Golang ValidationErrors.AsError方法代码示例

// Validate tests whether the resource definition is consistent: action names are valid and each action is
// valid.
func (r *ResourceDefinition) Validate(version *APIVersionDefinition) *dslengine.ValidationErrors {
	verr := new(dslengine.ValidationErrors)
	if r.Name == "" {
		verr.Add(r, "Resource name cannot be empty")
	}
	r.validateActions(version, verr)
	if r.BaseParams != nil {
		r.validateBaseParams(verr)
	}
	if r.ParentName != "" {
		r.validateParent(verr)
	}
	for _, resp := range r.Responses {
		verr.Merge(resp.Validate())
	}
	if r.Params != nil {
		verr.Merge(r.Params.Validate("resource parameters", r))
	}
	if !r.SupportsNoVersion() {
		if err := dslengine.CanUse(r, Design); err != nil {
			verr.Add(r, "Invalid API version in list")
		}
	}
	return verr.AsError()
}

// Validate checks that the user type definition is consistent: it has a name and the attribute
// backing the type is valid.
func (u *UserTypeDefinition) Validate(ctx string, parent dslengine.Definition) *dslengine.ValidationErrors {
	verr := new(dslengine.ValidationErrors)
	if u.TypeName == "" {
		verr.Add(parent, "%s - %s", ctx, "User type must have a name")
	}
	verr.Merge(u.AttributeDefinition.Validate(ctx, u))
	return verr.AsError()
}

// Validate tests whether the RelationalField definition is consistent.
func (field *RelationalFieldDefinition) Validate() *dslengine.ValidationErrors {
	fmt.Println("Validing Field")
	verr := new(dslengine.ValidationErrors)

	if field.Parent == nil {
		verr.Add(field, "missing relational model parent")
	}
	if field.Name == "" {
		verr.Add(field, "field name not defined")
	}
	return verr.AsError()
}

// ValidateParams checks the action parameters (make sure they have names, members and types).
func (a *ActionDefinition) ValidateParams() *dslengine.ValidationErrors {
	verr := new(dslengine.ValidationErrors)
	if a.Params == nil {
		return nil
	}
	params, ok := a.Params.Type.(Object)
	if !ok {
		verr.Add(a, `"Params" field of action is not an object`)
	}
	var wcs []string
	for _, r := range a.Routes {
		rwcs := ExtractWildcards(r.FullPath())
		for _, rwc := range rwcs {
			found := false
			for _, wc := range wcs {
				if rwc == wc {
					found = true
					break
				}
			}
			if !found {
				wcs = append(wcs, rwc)
			}
		}
	}
	for n, p := range params {
		if n == "" {
			verr.Add(a, "action has parameter with no name")
		} else if p == nil {
			verr.Add(a, "definition of parameter %s cannot be nil", n)
		} else if p.Type == nil {
			verr.Add(a, "type of parameter %s cannot be nil", n)
		}
		if p.Type.Kind() == ObjectKind {
			verr.Add(a, `parameter %s cannot be an object, only action payloads may be of type object`, n)
		} else if p.Type.Kind() == HashKind {
			verr.Add(a, `parameter %s cannot be a hash, only action payloads may be of type hash`, n)
		}
		ctx := fmt.Sprintf("parameter %s", n)
		verr.Merge(p.Validate(ctx, a))
	}
	for _, resp := range a.Responses {
		verr.Merge(resp.Validate())
	}
	return verr.AsError()
}

// Validate tests whether the attribute definition is consistent: required fields exist.
// Since attributes are unaware of their context, additional context information can be provided
// to be used in error messages.
// The parent definition context is automatically added to error messages.
func (a *AttributeDefinition) Validate(ctx string, parent dslengine.Definition) *dslengine.ValidationErrors {
	if validated[a] {
		return nil
	}
	validated[a] = true
	verr := new(dslengine.ValidationErrors)
	if a.Type == nil {
		verr.Add(parent, "attribute type is nil")
		return verr
	}
	if ctx != "" {
		ctx += " - "
	}
	o := a.Type.ToObject()
	if o != nil {
		for _, n := range a.AllRequired() {
			found := false
			for an := range o {
				if n == an {
					found = true
					break
				}
			}
			if !found {
				verr.Add(parent, `%srequired field "%s" does not exist`, ctx, n)
			}
		}
		for n, att := range o {
			ctx = fmt.Sprintf("field %s", n)
			verr.Merge(att.Validate(ctx, a))
		}
	} else {
		if a.Type.IsArray() {
			elemType := a.Type.ToArray().ElemType
			verr.Merge(elemType.Validate(ctx, a))
		}
	}

	return verr.AsError()
}