/// <summary>
/// Parses the primary metadata about the method.
/// </summary>
public void Parse()
{
DirectiveLifeCycle lifeCycle;
switch (this.Method.Name)
{
case Constants.ReservedNames.DIRECTIVE_BEFORE_RESOLUTION_METHOD_NAME:
lifeCycle = DirectiveLifeCycle.BeforeResolution;
break;
case Constants.ReservedNames.DIRECTIVE_AFTER_RESOLUTION_METHOD_NAME:
lifeCycle = DirectiveLifeCycle.AfterResolution;
break;
default:
return;
}
this.IsValidDirectiveMethod = (this.Method.ReturnType == typeof(IGraphActionResult) || this.Method.ReturnType == typeof(Task <IGraphActionResult>)) &&
!this.Method.IsGenericMethod;
this.Description = this.Method.SingleAttributeOrDefault <DescriptionAttribute>()?.Description;
this.DeclaredType = this.Method.ReturnType;
this.IsAsyncField = Validation.IsCastable <Task>(this.Method.ReturnType);
// is the method asyncronous? if so ensure that a Task<T> is returned
// and not an empty task
if (this.IsAsyncField && this.Method.ReturnType.IsGenericType)
{
// for any ssync field attempt to pull out the T in Task<T>
var genericArgs = this.Method.ReturnType.GetGenericArguments();
if (genericArgs.Any())
{
this.DeclaredType = genericArgs[0];
}
}
this.ObjectType = GraphValidation.EliminateWrappersFromCoreType(this.DeclaredType);
this.LifeCycle = lifeCycle;
this.Route = this.GenerateRoute();
this.TypeExpression = new GraphTypeExpression(this.ObjectType.FriendlyName());
// parse all input parameters into the method
foreach (var parameter in this.Method.GetParameters())
{
var argTemplate = new GraphFieldArgumentTemplate(this, parameter);
argTemplate.Parse();
_arguments.Add(argTemplate);
}
this.MethodSignature = this.GenerateMethodSignatureString();
this.ExpectedReturnType = GraphValidation.EliminateWrappersFromCoreType(
this.DeclaredType,
false,
true,
false);
}
/// <summary>
/// When overridden in a child class this method builds out the template according to its own individual requirements.
/// </summary>
protected override void ParseTemplateDefinition()
{
base.ParseTemplateDefinition();
// parse all input parameters into it
foreach (var parameter in this.Method.GetParameters())
{
var argTemplate = new GraphFieldArgumentTemplate(this, parameter);
argTemplate.Parse();
_arguments.Add(argTemplate);
}
}
