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how to use factory and strategy pattern with structure map
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// plugin definitions | |
interface IPlugin | |
{ | |
string ClientID; | |
void SomeClientSpecificFunction(); | |
} | |
class DefaultPlugin : IPlugin | |
{ | |
IDefaultPlugin() | |
{ | |
ClientID = ""; | |
} | |
void SomeClientSpecificFunction() | |
{ | |
} | |
} | |
class ConcretePlugin : IPlugin | |
{ | |
ConcretePlugin() | |
{ | |
ClientID = "ACME"; | |
} | |
void SomeClientSpecificFunction() | |
{ | |
// client specific code | |
} | |
} | |
// factory definitions | |
interface IPluginFactory | |
{ | |
IPlugin GetPlugin(string clientId); | |
} | |
public class PluginFactory : IPluginFactory | |
private IEnumerable<IPlugin> plugins; | |
ctor(IEnumerable<IPlugin> plugins) | |
{ | |
this.plugins = plugins; | |
} | |
public IPlugin GetPlugin(string clientId) | |
{ | |
var result = | |
this.plugins.where(p => p.ClientId == clientId); | |
if (result == null) | |
return new DefaultPlugin(); | |
} | |
} | |
// dependent code | |
public class TestHarness | |
{ | |
IPluginFactory pluginFactory; | |
public TestHarness(IPluginFactory pluginFactory) | |
{ | |
this.pluginFactory = pluginFactory; | |
} | |
public void Execute(string client = "") | |
{ | |
var plugin = PluginFactory.GetPlugin(client); | |
plugin.SomeClientSpecificFunction(); | |
} | |
} | |
Scan(s => | |
{ | |
s.TheCallingAssembly(); | |
s.AddAllTypesOf<IPlugin>(); | |
s.AddAllTypesOf<IPluginFactory>(); | |
} |
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