mohashari

 @Query(value = "SELECT new com.monggopesen.mainservice.valueobject.Levels(l1.name , l2.name , l3.name ) FROM Category AS l3 \n" +
            "LEFT JOIN Category AS l2 ON l3.parent = l2.secureId \n" +
            "LEFT JOIN Category AS l1 ON l2.parent = l1.secureId \n" +
            "WHERE l3.secureId = :secureId")
    Levels findBreadCrumbLevel3(@Param("secureId") String secureId);

    @Query(value = "SELECT new com.monggopesen.mainservice.valueobject.Levels(l1.name , l2.name ) FROM Category AS l2 \n" +
            "LEFT JOIN Category AS l1 ON l2.parent = l1.secureId \n" +
            "WHERE l2.secureId = :secureId")
    Levels findBreadCrumbLevel2(@Param("secureId") String secureId);

mohashari

public class Levels {

    private String level1;
    private String level2;
    private String level3;
    
    
    //setter getter here
}

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@Test
    public void whenSetRating_Then_RatingDetail_Total_Increment() {
        reviewItem = new ReviewItem(5);
        review.addReviewItem(reviewItem);
        assertAll(
                () -> assertEquals(1, review.findRatingDetailByRatingGroup(5).getTotal(), 0),
                () -> assertNotEquals(1, review.findRatingDetailByRatingGroup(2).getTotal(), 0),
                () -> {
                    reviewItem = new ReviewItem(5);
                    review.addReviewItem(reviewItem);

mohashari

package designpattern.singleton;

public class DbHelper {


    private static Connection connection;

    public static Connection getConnection() {
        if (connection == null)
            connection = new Connection("localhost", "root", "root");

mohashari

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

mohashari

spring.datasource.url=jdbc:postgresql://localhost/myDatabase
spring.datasource.username=user
spring.datasource.password=password
spring.datasource.driverClassName=org.postgresql.Driver

spring.jpa.hibernate.hbm2ddl.auto=update
spring.jpa.hibernate.ejb.naming_strategy=org.hibernate.cfg.EJB3NamingStrategy
spring.jpa.hibernate.show_sql=true
spring.jpa.hibernate.format_sql=true
spring.jpa.hibernate.use_sql_comments=false

mohashari

FROM node:20.11-alpine3.19@sha256:abc123...

mohashari

apiVersion: apps/v1
kind: Deployment
metadata:
  name: api-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
      app: my-api
  template:

mohashari

{
  "data": [...],
  "meta": {
    "total": 1543,
    "page": 2,
    "per_page": 20,
    "next_cursor": "eyJpZCI6MTIwfQ"
  }
}

mohashari

# One request instead of 5
query DashboardData {
  currentUser {
    name
    recentOrders(limit: 10) {
      id
      total
      status
      items { name quantity }
    }