Relational operators in Spring Expression Language SpEL [Annotation] | Spring Tutorial

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Relational operators in Spring Expression Language SpEL [Annotation] | Spring Tutorial

Relational operators in Spring Expression Language SpEL [Annotation] | Spring Tutorial

Relational operators in Spring Expression Language SpEL [Annotation] | Spring Tutorial

pom.xml

<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%20http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ram.core</groupId>
    <artifactId>SpringDemo</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>SpringDemo</name>
    <url>http://maven.apache.org</url>

    <properties>
        <spring.version>5.0.5.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <!-- Spring 5 dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
    </dependencies>
</project>

MedicalInsurence.java

package com.ram.model;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component("medicalInsurence")
public class MedicalInsurence
{
    @Value("1919191")
    private int insurencePolicyNumber;

    @Value("15000")
    private int insuredAmount;

    public int getInsurencePolicyNumber()
    {
        return insurencePolicyNumber;
    }

    public void setInsurencePolicyNumber(int insurencePolicyNumber)
    {
        this.insurencePolicyNumber = insurencePolicyNumber;
    }

    public int getInsuredAmount()
    {
        return insuredAmount;
    }

    public void setInsuredAmount(int insuredAmount)
    {
        this.insuredAmount = insuredAmount;
    }

    @Override
    public String toString()
    {
        return "MedicalInsurence [insurencePolicyNumber="
                + insurencePolicyNumber + ", insuredAmount=" + insuredAmount
                + "]";
    }

}

Employee.java

package com.ram.model;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component("employee")
public class Employee
{
   
    @Value("100")
    private int id;
   
    @Value("Peter")
    private String name;

    @Value("#{medicalInsurence.insuredAmount == 10000}")
    private boolean insuredAmountEqualTo10000;
   
    @Value("#{medicalInsurence.insuredAmount != 10000}")
    private boolean insuredAmountNotEqualTo10000;
   
    @Value("#{medicalInsurence.insuredAmount lt 10000}")
    private boolean insuredAmountLessThan10000;
   
    @Value("#{medicalInsurence.insuredAmount le 10000}")
    private boolean insuredAmountLessThanOrEqualTo10000;
   
    @Value("#{medicalInsurence.insuredAmount gt 10000}")
    private boolean insuredAmountGreaterThan10000;
   
    @Value("#{medicalInsurence.insuredAmount ge 10000}")
    private boolean insuredAmountGreaterThanOrEqualTo10000;

    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 boolean isInsuredAmountEqualTo10000()
    {
        return insuredAmountEqualTo10000;
    }

    public void setInsuredAmountEqualTo10000(boolean insuredAmountEqualTo10000)
    {
        this.insuredAmountEqualTo10000 = insuredAmountEqualTo10000;
    }

    public boolean isInsuredAmountNotEqualTo10000()
    {
        return insuredAmountNotEqualTo10000;
    }

    public void setInsuredAmountNotEqualTo10000(
            boolean insuredAmountNotEqualTo10000)
    {
        this.insuredAmountNotEqualTo10000 = insuredAmountNotEqualTo10000;
    }

    public boolean isInsuredAmountLessThan10000()
    {
        return insuredAmountLessThan10000;
    }

    public void setInsuredAmountLessThan10000(
            boolean insuredAmountLessThan10000)
    {
        this.insuredAmountLessThan10000 = insuredAmountLessThan10000;
    }

    public boolean isInsuredAmountLessThanOrEqualTo10000()
    {
        return insuredAmountLessThanOrEqualTo10000;
    }

    public void setInsuredAmountLessThanOrEqualTo10000(
            boolean insuredAmountLessThanOrEqualTo10000)
    {
        this.insuredAmountLessThanOrEqualTo10000 = insuredAmountLessThanOrEqualTo10000;
    }

    public boolean isInsuredAmountGreaterThan10000()
    {
        return insuredAmountGreaterThan10000;
    }

    public void setInsuredAmountGreaterThan10000(
            boolean insuredAmountGreaterThan10000)
    {
        this.insuredAmountGreaterThan10000 = insuredAmountGreaterThan10000;
    }

    public boolean isInsuredAmountGreaterThanOrEqualTo10000()
    {
        return insuredAmountGreaterThanOrEqualTo10000;
    }

    public void setInsuredAmountGreaterThanOrEqualTo10000(
            boolean insuredAmountGreaterThanOrEqualTo10000)
    {
        this.insuredAmountGreaterThanOrEqualTo10000 = insuredAmountGreaterThanOrEqualTo10000;
    }

    @Override
    public String toString()
    {
        return "Employee [id=" + id + ", name=" + name
                + ", insuredAmountEqualTo10000=" + insuredAmountEqualTo10000
                + ", insuredAmountNotEqualTo10000="
                + insuredAmountNotEqualTo10000 + ", insuredAmountLessThan10000="
                + insuredAmountLessThan10000
                + ", insuredAmountLessThanOrEqualTo10000="
                + insuredAmountLessThanOrEqualTo10000
                + ", insuredAmountGreaterThan10000="
                + insuredAmountGreaterThan10000
                + ", insuredAmountGreaterThanOrEqualTo10000="
                + insuredAmountGreaterThanOrEqualTo10000 + "]";
    }

}

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.3.xsd">

    <context:component-scan base-package="com.ram" />

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ram.model.Employee;
import com.ram.model.MedicalInsurence;

public class App
{
    public static void main(String[] args)
    {
        ApplicationContext context = new ClassPathXmlApplicationContext(
                "applicationContext.xml");

        System.out.println("---------------------------------------");

        MedicalInsurence medicalInsurence = (MedicalInsurence) context
                .getBean("medicalInsurence");
        System.out.println(medicalInsurence+"\n");

        Employee employee = (Employee) context.getBean("employee");
        System.out.println(employee);
    }

}

Output

Sep 12, 2018 10:29:00 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@736e9adb: startup date [Wed Sep 12 10:29:00 IST 2018]; root of context hierarchy
Sep 12, 2018 10:29:00 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
---------------------------------------
MedicalInsurence [insurencePolicyNumber=1919191, insuredAmount=15000]

Employee [id=100, name=Peter, insuredAmountEqualTo10000=false, insuredAmountNotEqualTo10000=true, insuredAmountLessThan10000=false, insuredAmountLessThanOrEqualTo10000=false, insuredAmountGreaterThan10000=true, insuredAmountGreaterThanOrEqualTo10000=true]

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/SpringDemo_Spring%20EL_Relational_Op_Annotation.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/javaee/tree/master/Spring_2018/SpringDemo_Spring%20EL_Relational_Op_Annotation

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/e9c84a0f943aefbd0dd1e4776d7594927120b0b9/Spring_2018/SpringDemo_Spring%20EL_Relational_Op_Annotation/?at=master

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