entity

package
v0.7.1-alpha Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jan 17, 2023 License: AGPL-3.0 Imports: 7 Imported by: 0

Documentation

Overview

Example (IsZero) 
type thing struct{}
var e any
fmt.Println(isZero(e))
e = &thing{}
fmt.Println(isZero(e))
fmt.Println(isZero(&thing{}))
fmt.Println(isZero((*thing)(nil)))
fmt.Println(isZero(thing{}))

Output:

true
false
false
true
true

Index

Examples

Constants

View Source 
const IDSeqMax32 = 4194303 // 0x3f_ffff
View Source 
const IDSeqMax64 = 281474976710655 // 0xffff_ffffffff
View Source 
const IDTypeMax32 = 511 // 0x1ff
View Source 
const IDTypeMax64 = 32767 // 0x7fff

Variables

This section is empty.

Functions

func MapIDField 

func MapIDField[E Entity[I], I ID](m *FieldMap[E], col *bsq.Column)

func NotNoRows 

func NotNoRows(err error) error

Types

type Base 

type Base[E Entity[I], I ID] struct {
	// contains filtered or unexported fields
}

func (Base[_, ID]) EntityID 

func (eb Base[_, ID]) EntityID() ID

func (*Base[_, ID]) IDScanner 

func (eb *Base[_, ID]) IDScanner() sql.Scanner

func (*Base[E, ID]) SQLizeReader 

func (eb *Base[E, ID]) SQLizeReader() Reader[E, ID]

func (*Base[E, ID]) SetSQLizeReader 

func (eb *Base[E, ID]) SetSQLizeReader(rd Reader[E, ID])

type DBRepo 

type DBRepo[E Entity[I], I ID] struct {
	// contains filtered or unexported fields
}

func NewDBRepo 

func NewDBRepo[E Entity[I], I ID](d bsq.Dialect, id *bsq.Column, m *FieldMap[E]) (repo *DBRepo[E, I], err error)

func (*DBRepo[E, I]) Create 

func (r *DBRepo[E, I]) Create(q sqlize.Querier, entity E) (E, error)

func (*DBRepo[E, ID]) Delete 

func (r *DBRepo[E, ID]) Delete(q sqlize.Querier, id ID) error

func (*DBRepo[E, I]) Prepare 

func (r *DBRepo[E, I]) Prepare(db *sql.DB) error

func (*DBRepo[E, ID]) Read 

func (r *DBRepo[E, ID]) Read(q sqlize.Querier, id ID, reuse E) (E, error)

func (*DBRepo[E, ID]) Update 

func (r *DBRepo[E, ID]) Update(q sqlize.Querier, entity E) error

type Entity 

type Entity[I ID] interface {
	EntityID() I
	IDScanner() sql.Scanner
}

type Entity32 

type Entity32 = Entity[ID32]

type Entity64 

type Entity64 = Entity[ID64]

type FieldMap 

type FieldMap[E any] struct {
	// contains filtered or unexported fields
}

func (*FieldMap[E]) Clone 

func (m *FieldMap[E]) Clone() *FieldMap[E]

func (*FieldMap[E]) FromSQL 

func (m *FieldMap[E]) FromSQL(i int) func(E) any

func (*FieldMap[E]) MapBoth 

func (m *FieldMap[E]) MapBoth(col *bsq.Column, tofrom func(E) any)

func (*FieldMap[E]) MapFrom 

func (m *FieldMap[E]) MapFrom(col *bsq.Column, from func(E) any)

TODO twisted dependency?

func (*FieldMap[E]) MapTo 

func (m *FieldMap[E]) MapTo(col *bsq.Column, to func(E) any)

TODO twisted dependency?

func (*FieldMap[E]) MapToAndFrom 

func (m *FieldMap[E]) MapToAndFrom(col *bsq.Column, toSQL, fromSQL func(E) any)

func (*FieldMap[E]) ToSQL 

func (m *FieldMap[E]) ToSQL(i int) func(E) any

type ID 

type ID interface {
	ID32 | ID64
}

type ID32 

type ID32 int32

ID32 is the 32-bit ID type.

func MakeID32 

func MakeID32(t TypeID, s uint32) (ID32, error)

MakeID32 creates an ID32 from the TypeID t and the sequence value s.

func MustMakeID32 

func MustMakeID32(t TypeID, s uint32) ID32

MustMakeID32 panics if MakeID32 returns an error.

func NoRowsNoErr32 

func NoRowsNoErr32(id ID32, err error) (ID32, error)

NoRowsNoErr32 returns sqlize.NoID, nil when err is sql.ErrNoRows

func (*ID32) Scan 

func (id *ID32) Scan(src interface{}) error

func (ID32) Type 

func (id ID32) Type() TypeID

Type returns the TypeID from id.

func (ID32) Value 

func (id ID32) Value() (driver.Value, error)

type ID64 

type ID64 int64

ID64 is the 64-bit ID type.

func MakeID64 

func MakeID64(t TypeID, s uint64) (ID64, error)

MakeID64 creates an ID64 from the TypeID t and the sequence value s.

func MustMakeID64 

func MustMakeID64(t TypeID, s uint64) ID64

MustMakeID64 panics if MakeID64 returns an error.

func NoRowsNoErr64 

func NoRowsNoErr64(id ID64, err error) (ID64, error)

NoRowsNoErr64 returns sqlize.NoID, nil when err is sql.ErrNoRows

func (*ID64) Scan 

func (id *ID64) Scan(src interface{}) error

func (ID64) Type 

func (id ID64) Type() TypeID

Type returns the TypeID from id.

func (ID64) Value 

func (id ID64) Value() (driver.Value, error)

type Reader 

type Reader[E Entity[I], I ID] interface {
	Read(q sqlize.Querier, id I, reuse E) (E, error)
}

type Ref 

type Ref[E Entity[I], I ID] struct {
	// contains filtered or unexported fields
}

func RefEntity 

func RefEntity[I ID, E Entity[I]](entity E) Ref[E, I]

func RefID 

func RefID[E Entity[I], I ID](r Reader[E, I], id I) Ref[E, I]

func (*Ref[E, ID]) Get 

func (ref *Ref[E, ID]) Get(db sqlize.Querier) (entity E, err error)

func (Ref[E, ID]) ID 

func (ref Ref[E, ID]) ID() ID

func (*Ref[E, ID]) Nil 

func (ref *Ref[E, ID]) Nil() bool

func (*Ref[E, ID]) Resolved 

func (ref *Ref[E, ID]) Resolved() (is bool, entity E)

func (*Ref[E, I]) Scanner 

func (ref *Ref[E, I]) Scanner(r Reader[E, I]) refScanner[E, I]

func (*Ref[E, ID]) Set 

func (ref *Ref[E, ID]) Set(entity E)

func (*Ref[E, ID]) SetID 

func (ref *Ref[E, ID]) SetID(r Reader[E, ID], id ID)

func (*Ref[E, ID]) SetReader 

func (ref *Ref[E, ID]) SetReader(r Reader[E, ID])

func (*Ref[E, ID]) SetRef 

func (ref *Ref[E, ID]) SetRef(r Ref[E, ID])

func (Ref[E, ID]) Value 

func (ref Ref[E, ID]) Value() (driver.Value, error)

func (Ref[E, ID]) WithReader 

func (ref Ref[E, ID]) WithReader(r Reader[E, ID]) (res Ref[E, ID])

type Repo 

type Repo[E Entity[I], I ID] interface {
	Reader[E, I]
	Create(q sqlize.Querier, entity E) (E, error)
	Update(q sqlize.Querier, entity E) error
	Delete(q sqlize.Querier, id I) error
}

type TypeID 

type TypeID = uint16

To support ploymorphism, IDs consist of a TypeID part and a sequence part. The number of bits for both parts depend on the number of bits in the ID type. Currently only ID32 and ID64, i.e. int32 and int64, are supported ID types. A valid type id must be > 0.

type TypeTable 

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

func NewTypeTable 

func NewTypeTable(conn sqlize.Querier, table string) (res TypeTable, err error)

func (TypeTable) ForEach 

func (idt TypeTable) ForEach(do func(tid TypeID, tag string) (done bool)) (hasDone bool)

func (TypeTable) ID 

func (idt TypeTable) ID(tag string) TypeID

func (TypeTable) Tag 

func (idt TypeTable) Tag(tid TypeID) string

Source Files

View all Source files

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