Setting Up AutoMapper For Use From A Container
Dusty Candland |
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I like getting all my service from the container and I like using AutoMapper. So I added the AutoMapper to the container, a WindsorContainer in this case.
The main interface is IMappingEngine, which is implemented by MappingEngine which also implements IMappingEngineRunner. This contains a getter to an IConfiguration interface which is also an IConfigurationExpression. So to replace Mapper you need an instance of IMappingEngine and then you can configure the engine as follows:
public CustomMapper(IMappingEngine engine)
{
engine = engine;
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    <span style="color: blue">var</span> runner = </em>engine <span style="color: blue">as</span> <span style="color: #2b91af">IMappingEngineRunner</span>;
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    <span style="color: blue">if</span> (runner == <span style="color: blue">null</span>)
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        <span style="color: blue">return</span>;
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    <span style="color: blue">var</span> configuration = runner.Configuration <span style="color: blue">as</span> <span style="color: #2b91af">IConfigurationExpression</span>;
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    <span style="color: blue">if</span> (configuration == <span style="color: blue">null</span>)
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        <span style="color: blue">return</span>;
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    configuration.CreateMap<<span style="color: #2b91af">IApplication</span>, B.<span style="color: #2b91af">Application</span>>();
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}
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Next setting up the container, the MappingEngine needs an IConfiguration, the Configuration needs some IObjectMapper instances.
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<span style="color: blue">private</span> <span style="color: blue">static</span> <span style="color: blue">void</span> RegisterMappingEngine()
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{
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    <em>container.Register(<span style="color: #2b91af">AllTypes</span>.Of<<span style="color: #2b91af">IObjectMapper</span>>()</p>
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                            .FromAssembly(<span style="color: blue">typeof</span> (<span style="color: #2b91af">IObjectMapper</span>).Assembly)
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                            .Configure(configurer => configurer.Named(configurer.ServiceType.Name))
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                            .Configure(configurer => configurer.LifeStyle.Transient));
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    </em>container.Register(<span style="color: #2b91af">Component</span>.For<<span style="color: #2b91af">IConfiguration</span>>().ImplementedBy<<span style="color: #2b91af">Configuration</span>>()
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                            .LifeStyle.Transient.ServiceOverrides(
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                            <span style="color: #2b91af">ServiceOverride</span>.ForKey(<span style="color: #a31515">"mappers"</span>).Eq(
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                                <span style="color: #a31515">"CustomTypeMapMapper"</span>,
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                                <span style="color: #a31515">"TypeMapMapper"</span>,
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                                <span style="color: #a31515">"NewOrDefaultMapper"</span>,
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                                <span style="color: #a31515">"StringMapper"</span>,
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                                <span style="color: #a31515">"EnumMapper"</span>,
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                                <span style="color: #a31515">"ArrayMapper"</span>,
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                                <span style="color: #a31515">"EnumerableMapper"</span>,
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                                <span style="color: #a31515">"NullableMapper"</span>,
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                                <span style="color: #a31515">"AssignableMapper"</span>)
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                            ));
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    _container.Register(<span style="color: #2b91af">Component</span>.For<<span style="color: #2b91af">IMappingEngine</span>>().ImplementedBy<<span style="color: #2b91af">MappingEngine</span>>()
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                            .LifeStyle.Transient);
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}
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<p>
These are all set as Transient because each CustomMapper can be Singleton and I don’t want the mappings to over lap between the CustomMappers.
</p></p>
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