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  • [Repost-ish] Impossibly slow queries, Tables indexed, How can I speed it up?

    - by colorfulgrayscale
    Hi guys, I posted a little earlier on here at http://stackoverflow.com/questions/2656837/query-results-taking-too-long-on-200k-database-speed-up-tips asking about slow executing SQL queries. I was told to index the columns; I did. and its still slow (slow as in, i never see the results, both mysql and sqlite freeze up on query). Help would be greatly appreciated. Here is the SQL SELECT equipment.`unitID` AS `equipment_unitID`, equipment.`fleetCode` AS `equipment_fleetCode`, equipment.type AS equipment_type, equipment.tiremap AS equipment_tiremap, tiremap.`TireID` AS `tiremap_TireID`, tiremap.`WorkMap` AS `tiremap_WorkMap`, tiremap.`Position` AS `tiremap_Position`, tiremap.`DepthMap` AS `tiremap_DepthMap`, tiremap.timestamp AS tiremap_timestamp, workreference.`aMap` AS `workreference_aMap`, workreference.`bMap` AS `workreference_bMap`, tirework.`RO` AS `tirework_RO`, tirework.location AS tirework_location, tirework.mileage AS tirework_mileage, tirework.`mechanicCode` AS `tirework_mechanicCode`, tirework.`partNumber` AS `tirework_partNumber`, tirework.`historyID` AS `tirework_historyID`, tirework.workmap AS tirework_workmap, tirework.timestamp AS tirework_timestamp FROM equipment, tiremap, workreference, tirework WHERE equipment.tiremap = tiremap.`TireID` AND tiremap.`WorkMap` = workreference.`aMap` AND workreference.`bMap` = tirework.workmap LIMIT 5 and here is the EXPLAIN for it id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE equipment ALL tiremap 14079 1 SIMPLE tiremap ref PRIMARY,WorkMap,TireID,WorkMap_2 PRIMARY 52 tire.equipment.tiremap 3 1 SIMPLE workreference ref aMap,bMap aMap 52 tire.tiremap.WorkMap 1 1 SIMPLE tirework eq_ref NewIndex1 NewIndex1 52 tire.workreference.bMap 1

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  • Alternative to array_shift function

    - by SoLoGHoST
    Ok, I need keys to be preserved within this array and I just want to shift the 1st element from this array. Actually I know that the first key of this array will always be 1 when I do this: // Sort it by 1st group and 1st layout. ksort($disabled_sections); foreach($disabled_sections as &$grouplayout) ksort($grouplayout); Basically I'd rather not have to ksort it in order to grab this array where the key = 1. And, honestly, I'm not a big fan of array_shift, it just takes to long IMO. Is there another way. Perhaps a way to extract the entire array where $disabled_sections[1] is found without having to do a foreach and sorting it, and array_shift. I just wanna add $disabled[1] to a different array and remove it from this array altogether. While keeping both arrays keys structured the way they are. Technically, it would even be fine to do this: $array = array(); $array = $disabled_sections[1]; But it needs to remove it from $disabled_sections. Can I use something like this approach... $array = array(); $array = $disabled_sections[1]; $disabled_sections -= $disabled_sections[1]; Is something like the above even possible?? Thanks.

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  • Jquery .html() function returns html out of nested order

    - by forcripesake
    I have a method which returns a persisted html template from a database. The template is of the format: <div id="item_collection"> <div id="item_x"> <p id="item_x_headline"><h2>Some Headline</h2></p> <p id="item_x_excerpt>Some text here</p> </div> <div id="item_x+1"> <p id="item_x+1_headline"><h1>Some Headline</h1></p> <p id="item_x+1_excerpt>Some text here</p> </div> ...and so on. </div> However after I run the following: alert(data); //check that the template is in order. It Is. $('#template_area').html(data); the Html is now: <div id="item_collection"> <div id="item_x"> <p id="item_x_headline"></p> <!--Note The Lack of Nesting --> <h2>Some Headline</h2> <p id="item_x_excerpt>Some text here</p> </div> <div id="item_x+1"> <p id="item_x+1_headline"></p> <!--Note The Lack of Nesting --> <h1>Some Headline</h1> <p id="item_x+1_excerpt>Some text here</p> </div> ...and so on. </div> So what gives? Is there a better way to replace the empty template_area's content than the .html() method?

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  • ColdFusion 8: Database Connection Reset Error

    - by Gavin
    I have been getting these intermittent ColdFusion Database connection reset errors and was wondering if anyone had experience with this and had a particular solution that worked? Here is the error: Error Executing Database Query.[Macromedia][SQLServer JDBC Driver]A problem occurred when attempting to contact the server (Server returned: Connection reset). Please ensure that the server parameters passed to the driver are correct and that the server is running. Also ensure that the maximum number of connections have not been exceeded for this server. This doesn't happen with any particular query, the code breaks in different queries every time, returning a SQLState error 08s01. These query's logic are fine, no logic errors etc. I checked the network logs and there were no database server connection refusals at the time of the error. Once the first error occurs, it keeps happening for no more than a minute or so at random times of the day, every few days. I've googled this thing and so far anyone that has had this issue was only on CF6 or 7, which the fixes coldFusion put out are only for CF6 or 7. Server configuration wise: The ColdFusion server is version 8 The database server is SQL Server 2005 Standard The database connections allowed setting is set to unlimited on both SQL Server and ColdFusion Any help would be greatly appreciated, Thanks!

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  • Database design for credit based purchases

    - by FreshCode
    I need an elegant way to implement credit-based purchases for an online store with a small variety of products which can be purchased using virtual credit or real currency. Alternatively, products could only be priced in credits. Previous work I have implemented credit-based purchasing before using different product types (eg. Credit, Voucher or Music) with post-order processing to assign purchased credit to users in the form of real currency, which could subsequently be used to discount future orders' charge totals. This worked fairly well as a makeshift solution, but did not succeed in disconnecting the virtual currency from the real currency, which is what I'd like to do, since spending credits is psychologically easier for customers than spending real currency. Design I need guidance on designing the database correctly with support for the simultaneous bulk purchase of credits at a discount along with real currency products. Alternatively, should all products be priced in credits and only credit have a real currency value? Existing Database Design Partial Products table: ProductId Title Type UnitPrice SalePrice Partial Orders table: OrderId UserId (related to Users table, not shown) Status Value Total Partial OrderItems table (similar to CartItems table): OrderItemId OrderId (related to Orders table) ProductId (related to Products table) Quantity UnitPrice SalePrice Prospective UserCredits table: CreditId UserId (related to Users table, not shown) Value (+/- value. Summed over time to determine saldo.) Date I'm using ASP.NET MVC and LINQ-to-SQL on a SQL Server database.

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  • symfony get data from array

    - by iggnition
    Hi, I'm trying to use an SQL query to get data from my database into the template of a symfony project. my query: SQL: SELECT l.loc_id AS l__loc_id, l.naam AS l__naam, l.straat AS l__straat, l.huisnummer AS l__huisnummer, l.plaats AS l__plaats, l.postcode AS l__postcode, l.telefoon AS l__telefoon, l.opmerking AS l__opmerking, o.org_id AS o__org_id, o.naam AS o__naam FROM locatie l LEFT JOIN organisatie o ON l.org_id = o.org_id This is generated by this DQL: DQL: $this->q = Doctrine_Query::create() ->select('l.naam, o.naam, l.straat, l.huisnummer, l.plaats, l.postcode, l.telefoon, l.opmerking') ->from('Locatie l') ->leftJoin('l.Organisatie o') ->execute(); But now when i try to acces this data in the template by either doing: <?php foreach ($q as $locatie): ?> <?php echo $locatie['o.naam'] ?> or <?php foreach ($q as $locatie): ?> <?php echo $locatie['o__naam'] ?> i get the error from symfony: 500 | Internal Server Error | Doctrine_Record_UnknownPropertyException Unknown record property / related component "o__naam" on "Locatie" Does anyone know what is going wrong here? i dont know how to call the value from the array if the names in both query's dont work.

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  • Can't pass a single parameter to lambda function in MVVM Light Toolkit's RelayCommand

    - by Dave
    I don't know if there's a difference between Josh Smith's and Laurent Bugnion's implementations of RelayCommand or not, but everywhere I've looked, it sounds like the Execute portion of RelayCommand can take 0 or 1 parameters. I've only been able to get it to work with 0. When I try something like: public class Test { public RelayCommand MyCommand { get; set; } public Test() { MyCommand = new RelayCommand((param) => SomeFunc(param)); } private void SomeFunc( object param) { } } I get the error: Delegate 'System.Action' does not take '1' arguments. Just to make sure I am not insane, I went to the definition of RelayCommand to make sure I didn't have some rogue implementation in my solution somewhere, but sure enough, it was just Action, and not Action<. What on earth am I missing here?

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  • VSDBCMD deployment for additions to third party databases

    - by Sam
    We have some custom objects (stored procedures etc) in an SQL Server 2005 database belonging to an ERP system. The custom objects are in different schemas to the ERP objects. We're using Database Edition .dbproj projects and vsdbcmd deployment for all our custom application databases and would like to similarly manage our custom objects in the ERP database. It's not clear how this can be done without either: Importing all ERP objects (~4000 tables) into the .dbproj and manually keeping them in sync with ERP development. Visual Studio fell over the only time I tried importing these, so I've no idea whether it can actually handle a project of this size. Somehow excluding the ERP schemas (there are two) from the diff process to ensure they don't get dropped by vsdbcmd. I haven't found any documentation which suggests this is possible. I'm aware of the IgnoreDefaultSchema setting, but there are two schemas I need to ignore and I'm not comfortable with the 'default schema' approach - deployment by different users could be disasterous. Has anyone managed to successfully use .dbproj & vsdbcmd for custom additions to a third party database? If not, how do you manage SQL source control & deployment?

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  • updating changes from one database to another database in the same server

    - by Pavan Kumar
    I have a copy of client database say 'DBCopy' which already contains modified data. The copy of the client database (DBCopy) is attached to the SQL Server where the Central Database (DBCentral) exists. Then I want to update whatever changes already present in DBCopy to DBCentral. Both DBCopy and DBCentral have same schema. How can i do it programatically using C#.NET maybe with a button click. Can you give me an example code as how to do it?. I am using SQL Server 2005 Standard Edition and VS 2008 SP1. In the actual scenario there are about 7 client database all with same schema as the central database. I am bringing copy of each client database and attach it to Central Server where the central database resides and try to update changes present in each copy of the client database to central database one by one programatically using C# .NET . The clients and the central server are physically seperate machines present in different places. They are not interconnected. I need to only update and insert new data. I am not bothered about deletion of data. Thanks and regards Pavan

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  • Success verification of mail() function PHP

    - by Jared
    Hi Is it possible to check if the php can get some kind of a ping/flag back from exchange mail server to say "yes, email has been sent off to the intended recipient"? According to the PHP manual, the return of mail() boolean could mean; "It is important to note that just because the mail was accepted for delivery, it does NOT mean the mail will actually reach the intended destination." Does this mean, PHP can return success but actually there could be a problem on the mail server that php wouldn't know about it? and in this case no email has been sent and the user is none the wiser? TIA Jared

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  • SQLDeveloper using over 100MB of PGA

    - by Leigh Riffel
    Perhaps this is normal, but in my Oracle 11g database I am seeing programmers using Oracle's SQL Developer regularly consume more than 100MB of combined UGA and PGA memory. I'd like to know if this is normal and what can be done about it. Our database is on the 32 bit version of Windows 2008, so memory limitations are becoming an increasing concern. I am using the following query to show the memory usage: SELECT e.SID, e.username, e.status, b.PGA_MEMORY FROM v$session e LEFT JOIN (select y.SID, y.value pga, TO_CHAR(ROUND(y.value/1024/1024),99999999) || ' MB' PGA_MEMORY from v$sesstat y, v$statname z where y.STATISTIC# = z.STATISTIC# and NAME = 'session pga memory') b ON e.sid=b.sid WHERE (PGA)/1024/1024 > 20 ORDER BY 4 DESC; It seems that the resource usage goes up any time a table is opened in SQLDeveloper, but even when it is closed the memory does not go away. The problem is worse if the table is sorted while it was open as that seems to use even more memory. I understand how this would use memory while it is sorting, and perhaps even while it is still open, but to use memory after it is closed seems wrong to me. Can anyone confirm this? Update: I discovered that my numbers were off due to not understanding that the UGA is stored in the PGA under dedicated server mode. This makes the numbers lower than they were, but the problem still remains that SQL Developer seems to use excessive PGA.

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  • multiple polls with email submit function

    - by Chris Mousdale
    I want to add a 4 sets of polls that each have around 4 radio buttons each for answers - then i would like to add an 'enter your email address' field below these polls. Finally I would like the submit button after the email field to 'submit' the data from the polls and the email address entered - so only one submit button. Just to make things even better, I would like some form of validation, that will not pass the form unless all 4 polls have a radio button pressed and a valid email. All this is then to go into a MySQL database. I have the email validation bit nailed - so thats fine.. it's the multiple polls bit thats getting me - I cannot get it to work?! Do i have to effectively add 5 forms? Any help would be greatly appreciated.

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  • The "first past the post election" query problem

    - by MPelletier
    This problem may seem like school work, but it isn't. At best it is self-imposed school work. I encourage any teachers to take is as an example if they wish. "First past the post" elections are single-round, meaning that whoever gets the most votes win, no second rounds. Suppose a table for an election. CREATE TABLE ElectionResults ( DistrictHnd INTEGER NOT NULL, PartyHnd INTEGER NOT NULL, CandidateName VARCHAR2(100) NOT NULL, TotalVotes INTEGER NOT NULL, PRIMARY KEY DistrictHnd, PartyHnd); The table has two foreign keys: DistrictHnd points to a District table (lists all the different electoral districts) and PartyHnd points to a Party table (lists all the different political parties). I won't bother with other tables here, joining them is trivial. This is just a wee bit of context. The question: What SQL query will return a table listing the DistrictHnd, PartyHnd, CandidateName and TotalVotes of the winners (max votes) in each District? This does not suppose any particular database system. If you wish to stick to a particular implementation of SQL, go the way of SQLite and MySQL. If you can devise a better schema (or an easier one), that is acceptable too. Criteria: simplicity, portability to other databases.

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  • Fatal error: Call to undefined function msg_get_queue()

    - by dan.codes
    I am trying to run a script on my local machine, I am on MAC OSX leopard. I have PHP 5.2.x installed and Apache2. I am trying to test this script but I keep getting this error. I googled around a little and saw something where it said it might only be available on linux/unix machines but I find that hard to believe.

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  • Force Oracle error on fetch

    - by Dan
    I am trying to debug a strange behavior in my application. In order to do so, I need to reproduce a scenario where an SQL SELECT query will throw an error, but only while actually fetching from the cursor, not while executing the query itself. Can this be done? Any error will do, but ORA-01722: invalid number seems like the obvious one to try. I created a table with the follwing: KEYCOL INTEGER PRIMARY KEY OTHERCOL VARCHAR2(100) I then created a few hundred rows with unique values for the primary key and the value l for the othercol. I then ran a SELECT * query, picked a row somewhere in the middle, and updated it to the string abcd. I ran the query SELECT KEYCOL, TO_NUMBER(OTHERCOL) FROM SOMETABLE hoping to get some rows of good data an then an error later. But I keep getting ORA-01722: invalid number on the execute step itself. I have gotten this behavior programmatically using ADO (with server-side cursor) and JDBC, as well as from PL/SQL Developer. How can I get the result I'm looking for? thanks Edit - meant to add, when using ADO, I am only calling Command.Execute. I am not creating or opening a Recordset.

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  • how to queue function behind ajax request

    - by user1052335
    What I'm asking is conceptual rather than why my code doesn't work. I'm trying to make a web app that displays content fetched from a database in a sequence, one at a time, and then waits for a response from the user before continuing to the next one. I'm working with javascript on the client side with the JQuery library and php on the server side. In theory, there's time while waiting for the user's input to fetch information from the server using an AJAX request and have it ready for the use by the time he clicks the button, but there's also a chance that such an AJAX request hasn't completed when he clicks the button. So I need something like pseudocode: display current information fetch next data point from the server in the background onUserInput { if ( ajax request complete) { present the information fetched in this request } else if (ajax request not complete) { wait for ajax request complete present information to user } My question is this: how does one implement this " else if (ajax request not complete) { wait for ajax request complete " part. I'm currently using JQuery for my AJAX needs. I'm somewhat new to working with AJAX, and I did search around, but I didn't find anything that seemed on point. I don't know what tools I should use for this. Some kind of queue maybe? I don't need to be spoon fed. I just need to know how this is done, using what tools or if my desired outcome would be accomplished in some other way entirely. Thanks.

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  • Why I am not able to update the column based on a condition which is not the primary key

    - by Gaurav Sharma
    Why I am not able to update the column based on a condition which is not the primary key. I am trying to update the constituencies table where name matches a specific criterial as shown below but the below queries shows an error Error code 1064, SQL state 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'table constituencies set city_id = '1' where constituencies.name = "East Delhi"' at line 1 update table constituencies set city_id = '1' where constituencies.name = "East Delhi"; update table constituencies set city_id = '1' where constituencies.name = "South Delhi"; update table constituencies set city_id = '1' where constituencies.name = "Delhi Sadar"; update table constituencies set city_id = '1' where constituencies.name = "Karol Bagh"; update table constituencies set city_id = '1' where constituencies.name = "New Delhi"; update table constituencies set city_id = '1' where constituencies.name = "Outer Delhi"; update table constituencies set city_id = '1' where constituencies.name = "North East Delhi"; update table constituencies set city_id = '1' where constituencies.name = "North West Delhi"; update table constituencies set city_id = '1' where constituencies.name = "West Delhi"; Is it necessary that the condition should be checked with a primary key only ? Please throw some light on the above.

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  • How to use Common Table Expression and check no duplication in sqlserver

    - by vodkhang
    I have a table references to itself. User table: id, username, managerid and managerid links back to id Now, I want to get all the managers including direct manager, manager of direct manager, so on and so forth... The problem is that I do not want to have a unstop recursive sql. So, I want to check if an id alreay in a list, I will not include it anymore. Here is my sql for that: with --the relation for all the subparts of ozsolar including itself all_managers (id, username, managerid, idlist) as ( --seed that is the ozsola part select u1.id, u1.username, u1.managerid, ' ' from users u1, users u2 where u1.id = u2.managerid and u2.id = 6 UNION ALL select u.id, u.username, u.managerid, idlist + ' ' + u.id from all_managers a, users u where a.managerid = u.id and charindex(cast(u.id as nvarchar(5)), idlist) != 0 ) --select the total number of subparts and group by subpart select id, username from all_managers; The problem is that in this line: select u1.id, u1.username, u1.managerid, ' ' The sqlserver complains with me that I can not put ' ' as the initialized for idlist. nvarchar(40) does not work as well. I do not know how to declare it inside a common table expression like this one. Usually, in db2, I can just put varchar(40)

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  • bad request error 400 while using python requests.post function

    - by Toussah
    I'm trying to make a simple post request via the requests library of Python and I get a bad request error (400) while my url is supposedly correct since I can use it to perform a get. I'm very new in REST requests, I read many tutorials and documentation but I guess there are still things I don't get so my error could be basic. Maybe a lack of understanding on the type of url I'm supposed to send via POST. Here my code : import requests v_username = "username" v_password = "password" v_headers = {'content-type':'application/rdf+xml'} url = 'https://my.url' params = {'param': 'val_param'} payload = {'data': 'my_data'} r = requests.post(url, params = params, auth=(v_username, v_password), data=payload, headers=v_headers, verify=False) print r I used the example of the requests documentation.

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  • Should we have a database independent SQL like query language in Django? [closed]

    - by Yugal Jindle
    Note : I know we have Django ORM already that keeps things database independent and converts to the database specific SQL queries. Once things starts getting complicated it is preferred to write raw SQL queries for better efficiency. When you write raw sql queries your code gets trapped with the database you are using. I also understand its important to use the full power of your database that can-not be achieved with the django orm alone. My Question : Until I use any database specific feature, why should one be trapped with the database. For instance : We have a query with multiple joins and we decided to write a raw sql query. Now, that makes my website postgres specific. Even when I have not used any postgres specific feature. I feel there should be some fake sql language which can translate to any database's sql query. Even Django's ORM can be built over it. So, that if you go out of ORM but not database specific - you can still remain database independent. I asked the same question to Jacob Kaplan Moss (In person) : He advised me to stay with the database that I like and endure its whole power, to which I agree. But my point was not that we should be database independent. My point is we should be database independent until we use a database specific feature. Please explain, why should be there a fake sql layer over the actual sql ?

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  • Full text index requires dropping and recreating - why?

    - by Amjid Qureshi
    Hi all, So I've got a web app running on .net 3.5 connected to a SQL 2005 box. We do scheduled releases every 2 weeks. About 14 tables out of 250 are full text indexed. After not every release, but a few too many, the indexes crap out. They seem to have data in there, but when we try to search them from the front end or SQL enterprise we get timeouts/hangs. We have a script that disables the indexes, drops them, deletes the catalog and then re creates the indexes. This fixes the problem 99 times out of 100. and the one other time, we run the script again and it all works We have tried just rebuilding the fulltext index but that doesn't fix the issue. My question is why do we have to do this ? what can we do to sort the index out? Here is a bit of the script, IF EXISTS (SELECT * FROM sys.fulltext_indexes fti WHERE fti.object_id = OBJECT_ID(N'[dbo].[Address]')) ALTER FULLTEXT INDEX ON [dbo].[Address] DISABLE GO IF EXISTS (SELECT * FROM sys.fulltext_indexes fti WHERE fti.object_id = OBJECT_ID(N'[dbo].[Address]')) DROP FULLTEXT INDEX ON [dbo].[Address] GO IF EXISTS (SELECT * FROM sysfulltextcatalogs ftc WHERE ftc.name = N'DbName.FullTextCatalog') DROP FULLTEXT CATALOG [DbName.FullTextCatalog] GO -- may need this line if we get an error BACKUP LOG SMS2 WITH TRUNCATE_ONLY CREATE FULLTEXT CATALOG [DbName.FullTextCatalog] ON FILEGROUP [FullTextCatalogs] IN PATH N'F:\Data' AS DEFAULT AUTHORIZATION [dbo] CREATE FULLTEXT INDEX ON [Address](CommonPlace LANGUAGE 'ENGLISH') KEY INDEX PK_Address ON [DbName.FullTextCatalog] WITH CHANGE_TRACKING AUTO go

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  • JSON stringify standalone function for JavaScript

    - by karlthorwald
    I know of YUI who has a JSON.stringify utility and also of JSON2 from json.org. What are other good implementations of JSON.stringify? It should also work in IE6, IE7 and not depend on a framework. If it depends on anything this should be easily included all in one file. Edit: I could easily use jquery-json, which was suggested in the comments of the accepted answer. It did what I wanted. (It depends on jquery but that was easily solved)

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  • Handling dependencies with IoC that change within a single function call

    - by Jess
    We are trying to figure out how to setup Dependency Injection for situations where service classes can have different dependencies based on how they are used. In our specific case, we have a web app where 95% of the time the connection string is the same for the entire Request (this is a web application), but sometimes it can change. For example, we might have 2 classes with the following dependencies (simplified version - service actually has 4 dependencies): public LoginService (IUserRepository userRep) { } public UserRepository (IContext dbContext) { } In our IoC container, most of our dependencies are auto-wired except the Context for which I have something like this (not actual code, it's from memory ... this is StructureMap): x.ForRequestedType().Use() .WithCtorArg("connectionString").EqualTo(Session["ConnString"]); For 95% of our web application, this works perfectly. However, we have some admin-type functions that must operate across thousands of databases (one per client). Basically, we'd want to do this: public CreateUserList(IList<string> connStrings) { foreach (connString in connStrings) { //first create dependency graph using new connection string ???? //then call service method on new database _loginService.GetReportDataForAllUsers(); } } My question is: How do we create that new dependency graph for each time through the loop, while maintaining something that can easily be tested?

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