Java 映射和查询此实体的最佳方法
我有三个实体用户,中心和个人资料,所以用户根据他所在的中心有不同的个人资料。因此,我们有一个表,它链接了三个实体,称为*user\u center\u profile* 然后我们有另一个实体,叫做Permission,它链接到Profile,所以Profile有几个权限 因为主实体是用户,所以我将其映射为:Java 映射和查询此实体的最佳方法,java,spring,hibernate,orm,Java,Spring,Hibernate,Orm,我有三个实体用户,中心和个人资料,所以用户根据他所在的中心有不同的个人资料。因此,我们有一个表,它链接了三个实体,称为*user\u center\u profile* 然后我们有另一个实体,叫做Permission,它链接到Profile,所以Profile有几个权限 因为主实体是用户,所以我将其映射为: @Entity @Table(name = "profile") public class Profile implements Serial
@Entity
@Table(name = "profile")
public class Profile implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "idprofile")
private Long idProfile;
@Column(name = "codprofile")
private String codProfile;
@Column(name = "desprofile")
private String desProfile;
@OneToMany
@JoinTable(name = "profile_permission", joinColumns = { @JoinColumn(name = "idProfile") }, inverseJoinColumns = { @JoinColumn(name = "idPermission") })
private List<Permission> permissions = new ArrayList<Permission>();
/* getters and setters */
}
@Entity
@IdClass(CenterProfileId.class)
@Table(name = "user_center_profile")
public class CenterProfile implements Serializable {
@Id
@ManyToOne
private Center center;
@Id
@ManyToOne
private Profile profile;
/* getters and setters */
}
@Embeddable
public class CenterProfileId implements Serializable {
private static final long serialVersionUID = 1L;
@ManyToOne
@JoinColumn(name = "idCenter")
private Center center;
@ManyToOne
@JoinColumn(name = "idProfile")
private Profile profile;
/* getters, setters, equals, hashcode */
}
@Entity
@Table(name = "user")
public class User implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "idUser")
private Long idUser;
@Column(name = "codUser")
private String codUser;
/* other properties */
@ManyToMany(fetch = FetchType.EAGER)
@JoinTable(name = "user_center_profile", joinColumns = { @JoinColumn(name = "idUser") }, inverseJoinColumns = {
@JoinColumn(name = "idCenter"), @JoinColumn(name = "idProfile") })
private List<CenterProfile> centersProfileUser = new ArrayList<CenterProfile>();
@Transient
private Center selectedCenter;
/* getters, setters */
}
HashSet<Permission> set = new HashSet<Permission>();
for (CenterProfile cp : usuario.getCentersProfileUsuario()) {
// First we build subcriteria to return all the permissions for a certain profile
DetachedCriteria criteriaProfile = DetachedCriteria
.forClass(Profile.class);
criteriaProfile.add(Restrictions.eq("idProfile", cp.getProfile()
.getIdProfile()));
criteriaProfile.createAlias("permissions", "permission");
criteriaProfile.setProjection(Property.forName("permission.idPermission"));
// Then we build criteria for permissions, which should match the results given by subcriteria
DetachedCriteria criteria = DetachedCriteria
.forClass(Permission.class);
criteria.add(Property.forName("idPermission").in(criteriaProfile));
List<Permission> permissions = getHibernateTemplate().findByCriteria(
criteria);
set.addAll(permissions);
}
@实体
@表(name=“profile”)
公共类配置文件实现可序列化{
@身份证
@GeneratedValue(策略=GenerationType.AUTO)
@列(name=“idprofile”)
私人长文件;
@列(name=“codprofile”)
私有字符串配置文件;
@列(name=“desprofile”)
私有字符串文件;
@独身癖
@JoinTable(name=“profile\u permission”,joinColumns={@JoinColumn(name=“idProfile”)},inverseJoinColumns={@JoinColumn(name=“idPermission”)})
私有列表权限=新建ArrayList();
/*接球手和接球手*/
}
@实体
@IdClass(CenterProfileId.class)
@表(name=“用户\中心\档案”)
公共类CenterProfile实现可序列化{
@身份证
@许多酮
私人中心;
@身份证
@许多酮
个人资料;
/*接球手和接球手*/
}
@可嵌入
公共类CenterProfileId实现可序列化{
私有静态最终长serialVersionUID=1L;
@许多酮
@JoinColumn(name=“idCenter”)
私人中心;
@许多酮
@JoinColumn(name=“idProfile”)
个人资料;
/*getter、setter、equals、hashcode*/
}
@实体
@表(name=“user”)
公共类用户实现可序列化{
@身份证
@GeneratedValue(策略=GenerationType.AUTO)
@列(name=“idUser”)
专用长idUser;
@列(name=“codUser”)
私有字符串编码用户;
/*其他属性*/
@ManyToMany(fetch=FetchType.EAGER)
@JoinTable(name=“user\u center\u profile”,joinColumns={@JoinColumn(name=“idUser”)},inverseJoinColumns={
@JoinColumn(name=“idCenter”),@JoinColumn(name=“idProfile”)}
私有列表中心sprofileuser=new ArrayList();
@短暂的
私人中心选择中心;
/*能手,二传手*/
}
问题是,在某一点上,我必须收集某个用户拥有的所有权限。。。我尝试了几种方法,但都出现了延迟加载错误、无会话或会话关闭错误、同时加载包时出现问题
我甚至试着写一个简单的SQL查询,但我得到了同样的错误
我看不到为此构建DetachedCriteria的方法,我不知道它是否也会给出一个例外
我的应用程序可以连接到不同的“中心”,当他登录时,他可以选择要连接的中心,但一旦登录,他也可以更改中心。。。所以当他更改它时,我必须重新计算他的权限。。。这就是为什么我需要获得权限列表
如何以适当的方式完成此操作?最后,我构建了如下查询:
@Entity
@Table(name = "profile")
public class Profile implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "idprofile")
private Long idProfile;
@Column(name = "codprofile")
private String codProfile;
@Column(name = "desprofile")
private String desProfile;
@OneToMany
@JoinTable(name = "profile_permission", joinColumns = { @JoinColumn(name = "idProfile") }, inverseJoinColumns = { @JoinColumn(name = "idPermission") })
private List<Permission> permissions = new ArrayList<Permission>();
/* getters and setters */
}
@Entity
@IdClass(CenterProfileId.class)
@Table(name = "user_center_profile")
public class CenterProfile implements Serializable {
@Id
@ManyToOne
private Center center;
@Id
@ManyToOne
private Profile profile;
/* getters and setters */
}
@Embeddable
public class CenterProfileId implements Serializable {
private static final long serialVersionUID = 1L;
@ManyToOne
@JoinColumn(name = "idCenter")
private Center center;
@ManyToOne
@JoinColumn(name = "idProfile")
private Profile profile;
/* getters, setters, equals, hashcode */
}
@Entity
@Table(name = "user")
public class User implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "idUser")
private Long idUser;
@Column(name = "codUser")
private String codUser;
/* other properties */
@ManyToMany(fetch = FetchType.EAGER)
@JoinTable(name = "user_center_profile", joinColumns = { @JoinColumn(name = "idUser") }, inverseJoinColumns = {
@JoinColumn(name = "idCenter"), @JoinColumn(name = "idProfile") })
private List<CenterProfile> centersProfileUser = new ArrayList<CenterProfile>();
@Transient
private Center selectedCenter;
/* getters, setters */
}
HashSet<Permission> set = new HashSet<Permission>();
for (CenterProfile cp : usuario.getCentersProfileUsuario()) {
// First we build subcriteria to return all the permissions for a certain profile
DetachedCriteria criteriaProfile = DetachedCriteria
.forClass(Profile.class);
criteriaProfile.add(Restrictions.eq("idProfile", cp.getProfile()
.getIdProfile()));
criteriaProfile.createAlias("permissions", "permission");
criteriaProfile.setProjection(Property.forName("permission.idPermission"));
// Then we build criteria for permissions, which should match the results given by subcriteria
DetachedCriteria criteria = DetachedCriteria
.forClass(Permission.class);
criteria.add(Property.forName("idPermission").in(criteriaProfile));
List<Permission> permissions = getHibernateTemplate().findByCriteria(
criteria);
set.addAll(permissions);
}
HashSet=newhashset();
对于(CenterProfile cp:usuario.getCentersProfileUserario()){
//首先,我们构建子标准以返回特定概要文件的所有权限
DetachedCriteriaProfile=DetachedCriteria
.forClass(Profile.class);
criteriaProfile.add(Restrictions.eq(“idProfile”,cp.getProfile())
.getIdProfile());
createAlias(“权限”、“权限”);
setProjection(Property.forName(“permission.idPermission”);
//然后,我们为权限建立标准,该标准应与子标准给出的结果相匹配
DetachedCriteria=DetachedCriteria
.forClass(Permission.class);
在(criteriaProfile)中添加(Property.forName(“idPermission”);
列表权限=getHibernateTemplate().findByCriteria(
标准);
set.addAll(权限);
}
如果您正在计算权限,是否考虑过使用Spring Security重新设计并让它管理您的权限?我正在使用Spring Security,但我不知道如何使用它处理中心的更改。。。