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  • Joda-Time: Period to string

    - by tt
    I'm using the Joda-Time library with Java. I'm having some difficulty trying to turn a Period object to a string in the format of "x days, x hours, x minutes". These Period objects are first created by adding an amount of seconds to them (they are serialized to XML as seconds and then recreated from them). If I simply use the getHours() etc. methods in them, all I get is zero and the total amount of seconds with getSeconds. How can I make Joda calculate the seconds into the respective fields, like days, hours, etc...?

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  • MVC pattern and State Machine

    - by topright
    I think of a game as a state machine. Game States separate I/O processing, game logic and rendering into different classes: while (game_loop) { game->state->io_events(this); game->state->logic(this); game->state->rendering(); } You can easily change a game state in this approach. MVC separation works in more complex way: while (game_loop) { game->cotroller->io_events(this); game->model->logic(this); game->view->rendering(); } So changing Game States becomes error prone task (switch 3 MVC objects, not 1). What are practical ways of combining these 2 concepts?

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  • Reasons why one should not call the garbage collector directly.

    - by Shimrod
    Hi everyone, I'm currently writing a paper for my company, about how to avoid calling the garbage collector directly from the code (when playing with COM objects for instance). I know this is a bad practice, and should be only considered in very rare cases, but I can't seem to find a way to tell why it should be avoided. And I don't want to rely on the "The G.C. is smarter than you" principle (even if it is the truth :-) ) So can you tell me some clues about why you think one should avoid to call the garbage collector directly ? (performance impact?) Or maybe if you have links about this particular topic, they would be very helpful. Thanks in advance !

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  • Persistence with Vaadin

    - by palto
    Hi I'm trying to learn vaadin. I'm really confused how to do any kind of application development with persistence because if I have a reference to my service layer objects, they get stored in session and I really don't want that. Persistence stuff just isn't serializable. My case is that I have an already made application that uses Spring and I'm creating a new UI for it with Vaadin. I can inject the spring stuff to my Vaadin application but that gets stored in the session. Any tips? By the way how do you post in the Vaadin forums? I can't find a post button or way to register :)

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  • What is the recommended toolchain for formatting XML DocBook?

    - by Jonathan Leffler
    I've seen Best tools for working with DocBook XML documents, but my question is slightly different. Which is the currently recommended formatting toolchain - as opposed to editing tool - for XML DocBook? In Eric Raymond's 'The Art of Unix Programming' from 2003 (an excellent book!), the suggestion is XML-FO (XML Formatting Objects), but I've since seen suggestions here that indicated that XML-FO is no longer under development (though I can no longer find that question on StackOverflow, so maybe it was erroneous). Assume I'm primarily interested in Unix/Linux (including MacOS X), but I wouldn't automatically ignore Windows-only solutions. Is Apache's FOP the best way to go? Are there any alternatives?

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  • django manual login and redirect

    - by Zayatzz
    Hello I have such view that handles user registration. After creating new user i want to manually authenticate it and log it in.: def register(request): ... ... if form.is_valid(): username = form.cleaned_data['username'] password = form.cleaned_data['password1'] email = '' newuser = User.objects.create_user(username, email, password) user = authenticate(username=username, password=password) login (request, user) I have set LOGIN_REDIRECT_URL to '/profile/', but after authenticating and logging user in, it redirects me back to the same view not to /profile/, why? And how can i specify where to redirect after logging in? If i add HttpResponseRedirect('/profile/') After login line - nothing happens. The script never ends up there. Alan.

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  • Memory Profiling: How to detect which application/package is consuming too much memory

    - by malvim
    Hi, I have a situation here at work where we run a JEE server with several applications deployed on it. Lately, we've been having frequent OutOfMemoryException's. We suspect some of the apps might be behaving badly, maybe leaking, or something. The problem is, we can't really tell which one. We have run some memory profilers (like YourKit), and they're pretty good at telling what classes use the most memory. But they don't show relationships between classes, so that leaves us with a situation like this: We see that there are, say, lots of Strings and int arrays and HashMap entries, but we can't really tell which application or package they come from. Is there a way of knowing where these objects come from, so we can try to pinpoint the packages (or apps) that are allocating the most memory? Thank you in advance.

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  • How to run script from command-line

    - by Eric
    I want to write a script that counts the types of objects there are in the ZODB, when they were created, how many users have joined since a given point in time,etc. I am wondering how to accomplish this. So, was wondering if there is a way to pass a script to bin/instance to be executed. I've created this script with a py script but it takes a VERY long time to finish and this is why I would like to do this from the command-line... in the hopes of it running faster. Thanks ERic

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  • Resources for Programmatic Rendering of Topology Maps

    - by bn
    Servus, Do you know of any frameworks, APIS, languages, or other resources that are well suited for drawing topology maps that allow a user to interact with objects on the map? I am not constrained by language choice and the program can be web-based, or stand-alone. I thought I would check before rolling my own. My goal is not to draw cartographic maps, but more like this picture: http://www.fineconnection.com/files/images/GraphicalNM.PNG, or if you are familiar with Edward Tufte's books, the data-visualization mechanisms he describes such as a map of a metro or subway. Also, if you have had any experience rendering these types of user interfaces or usage of underlying datastructures, I would be grateful to hear any thoughts you have on the subject, advice, any "gotchas." Thank you very for your time, -bn

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  • .Net Array or IList<T> from NumPy array in IronPython?

    - by Barry Wark
    Imagine I have a .Net application that supports user extensions in the form of Python modules by embedding IronPython. Using Ironclad, I can allow users to make use of the NumPy and SciPy packages from within their modules. How good is the interop provided by Ironclad? My question is: can I use a NumPy array of type T provided by the user's module in the rest of my app that requires an IList<T>? Edit To clarify, IronPython exposes any Python enumerable of objects of type T as an IEnumerable<T> or an IList<T>. I'm not sure if NumPy arrays fit in this category. I would rather not have to call .tolist() on the NumPy array as the arrays may be quite large.

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  • Django Haystack exact filtering

    - by blackrobot
    I have a haystack search which has the following SearchIndex: class GrantIndex(indexes.SearchIndex): """ This provides the search index for the Grant application. """ text = indexes.CharField(document=True, use_template=True) year = indexes.IntegerField(model_attr='year__year') date = indexes.DateField(model_attr='date') program = indexes.CharField(model_attr='program__area') grantee = indexes.CharField(model_attr='grantee') amount = indexes.IntegerField(model_attr='amount') site.register(Grant, GrantIndex) If I want to search filtering out any programs that ARE NOT 'Health', I run the following query: from haystack.query import SearchQuerySet sqs = SearchQuerySet() sqs = sqs.filter(program='Health') Unfortunately, this also produces objects from the program 'Health\Other' and 'Health\Cardiovascular'. How do I stop the search from allowing those other programs in? I run Ubuntu 9.10 with Xapian as my search back-end.

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  • Cleanup for control inside a FlowDocument

    - by Thorarin
    I have a custom control that I use inside a FlowDocument. The control uses a System.Drawing.ImageAnimator to display transparent, animated GIF images. Why is this such a pain in the butt in WPF anyway? :P In my original implementation, this was causing memory leaks when a paragraph containing the control was being deleted from the document, because the ImageAnimator kept a reference to the control for event handling. I've now implemented a WeakEventManager pattern which seems to indeed fix the leak itself, but I would like to stop "OnFrameChanged" events from being fired if a particular animated GIF is not currently in the document, instead of relying on the garbage collector to eventually collect the control objects and my event manager to notice that there no longer are valid listeners to the event. Basically, I would like to take a more active role in this and have the control react to being removed from the FlowDocument. Is there some way to do this? I've been unable to find it. OnVisualParentChanged doesn't get fired, because the direct parent (a Paragraph) is unchanged.

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  • Java Preprocessor in C#

    - by Olaseni
    Say I want to create a sort of Pre-processor for existing java code, so I can get the language specific keywords and objects, and then create routines that convert them to their Csharp equivalents, using Csharp code - what route should this take? I'm thinking of Regular Expressions, but I'm fuzzed. I have a bunch of about a 100 .java files and I need to convert them to csharp code in record time. I have manually done just about five of them and I have serious headaches already. Or are there any tools out there that already do that?

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  • XIB-instantiated Object's IBOutlet is nil

    - by jxpx777
    I have a XIB set up like in this screenshot: File's owner is my main window controller. The XIB is also in charge of creating an object that serves as the delegate for the MGScopeBar view. As you can see in the screenshot, the scope bar delegate has an IBOutlet for the search field so that it can return it as an extra view as part of the delegate process. The problem I'm having is that when the delegate object is queried for the accessory view, the IBOutlet NSSearchField is nil. I'm fairly certain this has something to do with the order that objects are created, IBOutlets wired, etc, but I'm just a little lost as to where in the process I can expect the search field to exist so that the scope bar delegate can reference it properly. Thanks in advance for any pointers.

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  • Oracle: set timezone for column

    - by dbf
    Hi, I need to do migration date-timestamp with timezone similar to described here: http://stackoverflow.com/questions/1664627/migrating-oracle-date-columns-to-timestamp-with-timezone. But I need to make additional convertion (needed to work correctly with legacy apps): for all dates we need to change timezone to UTC and set time to 12:00 PM. So now dates are stored in local database (New York) timezone. I need to convert them this way 25/12/2009 09:12 AM (local timezone) in date column = 25/12/2009 12:00 PM UTC timestamp with local timezone column. Could you advice, how to set timezone for date value in Oracle (I found only suggestions how to convert from one timezone to another) (for example in Java there is setTimeZone method for Calendar objects). We want to make a convertion this way: rename old date column to NAME_BAK create new column timestamp with local timezone iterate over old column for not-null values set timezone to UTC, time to 12:00 PM drop old column after testing of this migration

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  • WSDL: What do I do with it? Add service Reference? Noobie question

    - by Johnny
    Hey guys! I have been given a WSDL with all the method requests and responses, and all the objects I'll need to use for creating a few webmethods. The thing is, I don't know what to do with it. I've added the WSDL as a Service Reference. I can see the methods and structures, I can instantiate them, it's all there, but the project doesn't build as soon as I add the WSDL. "Error 2 The type name 'ServiceReference1' does not exist in the type 'WSPELab.WSPELab' C:\Users\JJ\Documents\Visual Studio 2008\Projects\WSPELab\WSPELab\Service References\ServiceReference1\Reference.cs 21 111 WSPELabSLN Is it a stupid namespace error on my part? EDIT : Forgot to add this. With the WSDL added, can I used the structures it contains directly? Or are they just "listings" for me to implement? Thanks!

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  • AS3 Event Bubbling outside of the Scenegraph/DisplayList

    - by Brian Heylin
    Hi just wondering if it is possible to take advantage of event bubbling in non display list classes in AS3. For example in the model of an application where there is a City class that contains many Cars. What methods are there to attach an event listener to a City object and receive events that bubble up from the child Cars. To clarify The City and Car objects are not part of the display list, they are not DisplayObjects. So can bubbling be implemented outside of the display list somehow? As far as I know, this is not possible without manually attaching event listeners to each Car object and re dispatching the event from the City object. Anyone else have a cleaner solution?

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  • Scoping inside Javascript anonymous functions

    - by DCD
    I am trying to make a function return data from an ajax call that I can then use. The issue is the function itself is called by many objects, e.g.: function ajax_submit (obj) { var id = $(obj).attr('id'); var message = escape ($("#"+id+" .s_post").val ()); var submit_string = "action=post_message&message="+message; $.ajax({ type: "POST", url: document.location, data: submit_string, success: function(html, obj) { alert (html); } }); return false; } Which means that inside the anonymous 'success' function I have no way of knowing what the calling obj (or id) actually are. The only way I can think of doing it is to attach id to document but that just seems a bit too crude. Is there another way of doing this?

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  • Archiving an Entire Rails Site

    - by Pygmalion
    I have a Ruby on Rails site that was only needed for a short period of time during which users added various objects to a mySQL database, commenting on them, associating themselves with them, etc. etc. etc. The question is this: the site is no longer needed until a week next year around this time when I will clear the database and use it again (starting from scratch). What's the best way to archive the current site so that the existing content is still viewable but no new content can be added? By best way, I mean the method by which the least system resources will be used, the server will be the safest, etc. Any suggestions?

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  • map xml element to xsd complexType based on attribute

    - by Joshua Johnson
    Assume there exists an XML instance document that looks like this: <root> <object type="foo"> <!-- ... --> </object> <object type="bar"> <!-- ... --> </object> </root> My goal is to have a small (static) schema that verifies proper <element type="xxx" /> syntax for objects, and another schema (more prone to change) that verifies the contents of each object element against a complexType that matches the type attribute: <complexType name="foo"><!--should match object with type="foo"--></complexType> <complexType name="bar"><!--should match object with type="bar"--></complexType> What is the best way to accomplish this (or something similar)?

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  • Annotate and Aggregate function in django

    - by thesteve
    In django I have the following tables and am trying to count the number of votes by item. class Votes(models.Model): user = models.ForeignKey(User) item = models.ForeignKey(Item) class Item(models.Model): name = models.CharField() description = models.TextField() I have the following queryset queryset = Votes.objects.values('item__name').annotate(Count('item')) that returns a list with item name and view count but not the item object. How can I set it up so that the object is returned instead of just the string value? I have been messing around with Manager and Queryset methods, that the right track? Any advice would be appreciated.

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  • "Primary Filegroup is Full" in SQL Server 2008 Standard for no apparent reason

    - by Anton Gogolev
    Our database is currently at 64 Gb and one of our apps started to fail with the following error: System.Data.SqlClient.SqlException: Could not allocate space for object 'cnv.LoggedUnpreparedSpos'.'PK_LoggedUnpreparedSpos' in database 'travelgateway' because the 'PRIMARY' filegroup is full. Create disk space by deleting unneeded files, dropping objects in the filegroup, adding additional files to the filegroup, or setting autogrowth on for existing files in the filegroup. I double-checked everything: all files in a single filegroup are allowed to autogrow with a reasonable increments (100 Mb for a data file, 10% for a log file), more than 100 Gb of free space is available for the database, tempdb is set to autogrow as well with plenty of free HDD space on its drive. To resolve a problem, I added second file to the filegroup and the error has gone. But I feel uneasy about this whole situation. Where' the problem here, guys?

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  • Creating a Web Wrapper for COM and OCX

    - by balexandre
    Hi guys, Today we have a windows application that, using an OCX, creates a web page (visible by a WebBrowser control in a small .NET WinForm application) and communicates through COM to the main application/client. (not relevant but this is Pascal) I'm currently responsible to re create this application in a web environment so we can have the same functionality shared through Web as the user can see the same in a Web Browser. The Windows application has almost 4 years on it and I need to re create everything from scratch, and all the bugs/features find in the future in the Windows Application I have to re create them again in the Web... Ohh well, you can see where this will end. I was thinking... is there any way I can create a Wrapper, even using 3rd party commercial objects, to: Communicate with the COM Object Can expose the content of the OCX (this in my most confortable language, ASP.NET C#, but other are welcome) I was thinking out loud, can this be accomplish with a Java Applet? Any ideas or any point to the right road will be appreciated.

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  • Dynamically creating controls in MFC (Collection question)

    - by ProgramWriter
    Hello all, I have some custom control inside of which i should create radiobuttons or checkboxes. The count of child controls is available only at runtime (it loads some file from which it gets this count). So i need to create variable number of controls. Which collection i should use for this purpose? Solution 1: simply use std::vector (or CArray) - not suitable because i want use MFC (CButton). Of course i can Attach() and later Detach() handle to window each time i need this window, but it will give big overhead. Solution 2: use std::vector or CArray or CList or... In this case i take care about making 'new' and appropriate 'delete' when control is unneeded. I am forgetful :) MFC handle map contains pointer to CButton and i can't use simple CArray, because it will move my objects each time when his size will grow. ... and the question is: Which collection i should use for containing variable count of MFC control classes?

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  • asp.net grid view hyper link pass values to new window

    - by srihari
    hai guys here is my question please help me I have a gridview with hyperlink fields here my requirement is if I click on hyperlink of particular row I need to display that particular row values into other page in that page user will edit record values after that if he clicks on update button I need to update that record values and get back to previous home page. if iam clicking hyper link in first window new window should open with out any url tool bar and minimize close buttons like popup modular Ajax ModalPopUpExtender but iam un able to ge that that one please help me the fillowing code is defalut.aspx <head runat="server"> <title>PassGridviewRow values </title> <style type="text/css"> #gvrecords tr.rowHover:hover { background-color:Yellow; font-family:Arial; } </style> </head> <body> <form id="form1" runat="server"> <div> <asp:GridView runat="server" ID="gvrecords" AutoGenerateColumns="false" HeaderStyle-BackColor="#7779AF" HeaderStyle-ForeColor="White" DataKeyNames="UserId" RowStyle-CssClass="rowHover"> <Columns> <asp:TemplateField HeaderText="Change Password" > <ItemTemplate> <a href ='<%#"UpdateGridviewvalues.aspx?UserId="+DataBinder.Eval(Container.DataItem,"UserId") %>'> <%#Eval("UserName") %> </a> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="FirstName" HeaderText="FirstName" /> <asp:BoundField DataField="LastName" HeaderText="LastName" /> <asp:BoundField DataField="Email" HeaderText="Email" /> </Columns> </asp:GridView> </div> </form> </body> </html> following code default.aspx.cs code using System; using System.Collections.Generic; using System.Data; using System.Data.SqlClient; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { BindGridview(); } } protected void BindGridview() { SqlConnection con = new SqlConnection("Data Source=.;Integrated Security=SSPI;Initial Catalog=testdb1"); con.Open(); SqlCommand cmd = new SqlCommand("select * from UserDetails", con); SqlDataAdapter da = new SqlDataAdapter(cmd); cmd.ExecuteNonQuery(); con.Close(); DataSet ds = new DataSet(); da.Fill(ds); gvrecords.DataSource = ds; gvrecords.DataBind(); } } this is updategridviewvalues.aspx <head runat="server"> <title>Update Gridview Row Values</title> <script type="text/javascript"> function Showalert(username) { alert(username + ' details updated successfully.'); if (alert) { window.location = 'Default.aspx'; } } </script> </head> <body> <form id="form1" runat="server"> <div> <table> <tr> <td colspan="2" align="center"> <b> Edit User Details</b> </td> </tr> <tr> <td> User Name: </td> <td> <asp:Label ID="lblUsername" runat="server"/> </td> </tr> <tr> <td> First Name: </td> <td> <asp:TextBox ID="txtfname" runat="server"></asp:TextBox> </td> </tr> <tr> <td> Last Name: </td> <td> <asp:TextBox ID="txtlname" runat="server"></asp:TextBox> </td> </tr> <tr> <td> Email: </td> <td> <asp:TextBox ID="txtemail" runat="server"></asp:TextBox> </td> </tr> <tr> <td> </td> <td> <asp:Button ID="btnUpdate" runat="server" Text="Update" onclick="btnUpdate_Click" /> <asp:Button ID="btnCancel" runat="server" Text="Cancel" onclick="btnCancel_Click"/> </td> </tr> </table> </div> </form> </body> </html> and my updategridviewvalues.aspx.cs code is follows using System; using System.Collections.Generic; using System.Data; using System.Data.SqlClient; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class UpdateGridviewvalues : System.Web.UI.Page { SqlConnection con = new SqlConnection("Data Source=.;Integrated Security=SSPI;Initial Catalog=testdb1"); private int userid=0; protected void Page_Load(object sender, EventArgs e) { userid = Convert.ToInt32(Request.QueryString["UserId"].ToString()); if(!IsPostBack) { BindControlvalues(); } } private void BindControlvalues() { con.Open(); SqlCommand cmd = new SqlCommand("select * from UserDetails where UserId=" + userid, con); SqlDataAdapter da = new SqlDataAdapter(cmd); cmd.ExecuteNonQuery(); con.Close(); DataSet ds = new DataSet(); da.Fill(ds); lblUsername.Text = ds.Tables[0].Rows[0][1].ToString(); txtfname.Text = ds.Tables[0].Rows[0][2].ToString(); txtlname.Text = ds.Tables[0].Rows[0][3].ToString(); txtemail.Text = ds.Tables[0].Rows[0][4].ToString(); } protected void btnUpdate_Click(object sender, EventArgs e) { con.Open(); SqlCommand cmd = new SqlCommand("update UserDetails set FirstName='" + txtfname.Text + "',LastName='" + txtlname.Text + "',Email='" + txtemail.Text + "' where UserId=" + userid, con); SqlDataAdapter da = new SqlDataAdapter(cmd); int result= cmd.ExecuteNonQuery(); con.Close(); if(result==1) { ScriptManager.RegisterStartupScript(this, this.GetType(), "ShowSuccess", "javascript:Showalert('"+lblUsername.Text+"')", true); } } protected void btnCancel_Click(object sender, EventArgs e) { Response.Redirect("~/Default.aspx"); } } My requirement is new window should come like pop window as new window with out having url and close button my database tables is ColumnName DataType ------------------------------------------- UserId Int(set identity property=true) UserName varchar(50) FirstName varchar(50) LastName varchar(50) Email Varchar(50)

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