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 $

        extends TestCase
        implements CollectionDemoClasses {
    private MutablePicoContainer pico;


    protected void setUp() throws Exception {
        pico = new DefaultPicoContainer();
    }

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    public void testShouldCreateBowlWithFishesFromParent() {


        // START SNIPPET: scope


        MutablePicoContainer parent = new DefaultPicoContainer();
        parent.registerComponentImplementation("Tom", Cod.class);
        parent.registerComponentImplementation("Harry", Cod.class);
        MutablePicoContainer child = new DefaultPicoContainer(parent);
        child.registerComponentImplementation("Dick", Cod.class);
        child.registerComponentImplementation(Bowl.class, Bowl.class, new Parameter[]{
            new ComponentParameter(Fish.class, false),
            new ComponentParameter(Cod.class, false)
        });
        Bowl bowl = (Bowl) child.getComponentInstance(Bowl.class);
        assertEquals(3, bowl.fishes.size());
        assertEquals(3, bowl.cods.size());


        // END SNIPPET: scope
    }

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    public void testShouldCreateBowlWith2CodsOnly() {


        // START SNIPPET: scopeOverlay


        MutablePicoContainer parent = new DefaultPicoContainer();
        parent.registerComponentImplementation("Tom", Cod.class);
        parent.registerComponentImplementation("Dick", Cod.class);
        parent.registerComponentImplementation("Harry", Cod.class);
        MutablePicoContainer child = new DefaultPicoContainer(parent);
        child.registerComponentImplementation("Dick", Shark.class);
        child.registerComponentImplementation(Bowl.class, Bowl.class, new Parameter[]{
            new ComponentParameter(Fish.class, false),
            new ComponentParameter(Cod.class, false)
        });
        Bowl bowl = (Bowl) child.getComponentInstance(Bowl.class);
        assertEquals(3, bowl.fishes.size());
        assertEquals(2, bowl.cods.size());


        // END SNIPPET: scopeOverlay
    }

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    public void testShouldCreateBowlWithoutTom() {


        // START SNIPPET: individualSelection


        MutablePicoContainer mpc = new DefaultPicoContainer();
        mpc.registerComponentImplementation("Tom", Cod.class);
        mpc.registerComponentImplementation("Dick", Cod.class);
        mpc.registerComponentImplementation("Harry", Cod.class);
        mpc.registerComponentImplementation("Sharky", Shark.class);
        mpc.registerComponentImplementation(Bowl.class, Bowl.class, new Parameter[]{
            new CollectionComponentParameter(Fish.class, false),
            new CollectionComponentParameter(Cod.class, false) {
                protected boolean evaluate(ComponentAdapter adapter) {
                    return !"Tom".equals(adapter.getComponentKey());
                }
            }
        });
        Cod tom = (Cod) mpc.getComponentInstance("Tom");
        Bowl bowl = (Bowl) mpc.getComponentInstance(Bowl.class);
        assertTrue(bowl.fishes.values().contains(tom));
        assertFalse(bowl.cods.values().contains(tom));


        // END SNIPPET: individualSelection
    }

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            return throwable;
        }
    }


    public void testPicoContainerCausesDeadlock() throws InterruptedException {
        DefaultPicoContainer container = createContainer();
        container.registerComponentImplementation("A", A.class);
        container.registerComponentImplementation("B", B.class);
        container.registerComponentImplementation("C", C.class);


        final int THREAD_COUNT = 2;
        List runnerList = new ArrayList(THREAD_COUNT);


        for (int i = 0; i < THREAD_COUNT; ++i) {

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            assertTrue("Deadlock occurred", runner.isFinished());
        }
    }


    private DefaultPicoContainer createContainer() {
        return new DefaultPicoContainer(
                new SynchronizedComponentAdapterFactory(
                        new ConstructorInjectionComponentAdapterFactory()));
    }

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            _runners = runnable;
        }
    }


    public void testArrayDependenciesAndVerification() {
        DefaultPicoContainer container = new DefaultPicoContainer();
        container.registerComponentImplementation(MockRunnable.class);
        container.registerComponentImplementation(OtherRunnable.class);
        container.registerComponentImplementation(MockRunner.class);


        // this will fail to resolve the Runnable array on the MockRunner
        VerifyingVisitor visitor = new VerifyingVisitor();
        visitor.traverse(container);


        container.start();
        assertNotNull(container.getComponentInstanceOfType(MockRunner.class));
    }

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    /*
      This bug as descripbed in the bug report, cannot be reproduced. Needs work.
    */
    public void testTheBug()
    {
        MutablePicoContainer pico = new DefaultPicoContainer( ) ;
        pico.registerComponentImplementation(Shark.class);
        pico.registerComponentImplementation(Cod.class);
        try {
            pico.registerComponentImplementation(Bowl.class);
            Bowl bowl = (Bowl) pico.getComponentInstance(Bowl.class);
            fail("Should have barfed here with UnsatisfiableDependenciesException");
            Fish[] fishes = bowl.getFishes( ) ;
            for( int i = 0 ; i < fishes.length ; i++ )
                System.out.println( "fish["+i+"]="+fishes[i] ) ;
        } catch (UnsatisfiableDependenciesException e) {

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            throw new NanoContainerMarkupException("Class not found:" + e.getMessage(), e);
        }
    }


    private MutablePicoContainer createMutablePicoContainer(String cafName, String monitorName, PicoContainer parentContainer) throws PicoCompositionException, ClassNotFoundException {
        MutablePicoContainer container = new DefaultPicoContainer(createComponentAdapterFactory(cafName), parentContainer);
        if ( !notSet(monitorName) ){
            ComponentMonitor monitor = createComponentMonitor(monitorName);
            ((ComponentMonitorStrategy)container).changeMonitor(monitor);
        }
        return container;

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                Element childElement = (Element) children.item(i);


                String permissionClassName = childElement.getAttribute(CLASSNAME);
                String action = childElement.getAttribute(CONTEXT);
                String value = childElement.getAttribute(VALUE);
                MutablePicoContainer mpc = new DefaultPicoContainer();
                mpc.registerComponentImplementation(Permission.class, Class.forName(permissionClassName),new Parameter[] {new ConstantParameter(action), new ConstantParameter(value)});


                Permission permission = (Permission) mpc.getComponentInstanceOfType(Permission.class);
                classPathElement.grantPermission(permission);
            }
        }


    }

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