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• How do I create a create and execute an SQL command using OleDB directly?

  - by Pagis

  I want to use the OleDB interfaces directly to open a connection to a DB, create a command and executing it (for example using the ICommandText interface). The main thing I can't find is how to create the connection and the command object and how to connect the object that implements the ICommandText to the connection. In ADO I would just use the ActiveConnection property but I want to do this directly on the OleDB interfaces. Also, if anyone can recommend a tutorial to OleDB, ether online or a book, free or not that would be great (but a tutorial and not just a reference / API) I'm using C++ but any native code would be fine.

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• Offline database access

  - by dtech

  I have a small application which basically consists of an user-friendly CRUD interface to a few tables (and joined tables) It currently works with a MySQL database but I would like to make it available offline. My first thought was to create a SQLite "buffer" in between the MySQL database and the application, e.g. by executing all queries on the SQLite but also storing them in a log table so that they can be executed later in the main database with very basic conflict resolution (I will basically let the user solve it if a conflict is detected) Due to the simplicity of the application this shouldn't be too difficult and good exercise, but I think I would be re-inventing the wheel. So my question is: are there existing solutions or other approaches for this problem?

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• Read Core data in Serial Queue for iPhone app

  - by user1277209

  I have an app which uses Core data and the values are fetched from a link on internet. This runs absolutely fine when I am creating a serial queue in AppDelegate and I am not facing any problem with the same. Now, when I am trying to re-create similar scenario in a UITableViewController and executing the same in a serial queue but when the control reaches NSError *error; NSArray *match = [context executeFetchRequest:fetchRequest error:&error]; execution control disappears and then this code remains in the execution till eternity. Can anyone help me with what exactly is wrong here? FYI, I am passing the same ManagedObjectContext to the serial queue.

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• javascript: what are immediate functions used for [duplicate]

  - by tkoomzaaskz

  This question already has an answer here: Why using self executing function in JavaScript? [duplicate] 4 answers I've been programming in JS since some time, but I have never came upon a need of using immediate functions, for example: (function(){ console.log('hello, I am an immediate function'); }()) What would be the difference if I just wrote: console.log('hello, I am an immediate function'); ? I don't have any access to this function anyway (it is not assigned anywhere). I think (but I'm not sure) that I can implement everything without immediate functions - so why do people use it?

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• What's the most auditable way to organize database maintenance scripting/scheduling?

  - by RenderIn

  I'm using PHP, Oracle and crontab. Crontab is invoking a php script, which is going to synchronize some data between a local and remote database. First I thought about putting this all in one large, anonymous inline PL/SQL block and executing it in PHP. The problem is that without creating a table to audit the procedure it's really opaque to my PHP code until it returns. And then when it does return, the best I can do is receive a string in an out parameter which I've concatenated together as an audit log. Then I considered breaking it up into several SQL statements and have PHP do some intermediate auditing/logging and manipulation of the data between each of them. I'm not really satisfied with either of these. How do you organize maintenance code that is called in a cronjob?

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• Execute a line in a text file

  - by apophis

  Hi I have a program that reads text files filled with code designed to be executed line by line by the program, like a script file. The problem is that I don't no how to do the line executing part. Here is my code, I thought using the \r would fool the console. But it just shows me a list of lines in the file. if (tok[0] == "read" && length == 2) { try { StreamReader tr = new StreamReader(@"C:\Users\Public\"+tok[1]+".txt"); while (!tr.EndOfStream) { Console.WriteLine(tr.ReadLine()); } } catch { Console.WriteLine("No such text file.\n"); } Prompt(); If I knew what to search for to fix my problem in Google, I would have. But I've got no idea. Thanks

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• Dump Hibernate activity to sql script file

  - by zeven

  Hi, I'm trying to log hibernate activity (only dml operations) to an sql script file. My goal is to have a way to reconstruct the database from a given starting point to the current state by executing the generated script. I can get the sql queries from log4j logs but they have more information than the raw sql queries and i would need to parse them and extract only the helpful statements. So i'm looking for a programatic way, maybe by listening the persist/merge/delete operations and accessing the hibernate-generated sql statements. I don't like to reinvent the wheel so, if anybody know a way for doing this i would appreciate it very much. Thanks in advance

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• How to restrict this function from execution in android? Please help

  - by andyfan

  This code is present in one of this activity. I want to restrict addJoke() function from executing if the String variable new_joke is null, has no text or contains just spaces. Here is code protected void initAddJokeListeners() { // TODO m_vwJokeButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { //Implement code to add a new joke here... String new_joke=m_vwJokeEditText.getText().toString(); if(new_joke!=null&&new_joke!=""&&new_joke!=" ") { addJoke(new_joke); } } }); } I don't know why addJoke() function is getting executed even I don't enter any text in EditText field. Please help.

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• WorkFlow and WCF dynamically launching WorkFlows

  - by Raj73

  I have a WF which will be hosted on WCF . The service Contract will contain a single operation containing two parameters. Parameter1 will be a string and will contain the name of the workflow to invoke and parameter two will contain the input for the invoked Work Flow. All operations will take the same parameter. All the operations will return the same return value. I have created the service implementation and I would like to depending on the value of parameter1 start executing the appropriate workflow and return the value (There can be number of workflow classes say Operation1, Operation2...which will be the passed in as the value in Parameter1). How can I instantiate different workflow classes and pass parameters and get the return values from them which I should then pass back to the calling Client. (Also Should I be using ReceiveActivities in all of my Launchable WorkFlow Classes ? ) Any code samples or pointers would help

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• Go, AppEngine: How to structure templates for application

  - by laslowh

  How are people handling the use of templates in their Go-based AppEngine applications? Specifically, I'm looking for a project structure that affords the following: Hierarchical (directory) structure of templates and partial templates Allow me to use HTML tools/editors on my templates (embedding template text in xxx.go files makes this difficult) Automatic reload of template text when on dev server Potential stumbling blocks are: template.ParseGlob() will not traverse recursively. For performance reasons it has been recommended not to upload your templates as raw text files (because those text files reside on different servers than executing code). Please note that I am not looking for a tutorial/examples of the use of the template package. This is more of an app structure question. That being said, if you have code that solves the above problems, I would love to see it. Thanks in advance.

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• No mapping for LONGVARCHAR in Hibernate 3.2

  - by jimbokun

  I am running Hibernate 3.2.0 with MySQL 5.1. After updating the group_concat_max_len in MySQL (because of a group_concat query that was exceeding the default value), I got the following exception when executing a SQLQuery with a group_concat clause: "No Dialect mapping for JDBC type: -1" -1 is the java.sql.Types value for LONGVARCHAR. Evidently, increasing the group_concat_max_len value causes calls to group_concat to return a LONGVARCHAR value. This appears to be an instance of this bug: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3892 I guess there is a fix for this issue in Hibernate 3.5, but that is still a development version, so I am hesitant to put it into production, and don't know if it would cause issues for other parts of my code base. I could also just use JDBC queries, but then I have to replace every instance of a SQLQuery with a group_concat clause. Any other suggestions?

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• In C# or .NET, is there a way to prevent other threads from invoking methods on a particular thread?

  - by YWE

  I have a Windows Forms application with a BackgroundWorker. In a method on the main form, a MessageBox is shown and the user must click the OK button to continue. Meanwhile, while the messagebox is being displayed, the BackgroundWorker finishes executing and calls the RunWorkerCompleted event. In the method I have assigned to that event, which runs on the UI thread, the Close method is called on the form. Even though the method that shows the message box is still running, the UI thread is not blocking other threads from invoking methods on it. So the Close method gets called on the form. What I want is for the UI thread to block other threads' invokes until the method with the message box has finished. Is there an easy way to do that?

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• [jQuery] Get width of element after resizing it

  - by infinito

  Hello, Is it possible to get the size of an element after resizing it using $(el).css()? My code is: function resize() { $(".combobox").css('width', '100%'); var width = $(".combobox").width(); } I've get the real value of the combobox only after calling the function a second time. The first time is gets the width before executing $(".combobox").css('width', '100%'); I suppose this is fault of the DOM not being recreated after the .css(). Is there any way to force DOM reloading? Thanks in advance!

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• joomla's hwdvideoshare module help

  - by Sam

  hi! i using hwdvideoshare module in joomla and i can't use the Method 1 for Direct Video Conversions. it requires the following things to be done: * The exec() function need to be enabled in PHP. * safe_mode must be set to Off. You can check that at Joomla Help -> System Info -> PHP Information) * php-cli (Command Line Interface to PHP) must be installed in the server and its path set in Server Settings * safe_mode must be set to Off for php-cli. You can check that executing php -i | grep safe_mode from the command line i've checked the first two settings. i don't know whether php-cli is enabled or not..i'm using php5..how do i enable it, without messing with other php packages?

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• What happens when a OSGi service using JNI is unregistered while in use?

  - by schngrg

  As I understand, OSGi services can be unregistered anytime, including when they are in use. Consider an OSGi service which internally makes a long-running JNI call. And while that JNI call is executing, the service is unregistered by OSGi. Will the JNI call be allowed to finish or terminated mid-way? What if it was just a normal non-jni long running Java call? Will that call be allowed to finish execution or will OSGi terminate everything immediately and unregister? What is the expected behavior in such a case? Does the expected behavior depend on if the service was loaded using a 'tracker' or not? SG

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• How can I treat a sequence value like a generated key?

  - by Jeff Knecht

  Here is my situation and my constraints: I am using Java 5, JDBC, and DB2 9.5 My database table contains a BIGINT value which represents the primary key. For various reasons that are too complicated to go into here, the way I insert records into the table is by executing an insert against a VIEW; an INSTEAD OF trigger retrieves the NEXT_VAL from a SEQUENCE and performs the INSERT into the target table. I can change the triggers, but I cannot change the underlying table or the general approach of inserting through the view. I want to retrieve the sequence value from JDBC as if it were a generated key. Question: How can I get access to the value pulled from the SEQUENCE. Is there some message I can fire within DB2 to float this sequence value back to the JDBC driver?

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• how to add multiple markers to mapview in android?

  - by Vishakha Kinjawadekar

  I am working on android geolocation application in that I have added marker for current location and want to add markers for other geopoints also. I have created objects of OverlayItem for other points and adding it to ItemizedOverlay like itemizedOverlay.addOverlay(overlayItem) and then adding it to mapOverlay.add(itemizedOverlay). For the current location geopoints getting from "Location" object and other points are hard-coded values. After executing it only current location marker is displayed not the other hardcoded points.How can I add marker for these geopoints and where? Thanks , Vishakha.

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• JQuery code does not work not understanding the markup

  - by Andrae Browne

  I am trying to make a simple animation using JQuery. I have tried adding the script externally(external file) and internally(within script tags). I have testing if the page is recognizing the script using the alert function, but the script is not executing. I am thinking that is has something to do with the syntax. $("#container5").hover(function() { //hover in $(#container5).animate({ height: "250", width: "250", left: "-=50", top: "-=50", }, "fast"); }, function() { //hover out $(#container5).animate({ height: "200", width: "200", left: "+=50", top: "+=50", }, "fast"); } })(jQuery);

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• Finding data file location while using Microsoft Test Framework

  - by Nair

  I have been using NUnit and now I am switching to the Microsoft Unit Test frame work. In my test project I have a folder called TestData and I kept all my test input data files there. I want to use that files for my unit testing. In my test code, I am using Application name space and assembly name space but I can not get to the data folder directly until unless I write a code to find and replace some string to point to the data folder. I am sure someone might have run into the same problem, is the solution to change the path through program or is there a API call which will let us get to executing assembly folders? Thanks,

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• scikit learn extratreeclassifier hanging

  - by denson

  I'm running the scikit learn on some rather large training datasets ~1,600,000,000 rows with ~500 features. The platform is Ubuntu server 14.04, the hardware has 100gb of ram and 20 CPU cores. The test datasets are about half as many rows. I set n_jobs = 10, and am forest_size = 3*number_of_features so about 1700 trees. If I reduce the number of features to about 350 it works fine but never completes the training phase with the full feature set of 500+. The process is still executing and using up about 20gb of ram but is using 0% of CPU. I have also successfully completed on datasets with ~400,000 rows but twice as many features which completes after only about 1 hour. I am being careful to delete any arrays/objects that are not in use. Does anyone have any ideas I might try?

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• What's the fastest way to get directory and subdirs size on unix using Perl?

  - by ivicas

  I am using Perl stat() function to get the size of directory and its subdirectories. I have a list of about 20 parent directories which have few thousand recursive subdirs and every subdir has few hundred records. Main computing part of script looks like this: sub getDirSize { my $dirSize = 0; my @dirContent = <*>; my $sizeOfFilesInDir = 0; foreach my $dirContent (@dirContent) { if (-f $dirContent) { my $size = (stat($dirContent))[7]; $dirSize += $size; } elsif (-d $dirContent) { $dirSize += getDirSize($dirContent); } } return $dirSize; } The script is executing for more than one hour and I want to make it faster. I was trying with the shell du command, but the output of du (transfered to bytes) is not accurate. And it is also quite time consuming. I am working on HP-UNIX 11i v1.

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• Problem in removing hardcoded values using temp table...

  - by Shahsra

  Hi All, First of all Wish u all Happy New Year. I have a problem in writing query. While executing my query I am getting an error. Query: select case when S.R1 = '6' then 5 when S.R1 = '7' then 6 when S.R1 = '8' then 7 when S.R1 = '9' then 8 when S.R1 ='10' then 9 else S.R1 end as Q FROM [HelpService].[dbo].[help] s ----------------------------------------------- SELECT [Source], [Score] INTO #Temp_Q FROM [HelpDesk].[dbo].[Survey] WHERE [data_Source Name] = 'Text Data' ----------------------------------------------- select CONVERT(REAL, a.[Dell Score]) as Q FROM [HelpService].[dbo].[help] s LEFT OUTER JOIN #CE_Temp_Q a on s.[R1] = a.[Source] ERROR Msg 8114, Level 16, State 5, Line 1 Error converting data type varchar to real. What I am asked to do is I need to remove the hard coded values and need to write queries with a temp table. Thanks in Advance, Shashra

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• why gwt-user-1.7.0 contains Servlet API classes

  - by Anton S. Kraievoy

  Does anyone know any sane reason for such bundling decision? Google engineers act wisely in most cases, so this kinda surprized me. This would cause collisions with other versions of servlet API pulled via Maven dependencies: webapp classpath will likely contain version which is bundled with GWT; container may refuse to load the GWT jar as it contains the javax.servlet package; in most cases this will likely deviate classpaths across your IDE's debugger and the really executing VM. Link to the jar in question (just so you see the same thing after unzipping as I do): http://repo1.maven.org/maven2/com/google/gwt/gwt-user/1.7.0/gwt-user-1.7.0.jar

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• Pass off execution to different/specific thread in Java

  - by Mike

  I have about 4 threads. One thread keeps checking some data that the other thread is updating. The others are doing some processing in the background. All have been started at this point. My question is when the checking thread sees that the data has not been updated yet I currently sleep for a little bit but is there any way for me to tell the system to back to executing the thread that does the updating? That or is there any way I can put something like a listener on the data(a String) and once its updated an event will fire that will do what it needs to do? I tried using yield() and it seemed to just keep returning to the thread I called yield() from. Thanks

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• How to link .lib library in linux

  - by giga

  I'm pretty new to c programming and want to port a windows c application to linux. My code uses a .lib file va_g729.lib - is it possible to use the same library in Linux and compile it with gcc? All my .c and .h files along with the one .lib files are in the same directory. What I'm doing now is executing this command in the directory: gcc *.c -lm and I get following errors: lbcodec2.c:(.text+0xa6b): undefined reference to `va_g729a_init_encoder' lbcodec2.c:(.text+0xa83): undefined reference to `va_g729a_encoder' collect2: error: ld returned 1 exit status Is it possible to link the .lib file and compile with gcc? Thanks.

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