Merged CorePersistence Branch

YACOSCore/ejbModule/org/yacos/core/article/Article.java

@@ -3,24 +3,27 @@ package org.yacos.core.article;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collection;
-import javax.persistence.*;
+import javax.persistence.Entity;
-
+import javax.persistence.GeneratedValue;
-
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.JoinTable;
+import javax.persistence.ManyToMany;
+import javax.persistence.ManyToOne;
 import org.yacos.core.conferences.Conference;
 import org.yacos.core.users.User;
 
-//@Entity
+@Entity
 public class Article implements Serializable {
 
-	
-	
 	/**
 	 * 
 	 */
 	private static final long serialVersionUID = 1L;
 
-//	@Id
+	@Id
-//	@GeneratedValue(strategy=GenerationType.AUTO)
+	@GeneratedValue(strategy=GenerationType.AUTO)
 	private int id;
 	private String title;
 	private String topic;
@@ -31,30 +34,30 @@ public class Article implements Serializable {
 	/**
 	 * The conference this article has been submitted for
 	 */
-	//@ManyToOne(targetEntity=Conference.class)
+	@ManyToOne(targetEntity=Conference.class)
-	//@JoinColumn(name="conference_id",nullable=false)
+	@JoinColumn(name="conference_id",nullable=false)
 	private Conference conference;
+	
 	/**
 	 * The referees reviewing this article
 	 */
-	/*@ManyToMany(targetEntity=User.class)
+	@ManyToMany(targetEntity=User.class)
 	@JoinTable(
 		name="articles_referees_map",
 		joinColumns=@JoinColumn(name="user_id"),
 		inverseJoinColumns=@JoinColumn(name="article_id")
-	)*/
+	)
-	
 	private Collection<User> referees;
 	
 	/**
 	 * The PC Members responsible for this article evaluation
 	 */
-	/*@ManyToMany(targetEntity=User.class)
+	@ManyToMany(targetEntity=User.class)
 	@JoinTable(
 		name="articles_pcmembers_map",
 		joinColumns=@JoinColumn(name="user_id"),
 		inverseJoinColumns=@JoinColumn(name="article_id")
-	)*/
+	)
 	private Collection<User> pcMembers;
 	
 	private int state;
@@ -65,8 +68,6 @@ public class Article implements Serializable {
 
 	public Article() {
 		secondaryAuthors = new ArrayList<String>();
-		referees = new ArrayList<User>();
-		pcMembers = new ArrayList<User>();
 	}
 
 	public Article(int reference, String title, String topic,
@@ -81,8 +82,8 @@ public class Article implements Serializable {
 		this.state = state;
 	}
 
-	//@Id
+	@Id
-	//@GeneratedValue(strategy=GenerationType.AUTO)
+	@GeneratedValue(strategy=GenerationType.AUTO)
 	public int getId() {
 		return id;
 	}
@@ -139,26 +140,47 @@ public class Article implements Serializable {
 		this.state = state;
 	}
 	
-	/*@ManyToMany(targetEntity=User.class)
+	@ManyToMany(targetEntity=User.class)
 	@JoinTable(
 		name="articles_referees_map",
 		joinColumns=@JoinColumn(name="user_id"),
 		inverseJoinColumns=@JoinColumn(name="article_id")
-	)*/
+	)
 	public Collection<User> getReferees(){
-		return this.referees;
+		return referees;
-		//return em.createQuery("SELECT u FROM User u").getResultList();
 	}
 	
-	/*@ManyToMany(targetEntity=User.class)
+	/**
+	 * @param referees the referees to set
+	 */
+	@ManyToMany(targetEntity=User.class)
+	@JoinTable(
+		name="articles_referees_map",
+		joinColumns=@JoinColumn(name="user_id"),
+		inverseJoinColumns=@JoinColumn(name="article_id")
+	)
+	public void setReferees(Collection<User> referees) {
+		this.referees = referees;
+	}
+
+	@ManyToMany(targetEntity=User.class)
 	@JoinTable(
 		name="articles_pcmembers_map",
 		joinColumns=@JoinColumn(name="user_id"),
 		inverseJoinColumns=@JoinColumn(name="article_id")
-	)*/
+	)
 	public Collection<User> getPCMembers(){
 		return pcMembers;
 	}
+	@ManyToMany(targetEntity=User.class)
+	@JoinTable(
+		name="articles_pcmembers_map",
+		joinColumns=@JoinColumn(name="user_id"),
+		inverseJoinColumns=@JoinColumn(name="article_id")
+	)
+	public void setPCMembers(Collection<User> pcMembers){
+		this.pcMembers = pcMembers;
+	}
 	
 	public void assignToPCMember(User pcMember){
 		// TODO : Checking if the User is a pcMember for this conference (not implemented yet)
@@ -179,12 +201,12 @@ public class Article implements Serializable {
 		}
 	}
 	
-	//@ManyToOne(targetEntity=Conference.class)
+	@ManyToOne(targetEntity=Conference.class)
 	public Conference getConference(){
 		return conference;
 	}
 	
-	//@ManyToOne(targetEntity=Conference.class)
+	@ManyToOne(targetEntity=Conference.class)
 	public void setConference(Conference conference){
 		this.conference = conference;
 	}

YACOSCore/ejbModule/org/yacos/core/article/ArticleManagerBean.java

@@ -1,8 +1,6 @@
 package org.yacos.core.article;
 
 import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.Collection;
 import java.util.List;
 
 import javax.ejb.Stateless;
@@ -22,49 +20,38 @@ public class ArticleManagerBean implements IArticleManager, Serializable {
 	@PersistenceContext
 	EntityManager em;
 
-	List<Article> articles;
-	
 	public ArticleManagerBean() {
-		articles = new ArrayList<Article>();
+		
 	}
 
 	public void addArticle(Article a) {
-		//em.persist(a);
+		em.persist(a);
-		articles.add(a);
 	}
 
 	@SuppressWarnings("unchecked")
 	public List<Article> getArticles() {
-		//return em.createQuery("from Article a ORDER BY a.title").getResultList();
+		return em.createQuery("from Article a ORDER BY a.title").getResultList();
-		return articles;
 	}
 
 	public void updateArticle(Integer id, Article newArticle) {
 		removeArticle(getArticle(id));
 		newArticle.setId(id);
 		addArticle(newArticle);
-		//em.flush();
+		em.flush();
 	}
 
 	public void removeArticle(Article a) {
-		//em.remove(a);
+		em.remove(a);
-		//em.flush();
+		em.flush();
-		articles.remove(a);
 	}
 
 	public Article getArticle(Integer id) {
-		//return em.find(Article.class, id);
+		return em.find(Article.class, id);
-		for (Article a : articles) {
-			if(a.getId()== id){
-				return a;
-			}
-		}
-		return null;
 	}
 	
 	public void assignArticleToPCMember(Article article,User pcMember){
 		article.assignToPCMember(pcMember);
-		//em.flush();
+		em.flush();
 	}
 
 	public List<User> getArticlePCMembers(Article article) {

YACOSCore/ejbModule/org/yacos/core/article/Delegation.java

@@ -3,9 +3,9 @@
  */
 package org.yacos.core.article;
 
-import java.io.Serializable;
-
 import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
 import javax.persistence.Id;
 import javax.persistence.JoinColumn;
 import javax.persistence.ManyToOne;
@@ -15,26 +15,43 @@ import org.yacos.core.users.User;
  * @author christiancorsano
  *
  */
-//@Entity
+@Entity
-public class Delegation implements Serializable {
+public class Delegation {
-	//@ManyToOne(targetEntity=Article.class)
+	/**
-	//@JoinColumn(name="article_id")
+	 * Id mandatory in every entity.
-	
+	 */
-	
+	@Id
+	@GeneratedValue(strategy=GenerationType.AUTO)
+	private Integer id;
+	@ManyToOne(targetEntity=Article.class)
+	@JoinColumn(name="article_id")
 	private Article article;
-	//@ManyToOne(targetEntity=User.class)
+	@ManyToOne(targetEntity=User.class)
-	//@JoinColumn(name="pcmember_id")
+	@JoinColumn(name="pcmember_id")
 	private User pcMember;
-	//@ManyToOne(targetEntity=User.class)
+	@ManyToOne(targetEntity=User.class)
-	//@JoinColumn(name="referee_id")
+	@JoinColumn(name="referee_id")
 	private User referee;
 	
+	/**
+	 * @return the id
+	 */
+	public Integer getId() {
+		return id;
+	}
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Integer id) {
+		this.id = id;
+	}
+	
 	/**
 	 * Article being evaluated through this delegation
 	 * @return the article
 	 */
-	//@ManyToOne(targetEntity=Article.class)
+	@ManyToOne(targetEntity=Article.class)
-	//@JoinColumn(name="article_id")
+	@JoinColumn(name="article_id")
 	public Article getArticle() {
 		return article;
 	}
@@ -42,8 +59,8 @@ public class Delegation implements Serializable {
 	 * Define the article evaluated through this delegation
 	 * @param article the article to set
 	 */
-	//@ManyToOne(targetEntity=Article.class)
+	@ManyToOne(targetEntity=Article.class)
-	//@JoinColumn(name="article_id")
+	@JoinColumn(name="article_id")
 	public void setArticle(Article article) {
 		this.article = article;
 	}
@@ -51,8 +68,8 @@ public class Delegation implements Serializable {
 	 * PCMember that delegated the article to a referee
 	 * @return the pcMember
 	 */
-	//@ManyToOne(targetEntity=User.class)
+	@ManyToOne(targetEntity=User.class)
-	//@JoinColumn(name="pcmember_id")
+	@JoinColumn(name="pcmember_id")
 	public User getPcMember() {
 		return pcMember;
 	}
@@ -60,8 +77,8 @@ public class Delegation implements Serializable {
 	 * Set PCMember that delegated the article to a referee
 	 * @param pcMember the pcMember to set
 	 */
-	//@ManyToOne(targetEntity=User.class)
+	@ManyToOne(targetEntity=User.class)
-	//@JoinColumn(name="pcmember_id")
+	@JoinColumn(name="pcmember_id")
 	public void setPcMember(User pcMember) {
 		this.pcMember = pcMember;
 	}
@@ -69,8 +86,8 @@ public class Delegation implements Serializable {
 	 * Get the referee that will evaluate this article
 	 * @return the referee
 	 */
-	//@ManyToOne(targetEntity=User.class)
+	@ManyToOne(targetEntity=User.class)
-	//@JoinColumn(name="referee_id")
+	@JoinColumn(name="referee_id")
 	public User getReferee() {
 		return referee;
 	}
@@ -78,12 +95,11 @@ public class Delegation implements Serializable {
 	 * Get 
 	 * @param referee the referee to set
 	 */
-	//@ManyToOne(targetEntity=User.class)
+	@ManyToOne(targetEntity=User.class)
-	//@JoinColumn(name="referee_id")
+	@JoinColumn(name="referee_id")
 	public void setReferee(User referee) {
 		this.referee = referee;
 	}
 	
 	
-	
 }

YACOSCore/ejbModule/org/yacos/core/article/IArticleManager.java

@@ -3,8 +3,6 @@ package org.yacos.core.article;
 import java.util.List;
 import javax.ejb.Remote;
 
-import org.yacos.core.conferences.Conference;
-
 @Remote
 public interface IArticleManager {
 	public Article getArticle(Integer id);

YACOSCore/ejbModule/org/yacos/core/article/Preference.java

@@ -4,7 +4,11 @@
 package org.yacos.core.article;
 
 import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
 import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
 
 import org.yacos.core.users.User;
 
@@ -12,54 +16,67 @@ import org.yacos.core.users.User;
  * @author christiancorsano
  *
  */
-//@Entity
+@Entity
 public class Preference {
-	//@ManyToOne(targetEntity=User.class)
+	/**
-	//@JoinColumn(name="pcmember_id",nullable=false)
+	 * Id mandatory in every entity.
-	
+	 */
-	//@Id
+	@Id
-	private int id;
+	@GeneratedValue(strategy=GenerationType.AUTO)
-	
+	private Integer id;
+	@ManyToOne(targetEntity=User.class)
+	@JoinColumn(name="pcmember_id",nullable=false)
 	private User pcMember;
-	//@ManyToOne(targetEntity=Article.class)
+	@ManyToOne(targetEntity=Article.class)
-	//@JoinColumn(name="article_id",nullable=false)
+	@JoinColumn(name="article_id",nullable=false)
 	private Article article;
+	
+
+	/**
+	 * @return the id
+	 */
+	@Id
+	public Integer getId() {
+		return id;
+	}
+	/**
+	 * @param id the id to set
+	 */
+	@Id
+	public void setId(Integer id) {
+		this.id = id;
+	}
+	
 	/**
 	 * @return the pcMember
 	 */
-	//@ManyToOne(targetEntity=User.class)
+	@ManyToOne(targetEntity=User.class)
-	//@JoinColumn(name="pcmember_id",nullable=false)
+	@JoinColumn(name="pcmember_id",nullable=false)
 	public User getPcMember() {
 		return pcMember;
 	}
 	/**
 	 * @param pcMember the pcMember to set
 	 */
-	//@ManyToOne(targetEntity=User.class)
+	@ManyToOne(targetEntity=User.class)
-	//@JoinColumn(name="pcmember_id",nullable=false)
+	@JoinColumn(name="pcmember_id",nullable=false)
 	public void setPcMember(User pcMember) {
 		this.pcMember = pcMember;
 	}
 	/**
 	 * @return the article
 	 */
-	//@ManyToOne(targetEntity=Article.class)
+	@ManyToOne(targetEntity=Article.class)
-	//@JoinColumn(name="article_id",nullable=false)
+	@JoinColumn(name="article_id",nullable=false)
 	public Article getArticle() {
 		return article;
 	}
 	/**
 	 * @param article the article to set
 	 */
-	//@ManyToOne(targetEntity=Article.class)
+	@ManyToOne(targetEntity=Article.class)
-	//@JoinColumn(name="article_id",nullable=false)
+	@JoinColumn(name="article_id",nullable=false)
 	public void setArticle(Article article) {
 		this.article = article;
 	}
-	public int getId() {
-		return id;
-	}
-	public void setId(int id) {
-		this.id = id;
-	}
 }

YACOSCore/ejbModule/org/yacos/core/conferences/ConferenceManagerBean.java

@@ -1,45 +1,36 @@
 package org.yacos.core.conferences;
 
-import java.util.HashMap;
-import java.util.List;
-
 import javax.ejb.Stateless;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;
 
 import org.yacos.core.article.Article;
+import org.yacos.core.article.ArticleManagerBean;
 
 @Stateless
 public class ConferenceManagerBean implements IConferenceManager {
 	@PersistenceContext
     EntityManager em;
 
-	private List<Conference> conferences;
-	
 	public void addConference(Conference conf) {
-		//em.persist(conf);
+		em.persist(conf);
-		conferences.add(conf);
 	}
 
 	public List<Conference> getConferences() {
-		 //return em.createQuery("from Conference conf ORDER BY conf.id").getResultList();
+		 return em.createQuery("from Conference conf ORDER BY conf.id").getResultList();
-		return conferences;
 	}
 
 	public Conference getConference(Integer id) {
-		 //return em.find(Conference.class, id);
+		 return em.find(Conference.class, id);
-		for (Conference c : conferences) {
-			if(c.getId()== id){
-				return c;
-			}
-		}
-		return null;
 	}
 
 	public void remove(Integer id) {
 		Conference conf=this.getConference(id);
-	    //em.remove(conf);
+	    em.remove(conf);
-		conferences.remove(conf);
 	}
 
 	public void update(Conference newC, Integer id) { 
@@ -48,7 +39,7 @@ public class ConferenceManagerBean implements IConferenceManager {
 	}
 
 	public List<Article> getArticles(Integer conference_id) {
-		return getConference(conference_id).getArticles();
+		return new ArrayList<Article>(getConference(conference_id).getArticles());
 	}
 
 }

YACOSCore/ejbModule/org/yacos/core/evaluation/Criterion.java

@@ -0,0 +1,105 @@
+/**
+ * 
+ */
+package org.yacos.core.evaluation;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+
+import org.yacos.core.conferences.Conference;
+
+/**
+ * @author christiancorsano
+ *
+ */
+@Entity
+public class Criterion {
+	@Id
+	@GeneratedValue(strategy=GenerationType.AUTO)
+	private Integer id;
+	private String name;
+	private Integer min;
+	private Integer max;
+	
+	@ManyToOne(targetEntity=Conference.class)
+	@JoinColumn(name="conference_id",nullable=false)
+	private Conference conference;
+	
+	@ManyToOne(targetEntity=Conference.class)
+	@JoinColumn(name="conference_id",nullable=false)
+	public Conference getConference(){
+		return conference;
+	}
+	
+	/**
+	 * @param conference the conference to set
+	 */
+	@ManyToOne(targetEntity=Conference.class)
+	@JoinColumn(name="conference_id",nullable=false)
+	public void setConference(Conference conference) {
+		this.conference = conference;
+	}
+
+	/**
+	 * @return the id
+	 */
+	public Integer getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Integer id) {
+		this.id = id;
+	}
+
+
+
+	/**
+	 * @return the name of this criterion
+	 */
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * @param name the name of this criterion
+	 */
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	/**
+	 * @return the minimum value for this criterion
+	 */
+	public Integer getMin() {
+		return min;
+	}
+
+	/**
+	 * @param min the minimum value for this criterion
+	 */
+	public void setMin(Integer min) {
+		this.min = min;
+	}
+
+	/**
+	 * @return the maximum value for this criterion
+	 */
+	public Integer getMax() {
+		return max;
+	}
+
+	/**
+	 * @param max the maximum value for this criterion
+	 */
+	public void setMax(Integer max) {
+		this.max = max;
+	}
+	
+}

YACOSCore/ejbModule/org/yacos/core/evaluation/EvaluationManager.java

@@ -0,0 +1,12 @@
+/**
+ * 
+ */
+package org.yacos.core.evaluation;
+
+/**
+ * @author christiancorsano
+ *
+ */
+public class EvaluationManager implements IEvaluationManager {
+
+}

YACOSCore/ejbModule/org/yacos/core/evaluation/IEvaluationManager.java

@@ -0,0 +1,12 @@
+/**
+ * 
+ */
+package org.yacos.core.evaluation;
+
+/**
+ * @author christiancorsano
+ *
+ */
+public interface IEvaluationManager {
+
+}

YACOSCore/ejbModule/org/yacos/core/evaluation/Rating.java

@@ -0,0 +1,89 @@
+/**
+ * 
+ */
+package org.yacos.core.evaluation;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+
+/**
+ * @author christiancorsano
+ *
+ */
+@Entity
+public class Rating {
+	@Id
+	@GeneratedValue(strategy=GenerationType.AUTO)
+	private Integer id;
+	private Integer value;
+	@ManyToOne(targetEntity=Criterion.class)
+	@JoinColumn(name="criterion_id",nullable=false)
+	private Criterion criterion;
+	@ManyToOne(targetEntity=Report.class)
+	@JoinColumn(name="report_id",nullable=false)
+	private Report report;
+	/**
+	 * @return the id
+	 */
+	@Id
+	public Integer getId() {
+		return id;
+	}
+	/**
+	 * @param id the id to set
+	 */
+	@Id
+	public void setId(Integer id) {
+		this.id = id;
+	}
+	/**
+	 * @return the value
+	 */
+	public Integer getValue() {
+		return value;
+	}
+	/**
+	 * @param value the value to set
+	 */
+	public void setValue(Integer value) {
+		this.value = value;
+	}
+	/**
+	 * @return the criterion
+	 */
+	@ManyToOne(targetEntity=Criterion.class)
+	@JoinColumn(name="criterion_id",nullable=false)
+	public Criterion getCriterion() {
+		return criterion;
+	}
+	/**
+	 * @param criterion the criterion to set
+	 */
+	@ManyToOne(targetEntity=Criterion.class)
+	@JoinColumn(name="criterion_id",nullable=false)
+	public void setCriterion(Criterion criterion) {
+		this.criterion = criterion;
+	}
+	/**
+	 * @return the report
+	 */
+	@ManyToOne(targetEntity=Report.class)
+	@JoinColumn(name="report_id",nullable=false)
+	public Report getReport() {
+		return report;
+	}
+	/**
+	 * @param report the report to set
+	 */
+	@ManyToOne(targetEntity=Report.class)
+	@JoinColumn(name="report_id",nullable=false)
+	public void setReport(Report report) {
+		this.report = report;
+	}
+	
+	
+}

YACOSCore/ejbModule/org/yacos/core/evaluation/Report.java

@@ -0,0 +1,129 @@
+/**
+ * 
+ */
+package org.yacos.core.evaluation;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+
+import org.yacos.core.article.Article;
+import org.yacos.core.users.User;
+
+/**
+ * @author christiancorsano
+ *
+ */
+@Entity
+public class Report {
+	@Id
+	@GeneratedValue(strategy=GenerationType.AUTO)
+	private Integer id;
+	private String commentPCMember;
+	private String commentAuthor;
+	@OneToMany(targetEntity=Rating.class,mappedBy="report")
+	private Collection<Rating> ratings;
+	@ManyToOne(targetEntity=User.class)
+	@JoinColumn(name="referee_id",nullable=false)
+	private User referee;
+	@ManyToOne(targetEntity=Article.class)
+	@JoinColumn(name="article_id",nullable=false)
+	private Article article;
+	/**
+	 * @return the id
+	 */
+	@Id
+	public Integer getId() {
+		return id;
+	}
+	/**
+	 * @param id the id to set
+	 */
+	@Id
+	public void setId(Integer id) {
+		this.id = id;
+	}
+	/**
+	 * @return the commentPCMember
+	 */
+	public String getCommentPCMember() {
+		return commentPCMember;
+	}
+	/**
+	 * @param commentPCMember the commentPCMember to set
+	 */
+	public void setCommentPCMember(String commentPCMember) {
+		this.commentPCMember = commentPCMember;
+	}
+	/**
+	 * @return the commentAuthor
+	 */
+	public String getCommentAuthor() {
+		return commentAuthor;
+	}
+	/**
+	 * @param commentAuthor the commentAuthor to set
+	 */
+	public void setCommentAuthor(String commentAuthor) {
+		this.commentAuthor = commentAuthor;
+	}
+	/**
+	 * @return the referee
+	 */
+	@ManyToOne(targetEntity=User.class)
+	@JoinColumn(name="referee_id",nullable=false)
+	public User getReferee() {
+		return referee;
+	}
+	/**
+	 * @param referee the referee to set
+	 */
+	@ManyToOne(targetEntity=User.class)
+	@JoinColumn(name="referee_id",nullable=false)
+	public void setReferee(User referee) {
+		this.referee = referee;
+	}
+	/**
+	 * @return the article
+	 */
+	@ManyToOne(targetEntity=Article.class)
+	@JoinColumn(name="article_id",nullable=false)
+	public Article getArticle() {
+		return article;
+	}
+	/**
+	 * @param article the article to set
+	 */
+	@ManyToOne(targetEntity=Article.class)
+	@JoinColumn(name="article_id",nullable=false)
+	public void setArticle(Article article) {
+		this.article = article;
+	}
+	
+	public void addRating(Rating rating){
+		ratings.add(rating);
+	}
+	
+	/**
+	 * @return the ratings
+	 */
+	@OneToMany(targetEntity=Rating.class,mappedBy="report")
+	public Collection<Rating> getRatings() {
+		return ratings;
+	}
+	/**
+	 * @param ratings the ratings to set
+	 */
+	@OneToMany(targetEntity=Rating.class,mappedBy="report")
+	public void setRatings(ArrayList<Rating> ratings) {
+		this.ratings = ratings;
+	}
+	
+}

YACOSCore/ejbModule/org/yacos/core/users/Role.java

@@ -1,6 +1,18 @@
 package org.yacos.core.users;
 
+import javax.persistence.Basic;
+import javax.persistence.Entity;
+import javax.persistence.EnumType;
+import javax.persistence.Enumerated;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+
 import org.yacos.core.conferences.Conference;
+import org.yacos.core.users.RoleType.RoleTypeEnum;
 
 /**
  * An role of a given type (author,chairman,PCmember or referee)
@@ -8,26 +20,47 @@ import org.yacos.core.conferences.Conference;
  * @author christiancorsano
  *
  */
+@Entity
 public class Role {
+	@Id
+	@GeneratedValue(strategy=GenerationType.AUTO)
+	private Integer id;
 	/**
 	 * User for which this role is defined
 	 */
+	@ManyToOne(targetEntity=User.class,optional=false)
+	@JoinColumn(name="user_id",nullable=false)
 	private User user;
 	/**
 	 * Conference for which this role is defined
 	 */
+	@ManyToOne(targetEntity=Conference.class,optional=false)
+	@JoinColumn(name="conference_id",nullable=false)
 	private Conference conference;
 	/**
 	 * The type of this role
 	 */
-	private RoleType type;
+	@Enumerated(EnumType.ORDINAL)
+	private RoleTypeEnum type;
 	
-	public Role(RoleType type,User user, Conference conference) {
+	public Role(RoleTypeEnum type,User user, Conference conference) {
 		super();
 		setType(type);
 		setUser(user);
 		setConference(conference);
 	}
+	/**
+	 * @return the id
+	 */
+	public Integer getId() {
+		return id;
+	}
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Integer id) {
+		this.id = id;
+	}
 	/**
 	 * @return the user who plays this role
 	 */
@@ -55,13 +88,13 @@ public class Role {
 	/**
 	 * @return the type of this role
 	 */
-	public RoleType getType() {
+	public RoleTypeEnum getType() {
 		return type;
 	}
 	/**
 	 * @param type the type of this role
 	 */
-	public void setType(RoleType type) {
+	public void setType(RoleTypeEnum type) {
 		this.type = type;
 	}
 	

YACOSCore/ejbModule/org/yacos/core/users/RoleType.java

@@ -8,6 +8,10 @@ package org.yacos.core.users;
  *
  */
 public class RoleType {
+	// TODO : see what we do with this class
+	public enum RoleTypeEnum {
+		AUTHOR,CHAIRMAN,PCMEMBER,REFEREE
+	}
 	/**
 	 * Author constant role
 	 */

YACOSCore/ejbModule/org/yacos/core/users/UsersManager.java

@@ -0,0 +1,33 @@
+/**
+ * 
+ */
+package org.yacos.core.users;
+
+import java.util.Collection;
+
+/**
+ * @author christiancorsano
+ *
+ */
+public class UsersManager {
+	public Collection<User> getUsers(){
+		// TODO
+		return null;
+	}
+	
+	/**
+	 * Adds a user into the system
+	 * @param user
+	 */
+	public void addUser(User user){
+		// TODO
+	}
+	
+	/**
+	 * Removes a user from the system
+	 * @param user
+	 */
+	public void removeUser(User user){
+		// TODO
+	}
+}