GitHub - doytowin/doyto-query: DoytoQuery - A Java implementation for the modern...

DoytoQuery - The best and the last ORM framework in Java.

Introduction

DoytoQuery is a powerful and easy-to-use ORM framework in Java. It comes out from an idea which is mapping a query object directly to a WHERE clause in SQL to query database. With the development of DoytoQuery, the idea formed a new ORM theory.

The Modern ORM Theory

1. We can define a query object mapping query statements.

2. We can define an entity object and cooperate with the query object to complete the CRUD operations of single-table.

3. Data Manipulation Language can be classified into three categories, corresponding to three different interfaces:
   1. CRUD for business tables: DataAccess
   2. CRD for association tables: AssociationService
   3. Aggregate/Relational query: DataQueryClient

Features

• Data Access Layer
  • CRUD operations for single/sharding table.
  • CRD operations for associative table.
  • Query with related entities and views.
• Service Layer
  • CRUD methods.
  • Second-Level Cache.
  • UserId Injection.
  • EntityAspect Extensions.
• Controller Layer
  • Support RESTFul API.
  • ErrorCode Pre-definition.
  • Exception Assertion.
  • Exception Handler.
  • JsonResponse Wrapper.
  • Request/Entity/Response Transition.
  • Group Validation.
• Seamless integration with Spring WebMvc.
• Support for relational databases and MongoDB.

Quick Usage

For a UserEntity defined as follows:

@Getter
@Setter
@Entity(name = "t_user")
public class UserEntity extends AbstractPersistable<Long> {
    private String username;
    private String email;
    private Boolean valid;
}

we can define a query object to query data from database as follows:

@Getter
@Setter
@SuperBuilder
@NoArgsConstructor
@AllArgsConstructor
public class UserQuery extends PageQuery {
    private String username;
    private String emailLike;
    private Boolean valid;
}

and invoke the DataAccess#query(Q) method like this:

@Service
public class UserService extends AbstractCrudService<UserEntity, Long, UserQuery> {
    public List<UserEntity> findValidGmailUsers() {
        UserQuery userQuery = UserQuery.builder().emailLike("@gmail.com").valid(true).pageSize(10).build();
        // Executed SQL: SELECT username, email, valid, id FROM t_user WHERE email LIKE ? AND valid = ? LIMIT 10 OFFSET 0
        // Parameters  : %@gmail.com%(java.lang.String), true(java.lang.Boolean)
        return dataAccess.query(userQuery);
    }
}

Please refer to the tests for more usages.

Architecture for 0.3.x and newer

Versions

Related resources

License

This project is under the Apache Licence v2.