object-model

Load a previous model version

由 我只是一个虾纸丫 提交于 2019-12-04 17:13:21
问题 I am loading a NSManagedObjectModel model with the initWithContentsOfURL: constructor like this: NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"MyDocument" withExtension:@"momd"]; NSManagedObjectModel *mom = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL]; However this only gives me access to the latest/current version of a model. Is it posible to load previous versions with the same momd file? how? 回答1: Actually you can load an older version with: -

What are the *actual* steps in ruby's method lookup?

由 纵然是瞬间 提交于 2019-12-03 10:58:30
问题 I've read stackoverflow posts on this topic as well as several articles which include A Primer on Ruby Method Lookup, What is the method lookup path in Ruby. In addition, I checked out the object model chapter in Ruby Metaprogramming 2 , asked in a few chat rooms, and made this reddit thread. Short of learning C, I've done what I can to figure this out. As described by the resources above, these 6 places are checked (in order) during method lookup on a receiving object like fido_instance:

What's the difference between data model and object model?

由 匆匆过客 提交于 2019-12-03 05:13:42
问题 CWM is data modeling UML is object modeling. Can someone explain the difference that a layman can understand? 回答1: Object Model: deals with object oriented "blue-print" of your system. This includes, class diagrams (classes you will be creating), relationship between these classes, methods in the classes, properties etc. Data model: deals with entities at the database level. Like how the classes in the OM will get stored in the database, in which tables etc. So DM deals with Table schema,

How do I get started designing and implementing a script interface for my .NET application?

由 不羁岁月 提交于 2019-12-03 03:42:08
问题 How do I get started designing and implementing a script interface for my .NET application? There is VSTA (the .NET equivalent of VBA for COM), but as far as I understand I would have to pay a license fee for every installation of my application. It is an open source the application so this will not work. There is also e.g. the embedding of interpreters (IronPython?), but I don't understand how this would allow exposing an "object model" (see below) to external (or internal) scripts. Sub

What are the *actual* steps in ruby's method lookup?

由 怎甘沉沦 提交于 2019-12-03 00:35:40
I've read stackoverflow posts on this topic as well as several articles which include A Primer on Ruby Method Lookup , What is the method lookup path in Ruby . In addition, I checked out the object model chapter in Ruby Metaprogramming 2 , asked in a few chat rooms, and made this reddit thread . Short of learning C, I've done what I can to figure this out. As described by the resources above, these 6 places are checked (in order) during method lookup on a receiving object like fido_instance : singleton class of fido_instance IClass (from an extended module) IClass (from a prepended module)

How do I get started designing and implementing a script interface for my .NET application?

由 好久不见. 提交于 2019-12-02 15:48:11
How do I get started designing and implementing a script interface for my .NET application? There is VSTA (the .NET equivalent of VBA for COM ), but as far as I understand I would have to pay a license fee for every installation of my application. It is an open source the application so this will not work. There is also e.g. the embedding of interpreters (IronPython?), but I don't understand how this would allow exposing an "object model" (see below) to external (or internal) scripts. Sub-questions: What is the scripting interface story in .NET? Is it somehow trivial to do this in .NET? E.g.

A good HTML object model in Java?

由 拥有回忆 提交于 2019-12-01 21:45:15
问题 I'm looking for an HTML object model in Java, capable of parsing HTML (not required) and containing all HTML elements (and CSS as well) in an elegant object model. I'm looking for a pure java version of the Groovy's HTML builder. (I have no luck on google with this request.) I want to be able to perform stuff like: HTML html = new HTML(); Body body = html.body(); Table table body.addTable(myCssStyle); Row row = table.addRow("a", "b", "c").withCss(cssRowStyle); and so on... 回答1: Jakarta ECS

Multilingual data modeling on MongoDB

由 非 Y 不嫁゛ 提交于 2019-12-01 02:49:36
I am trying to model my objects on MonogoDB and not sure how to proceed. I am building a Product catalog that will be: No frequent changes to product catalog. A bulk operation may be done weekly / fortnight. Product information is in multiple languages ( English, Spanish , French ) new language may be added anytime. Here is what I am trying to do: I need to model my product catalog to capture the multilingual functionality. Assume I have: product : { _id:xxx, sku:"23456", name:"Name", description: "Product details", tags:["x1","x2"]}... } Surely, name,description, tags and possible images will

HL7 object model for .NET [closed]

由 那年仲夏 提交于 2019-11-30 10:19:46
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 months ago . Searching for a library or framework that would provide an object model, parsing, validating, etc The idea would be to be able to spin up a new object of type hl7 v2 or v3. Then perhaps call it message type ORU_R01 or ADT, or ORM. Wouldn't life be great if we were able to do something like this: HL7V2 myMessage

Multilingual data modeling on MongoDB

由 最后都变了- 提交于 2019-11-30 08:55:34
问题 I am trying to model my objects on MonogoDB and not sure how to proceed. I am building a Product catalog that will be: No frequent changes to product catalog. A bulk operation may be done weekly / fortnight. Product information is in multiple languages ( English, Spanish , French ) new language may be added anytime. Here is what I am trying to do: I need to model my product catalog to capture the multilingual functionality. Assume I have: product : { _id:xxx, sku:"23456", name:"Name",
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