extends – Tarik Billa

Hibernate @Embeddable class which extends another @Embeddable class, Properties not found for @OneToMany mapping

January 2, 2024 by Tarik

You can implement inheritance between @Embeddable classes. You just have to annotate the parent class with @MappedSuperclass too. So, e.g.: @Embeddable @MappedSuperclass public class Parent { @Basic private String parentProperty; // … getters/setters } @Embeddable public class Child extends Parent { @Basic private String childProperty; // … getters/setters } This way Hibernate (tested with 5.x) … Read more

C++ equivalent of using for a java parameter/return type

January 1, 2024 by Tarik

Technically, as the other answers show, there are ways to restrict it to subtypes of a certain type at compile time. However, most of the time, you would just do template <typename T> T foo(T bar) {…} without needing to specify a bound. In Java, bounds are needed for generics because the generic class or … Read more

Extending Protobuf Messages

December 7, 2023 by Tarik

This is not the exact answer to your question but we can do something like this to share common parameters. message Child1 { required int c1 = 2; required string c2 = 3; } message Child2 { required int c1 = 2; required string c2 = 3; } message Request { required string common1 = … Read more

PHPUnit 6.1.x throws array_merge() error when my test class uses its own constructor method

August 29, 2023 by Tarik

extends class and implements interface in java

August 13, 2023 by Tarik

extends should go before implements: class Sub extends Super implements Colorable {}

How to merge objects?

August 6, 2023 by Tarik

Copy var src = { name: ‘Apple’, price: 5}; var dst= angular.copy(src); deep copy Extend: var mergedObject = angular.extend(dst, src1, src2, …) shallow copy Merge: var mergedObject = angular.merge(dst, src); since angular 1.4+ deep (recursively) copy If you want to not overwrite with null, you can use this. Object.assign(): let movie2 = Object.assign({}, movie1, { … Read more

how to extend service with dependencies in angular 2

July 31, 2023 by Tarik

The parameters of the super class need to be repeated and passed to the super call: @Injectable() export class ChildService extends ParentService{ constructor (http:Http, customService:CustomService){ super(http, customService); } } There are some “hacks” to work around like Inheritance and dependency injection

PHP – extended __construct

June 10, 2023 by Tarik

The parent __construct() method defined in class b will run automatically if you instantiate child class a, unless there is a __construct() method defined in class a. class a extends b { } class b { public function __construct() { echo ‘In B Constructor’; } } $x = new a(); If a __construct() method is … Read more

extends and implements in one class in TypeScript

June 9, 2023 by Tarik

in runtime i get this Uncaught ReferenceError: MyBaseClass is not defined Yes you can do that. The code you posted will work fine. However I suspect in your actual code you have it split across multiple files and MyBaseClass is not executed before the code for MyClass. Fix JavaScript ordering or use external modules to … Read more

Java why interface extends interface

May 6, 2023 by Tarik

The significant reasons depend entirely on what the interface is supposed to do. If you have an interface Vehicle and an interface Drivable it stands to reason that all vehicles are drivable. Without interface inheritance every different kind of car class is going to require class ChevyVolt implements Vehicle, Drivable class FordEscort implements Vehicle, Drivable … Read more