package engine

import (
	"git.fsdpf.net/go/condition"
	"git.fsdpf.net/go/db"
	"git.fsdpf.net/go/reflux"
	"git.fsdpf.net/go/req"
)

type EngineCase struct {
	predicate *condition.Condition
	cb        func(data reflux.R, g req.UserAccessor) error
}

func (this EngineCase) ToSql(param condition.TokenValue) db.Expression {
	if this.predicate == nil || this.predicate.IsEmpty() {
		return db.V("NULL")
	}

	return this.predicate.ToSql(param)
}

func (this EngineCase) Execute(data reflux.R, g req.UserAccessor) error {
	return this.cb(data, g)
}