Collections

Handle schema-based validation and data creation in a database.

Setup

const Collection = require('dubnium/collection');
const collection = new Collection(db, name, schema)

Parameter	Type	About
db	Object	The database instance this collection is associated with.
name	String	The prefix or name of the collection.
schema	Object | String	Schema definition for validating data. Can be: - A string: any non-null value is valid. - An object: keys are field names and values are either expected types ("string", "number", etc.) or "required" for mandatory fields.

Validate a Record

• If schema is a string, validation passes if data is not undefined or null.

• If schema is an object:

  • Each key in the schema must exist in the data.

  • "required" fields must be non-empty.

  • Each field must match the expected type.

collection.validate(data)

Parameters

Name	Type	About
data	Object	The data to validate.

Returns

Type	About
Boolean	true if the data matches the schema, false otherwise.

Creates a new record in the database after validating it against the schema.

collection.create('tag', data)

Parameters

Name	Type	About
tag	String	Unique identifier for the record.
data	Object |String	Data to be stored.

Returns

• A promise resolving to the result of db.create(tag, data)

Full Example

const Collection = require('./Collection');
const db = require('./myDatabase'); // Must implement create(tag, data)

const userSchema = {
  username: 'string',
  email: 'string',
  password: 'required'
};

const users = new Collection(db, 'users', userSchema);

async function addUser() {
  const userData = { username: 'alice', email: '[email protected]', password: 'secret' };
  try {
    const result = await users.create('user_1', userData);
    console.log('User created:', result);
  } catch (err) {
    console.error(err);
  }
}

addUser();