/// <summary>
/// Instantiates the graph field according to the data provided.
/// </summary>
/// <param name="formatter">The formatter.</param>
/// <param name="template">The template.</param>
/// <param name="securityGroups">The security groups.</param>
/// <returns>MethodGraphField.</returns>
protected virtual MethodGraphField InstantiateField(
GraphNameFormatter formatter,
IGraphTypeFieldTemplate template,
List <FieldSecurityGroup> securityGroups)
{
switch (template.FieldSource)
{
case GraphFieldTemplateSource.Method:
case GraphFieldTemplateSource.Action:
return(new MethodGraphField(
formatter.FormatFieldName(template.Name),
template.TypeExpression.CloneTo(formatter.FormatGraphTypeName(template.TypeExpression.TypeName)),
template.Route,
template.Mode,
template.CreateResolver(),
securityGroups));
case GraphFieldTemplateSource.Property:
return(new PropertyGraphField(
formatter.FormatFieldName(template.Name),
template.TypeExpression.CloneTo(formatter.FormatGraphTypeName(template.TypeExpression.TypeName)),
template.Route,
template.DeclaredReturnType,
template.DeclaredName,
template.Mode,
template.CreateResolver(),
securityGroups));
default:
throw new ArgumentOutOfRangeException($"Template field source of {template.FieldSource.ToString()} is not supported by {this.GetType().FriendlyName()}.");
}
}
/// <summary>
/// Instantiates the graph field according to the data provided.
/// </summary>
/// <param name="formatter">The formatter.</param>
/// <param name="template">The template.</param>
/// <param name="securityGroups">The security groups.</param>
/// <returns>MethodGraphField.</returns>
protected override MethodGraphField InstantiateField(
GraphNameFormatter formatter,
IGraphTypeFieldTemplate template,
List <FieldSecurityGroup> securityGroups)
{
var subTemplate = template as ControllerSubscriptionActionGraphFieldTemplate;
if (subTemplate != null &&
subTemplate.FieldSource == GraphFieldTemplateSource.Action &&
subTemplate.Route.RootCollection == GraphCollection.Subscription)
{
return(new SubscriptionMethodGraphField(
formatter.FormatFieldName(template.Name),
template.TypeExpression.CloneTo(formatter.FormatGraphTypeName(template.TypeExpression.TypeName)),
template.Route,
template.Mode,
template.CreateResolver(),
securityGroups,
subTemplate.EventName));
}
return(base.InstantiateField(formatter, template, securityGroups));
}
/// <summary>
/// Creates a single graph field from the provided template using hte rules of this maker and the contained schema.
/// </summary>
/// <param name="template">The template to generate a field from.</param>
/// <returns>IGraphField.</returns>
public GraphFieldCreationResult CreateField(IGraphTypeFieldTemplate template)
{
var formatter = _schema.Configuration.DeclarationOptions.GraphNamingFormatter;
var result = new GraphFieldCreationResult();
// if the owner of this field declared top level objects append them to the
// field for evaluation
var securityGroups = new List <FieldSecurityGroup>();
if (template.Parent?.SecurityPolicies?.Count > 0)
{
securityGroups.Add(template.Parent.SecurityPolicies);
}
if (template.SecurityPolicies?.Count > 0)
{
securityGroups.Add(template.SecurityPolicies);
}
MethodGraphField field = null;
switch (template.FieldSource)
{
case GraphFieldTemplateSource.Method:
case GraphFieldTemplateSource.Action:
field = new MethodGraphField(
formatter.FormatFieldName(template.Name),
template.TypeExpression.CloneTo(formatter.FormatGraphTypeName(template.TypeExpression.TypeName)),
template.Route,
template.Mode,
template.CreateResolver(),
securityGroups);
break;
case GraphFieldTemplateSource.Property:
field = new PropertyGraphField(
formatter.FormatFieldName(template.Name),
template.TypeExpression.CloneTo(formatter.FormatGraphTypeName(template.TypeExpression.TypeName)),
template.Route,
template.DeclaredReturnType,
template.DeclaredName,
template.Mode,
template.CreateResolver(),
securityGroups);
break;
}
field.Description = template.Description;
field.IsDeprecated = template.IsDeprecated;
field.DeprecationReason = template.DeprecationReason;
field.Complexity = template.Complexity;
field.FieldSource = template.FieldSource;
if (template.Arguments != null)
{
var argumentMaker = new GraphArgumentMaker(_schema);
foreach (var argTemplate in template.Arguments)
{
var argumentResult = argumentMaker.CreateArgument(argTemplate);
field.Arguments.AddArgument(argumentResult.Argument);
result.MergeDependents(argumentResult);
}
}
result.AddDependentRange(template.RetrieveRequiredTypes());
if (template.UnionProxy != null)
{
var unionMaker = new UnionGraphTypeMaker(_schema);
result.AddDependent(unionMaker.CreateGraphType(template.UnionProxy, template.Kind));
}
result.Field = field;
return(result);
}