Examples of org.apache.tapestry5.Binding

org.apache.tapestry5.Binding
A binding is a connection between a component and its container (another component), that allows the embedded component to gain access to resources defined by the container. Resources can represent any kind of value that can be obtained from the parent component, but is often a JavaBean property that can be read and updated. Different implementations of Binding are used to access different kinds of resources of the container.
A binding ultimately must provide access to the underlying annotations. In most cases, there are no annotations, but bindings that ultimate invoke methods or read and update fields must provide access to those annotations.

        ComponentResources resources = newComponentResources(bean);
        Location l = mockLocation();


        replay();


        Binding binding = factory.newBinding("test binding", resources, null, "intValue", l);


        assertSame(binding.getBindingType(), int.class);


        bean.setIntValue(1);


        assertEquals(binding.get(), 1);


        binding.set(2);


        assertEquals(bean.getIntValue(), 2);


        verify();
    }

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        ComponentResources resources = newComponentResources(bean);
        Location l = mockLocation();


        replay();


        Binding binding = factory.newBinding("test binding", resources, null, "readOnly", l);


        assertEquals(binding.get(), "ReadOnly");


        try
        {
            binding.set("fail");
            unreachable();
        }
        catch (TapestryException ex)
        {
            assertEquals(ex.getMessage(),

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        ComponentResources resources = newComponentResources(bean);
        Location l = mockLocation();


        replay();


        Binding binding = factory.newBinding("test binding", resources, null, "writeOnly", l);


        binding.set("updated");


        assertEquals(bean.writeOnly, "updated");


        try
        {
            assertEquals(binding.get(), "ReadOnly");
            unreachable();
        }
        catch (TapestryException ex)
        {
            assertEquals(ex.getMessage(),

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        train_getComponent(resources, component);
        train_getCompleteId(resources, "Does.not.matter");


        replay();


        Binding binding = factory.newBinding(description, resources, null, expression, l);


        assertEquals(binding.get(), expected);


        // All of these are invariatns, even though they are generated from the PropertyConduit.


        assertTrue(binding.isInvariant());


        verify();
    }

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                Location location = token.getLocation();


                BlockImpl block = new BlockImpl(location, interner.format("Parameter %s of %s",
                        parameterName, element.getCompleteId()));


                Binding binding = new LiteralBinding(location, "block parameter " + parameterName, block);


                EmbeddedComponentAssembler embeddedAssembler = pageAssembly.embeddedAssembler.peek();


                ParameterBinder binder = embeddedAssembler.createParameterBinder(parameterName);

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        for (String name : informals.keySet())
        {
            if (model.getParameterModel(name) != null)
                continue;


            Binding binding = informals.get(name);


            embedded.bindParameter(name, binding);
        }
    }

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                        .getComponentResources();


                ComponentPageElement embeddedElement = pageAssembly.createdElement.peek();
                InternalComponentResources embeddedResources = embeddedElement.getComponentResources();


                Binding binding = elementFactory.newBinding(parameterName, containerResources, embeddedResources,
                        defaultBindingPrefix, parameterValue, location);


                binder.bind(embeddedElement, binding);
            }
        }

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                                           String parameterName, String containerParameterName)
    {
        // TODO: This assumes that the two parameters are both on the core component and not on
        // a mixin. I think this could be improved with more static analysis.


        Binding containerBinding = container.getBinding(containerParameterName);


        if (containerBinding == null)
            return;


        // This helps with debugging, and re-orients any thrown exceptions

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            if (endx < 0) throw new TapestryException(ServicesMessages
                    .unclosedAttributeExpression(expression), location, null);


            String expansion = expression.substring(expansionx + 2, endx);


            final Binding binding = bindingSource.newBinding("attribute expansion", resources, resources,
                    BindingConstants.PROP, expansion, location);


            final StringProvider provider = new StringProvider()
            {
                public String provideString()
                {
                    try
                    {
                        Object raw = binding.get();


                        return typeCoercer.coerce(raw, String.class);
                    } catch (Exception ex)
                    {
                        throw new TapestryException(ex.getMessage(), location, ex);

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        };
    }


    public RenderCommand newExpansionElement(ComponentResources componentResources, ExpansionToken token)
    {
        Binding binding = bindingSource.newBinding("expansion", componentResources, componentResources,
                BindingConstants.PROP, token.getExpression(), token.getLocation());


        return new ExpansionPageElement(binding, typeCoercer);
    }

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