/**
* File ./src/main/java/de/lemo/dms/db/mapping/CourseLogMining.java
* Lemo-Data-Management-Server for learning analytics.
* Copyright (C) 2013
* 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/CourseLogMining.java
* Date 2013-01-24
* 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.ManyToOne;
import javax.persistence.Table;
import javax.persistence.Transient;
import de.lemo.dms.db.mapping.abstractions.IMappingClass;
/**
* This class represents the log table for the course object.
* @author Sebastian Schwarzrock
*/
@Entity
@Table(name = "course_log")
public class CourseLogMining implements IMappingClass, Comparable<CourseLogMining> {
private long id;
private CourseMining course;
private UserMining user;
private String action;
private long timestamp;
private Long duration;
private Long platform;
@Override
public int compareTo(final CourseLogMining arg0) {
CourseLogMining 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;
}
@Override
public boolean equals(final IMappingClass o)
{
if (o != null) {} else return false;
if (!(o instanceof CourseLogMining)) {
return false;
}
if ((o.getId() == this.getId()) && (o instanceof CourseLogMining)) {
return true;
}
return false;
}
@Override
public int hashCode() {
return (int) id;
}
@Column(name="duration")
public Long getDuration() {
return this.duration;
}
public void setDuration(final Long duration) {
this.duration = duration;
}
@Transient
public String getTitle()
{
return this.course == null ? null : this.course.getTitle();
}
@Transient
public Long getLearnObjId()
{
return this.course == null ? null : this.course.getId();
}
/**
* standard getter for the attribute id
*
* @return the identifier of the log entry
*/
@Override
@Id
public long getId() {
return this.id;
}
/**
* standard setter for the attribute id
*
* @param id
* the identifier of the log entry
*/
public void setId(final long id) {
this.id = id;
}
/**
* standard getter for the attribute timestamp
*
* @return the timestamp the action did occur
*/
@Column(name="timestamp")
public long getTimestamp() {
return this.timestamp;
}
/**
* standard setter for the attribute timestamp
*
* @param timestamp
* the timestamp the action did occur
*/
public void setTimestamp(final long timestamp) {
this.timestamp = timestamp;
}
/**
* standard getter for the attribute action
*
* @return the action which occur
*/
@Column(name="action")
public String getAction() {
return this.action;
}
/**
* standard setter for the attribute action
*
* @param action
* the action which occur
*/
public void setAction(final String action) {
this.action = action;
}
/**
* standard getter for the attribute course
*
* @return the course in which the action takes place
*/
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="course_id")
public CourseMining getCourse() {
return this.course;
}
/**
* standard setter for the attribute course
*
* @param course
* the course in which the action takes place
*/
public void setCourse(final CourseMining course) {
this.course = course;
}
/**
* parameterized setter for the attribute course
*
* @param course
* the id of the course in which the action takes place
* @param courseMining
* a list of new added courses, which is searched for the course with the id submitted in the course
* parameter
* @param oldCourseMining
* a list of course in the miningdatabase, which is searched for the course with the id submitted in the
* course parameter
*/
public void setCourse(final long course, final Map<Long, CourseMining> courseMining,
final Map<Long, CourseMining> oldCourseMining) {
if (courseMining.get(course) != null)
{
this.course = courseMining.get(course);
courseMining.get(course).addCourseUpdates(this);
}
if ((this.course == null) && (oldCourseMining.get(course) != null))
{
this.course = oldCourseMining.get(course);
oldCourseMining.get(course).addCourseUpdates(this);
}
}
/**
* standard getter for the attribute user
*
* @return the user who interact with the course
*/
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="user_id")
public UserMining getUser() {
return this.user;
}
/**
* standard setter for the attribute user
*
* @param user
* the user who interact with the course
*/
public void setUser(final UserMining user) {
this.user = user;
}
/**
* parameterized setter for the attribute user
*
* @param user
* the id of the user who interact with the resource
* @param userMining
* a list of new added user, which is searched for the user with the id submitted in the user parameter
* @param oldUserMining
* a list of user in the mining database, which is searched for the user with the id submitted in the
* user parameter
*/
public void setUser(final long user, final Map<Long, UserMining> userMining,
final Map<Long, UserMining> oldUserMining) {
if (userMining.get(user) != null)
{
this.user = userMining.get(user);
userMining.get(user).addCourseLog(this);
}
if ((this.user == null) && (oldUserMining.get(user) != null))
{
this.user = oldUserMining.get(user);
oldUserMining.get(user).addCourseLog(this);
}
}
@Transient
public Long getPrefix() {
return 12L;
}
@Column(name="platform")
public Long getPlatform() {
return this.platform;
}
public void setPlatform(final Long platform) {
this.platform = platform;
}
}