Tags for questions related to validating data.

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0answers
13 views

I have data how do I choose which files go within my test, cross validation and training sets? [on hold]

I have data stored in a file structure as replicated below. I am using the data for a text classification system for each general category, and within each category I have different sources for my ...
0
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0answers
37 views

Spring Boot Hibernate and JSR 303 - response formatting [migrated]

Sifting through forums I can't seem to stumble into an issue solution I've been haveing with Spring Boot + JPA and JSR303 bean validation. Simply put validation works but but when say ...
1
vote
2answers
96 views

Pattern for validating rules having different signatures

I have a class in charge of responding to an input event and maybe triggering another event. To decide, it has several rules to check. I'm trying to get away from a class looking like this: public ...
2
votes
1answer
52 views

Use of validators for simple validations

I've been working in Liferay code, and I've come across this construct a few times: List<?> list; ... if (Validator.isNotNull(list)) { //do stuff }} The source code for Validator.java ...
0
votes
1answer
56 views

Always set form input max length?

Background I'm looking to put together a single page web application with many form inputs. I've run into issues with other web pages where there is an ugly SQL error sent to the user if the ...
7
votes
2answers
460 views

What is best practice to handle whitespaces when letting the user edit the configuration, the name=value pairs?

For instance, you let the user define the notorious path variable. How do you interpret apppath = C:\Program Files\App? This looks like a programming language adopted practice to ignore the white ...
1
vote
0answers
62 views

How to consume inconsistent REST API with Mongo DB backend?

We are using a third party REST API and we are building one of the pages on our ASP.NET site around the data it delivers. We get results in JSON, and interact with it mostly using .NET MongoDB Driver. ...
0
votes
3answers
108 views

Coerce bad input or always crash early

The general consensus seems to favor the Crash Early approach, the most reputable source being the acclaimed Pragmatic Programmer book. And while I understand and agree with the advice in many ...
1
vote
2answers
267 views

Why all consider UAT a validation activity? It contradicts the original idea

Virtually any book dealing with software testing mentions that user acceptance testing (UAT) is an ultimate validation activity, often quoting Boehms informal definition: "Validation: Are building the ...
1
vote
4answers
270 views

Domain Model, validation, and pushing errors to the model

Looking into DDD and something I noticed is that business logic should be in the model, otherwise you just have property bags. That said how do you handle pieces of validation that require a trip to ...
4
votes
8answers
346 views

Do objects with validation logic in their domain really represent their real world counterparts?

I asked a question about whether validation behavior should be treated the same as other types of behavior in regard to the concept of OOP being "data + behavior". I got some good answers back that ...
3
votes
3answers
338 views

OOP: Behavior + Data, but what about 'validation' behaviors?

EDIT: Thanks for all the great answers! In reading these responses I realized that I'm approaching this from the wrong angle so I wrote a new question here. I had this discussion with my superior ...
3
votes
1answer
138 views

Difference between patterns: Specification, Guarding, Conditions, Monads, Validation,

I'm currently trying to get my head around a few patterns (especially the ones mentioned in the title above) that are made to address different problems and are being used in different parts of the ...
-1
votes
1answer
100 views

Is there a set of standards for data validation rules? [closed]

I'm trying to develop a generic data validation engine for web forms. Basically, the idea is to write a library that loads a JSON "validation schema", and then generates the appropriate server-side ...
3
votes
2answers
187 views

Should I throw guard exceptions that will be thrown by internal methods anyway? [duplicate]

I have some fairly simple code (C#): /// <summary> /// Truncates a string to a maximum length. /// </summary> /// <param name="value"> The string to truncate. ...
0
votes
0answers
19 views

A scheme to check only one namespace in an XML document

I want to validate an XML document against some XML scheme, but ignore all elements (and probably attributes) which are not of a given namespace. Does such a XML scheme language exist?
1
vote
2answers
156 views

Where should the “not empty field” validation code be written on a 3-layer application?

When working with the 3-layer model, where should the validation code be placed? for: not empty fields, unchecked options, null values, wrong-written dates, etc. To keep total isolation between a ...
1
vote
2answers
105 views

Writing a simple code validator

I know that programming languages can be defined in EBNF which can be converted into regular expressions. Right now I am working on a very simple BASIC interpreter for a project. The code has to be ...
3
votes
2answers
321 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
60 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
417 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
156 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
82 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
110 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 ...
5
votes
4answers
792 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 ...
2
votes
2answers
175 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 ...
1
vote
2answers
144 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
177 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 ...
3
votes
4answers
3k 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
63 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
572 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
179 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
1k 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
850 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 ...
0
votes
4answers
145 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
1k 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. ...
6
votes
6answers
1k 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
881 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
1k 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
223 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
300 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
1k 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
639 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
879 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
349 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
301 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 ...
3
votes
6answers
2k 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
386 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, ...
6
votes
2answers
1k 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 ...
11
votes
7answers
4k 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 ...