Search Results

Search found 30279 results on 1212 pages for 'database drift'.

Page 907/1212 | < Previous Page | 903 904 905 906 907 908 909 910 911 912 913 914  | Next Page >

• C# MySQL Lost Connection

  - by Adam

  Hi. I have C# application and I'm using MySQL database. Everything seems to be fine except one thing. Our computer network is little bit unstable. When I'm trying to execute query and the computer simultaneously loses connection to the mysql server (I'm simulating this situation by unplugging the network cable from computer which is mysql server), the program is trying to do something for long time (tens seconds). I would like to specify something like timeout which ends the query by exception or something similar. I tried to add timeout parameters to connection string but with no effect (I've used ConnectionTimeout and DefaultCommandTimeout). Is there any other way to identify lost connection after few seconds? Thank you Adam P.S. Sorry for my english, I'm not native speaker.

  Read the article

• Get control instance in asp.net dynamic data

  - by Ashwani K

  Hello All: I am creating a web application using Asp.net dynamic data. I am using GridView to show data from the database. In the grid view I am having following code for columns <Columns> <asp:DynamicField DataField="UserId" UIHint="Label" /> <asp:DynamicField DataField="Address" UIHint="Address"/> <asp:DynamicField DataField="CreatedDate" UIHint="Label" /> </Columns> But, before displaying I want to do some processing in C# code for each row. In normal ASP.net grid view we can handle OnRowDataBound method, and using FindControl("controlid") we can get the control instance, but in case of dynamic data, I am not getting any id attribute for columns, so I am not able to get the control instance to show updated data in that control depending on some conditions. Thanks, Ashwani

  Read the article

• Insert a list of objects using MyBatis 3

  - by T Soares

  I've tried to insert a list in a database but I've got some the error: org.springframework.jdbc.BadSqlGrammarException: SqlSession operation; bad SQL grammar []; nested exception is java.sql.SQLException: ORA-00913: too many values (...). The code that I've used: <insert id="insertListMyObject" parameterType="java.util.List" > INSERT INTO my_table (ID_ITEM, ATT1, ATT2) VALUES <foreach collection="list" item="item" index="index" open="(" close=")" separator=","> #{item.idItem, jdbcType=BIGINT}, #{item.att1, jdbcType=INTEGER}, #{item.att2, jdbcType=STRING} </foreach> </insert> My dao cals the method: SqlSessionTemplate().insert(MAPPER+".insertListMyObject", parameterList); Where the parameterList is: List<MyObjects>. Does someone have a clue about what's this error? Or if does exists a better way to do multiples inserts operation. Many thanks!

  Read the article

• How to store user preferences? Cookie becomes bigger..

  - by ari

  My application (Asp.Net MVC) has great interaction with the user interface (jQuery/js). For example, setting various searches charts, moving the gadgets on the screen and more .. I of course want to keep all data for each user. So that data will be available from any page in the Dumaine and the user will accepts his preferences. Now I keep all data in a cookie because it did not seem logical asynchronous access to the server each time the user changes something and thet happens a lot.When the user logout from the application I save the cookie to the database. The problem is the cookie becomes very large. The thought that this huge cookie is attached to each server request makes me feel that my attitude is wrong. Another problem cookies have size limit. It varies from your browser but I definitely have been close to the border - my cookie easily become 4kb Is there another solution?

  Read the article

• solution for COMET and PHP

  - by codemaker

  Is there a real solution for COMET AND PHP combination? Basically, I've come to a point that I need to update a user home page periodically whenever there is new data in the database. As far as I understand, I need to open a persistent connection between my server and my clients browsers to update the contents of their home page as soon as new info. available without dedicating a lot of resources but I had no luck finding anything clear about this issue. I read many articles suggests that PHP is not a good language to implement COMET. My web application is completely programmed in PHP and I don't want to learn another language but if I'm forced to, Would you suggest a good language to start with? Do you think that I can program an interface just to handle this issue? Thanks in advance.

  Read the article

• How to use IObservable/IObserver with ConcurrentQueue or ConcurrentStack

  - by James Black

  I realized that when I am trying to process items in a concurrent queue using multiple threads while multiple threads can be putting items into it, the ideal solution would be to use the Reactive Extensions with the Concurrent data structures. My original question is at: http://stackoverflow.com/questions/2997797/while-using-concurrentqueue-trying-to-dequeue-while-looping-through-in-parallel/ So I am curious if there is any way to have a LINQ (or PLINQ) query that will continuously be dequeueing as items are put into it. I am trying to get this to work in a way where I can have n number of producers pushing into the queue and a limited number of threads to process, so I don't overload the database. If I could use Rx framework then I expect that I could just start it, and if 100 items are placed in within 100ms, then the 20 threads that are part of the PLINQ query would just process through the queue. There are three technologies I am trying to work together: Rx Framework (Reactive LINQ) PLING System.Collections.Concurrent structures

  Read the article

• How can I set MAXLENGTH on input fields automatically?

  - by Gary McGill

  I'm using ASP.NET MVC RC2. I have a set of classes that were auto-generated "Linq-to-SQL Classes", where each class models a table in my database. I have some default "edit" views that use the neat-o Html.TextBoxFor helper extension to render HTML input fields for the columns in a table. However, I notice that there is no MAXLENGTH attribute specified in the generated HTML. A quick google shows that you can add explicit attributes using TextBoxFor etc. but that would mean that I need to hard-code the values (and I need to remember to do it for every input). This seems pretty poor, considering that everything was automatically generated directly from the DB, so the size of the columns is known. (Although, to be fair, the web-side stuff has to work with any model objects, not just with Linq-to-SQL objects). Is there any nice way of getting this to do the right thing?

  Read the article

• Do Any Client-Side JavaScript Frameworks Integrate Well With Node.js+Express.js+socket.io.js?

  - by Tom D

  I'm building an webapp using Node.js+Express.js+socket.io.js on the backend. Do any of the popular front-end frameworks (Agility, Angular, Backbone, Closure, Dojo, Ember, GWT, jQuery, Knockback, Knockout, Spine, YUI, etc) integrate well with this backend for "real-time" applications? I want my application to have a very "real-time" feel. Specifically, when a user submits a form I want the information to be sent using web sockets to the backend for validation and (if validation passes) to be updated in the database. Then, the server-side will use web sockets to send a confirmation that the data was saved or some list of errors. I will use the server's response to update the page using JavaScript. I know all this can be done with any of the listed frameworks. I'm interested in features of particular frameworks that will help the framework integrate better with the Node-based backend than the other frameworks.

  Read the article

• Django blog reply system

  - by dana

  hello, i'm trying to build a mini reply system, based on the user's posts on a mini blog. Every post has a link named reply. if one presses reply, the reply form appears, and one edits the reply, and submits the form.The problem is that i don't know how to take the id of the post i want to reply to. In the view, if i use as a parameter one number (as an id of the blog post),it inserts the reply to the database. But how can i do it by not hardcoding? The view is: def save_reply(request): if request.method == 'POST': form = ReplyForm(request.POST) if form.is_valid(): new_obj = form.save(commit=False) new_obj.creator = request.user new_post = New(1) #it works only hardcoded new_obj.reply_to = new_post new_obj.save() return HttpResponseRedirect('.') else: form = ReplyForm() return render_to_response('replies/replies.html', { 'form': form, }, context_instance=RequestContext(request)) i have in forms.py: class ReplyForm(ModelForm): class Meta: model = Reply fields = ['reply'] and in models: class Reply(models.Model): reply_to = models.ForeignKey(New) creator = models.ForeignKey(User) reply = models.CharField(max_length=140,blank=False) objects = NewManager() mentioning that New is the micro blog class thanks

  Read the article

• Entity Framework Performance Problem

  - by Steve Horn

  I'm hoping that someone can help me understand how to overcome a performance problem I'm running into with the latest version of the Entity Framework. In my test, I created my model from a database consisting of around 80 tables. The problem that I'm running into is that the cost of the very first query I run on a thread is very expensive. If I run without pre-compiling views the first query takes anywhere from 5800 to 6600 milliseconds. If I pre-compile the views (see this article) I can get the initial query cost down to about 2800 to 3200 milliseconds. 3 seconds for each request is still unacceptable for my needs. Subsequent queries are very fast. Can you please help me understand how to eliminate the poor performance of the initial query? I'm using the version of entity framework that ships with Visual Studio 2010 RC.

  Read the article

• Attach data to Richtext using flex, mysql and php(newbie)

  - by dmschenk

  I'm trying to attach data to a richtext field in Flashbuilder. The data is an html string in a mysql database and I'm connecting using php. The php script is just converting to XML. The connection works because I can easily dump the data to a datagrid and I can see the string. when I try to hook the data to a Richtext field I get "object CallResponder" so I am connected, but I'm not sure how to break it down so that it is just an html string for the text field. Thanks protected function creationCompleteHandler(event:FlexEvent):void { getAllAbout_fxResult.token = aboutfxService.getAllAbout_fx(); } <s:RichText x="10" y="10" text="{getAllAbout_fxResult}" creationComplete="creationCompleteHandler(event)" width="300" height="300"/>

  Read the article

• Rails - how can I query the db w/o touching the sessions table

  - by sa125

  Hi - I'm trying to provide a HTTP api to my app that queries a db that's read-only (for replication purposes). I find that my app crashes repeatedly when making a request b/c the call is trying to update the sessions table whenever I query the db. This doesn't happen when I return some text without hitting the database for info. class APIController < AplicationController def view data = Product.find(params[:id]).to_json # will fail data = { :one => 1, :two => 2 }.to_json # will succeed respond_to do |format| format.html { render :json => data } end end end How do I restrict it from touching the sessions table on this request (it's currently issuing an UPDATE on the updated_at field for that session). thanks.

  Read the article

• What does a modern, standard Microsoft-based technology stack look like?

  - by Sean Owen

  Let's say I asked Microsoft to describe the perfect, modern, Microsoft-based technology stack to power a standard e-commerce web site, which perhaps has a simple 2-tier web/database architecture. What would it be like? Yes, I'm just looking for a list of product / technology names. For example, in the J2EE world, I might describe a stack that includes: J2EE 6 standard JavaServer Faces Glassfish 3 MySQL 5.1.x I'm guessing this stack includes some combination of .NET, SQL Server, ASP.NET, IIS, etc. but I am not familiar with this world. Looking for ideas on the equivalent in Microsoft-land.

  Read the article

• PHP script to replace cgi script

  - by Bridgeyman

  Hey, I have a CGI script that uses an old database driver that is no longer supported. Instead of struggling with this old cgi script, I thought it would be easier to rewrite it in php. It works now as a php script, but I need it to be served from the same web address. When a user accesses http://somesite.com/myscript.cgi, I want it to run the php script. I tried just renaming the php script with .cgi, but that didn't work. This is on an Apache server hosted by Dreamhost. Any advice? Bridger Maxwell

  Read the article

• ASP.NET MVC 2.0 Client-Side Validation HOWTO

  - by AlexWalker

  Where can I find some good information on the new client-side validation functionality included in ASP.NET MVC v2? I'd like to find information about using the client-side validation JavaScript without using DataAnnotations, and I'd like to find out how custom validations are handled. For example, if I want to validate two fields together, how would I utilize the provided JavaScript? Or if I wanted to write validation code on the server-side that queried a database, how could I use the provided JavaScript to implement a similar validation? I don't see any books on MVC2 yet, and the blog entries I've found are not detailed enough.

  Read the article

• sql server 2008 express one row write problem

  - by bojanskr

  Hi everyone, I have the most bizarre problem(at least it is bizarre to me) with MSSQL Server Express 2008. The problem is the following: On the development machine I use MS SQL Server 2008 Enterprise....I get some data from a WCF service and write that data to the db (simple as it can be)....I should point out however that the writing, it is done in a separate thread. BUt, anyway no problems during development...all the data is there. Then I set everything up(connection strings .\SQLEXPRESS, other settings) build in Release and copy that to a test machine that has MS SQL Server Express installed(because my application is a client application and it should work with Express)...I run the program....the program retrieves the data from the service...and when I look at the database...I'm in for a big suprise...there's only one row written(the first row received from the WCF service). I would really appreciate any help...I'm in a deadlock here. Thanks in advance. Bojan

  Read the article

• Can one .PHP file edit another?

  - by Ole Jak

  So I have a file for constants. I want to let user define them and then edit my .php filr with that global constants (not xml - real PHP file ) With such code for example <?php // Database Constants define("DB_SERVER", "localhost"); define("DB_USER", "root"); define("DB_PASS", "000000"); define("DB_NAME", "cms"); ?> How to edit this .php file from another PHP file? Is it possible? Btw in future I want to implement not only constants redefining but some smart code that will be able to modify itself.

  Read the article

• solution on SP and EF & Ria Service

  - by KentZhou

  As EF 4.0 released, more support to SQL server Stored procedure. Complex Type can be generated automatically for result dataset of SP. But complex type not support by Ria Service. When I try to use ria service combined with EF 4.0, I want to get dataset by SP. This result is not mapped to any entity/table. Some sulutions suggested by community are: 1. Create view to map sp result. (but for EF, if there is no ID or primary, can't be map to any entity) 2. Create Entity to map sp result.(for this, you even need to map SP for CRUD even though I don't need CUD on this sp result) Also above solution can't be automated. As Database objects maybe changed with the time, auto update edm will lost above solution. So what's the solution? I want to put data operation back to DB as possible, so that many changes can be done in DB and no need to rebuild .net assemblies(this cause redeploy).

  Read the article

• [three20] dynamically add Items to TTLauncher

  - by choise

  Hi guys, in my app i got a TTLauncher Object with some TTLauncherItems in it. Now i want to add some Items dynamically inside my App by pressing a button. Is there a simple way to do that or do i have to create my own methods? In the original facebook application there is already something like that implemented. (You can add your Friends to the Launcher) If not, what would be the best thing to do something like that? Store all "extra items" in a plist oder even in a database and query them, each time TTLauncher object is initialized? Thanks for help :)

  Read the article

• How do i convert hdb file? ... believed to be from act! source

  - by Wardy

  Any ideas ? I think the original source was a goldmine database, looking around it appears that the file was likely built using an application called ACT which I gather is a huge product I don't really want to be deploying for a one off file total size less than 5 meg. So ... Anyone know of a simple tool that I can run this file through to convert it to a standard CSV or something? It does appear to be (when looking at it in notepad and excel) in some sort of csv type format but it's like the data is encrypted somehow.

  Read the article

• Python Framework for small website

  - by mvid

  I am planning a small, simple website to showcase myself as an engineer. My preferred language is Python and I hope to use it to create my website. My pages will be mostly static, with some database stored posts/links. The site will be simple, but I would like to have freedom in how it operates. I plan on using CSS/JS for the design, so I really just need an easy way to throw a small amount of content around. Some frameworks I have come across: Flask cherry.py Pinax Are there any suggestions? Does anyone have any experience with Python on small/hobby websites?

  Read the article

• rails using jruby 1.5 - slow!!

  - by gucki

  Hi! I'm currently using passenger with ree 1.8.7 in production for a rails 2.3.5 project using postgresql as a database. ab -n 10000 -c 100: 285.69 [#/sec] (mean) I read jruby should be the fastest solution, so I installed jruby-1.5.0.rc2 together with jdbc postgres adapter and glassfish. As the performance is really poor, I also started running my application using "jruby --server -J-Druby.jit.threshold=0 script/server -e production". Anyway, I only get ab -n 10000 -c 100: 43.88 [#/sec] (mean) Thread_safe! is activated in my rails config. Java seems to use all cores, cpu usage is around 350% (top). ruby -v: jruby 1.5.0.RC2 (ruby 1.8.7 patchlevel 249) (2010-04-28 7c245f3) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_16) [amd64-java] I wonder what I'm doing wrong and how to get better performancre with jruby than with ree? Thanks, Corin

  Read the article

• How do I delete a foreign key in SQLAlchemy?

  - by Travis

  I'm using SQLAlchemy Migrate to keep track of database changes and I'm running into an issue with removing a foreign key. I have two tables, t_new is a new table, and t_exists is an existing table. I need to add t_new, then add a foreign key to t_exists. Then I need to be able to reverse the operation (which is where I'm having trouble). t_new = sa.Table("new", meta.metadata, sa.Column("new_id", sa.types.Integer, primary_key=True) ) t_exists = sa.Table("exists", meta.metadata, sa.Column("exists_id", sa.types.Integer, primary_key=True), sa.Column( "new_id", sa.types.Integer, sa.ForeignKey("new.new_id", onupdate="CASCADE", ondelete="CASCADE"), nullable=False ) ) This works fine: t_new.create() t_exists.c.new_id.create() But this does not: t_exists.c.new_id.drop() t_new.drop() Trying to drop the foreign key column gives an error: 1025, "Error on rename of '.\my_db_name\#sql-1b0_2e6' to '.\my_db_name\exists' (errno: 150)" If I do this with raw SQL, i can remove the foreign key manually then remove the column, but I haven't been able to figure out how to remove the foreign key with SQLAlchemy? How can I remove the foreign key, and then the column?

  Read the article

• How does Alpha Five Version 10 Rate for Web App Development

  - by Gary B2312321321

  I came across this RDMS via the advert on stackoverflow. Seems to be in the vein of MS Access / Filemaker / Apex database development tools but focused on web based applications. It quotes rave reviews from EWeek and a favourable mention from Dr Dobbs regarding its ability to create AJAX web applications without coding. The Eweek review, apparently written by an ASP.NET programmer, goes on to proclaim the ease at which apps can be extended using the inbuilt XBasic language and how custom javascript can easily be added without wading through code. Has anyone here built a web app with Alpha 5? Does anyone have comments on the development process, the speed of it or limitations they encountered along the way? To me it seems Oracle APEX comes closest to the feature set, has anyone programmed in both and have any comments?

  Read the article

• Verbose Listing of All Application Layers/Tiers?

  - by leeand00

  I've looked at a few sites now, and I'm still struggling to find a complete listing of all the possible layers/tiers you can have in an application. From back in college (1999) I remember the following: Presentation Layer (Views) Application Layer (Controllers) Business Logic Layer (API/Rules) Persistence Layer (Database/Object Persistence/Model) I'm not advocating that they all be used...especially when you consider that too many layers/tiers could lead to an increase in complexity...I just wondered what the complete list might look like... Based on a couple of blogs I've found several different answers...and Javascript and client side technologies seem to have leaked in adding more client-side layers according to one blog the client side tier might even consist of Behavior Layer (Javascript, Flash) Presentation Layer (CSS/Images) Note: I though the entire client side layer was the presentation layer Structure Layer (XHTML, HTML) I'm just trying to get an abstract idea of what all the possible layers might be, (even though some people call them different things)

  Read the article

< Previous Page | 903 904 905 906 907 908 909 910 911 912 913 914  | Next Page >