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 Post subject: Criteria sur une relation Many to Many
PostPosted: Wed Jun 22, 2016 10:11 am 
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Joined: Wed Jun 22, 2016 8:02 am
Posts: 3
Bonjour,
J'ai deux tables (PERSON et PROJECT) qui sont reliées par une table de liaison (PROJECT_PERSON)

PERSON
PK person_id
Person_name

PROJECT
PK project_id
Project_name

Table de relation PROJECT_PERSON :
PROJECT_PERSON
PK(project_id, person_id, role_id)

J'ai également une autre table ROLE qui liste tous les roles possibles
ROLE
PK role_id
role_name


Voici mon fichier de config hibernate :
Code:
<class name="com.capgemini.deliveryreport.entities.Project" table="PROJECT">
      <id name="projectId" column="PROJECT_ID" type="int" unsaved-value="null">
         <generator class="sequence">
            <param name="sequence">PROJECT_PROJECT_ID_seq</param>
         </generator>
      </id>       
       <set name="projectsHistory" table="PROJECT_HISTORY" inverse="true" lazy="true" >
          <key column="PROJECT_ID" />
          <one-to-many class="com.capgemini.deliveryreport.entities.ProjectHistory"/>
       </set>
       <set name="persons" table="PROJECT_PERSON" inverse="false" lazy="true" cascade="all">
          <key>
             <column name="PROJECT_ID" not-null="true"/>
          </key>
          <many-to-many class="com.capgemini.deliveryreport.entities.Person">
            <column name="PERSON_ID" not-null="true"/>
         </many-to-many>       
       </set>
       
       <property name="domain" column="DOMAIN" type="string" />
       <property name="customer_name" column="CUSTOMER_NAME" type="string" />
      <property name="name" column="NAME" type="string" />
      <property name="gfs" column="GFS" type="int" />
      <property name="status" column="STATUS" type="short" />
      <property name="trend" column="TREND" type="short" />
      <property name="planning" column="PLANNING" type="short" />
      <property name="finance" column="FINANCE" type="short" />
      <property name="customer" column="CUSTOMER" type="short" />
      <property name="human" column="HUMAN" type="short" />
      <property name="international" column="INTERNATIONAL" type="short" />
      <property name="comment" column="COMMENT" type="string" />      
      
      <property name="actions" column="ACTIONS" type="string" />
      <property name="co_div" column="CO_DIV" type="string" />
      <property name="suivi" column="SUIVI" type="string" />
      
      <property name="person_id" column="PERSON_ID" type="int" />
      <property name="last_edit" column="LAST_EDIT" type="calendar" />
      <property name="week_num" column="WEEK_NUM" type="calendar" />
   </class>

<class name="com.capgemini.deliveryreport.entities.Person" table="PERSON">
      <id name="personId" column="PERSON_ID" type="int" unsaved-value="null">
         <generator class="sequence">
            <param name="sequence">PERSON_PERSON_ID_seq</param>
         </generator>      
      </id>   
      <many-to-one name="profil" class="com.capgemini.deliveryreport.entities.Profil" >
         <column name="PROFIL_ID" not-null="true"/>
      </many-to-one>      
      <many-to-one name="role" class="com.capgemini.deliveryreport.entities.Role" >
         <column name="ROLE_ID" not-null="true"/>
      </many-to-one>         
      
      <set name="projects" table="PROJECT_PERSON" inverse="false" lazy="true" cascade="all">
          <key>
             <column name="PERSON_ID" not-null="true"/>
          </key>
          <many-to-many class="com.capgemini.deliveryreport.entities.Project">
            <column name="PROJECT_ID" not-null="true"/>
         </many-to-many>       
       </set>
             
      <property name="personName" column="PERSON_NAME" type="string" />
      <property name="firstName" column="FIRST_NAME" type="string" />
      <property name="lastName" column="LAST_NAME" type="string" />
      <property name="password" column="PASSWORD" type="string" />      
   </class>
<class name="com.capgemini.deliveryreport.entities.Role" table="ROLE">
      <id name="roleId" column="ROLE_ID" type="int" unsaved-value="null">
         <generator class="sequence">
            <param name="sequence">ROLE_ROLE_ID_seq</param>
         </generator>      
      </id>
      <property name="roleName" column="ROLE_NAME" type="string" />   
      <set name="persons" table="PERSON" inverse="true" lazy="true" >
          <key column="PERSON_ID" />
          <one-to-many class="com.capgemini.deliveryreport.entities.Person"/>
       </set>
   </class>


Pour obtenir la liste de tous les projets associés à une personne, j'utilise l'API criteria

Code:
   public List <Project> getAllProject(int person_id, int role_id) {   
      Session session = sessionFactory.getCurrentSession();
      
      Criteria criteria = session.createCriteria(Project.class);
      criteria.addOrder(Order.desc("last_edit"));   

      //association many-to-many Set<Person> persons
      Criteria criteriaP = criteria.createCriteria("persons");
      criteriaP.add(Restrictions.eq("personId", person_id));   
      
      List<Project> listAllProject = criteria.list();
      return listAllProject;
   }

Jusque là, c'est bon pour moi.
Seulement voilà je voudrais rajouter une condition sur la colonne <role_id> de la table PROJECT_PERSON :
role_id = yy par exemple

Sachant que je n'ai pas défini de classe pour la table <PROJECT_PERSON> dans mon projet, comment accéder a la colonne <role_id> avec les criteria ?

Merci


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