Search Results

Search found 46896 results on 1876 pages for 'temporary class'.

Page 413/1876 | < Previous Page | 409 410 411 412 413 414 415 416 417 418 419 420 | Next Page >

jboss connection pooling

- by Web

I have a question related to Prepared Steatement pooling (across all connections). Here's the config file <datasources> <local-tx-datasource> <jndi-name>JNDI-NAME</jndi-name> <connection-url>jdbc:mysql://<server_name>/<database_name>?useServerPrepStmts=true</connection-url> <driver-class>com.mysql.jdbc.Driver</driver-class> <user-name>xxx</user-name> <password>xxxxx</password> <min-pool-size>10</min-pool-size> <max-pool-size>20</max-pool-size> <idle-timeout-minutes>20</idle-timeout-minutes> <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name> <valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLValidConnectionChecker</valid-connection-checker-class-name> <background-validation>true</background-validation> <background-validation-minutes>5</background-validation-minutes> <prepared-statement-cache-size>100</prepared-statement-cache-size> <share-prepared-statements>true</share-prepared-statements>    <metadata> <type-mapping>mySQL</type-mapping> </metadata> </local-tx-datasource> </datasources> It seems that this line: <background-validation-minutes>5</background-validation-minutes> doesn't cause any problems with Prepared Statements, but: <idle-timeout-minutes>20</idle-timeout-minutes> causes that all connections are removed and re-created if there was no traffic for the last 20 minutes. Because of that existing Prepared Statements are removed from the pool of cached Prepared Statements. How to overcome this issue? I have to use idle-timeout-minutes because MySQL server closes the connection after 8h

Read the article
Why would the assignment operator ever do something different than its matching constructor?

- by Neil G

I was reading some boost code, and came across this: inline sparse_vector &assign_temporary(sparse_vector &v) { swap(v); return *this; } template<class AE> inline sparse_vector &operator=(const sparse_vector<AE> &ae) { self_type temporary(ae); return assign_temporary(temporary); } It seems to be mapping all of the constructors to assignment operators. Great. But why did C++ ever opt to make them do different things? All I can think of is scoped_ptr?

Read the article
Hibernate @DiscriminatorColumn and @DiscriminatorValue issue

- by user224270

I have this parent class: @Entity @Inheritance(strategy = InheritanceType.JOINED) @Table(name = "BSEntity") @DiscriminatorColumn(name = "resourceType", discriminatorType = DiscriminatorType.STRING, length = 32) public abstract class BaseEntity { and the subclass @Entity @Table(name = "BSCategory") @DiscriminatorValue("Category") public class CategoryEntity extends BaseEntity { But when I run the program, I get the following error: 2010-06-03 10:13:54,222 [main] WARN (org.hibernate.util.JDBCExceptionReporter:100) - SQL Error: 1364, SQLState: HY000 2010-06-03 10:13:54,222 [main] ERROR (org.hibernate.util.JDBCExceptionReporter:101) - Field 'resourceType' doesn't have a default value Any thoughts? Updated: Database is MySQL. I have also changed inheritance strategy to JOINED instead of SINGLE_TABLE. Help

Read the article
Does anyone use AMPL anymore

- by steven

I took a class on "Intelligent Decision Making" (which was mostly an Problem Optimization class). In the class we learned about AMPL and how to extend the solvers. I haven't heard much about it lately, nor have I seen job listings for it. My question is: Is AMPL still in use anymore? If so what is it being used for? Yes, I do understand that AMPL can be replaced with Matlab, however AMPL is free and Matlab isn't even close.

Read the article
Need help with Layouts in Swing

- by Malki

Hi, I'm using Java Swing and I have the following problem: I have a class TnaiPanel that extends JPanel. In this class I am creating 3 components and then lay them out in a horizontal line using a BoxLayout. Also, I have a class TnaimDinamimPanel that also extends JPanel. This class contains multiple occurances of TnaiPanel, layed out vertically using a BoxLayout. Also, I have a class MainFrame that extends JFrame. This frame contains a menu-bar and one main panel. The main panel can change (when choosing a certain menu-item, I create a new panel and set it to show as the main panel of the frame). Now, for some reason I get "BoxLayout can't be shared" when I add the newly created TnaimDinamimPanel to the components of the frame. I don't mind using different layout objects. The result I want to get is a sort of "table" of components, where each TnaiPanel will have fixed component sizes and spacing, essentially serving the role os a "row" in the "table". Thanks, Malki.

Read the article
How to Append a div with javascript inside

- by Damathryx

I have this <div id="inprog_table"> </div> I tried this to insert var div = document.getElementById('inprog_table'); div.innerHTML = div.innerHTML+ "<div class='row'> <div class='col-xs-7'> "+ $(".row.active .col-xs-7 p:first-child").text()+" </div> <div class='col-xs-2'> "+ $(".row.active .col-xs-7 p:last-child").text()+" </div> <div class='col-xs-2'> 1 </div>" inside inprog_table div. I know it's really wrong, but I don't know how to append all of this.

Read the article
jquery clone only once

- by tsiger

I have a series of divs like this: <div id="available-posts"> <div class="post" id="unique_id"> <a href="#" class="addme">Add</a> Some text </div> <div class="post" id="unique_id"> <a href="#" class="addme">Add</a> Some text </div> </div> The unique_id is a different number for each of the divs. Now i have a new empty div like this <div class="related-posts"></div> And i clone items in there. The thing is that i want to check if an item is already cloned. If it is i want to stop it from being cloned again. This is how i clone items: // clone it $('.addme').live('click', function() { $(this).parents('div.thepost').clone().fadeIn('normal').appendTo('#related-posts').find('a.addme').html('Remove').removeClass('addme').addClass('removeme'); return false; }); // remove it $('.removeme').live('click', function() { $(this).parents('div.thepost').fadeOut('normal', function() {$(this).remove(); }); return false; }); In other words i want the cloned list to contain only unique items. Not for example 2 clones of the same post. *edit: i am using live coz the first list (available posts) is populated through an AJAX call.

Read the article
css layout - break down

- by Luke

So I am trying to get the effect of having two frames inside a 750px wide frame. .news {width: 750px;} .news1 {width:550px;} .news2 {width:200px;} Very simple css at this stage. The html/php: <div class="news"> <div class="format"><a href='newspiece.php?news=<?echo $id?>'><?echo "$subject\n";?></a></div> <div class="news1"> <? echo "<div class='content'>"; echo nl2br($comment); echo "<a href='newspiece.php?news=$id'>..[read more]..</a>\n"; echo "</div>"; ?> <h5><? echo "Posted by <a href=\"userprofile.php?user=$posted\">$posted</a> on $final_date\n";?></h5> <? echo "<br />\n";?> </div> <div class="news2"> <img src="images/news/<? echo $id?>.jpg" /> </div> </div>] THe problem I am getting is that the image that should be on the right is going underneath. So in effect, news1 is above news2, rather than side by side. Any ideas?

Read the article
Returning a C++ reference in a const member functionasses

- by Chris Kaminski

A have a class hierarchy that looks somethign like this: class AbstractDataType { public: virtual int getInfo() = 0; }; class DataType: public AbstractDataType { public: virtual int getInfo() { }; } class Accessor { DataType data; public: const AbstractDataType& getData() const { return(data); } } Well, GCC 4.4 reports: In member function ‘const AbstractDataType& Accessor::getData() const’: error: invalid initialization of reference of type ‘const AbstractDataType&’ from expression of type ‘const DataType’ Where am I going wrong - is this a case where I MUST use a pointer?

Read the article
wxPthon problems with Wrapping StaticText

- by Scott B

Hello. I am having an issue with wxPython. A simplified version of the code is posted below (white space, comments, etc removed to reduce size - but the general format to my program is kept roughly the same). When I run the script, the static text correctly wraps as it should, but the other items in the panel do not move down (they act as if the statictext is only one line and thus not everything is visible). If I manually resize the window/frame, even just a tiny amount, everything gets corrected and displays as it is should. I took screen shots to show this behavior, but I just created this account and thus don't have the required 10 reputation points to be allowed to post pictures. Why does it not display correctly to begin with? I've tried all sorts of combination's of GetParent().Refresh() or Update() and GetTopLevelParent().Update() or Refresh(). I've tried everything I can think of but cannot get it to display correctly without manually resizing the frame/window. Once re-sized, it works exactly as I want it to. Information: Windows XP Python 2.5.2 wxPython 2.8.11.0 (msw-unicode) Any suggestions? Thanks! Code: #! /usr/bin/python import wx class StaticWrapText(wx.PyControl): def __init__(self, parent, id=wx.ID_ANY, label='', pos=wx.DefaultPosition, size=wx.DefaultSize, style=wx.NO_BORDER, validator=wx.DefaultValidator, name='StaticWrapText'): wx.PyControl.__init__(self, parent, id, pos, size, style, validator, name) self.statictext = wx.StaticText(self, wx.ID_ANY, label, style=style) self.wraplabel = label #self.wrap() def wrap(self): self.Freeze() self.statictext.SetLabel(self.wraplabel) self.statictext.Wrap(self.GetSize().width) self.Thaw() def DoGetBestSize(self): self.wrap() #print self.statictext.GetSize() self.SetSize(self.statictext.GetSize()) return self.GetSize() class TestPanel(wx.Panel): def __init__(self, *args, **kwargs): # Init the base class wx.Panel.__init__(self, *args, **kwargs) self.createControls() def createControls(self): # --- Panel2 ------------------------------------------------------------- self.Panel2 = wx.Panel(self, -1) msg1 = 'Below is a List of Files to be Processed' staticBox = wx.StaticBox(self.Panel2, label=msg1) Panel2_box1_v1 = wx.StaticBoxSizer(staticBox, wx.VERTICAL) Panel2_box2_h1 = wx.BoxSizer(wx.HORIZONTAL) Panel2_box3_v1 = wx.BoxSizer(wx.VERTICAL) self.wxL_Inputs = wx.ListBox(self.Panel2, wx.ID_ANY, style=wx.LB_EXTENDED) sz = dict(size=(120,-1)) wxB_AddFile = wx.Button(self.Panel2, label='Add File', **sz) wxB_DeleteFile = wx.Button(self.Panel2, label='Delete Selected', **sz) wxB_ClearFiles = wx.Button(self.Panel2, label='Clear All', **sz) Panel2_box3_v1.Add(wxB_AddFile, 0, wx.TOP, 0) Panel2_box3_v1.Add(wxB_DeleteFile, 0, wx.TOP, 0) Panel2_box3_v1.Add(wxB_ClearFiles, 0, wx.TOP, 0) Panel2_box2_h1.Add(self.wxL_Inputs, 1, wx.ALL|wx.EXPAND, 2) Panel2_box2_h1.Add(Panel2_box3_v1, 0, wx.ALL|wx.EXPAND, 2) msg = 'This is a long line of text used to test the autowrapping ' msg += 'static text message. ' msg += 'This is a long line of text used to test the autowrapping ' msg += 'static text message. ' msg += 'This is a long line of text used to test the autowrapping ' msg += 'static text message. ' msg += 'This is a long line of text used to test the autowrapping ' msg += 'static text message. ' staticMsg = StaticWrapText(self.Panel2, label=msg) Panel2_box1_v1.Add(staticMsg, 0, wx.ALL|wx.EXPAND, 2) Panel2_box1_v1.Add(Panel2_box2_h1, 1, wx.ALL|wx.EXPAND, 0) self.Panel2.SetSizer(Panel2_box1_v1) # --- Combine Everything ------------------------------------------------- final_vbox = wx.BoxSizer(wx.VERTICAL) final_vbox.Add(self.Panel2, 1, wx.ALL|wx.EXPAND, 2) self.SetSizerAndFit(final_vbox) class TestFrame(wx.Frame): def __init__(self, *args, **kwargs): # Init the base class wx.Frame.__init__(self, *args, **kwargs) panel = TestPanel(self) self.SetClientSize(wx.Size(500,500)) self.Center() class wxFileCleanupApp(wx.App): def __init__(self, *args, **kwargs): # Init the base class wx.App.__init__(self, *args, **kwargs) def OnInit(self): # Create the frame, center it, and show it frame = TestFrame(None, title='Test Frame') frame.Show() return True if __name__ == '__main__': app = wxFileCleanupApp() app.MainLoop() EDIT: See my post below for a solution that works!

Read the article
ASP.NET ListView, custom DataSources, and editing items

- by Andrew Shepherd

The MSDN walkthroughs provide a number of examples where you can drag a DataSource from the toolbox, run through some simple configuration steps, then drag a ListView onto the screen, point it at the DataSource, and hey - you've got full table editing. Now I'm trying to write my own DataSource class (a class that implements System.Web.UI.IDataSource) and my own DataSourceView class. I now assign an instance of this custom DataSource class to the ListView.DataSource propery. The display of all the items is working well. However, updating, inserting and deleting just is not working. I'm overriding every function I can in my DataSourceView class, and they just aren't being called. This is such a huge topic, I'll focus this question on one simple example: When you press the "Edit" button (the button inside the ItemTemplate with a CommandName of "Edit", you expect the ItemTemplate to be replaced by an EditItemTemplate. This did not happen. The only way I could get it to happen was to handle the onitemediting event. protected void _listViewPublicHolidays_ItemEditing(object sender, ListViewEditEventArgs e) { _listViewPublicHolidays.EditIndex = e.NewEditIndex; _listViewPublicHolidays.DataBind(); } This is hardly a problem, but how come I had to do it at all? In the MSDN walkthroughs where I attach a ListView to a LinqDataSource, this code doesn't have to be written. Can someone who's been here before hazard a guess as to what would be different or missing in my custom datasource?

Read the article
Can't resolve CalledFromWrongThreadException with Handler

- by michel

I will try to keep it simple: In my main activity I make a handler: public class ARViewer extends ARDisplayActivity { public final MHandler mHandler = new MHandler(this); public void onCreate(Bundle savedInstanceState) { ... The class MHandler: public final class MHandler extends Handler{ //main activity private ARViewer arnv; public MHandler(ARViewer arnv){ this.arnv = arnv; } @Override public void handleMessage(Message msg) { ... case H_RR : arnv.setContentView(R.layout.routeplanner); break; ... super.handleMessage(msg); } } But if I call the handleMessage method from a callback function in a other Class, definitely from a other thread, I still get the exception message: CalledFromWrongThreadException (Only the original thread that created a view hierarchy can touch its views) : public void rFound(Route route) { Message msg = new Message(); msg.what = MHandler.H_RR; ARViewer.arnv.mHandler.handleMessage(msg); }

Read the article
hibernate not picking sessionFactory

- by Satya

My application-context.xml is <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> <beans> <bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName"><value>com.mysql.jdbc.Driver</value></property> <property name="url"><value>jdbc:mysql://localhost:3306/myDB</value></property> <property name="username"><value>myUser</value></property> <property name="password"><value>myUser</value></property> </bean> <bean id="mySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="mappingResources"> <property name="dataSource"><ref bean="myDataSource"/></property> <list> <value>com/x/model/config/hibernate/user.hbm.xml</value> </list> </property> <property name="hibernateProperties" > <value> hibernate.dialect=org.hibernate.dialect.MySQLDialect </value> </property> </bean> <bean id="userdao" class="com.x.y.z.UserDao"> <property name="sessionFactory"><ref bean="mySessionFactory"/></property> </bean> </beans> user.hbm.xml is <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.cpt.model"> <class name="User" table="user"> <id name="userId" column="id"> <generator class="native"/> </id> <property name="firstname" column="firstName" /> <property name="lastName" column="lastName"/> <property name="login" column="login"/> <property name="pass" column="pass"/> <property name="superemail" column="superEmail"/> </class> </hibernate-mapping> and the UserDao is package com.x.y.z; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.sql.Statement; import org.hibernate.HibernateException; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.orm.hibernate.support.HibernateDaoSupport; import org.springframework.stereotype.Component; import com.x.model.User; @Component public class UserDao { private SessionFactory sessionFactory; public void addUser(User user) { Session session; try { try { session = getSessionFactory().openSession(); // session = sessionFactory.openSession(); session.save(user); } catch (RuntimeException e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (HibernateException e) { // TODO Auto-generated catch block System.out.println("printing in the catch"); e.printStackTrace(); } } public SessionFactory getSessionFactory() { System.out.println("returning session factory ::: sessionFactory == null :: "+sessionFactory.openSession()); return sessionFactory; } public void setSessionFactory(SessionFactory sessionFactory) { System.out.println("this is setting session factory" + sessionFactory.getClass()); System.out.println("setting session factory ::: sessionFactory == null :: "+sessionFactory==null); this.sessionFactory = sessionFactory; System.out.println("setting session factory ::: sessionFactory == null :: "+this.sessionFactory.openSession().getClass()); System.out.println(getSessionFactory().openSession().isOpen()); } } However, I keep getting 14:45:09,929 INFO [org.hibernate.impl.SessionFactoryImpl] building session fact ory 14:45:09,933 WARN [net.sf.ehcache.config.Configurator] No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath: vfs:/C:/jb /server/default/deploy/C.war/WEB-INF/lib/ehcache-1.1.jar/ehcache-failsafe.xml 14:45:10,007 INFO [org.hibernate.impl.SessionFactoryObjectFactory] Not binding factory to JNDI, no JNDI name configured 14:45:10,008 INFO [org.hibernate.impl.SessionFactoryImpl] Checking 0 named quer ies 14:45:10,017 INFO [STDOUT] this is setting session factoryclass $Proxy178 14:45:10,017 INFO [STDOUT] false 14:45:10,019 INFO [STDOUT] setting session factory ::: sessionFactory == null : : class org.hibernate.impl.SessionImpl 14:45:10,020 INFO [STDOUT] returning session factory ::: sessionFactory == null :: org.hibernate.impl.SessionImpl(PersistentContext[entitiesByKey={}] ActionQue ue[insertions=[] updates=[] deletions=[] collectionCreations=[] collectionRemova ls=[] collectionUpdates=[]]) It is giving sessionFactory null . Any Idea where am I failing ? Thanks

Read the article
NSTableview not loading

- by Matt S.

I have an NSTableView that is inside an NSView. The whole view is being controlled by a class that has a superclass of NSObject. I send some data over to that class from another one, however, the tableview isn't refreshing, even with [myTable reloadData] The table's delegates and all that fancy stuff is connected to that NSObject class.

Read the article
What makes this "declarator invalid"? C++

- by nieldw

I have Vertex template in vertex.h. From my graph.h: 20 template<class edgeDecor, class vertexDecor, bool dir> 21 class Vertex; which I use in my Graph template. I've used the Vertex template successfully throughout my Graph, return pointers to Vertices, etc. Now for the first time I am trying to declare and instantiate a Vertex object, and gcc is telling me that my 'declarator' is 'invalid'. How can this be? 81 template<class edgeDecor, class vertexDecor, bool dir> 82 Graph<edgeDecor,int,dir> Graph<edgeDecor,vertexDecor,dir>::Dijkstra(vertex s, bool print = false) const 83 { 84 /* Construct new Graph with apropriate decorators */ 85 Graph<edgeDecor,int,dir> span = new Graph<edgeDecor,int,dir>(); 86 span.E.reserve(this->E.size()); 87 88 typename Vertex<edgeDecor,int,dir> v = new Vertex(INT_MAX); 89 span.V = new vector<Vertex<edgeDecor,int,dir> >(this->V.size,v); 90 }; And gcc is saying: graph.h: In member function ‘Graph<edgeDecor, int, dir> Graph<edgeDecor, vertexDecor, dir>::Dijkstra(Vertex<edgeDecor, vertexDecor, dir>, bool) const’: graph.h:88: error: invalid declarator before ‘v’ graph.h:89: error: ‘v’ was not declared in this scope I know this is probably another noob question, but I'll appreciate any help.

Read the article
How to use a CTabCtrl in a MFC dialog based application ?

- by shan23

I need to do something which i expected to be was simple - create a tab control which has 2 tabs, implying 2 modes of operation for my app. When user clicks on Tab1, he'll be presented with some buttons and textboxes, and when he clicks Tab2, some other input method. I noticed that there was a CTabCtrl class thats used in MFC to add tabs. However, once I added the tab ctrl using the UI designer, I couldn't specify how many tabs there'll be using property window. Searching on the net, I found some examples but all of them required you to derive from CtabCtrl , create 2 or more child dialogs etc and to write your own custom class. My question is, since I want to do something so basic, why couldn't I do it using the familiar Add Event handler/Add member variable wizard and then handle everything else inside my app's class ? Surely, the default CTabCtrl class can do something useful without needing to derive from it ?

Read the article
Android WebViewClient problem

- by deSelby

I've defined a private class that extends WebViewClient and set my WebView's client to an instance of that class (webView01.setWebViewClient(new Callback());). The class definition is as follows: private class Callback extends WebViewClient { public void onLoadResource (WebView view, String url) { } public void onPageStarted (WebView view, String url, Bitmap favicon) { } public void onPageFinished (WebView view, String url) { Animation anim = AnimationUtils.loadAnimation(MyNews.this, R.anim.webviewanim); view.startAnimation(anim); } public void onReceivedError (WebView view, int errorCode, String description, String failingUrl) { } public boolean shouldOverrideUrlLoading (WebView view, String url) { Log.e("loading url", url); return false; } } My problem is that onPageFinished is definitely getting called, but shouldOverrideUrlLoading is never being called. What am I doing wrong here?

Read the article
span height width unable to change

- by poineer

trying to make one horizontal box.. inside that update limits. if u see the below sample code, u can understand how i set limits. those limit classes height, i am unable to decrease. could please tel me what is reason.. i want to make it using div and span only <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en" dir="ltr"> <head> <style> .limitBlock { border-left: 1px solid black; } .limitRBlack { border-right: 1px solid black; } .horbox { background-color:#FFFFFF; height:4px; width:400px; margin-left:5px; border: 1px solid #AAAAAA; } </style> </head> <body> <div class="horbox"> <div style="margin-top:-3px"> <span style="margin-top: -4px;height: 9px;"> <span id="limit1" class="limitBlock" style="margin-left:-1px;"></span> <span id="limit2" class="limitBlock" style="margin-left:100px;"></span> <span id="limit3" class="limitBlock" style="margin-left:100px;"></span> <span id="limit4" class="limitBlock" style="margin-left:100px;"></span> </span> <span id="limit5"class="limitRBlack" style="margin-left:96px;"></span> </div> </div> </body> </html>

Read the article
C++ interpreter conceptual problem

- by Jan Wilkins

I've built an interpreter in C++ for a language created by me. One main problem in the design was that I had two different types in the language: number and string. So I have to pass around a struct like: class myInterpreterValue { myInterpreterType type; int intValue; string strValue; } Objects of this class are passed around million times a second during e.g.: a countdown loop in my language. Profiling pointed out: 85% of the performance is eaten by the allocation function of the string template. This is pretty clear to me: My interpreter has bad design and doesn't use pointers enough. Yet, I don't have an option: I can't use pointers in most cases as I just have to make copies. How to do something against this? Is a class like this a better idea? vector<string> strTable; vector<int> intTable; class myInterpreterValue { myInterpreterType type; int locationInTable; } So the class only knows what type it represents and the position in the table This however again has disadvantages: I'd have to add temporary values to the string/int vector table and then remove them again, this would eat a lot of performance again. Help, how do interpreters of languages like Python or Ruby do that? They somehow need a struct that represents a value in the language like something that can either be int or string.

Read the article
gcc problem with explicit template instantiation?

- by steve jaffe

It is my understanding that either a declaration or typedef of a specialization ought to cause a template class to be instantiated, but this does not appear to be happening with gcc. E.g. I have a template class, template class Foo {}; I write class Foo<double>; or typedef Foo<double> DoubleFoo; but after compilation the symbol table of the resulting object file does not contain the members of Foo. If I create an instance: Foo<double> aFoo; then of course the symbols are all generated. Has anyone else experienced this and/or have an explanation?

Read the article
Django forms: how to dynamically create ModelChoiceField labels

- by Henri

I would like to create dynamic labels for a forms.ModelChoiceField and I'm wondering how to do that. I have the following form class: class ProfileForm(forms.ModelForm): def __init__(self, data=None, ..., language_code='en', family_name_label='Family name', horoscope_label='Horoscope type', *args, **kwargs): super(ProfileForm, self).__init__(data, *args, **kwargs) self.fields['family_name'].label = family_name_label . . self.fields['horoscope'].label = horoscope_label self.fields['horoscope'].queryset = Horoscope.objects.all() class Meta: model = Profile family_name = forms.CharField(widget=forms.TextInput(attrs={'size':'80', 'class': 'contact_form'})) . . horoscope = forms.ModelChoiceField(queryset = Horoscope.objects.none(), widget=forms.RadioSelect(), empty_label=None) The default labels are defined by the unicode function specified in the Profile definition. However the labels for the radio buttons created by the ModelChoiceField need to be created dynamically. First I thought I could simply override ModelChoiceField as described in the Django documentation. But that creates static labels. It allows you to define any label but once the choice is made, that choice is fixed. So I think I need to adapt add something to init like: class ProfileForm(forms.ModelForm): def __init__(self, data=None, ..., language_code='en', family_name_label='Family name', horoscope_label='Horoscope type', *args, **kwargs): super(ProfileForm, self).__init__(data, *args, **kwargs) self.fields['family_name'].label = family_name_label . . self.fields['horoscope'].label = horoscope_label self.fields['horoscope'].queryset = Horoscope.objects.all() self.fields['horoscope'].<WHAT>??? = ??? Anyone having any idea how to handle this? Any help would be appreciated very much.

Read the article
NHibernate collections: many-to-many relationships

- by Brad Heller

I've got two models, a Product model and a ShoppingCart model. The ShoppingCart model has a collection of products as a property called Products (List). Here is the mapping for my ShoppingCart model. <class name="MyProject.ShoppingCart, MyProject" table="ShoppingCarts"> <id name="Id" column="Id"> <generator class="native" /> </id> <many-to-one name="Company" class="MyProject.Company, MyProject" column="CompanyId" /> <property name="ExternalId" column="GUID" generated="insert" /> <property name="Name" column="Name" /> <property name="Total" column="Total" /> <property name="CreationDate" column="CreationDate" generated="insert" /> <property name="UpdatedDate" column="UpdatedDate" generated="always" /> <bag name="Products" table="ShoppingCartContents" lazy="false"> <key column="ShoppingCartId" /> <many-to-many column="ProductId" class="MyProjectMyProject.Product, MyProject" fetch="join" /> </bag> </class> When I try to save to the DB, the ShoppingCart is saved, but the mapping rows in ShoppingCartContents aren't save, making me thing that there's an issue with the mapping. Where am I going wrong here?

Read the article
HTML: How to get a child element to show behidn (lower z-index) than its parent

- by dclowd9901

I need for a certain dynamic element to always appear on top of another element, no matter what order in the DOM tree they are. Is this possible? I've tried z-index (with position: relative), and it doesn't seem to work. I hate to be vague, but this is the simplest way I can think of asking this question without explaining its purpose ad nauseum. So, to recap, I need <div class="a"> <div class="b"></div> </div> <div class="b"> <div class="a"></div> </div> To display exactly the same when rendered. And for flexibility purposes (I'm planning on distributing a plugin that needs this functionality), I'd really like to not have to resort to absolute or fixed positioning.

Read the article
Ninject giving NullReferenceException

- by Iceman

I'm using asp.net MVC 2 and Ninject 2. The setup is very simple. Controller calls service that calls repository. In my controller I use inject to instantiate the service classes with no problem. But the service classes don't instantiate the repositories, giving me NullReferenceException. public class BaseController : Controller { [Inject] public IRoundService roundService { get; set; } } This works. But then this does not... public class BaseService { [Inject] public IRoundRepository roundRepository { get; set; } } Giving a NullReferenceException, when I try to use the roundRepository in my RoundService class. IList<Round> rounds = roundRepository.GetRounds( ); Module classes... public class ServiceModule : NinjectModule { public override void Load( ) { Bind( ).To( ).InRequestScope( ); } } public class RepositoryModule : NinjectModule { public override void Load( ) { Bind<IRoundRepository>( ).To<RoundRepository>( ).InRequestScope( ); } } In global.axax.cs protected override IKernel CreateKernel( ) { return new StandardKernel( new ServiceModule( ), new RepositoryModule( ) ); }

Read the article
Is it necessary to remove the metaClass after use mockDomain in Grails unit tests?

- by Arturo Herrero

mockDomain provide a dynamic methods like save(), validate(), ... for a domain class. Is it necessary to remove the meta classes for each class I mock using mockDomain? class UserTests extends GrailsUnitTestCase { protected void setUp() { super.setUp() mockDomain User mockDomain Address } protected void tearDown() { super.tearDown() def remove = GroovySystem.metaClassRegistry.&removeMetaClass remove User remove Address } }

Read the article

< Previous Page | 409 410 411 412 413 414 415 416 417 418 419 420 | Next Page >