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Hibernate Validator Annotations

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In this section, you will learn how to validate in Hibernate using validator annotations in bean class.

Hibernate Validator Annotations

In this section, you will learn how to validate in Hibernate using validator annotations in bean class.

Given below a annotated bean class named as User.java :

package net.roseindia;

import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;

public class User {
	private Long id;
	
	private String name;
	
	private String password;
	
	private String gender;
	
	private String country;
	
	private String aboutYou;
	
	private Boolean mailingList;
	
	@Id
	@GeneratedValue
	@Column(name = "USER_ID")
	public Long getId() {
	return id;
	}
	
	public void setId(Long id) {
	this.id = id;
	}
	
	@NotNull
	@Size(min = 1, max = 50, message = "username must between 1 to 50 characters")
	@Column(name = "USER_NAME", nullable = false, length = 50)
	public String getName() {
		return name;
	}
	
	public void setName(String name) {
	this.name = name;
	}
	
	@Size(min = 6, max = 10, message = "password must between 6 to 10 characters")
	@Column(name = "USER_PASSWORD", nullable = false, length = 10)
	public String getPassword() {
		return password;
	}
	
	public void setPassword(String password) {
		this.password = password;
	}
	
	@NotNull(message = "Please select a gender")
	@Column(name = "USER_GENDER")
	public String getGender() {
		return gender;
	}
	
	public void setGender(String gender) {
		this.gender = gender;
	}
	
	@NotNull(message = "Please select a country")
	@Column(name = "USER_COUNTRY")
	public String getCountry() {
		return country;
	}
	
	public void setCountry(String country) {
		this.country = country;
	}
	
	@NotNull
	@Size(max = 100)
	@Column(name = "USER_ABOUT_YOU", length = 100)
	public String getAboutYou() {
		return aboutYou;
	}
	
	public void setAboutYou(String aboutYou) {
		this.aboutYou = aboutYou;
	}
	
	@Column(name = "USER_MAILING_LIST")
	public Boolean getMailingList() {
		return mailingList;
	}
	
	public void setMailingList(Boolean mailingList) {
		this.mailingList = mailingList;
	}
}

Description of the annotations used above for validation is given below :

@NotNull : The element which is annotated using @NotNull  must not be null.

@Size: The element which is annotated using @Size must be within the specified limits using min and max.

For detail list of the Validator Annotation click here.

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Posted on: April 12, 2012

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