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  • Updating multiple tables with LinqToSql in one unit of work

    - by zsharp
    Table 1: int ID-a(pk) Table 2: int ID-a(pk), int ID-b(pk) Table 3: int ID-b(pk), string C I have the data to insert into Table 1. But I do not have the ID-a, which is autogenerated. I have many string C to insert in Table 3. I am trying to insert row into Table 1, get the ID-a to insert in Table 2 along with the ID-b that is auto-Generated in Table 3 when I submit each string C, all in one submission to db. Right now I am calling dc.SubmitChanges twice in same call. Is it efficient to have to submit changes twice on same DataContext or can this be combined further?

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  • Using Multiple Foreign Keys to the same table in LINQ

    - by Graeme
    I have a table Users and a table Items In the Items table, I have fields such as ModifiedBy CreatedBy AssignedTo which all have a userId integer. The database is set up to have these as foreign keys back to the Users table. When using LINQToSQL, the relationships which are automatically built from the dbml end up giving me names like User, User1 and User2 e.g. myItem.User1.Name or myItem.User2.Name Obviously this isn't very readable and I'd like it be along the lines of myItem.CreatedByUser.Name or myItem.ModifiedByUser.Name etc I could change the names of the relationships but that means I have to redo that every time I change the db schema and refresh the dbml. Is there any way round this?

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  • PDO::ATTR_EMULATE_PREPARES => false

    - by user264058
    I'm new to php and PDO ,so i read this response to a similar post- Does PDO really not use prepared statements with mysql? Yes, by default (at least with version I tested) but native mode can be turned on manually. If not, can it be forced to do so By employing PDO::ATTR_EMULATE_PREPARES setting, the name is pretty self-explanatory. $dbh-setAttribute( PDO::ATTR_EMULATE_PREPARES, false ); should you do that? That's hardest question of them all. Well, I'd say - yes, you should. If you choose PDO as your db driver, there is no point in using it in the emulation mode. by YOUR COMMON SENSE Aren't prepared statements secure from SQL injection, why change if from 'true'-false?? what is native mode??

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  • Sphinx non-fulltext, integer only search

    - by James
    Hello guys, I've got a few tables that literally only hold integers, no "words" and for some reason Sphinx is unable to hold this data in it's library. Just returns "0 bytes" errors for these indexes. Is it possible to do this? If so, how? Below is an example from my Sphinx.conf for one that fails. source track { type = mysql sql_host = host sql_user = user sql_pass = pass sql_db = db sql_port = port sql_query = SELECT id, user, time FROM track; sql_attr_uint = user sql_attr_uint = time sql_query_info = SELECT * FROM track WHERE id=$id } index track { source = track path = /var/lib/sphinx/track docinfo = extern charset_type = utf-8 min_prefix_len = 1 enable_star = 1 }

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  • Login code sample which has been hacked via SQL Injection, although mysql_real_escape_string...

    - by artmania
    Hi friends, I use CodeIgniter, and having trouble with hacking :( is it possible to make SQL Injection to the login code below: function process_login() { $username = mysql_real_escape_string($this->input->post('username')); $password = mysql_real_escape_string(MD5($this->input->post('password'))); //Check user table $query = $this->db->getwhere('users', array('username'=>$username, 'password'=>$password)); if ($query->num_rows() > 0) { // success login data Am I using the mysql_real_escape_string wrong? or what? Appreciate helps!

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  • How do I save user specific data in an asp.net site?

    - by Greg McNulty
    I just set up user profiles using asp.net 3.5 using wvd. For each user I would like to store data that they will be updating every day. For example, every time they go for a run they will update time and distance. I intend to allow them to also look up their history of distance and time from any past date. My question is, what does the database schema usually look like for such a set up? Currently asp.net set up a db for me when I made user profiles. Do I just add an extra table for every user? Should there be one big table with all users data? How do I relate a user I'd to their specific data? Etc.... I have never done this before so any ideas on how this is usually done would be very helpful. Thank you.

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  • How do I protect myself?

    - by ved
    I was poking around at my work computer this evening and was looking at my timesheets. I noticed that all my timesheets had variables in the URLs and I could figure out the numbering scheme for the pages. Then I got a little curious about SQL injection and thought of trying out adding simple SQL injections like "OR 1=1" etc. to see how protected we really were with our timesheet info. One of these strings yielded a friendly error page saying that an error email was sent to the developer. I am concerned that my ID, and request will be seen by the developer , immediately recognized as SQL injection and will be reported to network security officer as a malicious attempt by an employee to hack the timesheet dB. what is my defense? I am really worried.

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  • Implementing auto-save in WPF / MVVM / NHibernate

    - by Echiban
    My client likes programs like Microsoft OneNote where changes are saved automatically, and he can choose to discard when he explicitly wants to do so. I will have to implement some undo functionality, but I'll figure that out some other time. With NHibernate, I suppose I can call ISession.Update on every single property / binding change, but I can see real pain with this approach down the road. I am not a fan of timers, but maybe a 5 second timer that starts on property / binding change and at timer end use BackgroundWorker thread to save to db. What do you think?

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  • How to query a date in HQL (Hibernate) with Joda Time?

    - by fabien7474
    I am sure that someone familiar with HQL (I am myself a newbie) can easily answer this question. In my Grails application, I have the following domain class. class Book { org.joda.time.DateTime releaseDate //I use the PersistentDateTime for persisting via Hibernate (that use a DATETIME type for MySQL DB) } In my HQL query, I want to retrieve books whose release date is included in range date1..date2 For instance I tried: DateTime date1, date2 ... def queryStr = "select * from Book as b where b.releaseDate > $date1 and b.releaseDate < $date2" def res = Book.executeQuery(queryStr) But I got the exception ...caused by: org.springframework.orm.hibernate3.HibernateQueryException: unexpected token: The error token points to date format (for instance 2009-11-27T21:57:18.010+01:00 or Fri Nov 27 22:01:20 CET 2009) I have also tried to convert date1 into a Date class without success So what is the correct HQL code ? Should I convert to a specific format (which one?) using the patternForStyle method or is there another -cleaner- way to do it? Thanks, Fabien.

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  • How do I get a linq to sql group by query into the asp.net mvc view?

    - by Brad Wetli
    Sorry for the newbie question, but I have the following query that groups parking spaces by their garage, but I can't figure out how to iterate the data in the view. I guess I should strongly type the view but am a newbie and having lots of problems figuring this out. Any help would be appreciated. Public Function FindAllSpaces() Implements ISpaceRepository.FindAllSpaces Dim query = _ From s In db.spaces _ Order By s.name Ascending _ Group By s.garageid Into spaces = Group _ Order By garageid Ascending Return query End Function The controller is taking the query object as is and putting it into the viewdata.model and as stated the view is not currently strongly typed as I haven't been able to figure out how to do this. I have run the query successfully in linqpad.

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  • mySQL Left Join on multiple tables

    - by Jarrod
    Hi I'm really struggling with this query. I have 4 tables (http://oberto.co.nz/db-sql.png): Invoice_Payement, Invoice, Client and Calendar. I'm trying to create a report by summing up the 'paid_amount' col, in Invoice_Payment, by month/year. The query needs to include all months, even those with no data There query needs the condition (Invoice table): registered_id = [id] I have tried with the below query, which works, but falls short when 'paid_date' does not have any records for a month. The outcome is that month does not show in the results I added a Calendar table to resolved this but not sure how to left join to it. SELECT MONTHNAME(Invoice_Payments.date_paid) as month, SUM(Invoice_Payments.paid_amount) AS total FROM Invoice, Client, Invoice_Payments WHERE Client.registered_id = 1 AND Client.id = Invoice.client_id And Invoice.id = Invoice_Payments.invoice_id AND date_paid IS NOT NULL GROUP BY YEAR(Invoice_Payments.date_paid), MONTH(Invoice_Payments.date_paid) Please see the above link for a basic ERD diagram of my scenario. Thanks for reading. I've posted this Q before but I think I worded it badly.

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  • Rails - Vestal Versions - Access previous version data w/o restoring?

    - by AnApprentice
    Hello, I'd like to use vestal versions to do the following: Determine the Content of the current record being saved Determine the Content of the last record saved In my model I have: class Note < ActiveRecord::Base versioned :if => :really_create_a_version? def really_create_a_version? XXXXXXXXXXXXXX XXXXXXXXXXXXXX end end Where the XXXX are, how can I get the note.content of the item about to be saved (i'm assuming it hasn't been saved yet to the DB? Is that correct? Also, how can I get the note.content of the save before the current save in progress? Thanks

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  • MongoDB - how to join parent and child products by reference

    - by Jaro
    my mongo collection stores products. There are two product types: child and parent. Parent product holds array of its child as reference. Use case: use mydb; child1 = { _id: 1, name: "Child 1", is_child: true, is_parent: false, children : [] } child2 = { _id: 2, name: "Child 2", is_child: true, is_parent: false, children : [] } parent = { _id: 3, name: "Parent product", is_child: false, is_parent: true, children : [1, 2] } db.product.insert( [child1, child2, parent] ); And I'm looking for any query returning { _id: 3, name: "Parent product", is_child: false, is_parent: true, children: [ { _id: 1, name: "Child 1", is_child: true, is_parent: false, children : [] }, { _id: 2, name: "Child 2", is_child: true, is_parent: false, children : [] } ] } I'm newbie to mongodb, but I guess an usage of map-reduce could solve the problem. Can anyone advice? Thx

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  • How can I update a row and insert a new one automatically in NHibernate with one call to Save?

    - by snicker
    Let's say I have a Type II SCD database, that is basically append only. I am using NHibernate to persist objects to my database. I have an object like so: Pony |- int Id |- Guid EntityId |- string PonyName |- string PonyColor |- int RevisionValidFrom |- int RevisionValidTo Here's a typical scenario: Pony myLittlePony = myStable.GetLatestPonyByGuid("0f1ac08a-3328-43db-b278-77c272e4fea3"); myLittlePony.PonyColor = "Fish"; myNHSession.Save(myLittlePony); I want to be able to call Session.Save(myLittlePony) and have NHibernate UPDATE the old entity's RevisionValidTo to whatever I specify and then INSERT the modified Pony as a new row with a new Id, basically as if it were a brand new object being persisted to the DB.

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  • Problem with ajax and posting non-latin characters

    - by jason
    Posting non-latin based languages with ajax + jquery doesn't save to mysql the correct text. What I have done is this: I am getting multiple translated words from Google's translation api. The ajax request is showing the correct translations for all languages. But when i try and insert this into the db it shows up in php my admin as garbled text I added AddDefaultCharset UTF-8 to .htaccess file on the root. I tried setting the header in php to utf-8 and this did not work. I have tried adding a contentType to ajax setup but this didn't work also. Any suggestions appreciated. jason

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  • Unable to load the Starteam Dump into SVN

    - by ssarivis
    Hi, I have a dump created from StarTeam 2008 R 2 (10.4.7.-64) using svn importer 1.1-M8. But when I am trying to import the dump its giving me error: * adding path : tags/Test/GH/13_Environment/Process/Capgemini EN Template - Business Case.doc ...svnadmin: File already exists: filesystem 'help\db', transaction '2-2', path 'tags/Test/GH/13_Environment/Process/Capgemini EN Template - Business Case.doc' I can see from the svn admin load o/p that the file has been added already. May be the dump created by SVN Importer is not correct. Can anyone guide me how to solve this ?

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  • compile cs files with mono?

    - by acidzombie24
    I am trying to compile my project with mono on linux. My cmd looks something like... gmcs Pages/UserProfile.cs Properties/AssemblyInfo.cs queues.cs watch_editor.cs Class1.cs -define:USE_SQLITE -r:System -r:System.Collections -r:System.Collections.Generic -r:System.Collections.ObjectModel -r:System.Collections.Specialized -r:System.Configuration but much long. and i get the output error CS0006: cannot find metadata file `System.Collections' error CS0006: cannot find metadata file `System.Collections.Generic' error CS0006: cannot find metadata file `System.Collections.ObjectModel' ... How do i solve this? I also tried it the other way around (below) and had the same error msg with .dll at the end of them gmcs -define:USE_SQLITE -r:System.dll -r:System.Collections.dll -r:System.Web.UI.WebControls CommentCenter.cs cookies.cs db.cs Default.aspx.cs

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  • How to edit datagridview using SqlCeDataAdapter?

    - by DanSogaard
    I've a frmEdit with datagridview that's bouned to this: string sqlqry1 = "select p_Name from Items where p_Id=" + p_Id; using (SqlCeDataAdapter a = new SqlCeDataAdapter(sqlqry1, conn)) { DataTable dt1 = new DataTable(); a.Fill(dt1); dataGridView1.DataSource = dt1; } How to edit cells and save them back to the db?, tried using this: using (SqlCeDataAdapter a = new SqlCeDataAdapter(sqlqry1, conn)) { DataTable dt1 = new DataTable(); a.Fill(dt1); dataGridView1.DataSource = dt1; a.Update(dt1); } Nothing. Is there anyway?.

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  • Google app engine or Amazin ec2 for Restful services and direct access to datastore

    - by imran
    I'm thinking of building a Restful app on either App engine or ec2 devloped in Java. I'm interested in opinions/experience of using the two options for this. The primary purpose is to create web services to write and retrieve data through a mobile device...basically creating an API for the service I want to create. It seems to me it would be quicker and cheaper in the beginning to go with google app engine using either restlet or grails.But I also think that I could run into problems in the future when I want to so somthing more advanced and might be restricted by app engines environment. I also want to be able to do data analysis on the data in the datastore as well. It seems that with app engine this would be hard as I don't have direct access to the datastore ( in Amazon I could still have access to the underlying db if I go with MySQL ) .

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  • How do I use a ListProperty(users.user) in a djangoforms.ModelForm on Google AppEngine?

    - by Gabriel
    I have been looking around a bit for info on how to do this. Essentially I have a Model: class SharableUserAsset(db.Model): name = StringProperty() users = ListProperty(users.User) My questions are: What is the best way to associate users to this value where they are not authenticated, visa vi invite from contacts list etc.? Is there a reasonable way to present a list control easily in a djangoforms.ModelForm? Once a user logs in I want to be able to check if that user is in the list for any number of SharableUserAsset class "records", how do I do that? Does user evaluate as a match to an email address or is there a way to look up a valid user against an email address?

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  • create cookie in web method

    - by quantum62
    i have a web method that check user in data base via a jquery-ajax method i wanna if client exists in db i create a cookie in client side with user name but i know that response is not available in staticmethod .how can i create a cookie in a method that call with jquery ajax and must be static. its my code that does not work cuz response is not accesible if (olduser.Trim() == username.Trim() && password.Trim()==oldpass.Trim()) { retval =olduser; HttpContext context = HttpContext.Current; context.Session[retval.ToString()] = retval.ToString(); HttpCookie cook = new HttpCookie("userath"); cook["submituser"] = "undifiend"; Response.Cookies.Add(cook); }

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  • commercial Web application PHP -

    - by bhefny
    Hello, I was thinking of making a commercial application to sell to customers to install on their servers but I wanted to do it with PHP & MySQL. what should i do to ensure that the source code (& Database) will not be opened nor copied. The most important thing is the code will be hosted on the customer server. And also how to ensure that the customer will not resell the web application (like copying the code & Db to other people) Thank you

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  • Returning partial address matches and mismatch position using L2S or SQL

    - by peter3
    I need to implement a method that takes an address split up into individual parts and returns any matching items from an address table. If no matches are found, I want to be able to return a value indicating where it failed. Each input param has a corresponding field in the table. The signature would look something like this: List<Address> MatchAddress(string zipCode, string streetName, string houseNumber, string houseLetter, string floor, string appartmentNo, out int mismatchPosition) { // return matching addresses // if none found, return the position where it stopped matching // zipCode is position 0, appartmentNo is position 5 // // an empty param value indicates "don't check" } I know I can construct the method such that I start with all the parameters, execute the query and then remove param by param (from the right side) until either a match is found or I run out of parameters, but can I construct a query that is more effective than that, i.e minimizing the number of calls to the db, maybe even as a single call?

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  • What is the best way to implement an object cache with Entity Framework?

    - by Harshal
    Say I have a table of "BlogPosts" in a database and i want to be able to cache the ones that were retrieved already in memory, for further reads, I can just use a standard hashtable type memory cache like System.Web.Caching.Cache, but if i then need to update a property on one of these blog posts e.g. blogPost.Title and update the record in DB, i cannot do this without fetching it again from database as the Entity Framework context used to fetch this record when it was loaded into my cache is already disposed? How do I write code so that I am getting an object from my cache, updating one property and just calling the SaveChanges method without incurring an extra read.

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  • Magento Installation stuck at configuration

    - by itsandy
    Hi Everyone, I am not sure what is going wrong when I am trying to install magento to my local ubuntu machine. I did all the steps mentionsed in the magento wiki. Everything goes well until I reach the point where I am here which is the magento config page. When I try and continue after entering the necessary details like host, database name and user name and submit it comes back to the same page. I checked for everything like db in my phomyadmin panel and it still gets stuck there. What is the possible reason for that. Thanks

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