extend

So for this project I am trying to extend a class at runtime. What I would like to know, is this even possible? If so, how would I do it? Are there libraries out there for these things? CGLib is a library you're looking for. It's quite powerfull in extending classes or implementing interfaces in runtime, so many popular frameworks, like Spring or Hibernate use it. You can create class extension with code like public Object createProxy(Class targetClass) { Enhancer enhancer = new Enhancer(); enhancer.setSuperclass(targetClass); enhancer.setCallback(NoOp.INSTANCE); return enhancer.create(); }

I have a type User . Users can also be a type TeamMember . The only difference between a User and TeamMember is an added field teamRole: String . So, I’d love to do something like the following to avoid having to redundantly define all the user's fields… type User { id: ID!, name: String, (many other field defs) } type TeamMember extends User { teamRole: String, } Anyone aware of a syntax for this? I thought extend would be the answer, but it seems more like javascript’s prototype extend is great if you have a base schema and want to build two or more usable schemas based on it. You can, for

I'm thinking this must be a common problem but can't seem to find the solution. Using JSON config files to extend a jQuery object that contains objects and arrays. For the objects and simple properties, I want to overwrite (as extend does nicely). For the arrays there may or may not be existing items. Currently an array just overwrites the first elements var sourceObj = {propterty:"change Me",anArray:[{name:"first"},{name:"second"}]}, configJSON = '{"propterty":"New Val","anArray":[{"name":"third"}]}', configObj = JSON.parse(configJSON); $.extend(true,sourceObj,configObj); http://jsfiddle.net

I want to extend from a "AbstractBase_step" class in java. So I want to have a hook like: public abstract class AbstractBase_Steps { protected Scenario scenario; @Before public void background(Scenario scenario) { this.scenario = scenario; } } which is called for every step file: public abstract class Hello_Steps extends AbstractBase_Steps { } When I do this I get cucumber.runtime.CucumberException: You're not allowed to extend classes that define Step Definitions or hooks. class Hello_Steps extends class AbstractBase_Steps Does somebody has a trick for that? EDIT: For reusing same step

I have trouble understanding how the include and the extend relationships work. Let's say i have an online application for shopping. The application allows you to add/retrieve items from your cart without being authenticated. Here is the "order" scenario: The client clicks on the order button. The system checks if the user is authenticated. If the user is authenticated the system displays the purchase page otherwise the user is redirected to the authentication page. I would like to know if i the "authentication" use case is included in the "order" use case and if so why ? (I'm asking this