サンプルアプリ

churaのイメージをつかんでもらうために､単純なサンプルを元に説明します。まだ、実装されていないところもありますが､イメージということで。
このサンプルは､従業員管理のアプリケーションです。S2JSF-exampleに出てくるやつの簡易版です。テーブルは次の2つです。

CREATE TABLE department (

  id NUMERIC(9) NOT NULL PRIMARY KEY,

  name VARCHAR(20)

);

CREATE TABLE employee (

  id NUMERIC(9) NOT NULL PRIMARY KEY,

  name VARCHAR(20),

  deparment_id NUMERIC(9),

  CONSTRAINT fk_department_id FOREIGN KEY (department_id)

    REFERENCES department(id)

);

このスキーマ情報を元に次のEntity、Dao、EntityLogicの雛型を自動生成します。

@Entity

public class Department {

  @Id(generate=GeneratorType.AUTO)

  private int id;

  private String name;

  ...

}

@Entity

public class Employee {

  @Id(generate=GeneratorType.AUTO)

  private int id;

  private String name;

  @ManyToOne

  private Department department;

  ...

}

public interface DepartmentDao {

  List findAll();

  Department find(int id);

  void persist(Department department);

  void remove(Department department);

  boolean contains(Department department);

  Employee merge(Department department);

  void refresh(Department department);

  void readLock(Department department);

  void writeLock(Department department);

}

public interface EmployeeDao {

  List findAll();

  Employee find(int id);

  void persist(Employee employee);

  void remove(Employee employee);

  boolean contains(Employee employee);

  Employee merge(Employee employee);

  void refresh(Employee employee);

  void readLock(Employee employee);

  void writeLock(Employee employee);

}

Daoの実装は､AOPで自動生成されるので､必要ありません。

public interface DepartmentLogic {

  List findAll();

  Department find(int id);

  void persist(Department department);

  void remove(Department department);

}

public interface EmployeeLogic {

  List findAll();

  Employee find(int id);

  void persist(Employee employee);

  void remove(Employee employee);

}

EntityLogicについては､実装クラスの雛型も作成されます。

public class DepartmentLogicImpl implements DepartmentLogic {

  private DepartmentDao dao;

  ...

  List findAll() {

    return dao.findAll();

  }

  ...

}

public class EmployeeLogicImpl implements EmployeeLogic {

  private EmployeeDao dao;

  ...

  List findAll() {

    return dao.findAll();

  }

  ...

}