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  • Differences between a conceptual UML class diagram and an ERD?

    - by Adam
    If I create a conceptual class diagram such that each class captures 'name' and 'attributes' but not 'operations', have I not basically created what would be otherwise considered an ERD? I'm trying to gain an understanding of what the differences are between creating a conceptual class diagram as I have described versus calling it a ERD? If these are still two different animals, can somebody please explain what the differences are?

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  • Scrapy - Follow RSS links

    - by Tupak Goliam
    Hello, I was wondering if anyone ever tried to extract/follow RSS links using SgmlLinkExtractor/CrawlSpider. I can't get it to work... I am using the following rule: rules = ( Rule(SgmlLinkExtractor(tags=('link',), attrs=False), follow=True, callback='parse_article'), ) (having in mind that rss links are located in the link tag). I am not sure how to tell SgmlLinkExtractor to extract the text() of the link and not to search the attributes ... Any help is welcome, Thanks in advance

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  • Need help with SQL Query

    - by StackOverflowNewbie
    Say I have 2 tables: Person - Id - Name PersonAttribute - Id - PersonId - Name - Value Further, let's say that each person had 2 attributes (say, gender and age). A sample record would be like this: Person->Id = 1 Person->Name = 'John Doe' PersonAttribute->Id = 1 PersonAttribute->PersonId = 1 PersonAttribute->Name = 'Gender' PersonAttribute->Value = 'Male' PersonAttribute->Id = 2 PersonAttribute->PersonId = 1 PersonAttribute->Name = 'Age' PersonAttribute->Value = '30' Question: how do I query this such that I get a result like this: 'John Doe', 'Male', '30'

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  • Ruby: Having trouble pulling data from this class

    - by Shpigford
    So here's the output of inspect on a class: <Recurly::BillingInfo::CreditCard:0x1036a8a98 @prefix_options={}, @attributes={"month"=>1, "last_four"=>"1", "type"=>"bogus", "year"=>2010}> I'm trying to get the type attribute but seems that might be some sort of reserved word? Here's the full rundown of what I'm trying to do @charges = Recurly::BillingInfo.find('123') @charges.credit_card.type So, how can I get type from that?

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  • Simple C# USING statement for folder

    - by salvationishere
    I am developing a VS 2008 web application in C#. I am trying to include a namespace that is stored in one of my folders. So instead of: using ADONET_namespace it is stored in "Admins" folder. How do I modify this aspx.cs file to include Admins/ADONET_namespace? Currently I get following error from aspx.cs file: The type or namespace name 'ADONET_namespace' could not be found (are you missing a using directive or an assembly reference?)

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  • WCF Architectural Debate

    - by Matt Ruwe
    When building a WCF service for a large scale application, which is better: In both cases, assume that the business logic layer is separated into a different assembly. Using your business logic layer as a service implementation i.e. with no code behind and no wrapper <%@ ServiceHost Language="CS" Service="MyApp.BusinessLogic.BusLogicImpl" %> or Using the codebehind of the WCF service that wraps calls into your business logic layer. <%@ ServiceHost Language="CS" Service="MyApp.WebServiceHost.Service" CodeBehind="Service.svc.cs" %>

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  • Asp.net Build error?

    - by Surya sasidhar
    hi, when i run the my asp.net application it is showing this message can u help me. Could not load file or assembly 'System.Web.Extensions.Design, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

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  • MySQL SELECT Statment issue

    - by mouthpiec
    Hi, I have the following query which returns 2 tuples SELECT bar_id, bar_name, town_name, bar_telephone, subscription_type_id, type FROM towns, subscriptiontype, regions, bar LEFT JOIN barpictures bp ON bar.bar_id = bp.bar_id_fk WHERE town_id = town_id_fk AND bar.test_field = 0 AND subscription_type_id = subscription_type_id_fk AND region_id = region_id_fk AND (type like 'logo%' OR type IS NULL) The main difference between the tuples is that one has 'type' = logo and the other tuple has 'type' = logo_large. I need that instead of having two tuples, I need that I have 2 type attributes, one holding the "logo" and the other the "logo_large" eg bar_id, bar_name, town_name, bar_telephone, subscription_type_id, type1, type2 is this possible

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  • nokogiri vs hpricot?

    - by roshan
    Which one would you choose? My important attributes are (not in order) Support & Future enhancements Community & general knowledge base (on the Internet) Comprehensive (i.e proven to parse a wide range of *.*ml pages) Performance Memory Footprint (runtime, not the code-base)

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  • How to handle choice field with JPA 2, Hibernate 3.5

    - by phmr
    I have an entity with Integer attributes that looks like this in proto code: class MyEntity: String name Integer frequency Integer type def getFrequency() def getType() get* accessors return strings according to this table. value(type) HumanReadableString(type) 1 BSD 2 Apache 3 GPL min frequency max frequency HumanReadableString(frequency) 0 1000 rare 1000 2000 frequent 2001 3000 sexy It should be possible to get all possible values that an attribute can take, example: getChoices(MyEntity, "type") returns ("rare", "frequent", "sexy") It should be possible to get the bound value from the string: getValue(MyEntity, "frequency", "sexy") returns (2000,3000)

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  • How to perform duplicate key validation using entlib (or DataAnnotations), MVC, and Repository pattern

    - by olivehour
    I have a set of ASP.NET 4 projects that culminate in an MVC (3 RC2) app. The solution uses Unity and EntLib Validation for cross-cutting dependency injection and validation. Both are working great for injecting repository and service layer implementations. However, I can't figure out how to do duplicate key validation. For example, when a user registers, we want to make sure they don't pick a UserID that someone else is already using. For this type of validation, the validating object must have a repository reference... or some other way to get an IQueryable / IEnumerable reference to check against other rows already in the DB. What I have is a UserMetadata class that has all of the property setters and getters for a user, along with all of the appropriate DataAnnotations and EntLib Validation attributes. There is also a UserEntity class implemented using EF4 POCO Entity Generator templates. The UserEntity depends on UserMetadata, because it has a MetadataTypeAttribute. I also have a UserViewModel class that has the same exact MetadataType attribute. This way, I can apply the same validation rules, via attributes, to both the entity and viewmodel. There are no concrete references to the Repository classes whatsoever. All repositories are injected using Unity. There is also a service layer that gets dependency injection. In the MVC project, service layer implementation classes are injected into the Controller classes (the controller classes only contain service layer interface references). Unity then injects the Repository implementations into the service layer classes (service classes also only contain interface references). I've experimented with the DataAnnotations CustomValidationAttribute in the metadata class. The problem with this is the validation method must be static, and the method cannot instantiate a repository implementation directly. My repository interface is IRepository, and I have only one single repository implementation class defined as EntityRepository for all domain objects. To instantiate a repository explicitly I would need to say new EntityRepository(), which would result in a circular dependency graph: UserMetadata [depends on] DuplicateUserIDValidator [depends on] UserEntity [depends on] UserMetadata. I've also tried creating a custom EntLib Validator along with a custom validation attribute. Here I don't have the same problem with a static method. I think I could get this to work if I could just figure out how to make Unity inject my EntityRepository into the validator class... which I can't. Right now, all of the validation code is in my Metadata class library, since that's where the custom validation attribute would go. Any ideas on how to perform validations that need to check against the current repository state? Can Unity be used to inject a dependency into a lower-layer class library?

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  • jquery selecting element by data attribute

    - by zizo
    Is there an easy and straight-forward method to select elements based on their data attribute? For example, select all anchors that has data attribute named customerID which has value of 22. I am kind of hesitant to use rel or other attributes to store such information, but I find it much harder to select an element based on what data is stored in it. Thanks!

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  • HtmlHelper does not contain definition for "Action"

    - by ognjenb
    I use <%= Html.Action("ReadXML") % and have this error: 'System.Web.Mvc.HtmlHelper' does not contain a definition for 'Action' and no extension method 'Action' accepting a first argument of type 'System.Web.Mvc.HtmlHelper' could be found (are you missing a using directive or an assembly reference?) How fix it

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  • Post-Render Fbml (Ajax Callback)

    - by fabian
    Hi there, i am doing a simple ajax call with FBJS. The server returns a fbml string which i render in one of my DIVs. The Problem: FB doesnt render the prefix for attributes like style, onclick etc. I have seen a function for some kind of post-rendering somewhere. But i cant remember Thanks for helping.

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  • Extract new image dimensions from timthumb

    - by jonthoughtit
    I'm using timthumb to resize my images because it scales them nicely if I only enter one of the dimensions. However I want to know if it's possible to extract the new resized image's dimensions so that I can add that dynamically to the img tag attributes. I tried this with no luck: $fullpath = '/lib/timthumb.php?src='.$image.'&w=100'; $my_image = array_values(getimagesize($fullpath)); list($width, $height, $type, $attr) = $my_image; Any ideas?

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  • Error that i get from my program on customer computer

    - by Gold
    hi i have C# program that works with Oracle 11g when it works on my computer all works excellent but when its run on the customer computer - the connection to Oracle work good but when i try to run any Crystal-Report i get this error: Could not load file or assembly 'CrystalDecisions.windows.forms.version = 10.5.3700.0. culture = neutral.publicKey Token = 69fbea5521e1304 or one of its dependencies. The system cannot find the specified thank's for any help

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  • log4net initialisation

    - by Ruben Bartelink
    I've looked hard for duplicates but have to ask the following, no matter how basic it may seem, to get it clear once and for all! In a fresh Console app using log4net version 1.2.10.0 on VS28KSP1 on 64 bit W7, I have the following code:- using log4net; using log4net.Config; namespace ConsoleApplication1 { class Program { static readonly ILog _log = LogManager.GetLogger(typeof(Program)); static void Main(string[] args) { _log.Info("Ran"); } } } In my app.config, I have: <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" /> </configSections> <log4net> <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender"> <file value="Program.log" /> <lockingModel type="log4net.Appender.FileAppender+MinimalLock" /> <appendToFile value="true" /> <rollingStyle value="Size" /> <maxSizeRollBackups value="10" /> <maximumFileSize value="1MB" /> <staticLogFileName value="true" /> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="[%username] %date [%thread] %-5level %logger [%property{NDC}] - %message%newline" /> </layout> </appender> <root> <level value="DEBUG" /> <appender-ref ref="RollingFileAppender" /> </root> </log4net> </configuration> This doesnt write anything, unless I either add an attribute: [ assembly:XmlConfigurator ] Or explicitly initialise it in Main(): _log.Info("This will not go to the log"); XmlConfigurator.Configure(); _log.Info("Ran"); This raises the following questions: I'm almost certain I've seen it working somewhere on some version of log4net without the addition of the assembly attribute or call in Main. Can someone assure me I'm not imagining that? Can someone please point me to where in the doc it explicitly states that both the config section and the initialisation hook are required - hopefully with an explanation of when this changed, if it did? I can easily imagine why this might be the policy -- having the initialisation step explicit to avoid surprises etc., it's just that I seem to recall this not always being the case... (And normally I have the config in a separate file, which generally takes configsections out of the picture)

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  • Magento user created attribute for products is not saved...

    - by Elzo Valugi
    I am fighting an apparently simple thing for about two days now. I hope somebody can help. I created the myUpdate EAV attribute class Company_Module_Model_Resource_Eav_Mysql4_Setup extends Mage_Eav_Model_Entity_Setup { public function getDefaultEntities() { return array( 'catalog_product' => array( 'entity_model' => 'catalog/product', 'attribute_model' => 'catalog/resource_eav_attribute', 'table' => 'catalog/product', 'additional_attribute_table' => 'catalog/eav_attribute', 'entity_attribute_collection' => 'catalog/product_attribute_collection', 'attributes' => array( 'my_update' => array( 'label' => 'My timestamp', 'type' => 'datetime', 'input' => 'date', 'default' => '', 'class' => 'validate-date', 'backend' => 'eav/entity_attribute_backend_datetime', 'frontend' => '', 'table' => '', 'source' => '', 'global' => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_GLOBAL, 'visible' => true, 'required' => false, 'user_defined' => true, 'searchable' => false, 'filterable' => false, 'comparable' => false, 'visible_on_front' => false, 'visible_in_advanced_search' => false, 'unique' => false, 'apply_to' => 'simple', ) ) ) ); } } The attribute is created OK and on install appears correctly in the list of attributes. Later I do // for product 1 $product->setMyUpdate($stringDate); // string this format: yyyy-MM-dd HH:mm:ss $product->save(); // and saves without issues * in admin module But later when I do: $product = Mage::getModel('catalog/product')->load(1); var_dump($product->getMyUpdate()); // returns null Somehow the data is not really saved.. or I am not retrieving it correctly. Please advice on how to get the data and where the data is saved in the DB so I can check at if the insert is done correctly. Thanks.

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