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2010-06-01T05:18:41Z

1 версия

в 17:44, 31 мая 2010

2010-05-31T17:44:27Z

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== Column Definition For Join Column ==

<p>File: Employee.java</p>



<source lang="java">
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
@Entity
public class Employee {
@Id
int id;

@ManyToOne
@JoinColumn(name="MGR", columnDefinition="VARCHAR(40)")
private Employee manager;

}</source>



== Nullable Join Column ==

<p>File: Address.java</p>



<source lang="java">
import javax.persistence.Entity;
import javax.persistence.Id;
@Entity
public class Address {
@Id
private int id;
private String street;
private String city;
private String state;
private String zip;

public int getId() {
return id;
}

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

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 id: " + getId() +
", street: " + getStreet() +
", city: " + getCity() +
", state: " + getState() +
", zip: " + getZip();
}
}</source>

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Admin: 1 версия

в 17:44, 31 мая 2010