golib/infra/ii/field_method.go

package ii

import (
	"golib/features/mo"
)

func (f *FieldInfo) DefaultValue() any {
	return f.defaultValue
}

func (f *FieldInfo) SubField(name string) (FieldInfo, bool) {
	for _, field := range f.Fields {
		if field.Name == name {
			return field, true
		}
	}
	return FieldInfo{}, false
}

func (f *FieldInfo) HasLookup() bool {
	return f.Lookup.ForeignField != "" && f.Lookup.From != "" && f.Lookup.AS != ""
}

func (f *FieldInfo) Looker() *mo.Looker {
	l := new(mo.Looker)
	l.From(f.Lookup.From)
	l.LocalField(f.Name)
	l.ForeignField(f.Lookup.ForeignField)
	l.As(f.Lookup.AS)

	pipe := mo.Pipeline{}

	if !f.Lookup.List {
		pipe = append(pipe, mo.NewLimiter(1).Pipeline())
	}

	if len(f.Fields) > 0 {
		p := mo.Projecter{}
		for _, field := range f.Fields {
			p.AddEnable(field.Name)
		}
		pipe = append(pipe, p.Pipeline())
	}

	l.Pipe(pipe)

	return l
}