java-design-patterns/dao-factory/etc/dao-factory.puml

@startuml
package com.iluwatar.daofactory {
    class App {
        {static} void main(String[] args)
    }

    class Customer<T> {
        T id
        String name
    }

    interface CustomerDAO<ID> {
        void save(Customer<ID> customer)
        void update(Customer<ID> customer)
        void delete(ID id)
        List<Customer<ID>> findAll()
        Optional<Customer<ID>> findById(ID id)
        void deleteSchema()
    }

    abstract class DAOFactory {
    {static} DAOFactory getDataSource(DataSourceType dataType)
    {abstract} CustomerDAO createCustomerDAO()
    }

    enum DataSourceType {
        H2
        Mongo
        FlatFile
    }

    class FlatFileCustomerDAO implements CustomerDAO<Long> {
            void save(Customer<Long> customer)
            void update(Customer<Long> customer)
            void delete(Long id)
            List<Customer<Long>> findAll()
            Optional<Customer<Long>> findById(Long id)
            void deleteSchema()
    }

    class H2CustomerDAO implements CustomerDAO<Long> {
                    void save(Customer<Long> customer)
                    void update(Customer<Long> customer)
                    void delete(Long id)
                    List<Customer<Long>> findAll()
                    Optional<Customer<Long>> findById(Long id)
                    void deleteSchema()
    }

    class FlatFileDataSourceFactory extends DAOFactory {
        CustomerDAO createCustomerDAO()
    }

    class H2DataSourceFactory extends DAOFactory {
        CustomerDAO createCustomerDAO()
    }

    class MongoCustomerDAO implements CustomerDAO<ObjectId> {
                    void save(Customer<ObjectId> customer)
                    void update(Customer<ObjectId> customer)
                    void delete(ObjectId id)
                    List<Customer<ObjectId>> findAll()
                    Optional<Customer<ObjectId>> findById(ObjectId id)
                    void deleteSchema()
    }
    class MongoDataSourceFactory extends DAOFactory {
        CustomerDAO createCustomerDAO()
    }

    DataSourceType ..+ DAOFactory
    DAOFactory ..+ App
    App --> Customer
 }
@enduml