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  • SSIS - Wizard vs manual vs programming

    - by alchemical
    I'd like to move 26 tables from one DB to another. I see I can do this in the SSIS Import and Export Wizard. I believe the other approach would be to select tools from the toolbar in Data Flow and then configure them all. When is it better to use the wizard and when is it best to create the package manually (with the visual tools) or programmatically? One thing I noticed with the Wizard is that it lets me select multiple tables at once, but I could not find a way to get back to that screen once the package is created, so that I could edit the various tables all in one place.

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  • Custom array sorting based on instance properties

    - by St. John Johnson
    I'm trying to perform a usort on an array inside an instance of a class. But the sort is dependent on the properties of said instance. Code (which doesn't work): class foo { private $array; private $key; private $dir; function sort() { usort($this->array, array("foo", "orderArray")); } function orderArray($a, $b) { return strcmp($a[$this->key], $b[$this->key]) * $this->dir; } } From the orderArray class, you can't access $key or $dir. The question is, how can I write this so I can?

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  • Linux Kernel programming: trying to get vm_area_struct->vm_start crashes kernel

    - by confusedKid
    Hi, this is for an assignment at school, where I need to determine the size of the processes on the system using a system call. My code is as follows: ... struct task_struct *p; struct vm_area_struct *v; struct mm_struct *m; read_lock(&tasklist_lock); for_each_process(p) { printk("%ld\n", p->pid); m = p->mm; v = m->mmap; long start = v->vm_start; printk("vm_start is %ld\n", start); } read_unlock(&tasklist_lock); ... When I run a user level program that calls this system call, the output that I get is: 1 vm_start is 134512640 2 EIP: 0073:[<0806e352] CPU: 0 Not tainted ESP: 007b:0f7ecf04 EFLAGS: 00010246 Not tainted EAX: 00000000 EBX: 0fc587c0 ECX: 081fbb58 EDX: 00000000 ESI: bf88efe0 EDI: 0f482284 EBP: 0f7ecf10 DS: 007b ES: 007b 081f9bc0: [<08069ae8] show_regs+0xb4/0xb9 081f9bec: [<080587ac] segv+0x225/0x23d 081f9c8c: [<08058582] segv_handler+0x4f/0x54 081f9cac: [<08067453] sig_handler_common_skas+0xb7/0xd4 081f9cd4: [<08064748] sig_handler+0x34/0x44 081f9cec: [<080648b5] handle_signal+0x4c/0x7a 081f9d0c: [<08066227] hard_handler+0xf/0x14 081f9d1c: [<00776420] 0x776420 Kernel panic - not syncing: Kernel mode fault at addr 0x0, ip 0x806e352 EIP: 0073:[<400ea0f2] CPU: 0 Not tainted ESP: 007b:bf88ef9c EFLAGS: 00000246 Not tainted EAX: ffffffda EBX: 00000000 ECX: bf88efc8 EDX: 080483c8 ESI: 00000000 EDI: bf88efe0 EBP: bf88f038 DS: 007b ES: 007b 081f9b28: [<08069ae8] show_regs+0xb4/0xb9 081f9b54: [<08058a1a] panic_exit+0x25/0x3f 081f9b68: [<08084f54] notifier_call_chain+0x21/0x46 081f9b88: [<08084fef] __atomic_notifier_call_chain+0x17/0x19 081f9ba4: [<08085006] atomic_notifier_call_chain+0x15/0x17 081f9bc0: [<0807039a] panic+0x52/0xd8 081f9be0: [<080587ba] segv+0x233/0x23d 081f9c8c: [<08058582] segv_handler+0x4f/0x54 081f9cac: [<08067453] sig_handler_common_skas+0xb7/0xd4 081f9cd4: [<08064748] sig_handler+0x34/0x44 081f9cec: [<080648b5] handle_signal+0x4c/0x7a 081f9d0c: [<08066227] hard_handler+0xf/0x14 081f9d1c: [<00776420] 0x776420 The first process (pid = 1) gave me the vm_start without any problems, but when I try to access the second process, the kernel crashes. Can anyone tell me what's wrong, and maybe how to fix it as well? Thanks a lot! (sorry for the bad formatting....) edit: This is done in a Fedora 2.6 core in an uml environment.

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  • Crystal Report, Group based Summary at report footer

    - by yesosuresh
    HI, Is it possible to display summary of a group at the report footer ? Let me explain the scenario. I've to create the following kind of report: Client Amount Currency Customer 123: WWWW 300 SGD XXXX 400 SGD YYYY 200 USD ZZZZ 300 USD Customer 456: W1W1 300 SGD X1X1 400 SGD Y1Y1 200 USD Z1Z1 300 USD . . . . . At the report footer, I need to show the following: Grand total: USD 1000 Grand total: SGD 1400 Need to display grand total of amount by Currency at Report footer.Is it possible to do in Crystal report? I'm using crystal report version 11. Could anyone suggest me a solution ?

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  • WPF -- Event Threading, GUI updating question

    - by LSTayon
    I'm trying to send two events to the main window so that I can show some kind of animation that will let the user know that I'm updating the data. This is an ObservableCollection object so the OnPropertyChanged is immediately picked up by the bindings on the main window. The sleep is only in there so that the user can see the animation. However, the first OnPropetyChanged is never seen. I'm assuming this is because we're in a single thread here and the timer_Tick has to finish before the GUI updates. Any suggetions? In VB6 land we would use a DoEvents or a Form.Refresh. Thanks! private void timer_Tick(object sender, EventArgs e) { Loading = "Before: " + DateTime.Now.ToString(); OnPropertyChanged("Loading"); LoadData(); Thread.Sleep(1000); //Loading = Visibility.Hidden; Loading = "After: " + DateTime.Now.ToString(); OnPropertyChanged("Loading"); }

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  • Input event loop in a console application

    - by Álvaro
    Hi, I'm trying to make a little console application that is able to deal with keystrokes as events. What I need is mostly the ability to get the keystrokes and be able to do something with them without dealing with the typical stdin reading functions. I tried to check the code of programs like mplayer, which implement this (for stopping the play, for example), but I can't get to the core of this with such a big code base. Thanks

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  • Control third check box based on the state of the first two using jquery

    - by Moj
    I have three check boxes and need to disable the third if either and/or of the other two are checked. I'm sure there's a easier way than what I have currently. It's turning into what I believe is a mess and I'm hoping that someone with more jquery knowledge can shine the light here. Here's my simple html form: <html> <head> <script type="text/javascript" src="jquery.js"></script> <script src="custom.js" type="text/javascript"></script> </head> <body> <input type="checkbox" class="class" id="1">First <input type="checkbox" class="class" id="2">Second <input type="checkbox" class="class" id="3">Third </body> </html> Here's the javascript I'm using with jquery v1.4.2 jQuery(document).ready(function() { // watches the events of all checkboxes $(":checkbox").click(function(){ if( // if both 1 and 2 are checked we don't want to enable Third until both are unchecked. (($('#1:checkbox').attr('checked'))&&($('#2:checkbox').attr('checked')))|| ((($('#1:checkbox').attr('checked'))&&($('#2:checkbox').attr('checked')))&&($('#3:checkbox').attr('disabled')))|| ((($('#1:checkbox').attr('checked'))||($('#2:checkbox').attr('checked')))&&($('#3:checkbox').attr('disabled'))) ){ // we don't want to do anything in the above events } else if( // handles the First check box (($('#1:checkbox').attr('checked'))||(!$('#1:checkbox').attr('checked')))|| // handles the Second check box (($('#2:checkbox').attr('checked'))||(!$('#2:checkbox').attr('checked'))) ){ // call the disableThird function disableThird(); } }); // handles enabling and disabling the Third checkbox function disableThird(){ var $checkbox = $('#3:checkbox'); $checkbox.attr('disabled', !$checkbox.attr('disabled')); }; }); For some reason checking #3 will disable it's self. I don't understand why. This works, but one of the requirements is that a non programmer should be able to edit and maintain this. Ideally it'd be great if he could just add new check boxes to the html and it would work. The class for these are define and as far as I know can't be changed. The last check box in the list of check boxes will disable if any of the ones above are selected. Like wise if the last check box is selected, it will disable all the ones above it. I haven't even begun writing and testing that portion as this is quickly becoming too complicated for a non programmer to handle. I myself am more of a PHP coder than a js, let alone jquery, coder. Any help would be greatly appreciated.

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  • ComboBox doesn't fire SelectionChanged event

    - by Budda
    Subj. I am using Silverlight 4 with VS2010, here is a source code: <ComboBox Grid.Row="4" Grid.Column="1" Name="Player2All" MinWidth="50" ItemsSource="{Binding PlayersAll}" SelectionChanged="Player2All_SelectionChanged"> <ComboBox.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding ShortName}"/> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> Here is code behind function: private void Player2All_SelectionChanged(object sender, SelectionChangedEventArgs e) { OpenFileDialog ofd = new OpenFileDialog(); ofd.ShowDialog(); string strPlayerSelected = sender.ToString(); DebugTextBlock.Text = "hoho"; } This function is not called when I change selected item... Why? How can I get that workable? many thanks for any help.

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  • Ranking based string matching algorithm..for Midi Music

    - by Taha
    i am working on midi music project. What i am trying to do is:- matching the Instrument midi track with the similar instrument midi track... for example Flute track in a some midi music is matched against the Flute track in some other music midi file... After matching ,the results should come ranking wise according to their similarity.. Like 1) track1 2) track2 3) track3 I have this sort of string coming from my midi music .. F4/0.01282051282051282E4/0.01282051282051282Eb4/0.01282051282051282 D4/0.01282051282051282C#4/0.01282051282051282C4/0.01282051282051282 Which ranking algorithm with good metrics should i use for such data ? Thanking you in anticipation!

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  • .NET Reference "Copy Local" True / Fasle Being Set Based on Contents of General Assembly

    - by D-Sect
    Hello All. First question for me here. We had a very interesting problem with a Win Forms project. It's been resolved. We know what happened, but we want to understand why it happened. This may help other people out in the future who have a similar problem. The WinForms project failed on 2 of our client's PCs. The error was an obscure kernel.dll error. The project ran fine on 3 other PCs. We found that a .DLL (log4net.dll - a very popular open-source logging library) was missing from our release folder. It was previously in our release folder. Why was it missing in this latest release? It was missing because I must have installed a program on my Dev box that used log4net.dll and it was added to the general assembly. When I checked the SLN's references for log4net.dll, they were changed to "copy local=FALSE". They must have changed automagicially because log4net.dll was present in my GAC. Here's where my question starts: Why did my reference for log4net.dll get changed from COPY LOCAL = TRUE to COPY LOCAL = FALSE? I suspect it's because it was added to my GAC by another program. How can we prevent this from happening again? As it stands now, if I install a piece of software that uses a common library and it adds it to my GAC, then my SLNs that REF that DLL will change from Copy Local TRUE to FALSE. Thank you so much. I hope this helps people out who have a piece of software that runs in some places, but not in others, when it used to run fine in ALL places.

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  • Low latency programming

    - by Sambatyon
    I've been reading a lot about low latency financial systems (especially since the famous case of corporate espionage) and the idea of low latency systems has been in my mind ever since. There are a million applications that can use what these guys are doing, so I would like to learn more about the topic. The thing is I cannot find anything valuable about the topic. Can anybody recommend books, sites, examples on low latency systems?

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  • GWT: uiBinder-based widget cant be instanced second time

    - by Konoplianko
    Hi. I created a widget using GWT uiBinder. It works fine, till the moment when I want to instance it second time. After i call constructor second time it returns only raw description from XML and statements in constructor (rootElement.add( new HTML( "panel1" ), leftId );) are just don't work. It throws no error or warning. Please help Java class: public class DashboardLayout extends Composite { final String leftId = "boxLeft"; final String rightId = "boxRight"; interface DashboardLayoutUiBinder extends UiBinder<HTMLPanel, DashboardLayout> { } private static DashboardLayoutUiBinder ourUiBinder = GWT.create( DashboardLayoutUiBinder.class ); @UiField HTMLPanel htmlPanel; public DashboardLayout() { HTMLPanel rootElement = ourUiBinder.createAndBindUi( this ); this.initWidget( rootElement ); rootElement.add( new HTML( "panel1" ), leftId ); rootElement.add( new HTML( "panel2" ), rightId ); } } XML descriprion: <ui:UiBinder xmlns:ui='urn:ui:com.google.gwt.uibinder' xmlns:g='urn:import:com.google.gwt.user.client.ui' > <g:HTMLPanel ui:field="htmlPanel"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="40%" id="boxLeft" class="boxContextLeft"> </td> <td width="60%" id="boxRight" class="boxContextRight"> </td> </tr> </table> </g:HTMLPanel> </ui:UiBinder>

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  • .NET SerialPort DataReceived event thread interference with main thread

    - by Kiran
    I am writing a serial communication program using the SerialPort class in C# to interact with a strip machine connected via a RS232 cable. When i send the command to the machine it responds with some bytes depending on the command. Like when i send a "\D" command, i am expecting to download the machine program data of 180 bytes as a continous string. As per the machine's manual, it suggests as a best practice to send an unreognized characters like comma (,) character to make sure the machine is initialized before sending the first command in the cycle. My serial communication code is as follows: public class SerialHelper { SerialPort commPort = null; string currentReceived = string.Empty; string receivedStr = string.Empty; private bool CommInitialized() { try { commPort = new SerialPort(); commPort.PortName = "COM1"; if (!commPort.IsOpen) commPort.Open(); commPort.BaudRate = 9600; commPort.Parity = System.IO.Ports.Parity.None; commPort.StopBits = StopBits.One; commPort.DataBits = 8; commPort.RtsEnable = true; commPort.DtrEnable = true; commPort.DataReceived += new SerialDataReceivedEventHandler(commPort_DataReceived); return true; } catch (Exception ex) { return false; } } void commPort_DataReceived(object sender, SerialDataReceivedEventArgs e) { SerialPort currentPort = (SerialPort)sender; currentReceived = currentPort.ReadExisting(); receivedStr += currentReceived; } internal int CommIO(string outString, int outLen, ref string inBuffer, int inLen) { receivedStr = string.Empty; inBuffer = string.Empty; if (CommInitialized()) { commPort.Write(outString); } System.Threading.Thread.Sleep(1500); int i = 0; while ((receivedStr.Length < inLen) && i < 10) { System.Threading.Thread.Sleep(500); i += 1; } if (!string.IsNullOrEmpty(receivedStr)) { inBuffer = receivedStr; } commPort.Close(); return inBuffer.Length; } } I am calling this code from a windows form as follows: len = SerialHelperObj.CommIO(",",1,ref inBuffer, 4) len = SerialHelperObj.CommIO(",",1,ref inBuffer, 4) If(inBuffer == "!?*O") { len = SerialHelperObj.CommIO("\D",2,ref inBuffer, 180) } A valid return value from the serial port looks like this: \D00000010000000000010 550 3250 0000256000 and so on ... I am getting some thing like this: \D00000010D,, 000 550 D,, and so on... I feel that my comm calls are getting interferred with the one when i send commands. But i am trying to make sure the result of the comma command then initiating the actual command. but the received thread is inserting the bytes from the previous communication cycle. Can any one please shed some light into this...? I lost quite some hair just trying to get this work. I am not sure where i am doing wrong

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  • Web-based map authoring with ArcGIS Server?

    - by nw
    I'm embarking on a project in which users will author, save, and share their own maps over the web. We will provide them with a large number of feature classes, but users will effectively author their own maps, map symbologies, etc. Furthermore, they will create and edit their own feature classes, which they can both map and share with other users. The model for AGS map services seems to be: author a map in ArcMap, save an MXD/MSD, publish. I'm struggling to understand how this can help us build a dynamic web mapping platform as described above. Can anyone offer some tips on how to go about it?

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  • Dataflow Programming - Patterns and Frameworks

    - by Styrac
    I just came across the proposed Boost::Dataflow library. It seems like an interesting approach and I was wondering if there are other such alternative frameworks for C++, and if there are any related design patterns. I have not ruled out Boost::Dataflow, I am just looking into any available alternatives so I can understand the domain and my options better (or roll my own if necessary).

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  • UiElement based on another class

    - by plotnick
    I placed a control into a grid. let's say the control is derived from public class 'ButBase' which is derived in its turn from System.Windows.Controls.Button. The code normally compiles and app works just fine. But there's something really annoying. When you try to switch to xaml-design tab it will say 'The document root element is not supported by the visual designer', which is normal and I'm totally okay with that, but the thing is, that all the xaml code is underlined and VS2010 says: 'Cannot create an instance of ButBase' although still normally compiles and able to run. I've tried the same code in VS2008, it said that needs to see a public parameterless constructor in the ButBase, and even after I put one it showed the same error. What do I miss here?

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  • C# - Cast object to IList<T> based on Type

    - by blu
    I am trying out a little reflection and have a question on how the cast the result object to an IList. Here is the reflection: private void LoadBars(Type barType) { // foo has a method that returns bars Type foo = typeof(Foo); MethodInfo method = foo.GetMethod("GetBars") .MakeGenericMethod(bar); object obj = method.Invoke(foo, new object[] { /* arguments here */ }); // how can we cast obj to an IList<Type> - barType } How can we cast the result of method.Invoke to an IList of Type from the barType argument?

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  • Keep focus on blur event

    - by Jim
    I am using jquery to keep the focus on a text box when you click on a specific div. It works well in Internet Explorer but not in Firefox. Any suggestions? var clickedDiv = false; $('input').blur(function() { if (clickedDiv) { $('input').focus(); } }); $('div').mousedown(function() { clickedDiv = true; }) .mouseup(function() { clickedDiv = false }); If you need anymore specifics let me know.

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  • Loading dynamic content and rewrite URL on Hashchange event with Jquery Mobile

    - by user3611500
    I'm building a mobile version for my website using Jquery Mobile API. The framework provides automate AJAX navigation processing. But as far as i know it require "real" pages for loading purpose. What i want to do is override the automate navigation process of it and process the hashchange on my own. But i can't not rewrite the url using window.hashChange, which is running well on my non-mobile website version : $(function () { $(window).off().hashchange(function () { if (location.hash.length > 1) { PageSelect(); } }); $(window).hashchange(); }); I just only want to take advantage on jquery mobile interfaces, i don't want anything with its automate ajax navigation stuff ! I tried to disable it using ajaxEnabled() but got no luck.

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  • Django admin site auto populate combo box based on input

    - by user292652
    hi i have to following model class Match(models.Model): Team_one = models.ForeignKey('Team', related_name='Team_one') Team_two = models.ForeignKey('Team', related_name='Team_two') Stadium = models.CharField(max_length=255, blank=True) Start_time = models.DateTimeField(auto_now_add=False, auto_now=False, blank=True, null=True) Rafree = models.CharField(max_length=255, blank=True) Judge = models.CharField(max_length=255, blank=True) Winner = models.ForeignKey('Team', related_name='winner', blank=True) updated = models.DateTimeField('update date', auto_now=True ) created = models.DateTimeField('creation date', auto_now_add=True ) def save(self, force_insert=False, force_update=False): pass @models.permalink def get_absolute_url(self): return ('view_or_url_name') class MatchAdmin(admin.ModelAdmin): list_display = ('Team_one','Team_two', 'Winner') search_fields = ['Team_one','Team_tow'] admin.site.register(Match, MatchAdmin) i was wondering is their a way to populated the winner combo box once the team one and team two is selected in admin site ?

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