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PO@OrderBy not working properly in JPA
 

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  1. PO@OrderBy not working properly in JPA
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    <p>How does <code>@OrderBy</code> work?</p> <p>It is not working here in the following code:</p> <p><strong>Employee.java</strong></p> <pre><code>package com.semanticbits.pojo; import java.util.List; import javax.persistence.CascadeType; import javax.persistence.Embedded; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.OneToMany; import javax.persistence.OrderBy; @Entity public class Employee { @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private int employeeId; private String name; private double salary; @OneToMany(cascade=CascadeType.ALL) @JoinColumn(name="EMP_ID") @OrderBy("city DESC") private List&lt;Address&gt; address; //setters and getters public int getEmployeeId() { return employeeId; } public void setEmployeeId(int employeeId) { this.employeeId = employeeId; } public String getName() { return name; } public void setName(String name) { this.name = name; } public double getSalary() { return salary; } public void setSalary(double salary) { this.salary = salary; } public List&lt;Address&gt; getAddress() { return address; } public void setAddress(List&lt;Address&gt; address) { this.address = address; } } </code></pre> <p><strong>Address.java</strong></p> <pre><code>package com.semanticbits.pojo; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity public class Address { @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private int addressId; private String street; private String city; private String state; private int zipCode; public String getStreet() { return street; } public void setStreet(String street) { this.street = street; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } public String getState() { return state; } public void setState(String state) { this.state = state; } public int getZipCode() { return zipCode; } public void setZipCode(int zipCode) { this.zipCode = zipCode; } } </code></pre> <p><strong>persistence.xml</strong></p> <pre><code> &lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"&gt; &lt;persistence-unit name="orderbyannotationdemo" transaction-type="RESOURCE_LOCAL"&gt; &lt;provider&gt;&lt;/provider&gt; &lt;class&gt;com.semanticbits.pojo.Employee&lt;/class&gt; &lt;class&gt;com.semanticbits.pojo.Address&lt;/class&gt; &lt;properties&gt; &lt;property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/shoaib"/&gt; &lt;property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/&gt; &lt;property name="javax.persistence.jdbc.user" value="root"/&gt; &lt;property name="javax.persistence.jdbc.password" value="root"/&gt; &lt;property name="eclipselink.logging.level" value="FINE"/&gt; &lt;property name="eclipselink.ddl-generation" value="create-tables"/&gt; &lt;/properties&gt; &lt;/persistence-unit&gt; &lt;/persistence&gt; </code></pre> <p>This is the test class......check out the city name and it is not storing address values in order in descending order in the ADDRESS table</p> <p><strong>JPAOrderByAnnotationTest</strong></p> <pre><code> package com.semanticbits.test; import java.util.ArrayList; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.Persistence; import com.semanticbits.pojo.Address; import com.semanticbits.pojo.Employee; public class JPAOrderByAnnotationTest { /** * @param args */ public static void main(String[] args) { EntityManagerFactory factory=Persistence.createEntityManagerFactory("orderbyannotationdemo"); EntityManager manager=factory.createEntityManager(); Employee employee=new Employee(); employee.setName("Shoaib"); employee.setSalary(1452365); Address addressOffice=new Address(); addressOffice.setCity("Hyderabad"); addressOffice.setStreet("Gachibowli"); addressOffice.setState("AP"); addressOffice.setZipCode(500016); Address addressHome=new Address(); addressHome.setCity("Noida"); addressHome.setStreet("Chandai Chowk"); addressHome.setState("UP"); addressHome.setZipCode(415608); Address addressCollege=new Address(); addressCollege.setCity("Antartica"); addressCollege.setState("Canada"); addressCollege.setStreet("New York"); addressCollege.setZipCode(402103); List&lt;Address&gt; addresses=new ArrayList&lt;Address&gt;(); addresses.add(addressHome); addresses.add(addressOffice); addresses.add(addressCollege); employee.setAddress(addresses); manager.getTransaction().begin(); manager.persist(employee); manager.getTransaction().commit(); manager.close(); } } </code></pre>
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    1. USApostolos
    1. USShoaib Chikate
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    1. COShouldn't you put the annotation to the getter and not to the field?
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      1. USNeplatnyUdaj
 

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