/**
* File ./src/main/java/de/lemo/dms/db/mapping/CollaborativeLog.java
* Lemo-Data-Management-Server for learning analytics.
* Copyright (C) 2015
* Leonard Kappe, Andreas Pursian, Sebastian Schwarzrock, Boris Wenzlaff
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
**/
/**
* File ./main/java/de/lemo/dms/db/mapping/CollaborativeLog.java
* Date 2014-02-04
* Project Lemo Learning Analytics
*/
package de.lemo.dms.db.mapping;
import java.util.Map;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.Lob;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import javax.persistence.Transient;
import de.lemo.dms.db.mapping.abstractions.ILog;
import de.lemo.dms.db.mapping.abstractions.IMapping;
/**
* This class represents the log table for the collaborative_Log objects.
* @author Sebastian Schwarzrock
*/
@Entity
@Table(name = "lemo_collaboration_log")
public class CollaborationLog implements IMapping, ILog{
private long id;
private Course course;
private User user;
private LearningObj learning;
private Long timestamp;
private String text;
private String action;
private CollaborationLog referrer;
private static Long PREFIX = 15L;
@Override
public boolean equals(final IMapping o) {
if (!(o instanceof CollaborationLog)) {
return false;
}
if ((o.getId() == this.getId()) && (o instanceof CollaborationLog)) {
return true;
}
return false;
}
@Override
public int hashCode() {
return (int) id;
}
@Override
public int compareTo(final ILog arg0) {
ILog s;
try {
s = arg0;
} catch (final Exception e)
{
return 0;
}
if (s != null) {
if (this.timestamp > s.getTimestamp()) {
return 1;
}
if (this.timestamp < s.getTimestamp()) {
return -1;
}
}
return 0;
}
@Id
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="course_id")
public Course getCourse() {
return course;
}
public void setCourse(Course course) {
this.course = course;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="user_id")
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="learning_id")
public LearningObj getLearning() {
return learning;
}
public void setLearning(LearningObj learningObject) {
this.learning = learningObject;
}
@Column(name="timestamp")
public Long getTimestamp() {
return timestamp;
}
public void setTimestamp(Long timestamp) {
this.timestamp = timestamp;
}
//@Lob
@Column(name="text")
public String getText() {
return text;
}
public void setText(String text) {
if( text != null && text.length() > 255)
text = text.substring(0, 254);
this.text = text;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="parent_id")
public CollaborationLog getReferrer() {
return referrer;
}
public void setReferrer(CollaborationLog referrer) {
this.referrer = referrer;
}
public void setReferrer(Long id, final Map<Long, CollaborationLog> collaborationLogs)
{
if (collaborationLogs.get(id) != null)
{
this.referrer = collaborationLogs.get(id);
}
}
public void setCourse(final long course, final Map<Long, Course> courses,
final Map<Long, Course> oldCourses) {
if (courses.get(course) != null)
{
this.course = courses.get(course);
courses.get(course).addCollaborativeLog(this);
}
if ((this.course == null) && (oldCourses.get(course) != null))
{
this.course = oldCourses.get(course);
oldCourses.get(course).addCollaborativeLog(this);
}
}
public void setUser(final long user, final Map<Long, User> users,
final Map<Long, User> oldUsers) {
if (users.get(user) != null)
{
this.user = users.get(user);
users.get(user).addCollaborativeLog(this);
}
if ((this.user == null) && (oldUsers.get(user) != null))
{
this.user = oldUsers.get(user);
oldUsers.get(user).addCollaborativeLog(this);
}
}
public void setLearning(final long learningId, final Map<Long, LearningObj> learningobjects,
final Map<Long, LearningObj> oldLearningObjects) {
if (learningobjects.get(learningId) != null)
{
this.learning = learningobjects.get(learningId);
learningobjects.get(learningId).addCollaborationLog(this);
}
if ((this.learning == null) && (oldLearningObjects.get(learningId) != null))
{
this.learning = oldLearningObjects.get(learningId);
oldLearningObjects.get(learningId).addCollaborationLog(this);
}
}
@Override
@Transient
public long getPrefix() {
return PREFIX;
}
@Override
@Transient
public String getType() {
return "COLLABORATION";
}
/**
* @return the action
*/
@Column(name="action")
public String getAction() {
return action;
}
/**
* @param action the action to set
*/
public void setAction(String action) {
this.action = action;
}
@Transient
@Override
public Long getLearningId() {
return this.learning.getId();
}
}