dbx

Documentation

Index

• type Database
  • func New() *Database
  • func NewWithLogger(logger log.Logger) *Database
  • func (db Database) Begin() (*Trx, error)
  • func (db Database) Close() error
  • func (db Database) Migrate()
  • func (db Database) Seed()
• type FieldInfo
• type NullInt
  • func (r NullInt) MarshalJSON() ([]byte, error)
• type NullString
  • func (r NullString) MarshalJSON() ([]byte, error)
• type NullTime
  • func (r NullTime) MarshalJSON() ([]byte, error)
• type RowMapper
  • func NewRowMapper() RowMapper
  • func (m *RowMapper) Map(dest interface{}, columns []string, scanner func(dest ...interface{}) error) error
• type Trx
  • func (trx Trx) Commit() error
  • func (trx Trx) Count(command string, args ...interface{}) (int, error)
  • func (trx Trx) Execute(command string, args ...interface{}) (int64, error)
  • func (trx Trx) Exists(command string, args ...interface{}) (bool, error)
  • func (trx Trx) Get(data interface{}, command string, args ...interface{}) error
  • func (trx Trx) QueryIntArray(command string, args ...interface{}) ([]int, error)
  • func (trx Trx) Rollback() error
  • func (trx Trx) Scalar(data interface{}, command string, args ...interface{}) error
  • func (trx Trx) Select(data interface{}, command string, args ...interface{}) error
• type TypeMapper
  • func NewTypeMapper(t reflect.Type) TypeMapper

Types

type Database

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

Database represents a connection to a SQL database

func New

func New() *Database

New creates a new Database instance without logging

func NewWithLogger

func NewWithLogger(logger log.Logger) *Database

NewWithLogger creates a new Database instance with logging or panic

func (Database) Begin

func (db Database) Begin() (*Trx, error)

Begin returns a new SQL transaction

func (Database) Close

func (db Database) Close() error

Close connection to database

func (Database) Migrate

func (db Database) Migrate()

Migrate the database to latest verion

func (Database) Seed

func (db Database) Seed()

Seed clean and insert new seed data for testing

type FieldInfo

type FieldInfo struct {
	FieldName  []string
	ColumnName string
}

FieldInfo is a simple struct to map Column -> Field

type NullInt

type NullInt struct {
	sql.NullInt64
}

NullInt representa a nullable integer

func (NullInt) MarshalJSON

func (r NullInt) MarshalJSON() ([]byte, error)

MarshalJSON interface redefinition

type NullString

type NullString struct {
	sql.NullString
}

NullString representa a nullable string

func (NullString) MarshalJSON

func (r NullString) MarshalJSON() ([]byte, error)

MarshalJSON interface redefinition

type NullTime

type NullTime struct {
	pq.NullTime
}

NullTime representa a nullable time.Time

func (NullTime) MarshalJSON

func (r NullTime) MarshalJSON() ([]byte, error)

MarshalJSON interface redefinition

type RowMapper

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

RowMapper is resposible for mapping a sql.Rows into a Struct (model)

func NewRowMapper

func NewRowMapper() RowMapper

NewRowMapper creates a new instance of RowMapper

func (*RowMapper) Map

func (m *RowMapper) Map(dest interface{}, columns []string, scanner func(dest ...interface{}) error) error

Map values from scanner (usually sql.Rows.Scan) into dest based on columns

type Trx

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

Trx represents a Database transaction

func (Trx) Commit

func (trx Trx) Commit() error

Commit current transaction

func (Trx) Count

func (trx Trx) Count(command string, args ...interface{}) (int, error)

Count returns number of rows

func (Trx) Execute

func (trx Trx) Execute(command string, args ...interface{}) (int64, error)

Execute given SQL command

func (Trx) Exists

func (trx Trx) Exists(command string, args ...interface{}) (bool, error)

Exists returns true if at least one record is found

func (Trx) Get

func (trx Trx) Get(data interface{}, command string, args ...interface{}) error

Get first row and bind to given data

func (Trx) QueryIntArray

func (trx Trx) QueryIntArray(command string, args ...interface{}) ([]int, error)

QueryIntArray executes given SQL command and return first column as int

func (Trx) Rollback

func (trx Trx) Rollback() error

Rollback current transaction

func (Trx) Scalar

func (trx Trx) Scalar(data interface{}, command string, args ...interface{}) error

Scalar returns first row and first column

func (Trx) Select

func (trx Trx) Select(data interface{}, command string, args ...interface{}) error

Select all matched rows bind to given data

type TypeMapper

type TypeMapper struct {
	Type   reflect.Type
	Fields map[string]FieldInfo
}

TypeMapper holds information about how to map SQL ResultSet to a Struct

func NewTypeMapper

func NewTypeMapper(t reflect.Type) TypeMapper

NewTypeMapper creates a new instance of TypeMapper for given reflect.Type