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index.go
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index.go
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package mongodbr
import (
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
)
// index model
type EntityIndexDefine struct {
FieldList []IndexFieldDefine
}
func NewEntityIndexDefine() *EntityIndexDefine {
return &EntityIndexDefine{
FieldList: make([]IndexFieldDefine, 0),
}
}
func (d *EntityIndexDefine) AddField(fieldName string, isAsc bool) *EntityIndexDefine {
d.FieldList = append(d.FieldList, IndexFieldDefine{
FieldName: fieldName,
IsAsc: isAsc,
})
return d
}
type IndexFieldDefine struct {
FieldName string
IsAsc bool
}
func (d *EntityIndexDefine) ToIndexModel() *mongo.IndexModel {
if len(d.FieldList) <= 0 {
return nil
}
keys := bson.D{}
for _, eachFieldDefine := range d.FieldList {
keys = append(keys, bson.E{
Key: eachFieldDefine.FieldName,
Value: isAscToIndexValue(eachFieldDefine.IsAsc),
})
}
indexModel := &mongo.IndexModel{
Keys: keys,
}
return indexModel
}
func isAscToIndexValue(isAsc bool) int32 {
if isAsc {
return 1
}
return -1
}