124 lines
2.8 KiB
Go
124 lines
2.8 KiB
Go
package mongodb
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import (
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. "code.hoteas.com/golang/hotime/common"
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"context"
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"fmt"
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"go.mongodb.org/mongo-driver/mongo"
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"go.mongodb.org/mongo-driver/mongo/options"
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)
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type mongoDb struct {
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Client *mongo.Client
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Ctx context.Context
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DataBase *mongo.Database
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Connect *mongo.Collection
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LastErr error
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}
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func Init(database, url string) (*mongoDb, error) {
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db := mongoDb{}
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clientOptions := options.Client().ApplyURI(url)
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db.Ctx = context.TODO()
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// Connect to MongoDB
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var err error
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db.Client, err = mongo.Connect(db.Ctx, clientOptions)
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if err != nil {
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return nil, err
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}
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// Check the connection
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err = db.Client.Ping(db.Ctx, nil)
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if err != nil {
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return nil, err
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}
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fmt.Println("Connected to MongoDB!")
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//databases, err := db.Client.ListDatabaseNames(db.Ctx, bson.M{})
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//if err != nil {
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// return nil, err
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//}
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//fmt.Println(databases)
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db.DataBase = db.Client.Database(database)
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return &db, nil
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}
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func (that *mongoDb) Insert(table string, data interface{}) string {
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collection := that.DataBase.Collection(table)
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re, err := collection.InsertOne(that.Ctx, data)
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if err != nil {
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that.LastErr = err
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return ""
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}
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return ObjToStr(re.InsertedID)
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}
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func (that *mongoDb) InsertMany(table string, data ...interface{}) Slice {
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collection := that.DataBase.Collection(table)
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re, err := collection.InsertMany(that.Ctx, data)
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if err != nil {
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that.LastErr = err
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return Slice{}
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}
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return ObjToSlice(re.InsertedIDs)
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}
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func (that *mongoDb) Get(table string, where Map) Map {
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results := []Map{}
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var cursor *mongo.Cursor
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var err error
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collection := that.DataBase.Collection(table)
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if cursor, err = collection.Find(that.Ctx, where, options.Find().SetSkip(0), options.Find().SetLimit(2)); err != nil {
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that.LastErr = err
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return nil
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}
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//延迟关闭游标
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defer func() {
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if err := cursor.Close(that.Ctx); err != nil {
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that.LastErr = err
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}
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}()
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//这里的结果遍历可以使用另外一种更方便的方式：
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if err = cursor.All(that.Ctx, &results); err != nil {
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that.LastErr = err
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return nil
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}
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if len(results) > 0 {
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return results[0]
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}
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return nil
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}
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func (that mongoDb) Select(table string, where Map, page, pageRow int64) []Map {
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page = (page - 1) * pageRow
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if page < 0 {
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page = 0
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}
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results := []Map{}
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var cursor *mongo.Cursor
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var err error
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collection := that.DataBase.Collection(table)
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if cursor, err = collection.Find(that.Ctx, where, options.Find().SetSkip(page), options.Find().SetLimit(pageRow)); err != nil {
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that.LastErr = err
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return results
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}
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//延迟关闭游标
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defer func() {
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if err := cursor.Close(that.Ctx); err != nil {
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that.LastErr = err
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}
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}()
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//这里的结果遍历可以使用另外一种更方便的方式：
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if err = cursor.All(that.Ctx, &results); err != nil {
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that.LastErr = err
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return results
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}
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return results
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}
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