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payload.go
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payload.go
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package dbkit
import (
"github.com/kitstack/dbkit/definitions"
"github.com/kitstack/dbkit/specs"
"github.com/kitstack/depkit"
"reflect"
)
func init() {
depkit.Register[specs.UseModelDefinition](definitions.Use)
}
type payload[T specs.Model] struct {
result []T
model T
modelDefinition specs.ModelDefinition
fields []specs.DriverField
joins []specs.DriverJoin
wheres []specs.DriverWhere
limit specs.DriverLimit
}
func (p *payload[T]) Database() string {
return p.ModelDefinition().DatabaseName()
}
func (p *payload[T]) Index() int {
return p.ModelDefinition().Index()
}
func (p *payload[T]) Fields() []specs.DriverField {
return p.fields
}
func (p *payload[T]) Join() []specs.DriverJoin {
return p.joins
}
func (p *payload[T]) Where() []specs.DriverWhere {
return p.wheres
}
func (p *payload[T]) Limit() specs.DriverLimit {
return p.limit
}
func (p *payload[T]) Mapping() (mapping []any, err error) {
for _, field := range p.Fields() {
fieldDefinition, err := p.ModelDefinition().GetFieldByName(field.Name())
if err != nil {
return nil, err
}
mapping = append(mapping, fieldDefinition.Copy())
}
return
}
func (p *payload[T]) OnScan(result []any) (err error) {
for i, field := range p.Fields() {
fieldDefinition, err := p.ModelDefinition().GetFieldByName(field.Name())
if err != nil {
return err
}
fieldDefinition.Set(result[i])
}
p.result = append(p.result, p.ModelDefinition().Copy().(T))
return
}
func (p *payload[T]) Table() string {
return p.ModelDefinition().TableName()
}
func (p *payload[T]) Result() []T {
return p.result
}
func (p *payload[T]) SetFields(fields []specs.DriverField) specs.Payload {
p.fields = fields
return p
}
func (p *payload[T]) SetJoins(joins []specs.DriverJoin) specs.Payload {
p.joins = joins
return p
}
func (p *payload[T]) SetWheres(wheres []specs.DriverWhere) specs.Payload {
p.wheres = wheres
return p
}
func (p *payload[T]) SetLimit(limit specs.DriverLimit) specs.Payload {
p.limit = limit
return p
}
func (p *payload[T]) ModelDefinition() specs.ModelDefinition {
if p.modelDefinition == nil {
p.modelDefinition = depkit.Get[specs.UseModelDefinition]()(p.model).Parse()
}
return p.modelDefinition
}
func NewPayload[T specs.Model](model ...specs.Model) specs.PayloadAugmented[T] {
p := new(payload[T])
var tmp T
p.model = tmp
valueOf := reflect.ValueOf(p.model)
if len(model) > 0 && !valueOf.IsValid() {
p.model = model[0].(T)
}
return p
}