Added Wrapper Functions To Support Transition From GKVLite

This commit is contained in:
unknown 2014-02-10 13:08:35 +00:00
parent 083d381acb
commit 7530795d42
2 changed files with 88 additions and 0 deletions

View file

@ -38,6 +38,11 @@ var errString = map[UnQLiteError]string{
// Database ...
type Database struct {
handle *C.unqlite
// By Providing Marshaller and Unmarshaller Functions we can marshal to BSON
// Rather then JSON without being dependant on BSON.
marshal MarshalFunction
unmarshal UnmarshalFunction
}
// Cursor ...

83
wrappers.go Normal file
View file

@ -0,0 +1,83 @@
package unqlitego
/*
* Additional Database Functions to Aid Transaciotn From GKVLite
*/
import (
"encoding/json"
)
type MarshalFunction func(interface{}) ([]byte, error)
type UnmarshalFunction func([]byte, interface{}) error
func (t *Database) Marshal() MarshalFunction {
if t.marshal != nil {
return t.marshal
} else {
return json.Marshal
}
}
func (t *Database) SetMarshal(override MarshalFunction) {
t.marshal = override
}
func (t *Database) Unmarshal() UnmarshalFunction {
if t.unmarshal != nil {
return t.unmarshal
} else {
return json.Unmarshal
}
}
func (t *Database) SetUnmarshal(override UnmarshalFunction) {
t.unmarshal = override
}
func (t *Database) SetObject(key string, object interface{}) error {
byteObject, err := t.Marshal()(object)
if err != nil {
return err
}
err = t.Begin()
if err != nil {
return err
}
err = t.Store([]byte(key), byteObject)
if err != nil {
t.Rollback()
return err
}
err = t.Commit()
if err != nil {
t.Rollback()
return err
}
return nil
}
func (t *Database) GetObject(key string, object interface{}) error {
byteObject, err := t.Fetch([]byte(key))
if err != nil {
if err == UnQLiteError(-6) {
//Not Found is not an error in my world...
return nil
}
return err
}
if byteObject != nil {
err = t.Unmarshal()(byteObject, &object)
if err != nil {
return err
}
}
return nil
}