementation("decorator", decoratingComponentAdapterClass, parameters);
            mutablePicoContainer.registerComponent((ComponentAdapter) instantiatingPicoContainer.getComponentInstance("decorator"));
        }
        return mutablePicoContainer;
    }

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