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main.go
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main.go
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package main
import (
"fmt"
"log"
"github.com/dgraph-io/badger"
)
func main() {
// A default badger config is provided in the DefaultOptions.
// We use that, and just add where to store the files.
opts := badger.DefaultOptions("./db")
db, err := badger.Open(opts)
if err != nil {
log.Fatal("error: failed to open badger database: ", err, "\n")
}
defer db.Close()
txn := db.NewTransaction(true)
err = txn.Set([]byte("Bjørn Tore"), []byte("Svinningen"))
if err != nil {
log.Println("error: txn.Set failed: ", err)
}
err = txn.Commit()
if err != nil {
log.Println("error: txn.Commit failed: ", err)
}
// ---------------------GET VALUES-----------------------
txr := db.NewTransaction(false)
item, err := txr.Get([]byte("Bjørn Tore"))
if err != nil {
log.Println("error: txn.Get failed: ", err)
}
value, err := item.ValueCopy(nil)
if err != nil {
log.Println("error: item.Value failed: ", err)
}
fmt.Println(string(value))
// -----------------------ITERATOR-------------------------
iterateOpts := badger.DefaultIteratorOptions
iterator := txr.NewIterator(iterateOpts)
//We have to rewind the iterator.
iterator.Rewind()
defer iterator.Close()
for {
fmt.Println("CHECKING !!!")
fmt.Printf("Found : %v \n", iterator.Item().String())
iterator.Next()
if !iterator.Valid() {
log.Println("*** last item for iteration done")
return
}
}
}