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dbstoreadapter.go
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dbstoreadapter.go
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package store
import (
sdk "github.com/ci123chain/ci123chain/pkg/abci/types"
dbm "github.com/tendermint/tm-db"
"io"
)
// Wrapper types for dbm.Db with implementation of KVStore
type dbStoreAdapter struct {
dbm.DB
}
func (dsa dbStoreAdapter) Get(key []byte) []byte {
v, err := dsa.DB.Get(key)
if err != nil {
return nil
}
return v
}
func (dsa dbStoreAdapter) Has(key []byte) bool {
ok, err := dsa.DB.Has(key)
if err != nil || !ok {
return false
}
return true
}
func (dsa dbStoreAdapter) Set(key, value []byte) {
_ = dsa.DB.Set(key, value)
}
func (dsa dbStoreAdapter) Delete(key []byte) {
_ = dsa.DB.Delete(key)
}
func (dsa dbStoreAdapter) Iterator(start, end []byte) sdk.Iterator {
I, _ := dsa.DB.Iterator(start,end)
return I
}
func (dsa dbStoreAdapter) ReverseIterator(start, end []byte) sdk.Iterator {
I, _ := dsa.DB.ReverseIterator(start, end)
return I
}
// Implements Store.
func (dsa dbStoreAdapter) GetStoreType() StoreType {
return sdk.StoreTypeDB
}
// Implements KVStore.
func (dsa dbStoreAdapter) CacheWrap() CacheWrap {
return NewCacheKVStore(dsa)
}
// CacheWrapWithTrace implements the KVStore interface.
func (dsa dbStoreAdapter) CacheWrapWithTrace(w io.Writer, tc TraceContext) CacheWrap {
return NewCacheKVStore(NewTraceKVStore(dsa, w, tc))
}
// Implements KVStore
func (dsa dbStoreAdapter) Prefix(prefix []byte) KVStore {
return prefixStore{dsa, prefix}
}
// Implements KVStore
func (dsa dbStoreAdapter) Gas(meter GasMeter, config GasConfig) KVStore {
return NewGasKVStore(meter, config, dsa)
}
// Implements KVStore
func (dsa dbStoreAdapter) Latest(keys []string) KVStore {
return nil
}
// Implements KVStore
func (dsa dbStoreAdapter) Parent() KVStore {
return nil
}
// dbm.DB implements KVStore so we can CacheKVStore it.
var _ KVStore = dbStoreAdapter{}
func (dsa dbStoreAdapter) RemoteIterator(start, end []byte) Iterator {
i, err := dsa.DB.Iterator(start, end)
if err != nil {
return nil
}
return i
}
//func ParentGetDbStoreAdapter(p KVStore, oriKey []byte) (db KVStore, key []byte){
// for {
// if reflect.TypeOf(p) != reflect.TypeOf(dbStoreAdapter{}) {
// p = p.Parent()
// if reflect.TypeOf(p) == reflect.TypeOf(prefixStore{}) {
// pre := p.(prefixStore).prefix
// oriKey = append(pre, oriKey...)
// }
// } else {
// db = p
// return
// }
// }
//}