Examples of org.apache.tapestry.ioc.ObjectProvider

org.apache.tapestry.ioc.ObjectProvider
Object providers represent an alternate way to locate an object provided somewhere in the {@link org.apache.tapestry.ioc.Registry}. Instead of using a just the service id to gain access to a service within the Registry, object providers in different flavors are capable of vending, or even creating, objects of disparate types from disparate sources.
Object providers are consulted in a strict order, and the first non-null result is taken.
In many cases, an object provider searches for additional annotations on the element (usually a parameter, or perhaps a field) for which a value is required.
A default ObjectProvider uses {@link ObjectLocator#getService(Class)}.

        alias.setMode(mode);


        // Do not assume that infra and provider are the same;
        // that's an implementation choice.


        ObjectProvider provider = alias.getObjectProvider();


        // Run through a couple of times to ensure that values are cached.
        for (int i = 0; i < 2; i++)
        {
            Runnable actual = provider.provide(Runnable.class, annotationProvider, locator);


            assertSame(actual, r);
        }


        verify();

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        Alias alias = new AliasImpl(manager, overridesManager);


        alias.setMode(mode);


        ObjectProvider provider = alias.getObjectProvider();


        Runnable actual = provider.provide(Runnable.class, annotationProvider, locator);


        assertSame(actual, override);


        verify();
    }

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        alias.setMode(mode);


        // Do not assume that infra and provider are the same;
        // that's an implementation choice.


        ObjectProvider provider = alias.getObjectProvider();


        assertNull(provider.provide(Runnable.class, annotationProvider, locator));


        verify();


    }

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        Alias alias = new AliasImpl(manager, mode, overridesManager);


        // Do not assume that infra and provider are the same;
        // that's an implementation choice.


        ObjectProvider provider = alias.getObjectProvider();


        // Run through a couple of times to ensure that values are cached.
        for (int i = 0; i < 2; i++)
        {
            Runnable actual = provider.provide(Runnable.class, annotationProvider, locator);


            assertSame(actual, r);
        }


        verify();

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        replay();


        Alias alias = new AliasImpl(manager, mode, overridesManager);


        ObjectProvider provider = alias.getObjectProvider();


        Runnable actual = provider.provide(Runnable.class, annotationProvider, locator);


        assertSame(actual, override);


        verify();
    }

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        Alias alias = new AliasImpl(manager, mode, overridesManager);


        // Do not assume that infra and provider are the same;
        // that's an implementation choice.


        ObjectProvider provider = alias.getObjectProvider();


        assertNull(provider.provide(Runnable.class, annotationProvider, locator));


        verify();


    }

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        expect(webContext.getBean(BEAN_NAME, SampleBean.class)).andThrow(t);


        replay();


        ObjectProvider provider = new SpringObjectProvider(log, webContext);


        try
        {
            provider.provide(SampleBean.class, annotationProvider, locator);
            unreachable();
        }
        catch (RuntimeException ex)
        {
            assertEquals(

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        expect(webContext.getBean(BEAN_NAME, SampleBean.class)).andReturn(bean);


        replay();


        ObjectProvider provider = new SpringObjectProvider(log, webContext);


        assertSame(provider.provide(SampleBean.class, annotationProvider, locator), bean);


        verify();
    }

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        expect(webContext.getBean(BEAN_NAME, SampleBean.class)).andReturn(bean);


        replay();


        ObjectProvider provider = new SpringObjectProvider(log, webContext);


        assertSame(provider.provide(SampleBean.class, annotationProvider, locator), bean);


        verify();
    }

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        expect(webContext.getBean(BEAN_NAME, SampleBean.class)).andReturn(bean);


        replay();


        ObjectProvider provider = new SpringObjectProvider(log, webContext);


        assertSame(provider.provide(SampleBean.class, annotationProvider, locator), bean);


        verify();
    }

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org.apache.tapestry.internal.services.ServiceAnnotationObjectProviderTest

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