FadderGroup.java

package no.niths.domain.school;

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.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Transient;
import javax.persistence.UniqueConstraint;
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 no.niths.common.constants.AdminConstantNames;
import no.niths.domain.Domain;

import org.codehaus.jackson.map.annotate.JsonSerialize;
import org.hibernate.annotations.Cascade;
import org.hibernate.annotations.CascadeType;
/**
 * Domain class for a student orientation group(Faddergruppe)
 *
 * <p>
 * FadderGroup has these variables:
 * groupNumber = example 23 (must be unique)
 * </p>
 * <p>
 * And relations too:
 * Student (as leaders and fadderChildren)
 * </p>
 */
@XmlRootElement(name = "faddergroup")
@Entity
@Table(name = AdminConstantNames.FADDER_GROUPS)
@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
@XmlAccessorType(XmlAccessType.FIELD)  
public class FadderGroup implements Domain {

    @Transient
    private static final long serialVersionUID = -3434555328809873472L;
    
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
        
    @Column(name="group_number", unique=true)
    @XmlElement(name="groupnumber")
    private Integer groupNumber;
    
    @ManyToMany(fetch = FetchType.LAZY)
    @Cascade(CascadeType.ALL)
    @JoinTable(    name="fadder_leaders_students", 
    uniqueConstraints={@UniqueConstraint(columnNames ={"fadder_groups_id", "leaders_id"})} )
    private List<Student> leaders = new ArrayList<Student>();
    
    @OneToMany(fetch = FetchType.LAZY)
    @Cascade(CascadeType.ALL)
    @JoinTable(    name="fadder_children_students", 
    uniqueConstraints={@UniqueConstraint(columnNames ={"fadder_groups_id", "fadderChildren_id"})} )
    @XmlElement(name="fadderchildren")
    private List<Student> fadderChildren = new ArrayList<Student>();
    
    
    public FadderGroup() {
        this(null);
        setFadderChildren(null);
        setLeaders(null);
    }
    
    public FadderGroup(Integer groupNumber) {
        this.groupNumber = groupNumber;
    }
    
    public List<Student> getLeaders() {
        return leaders;
    }

    public void setLeaders(List<Student> leaders) {
        this.leaders = leaders;
    }

    public List<Student> getFadderChildren() {
        return fadderChildren;
    }

    public void setFadderChildren(List<Student> fadderChildren) {
        this.fadderChildren = fadderChildren;
    }


    public Integer getGroupNumber() {
        return groupNumber;
    }

    public void setGroupNumber(Integer groupId) {
        this.groupNumber = groupId;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }
    
    @Override
    public boolean equals(Object obj) {
        if (!(obj instanceof FadderGroup)) {
            return false;
        }
        FadderGroup s = (FadderGroup) obj;
        return s == this ? true : s.getId() == id ? true : false;
    }
    
    @Override
    public String toString() {
        return String.format("[%s][%d]", id, groupNumber);
    }

}