AC : new customer registration 
    Given the application is running on the cli mode 
    When the application shows the options 
        1. Register new user 
        2. login to the system 
        3. exit 
    When the user selects option 1 
    Then accept email, password, confirm password, dob, city state, etc 
    When the details are validate like password should have 1 special char 
    And email should have @ symbol 
    And dob should be 18 years or old 
    And city should be in india 
    Then store the record in database 
    And show message "Your registration successful"  

    <emps> 
        <emp>
            <empid>101</empid>
            <empname>Naveen</empname>
            <age>40</age>
        <emp>

        <emp>
            <empid>101</empid>
            <empname>Naveen</empname>
            <age>40</age>
        <emp>
    </emps>

<dependencies>

<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-api</artifactId>
    <version>5.10.1</version>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>org.junit.jupiter1</groupId>
    <artifactId>junit-jupiter-api1</artifactId>
    <version>5.10.11</version>
    <scope>test1</scope>
</dependency>

</dependencies>

<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.30</version>
    <scope>test</scope> -- what if i need conditionally ? 
</dependency>



--- 


sourceCompatibility = [1.8, 9, 10, 17]
targetCompatibility = 1.8

- continues development 
- continues integration 

pipeline {
    agent any 
    stages {
        stage('Build') { 
            steps {
                echo "In the build process" 
            }
        }
        stage('Test') { 
            steps {
                echo "In the build test" 
            }
        }
        stage('Deploy') { 
            steps {
                echo "In the build deploy" 
            }
        }
    }
}

- mohit 

{
    name: "mohit", 
    city: "Bengaluru", 
    state: "karnataka", 
    accountNo : 12345, 
    accountBalance : 332211, 
    accountBranch : "MG Road"
}

- Gaurav 

{
    id: 101, 
    name: {
        first:"Gaurav", 
        last:"Kumar"
    }, 
    address: {
        houseNo: 1243, 
        street: "some Blvd" , 
        city: "Mysuru", 
        state: "Karnataka"

    }, 
    insurance : {
        familyMembers: {
            member1:{
                relation:"father", 
                name:"Father Name", 
                age: 44,
                address:  {

                }, 
                member2:{
                    relation:"father", 
                    name:"Father Name", 
                    age: 44,
                    address:  {
                        
                    }
            }
            }
        }
    }
}

    - syntax 
    > db.emps.find({selection}, {projection}); 


    > db.emps.find({empsal:{$gt: 10000}}); 

-- sal > 10000 & city bengaluru 
    > db.emps.find({empsal:{$gt:10000}, city:{$eq:'Bengaluru'}})



-- sal > 10000 or city bengaluru 
    > db.emps.find({$or:[
                {
                    empsal:{$gt:10000}
                }, 
                {
                    city:{$eq:'Bengaluru'}
                }
            ]
        }
    );

    - 1 is ascending , -1 is descending, and you can give multiple sorts 

    - in ascending 
    > db.emps.find({empsal:{$gt: 10000}}).sort({empsal:1})


    - in descending  
    > db.emps.find({empsal:{$gt: 10000}}).sort({empsal:-1})

    - in descending  and to check if empsal exists 
    > db.emps.find({empsal:{$exists:true}}).sort({empsal:-1})

    - in descending  and to check if empsal exists + limit 
    > db.emps.find({empsal:{$exists:true}}).sort({empsal:-1}).skip(1).limit(2)

 > db.emps.find(
        {empsal:{$exists:true}}, 
        {empname:1, empsal:1, _id:0}
    ).sort({empsal:-1}).skip(1).limit(2) 

    // syntax 
    > db.emps.update({condition, if you dont give condition then all records are updated}, {values to update}, {by default update will update only 1 record, if you want multiple then specify multiple true }); 


    - to identify records which does not have city and empsal more than 10000 
     and update city with bengaluru + multiple records 
    
    > db.emps.update(
        {
            city: {$exists:false}, 
            empsal: {$gt:10000}
        }, 
        {$set:{city:'Bengaluru'}},
        {multi:true}
    );

    > db.emps.update(
        {
            city: {$exists:false}, 
            empsal: {$lte:10000}
        }, 
        {$set:{city:'Mumbai'}},
        {multi:true}
    );

    - showing  multi true 


    > db.emps.update({}, {$set:{country:'India'}}, {multi:true}); 

    - if the records are matching then update if not insert 

    > db.emps.update({empname:'Neha'},{$set:{city:'Mysuru'}},{upsert:true}); 

    - use save - when _id not matching then it inserts, when matching it updates 

    - db.emps.save({"_id" : ObjectId("65e94bf13d857dfa53c4389f"), empid:110, empname:'Mohit', city:'Delhi'})

    > db.emps.remove({empid:110}); 

   > db.embedrec.save({
    id: 101, 
    name: {
        first:"Gaurav", 
        last:"Kumar"
    }, 
    address: {
        houseNo: 1243, 
        street: "some Blvd" , 
        city: "Mysuru", 
        state: "Karnataka"
    }
    });

    > db.embedrec.find({id:{$eq:101}})

    > db.embedrec.find({'name.first':{$eq:'Gaurav'}})

    > db.emps.find({empname:'siddharth'}).explain('executionStats');

    - db.emps.createIndex({empname:1})
    - db.emps.createIndex({empname:-1, city:1})