/
query_repo.go
59 lines (46 loc) · 1.12 KB
/
query_repo.go
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package infrastructure
import (
"database/sql"
"github.com/KarnerTh/qlookout/core/usecase/query"
)
type queryRepo struct {
db *sql.DB
}
func NewQueryRepo(db *sql.DB) query.QueryRepo {
return queryRepo{db: db}
}
func (q queryRepo) Query(queryString string) (query.QueryResult, error) {
stmt, err := q.db.Prepare(queryString)
if err != nil {
return query.QueryResult{}, err
}
defer stmt.Close()
rows, err := stmt.Query()
if err != nil {
return query.QueryResult{}, err
}
columns, err := rows.Columns()
if err != nil {
return query.QueryResult{}, err
}
var rowDataList []map[string]any
for rows.Next() {
columnValues := make([]any, len(columns))
columnPointers := make([]any, len(columns))
for i := range columns {
columnPointers[i] = &columnValues[i]
}
if err = rows.Scan(columnPointers...); err != nil {
return query.QueryResult{}, err
}
rowValue := make(map[string]any)
for i, column := range columns {
rowValue[column] = *columnPointers[i].(*any)
}
rowDataList = append(rowDataList, rowValue)
}
return query.QueryResult{
Columns: columns,
Rows: rowDataList,
}, nil
}