Java Tutorial/JPA/Embeddable — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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Текущая версия на 08:18, 1 июня 2010
Embeddable Entity
File: Student.java
<source lang="java">
import javax.persistence.Embedded; import javax.persistence.Entity; import javax.persistence.Id; @Entity public class Student {
@Id private int id; private String name; @Embedded private Address address; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; }
public Address getAddress() { return address; } public void setAddress(Address address) { this.address = address; } public String toString() { return "Student id: " + getId() + " name: " + getName() + " with " + getAddress(); }
}</source>
Embedded Objects Multiple Tables
File: Address.java
<source lang="java">
import javax.persistence.Column; import javax.persistence.Embeddable; @Embeddable public class Address {
private String street; private String city; private String state; @Column(name="ZIP_CODE") private String zip; public String getStreet() { return street; } public void setStreet(String address) { this.street = address; } 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 String getZip() { return zip; } public void setZip(String zip) { this.zip = zip; } public String toString() { return "Address street: " + getStreet() + ", city: " + getCity() + ", state: " + getState() + ", zip: " + getZip(); }
}</source>
File: Company.java
<source lang="java">
import javax.persistence.Embedded; import javax.persistence.Entity; import javax.persistence.Id; @Entity public class Company {
@Id private String name; @Embedded private Address address; public String getName() { return name; } public void setName(String name) { this.name = name; } public Address getAddress() { return address; } public void setAddress(Address address) { this.address = address; } public String toString() { return "Company name: " + getName() + " at " + getAddress(); }
}</source>