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package main
import (
"database/sql"
"fmt"
"github.com/mattn/go-sqlite3"
"log"
)
func main() {
const (
use_hook = true
load_query = "SELECT load_extension('sqlite3_mod_regexp.dll')"
)
sql.Register("sqlite3_with_extensions",
&sqlite3.SQLiteDriver{
EnableLoadExtension: true,
ConnectHook: func(c *sqlite3.SQLiteConn) error {
if use_hook {
stmt, err := c.Prepare(load_query)
if err != nil {
return err
}
_, err = stmt.Exec(nil)
if err != nil {
return err
}
return stmt.Close()
}
return nil
},
})
db, err := sql.Open("sqlite3_with_extensions", ":memory:")
if err != nil {
log.Fatal(err)
}
defer db.Close()
if !use_hook {
if _, err = db.Exec(load_query); err != nil {
log.Fatal(err)
}
}
// Force db to make a new connection in pool
// by putting the original in a transaction
tx, err := db.Begin()
if err != nil {
log.Fatal(err)
}
defer tx.Commit()
// New connection works (hopefully!)
rows, err := db.Query("select 'hello world' where 'hello world' regexp '^hello.*d$'")
if err != nil {
log.Fatal(err)
}
defer rows.Close()
for rows.Next() {
var helloworld string
rows.Scan(&helloworld)
fmt.Println(helloworld)
}
}
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