AccountEvent.java

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package fi.insomnia.bortal.model;

import java.math.BigDecimal;
import java.util.Calendar;
import java.util.List;

import javax.persistence.Column;
import javax.persistence.EmbeddedId;
import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.JoinColumns;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Version;

/**
 * Account event contains the money / credit traffic for the user. Each row
 * references a Product entity.
 */
@Entity
@Table(name = "account_events")
@NamedQueries({
        @NamedQuery(name = "AccountEvent.findAll", query = "SELECT a FROM AccountEvent a"),
        @NamedQuery(name = "AccountEvent.findByUnitPrice", query = "SELECT a FROM AccountEvent a WHERE a.unitPrice = :unitPrice"),
        @NamedQuery(name = "AccountEvent.findByUnits", query = "SELECT a FROM AccountEvent a WHERE a.units = :units"),
        @NamedQuery(name = "AccountEvent.findByEventTime", query = "SELECT a FROM AccountEvent a WHERE a.eventTime = :eventTime"),
        @NamedQuery(name = "AccountEvent.findByDelivered", query = "SELECT a FROM AccountEvent a WHERE a.delivered = :delivered") })
public class AccountEvent implements EventChildInterface {
    private static final long serialVersionUID = 1L;

    
    @EmbeddedId
    private EventPk id;

    /**
     * What 1 unit of this product costs.
     */
    @Column(name = "unit_price", nullable = false, precision = 24, scale = 4)
    private BigDecimal unitPrice;

    /**
     * The units of the product, eg 1.345 (l), 5 (units) 888.32 (g)..
     */
    @Column(name = "quantity", nullable = false, precision = 24, scale = 4)
    private BigDecimal units;

    /**
     * The time this AccountEvent is created.
     */
    @Column(name = "event_time", nullable = false)
    @Temporal(TemporalType.TIMESTAMP)
    private Calendar eventTime = Calendar.getInstance();

    /**
     * Is the product delivered to the user.
     */
    @Column(name = "delivered")
    @Temporal(TemporalType.TIMESTAMP)
    private Calendar delivered;

    /**
     * If this AccountEvent is a product in foodwace, this field is a reference
     * to that foodwave.
     */
    @JoinColumns({
            @JoinColumn(name = "food_wave_id", referencedColumnName = "id"),
            @JoinColumn(name = "event_id", referencedColumnName = "event_id", updatable = false, insertable = false) })
    @ManyToOne
    private FoodWave foodWave;

    /**
     * The product user has acquired and this this AccountEvent is a reference
     * to.
     */
    @JoinColumns({
            @JoinColumn(name = "product_id", referencedColumnName = "id", nullable = false),
            @JoinColumn(name = "event_id", referencedColumnName = "event_id", nullable = false, updatable = false, insertable = false) })
    @ManyToOne(optional = false)
    private Product product;

    /**
     * The user that bought the products.
     */
    @JoinColumn(name = "user_id", referencedColumnName = "user_id", nullable = false)
    @ManyToOne(optional = false)
    private User user;

    /**
     * Who sold the items to the user.
     */
    @JoinColumn(name = "seller_user_id", referencedColumnName = "user_id")
    @ManyToOne(optional = true)
    private User seller;

    /**
     * What discounts user has for this account event. Some magic is applied to
     * calculate these.. :)
     */
    @OneToMany(mappedBy = "accountEvent")
    private List<DiscountInstance> discountInstances;

    /**
     * When user has paid a bill a Account event for product "Credit" is created
     * and reference to that bill is here..
     */
    @JoinColumns({
            @JoinColumn(name = "bill_id", referencedColumnName = "id", nullable = false, updatable = false, insertable = false),
            @JoinColumn(name = "event_id", referencedColumnName = "event_id", nullable = false, updatable = false, insertable = false) })
    @OneToOne
    private Bill bill;

    @Version
    @Column(nullable = false)
    private int jpaVersionField = 0;

    @Override
    public EventPk getId() {
        return id;
    }

    @Override
    public void setId(EventPk id) {
        this.id = id;
    }

    @Override
    public int getJpaVersionField() {
        return jpaVersionField;
    }

    @Override
    public void setJpaVersionField(int jpaVersionField) {
        this.jpaVersionField = jpaVersionField;
    }

    public AccountEvent() {
    }

    public AccountEvent(LanEvent event) {
        this.id = new EventPk(event);
    }

    public AccountEvent(LanEvent event, BigDecimal unitPrice,
            BigDecimal quantity, Calendar eventTime) {
        this.id = new EventPk(event);
        this.setUnitPrice(unitPrice);
        this.setQuantity(quantity);
        this.eventTime = eventTime;
    }

    public Calendar getEventTime() {
        return eventTime;
    }

    public void setEventTime(Calendar eventTime) {
        this.eventTime = eventTime;
    }

    public Calendar getDelivered() {
        return delivered;
    }

    public void setDelivered(Calendar delivered) {
        this.delivered = delivered;
    }

    public User getUser() {
        return user;
    }

    public void setUser(User usersId) {
        this.user = usersId;
    }

    public List<DiscountInstance> getDiscountInstances() {
        return discountInstances;
    }

    public void setDiscountInstances(List<DiscountInstance> discountInstanceList) {
        this.discountInstances = discountInstanceList;
    }

    @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 AccountEvent)) {
            return false;
        }
        AccountEvent other = (AccountEvent) 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 "fi.insomnia.bortal.model.AccountEvent[id=" + id + "]";
    }

    public void setFoodWave(FoodWave foodWave) {
        this.foodWave = foodWave;
    }

    public FoodWave getFoodWave() {
        return foodWave;
    }

    public void setProduct(Product product) {
        this.product = product;
    }

    public Product getProduct() {
        return product;
    }

    public void setSeller(User seller) {
        this.seller = seller;
    }

    public User getSeller() {
        return seller;
    }

    public void setBill(Bill bill) {
        this.bill = bill;
    }

    public Bill getBill() {
        return bill;
    }

    public void setUnitPrice(BigDecimal unitPrice) {
        this.unitPrice = unitPrice;
    }

    public BigDecimal getUnitPrice() {
        return unitPrice;
    }

    public void setQuantity(BigDecimal units) {
        this.units = units;
    }

    public BigDecimal getQuantity() {
        return units;
    }

}