Action Guide

public class ActionDemo {
    /**
     * Some descriptions
     *
     * @param a The first number
     * @param b The second number
     * */
    @AuraEnabled
    @action
    public static Integer add(Integer a, Integer b) {
        return a + b;
    }
}

public class ActionDemo {
    private static Action.Registry registry = new Action.Registry();

    static {
        registry.action(new AddAction());
    }

    @AuraEnabled
    public static Object invoke(String name, Map args) {
        return registry.invoke(name, args);
    }

    @AuraEnabled
    public static Map apiDescriptorForLightning() {
        return registry.actions;
    }

    /**
     * Some descriptions
     *
     * @param a The first number
     * @param b The second number
     * */
    private class AddAction extends Action {
        public AddAction() {
            super('add');
            param('a', Integer.class, 'The first number');
            param('b', Integer.class, 'The second number');

        }
        public override Object execAction(Object arg0, Object arg1) {
            Integer a = (Integer)arg0;
            Integer b = (Integer)arg1;

            return a + b;
        }
    }
}