/// <summary>
/// Updates the field resolver used by this graph field.
/// </summary>
/// <param name="newResolver">The new resolver this field should use.</param>
/// <param name="mode">The new resolution mode used by the runtime to invoke the resolver.</param>
public void UpdateResolver(IGraphFieldResolver newResolver, FieldResolutionMode mode)
{
this.Resolver = newResolver;
this.Mode = mode;
var unrwrappedType = GraphValidation.EliminateWrappersFromCoreType(this.Resolver?.ObjectType);
this.IsLeaf = this.Resolver?.ObjectType != null && GraphQLProviders.ScalarProvider.IsLeaf(unrwrappedType);
}
/// <summary>
/// Initializes a new instance of the <see cref="PropertyGraphField" /> class.
/// </summary>
/// <param name="fieldName">Name of the field in the public graph.</param>
/// <param name="typeExpression">The type expression declaring what type of data this field returns.</param>
/// <param name="route">The route to this field in the graph.</param>
/// <param name="propertyType">The property metadata.</param>
/// <param name="propertyDeclaredName">The name of the property as it was declared on the <see cref="Type"/> (its internal name).</param>
/// <param name="mode">The mode in which the runtime will process this field.</param>
/// <param name="resolver">The resolver to be invoked to produce data when this field is called.</param>
/// <param name="securityPolicies">The security policies that apply to this field.</param>
public PropertyGraphField(
string fieldName,
GraphTypeExpression typeExpression,
GraphFieldPath route,
Type propertyType,
string propertyDeclaredName,
FieldResolutionMode mode = FieldResolutionMode.PerSourceItem,
IGraphFieldResolver resolver = null,
IEnumerable <FieldSecurityGroup> securityPolicies = null)
: base(fieldName, typeExpression, route, mode, resolver, securityPolicies)
{
this.ObjectType = propertyType;
this.InternalName = propertyDeclaredName;
}
/// <summary>
/// Initializes a new instance of the <see cref="MethodGraphField" /> class.
/// </summary>
/// <param name="fieldName">Name of the field in the graph.</param>
/// <param name="typeExpression">The meta data describing the type of data this field returns.</param>
/// <param name="route">The formal route to this field in the object graph.</param>
/// <param name="mode">The mode in which the runtime will process this field.</param>
/// <param name="resolver">The resolver to be invoked to produce data when this field is called.</param>
/// <param name="securityPolicies">The security policies that apply to this field.</param>
public MethodGraphField(
string fieldName,
GraphTypeExpression typeExpression,
GraphFieldPath route,
FieldResolutionMode mode = FieldResolutionMode.PerSourceItem,
IGraphFieldResolver resolver = null,
IEnumerable <FieldSecurityGroup> securityPolicies = null)
{
this.Name = fieldName;
this.TypeExpression = Validation.ThrowIfNullOrReturn(typeExpression, nameof(typeExpression));
this.Route = Validation.ThrowIfNullOrReturn(route, nameof(route));
this.Arguments = new GraphFieldArgumentCollection();
this.SecurityGroups = securityPolicies ?? Enumerable.Empty <FieldSecurityGroup>();
this.UpdateResolver(resolver, mode);
}
/// <summary>
/// Updates the field resolver used by this graph field.
/// </summary>
/// <param name="newResolver">The new resolver this field should use.</param>
/// <param name="mode">The new resolution mode used by the runtime to invoke the resolver.</param>
public void UpdateResolver(IGraphFieldResolver newResolver, FieldResolutionMode mode)
{
throw new InvalidOperationException($"The resolver for '{typeof(VirtualGraphField).FriendlyName()}' cannot be altered.");
}