entity

Documentation

Index

• Constants
• func FieldByIndexes(v reflect.Value, indexes []int) reflect.Value
• func FieldByIndexesRO(v reflect.Value, indexes []int) (reflect.Value, bool)
• type Columns
  • func (s *Columns) Len() int
  • func (s *Columns) Less(i, j int) bool
  • func (s *Columns) Swap(i, j int)
• type FieldMapper
  • func DefaultFieldMapper() *FieldMapper
  • func NewFieldMapper() *FieldMapper
  • func (m *FieldMapper) Columns(entity interface{}) (*Columns, *Columns)
  • func (m *FieldMapper) ColumnsForType(typ reflect.Type) []string
  • func (m *FieldMapper) Keys(entity interface{}) (*Values, error)
  • func (m *FieldMapper) KeysForType(typ reflect.Type) []string
  • func (m *FieldMapper) TraversalsByName(t reflect.Type, names []string) ([][]int, []bool)
  • func (m *FieldMapper) TraversalsByNameFunc(t reflect.Type, names []string, fn func(int, []int, bool) error) error
• type Generator
  • func NewGenerator(m *FieldMapper) *Generator
  • func (g *Generator) Delete(table string, keys *Columns) (string, []interface{})
  • func (g *Generator) Insert(table string, entity interface{}) (string, []interface{})
  • func (g *Generator) Select(table string, entity interface{}, keys *Columns) (string, []interface{})
  • func (g *Generator) Update(table string, entity interface{}, names []string) (string, []interface{})
  • func (g *Generator) Upsert(table string, entity interface{}, names []string) (string, []interface{})
• type Synthetic
• type Values
• type Zeroer

Constants

const Tag = "db"

Functions

func FieldByIndexes

func FieldByIndexes(v reflect.Value, indexes []int) reflect.Value

func FieldByIndexesRO

func FieldByIndexesRO(v reflect.Value, indexes []int) (reflect.Value, bool)

Types

type Columns

type Columns struct {
	Cols []string
	Vals []interface{}
}

func (*Columns) Len

func (s *Columns) Len() int

func (*Columns) Less

func (s *Columns) Less(i, j int) bool

func (*Columns) Swap

func (s *Columns) Swap(i, j int)

type FieldMapper

type FieldMapper struct {
	*reflectx.Mapper
}

func DefaultFieldMapper

func DefaultFieldMapper() *FieldMapper

func NewFieldMapper

func NewFieldMapper() *FieldMapper

func (*FieldMapper) Columns

func (m *FieldMapper) Columns(entity interface{}) (*Columns, *Columns)

func (*FieldMapper) ColumnsForType

func (m *FieldMapper) ColumnsForType(typ reflect.Type) []string

func (*FieldMapper) Keys

func (m *FieldMapper) Keys(entity interface{}) (*Values, error)

func (*FieldMapper) KeysForType

func (m *FieldMapper) KeysForType(typ reflect.Type) []string

func (*FieldMapper) TraversalsByName

func (m *FieldMapper) TraversalsByName(t reflect.Type, names []string) ([][]int, []bool)

TraversalsByName returns a slice of int slices which represent the struct traversals for each mapped name and a slice of bools which indicates whether each such traversal is omit-empty. Panics if t is not a struct or Indirectable to a struct. Returns empty int slice for each name not found.

func (*FieldMapper) TraversalsByNameFunc

func (m *FieldMapper) TraversalsByNameFunc(t reflect.Type, names []string, fn func(int, []int, bool) error) error

TraversalsByNameFunc traverses the mapped names and calls fn with the index of each name and the struct traversal represented by that name. Panics if t is not a struct or Indirectable to a struct. Returns the first error returned by fn or nil.

type Generator

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

func NewGenerator

func NewGenerator(m *FieldMapper) *Generator

func (*Generator) Delete

func (g *Generator) Delete(table string, keys *Columns) (string, []interface{})

func (*Generator) Insert

func (g *Generator) Insert(table string, entity interface{}) (string, []interface{})

func (*Generator) Select

func (g *Generator) Select(table string, entity interface{}, keys *Columns) (string, []interface{})

func (*Generator) Update

func (g *Generator) Update(table string, entity interface{}, names []string) (string, []interface{})

func (*Generator) Upsert

func (g *Generator) Upsert(table string, entity interface{}, names []string) (string, []interface{})

type Synthetic

type Synthetic interface {
	AdditionalColumns() *Columns
}

Synthetic is implemented by entities that produce additional "synthetic" columns to be stored alongside columns derived from fields of the entity.

Synthetic columns are read-only, they will not be fetched back from the database. They are generally intended to be used in cases where derived values are computed from the state of an entity when it it stored, perhaps for indexing purposes.

type Values

type Values struct {
	Cols []string
	Vals []reflect.Value
}

type Zeroer

type Zeroer interface {
	IsZero() bool
}

implemented by values that can express their zeronoess/emptiness