entities

LINQ to Entities Join on DateTime.DayOfWeek

由 北城以北 提交于 2020-01-03 09:23:08
问题 Imagine two tables: Shifts, RANK_S_DAY. Shifts contains a ShiftDate column which is DateTime and RANK_S_DAY has a DayOfWeek column. I need to join (int)ShiftDate.DayOfWeek equals DayOfWeek . I understand why it won't work, but I'm not quite sure how I can change it. The Exception is: The specified type member 'DayOfWeek' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported. As I understand it, LINQ can't translate (int

Is there some functionality in/for Delphi that converts a string with html named and numbered entities to unicode text?

由 六眼飞鱼酱① 提交于 2020-01-01 11:26:49
问题 I read data from a mysql database that has is filled by php scripts. All special characters are converted to named or numbered html entities (for example & a m p ; & # 2 8 6 ;). I know of no way to convert these characters back to the original ones in Delphi as unicode strings. Did anyone ever find or even create such a function? This would be very helpful to me. Thanks! Marc 回答1: In Delphi 2007 there is a unit called HTTPApp.pas (in [Delphi Folder]\Source\Win32\Internet) that has the

DDD: what's the use of the difference between entities and value objects?

由 你。 提交于 2020-01-01 05:20:14
问题 Entities and value objects are both domain objects. What's the use of knowing the distinction between the two in DDD? Eg does thinking about domain objects as being either an entity or value object foster a cleaner domain model? 回答1: Yes, it is very helpful to be able to tell the difference, particularly when you are designing and implementing your types. One of the main differences is when it comes to dealing with equality, since Entities should have quite different behavior than Value

The type or namespace name 'Objects' does not exist in the namespace 'System.Data'

由 |▌冷眼眸甩不掉的悲伤 提交于 2019-12-29 11:32:34
问题 I am using entities, C# and SQL Server to create an n-tier app. I am creating some base classes common to all my DAL components. In this base class, i want to handle the connection state of the ObjectContext base class inherited by entities object. Compiling throws the following error: The type or namespace name 'Objects' does not exist in the namespace 'System.Data' (are you missing an assembly reference?) Also, the using statement System.Data.Objects doesn't resolve for the same reason. I

Is there a way to keep entities intact while parsing html with DomDocument?

由 旧时模样 提交于 2019-12-28 16:03:30
问题 I have this function to ensure every img tag has absolute URL: function absoluteSrc($html, $encoding = 'utf-8') { $dom = new DOMDocument(); // Workaround to use proper encoding $prehtml = "<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset={$encoding}\"></head><body>"; $posthtml = "</body></html>"; if($dom->loadHTML( $prehtml . trim($html) . $posthtml)){ foreach($dom->getElementsByTagName('img') as $img){ if($img instanceof DOMElement){ $src = $img->getAttribute('src')

How to determine order of colums in table?

由 一笑奈何 提交于 2019-12-25 06:57:56
问题 I defined an Symfony2 entity class and I want to create the corresponding table in my database. This works fine thanks to the command 'php app/console doctrine:schema:update --force'. But the order of the columns isn't equal to the order in my class. Any way to get them in the same order? 来源： https://stackoverflow.com/questions/27283284/how-to-determine-order-of-colums-in-table

Doctrine many-to-many relations and onFlush event

由 核能气质少年 提交于 2019-12-24 10:56:11
问题 Little example about Books and Authors: DB structure: Entities (they were generated form database using symfony2 console commands): Author: /** * Author * * @ORM\Table(name="authors") * @ORM\Entity */ class Author { private $_isCachable = true; /** * @var integer * * @ORM\Column(name="id", type="integer", nullable=false) * @ORM\Id * @ORM\GeneratedValue(strategy="IDENTITY") */ private $id; /** * @var string * * @ORM\Column(name="name", type="string", length=255, nullable=false) */ private

Drupal Commerce Order object extra data

由 ぐ巨炮叔叔 提交于 2019-12-24 00:53:44
问题 How might it be possible to get Commerce-Product-Display information in a Commerce-Order object? The issue is I need to publish a Commerce-Product-Display node when a user has made a payment to publish the node. I am using Rules to detect the payment and attempt to publish the node. My problem is, because the Completing the checkout process Rules event only has data for a Commerce-Order, and the Commerce-Order does not have information for the Product nor the Product display, I am unable to

Sprint boot with JPA - Error creating bean name 'entityManagerFactory' - jdbcUrl is required with driverClassName

由 感情迁移 提交于 2019-12-23 17:41:23
问题 I'm creating a spring boot application that will save JPA entities to a postgres database hosted on Heroku (localhost first to get stuff going faster). I've been at this for days trying to figure it out, so now I'm biting the bullet and asking for help. My application.propreties file looks like this: spring.datasource.url=postgres://localhost:5432/mydb spring.datasource.username=myuser spring.datasource.password=mypass spring.datasource.driverClassName=org.postgresql.Driver spring.datasource

What is the difference between an Entity, Entity Set and Attributes?

由 若如初见. 提交于 2019-12-23 04:45:41
问题 While doing a homework for a class I suddenly found myself stumped by a sentence: The work must also contain at least 4 additional entities(not tables) with meaningful data . I had to create an example database for a museum, for cataloging various pieces, assigning themes to them, and creating expositions by themes. Each of these tables already must have 10 entries, so I am quite confused what could be asked by the 4 additional entities.. Help? 回答1: In my experience the two have always been
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