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// Copyright (C) MongoDB, Inc. 2017-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package unified
import (
"sort"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/bson/bsontype"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
)
var (
emptyCoreDocument = bsoncore.NewDocumentBuilder().Build()
emptyDocument = bson.Raw(emptyCoreDocument)
emptyRawValue = bson.RawValue{}
)
func documentToRawValue(doc bson.Raw) bson.RawValue {
return bson.RawValue{
Type: bsontype.EmbeddedDocument,
Value: doc,
}
}
func removeFieldsFromDocument(doc bson.Raw, keys ...string) bson.Raw {
newDoc := bsoncore.NewDocumentBuilder()
elems, _ := doc.Elements()
keysMap := make(map[string]struct{})
for _, key := range keys {
keysMap[key] = struct{}{}
}
for _, elem := range elems {
if _, ok := keysMap[elem.Key()]; ok {
continue
}
val := elem.Value()
newDoc.AppendValue(elem.Key(), bsoncore.Value{Type: val.Type, Data: val.Value})
}
return bson.Raw(newDoc.Build())
}
func sortDocument(doc bson.Raw) bson.Raw {
elems, _ := doc.Elements()
keys := make([]string, 0, len(elems))
valuesMap := make(map[string]bson.RawValue)
for _, elem := range elems {
keys = append(keys, elem.Key())
valuesMap[elem.Key()] = elem.Value()
}
sort.Strings(keys)
sorted := bsoncore.NewDocumentBuilder()
for _, key := range keys {
val := valuesMap[key]
sorted.AppendValue(key, bsoncore.Value{Type: val.Type, Data: val.Value})
}
return bson.Raw(sorted.Build())
}
func lookupString(doc bson.Raw, key string) string {
return doc.Lookup(key).StringValue()
}
func lookupInteger(doc bson.Raw, key string) int64 {
return doc.Lookup(key).AsInt64()
}
func mapKeys(m map[string]interface{}) []string {
keys := make([]string, 0, len(m))
for k := range m {
keys = append(keys, k)
}
return keys
}
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