Entity with Super Class using @MappedClass

1. BaseEntity.java
package com.yourcompany.project.entity;

import java.io.Serializable;
import java.util.Calendar;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.MappedSuperclass;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;

/**
 * @author RBN.
 *
 */
@MappedSuperclass
public abstract class BaseEntity implements Serializable {

    private static final long serialVersionUID = 3256578224929224117L;

    @Column(name = "CREATED_BY")
    private String createdBy;

    @Column(name = "CREATED_AT")
    @Temporal(TemporalType.TIMESTAMP)
    private Date createdAt;

    @Column(name = "UPDATED_BY")
    private String updatedBy;

    @Column(name = "UPDATED_AT")
    @Temporal(TemporalType.TIMESTAMP)
    private Date updatedAt;

    public String getCreatedBy() {
        return createdBy;
    }

    public void setCreatedBy(String createdBy) {
        this.createdBy = createdBy;
    }

    public Date getCreatedAt() {
        return createdAt;
    }

    public void setCreatedAt(Date createdAt) {
        this.createdAt = createdAt;
    }

    public String getUpdatedBy() {
        return updatedBy;
    }

    public void setUpdatedBy(String updatedBy) {
        this.updatedBy = updatedBy;
    }

    public Date getUpdatedAt() {
        return updatedAt;
    }

    public void setUpdatedAt(Date updatedAt) {
        this.updatedAt = updatedAt;
    }

    @PrePersist
    @PreUpdate
    protected void updateDates() {
        if (this.createdAt == null) {
            this.createdAt = Calendar.getInstance().getTime();
        }
        this.updatedAt = Calendar.getInstance().getTime();
    }
}


2. Branch.java
/**
 *
 */
package com.yourcompany.project.entity;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToOne;
import javax.persistence.Table;

/**
 * @author RBN.
 *
 */
@Entity
@Table(name = "BRANCHES")
@NamedQueries({
        @NamedQuery(name = "Branch.findAll", query = "SELECT b FROM Branch b ORDER BY b.id DESC"),
        @NamedQuery(name = "Branch.findById", query = "SELECT b FROM Branch b WHERE b.id = :id"),
        @NamedQuery(name = "Branch.findByBranchCode", query = "SELECT b FROM Branch b WHERE b.branchCode = :branchCode") })
public class Branch extends BaseEntity implements Serializable {

    private static final long serialVersionUID = 1034356703289313389L;

    @Id
    @GeneratedValue
    @Column(name = "ID")
    private Long id;

    @Column(name = "BRANCH_CODE")
    private String branchCode;

    @Column(name = "NAME")
    private String name;

    @Column(name = "ADDRESS")
    private String address;

    @Column(name = "TELEPHONE")
    private String telephone;

    @Column(name = "FAX")
    private String fax;

    @Column(name = "EMAIL")
    private String email;

    @OneToOne
    @JoinColumn(name = "MANAGER")
    private Employee manager;

    @Column(name = "OPENING_HRS")
    private String openingHrs;

    @Column(name = "DESCRIPTION")
    private String description;

    public Long getId() {
        return id;
    }

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

    public String getBranchCode() {
        return branchCode;
    }

    public void setBranchCode(String branchCode) {
        this.branchCode = branchCode;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getTelephone() {
        return telephone;
    }

    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }

    public String getFax() {
        return fax;
    }

    public void setFax(String fax) {
        this.fax = fax;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public Employee getManager() {
        return manager;
    }

    public void setManager(Employee manager) {
        this.manager = manager;
    }

    public String getOpeningHrs() {
        return openingHrs;
    }

    public void setOpeningHrs(String openingHrs) {
        this.openingHrs = openingHrs;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

}

Hello world!

Hi
This is Ruban, having 5+ experience in Java/J2EE and Android. I would like to share my programming experience when I faced during my development time.

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