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rows.go
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/
rows.go
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package impala
import (
"database/sql/driver"
"reflect"
"github.com/bippio/go-impala/hive"
)
// Rows is an iterator over an executed query's results.
type Rows struct {
rs *hive.ResultSet
schema *hive.TableSchema
closefn func() error
}
// Close closes rows iterator
func (r *Rows) Close() error {
return r.closefn()
}
// Columns returns the names of the columns
func (r *Rows) Columns() []string {
var cols []string
for _, col := range r.schema.Columns {
cols = append(cols, col.Name)
}
return cols
}
// ColumnTypeScanType returns column's native type
func (r *Rows) ColumnTypeScanType(index int) reflect.Type {
return r.schema.Columns[index].ScanType
}
// ColumnTypeDatabaseTypeName returns column's database type name
func (r *Rows) ColumnTypeDatabaseTypeName(index int) string {
return r.schema.Columns[index].DatabaseTypeName
}
// Next prepares next row for scanning
func (r *Rows) Next(dest []driver.Value) error {
return r.rs.Next(dest)
}