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  • Crash when checking BOF property of pessimistic locked ADO recordset

    - by Patrick
    Bit of an odd one for you: I've got two connections to a database, on one I've opened a _RecordsetPtr with a pessimistic lock. I can no longer send an UPDATE command on the other connection. I can send a SELECT command on the second connection and data is returned. If I use a read only lock then there are no problems however when I use a pessimistic lock on the second connection as well I can check the State == adStateOpen but the program hangs when I test the BOF property! If I don't test the BOF property and try to call moveNext on the second connection the software hangs If I do neither of these I am able to access the data via the second connection but trying to access the data from the first connection causes the software to hang. Any one seen anything similar as I'm a bit stuck? EDIT : it wasn't hanging, someone had put a 30 minute timeout on the connection and I wasn't waiting that long while testing...

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  • Invalidating UITableView contents

    - by Roman
    I have an application with several UITableViewControllers. Now, the user is allowed to change "Data source". In that case I need to invalidate (reset) data in the relevant UITableViews. I figured out, that I can use NSNotificationCenter and add these controllers as observers to events which will be generated when the data source changes. The question is, how do I reset the underlying tables? I can, of course, set some boolean flag, and call UITableView:reloadData in viewWillAppear or viewDidAppear, but I was wondering, if there's a cleaner way of doing it. Or perhaps I'm completely missing the point, and I don't need NSNotificationCenter altogether. Thank you very much in advance.

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  • What is the best way to handle dynamic content_type in Sinatra

    - by lusis
    I'm currently doing the following but it feels "kludgy": module Sinatra module DynFormat def dform(data,ct) if ct == 'xml';return data.to_xml;end if ct == 'json';return data.to_json;end end end helpers DynFormat end My goal is to plan ahead. Right now we're only working with XML for this particular web service but we want to move over to JSON as soon as all the components in our stack support it. Here's a sample route: get '/api/people/named/:name/:format' do format = params[:format] h = {'xml' => 'text/xml','json' => 'application/json'} content_type h[format], :charset => 'utf-8' person = params[:name] salesperson = Salespeople.find(:all, :conditions => ['name LIKE ?', "%#{person}%"]) "#{dform(salesperson,format)}" end It just feels like I'm not doing it the best way possible.

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  • Python - How can I make this code asynchronous?

    - by dave
    Here's some code that illustrates my problem: def blocking1(): while True: yield 'first blocking function example' def blocking2(): while True: yield 'second blocking function example' for i in blocking1(): print 'this will be shown' for i in blocking2(): print 'this will not be shown' I have two functions which contain while True loops. These will yield data which I will then log somewhere (most likely, to an sqlite database). I've been playing around with threading and have gotten it working. However, I don't really like it... What I would like to do is make my blocking functions asynchronous. Something like: def blocking1(callback): while True: callback('first blocking function example') def blocking2(callback): while True: callback('second blocking function example') def log(data): print data blocking1(log) blocking2(log) How can I achieve this in Python? I've seen the standard library comes with asyncore and the big name in this game is Twisted but both of these seem to be used for socket IO. How can I async my non-socket related, blocking functions?

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  • Saving state between actions.

    - by Igor
    Hi all! I'd like to ask for a solution. For example we have a page. And I have a link to a another action from this page. I want to have an ability to save the values of entered data on the page. For instance I go to another page enter data and go back. Like the wizard. But the problem is that we can come to the action from different pages. And it need to save several data types. Is it understand? Any suggestions? I'd like to have common solution....

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  • comparing two tables

    - by sza
    I have two identical table ie all the columns are identical and one of the datatype is Text, one is varchar(255) and the rest are int. Lets say the table name is 'AAAAA'. Table AAAAA was processed and backed up earlier this month. Both the tables were storing data and now the second table is only storing data. I need to find unmatching records from the second table (BBBBB) which is storing data right now and add those records to Table AAAAA. Your help will be highly appreciated. I tried to use 'EXCEPT' but it does not support text datatype. I'm using SQL Server 2005.

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  • Is there a %in% operator accros multiple columns

    - by RobinLovelace
    Imagine you have two data frames df1 <- data.frame(V1 = c(1, 2, 3), v2 = c("a", "b", "c")) df2 <- data.frame(V1 = c(1, 2, 2), v2 = c("b", "b", "c")) Here's what they look like, side by side: > cbind(df1, df2) V1 v2 V1 v2 1 1 a 1 b 2 2 b 2 b 3 3 c 2 c You want to know which observations are duplicates, across all variables. This can be done by pasting the cols together and then using %in%: df1Vec <- apply(df1, 1, paste, collapse= "") df2Vec <- apply(df2, 1, paste, collapse= "") df2Vec %in% df1Vec [1] FALSE TRUE FALSE The second observation is thus the only one in df2 and also in df1. Is there no faster way of generating this output - something like %IN%, which is %in% across multiple variables, or should we just be content with the apply(paste) solution?

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  • Correct approach to validate attributes of an instance of class

    - by systempuntoout
    Having a simple Python class like this: class Spam(object): __init__(self, description, value): self.description = description self.value = value Which is the correct approach to check these constraints: "description cannot be empty" "value must be greater than zero" Should i: 1.validate data before creating spam object ? 2.check data on __init__ method ? 3.create an is_valid method on Spam class and call it with spam.isValid() ? 4.create an is_valid static method on Spam class and call it with Spam.isValid(description, value) ? 5.check data on setters declaration ? 6.... Could you recommend a well designed\Pythonic\not verbose (on class with many attributes)\elegant approach?

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  • How can I evaluate variable to another variable before assigning?

    - by HH
    #!/usr/bin/python # # Description: trying to evaluate array -value to variable before assignment # but it overwrites the variable # # How can I evaluate before assigning on the line 16? #Initialization, dummy code? x=0 y=0 variables = [x, y] data = ['2,3,4', '5,5,6'] # variables[0] should be evaluted to `x` here, i.e. x = data[0], how? variables[0] = data[0] if ( variables[0] != x ): print("It does not work, why?"); else: print("It works!");

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  • i have a arraylist where i am verifying particular object is existing or not but even it exists it always returns false

    - by Raghavender Reddy
    hi i have class called userdata which returns the Userarraylist which is of type User. when ever i try to use contains method to check particular property is existing or not it always returns false why? Actually i want the array list to be generic which should return the objects that are set in array list. String className = data.getUserData().get(0).getClass().getSimpleName(); if(className.equalsIgnoreCase("User")) { ArrayList<User> userdata=new ArrayList(); userdata = data.getUserData(); System.out.println(data.getUserData().contains(u.getUserId())); if(userdata.contains(u.getUserName())) { System.out.println(userdata.get(0).getEmailId()); } }

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  • Best way to convert between [Char] and [Word8]?

    - by cmars232
    I'm new to Haskell and I'm trying to use a pure SHA1 implementation in my app (Data.Digest.Pure.SHA) with a JSON library (AttoJSON). AttoJSON uses Data.ByteString.Char8 bytestrings, SHA uses Data.ByteString.Lazy bytestrings, and some of my string literals in my app are [Char]. This article seems to indicate this is something still being worked out in the Haskell language/Prelude: http // hackage.haskell.org/trac/haskell-prime/wiki/CharAsUnicode And this one lists a few libraries but its a couple years old: http //blog.kfish.org/2007/10/survey-haskell-unicode-support.html [Links broken because SO doesn't trust me -- whatever...] What is the current best way to convert between these types, and what are some of the tradeoffs? I don't want to pick something that is obsolete... Thanks!

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  • Using 50+ 3rd party web services, should I use BizTalk or just C#?

    - by typemismatch
    I'm building a back-end application that needs to fetch data on various schedules from over 50+ 3rd party web services and that number will continue to grow. The data from these services can currently be grouped into 3 types so each response needs to be mapped to 1 of 3 known schemas. Writing custom c# to hit each web service appears to be a management nightmare never mind having all that data mapping in code. The current thinking is build this on top of BizTalk 2009, still a lot of maintenance but at least a well defined platform with mapping/transformation capabilities already. I'm looking for any advise from anyone who might have done this before, does this really buy us anything? I am aware of a lack of polling features in BTS however there are enough work arounds to feel comfortable about the solution. Thanks!

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  • Stop Submit With empty and error Input Values Using PHP

    - by user3615781
    I am using the following code for sending data to database, but it sends the data even the values of the fields are incorrect or empty. So can anyone help me solve this by using php? Here is my code: <?php //Connecting to sql db $connect = mysqli_connect("localhost","root","","form"); /* check connection */ if (!$connect) { die('Connect Error: ' . mysqli_connect_error()); } //Sending data to sql db $result = mysqli_query($connect,"INSERT INTO students(name,email,website,comment,gender) VALUES('$name','$email','$website','$comment','$gender')"); if (!$result) { die('Query Error:'. mysqli_error($connect)); } ?>

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  • Specifying $(this).val() for two different elements (by class)

    - by Chaya Cooper
    What would be the correct syntax for specifying 2 elements by class to evaluate their values when they have different classes? This snippet adds and/or removes values from "increase_priority1" when the user has selected both a complaint and ranked the importance level of the issue, however when I added the 2nd element (".complaint select") to the If Statement it stopped working properly and only accepts input from the 2nd item (Waist) after the 1rst item (Shoulders) has been selected. I believe the problem is that it's unable to determine which ".complaint select" to use, but I haven't been able to figure out how to use (this) for the 2nd element, or another similar approach. The complete function includes apx. 20 similar pairs of If Statements to set & unset other elements, and a working example with 4 pairs is available at http://jsfiddle.net/chayacooper/vWLEn/168/ I'm trying to avoid using ID's because that becomes pretty cumbersome to do for 25 Select elements and each of their values (ID's were also problematic because it stopped working when I added a 2nd element to the If Statement for removing/unsetting a value) Javascript var $increase_priority1 = $(".increase_priority1"); // If value is "Shoulders", complaint was Shoulders too small (select name=Shoulders value=Too_small) and it was assigned a level 1 priority (select class="ranking shoulders" value=1). // var's for other issues and priority levels go here $(".ranking, .complaint select").change(function() { var name = $(this).data("name"); //get priority name if ($(".complaint select").val() === "Too_small" && $(this).val() == 1 && !$(this).data("increase_priority1")) { //rank is 1, and not yet added to priority list $("<option>", {text:name, val:name}).appendTo($increase_priority1); $(this).data("increase_priority1", true); //flag as a priority item } if ($(this).data("increase_priority1") && ($(this).val() != 1 || $(".complaint select").val() != "Too_small")) { //is in priority list, but now demoted $("option[value=" + name + "]", $increase_priority1).remove(); $(this).removeData("increase_priority1"); //no longer a priority item } // Similar If Statements to set & unset other elements go here }); HTML <div> <label>To Increase - 1rst Priority <select name="modify_increase_1rst[]" class="increase_priority1" multiple> </select></label> </div> <div> <span class="complaint"> <label>Shoulders</label> <select name=Shoulders> <option value="null">Select</option><option value="Too_small">Too Small</option><option value="Too_big">Too Big</option><option value="Too_expensive">Too expensive</option> </select> </span> <label>Ranking</label> <select name="importance_bother_shoulders" class="ranking shoulders" data-name="Shoulders"> <option value="Null">Select</option><option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option> <option value="5">5</option> </select> </div> <div> <span class="complaint"> <label>Waist</label> <select name=Waist> <option value="null">Select</option><option value="Too_small">Too Small</option><option value="Too_big">Too Big</option><option value="Too_expensive">Too expensive</option> </select> </span> <label>Ranking</label> <select name="importance_bother_waist" class="ranking waist" data-name="Waist"> <option value="Null">Select</option><option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option> <option value="5">5</option> </select> </div>

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  • Use parameters with CTL

    - by Hal
    Hi. I am using a CTL file to load data stored in a file to a specific table in my Oracle database. Currently, I launch the loader file using the following command line: sqlldr user/pwd@db data=my_data_file control=my_loader.ctl I would like to know if it is possible to use specify parameters to be retrieved in the CTL file. Also, is it possible to retrieve the name of the data file used by the CTL to fill the table ?I also would like to insert it for each row. I currently have to call a procedure to update previously inserted records. Any help would be appreciated !

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  • JSON - Php/SQL iPhone APP Questions/Help

    - by chance
    Hey group, first time posting here I am somewhat new to the JSON/PHP/mySQL world, but been around iPhone designing for the past few years, though this topic of conversation is a while new area I am entering. I have done JSON iPhone examples that allow me to create a UITableView and display the JSON data into the TableViewCells (CustomCells) and displays the data (NSDictionary)into UILabels The problem I am having now, is that I want an APP that displays this information from the JSON into just a couple of UILabel's on a regular UIViewController and not a UITableView any help would greatly be appreciated, the example I used and learned for JSON and UITABLE was from http://tempered.mobi/%20 I used that example from my app, but incorporated a few other things like CUSTOM cells however now when the USER selects the specific CELL I want it to load specific data from another JSON file, and cannot get it to load in a UILabel or UITextView in a UIViewController HELP :-)

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  • How do I create if statements in php to perform a specific action depending on what form has string in it

    - by user1637284
    Im trying to create a grid on my page in each cell there will be a simple one line form. If a person enters data into lets say FieldA I would like the php to perform actionA but if the data was entered in FieldF I would like actionF performed. Is this possible without having to create a php for each cell and upload all those php files? Or is there a way to perform the GET method in each form to append the data to the end of the action url without the field name showing (ie sample.com/somestuff/fieldA instead of sample.com/somestuff/fieldname=fieldA) thus not needing php at all?

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  • Why can't I open a new window on my jquery ajax callback?

    - by KyleGobel
    to show my problem in a couple examples... THIS WORKS $.post("SomePage.aspx", { name : "value" }, function (data) { alert(data); }, "text"); THIS DOESN'T WORK $.post("SomePage.aspx", { name : "value" }, function (data) { window.open("http://www.google.com"); }, "text"); In the first example, I get alerted with what i'm expecting. In the second example, nothing happens. No window is opened. If I add an alert or something before or after the window.open call, the alert works fine, but the window doesn't open. If I add a window.open completly after the $.post method, the window opens fine (of course this doens't help me at all). I'm wondering why I can't open a window in the callback. What do I have to do to be able to open a window? I'd like to open a window to show some fancy results. Any help is appreciated, thanks.

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  • HowTo check whether Exception Block is available for the main PLSQL block or routine

    - by user1297211
    I am trying to think of a validator that checks for Exception block available in PL/SQL block or any routine for the main body ( Highlighted in Bold). Eg : DECLARE some data Procedure xyx IS BEGIN .... EXCEPTION .. END; BEGIN some data BEGIN .... EXCEPTION .. END; **EXCEPTION** some data BEGIN .... EXCEPTION .. END; END; This is a simple example there can be many other scenarios but my need id to find that Exception block is avaialble for the main block of PL/SQL code. Please let me know if you have any suggestion. Thanks

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  • How to store matrix information in MySQL?

    - by dedalo
    Hi, I'm working on an application that analizes music similarity. In order to do that I proccess audio data and store the results in txt files. For each audio file I create 2 files, 1 containing and 16 values (each value can be like this:2.7000023942731723) and the other file contains 16 rows, each row containing 16 values like the one previously shown. I'd like to store the contents of these 2 file in a table of my MySQL database. My table looks like: Name varchar(100) Author varchar (100) in order to add the content of those 2 file I think I need to use the BLOB data type: file1 blob file2 blob My question is how should I store this info in the data base? I'm working with Java where I have a double array containing the 16 values (for the file1) and a matrix containing the file2 info. Should I process the values as strings and add them to the columns in my database? Thanks

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  • Problem with outputting html via AJAX

    - by Marek
    Hello I am new to JS and AJAX, but I have to do my homework. I choose jQuery, so it little easy now. I want to get a html via AJAX request, but in result it looks, ex: <fieldset id=\"item4\" class=\"item\"><legend>Odno\u015bnik 4<\/legend> I set response content-type to text/html. When I outputting result on server everything is ok. jQuery code: enter code here $.ajax({ dataType : 'html', data : 'add_sz='+changeSize+'&next_id='+nextId, url : '/kohana/admin/menus/ajax_items_refresh', error : function(err, xhr, status) { msgOutput.text('error msg'); }, success : function(data, xhr, textStatus) { msgOutput.text('success msg'); var tabs = $('#items-list'); $('#items-wrap').html($('#items-wrap').html() + data); Could somebody help me? What I am doing wrong? Kind Regards.

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  • IE8 is still caching my requests even with mathrandom.

    - by Ozaki
    TLDR IE is still caching my requests even with Math.random() included in the URL. So I added math random onto the end of my url: var MYKMLURL = 'http://' + host + 'data/pattern?key='+ Math.random(); I also added math random onto my function param: window.setTimeout(RefreshPatternData, 1000, MYKMLLAYER); function RefreshPatternData(layer) { layer.loaded = false; layer.setVisibility(true); layer.refresh({ force: true, params: { 'key': Math.random()} }); setTimeout(RefreshPatternData, 30000, MYKMLLAYER); } So the request appears as http://host/data/pattern?key=35678652545 etc. It changes everytime the request is made. It works in Firefox & Chrome & Safari etc. But IE8 is still caching the data and not updating my layer. Any ideas as to why this might be occuring?

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  • What's the most efficient way to manage large datasets with Javascript/jQuery in IE?

    - by RenderIn
    I have a search that returns JSON, which I then transform into a HTML table in Javascript. It repeatedly calls the jQuery.append() method, once for each row. I have a modern machine, and the Firefox response time is acceptable. But in IE 8 it is unbearably slow. I decided to move the transformation from data to HTML into the server-side PHP, changing the return type from JSON to HTML. Now, rather than calling the jQuery.append() time repeatedly, I call the jQuery.html() method once with the entire table. I noticed Firefox got faster, but IE got slower. These results are anecdotal and I have not done any benchmarking, but the IE performance is very disappointing. Is there something I can do to speed up the manipulation of large amounts of data in IE or is it simply a bad idea to process very much data at once with AJAX/Javascript?

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  • Split string on first two colons

    - by Mark Miller
    I would like to split a column of strings on the first two colons, but not on any subsequent colons: my.data <- read.table(text=' my.string some.data 12:34:56:78 -100 87:65:43:21 -200 a4:b6:c8888 -300 11:bb:ccccc -400 uu:vv:ww:xx -500', header = TRUE) desired.result <- read.table(text=' my.string1 my.string2 my.string3 some.data 12 34 56:78 -100 87 65 43:21 -200 a4 b6 c8888 -300 11 bb ccccc -400 uu vv ww:xx -500', header = TRUE) I have searched extensively and the following question is the closest to my current dilemma: Split on first comma in string Thank you for any suggestions. I prefer to use base R.

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  • iOS Development: How can I encapsulate a string in an NSData object?

    - by BeachRunnerJoe
    Hello. I'm building a multiplayer game on the iPhone and I need to send string data to the other players in the game. To do that, I need to encapsulate my NSString* string data in an NSData object somehow. Here's an example of how my code is structured... typedef struct { PACKETTYPE packetType; ??? stringToSend; //<---not sure how to store this } StringPacket; StringPacket msg; msg.packetType = STRING_PACKET; msg.stringToSend = ... // <---not sure what to do here NSData *packet = [NSData dataWithBytes:&msg length:sizeof(StringPacket)]; So my question is, if StringPacket is a struct defined in my header, what type should the stringToSend property be so that I can easily call the dataWithBytes method of NSData to encapsulate the packet data in an NSData object? Thanks for your wisdom!

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