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• OnetoMany and ManytoMany using Grails and JPA on google app engine

  - by adddd

  I googled a lot but i find crap documentation about jpa. I had to implement a domain model like cat and dog inherit from animal, and animal has a one to many and a many to many relation. How to do that?

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• How to implement table-per-concrete-type using entity framework

  - by SDReyes

  Hello Guys! I'm mapping a set of tables that share a common set of fields: So as you can see I'm using a table-per-concrete-type strategy to map the inheritance. But... I have not could to relate them to an abstract type containing these common properties. It's possible to do it using EF? BONUS: The only non documented Entity Data Model Mapping Scenario is Table-per-concrete-type inheritance http://msdn.microsoft.com/en-us/library/cc716779.aspx : P

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• How to create XML webparts using sharepoint web services?

  - by Manish

  I have an XML to be rendered in sharepoint using a XSL file. I now the how to do this using object model of sharepoint but don't how to do this using sharepoint web services. i.e. I want to create XML web parts using sharepoint web services. Is it possible to do create XML web parts using sharepoint web services? If yes, how?

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• How to create a Link that supplies its own Markup?

  - by Aranian

  I'm trying to create a link that will hide or show a part of my page. The link should be reusable and display one of two images, depending on state. Adding the two subcomponents on every page where I use the link is kind of clunky so I wanted to create a component that behaves like a link while automatically adding its content. This is the Link component: public class ToggleVisibilityLink extends AjaxFallbackLink<Boolean> { public ToggleVisibilityLink(final String id, final IModel<Boolean> model) { super(id, model); setOutputMarkupId(true); add(new Image("collapseImage") { @Override public boolean isVisible() { return !getModelObject(); } }); add(new Image("expandImage") { @Override public boolean isVisible() { return getModelObject(); } }); } @Override public void onClick(final AjaxRequestTarget target) { setModelObject(!getModelObject()); if (target != null) { target.add(this); send(this.getParent(), Broadcast.EXACT, target); } } } And this is how I currently use it in HTML (this is added to the page or panel where I use the link): <a href="#" wicket:id="collapseExpandLink" class="collapseExpandLink"> <wicket:link> <img src="collapse.png" wicket:id="collapseImage" class="collapseExpandImage collapse"> </wicket:link> <wicket:link> <img src="expand.png" wicket:id="expandImage" class="collapseExpandImage expand"> </wicket:link> </a> And the corresponding Java call: add(new ToggleVisibilityLink("collapseExpandLink", new PropertyModel(this, "hidden"))); But I want to be able to skip the body inside the link as one would have to know about the internals of ToggleVisibilityLink. I experimented with IMarkupResourceStreamProvider, using Dynamic markup in Wicket as a starting point. By googling I found another example where the poster was only able to get that to work when using a Panel, and I was able to do that as well. But I'd really like to keep the link and not package it inside a Panel, as I would not be able to style the link in the markup. I'm also open to alternatives to encapsulate the link and its body.

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• URL redirection if wrong url

  - by xRobot

  I have this method in my book model: def get_absolute_url(self): return "/book/%s/%s/%i/%i/" % ( self.book_title, self.book_editor, self.book_pages, self.id) So the urls of each book are like this: example.com/book/the-bible/gesu-crist/938/12/ I want that if there is an error in the url, then I get redirected to the real url by using book.id in the end of the url. For example if I go to: example.com/book/A-bible/gesu-crist/938/12/ the I will get redirected to: example.com/book/the-bible/gesu-crist/938/12/ How can I do that ?

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• javancss includes problem

  - by senzacionale

  <javancss srcdir="C:\Projekti\KIS\Model\src" generateReport="true" includes="**/*.java" outputfile="docs/javancss_metrics.xml" format="xml" /> if i use includes="*/.java" then no metrics are calculated. If i delete includes then works. Any idea why?

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• Where should we manage session objects in an ASP.NET application?

  - by Kumar

  I am developing a 3-tired ASP.NET C# web application and was wondering where should the sessions be managed. I have a SessionManager class as follows: public sealed class SessionManager { private const string USER = "User"; private SessionManager() { } public static SessionManager Instance { get { return _instance; } } public User User { get { return HttpContext.Current.Session[USER] as User; } set { HttpContext.Current.Session[USER] = value; } } } Now should the session information be managed in the Business Logic Layer or should it be managed in the Presentation Layer?

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• Do AOP violate layered architecture for enterprise apps?

  - by redzedi

  The question(as stated in the title) comes to me as recently i was looking at Spring MVC 3.1 with annotation support and also considering DDD for an upcoming project. In the new Spring any POJO with its business methods can be annotated to act as controller, all the concerns that i would have addressed within a Controller class can be expressed exclusively through the annotations. So, technically i can take any class and wire it to act as controller , the java code is free from any controller specific code, hence the java code could deal with things like checking security , starting txn etc. So will such a class belong to Presentation or Application layer ?? Taking that argument even further , we can pull out things like security, txn mgmt and express them through annotations , thus the java code is now that of the domain object. Will that mean we have fused together the 2 layers? Please clarify

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• Problem in updating field in codeigniter please help

  - by pokhara

  It says , you must use the “set” method to update an entry. Pls help My model is $this->db->where('id', $this->uri->segment(3)); $this->db->update('mytable', $data); My controller is $data = $this->db->select('mytable', $_POST); $this->contact_model->model_update_function($data);

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• Where does the query language sit within the MVC pattern?

  - by weesilmania

  I'd assume that since the query language sits within the controller (typically) that it belongs to that component, but if I play devil's advocate I'd argue that the query language is execute within the domain of the model, and is tightly coupled to that component so it might also be a part of it. Anyone know the answer? Is there a straight answer or is it technology specific?

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• how to make a thread of never stop, and write something to database every 10 second..

  - by zjm1126

  i using gae and django this is my code: class LogText(db.Model): content = db.StringProperty(multiline=True) class MyThread(threading.Thread): def __init__(self,threadname): threading.Thread.__init__(self, name=threadname) def run(self,request): log=LogText() log.content=request.POST.get('content',None) log.put() def Log(request): thr = MyThread('haha') thr.run(request) return HttpResponse('')

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• How do I make non-framework code to framework code? (PHP)

  - by ggfan

  I just started using CakePHP and it's very different from just normal procedural or basic OOP PHP. I am still learning PHP and still read "beginning PHP/mysql" books that teaches you basic PHP. Also lots of sites online provide code that isn't for a framework. Is the only way to make non-framework code to say a framework, say cakePHP, by learning cakePHP thoroughly than rewriting the code yourself to fit the MVC model?

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• Hint to MVC view generator for primary key on POCOs

  - by myotherme

  When generating a strongly-typed Index view for my model I always get the following: <%= Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) %> I am using a POCO class for use with our ORM. As I understand it when using LINQ to SQL the view code will know which field is the primary key. Is there a way that I can an attribute to the property (or class) that will let the View Generator know that the ID property if the primary key?

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• doctrine cant find my BaseModels in the models/generated folder

  - by ajsie

  when i use a Doctrine Model Doctrine cant find the BaseModel in the models/generated folder. what should i put in the Doctrine bootstrap file to tell it they are in the models/generated folder? thanks!

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• How to get dynamic value from View in ViewModel?

  - by Benny

  I am coming across a scenario where I need to do something in the viewmodel according to the current selection in the view, but according to MVVM, the view model should not know about the existence of view, then how can i get the dynamic selection in the view?

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• Django Template - Convert python list into a javascript object

  - by amcashcow

  I am working on a django / python website I have a page where I want to display a table of search results The list of results is passed in to the template as normal I also want to make this list of objects accessible to the javascript code My first solution was just create another view that returned json format. But each page load required calling the query twice. So then I tried only downloading the data using the json view and printing the table using javascript. but this is also not desirable as now the presentation layer is mixed into the javascript code. is there a way to create a javascript object from the python list as the page is rendered?

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• how to get the filed mapName 's value on a form.. uding django

  - by zjm1126

  my form is class MapForm(forms.ModelForm): class Meta: model = Map fields = ('mapName', 'kmlStr') and the view is : map_form = MapForm(request.POST or None) if map_form.is_valid(): map = map_form.save(commit=False) map.mapName=map_form.mapName#is thie code right ? how to get the mapName 's value , us 'map_form.mapName' ? thanks

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• How to I make a navigation-based app?

  - by Dyldo42

  Yes, I know, most of you are thinking I'm an idiot, butt (kidding) I'm not. I've been searching everywhere for something on how to fully make a navigation-based iphone app, but all I've found is how to set up table views or navigation controllers. I haven't found anything on how to create a data model (something simple from arrays and dictionaries, SQLite and CoreData are a bit out of my scope) or navigate it. Does anyone know of any tutorials or anything like that? Thanks.

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• Fastest way to copy a set (100+) of related SQLAlchemy objects and change attribute on each one

  - by rebus

  I am developing an app that keeps track of items going in and out of factory. For example, lets say you have 3 kinds of plastic coming in, they are mixed in various ratios and then sent out as a new product. So to keep track of this I've created following database structure: This is very simplified overview of my SQLAlchemy models: IN <- RATIO <- OUT <- REPORT ITEMS -> REPORT IN are products coming in, RATIO is various information on measurements, and OUT is a final product. REPORT is basically a header model which has a lot of REPORT ITEMS attached to it, which in turn relate it to OUT products. This would all work perfectly, but IN and RATION values can change. These changes ultimately change the OUT product which would mean the REPORT values would change. So in order to change an attribute on IN object for example I should copy that object with that attribute changed. I would think this is basically a question about database normalization, because i didn't want to duplicate all the IN, RATIO and OUT information by writing it in REPORT ITEMS table for example, but I've came across this problem (well not really a problem but rather a feature I'd like for a user to have). When the attribute on IN object is changed I want related objects (RATIO and OUT) automatically copied and related to a new IN object. So I was thinking something like: Take an existing instance of model IN that needs to change (call it old_in) Create a new one out of it with some attributes changed (call it new_in) Collect all the RATIO objects that are related to old_in Copy each RATIO and relate them to a new_in Collect all the OUT objects that are related to old RATIO Copy each OUT and relate them to a new RATIO Few questions pop to mind when i look at this problem: Should i just duplicate the data, does all this copying even make sense? If it does, should i rather do it in plain SQL? If no what would be the best approach to do it with Python and SQLAlchemy? Any general answer would suffice really, at least a pointer in right direction. I really want to free then end user for hassle of having create new ratios and out products.

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• ReorderListView in WPF

  - by Philipp Schmid

  I love the controls from the Bag-Of-Tricks. I am interested in modifying the ReorderListBox control to get a ReorderListView control. However, simply changing the base class from ListBox to ListView is not working. When I try to add a ReorderListView to XAML like this: <lib:ReorderListView Grid.Row="1"> <ReorderListView.View> <GridView> <GridViewColumn Header="Data1" /> </GridView> </ReorderListView.View> </lib:ReorderListView> I get an error ("The tag 'ReorderListView.View' does not exist in XML namespace 'http://schemas.microsoft.com/winfx/2006/xaml/presentation'.) How do I modify the ReorderListBox example to get this to work? Has anyone already succeeded in doing this?

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• What does the symbol ::: mean in R

  - by Milktrader

  I came across this in the following context from B. Pfaff's "Analysis of Integrated and Cointegrated Time Series in R" ## Impulse response analysis of SVAR A-type model 1 args (vars ::: irf.svarest) 2 irf.svara <- irf (svar.A, impulse = ”y1 ” , 3 response = ”y2 ” , boot = FALSE) 4 args (vars ::: plot.varirf) 5 plot (irf.svara)

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• zend one controller many views

  - by Sherif

  hi there when i build my web site it was handling only one interface but now i need to handle many interface i can detect which site to communicate and isolate it from other sites but i stuck with this : all the sites have the same views ... is there are a way so i can rander from the same controller different views .. something like application application controller model site_1_view site_2_view is this possible ??!!

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• Logging in MVC (Zend Framework)

  - by superdario

  Is there a best-practice when it comes to where to put the logging functionality in an MVC application, for example a Zend Framework application (Zend_Log)? Should I put the logging in the controller or in the model? Or in both? If in both, should they have the same logger or a separate one?

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• What SQL query should I perform to get the result set expected?

  - by texai

  What SQL query should I perform to get the result set expected, giving the first element of the chain (2) as input data, or any of them ? table name: changes +----+---------------+---------------+ | id | new_record_id | old_record_id | +----+---------------+---------------+ | 1| 4| 2| | -- non relevant data -- | | 6| 7| 4| | -- non relevant data -- | | 11| 13| 7| | 12| 14| 13| | -- non relevant data -- | | 31| 20| 14| +----+---------------+---------------+ Result set expected: +--+ | 2| | 4| | 7| |13| |14| |20| +--+ I know I should consider change my data model, but: What if I couldn't? Thank you in advance!

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• Java Swing - Adding a row # column to a JTable

  - by llm

  I have data from a database loaded into a JTable through a custom table model. I want to have a column (should be the first column) which simply shows the display row number (i.e. it is not tied to any data (or sorting) but is simply the row number on the screen starting at 1). These "column headers" should be grayed out like the row headers. Any idea how to do this? Thanks

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