Room.java

package no.niths.domain.location;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
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.OneToMany;
import javax.persistence.Table;
import javax.persistence.Transient;
import javax.validation.constraints.Pattern;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlTransient;

import no.niths.common.constants.DomainConstantNames;
import no.niths.domain.Domain;
import no.niths.domain.school.Exam;
import no.niths.domain.school.Subject;
import no.niths.domain.signaling.AccessField;

import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.map.annotate.JsonSerialize;
import org.hibernate.annotations.Cascade;
import org.hibernate.annotations.CascadeType;
/**
 * Domain class for Room
 *
 * <p>
 * Room has these variables:
 * roomName = example 43 (must be unique)
 * </p>
 * <p>
 * And relations too:
 * AccessField,
 * Subject,
 * Exam
 * </p>
 */
@Entity
@Table(name = DomainConstantNames.ROOMS)
@XmlRootElement
@JsonSerialize(include = JsonSerialize.Inclusion.NON_DEFAULT)
@XmlAccessorType(XmlAccessType.FIELD)
public class Room implements Domain {

    @Transient
    private static final long serialVersionUID = -664567726655902624L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(name = "room_name", unique = true)
    @Pattern(
            regexp  = "\\w+[\\w\\s]*\\w",
            message = "Invalid room name: only alphanumeric characters allowed")
    @XmlElement(name="roomname")
    private String roomName;

    @ManyToMany(fetch = FetchType.LAZY)
    @Cascade(CascadeType.ALL)
    @JoinTable(
            name               = "rooms_accessfields",
            joinColumns        = @JoinColumn(name = "room_id"),
            inverseJoinColumns = @JoinColumn(name = "accessfield_id"))
    @XmlElement(name="accessfields")
    private List<AccessField> accessFields = new ArrayList<AccessField>();

    @JsonIgnore
    @XmlTransient
    @ManyToMany(fetch = FetchType.LAZY)
    @Cascade(CascadeType.ALL)
    @JoinTable(name = "rooms_exams", joinColumns = @JoinColumn(name = "room_id"), inverseJoinColumns = @JoinColumn(name = "exams_id"))
    private List<Exam> exams = new ArrayList<Exam>();

    @JsonIgnore
    @XmlTransient
    @OneToMany(fetch = FetchType.LAZY)
    @JoinTable(name = "subjects_room", joinColumns = @JoinColumn(name = "room_id"), inverseJoinColumns = @JoinColumn(name = "subjects_id"))
    @Cascade(CascadeType.ALL)
    private List<Subject> subjects = new ArrayList<Subject>();

    public Room(String roomName) {
        setRoomName(roomName);
    }

    public Room() {
        this((String) null);
        setSubjects(null);
        setExams(null);
        setAccessFields(null);
    }

    public Room(Long id) {
        setId(id);
    }

    public void setId(Long id) {
        this.id = id;
    }

    public Long getId() {
        return id;
    }

    public void setRoomName(String roomName) {
        this.roomName = roomName;
    }

    public String getRoomName() {
        return roomName;
    }

    public void setAccessFields(List<AccessField> accessFields) {
        this.accessFields = accessFields;
    }

    public List<AccessField> getAccessFields() {
        return accessFields;
    }

    public void setExams(List<Exam> exams) {
        this.exams = exams;
    }

    public List<Exam> getExams() {
        return exams;
    }

    @Override
    public String toString() {
        return String.format("[%s][%s]", id, roomName);
    }

    public List<Subject> getSubjects() {
        return subjects;
    }

    public void setSubjects(List<Subject> subjects) {
        this.subjects = subjects;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this)
            return true;
        if (!(obj instanceof Room))
            return false;

        Room room = (Room) obj;
        return room.getId() == id || (room.getRoomName().equals(roomName) && room.getId() == id);
    }
}