Questions tagged [reflection]

Reflection is the process by which a program can observe and modify its own structure and behavior at runtime.

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12
votes
1answer
805 views

Corrupting Java arithmetic through reflection

Inspired by a PPCG answer, I wrote this code, which shuffles the autoboxing caches of Number subclasses. This leads to, among other things, outputting ...
7
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1answer
381 views

Milking a COM type library: “fun” with COM reflection

Once upon a time, there was a duck that wanted to know where and how user code was calling into the VBA standard library and Excel object model. To match the rest of its API, the poor little duck had ...
4
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2answers
52 views

Storing disassembled data in a structured way

I want to store the information returned by the dis function of the dis module in a structured way, using a dict, associating the mnemonics of each code of a line to the correspondent line number. ...
3
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1answer
106 views

Property validation

I require that the Feature set of my Licence to have a non-empty intersection with a set of features that the module I am ...
2
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0answers
582 views

Pagination links for various lists using Spring-HATEOAS

I'm using Spring HATEOAS to create some links on my REST API. However, the entities i'm returning are very close, so the code to generate the links are the same: ...
10
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3answers
2k views

Tracking Entity Changes (not EF)

So, I kept refactoring my Sage300 API wrapper - I wanted the client code to feel just like using Entity Framework - this is the closest I got to it: ...
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0answers
163 views

Saving the state of a ViewModel

I've the following scenario, I've got some viewmodel that need to persist their state on disk. I've defined a custom attribute as: ...
3
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3answers
3k views

Reflection optimization

In a web application I'm working on I have a class that Map objects to other (different) objects. It is implemented with something like: ...
10
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1answer
210 views

Linq-to-Sage Implementation

Following-up on my last question where I wrapped the Sage API with a familiar IRepository interface, I decided to push the abstraction a step further, and... ...
5
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2answers
1k views

Method/parameter tracer

I am writing a class which can log the activity of an application during run time. The plan is that the SupportMI string will be sent to a DB, from where I can use ...
6
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1answer
72 views

Wrapping the Sage300 View API with… a Repository

Related: Something like a LINQ provider I needed to work with the Sage300 View API. I had never worked with it, but my first impression has been that the API is ...
3
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0answers
70 views

Request handler based solely on reflections ver. 2

This question is connected to the previous one: Request handler based solely on reflections I have edited the code, taking tim's answer in regard, editing the Kernel class cohesion. ...
3
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1answer
73 views

Request handler based solely on reflections

The code itself is divided into 3 logical parts: Core modules (I call them Kernel modules, my love for Linux) - those are basic modules a web-developer would need, e.g. database wrapper class (PDO), <...
14
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2answers
12k views

Extension method to list enum values

I have the following enum extension method: ...
7
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1answer
263 views

NullGuard for throwing more informative exceptions

This small utility class is my solution for a more convenient way for checking against null. I also wanted to have more informative NullReferenceExceptions but I ...
5
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1answer
207 views

How to refactor this mapping class not to violate SOLID

So I have the below (which is working correctly and all my unit tests are passing) but it's ugly and is violating SOLID, I will have to change the class every time I want to be able to map a different ...
11
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3answers
831 views

Give me thy name, I'll invoke thee

This generic function invokes a property of a given object by name: ...
11
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4answers
4k views

Using reflection in a test to check if a private variable is really null after a function, is this okay?

I am using reflection to check if a private variable is set to null after the logout function. This is needed because the getUser function will always attempt to set and return an user if no user is ...
0
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1answer
81 views

Creating instance of all classes that have certain attribut value

I have a simple custom attribute MessageDeliveryAttribute that has one string filed. Also I have several classes that mark with this attribute like: ...
2
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1answer
98 views

Looking up alias using inspect in Python

I'm on a quest for making a good debug_print() method for printing out debug information in some of my private projects. When testing I aliased my ...
5
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2answers
720 views

“Better” Exception with autogenerated message

Because I don't like writing the same useless exeption messages all the time ;-) I thought I create a better exception that would make this for me. This is what I came up with: ...
6
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1answer
118 views

A C function for returning the address of the calling function

Suppose you are given two functions, foo and bar, and neither of them are inlined. Now, if ...
5
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2answers
4k views

Generic toString() for JPA base entity class

In a Java/JPA project I usually define a base class (on which I put the id). The goal is to implement an generic toString() on this base class (named BaseEntity) from which all other entities inherit. ...
1
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1answer
129 views

Map all symbols in module to dictionary

The div and add functions are located randomly in my package structure. I have a function with this signature: ...
3
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2answers
37k views

Getting a list of all fields in an object

I've got the following code that I use to output a list of all (public) fields in an object in an easy(ish) to read way. The issue with it is that the code is not easy to look at, and I'm not sure ...
3
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2answers
763 views

IEnumerable extension method that ingests SqlCommand and returns query results

The following ingests a preexisting SqlCommand and returns the values. A couple caveats right now. 1 ) Type properties must be named identical to the SQL column ...
2
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1answer
4k views

Getting translated string using reflection and Resource Manager

I wrote the following code to get the translated string from Resource Manager. The method GetTranslatedString is called more than 50 times in my project. ...
3
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1answer
9k views

Redis Object storage and conversion

I am stepping into a new realm with this project, Reflection. I have written some working code (below) that will potentially store POCO objects in a redis cache (and eventually backed by Table or ...
2
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2answers
94 views

Method for finding all classes

This was inspired by a Stack Overflow question about getting all the classes of an application and I took it a little too seriously (or perhaps not seriously enough). It's rather silly to do it this ...
10
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3answers
3k views

Listing human-readable enums

I'm trying to do some util class to operate on enums - convert Enums to its special strings representation via interface method. String stored in enum constructors. ...
1
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1answer
2k views

Create Form Controls based on the properties of a class

Is there a better way to create Form Controls for properties of a class? Right now, I iterate through all properties of a class and have a method to create the Form Control for that property based on ...
7
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2answers
555 views

Strict types decorator (works only with Python 3.5)

I wrote a decorator which makes Python 3.5 raise exceptions if the arguments that are passed to a type-hinted function are of the wrong type. ...
2
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1answer
617 views

Method that return related entities using OData

There is method GetFull that should use OData return related entities. When I call GetFull(12, "entity1,entity2") then I will ...
2
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1answer
44 views

Find foreign key membership including owner in SQL Server

Was hoping someone could sanity-check this SQL statement. I need to find the owner (schema), table, and column on both sides of a foreign key: ...
6
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2answers
15k views

Setting the value of properties via reflection

I am working on an application in which I have to parse an XML file. Nodes of the XML file corresponds to an object. I have to populate the properties of the objects at run time. The code below ...
5
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1answer
115 views

Generating controls based on PropertyInfo

This is a class that takes a PropertyInfo and makes a Control for it. You can access the value of the control through a property on the class called Value. ...
6
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1answer
3k views

Getting all public constants from the main and nested classes

I wrote this recursive function to get all constants from a class and its subclasses. Can it be simplified? ...
5
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1answer
99 views

Project Euler: Autorun problems

I've found that it's a huge pain to have to write the boilerplate code for each Project Euler problem I write (timing code, main method, what about running every problem instead of just one?). So I ...
8
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1answer
1k views

Dynamic data object generation

Last weekend I had an idea: Why not remove dozens of classes by removing all the basic get/set/equals/hashCode implementation of my data object interfaces? I tend to code against interfaces, so I ...
4
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0answers
77 views

Creating companion classes that are `inherited` onto any sub-classes

The idea for the code I have written came about due to the acts_as_versioned gem which automatically nests a Version class onto ...
3
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2answers
390 views

Set Game State from String

Before I used reflection to invoke a state based on the string, it looked like this: ...
3
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4answers
2k views

Python Decorator - inspecting function argument values

Some of my functions use a "fail_silently" flag. It is used in the following way: ...
6
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2answers
2k views

Recursively merge dictionaries with generic types in C#

I am looking to implement a method that is capable of merging 2 dictionaries using generics. I've seen several great answers on SO already, but none handle the case of nested dictionaries. As in, what ...
2
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0answers
12k views

Retrieving Primary Key from Entity Framework entity

Entity Framework (version 6) generates classes based on your tables that look like this (where each property represents a field in the table): ...
7
votes
1answer
3k views

JSON serializer using generics rather than System.Object

I recently created a custom static class in C# to encode, hopefully, any object it is given (or collection of objects), because I was, at the time, unaware of a native C# library that did the same ...
4
votes
1answer
109 views

Porting a web-based POS system to Android

I'm currently porting a web-based POS system to Android. The Android version uses NavigationDrawer to navigate between menus. What I need a code review on is my ...
4
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3answers
3k views

Property Mapping with Reflection efficiency

I have an object that I am populating via mapping and lookup with Reflection: ...
2
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2answers
902 views

config.properties, Static Classes and Reflection

I wanted an opinion about an idea I had regarding the use of config.properties, static classes and the use of reflection. I have to load some preferences at application startup, for that I will be ...
6
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2answers
233 views

Building in the built-in declarations

In order for Rubberduck to be able to "recognize" the built-in VBA functions, procedures and objects, I added yet another constructor parameter to my Declaration ...
9
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2answers
2k views

Optimize a generic foreach method that converts Datatable to my object using Reflection

I need to optimize this code block below, this method converts a Datatable object to the Object that I am passing by parameter, in another words, this serializes the object, however I have to run this ...