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stmt.go
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stmt.go
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package sql
import (
"context"
"database/sql/driver"
)
// conn defines a tracing wrapper for driver.Stmt.
type stmt struct {
stmt driver.Stmt
tracer *tracer
}
// Close implements driver.Stmt Close.
func (s *stmt) Close() error {
return s.stmt.Close()
}
// NumInput implements driver.Stmt NumInput.
func (s *stmt) NumInput() int {
return s.stmt.NumInput()
}
// Exec implements driver.Stmt Exec.
func (s *stmt) Exec(args []driver.Value) (driver.Result, error) {
return s.stmt.Exec(args)
}
// Query implements driver.Stmt Query.
func (s *stmt) Query(args []driver.Value) (driver.Rows, error) {
return s.stmt.Query(args)
}
// ExecContext implements driver.ExecerContext ExecContext.
func (s *stmt) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
span := s.tracer.newSpan(ctx)
if s.tracer.saveQuery {
span.SetTag(TagQuery, query)
}
defer span.Finish()
if execerContext, ok := s.stmt.(driver.ExecerContext); ok {
return execerContext.ExecContext(ctx, query, args)
}
values, err := namedValueToValue(args)
if err != nil {
return nil, err
}
return s.Exec(values)
}
// QueryContext implements Driver.QueryerContext QueryContext.
func (s *stmt) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (rows driver.Rows, err error) {
span := s.tracer.newSpan(ctx)
if s.tracer.saveQuery {
span.SetTag(TagQuery, query)
}
defer span.Finish()
if queryerContext, ok := s.stmt.(driver.QueryerContext); ok {
rows, err := queryerContext.QueryContext(ctx, query, args)
return rows, err
}
values, err := namedValueToValue(args)
if err != nil {
return nil, err
}
return s.Query(values)
}