/
curd.go
187 lines (164 loc) · 6.78 KB
/
curd.go
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package gomongo
import (
"context"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"reflect"
)
func (app *App) Database(database string) *App {
app.Dbname = database
return app
}
func (app *App) Collection(collection string) *App {
app.collection = collection
return app
}
func (app *App) Model(value interface{}) *App {
// https://studygolang.com/articles/896
val := reflect.ValueOf(value)
if methodValue := val.MethodByName("Database"); methodValue.IsValid() {
app.Dbname = methodValue.Call(nil)[0].String()
}
if methodValue := val.MethodByName("TableName"); methodValue.IsValid() {
app.collection = methodValue.Call(nil)[0].String()
}
return app
}
func (app *App) Session() (session mongo.Session, err error) {
session, err = app.Db.StartSession()
return
}
// InsertOne 插入单个文档
func (app *App) InsertOne(value interface{}) (result *mongo.InsertOneResult, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
result, err = collection.InsertOne(context.TODO(), value)
return result, err
}
// InsertMany 插入多个文档
func (app *App) InsertMany(values []interface{}) (result *mongo.InsertManyResult, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
result, err = collection.InsertMany(context.TODO(), values)
return result, err
}
// Delete 删除文档
func (app *App) Delete(filter interface{}) (int64, error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
count, err := collection.DeleteOne(context.TODO(), filter, nil)
return count.DeletedCount, err
}
// DeleteMany 删除多个文档
func (app *App) DeleteMany(key string, value interface{}) (int64, error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
filter := bson.D{{key, value}}
count, err := collection.DeleteMany(context.TODO(), filter)
return count.DeletedCount, err
}
// UpdateOne 更新单个文档
// 修改字段的值($set)
// 字段增加值 inc($inc)
// 从数组中增加一个元素 push($push)
// 从数组中删除一个元素 pull($pull)
func (app *App) UpdateOne(filter, update interface{}) (int64, error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
result, err := collection.UpdateOne(context.TODO(), filter, update)
return result.UpsertedCount, err
}
// UpdateMany 更新多个文档
// 修改字段的值($set)
// 字段增加值 inc($inc)
// 从数组中增加一个元素 push($push)
// 从数组中删除一个元素 pull($pull)
func (app *App) UpdateMany(filter, update interface{}) (int64, error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
result, err := collection.UpdateMany(context.TODO(), filter, update)
return result.UpsertedCount, err
}
// Find 查询
func (app *App) Find(filter interface{}, opts ...*options.FindOptions) (result *mongo.Cursor, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
result, err = collection.Find(context.TODO(), filter, opts...)
return result, err
}
// FindOne 查询单个文档
func (app *App) FindOne(filter interface{}) (result *mongo.SingleResult) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
result = collection.FindOne(context.TODO(), filter)
return result
}
// FindMany 查询多个文档
func (app *App) FindMany(filter interface{}) (result *mongo.Cursor, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
result, err = collection.Find(context.TODO(), filter)
return result, err
}
// FindManyByFilters 多条件查询
func (app *App) FindManyByFilters(filter interface{}) (result *mongo.Cursor, err error) {
collection, err := app.Db.Database(app.Dbname).Collection(app.collection).Clone()
result, err = collection.Find(context.TODO(), bson.M{"$and": filter})
return result, err
}
// FindManyByFiltersSort 多条件查询支持排序
func (app *App) FindManyByFiltersSort(filter interface{}, Sort interface{}) (result *mongo.Cursor, err error) {
collection, err := app.Db.Database(app.Dbname).Collection(app.collection).Clone()
findOptions := options.Find()
findOptions.SetSort(Sort)
result, err = collection.Find(context.TODO(), filter, findOptions)
return result, err
}
// FindCollection 查询集合文档
func (app *App) FindCollection(Limit int64) (result *mongo.Cursor, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
findOptions := options.Find()
findOptions.SetLimit(Limit)
result, err = collection.Find(context.TODO(), bson.D{{}}, findOptions)
return result, err
}
// FindCollectionSort 查询集合文档支持排序
func (app *App) FindCollectionSort(Sort interface{}, Limit int64) (result *mongo.Cursor, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
findOptions := options.Find()
findOptions.SetSort(Sort)
findOptions.SetLimit(Limit)
result, err = collection.Find(context.TODO(), bson.D{{}}, findOptions)
return result, err
}
// FindManyCollectionSort 查询集合文档支持排序支持条件
func (app *App) FindManyCollectionSort(filter interface{}, Sort interface{}) (result *mongo.Cursor, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
findOptions := options.Find()
findOptions.SetSort(Sort)
result, err = collection.Find(context.TODO(), filter, findOptions)
return result, err
}
// CollectionCount 查询集合里有多少数据
func (app *App) CollectionCount() (name string, size int64) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
name = collection.Name()
size, _ = collection.EstimatedDocumentCount(context.TODO())
return name, size
}
// CollectionDocuments 按选项查询集合
// Skip 跳过
// Limit 读取数量
// sort 1 ,-1 . 1 为升序 , -1 为降序
func (app *App) CollectionDocuments(Skip, Limit int64, sort int, key string, value interface{}) (result *mongo.Cursor, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
SORT := bson.D{{"_id", sort}}
filter := bson.D{{key, value}}
findOptions := options.Find().SetSort(SORT).SetLimit(Limit).SetSkip(Skip)
result, err = collection.Find(context.Background(), filter, findOptions)
return result, err
}
// AggregateByFiltersSort 统计分析
func (app *App) AggregateByFiltersSort(pipeline interface{}, opts ...*options.AggregateOptions) (result *mongo.Cursor, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
result, err = collection.Aggregate(context.TODO(), pipeline, opts...)
return result, err
}
// CountDocumentsByFilters 统计数量
func (app *App) CountDocumentsByFilters(filter interface{}) (count int64, err error) {
collection := app.Db.Database(app.Dbname).Collection(app.collection)
count, err = collection.CountDocuments(context.TODO(), filter)
return count, err
}