sqlx

package
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 Go to latest Published: Oct 27, 2023 License: Apache-2.0 Imports: 20 Imported by: 0

README

database/sql

项目简介

MySQL数据库驱动，进行封装加入了链路追踪和统计。

如果需要SQL级别的超时管理 可以在业务代码里面使用context.WithDeadline实现 推荐超时配置放到application.toml里面 方便热加载

依赖包

  1. Go-MySQL-Driver

Documentation

Index

Constants

View Source 
const (
	UNKNOWN = iota
	QUESTION
	DOLLAR
	NAMED
	AT
)

Bindvar types supported by Rebind, BindMap and BindStruct.

Variables

View Source 
var (
	//	// ErrStmtNil prepared stmt error
	//	ErrStmtNil = errors.New("sql: prepare failed and stmt nil")
	// ErrNoMaster is returned by Master when call master multiple times.
	ErrNoMaster = errors.New("sql: no master instance")
)
View Source 
var (
	ErrNotFound = sql.ErrNoRows
)
View Source 
var NameMapper = strings.ToLower

NameMapper is used to map column names to struct field names. By default, it uses strings.ToLower to lowercase struct field names. It can be set to whatever you want, but it is encouraged to be set before sqlx is used as name-to-field mappings are cached after first use on a type.

Functions

func BindDriver 

func BindDriver(driverName string, bindType int)

BindDriver sets the BindType for driverName to bindType.

func BindNamed 

func BindNamed(bindType int, query string, arg interface{}) (string, []interface{}, error)

BindNamed binds a struct or a map to a query with named parameters. DEPRECATED: use sqlx.Named` instead of this, it may be removed in future.

func BindType 

func BindType(driverName string) int

BindType returns the bindtype for a given database given a drivername.

func CheckExists 

func CheckExists(ctx context.Context, db *DB, table string, params map[string]interface{}) (bool, error)

CheckExists 检查是否存在

func In 

func In(query string, args ...interface{}) (string, []interface{}, error)

In expands slice values in args, returning the modified query string and a new arg list that can be executed by a database. The `query` should use the `?` bindVar. The return value uses the `?` bindVar.

func IsDuplicate 

func IsDuplicate(err error) bool

IsDuplicate Check if MySQL error is a Error Code: 1062. Duplicate entry ... for key ...

func IsMissingDb 

func IsMissingDb(err error) bool

IsMissingDb IsMissingDb

func Must 

func Must(sc StoreChannel) interface{}

func Named 

func Named(query string, arg interface{}) (string, []interface{}, error)

Named takes a query using named parameters and an argument and returns a new query with a list of args that can be executed by a database. The return value uses the `?` bindvar.

func Rebind 

func Rebind(bindType int, query string) string

Rebind a query from the default bindtype (QUESTION) to the target bindtype.

Types

type CommonDAO 

type CommonDAO struct {
	// contains filtered or unexported fields
}

func NewCommonDAO 

func NewCommonDAO(db *DB) *CommonDAO

func (*CommonDAO) CalcSize 

func (dao *CommonDAO) CalcSize(ctx context.Context, table string, params map[string]interface{}) int

func (*CommonDAO) CalcSizeByWhere 

func (dao *CommonDAO) CalcSizeByWhere(ctx context.Context, table, where string) int

func (*CommonDAO) CheckExists 

func (dao *CommonDAO) CheckExists(ctx context.Context, table string, params map[string]interface{}) bool

CheckExists 检查是否存在

func (*CommonDAO) DB 

func (dao *CommonDAO) DB() *DB

type Config 

type Config struct {
	DSN         string   // write data source name.
	ReadDSN     []string `json:",optional"` // read data source name.
	Active      int      `json:",optional"` // pool
	Idle        int      `json:",optional"` // pool
	IdleTimeout string   `json:",optional"` // connect max life time.
}

Config mysql config.

type DB 

type DB struct {
	// contains filtered or unexported fields
}

DB database.

func NewMySQL 

func NewMySQL(c *Config) (db *DB)

NewMySQL new db and retry connection when has error.

func Open 

func Open(c *Config) (*DB, error)

Open opens a database specified by its database driver name and a driver-specific data source name, usually consisting of at least a database name and connection information.

func (*DB) Exec 

func (db *DB) Exec(c context.Context, query string, args ...interface{}) (res sql.Result, err error)

Exec executes a query without returning any rows. The args are for any placeholder parameters in the query.

func (*DB) Master 

func (db *DB) Master() *DB

Master return *DB instance direct use master conn use this *DB instance only when you have some reason need to get result without any delay.

func (*DB) NamedExec 

func (db *DB) NamedExec(c context.Context, query string, arg interface{}) (res sql.Result, err error)

NamedExec using this DB. Any named placeholder parameters are replaced with fields from arg.

func (*DB) NamedQueryRow 

func (db *DB) NamedQueryRow(c context.Context, v interface{}, query string, arg interface{}) error

NamedQueryRow using this DB. Any named placeholder parameters are replaced with fields from arg.

func (*DB) NamedQueryRowPartial 

func (db *DB) NamedQueryRowPartial(ctx context.Context, v interface{}, query string, arg interface{}) error

func (*DB) NamedQueryRows 

func (db *DB) NamedQueryRows(c context.Context, v interface{}, query string, arg interface{}) error

func (*DB) NamedQueryRowsPartial 

func (db *DB) NamedQueryRowsPartial(c context.Context, v interface{}, query string, arg interface{}) (err error)

func (*DB) Prepare 

func (db *DB) Prepare(c context.Context, query string) (sqlx.StmtSession, error)

Prepare creates a prepared statement for later queries or executions. Multiple queries or executions may be run concurrently from the returned statement. The caller must call the statement's Close method when the statement is no longer needed.

func (*DB) QueryRow 

func (db *DB) QueryRow(c context.Context, v interface{}, query string, args ...interface{}) (err error)

QueryRow executes a query that is expected to return at most one row. QueryRow always returns a non-nil value. Errors are deferred until Row's Scan method is called.

func (*DB) QueryRowPartial 

func (db *DB) QueryRowPartial(c context.Context, v interface{}, query string, args ...interface{}) error

func (*DB) QueryRows 

func (db *DB) QueryRows(c context.Context, v interface{}, query string, args ...interface{}) (err error)

QueryRows executes a query that returns rows, typically a SELECT. The args are for any placeholder parameters in the query.

func (*DB) QueryRowsPartial 

func (db *DB) QueryRowsPartial(c context.Context, v interface{}, query string, args ...interface{}) (err error)

func (*DB) Transact 

func (db *DB) Transact(ctx context.Context, fn func(*Tx) error) error

type ExecResult 

type ExecResult struct {
	LastInsertId int64
	RowsAffected int64
}

type StoreChannel 

type StoreChannel chan StoreResult

func Do 

func Do(f func(result *StoreResult)) StoreChannel

type StoreResult 

type StoreResult struct {
	Data interface{}
	Cost int
	Err  error
}

func TxWrapper 

func TxWrapper(ctx context.Context, db *DB, txF func(*Tx, *StoreResult)) *StoreResult

TxWrapper TxWrapper

type Tx 

type Tx struct {
	*reflectx.Mapper
	// contains filtered or unexported fields
}

func (*Tx) Context 

func (tx *Tx) Context() context.Context

func (*Tx) Exec 

func (tx *Tx) Exec(query string, args ...interface{}) (sql.Result, error)

func (*Tx) NamedExec 

func (tx *Tx) NamedExec(query string, arg interface{}) (sql.Result, error)

NamedExec using this DB. Any named placeholder parameters are replaced with fields from arg.

func (*Tx) NamedQueryRow 

func (tx *Tx) NamedQueryRow(v interface{}, query string, arg interface{}) error

NamedQueryRow using this DB. Any named placeholder parameters are replaced with fields from arg.

func (*Tx) NamedQueryRowPartial 

func (tx *Tx) NamedQueryRowPartial(v interface{}, query string, arg interface{}) error

func (*Tx) NamedQueryRows 

func (tx *Tx) NamedQueryRows(v interface{}, query string, arg interface{}) error

func (*Tx) NamedQueryRowsPartial 

func (tx *Tx) NamedQueryRowsPartial(v interface{}, query string, arg interface{}) error

func (*Tx) Prepare 

func (tx *Tx) Prepare(query string) (sqlx.StmtSession, error)

func (*Tx) QueryRow 

func (tx *Tx) QueryRow(v interface{}, query string, args ...interface{}) error

func (*Tx) QueryRowPartial 

func (tx *Tx) QueryRowPartial(v interface{}, query string, args ...interface{}) error

func (*Tx) QueryRows 

func (tx *Tx) QueryRows(v interface{}, query string, args ...interface{}) error

func (*Tx) QueryRowsPartial 

func (tx *Tx) QueryRowsPartial(v interface{}, query string, args ...interface{}) error

Source Files

View all Source files

Directories

Path Synopsis
Package reflectx implements extensions to the standard reflect lib suitable for implementing marshalling and unmarshalling packages.
 Package reflectx implements extensions to the standard reflect lib suitable for implementing marshalling and unmarshalling packages.

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