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helper.go
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helper.go
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package dataloader
import (
"fmt"
"github.com/graph-gophers/dataloader"
"github.com/pkg/errors"
"reflect"
)
func sortKeys(keys dataloader.Keys) ([]string, map[string]int) {
var ids []string
// create a map for remembering the order of keys passed in
keyOrder := make(map[string]int, len(keys))
for ix, key := range keys {
ids = append(ids, key.String())
keyOrder[key.String()] = ix
}
return ids, keyOrder
}
func assertEntitiesType(results []*dataloader.Result, expectedType reflect.Type) error {
for _, res := range results {
if reflect.TypeOf(res.Data) != expectedType {
return errors.New(fmt.Sprintf("Not expected type: %v", reflect.TypeOf(res.Data)))
}
}
return nil
}
func assertEntitiesPtrType(results []*dataloader.Result, expectedType reflect.Type, allowNils bool) error {
for _, res := range results {
if res.Data == nil && allowNils {
continue
} else if res.Data == nil && !allowNils {
return errors.New("Not expected nil")
}
value := reflect.ValueOf(res.Data)
if value.Kind() != reflect.Ptr {
return errors.New(fmt.Sprintf("Not expected type: %v", value.Kind()))
}
elemType := value.Elem().Type()
if elemType != expectedType {
return errors.New(fmt.Sprintf("Not expected type: %v", elemType))
}
}
return nil
}