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package ee.tlu.htk.dippler.entities;

import java.io.Serializable;
import java.util.Collection;
import java.util.Date;
import javax.persistence.Basic;
import javax.persistence.CascadeType;
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.Lob;
import javax.persistence.ManyToMany;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.TableGenerator;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Transient;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;

/**
 *
 * @author metz
 */
@XmlRootElement
@Entity
@Table(name = "learning_outcome")
@NamedQueries({
    @NamedQuery(name = "LearningOutcome.findAll", query = "SELECT l FROM LearningOutcome l"),
    @NamedQuery(name = "LearningOutcome.findById", query = "SELECT l FROM LearningOutcome l WHERE l.id = :id"),
    @NamedQuery(name = "LearningOutcome.findByCreated", query = "SELECT l FROM LearningOutcome l WHERE l.created = :created"),
    @NamedQuery(name = "LearningOutcome.findByModified", query = "SELECT l FROM LearningOutcome l WHERE l.modified = :modified")})
public class LearningOutcome implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(generator = "LearningOutcomeID")
    @TableGenerator(name="LearningOutcomeID", table="id_gen", 
            pkColumnName="ID_NAME", 
            valueColumnName = "ID_VAL",
            pkColumnValue="LAST_LEARNING_OUTCOME",
            allocationSize=1)
    @Basic(optional = false)
    @Column(name = "id")
    private Long id;

    @Lob
    @Column(name = "title")
    private String title;
    
    @Column(name = "type")
    private String type;

    @Basic(optional = false)
    @Column(name = "created")
    @Temporal(TemporalType.TIMESTAMP)
    private Date created;

    @Basic(optional = false)
    @Column(name = "modified")
    @Temporal(TemporalType.TIMESTAMP)
    private Date modified;

    @JoinColumn(name = "creator", referencedColumnName = "id")
    @ManyToOne(optional = false, fetch = FetchType.LAZY)
    private User creator;

    @JoinColumn(name = "course", referencedColumnName = "id")
    @ManyToOne
    private Course course;


    @JoinTable(name = "assignment_learning_outcomes", joinColumns = {
        @JoinColumn(name = "learningoutcome", referencedColumnName = "id")}, inverseJoinColumns = {
        @JoinColumn(name = "assignment", referencedColumnName = "id")})
    @ManyToMany(cascade = {CascadeType.MERGE, CascadeType.PERSIST, CascadeType.REFRESH})
    private Collection<Assignment> assignments;

    @Transient
    private Long courseId;

    
    @OneToMany
    @JoinTable(name = "category_relationship",
        joinColumns = {
            @JoinColumn(name = "parent_id", referencedColumnName = "id"),
            @JoinColumn(name = "parent_type", referencedColumnName = "type")
        },
        inverseJoinColumns = { 
            @JoinColumn(name = "category_id", referencedColumnName = "id")
        }
    )
    private Collection<Category> categories;

    @Transient
    @XmlElementWrapper(name="categoryIds")
    @XmlElement(name="category")
    public Collection<Long> categoryIds;
     
    public LearningOutcome() {
    }

    public LearningOutcome(Long id) {
        this.id = id;
    }

    public LearningOutcome(Long id, Date created, Date modified) {
        this.id = id;
        this.created = created;
        this.modified = modified;
    }

    public Long getId() {
        return id;
    }

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

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public Date getCreated() {
        return created;
    }

    public User getCreator() {
        return creator;
    }

    public void setCreator(User creator) {
        this.creator = creator;
    }

    public void setCreated(Date created) {
        this.created = created;
    }

    public Date getModified() {
        return modified;
    }

    public void setModified(Date modified) {
        this.modified = modified;
    }

    public Course getCourse() {
        return course;
    }

    public void setCourse(Course course) {
        this.course = course;
        if ( !this.course.getLearningOutcomes().contains(this)) {
            this.course.addLearningOutcome(this);
        }
    }

    public Long getCourseId() {
        return courseId;
    }

    public void setCourseId(Long cid) {
        this.courseId = cid;
    }

    public Collection<Assignment> getAssignments() {
        return assignments;
    }

    public void setAssignments(Collection<Assignment> assignments) {
        this.assignments = assignments;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }
    public Collection<Category> getCategories() {
        return categories;
    }

    public void setCategories(Collection<Category> categories) {
        this.categories = categories;
    }
    public void setCategoryIds(Collection<Long> categoryIds) {
        this.categoryIds = categoryIds;
    }

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof LearningOutcome)) {
            return false;
        }
        LearningOutcome other = (LearningOutcome) object;
        if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "ee.tlu.htk.dippler.entities.LearningOutcome[id=" + id + "]";
    }

}