private static ActionConstraintContext CreateActionConstraintContext(HttpMethodConstraint constraint)
{
var context = new ActionConstraintContext();
var actionSelectorCandidate = new ActionSelectorCandidate(new ActionDescriptor(), new List<IActionConstraint> { constraint });
context.Candidates = new List<ActionSelectorCandidate> { actionSelectorCandidate };
context.CurrentCandidate = context.Candidates[0];
return context;
}
private List <OverloadedParameter> GetOverloadableParameters(ActionSelectorCandidate candidate)
{
if (candidate.Action.Parameters == null)
{
return(null);
}
var isOverloaded = false;
foreach (var constraint in candidate.Constraints)
{
if (constraint is OverloadActionConstraint)
{
isOverloaded = true;
}
}
if (!isOverloaded)
{
return(null);
}
var parameters = new List <OverloadedParameter>();
foreach (var parameter in candidate.Action.Parameters)
{
// We only consider parameters that are bound from the URL.
if ((parameter.BinderMetadata is IRouteDataValueProviderMetadata ||
parameter.BinderMetadata is IQueryValueProviderMetadata) &&
ValueProviderResult.CanConvertFromString(parameter.ParameterType))
{
var optionalMetadata = parameter.BinderMetadata as IOptionalBinderMetadata;
if (optionalMetadata == null || optionalMetadata.IsOptional)
{
// Optional parameters are ignored in overloading. If a parameter doesn't specify that it's
// required then treat it as optional (MVC default). WebAPI parameters will all by-default
// specify themselves as required unless they have a default value.
continue;
}
var nameProvider = parameter.BinderMetadata as IModelNameProvider;
var prefix = nameProvider?.Name ?? parameter.Name;
parameters.Add(new OverloadedParameter()
{
ParameterDescriptor = parameter,
Prefix = prefix,
});
}
}
return(parameters);
}
private List <OverloadedParameter> GetOverloadableParameters(ActionSelectorCandidate candidate)
{
if (candidate.Action.Parameters == null)
{
return(null);
}
var isOverloaded = false;
foreach (var constraint in candidate.Constraints)
{
if (constraint is OverloadActionConstraint)
{
isOverloaded = true;
}
}
if (!isOverloaded)
{
return(null);
}
var parameters = new List <OverloadedParameter>();
foreach (var parameter in candidate.Action.Parameters)
{
// We only consider parameters that are bound from the URL.
if ((parameter.BinderMetadata is IRouteDataValueProviderMetadata ||
parameter.BinderMetadata is IQueryValueProviderMetadata) &&
!parameter.IsOptional &&
ValueProviderResult.CanConvertFromString(parameter.ParameterType))
{
var nameProvider = parameter.BinderMetadata as IModelNameProvider;
var prefix = nameProvider?.Name ?? parameter.Name;
parameters.Add(new OverloadedParameter()
{
ParameterDescriptor = parameter,
Prefix = prefix,
});
}
}
return(parameters);
}
private List<OverloadedParameter> GetOverloadableParameters(ActionSelectorCandidate candidate)
{
if (candidate.Action.Parameters == null)
{
return null;
}
var isOverloaded = false;
foreach (var constraint in candidate.Constraints)
{
if (constraint is OverloadActionConstraint)
{
isOverloaded = true;
}
}
if (!isOverloaded)
{
return null;
}
var parameters = new List<OverloadedParameter>();
object optionalParametersObject;
candidate.Action.Properties.TryGetValue("OptionalParameters", out optionalParametersObject);
var optionalParameters = (HashSet<string>)optionalParametersObject;
foreach (var parameter in candidate.Action.Parameters)
{
// We only consider parameters that are marked as bound from the URL.
var source = parameter.BindingInfo?.BindingSource;
if (source == null)
{
continue;
}
if ((source.CanAcceptDataFrom(BindingSource.Path) ||
source.CanAcceptDataFrom(BindingSource.Query)) &&
ValueProviderResult.CanConvertFromString(parameter.ParameterType))
{
if (optionalParameters != null)
{
var isOptional = optionalParameters.Contains(parameter.Name);
if (isOptional)
{
// Optional parameters are ignored in overloading. If a parameter doesn't specify that it's
// required then treat it as optional (MVC default). WebAPI parameters will all by-default
// specify themselves as required unless they have a default value.
continue;
}
}
var prefix = parameter.BindingInfo?.BinderModelName ?? parameter.Name;
parameters.Add(new OverloadedParameter()
{
ParameterDescriptor = parameter,
Prefix = prefix,
});
}
}
return parameters;
}
