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indexdb.go
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/
indexdb.go
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package main
import (
// "bytes"
// "encoding/gob"
// "time"
"github.com/rsms/go-log"
"github.com/syndtr/goleveldb/leveldb"
)
type IndexDB struct {
db *leveldb.DB
logger *log.Logger
}
type DocType struct {
Id string `json:"id"`
ParentId string `json:"parent_id"`
Name string `json:"name"`
}
type Doc struct {
Id string `json:"id"`
Version string `json:"version"`
Type string `json:"type"`
Tags []string `json:"tags"`
Body interface{} `json:"body"`
}
func IndexDBOpen(path string, logger *log.Logger) (*IndexDB, error) {
db, err := leveldb.OpenFile(path, nil)
return &IndexDB{
db: db,
logger: logger,
}, err
}
func (db *IndexDB) Close() error {
if db.db == nil {
return nil
}
err := db.db.Close()
db.db = nil
return err
}
func (db *IndexDB) PutDoc(doc ...*Doc) error {
// TODO
// consider returning conflicts
return nil
}
func (db *IndexDB) DefineTypes(types ...DocType) error {
batch := new(leveldb.Batch)
for _, dt := range types {
key := []byte("dtype:" + dt.Id)
val := []byte(dt.Name + "\n" + dt.ParentId)
batch.Put(key, val)
}
return db.db.Write(batch, nil)
}