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• Is this how dynamic language copes with dynamic requirement?

  - by Amumu

  The question is in the title. I want to have my thinking verified by experienced people. You can add more or disregard my opinion, but give me a reason. Here is an example requirement: Suppose you are required to implement a fighting game. Initially, the game only includes fighters, who can attack each other. Each fighter can punch, kick or block…

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• How to make linq master detail query for 0..n relationship?

  - by JK

  Given a classic DB structure of Orders has zero or more OrderLines and OrderLine has exactly one Product, how do I write a linq query to express this? The output would be OrderNumber - OrderLine - Product Name Order-1 null null // (this order has no lines) Order-2 1 Red widget I tried this query but is not getting…

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• How to sort objects in a many-to-many relationship in ruby on rails?

  - by Kenji Kina

  I've been trying to deal with this problem for a couple of hours now and haven't been able to come up with a clean solution. It seems I'm not too good with rails... Anyway, I have the following: In code: class Article < ActiveRecord::Base has_many :line_aspects, :dependent => :destroy has_many :aspects, :through => :line_aspects …

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• [Hibernate Mapping] relationship set between table and mapping table to use joins.

  - by Matthew De'Loughry

  Hi guys, I have two table a "Module" table and a "StaffModule" I'm wanting to display a list of modules by which staff are present on the staffmodule mapping table. I've tried from Module join Staffmodule sm with ID = sm.MID with no luck, I get the following error Path Expected for join! however I thought I had the correct join too…

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• EF4. Add a object with relationship causes full table select

  - by Fujiy

  Ex 1: "autor.ComentariosWorkItens.Add(comentarioWorkItem);" autor.ComentariosWorkItens makes EF4 load all ComentariosWorkItens. Ex 2: comentarioWorkItem.Usuario = autor; Fixup make EF load all ComentariosWorkItens too: private void FixupUsuario(Usuario previousValue) { if (previousValue != null &&…

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• Django admin breaking with non-default primary_key for model with a m2m relationship ?

  - by Gj

  I have a simple Post model with a m2m field to a Tag model. The Tag had for some reason to use a non default primary key. Inside the admin page for a Post, the labels for the multiple selection field for Tags appear, but not the input field itself. I also tried using the filter_horizontal for the tags, but still only the…

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• How do map 1-to-1 relationship in grails to just 1 table under the covers?

  - by egervari

  Let's say I have a UserAccount domain class that has a UserPreferences domain class. I do this to separate the fields for organization purposes. Is there a way to tell grails/gorm that I really want it to map these domain classes to just the user_account table under the covers? Thanks!

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• How do I add a one-to-one relationship in MYSQL?

  - by alex

  +-------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+-------------+------+-----+---------+-------+ | pid | varchar(99) | YES | | NULL | | +-------+-------------+------+-----+---------+-------+ 1 row in set (0.00 sec) …

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• Which database I can used and relationship in it ??

  - by mimo-hamad

  My projece make me confused which I didn't find clear things that make me understand the required database and the relationships in it So, would a super one help me to solve it ?!! ;D this is required: 1) Model the data stored in the database (Identify the entities, roles, relationships, …

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• Django many-to-many relationship to self with extra data, how do I select from a certain direction?

  - by Jake

  I have some hierarchical data where each Set can have many members and can belong to more than one Set(group) Here are the models: class Set(models.Model): ... groups = models.ManyToManyField('self', through='Membership', symmetrical=False) members = models.ManyToManyField('self',…

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• How to dynamically order many-to-many relationship in JPA or HQl?

  - by Indrek

  I have a mapping like this: @ManyToMany(cascade = CascadeType.PERSIST) @JoinTable( name="product_product_catalog", joinColumns={@JoinColumn(name="product_catalog", referencedColumnName="product_catalog")}, inverseJoinColumns={@JoinColumn(name="product",…

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• In SqlAlchemy, how to ignore m2m relationship attributes when merge?

  - by ablmf

  There is a m2m relation in my models, User and Role. I want to merge a role, but i DO NOT want this merge has any effect on user and role relation-ship. Unfortunately, for some complicate reason, role.users if not empty. I tried to set role.users = None, but SA complains None is not a…

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• What is the relationship between MIDP and JME (and Android)?

  - by MalcomTucker

  What is the distinction between MIDP and JME? How do both relate to Android? As far as I understand JME isn't supported on Android - is that correct? Thanks

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• what's the best practice to config Hibernate-Spring for multiple database relationship?

  - by nazila

  We have a main mysql database which all of the applications within our organization need the data within this database. How can I config my java web application to use this database with it's specific database when I use Spring and Hibernate within my application? How can I config JPA…

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• Can u tell me how to display a composition & Dependency relationship in class diagrams Using VS 2008

  - by Pradeep

  i am trying to display a compostion and dependency relation ship in class diagram using vs 2008 but there are no diagrame associated with the above mention relation ship please help me with this

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• Can you write a single FetchXML query to get 1:many relationship?

  - by paulwhit

  Is it possible to write a single FetchXML query that gets a root entity and multiple children? All I've been able to do is 1:1.

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• In which controller do you put the CRUD for the child part of a relationship?

  - by uriDium

  I am using ASP.Net MVC but this probably applies to all MVC patterns in general. My problem, for example I have companies and in each company I have a list of contacts. When I have selected a company I can see its details and a list of the contacts for that company. When I want to add…

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• Visual Studio 2010 Delayed

  Developer feedback extends beta for quality reasons.

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• Visual Studio 2010 Delayed

  Developer feedback extends beta for quality reasons.

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• Object desing problem for simple school application

  - by Aragornx

  I want to create simple school application that provides grades,notes,presence,etc. for students,teachers and parents. I'm trying to design objects for this problem and I'm little bit confused - because I'm not very experienced in class designing. Some of my present objects are : …

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• Lite-Javascript Gallery - Can I position the img absolutely in relationship to the lis?

  - by blackessej

  I have a lite-javascript run image gallery. The javascript grabs each element in the list and places it as a background in the parent element. Then the CSS styles the thumbnails as small blocks with a defined height/width. A click-event for each object toggles it’s child’s …

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• How to do a one to many relationship in UML with Visual Studio 2010?

  - by devoured elysium

  I am trying to do something of the form: Is it possible at all to do it? I want to have a collection of Food objects in my MealEvent class. Thanks!

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• SQL Database Schema Design For Large 3 Billion Relationship Database.

  - by K-Bell

  Get your geek on. Can you solve this? I am designing a products database for SQL Server 2008 R2 Ed. (not Enterprise Ed.) that will be used to store custom product configurations for over 30,000 distinct products. The database will have up to 500 users at a time. Here is the…

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• Django: How can I add weight/ordering to a many to many relationship?

  - by Klaas van Schelven

  I'm having Pages with TextBlocks on them. Text Blocks may appear on different pages, pages may have several text blocks on them. Every page may have these blocks in an ordering of it's own. This can be solved by using a separate through parameter. Like so: class…

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• possible to show composition relationship in a diagram generated from PHP source code?

  - by ajsie

  i have tested several UML applications for whether they could show composition relationships in the UML diagrams generated form the PHP source code or not, and the result is they can't. i know that this is a typical problem for PHP cause we don't declare a data…

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