Auto increment key table for node-levelup, leveldb.
Auto incrementing keys.
Read, write, delete fields in a record individually.
Read, write, delete records.
var db = require('levelup')('./mydb')
require("level-autotable")(db)
You must call initAutoKeys before using the database.
db.initAutoKeys(callback)
You can call this from inside a request handler. Initialization is done the first time round. On subsequent calls it will just call next.
app.use(function(req, res, next) {
db.initAutoKeys(function() {next()})
})
Get a new key. The key is a string with integer value starting from 1. Use parseInt to do math on the key. Will throw an error if callback is not a function.
var key
db.newAutoKey(function(err, newKey) {
key = newKey
})
Handle fields individually.
Put a field
db.putField(key, "name", "John", options, callback)
db.putField(key, "email", "john@example.org", options, callback)
The fieldname must be a valid javascript var name. ie only word chars _ and $ allowed. Will throw an error otherwise!
Get a field.
db.getField(key, fieldname, options, callback)
Delete a field.
db.delField(key, fieldname, options, callback)
Get a record.
db.getRecord(key, function(err, value) {
console.log(value) // {name: "John", email: "john@example.org"}
})
Put a record.
db.putRecord(key, {name: "John", email: "john@example.org"}, function(err) {
//
})
Delete a record.
db.delRecord(key, function(err) {
//
})