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getter.go
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getter.go
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package dalgo2buntdb
import (
"context"
"encoding/json"
"errors"
"fmt"
"github.com/dal-go/dalgo/dal"
"github.com/tidwall/buntdb"
)
func (dtb database) Get(ctx context.Context, record dal.Record) error {
return dtb.db.View(func(tx *buntdb.Tx) error {
return transaction{tx: tx}.Get(ctx, record)
})
}
func (dtb database) GetMulti(ctx context.Context, records []dal.Record) error {
return dtb.db.View(func(tx *buntdb.Tx) error {
return transaction{tx: tx}.GetMulti(ctx, records)
})
}
func (t transaction) Get(_ context.Context, record dal.Record) error {
key := record.Key()
keyPath := key.String()
s, err := t.tx.Get(keyPath)
if err == nil {
record.SetError(nil)
} else {
if errors.Is(err, buntdb.ErrNotFound) {
err = dal.NewErrNotFoundByKey(key, err)
record.SetError(err)
}
return err
}
record.SetError(nil)
data := record.Data()
if data == nil {
record.SetError(errors.New("no target data object has been provided for unmarshalling"))
return nil
}
err = json.Unmarshal([]byte(s), data)
if err != nil {
err = fmt.Errorf("failed to unmarshall record data into target of type %T: %w", data, err)
record.SetError(err)
return err
}
return nil
}
func (t transaction) GetMulti(ctx context.Context, records []dal.Record) error {
for _, record := range records {
key := record.Key()
keyPath := key.String()
s, err := t.tx.Get(keyPath)
if errors.Is(err, buntdb.ErrNotFound) {
record.SetError(dal.NewErrNotFoundByKey(key, err))
continue
} else if err != nil {
record.SetError(err)
return err
}
record.SetError(nil)
data := record.Data()
if data == nil {
panic("record.Data() returned null")
//record.SetDataTo(func(target interface{}) error {
// return json.Unmarshal([]byte(s), target)
//})
}
if err = json.Unmarshal([]byte(s), data); err != nil {
record.SetError(err)
}
}
return nil
}