WAS 6.1 java.lang.VerifyError: class loading constraint violated

The environment is WAS 6.1 on Linux, deploying a webapp that uses classes from xercesImpl.jar. Due to company policy restrictions, the app must be deployed with settings: Class Loader Order ...

Rename Primary Key constraint on MySQL

I think this might be a bug with MySQL, but I'm not sure. Anyone can tell me how can I create a primary key for a table and then rename the primary constraint? If possible already create the...

Drawing a simple 2D graph in java

I got a below java code which plots a 2D graph where x axis has values 1,2,3,......20 and y axis has values 21,14,18..........18 The code works perfectly but the only problem is that the graph...

The INSERT statement conflicted with the FOREIGN KEY constraint error

Hi I'm getting this error The INSERT statement conflicted with the FOREIGN KEY constraint "FK_dbo.AspNetUsers_dbo.Contacts_ContactID". The conflict occurred in database...

How to programmatically create a 'database create script'?

Question In SQL Server Manager 2008/2012 it is possible to create a a complete clone of an existing database. Is there a way to generate this kind of script programmatically? [Database] -> Right...

Difference between Low-Level and High-Level Feature Detection/ Extraction

According to this Wikipedia article Feature Extraction examples for Low-Level algorithms are Edge Detection, Corner Detection etc. But what are High-Level algorithms? I only found this quote from...

Java embedded jetty is accepting HTTP TRACE method

I'm trying to disable HTTP TRACE method in embedded Jetty. In Jetty doc's is info that HTTP trace is disabled by default, but for embedded it is still enabled. I was trying to disable trace as a...

Cannot add or update a child row: a foreign key constraint fails - Bidirectional mapping in hibernate

Hi I have a problem with JPA... DB: Java classes (irrelevant fields are ommited): User: @Entity public class User{ @Id private int iduser; //bi-directional many-to-one association to...

Liquibase Java, changesets don't apply

I'm currently building a project for my internship, and I'm stuck since two days trying to use Liquibase in java. Everything seems right : the changelog file is found, correct URI, username and...

UNIQUE constraint failed: mytable.hostName

I have created my own table called mytable in sqlite and want to capture content of a list of my hosts and write them into table. I can get content of pages with python-requests but while reaching...

Android Room FOREIGN KEY constraint failed

I'm trying to design and implement a folder tree structure in Android SQLite with help of Android Room Persistence (an ORM) which Google introduced in I/O 2017. In my design, a folder can contain...

Django: "Cannot add foreign key constraint" when creating test tables before running unit tests

I am trying to run unit tests that I've written for my Django project, but testing fails at the database creation stage. I have a single database "test", one of which as a foreign key relationship...

Conditional Statement on Java7

Hello i just started a coding exercise on hackerrank and i am having a little challenge using scanner class with the skip function. here is what i have tried. Objective In this challenge, we're...

Is there a way to seamlessly transfer docker-compose containers to another host without building?

I'm setting up a CI/CD solution. I would like to run a docker application on a production machine that has no access to the internet. The constraints are as follows: Build needs to happen on...

Flutter DatabaseException(UNIQUE constraint failed)

I`m trying to insert some data into sqflite table but there is an error while executing insert query await db.execute( 'CREATE TABLE $catrgoryTable($category_id INTEGER PRIMARY KEY UNIQUE ,...

How do I change names programmatically to tell apart UIViews in Xcode visual debugger?

How do I rename views in Xcode visual debugger? It's a sea of UIViews so it's nearly impossible to tell which uiview a constraint is for. UIViewControllers show titles while for UIViews unless...

UIButton width doesn't increase based on text if insets are given

I have given trailing, top and height constraints to the button. As you can see in the attached screenshot, if I remove all the insets given, then button looks perfect and button fits based on...

Django trying to save object with existing primary key

Today something strange happened. I'm importing data from a payment gateway after request: for signature in response.json: Signature.objects.get_or_create(**signature) json example: [ ...

Problem: Shortest path in a grid between multiple point with a constraint

Problem description: I'm trying to solve a problem on the internet and I wasn't able to pass all testcases, well, because my logic is flawed and incorrect. The flaw: I assumed starting to the...

How to efficiently run multiple Pytorch Processes / Models at once ? Traceback: The paging file is too small for this operation to complete

Background I have a very small network which I want to test with different random seeds. The network barely uses 1% of my GPUs compute power so i could in theory run 50 processes at once to try...

How to differentiate causes of SQLAlchemy's IntegrityError?

SQLAlchemy appears to just throw a general IntegrityError when there is a data integrity problem with a transaction. Of course, the exact query and error message are contained in the exception,...

Better than brute force algorithms for a coin-flipping game

I have a problem and I feel like there should be a well-known algorithm for solving it that's better than just brute force, but I can't think of one, so I'm asking here. The problem is as follows:...

Is there something like ConstraintLayout's "dimensionRatio" property in Jetpack Compose?

I wanna constraint the Image's start to parent's start, top to top, end to end when its width/height is 4/3, just like app:layout_constraintDimensionRatio="H,3:4" in Android Xml. Here's my code...

Go: how to not remove double quotes on cookies

Go removes double quotes in cookies. The delimiter appears to be semi colon plus space. How do I put double quotes in a cookie in Go? For example, I'm sending a small JSON message that Go is...

Row with two Text in Constraint fashion in Jetpack Compose

I want to include two Text in a Row where the first Text's width is upto the start of 2nd Text, like this I am trying Modifier weight but the result achieved is not the same. Is there a way to do...

ERROR 3780: Referencing column and referenced column in foreign key constraint are incompatible

I created a schema in MySQL 8.0 named hr. I'm creating two tables: one is locations and the other one departments, which has a foreign key referencing the table locations. create table...

In the ompr package in R, how can I rephrase my objective/constraints/variables so as to avoid the "problem too large" error?

I am trying to learn to fit a linear integer programming optimization model in R using the ompr package that a colleague had previously fit using CPLEX/GAMS (specifically, the one described here:...

Treatment of constraints in SLSQP optimization with openMDAO

With openMDAO, I am using FD derivatives and trying to solve a non-linearly constrained optimization problem with the SLSQP method. Any time the optimizer arrives at a point that violates one of...

Acceptable way to get around a UNIQUE w NULL constraint?

I have a table as follows: I would like to add a UNIQUE KEY on (connection_id, parent_container_id, name). However, parent_container_id and connection_id are a disjoin union -- the record must...

Check how many rectangles cover a point

I have a list of points [[1,2], [2,3], [1,5]] each point represents a rectangle with dimensions [0,0], [x, 0], [0, y], [x,y]. Here for example for [1,2], x =1 and y = 2 so rectangle dimentions are...