PrimeFaces + Spring Data + Redis Integeration

This tutorial guides you through the integration between various frameworks, Primefaces, Spring Data & Redis Key/Value database. We have published tutorials about these topics earlier and you can refer them for the detailed discussion on each topic. This tutorial assumes that reader had enough knowledge on those topics and will be able to integration of these frameworks. If you have any questions, please write it in the comments section. At the end of this tutorial, you will be able to download the source code for this example.

Also read:

• Spring Roo + Spring Data JPA Repositories + Eclipse Integration
• Spring Data JPA + Querydsl
• Spring Data + MongoDB 

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1. Java Bean

We would use Address and Employee entities in this example.

Address.java

package net.javabeat.springdata.jpa.data;

import java.io.Serializable;
import java.math.BigInteger;

public class Address implements Serializable {

	private static final long serialVersionUID = 1L;

	private BigInteger id;

	private String addressCountry;

	private String addressCity;

	public BigInteger getId() {
		return id;
	}

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

	public String getAddressCountry() {
		return addressCountry;
	}

	public void setAddressCountry(String addressCountry) {
		this.addressCountry = addressCountry;
	}

	public String getAddressCity() {
		return addressCity;
	}

	public void setAddressCity(String addressCity) {
		this.addressCity = addressCity;
	}
}

Employee.java

package net.javabeat.springdata.jpa.data;

import java.io.Serializable;

public class Employee implements Serializable{

	private static final long serialVersionUID = 1L;

	private int id;

	private String employeeName;

	private Address address = new Address();

	public int getId() {
		return id;
	}

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

	public String getEmployeeName() {
		return employeeName;
	}

	public void setEmployeeName(String employeeName) {
		this.employeeName = employeeName;
	}

	public Address getAddress() {
		return address;
	}

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

	public boolean equals(Object obj){
		if(obj instanceof Employee){
			Employee emp = (Employee)obj;
			if(emp.getId() == (this.id)){
				return true;
			}
		}
		return false;
	}

	public int hashCode(){
		return this.id;
	}
}

2. Spring Configurations

Here is the spring configurations for this tutorial. The key point here is to add the Redis database template class and connection factory. Also the bean package for the auto scan of the java classes.

SpringContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

	<!--  Scanning the Spring Beans -->
	<context:component-scan base-package="net.javabeat.springdata.beans"></context:component-scan>
	<!-- Redis Connection Factory -->
	<bean id="jedisConnFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
			p:use-pool="true" />
	<!-- Redis Template -->
	<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"
			p:connection-factory-ref="jedisConnFactory" />

</beans>

3. Spring Bean Service

RegistrationService is the entry point that used for accessing the RedisTemplate that responsible for achieving the different operations using Redis database.

RegistrationService.java

package net.javabeat.springdata.beans;

import net.javabeat.springdata.jpa.data.Employee;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

@Component
public class RegistrationService {
	@Autowired
	private RedisTemplate<String,Employee> redisTemplate;

	public RedisTemplate<String, Employee> getRedisTemplate() {
		return redisTemplate;
	}

	public void setRedisTemplate(RedisTemplate<String, Employee> redisTemplate) {
		this.redisTemplate = redisTemplate;
	}
}

4. PrimeFaces / JSF Configurations

A non trivial configuration is required when it comes to inject a spring bean into faces managed bean, that’s done by adding a spring expression language resolver into faces-config.xml.

faces-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<faces-config xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd"
	version="2.2">
<application>
	<resource-bundle>
		<base-name>net.javabeat.jsf.application</base-name>
		<var>msg</var>
	</resource-bundle>
	<el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
</application>
</faces-config>

5. PrimeFaces Managed Bean

RegistrationManagedBean.java

package net.javabeat.primefaces.managedbeans;

import java.util.ArrayList;
import java.util.List;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.bean.SessionScoped;

import net.javabeat.springdata.beans.RegistrationService;
import net.javabeat.springdata.jpa.data.Employee;

@ManagedBean
@SessionScoped
public class RegistrationManagedBean {

	public static final String EMP_TYPE = "EMP";

	private Employee employee = new Employee();

	private List<Employee> employees = new ArrayList<Employee>();

	private String searchIdentifier;

	private List<Employee> searchedEmployees = new ArrayList<Employee>();

	@ManagedProperty(value="#{registrationService}")
	private RegistrationService service;

	public Employee getEmployee() {
		return employee;
	}

	public void setEmployee(Employee employee) {
		this.employee = employee;
	}

	public List<Employee> getEmployees() {
		List<Object> os = this.service.getRedisTemplate().opsForHash().values(EMP_TYPE);
		employees = new ArrayList<Employee>();
		for(Object o : os){
			Employee e = (Employee)o;
			employees.add(e);
		}
		return employees;
	}

	public void setEmployees(List<Employee> employees) {
		this.employees = employees;
	}

	public RegistrationService getService() {
		return service;
	}

	public void setService(RegistrationService service) {
		this.service = service;
	}

	public String getSearchIdentifier() {
		return searchIdentifier;
	}

	public void setSearchIdentifier(String searchIdentifier) {
		this.searchIdentifier = searchIdentifier;
	}

	public List<Employee> getSearchedEmployees() {
		return searchedEmployees;
	}

	public void setSearchedEmployees(List<Employee> searchedEmployees) {
		this.searchedEmployees = searchedEmployees;
	}

	public String register(){
		// Supposed employee identifier mechanism
		int employeeId = this.service.getRedisTemplate().opsForHash().values(EMP_TYPE).size() + 1;
		this.employee.setId(employeeId);
		// Save
		this.service.getRedisTemplate().
			opsForHash().put("EMP", this.employee.hashCode(), employee);
		this.employee = new Employee();
		return "";
	}

	public String searchById(){
		// Reset the searched list
		this.searchedEmployees = new ArrayList<Employee>();
		// Create dummy employee
		Employee emp = new Employee();
		if(this.searchIdentifier != null && !this.searchIdentifier.equals(""))
			// Set employee identifier for that value entered by the end user
			emp.setId(Integer.parseInt(this.searchIdentifier));
		// Rely on the hash code generated by the employee hashCode()
		this.searchedEmployees.add((Employee)this.service.getRedisTemplate().opsForHash().get(EMP_TYPE, emp.hashCode()));
		return "";
	}
}

6. Web Deployment Descriptor

It’s the deployment descriptor that contains the definition of the web application that is used by the Java EE container. There is not much explanation needed for this section, we have to define the JSF and Spring configurations in the web.xml file.

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" metadata-complete="true" version="2.5">
  <context-param>
    <description>State saving method: 'client' or 'server'
						(=default). See JSF Specification 2.5.2
		</description>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>server</param-value>
  </context-param>
  <context-param>
    <param-name>javax.faces.application.CONFIG_FILES</param-name>
    <param-value>/WEB-INF/faces-config.xml</param-value>
  </context-param>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring-config/*.xml</param-value>
  </context-param>
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.xhtml</url-pattern>
  </servlet-mapping>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
  </listener>
</web-app>

7. The View

Here is the PrimeFaces view that is used in this example.

index.xhtml

<html xmlns="http://www.w3.org/1999/xhtml"
	xmlns:ui="http://java.sun.com/jsf/facelets"
	xmlns:h="http://java.sun.com/jsf/html"
	xmlns:f="http://java.sun.com/jsf/core"
	xmlns:p="http://primefaces.org/ui">
	<h:head>
		<script name="jquery/jquery.js" library="primefaces"></script>
	</h:head>
	<f:view>
		<h:form prependId="false">
			<h3>JavaBeat - Tutorials</h3>
			<h2>Primefaces + Spring Data + Redis</h2>
			<h:panelGrid columns="2">
				<h:outputText value="Enter Employee Name:"/>
				<p:inputText value="#{registrationManagedBean.employee.employeeName}"></p:inputText>
				<h:outputText value="Enter Employee Address Country:"/>
				<p:inputText value="#{registrationManagedBean.employee.address.addressCountry}"></p:inputText>
				<h:outputText value="Enter Employee Address City:"/>
				<p:inputText value="#{registrationManagedBean.employee.address.addressCity}"></p:inputText>
			</h:panelGrid>
			<p:commandButton value="Register" action="#{registrationManagedBean.register}" ajax="false"/>
			<p:separator/>
			<h:panelGrid columns="1">
				<p:dataTable value="#{registrationManagedBean.employees}" var="employee">
					<p:column headerText="Employee's Name">
						<h:outputText value="#{employee.employeeName}"/>
					</p:column>
					<p:column headerText="Employee's Country">
						<h:outputText value="#{employee.address.addressCountry}"/>
					</p:column>
					<p:column headerText="Employee's City">
						<h:outputText value="#{employee.address.addressCity}"/>
					</p:column>
				</p:dataTable>
			</h:panelGrid>
			<p:separator/>
			<h:panelGrid columns="2">
				<f:facet name="header">
					<h2>
						<h:outputText value="Search"/>
					</h2>
				</f:facet>
				<h:outputText value="Enter Employee Id"/>
				<p:inputText value="#{registrationManagedBean.searchIdentifier}"></p:inputText>
			</h:panelGrid>
			<p:commandButton value="Search" action="#{registrationManagedBean.searchById}" ajax="false"/>
			<p:separator/>
			<h:panelGrid columns="1">
				<p:dataTable value="#{registrationManagedBean.searchedEmployees}"
						var="employee" emptyMessage="No Result">
					<p:column headerText="Employee's Name">
						<h:outputText value="#{employee.employeeName}"/>
					</p:column>
					<p:column headerText="Employee's Country">
						<h:outputText value="#{employee.address.addressCountry}"/>
					</p:column>
					<p:column headerText="Employee's City">
						<h:outputText value="#{employee.address.addressCity}"/>
					</p:column>
				</p:dataTable>
			</h:panelGrid>
		</h:form>
	</f:view>
</html>

8. Maven Dependencies

Here is the maven build file (pom.xml), that used for managing the dependencies of the web application. This pom.xml file listed all the dependencies used for this tutorial.

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>next.javabeat.jsf</groupId>
	<artifactId>JavaBeat-Primefaces-SpringData-Redis</artifactId>
	<packaging>war</packaging>
	<version>1.0</version>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<java.version>1.6</java.version>
		<junit.version>4.9</junit.version>
		<slf4j.version>1.6.4</slf4j.version>
		<logback.version>1.0.1</logback.version>
		<log4j.version>1.2.14</log4j.version>

		<servlet.version>2.5</servlet.version>
		<jsp.version>2.1</jsp.version>
		<jstl.version>1.2</jstl.version>
		<taglibs-standard.version>1.1.2</taglibs-standard.version>

		<maven.compiler.plugin>2.3.2</maven.compiler.plugin>
		<maven.failsafe.plugin>2.4.3-alpha-1</maven.failsafe.plugin>

	</properties>
	<build>
		<finalName>${project.artifactId}</finalName>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>${maven.compiler.plugin}</version>
				<configuration>
					<source>${java.version}</source>
					<target>${java.version}</target>
					<encoding>${project.build.sourceEncoding}</encoding>
				</configuration>
			</plugin>

		</plugins>
	</build>
	<dependencies>

		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${slf4j.version}</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>${servlet.version}</version>
			<scope>provided</scope>
		</dependency>

		<dependency>
			<groupId>com.sun.faces</groupId>
			<artifactId>jsf-impl</artifactId>
			<version>2.2.4</version>
		</dependency>

		<dependency>
			<groupId>com.sun.faces</groupId>
			<artifactId>jsf-api</artifactId>
			<version>2.2.4</version>
		</dependency>

		<dependency>
			<groupId>org.primefaces</groupId>
			<artifactId>primefaces</artifactId>
			<version>4.0</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet.jsp</groupId>
			<artifactId>javax.servlet.jsp-api</artifactId>
			<version>2.3.1</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.1.2</version>
		</dependency>

		<!-- Spring Data - Redis Library -->
		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-redis</artifactId>
			<version>1.2.1.RELEASE</version>
		</dependency>
		<!-- Jedis Driver Library -->
		<dependency>
			<groupId>redis.clients</groupId>
			<artifactId>jedis</artifactId>
			<version>2.4.2</version>
		</dependency>

		<!-- Spring Core -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>4.0.0.RELEASE</version>
		</dependency>
		<!-- Spring Data commons -->
		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-commons</artifactId>
			<version>1.5.0.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>4.0.3.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-pool2</artifactId>
			<version>2.2</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>4.0.3.RELEASE</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>4.0.4.RELEASE</version>
		</dependency>

		<dependency>
			<groupId>com.google.guava</groupId>
			<artifactId>guava</artifactId>
			<version>r09</version>
		</dependency>
	</dependencies>
</project>

9. Primefaces + Spring Data + Redis Demo

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