surrealpatch/util/keys/keys.go
Tobie Morgan Hitchcock e300e9c423 Improve efficiency of database key encoding and decoding
Make use of the github.com/abcum/bump package to efficiently encode and decode from and to byte slices, whilst at the same time using encoder and decoder pools, instead of creating a new buffer for each encoding / decoding process.
2017-11-16 20:18:42 +00:00

70 lines
1.6 KiB
Go

// Copyright © 2016 Abcum Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package keys
import "time"
const (
// Ignore specifies an ignored field
Ignore = ignore
// Prefix is the lowest char found in a key
Prefix = prefix
// Suffix is the highest char found in a key
Suffix = suffix
// Ignore specifies an ignored field
ignore = "\x00"
// Prefix is the lowest char found in a key
prefix = "\x01"
// Suffix is the highest char found in a key
suffix = "\xff"
)
var (
// StartOfTime is a datetime in the past
StartOfTime = time.Unix(0, 0)
// EndOfTime is a datetime in the future
EndOfTime = time.Now().AddDate(50, 0, 0)
)
var (
skip string
)
var (
bEND = byte(0x00)
bPRE = byte(0x01)
bNIL = byte(0x02)
bVAL = byte(0x03)
bTME = byte(0x04)
bNEG = byte(0x05)
bPOS = byte(0x06)
bSTR = byte(0x07)
bARR = byte(0x08)
bSUF = byte(0x09)
)
const (
// MinNumber is the minimum number which can be accurately serialized
MinNumber = -1 << 53
// MaxNumber is the maximum number which can be accurately serialized
MaxNumber = 1<<53 - 1
)
// Key ...
type Key interface {
String() string
Encode() []byte
Decode(data []byte)
}