query

type AstField struct {
	Expr  string `json:"expr"`
	Alias string `json:"alias"`
	Key   string `json:"key"`
}

type AstStatement struct {
	Select  []*AstField `json:"select"`
	From    []string    `json:"from"`
	Where   []string    `json:"where"`
	GroupBy []string    `json:"groupby"`
	OrderBy []*OrderBy  `json:"orderby"`
	Limit   int64       `json:"limit"`
}

type Filter struct {
	Key      string
	Operator string
	Value    interface{}
}

type OrderBy struct {
	Expr string `json:"expr"`
	Dir  string `json:"dir"`
}

type Queryer interface {
	Query(tsql, statement string, params map[string]interface{}, options url.Values) (*ResultSet, error)
	QueryWithFormat(tsql, statement, format string, langCodes i18n.LanguageCodes, params map[string]interface{}, filters []*Filter, options url.Values) (*ResultSet, interface{}, error)
	Export(tsql, statement string, params map[string]interface{}, options url.Values, handle func(id string, source []byte) error) error // 暂时没用到, 待移除

	QueryRaw(metrics, clusters []string, start, end int64, searchSource *elastic.SearchSource) (*elastic.SearchResult, error)
	SearchRaw(indices []string, searchSource *elastic.SearchSource) (*elastic.SearchResult, error)
}

type ResultSet struct {
	*tsql.ResultSet
	Details interface{}
	Elapsed struct {
		Search time.Duration `json:"search"`
	} `json:"elapsed"`
}