public Func <TCommand, string> Compile <TCommand>(ICacheKeyHash cacheKeyHash)
{
Func <TCommand, string> compiledFunc = null;
var commandParameter = Expression.Parameter(typeof(TCommand));
MethodInfo toStringMethodInfo = typeof(object).GetTypeInfo().GetDeclaredMethod("ToString");
MethodInfo gethashcodeMethodInfo = typeof(ICacheKeyHash).GetTypeInfo().GetDeclaredMethod("GetHash");
PropertyInfo[] properties = typeof(TCommand).GetTypeInfo().DeclaredProperties.OrderBy(x => x.Name).ToArray();
Expression[] concatParameters = new Expression[properties.Length * 3 + 1];
concatParameters[0] = Expression.Constant(typeof(TCommand).Name);
for (int propertyIndex = 0; propertyIndex < properties.Length; propertyIndex++)
{
concatParameters[propertyIndex * 3 + 1] = Expression.Constant("|");
concatParameters[propertyIndex * 3 + 2] = Expression.Constant(properties[propertyIndex].Name + ":");
concatParameters[propertyIndex * 3 + 3] = Expression.Call(Expression.Property(commandParameter, properties[propertyIndex]), toStringMethodInfo);
}
MethodInfo concatMethodInfo = typeof(string).GetTypeInfo().GetDeclaredMethods("Concat").Single(x => x.GetParameters().Length == 1 && x.GetParameters()[0].ParameterType == typeof(IEnumerable <string>));
Expression concatCall = Expression.Call(null, concatMethodInfo, Expression.NewArrayInit(typeof(string), concatParameters));
Expression gethashcodeCall = Expression.Call(Expression.Constant(cacheKeyHash), gethashcodeMethodInfo, concatCall);
var lambda = Expression.Lambda <Func <TCommand, string> >(gethashcodeCall, commandParameter);
compiledFunc = lambda.Compile();
return(compiledFunc);
}
public PropertyCacheKeyProvider(IPropertyCacheKeyProviderCompiler compiler, ICacheKeyHash cacheKeyHash)
{
_compiler = compiler;
_cacheKeyHash = cacheKeyHash;
}
