Tags for questions related to validating data.

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2
votes
1answer
81 views

Where to put format validation in a CQRS “stylish” domain model?

It feels right to put format validation inside the domain objects (VOs or entities) because it is the natural place for high cohesion and the domain knows best what every domain ...
1
vote
2answers
33 views

Property value validations on POCO entities

Sorry in advance if this question is so trivial. The situation There is a Customer entity whose ID is limited to two letters (A to Z) in the database. Also, a user can enter the ID value from a ...
1
vote
1answer
35 views

Presenter accessing the value in text box using sender object

I have following method in my presenters which validates the user inputs on the UI. Basically to capture the value of the text property of the text box, it uses sender object which was passed in by ...
0
votes
0answers
37 views

UI Field validation in MVP pattern

I want to validate the details provided by the user before taking them into the processing. My UIs have Text boxes, Combos mainly and, there are some fields that user must provide a data, in some ...
0
votes
0answers
37 views

What should a domain object's validation cover?

I'm trying to figure out how to do validation of domain objects that need external resources, such as data mappers/dao Firstly here's my code class User { const INVALID_ID = 1; const ...
3
votes
4answers
90 views

Can I save & store a user's submission in a way that proves that the data has not been altered, and that the timestamp is accurate?

There are many situations where the validity of the timestamp attached to a certain post (submission of information) might be invaluable for the post owner's legal usage. I'm not looking for a service ...
2
votes
4answers
191 views

Managing client-side and server-side validations in one place

I'm 100% on board with the case that one should definitely use both client-side and server-side data validations. However, in the frameworks and environments I've worked in, the approaches I've seen ...
0
votes
0answers
64 views

WPF Control Lifeycle and Navigating through Containers to set Focus

I wanted to understand a control's lifecycle in WPF. Let me explain my scenario: I have a complex screen containing various container controls hosting forms. Let's say my screen has 3 Accordion ...
2
votes
2answers
114 views

Allowing enum to express a valid combination of values

Suppose in a manufacturing environment, there are certain stock materials available for use in a product. For example, there are only a few different sizes of copper tube, each having a specific ...
0
votes
0answers
72 views

Model Driven Design with Bean Validation

If I have a rich domain library that gets included into a Java web application, but I want to achieve a level of dependency isolation with that domain library such that it is possible to build and ...
1
vote
2answers
97 views

Is input validation necessary?

This is a very naive question about input validation in general. I'm a MATLAB user (1.5 years old) and I learned about input validation techniques such as "parse" and "validatestring". In fact, ...
0
votes
1answer
99 views

DataSet Validation vs. ASP.NET MVC Validation

I have a general question on where to put validation. I have an asp.net mvc that gets/sets data from/to a DataSet. Currently, the fields in the form are validated by the form itself (e.g. for ...
2
votes
4answers
1k views

Best way of validating Class properties

Background: I have a CSV file, which I need to ready and validate each element in each row and create a collection of a class, having valid data. i.e CSV File looks like: ...
0
votes
1answer
58 views

How to prevent re-checking already-checked data?

I have a class with a validId($id) method that is called by the constructor and by public function load($id). The method queries the database to see if the id exists and returns true/false. The ...
1
vote
2answers
301 views

How can I write complex validation and business logic that can be reused in both direct data model changes and pending dialog changes?

I was hoping for some advice: I need to design a software solution for a medium-sized java / Swing application. The application will have about 200 use cases requiring complex data validation and ...
1
vote
2answers
166 views

Setter Validation can affect performance?

In a scenario where you use an ORM to map your entities to the DB and you have setter validations (nullable, date lower than today validation, etc), every time the ORM gets a result, it will pass into ...
3
votes
2answers
624 views

Validation and data persistence in a domain model

My (first and current) workplace (a .NET shop) suffers from an over-abundance of anemic domain models, to the extent that I don't really know how validation and data persistence should be handled in a ...
1
vote
1answer
433 views

Where to validate domain model rules that depend on database content?

I'm working on a system that allows Administrators to define Forms that contain Fields. The defined Forms are then used to enter data to the system. Sometimes the Forms are filled by a human via a ...
1
vote
4answers
134 views

Should user input of a contact form be validated?

On software company websites I visit the first time, I often open the "Contact us" page and try to submit the contact form with all fields empty. I am just curios if they validate the user input. If ...
7
votes
1answer
748 views

Duck typing, data validation and assertive programming in Python

About duck typing: Duck typing is aided by habitually not testing for the type of arguments in method and function bodies, relying on documentation, clear code and testing to ensure correct use. ...
7
votes
6answers
928 views

If the model is validating the data, shouldn't it throw exceptions on bad input?

Reading this SO question it seems that throwing exceptions for validating user input is frowned upon. But who should validate this data? In my applications, all validations are done in the business ...
12
votes
5answers
863 views

Strengthening code with possibly useless exception handling

Is it a good practice to implement useless exception handling, just in case another part of the code is not coded correctly? Basic example A simple one, so I don't loose everybody :). Let's say I'm ...
5
votes
8answers
873 views

Best Practice for Argument Checking

Say I have a web service with a method MyWebServiceMethod(string passedValue). The web service calls a method MyServiceMethod(string passedValue) where the value from the web service is passed along. ...
3
votes
3answers
175 views

Complex Mutual Exclusion Validation Logic

I need to validate some form inputs in complex way. E.g. <select id="options" multiple="multiple"> <option>A</option> <option>B</option> ...
2
votes
3answers
284 views

Approach to use for user email address change in application?

As the title says, if the user wants change their email address in the application, in terms of programming, what approach (process) to use? Where do you store the new email address until the user ...
2
votes
5answers
719 views

Why validate XML?

I am looking for an explanation on just why XML needs to be validated. I have been testing DTD's and Schema's for the past month and recently tried to find out why I am doing this. I know it makes the ...
0
votes
3answers
497 views

Form validation and file structure

I have a form (lets say a registration form) and onsubmit, it calls a function to validate as follows: $.ajax({ url : "/ajax/validate.php", type : "POST", data : ...
0
votes
2answers
567 views

What is the best practice for method parameter validation in a library? [closed]

I develop a game library in javascript, containing many classes. I hesitate on the behavior that I should follow concerning method parameter validation: Should I check the validity of parameters ...
4
votes
2answers
228 views

Design strategies for storing and validating serial numbers

We are writing software to track Foo Widgets. Each Foo Widget has a serial number. The serial number is an 32-character alphanumeric string. The string is separated into five sets. Each set is ...
2
votes
2answers
244 views

How do you track third party services SSL certificates?

Recently Windows Azure Storage SSL certificate unexpectedly expired and since a lot of dependent services defaulted to "refuse to connect to a site with expired SSL certificate" that became a serious ...
2
votes
6answers
1k views

Validation of the input parameter in caller: code duplication?

Where is the best place to validate input parameters of function: in caller or in function itself? As I would like to improve my coding style, I try to find the best practices or some rules for this ...
1
vote
1answer
326 views

What is a practical level of abstraction in a web application? [closed]

(Originally asked on StackOverflow - http://stackoverflow.com/questions/14896121/what-is-a-practical-level-of-abstraction-in-a-web-application) I still consider myself a newcomer to OO programming, ...
5
votes
2answers
724 views

How is the Trial Period for Softwares generally implemented?

I was always under the assumption that trial softwares write a registry value of the installation date and then the software makes a comparison of the current date of the system with the remaining ...
7
votes
7answers
3k views

When should pointers be checked for NULL in C?

Summary: Should a function in C always check to make sure it is not dereferencing a NULL pointer? If not when is it appropriate to skip these checks? Details: I've been reading some books about ...
4
votes
1answer
574 views

MVC Pattern - How to get errors from the model to the controller?

Say I have a typical MVC setup. The controller passes on some input to the model, and asks it to do something with it. But the validation of the data fails, or there is some other problem. What's the ...
2
votes
2answers
682 views

Validating Objects With XSDs: Is Re-Serializing Redundant or Negligible?

Context: I've got a web service that deals with request / response objects. There are strict, externally-defined schemas constraining both the structure and the content of both requests and ...
8
votes
1answer
316 views

Better to use error monad with validation in your monadic functions, or implement your own monad with validation directly in your bind?

I'm wondering what's better design wise for usability/maintainability, and what's better as far as fitting with the community. Given the data model: type Name = String data Amount = Out | Some | ...
1
vote
2answers
307 views

Class structure/pattern for validating several different Excel templates?

I'm trying to validate the contents of Excel sheets that follow several different templates. For each one, there are three possible validation actions for various cells: Regex (e.g. "XYZ-123" fails ...
4
votes
3answers
189 views

Name for sanitizing at the right time?

Recently we had an issue on our site where someone attempted SQL injection via a cookie (we'll call it lastID). NOC was in a frenzy and angry about how the cookie as an attack vector could be ...
1
vote
2answers
190 views

Referential integrity in a database where tuples are not physically deleted

Many modern Relational Database Management Systems automatically support referential integrity, i.e. when you try to delete a tuple which has a reference (in the form of foreign key, for example), the ...
2
votes
1answer
2k views

Mobile number validation

I am trying to find best way to validate a mobile number with in a country. Currently my understanding is: User can enter whatever format they want in mobile numbers and its a waste of time and ...
4
votes
2answers
156 views

How to properly include field validation in a Software Documenation

I'm developing a software documentation in a project, and much of it are just CRUD or CRUD based functions. As you can imagine, a lot of the rules are constraints about fields validation, things like ...
6
votes
4answers
707 views

Validating User Stories: How much change is too much?

While the core of requirements development and acceptance criteria would ideally take place during the planning meeting in order to create a better estimate, Scrum encourages continuous interaction ...
1
vote
3answers
400 views

Why some consider static analysis a testing and some do not?

Preparing myself also to ISTQB certification, I found they call static analysis actually as a static testing, while some engineering book distinct between static analysis and testing, which is the ...
1
vote
3answers
549 views

System testing - making sure the system conforms to specification. Validation? [closed]

After weeks of research I have nearly completed my thesis, yet I am unable to clear up my confusion contained in all previous threads here (and in many books): During system testing, we check the ...
2
votes
2answers
224 views

Validation and Verification explanation (Boehm) - I cannot understand its point

Hopefully my last thread about V&V as I found the B.Boehm is text which I just do not understand well (likely my technical English is not that good). ...
-1
votes
1answer
472 views

Are Verification and Validation both Quality Assurance and Quality Control?

Having read a book I found a note that verification and validation can be both quality assurance and quality control. I cannot see how it can be quality assurance because both just provide evidence ...
1
vote
4answers
9k views

How to apply verification and validation on the following example

I have been following verification and validation questions here with my colleagues, yet we are unable to see the slight differences, probably caused by language barrier in technical English. An ...
5
votes
4answers
275 views

Can data classes contain methods for validation?

OK, say I have a data class for a user: public class User { private String firstName; private String lastName; private long personCode; private Date birthDate; private Gender gender; private String ...
5
votes
2answers
599 views

Is server validation necessary with client-side validators?

I recently created a .net web app that used over 200 custom validators on one page. I wrote code for both ClientValidationFunction and OnServerValidate which results in a ton of repetitive code. My ...