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  • What is the structure of a (Data Access) Service Class

    - by jiewmeng
    I learnt that I should be using service classes to persist entities into the database instead of putting such logic in models/controllers. I currently made my service class something like class Application_DAO_User { protected $user; public function __construct(User $user) { $this->user = $user } public function edit($name, ...) { $this->user->name = $name; ... $this->em->flush(); } } I wonder if this should be the structure of a service class? where a service object represents a entity/model? Or maybe I should pass a User object everytime I want to do a edit like public static function edit($user, $name) { $user->name = $name; $this->em->flush(); } I am using Doctrine 2 & Zend Framework, but it shouldn't matter

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  • MS Access 2003 - VBA for altering a table after a "SELECT * INTO tblTemp FROM tblMain" statement

    - by Justin
    Hi. I use functions like the following to make temporary tables out of crosstabs queries. Function SQL_Tester() Dim sql As String If DCount("*", "MSysObjects", "[Name]='tblTemp'") Then DoCmd.DeleteObject acTable, "tblTemp" End If sql = "SELECT * INTO tblTemp from TblMain;" Debug.Print (sql) Set db = CurrentDb db.Execute (sql) End Function I do this so that I can then use more vba to take the temporary table to excel, use some of excel functionality (formulas and such) and then return the values to the original table (tblMain). Simple spot i am getting tripped up is that after the Select INTO statement I need to add a brand new additional column to that temporary table and I do not know how to do this: sql = "Create Table..." is like the only way i know how to do this and of course this doesn't work to well with the above approach because I can't create a table that has already been created after the fact, and I cannot create it before because the SELECT INTO statement approach will return a "table already exists" message. Any help? thanks guys!

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  • My MS Access control displays no text for appended items following an append query

    - by Zaid
    The control in question is part of a datasheet-style subform that feeds off a multi-field combo-box. The control is bound to the first field of the combo box, an ID field which is hidden from view (column width set to zero). Consequently, the second field (Code) is displayed in the control when an item is selected from the combo box. I'm using a form button action to append values to this datasheet. It seems that because I need to INSERT ID values in, the control is unable to display the corresponding Code value. Nothing is visible, unless I go manually into the combo box and select an item from it. How can I get the control to display the Code value?

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  • iPhone SDK / Core Data usage scenario, similar to GAE data store?

    - by boliva
    Hi all, I am currently rewriting a map based App which I wrote in the past, specifically for 2.2.1 devices. Originally I wrote it to make use of SQLite databases but I would like to try and migrate it over Core Data, now that it's available on 3.X (for which I am rewriting to). I am fairly experienced in iPhone/Obj-C development, SQL and server backend technologies, but I have never had the chance to work with Core Data so IDK really if it's the appropiate tool for what I am trying to accomplish. The App works on a limited area in a map over which there are about 4000 placemarks, with different kinds of icons and sizes. Of course not all 4000 placemarks are shown at once but only those currently visible in the map viewport, and depending on the zoom level. What I am doing right now is, after the user moves the map in any way (panning or zooming) I am requesting from the backend server the required information for the placemarks that would be visible given the viewport coordinates boundaries and zoom level, however the process isn't as smooth as I'd like (the backend is sending its response in XML and I am compressing it using gzip), it takes anywhere from 1 to 3 seconds to update the display of the placemarks after the user ends moving the map. What I would like to do is to prefetch all the placemarks data at the App launch and use it all through the app life time - I don't mind storing it for later use because the data should be dynamic. The way I would do it right now is, after retrieving all the data, to store it on an SQLite db which I would query later, whenever the user moves the map, to return only the placemarks inside the viewport coordinate boundaries and specific to a given zoom level. Now, the question itself is, if is it possible to use some more 'native', object driven way to carry this queries process, which got me thinking about Core Data and if it is in any way similar to what Google App Engine offers through its datastore where you can fetch a number of objects from the backend given a certain query or criteria, without resorting to an SQL query itself. Like I said before I don't have any experience on Core Data but I have a pretty deep understanding of Obj-C and iPhone development, as well as SQL databases. Any guides on how to achieve what I'm trying (if possible at all) would be greatly appreciated.

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  • Bang Notation and Dot Notation in VBA and MS-Access

    - by Nitrodist
    While perusing an application that I'm documenting, I've run across some examples of bang notation in accessing object properties/methods, etc. and in other places they use dot notation for what seems like the same purpose. Is there a difference or preference to using one or the other? Some simple googling only reveals limited information on the subject with some people actually using it in opposite cases. Perhaps there is a coding standards section from MS somewhere that indicates the method of madness?

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  • Classifying captured data in unknown format?

    - by monch1962
    I've got a large set of captured data (potentially hundreds of thousands of records), and I need to be able to break it down so I can both classify it and also produce "typical" data myself. Let me explain further... If I have the following strings of data: 132T339G1P112S 164T897F5A498S 144T989B9B223T 155T928X9Z554T ... you might start to infer the following: possibly all strings are 14 characters long the 4th, 8th, 10th and 14th characters may always be alphas, while the rest are numeric the first character may always be a '1' the 4th character may always be the letter 'T' the 14th character may be limited to only being 'S' or 'T' and so on... As you get more and more samples of real data, some of these "rules" might disappear; if you see a 15 character long string, then you have evidence that the 1st "rule" is incorrect. However, given a sufficiently large sample of strings that are exactly 14 characters long, you can start to assume that "all strings are 14 characters long" and assign a numeric figure to your degree of confidence (with an appropriate set of assumptions around the fact that you're seeing a suitably random set of all possible captured data). As you can probably tell, a human can do a lot of this classification by eye, but I'm not aware of libraries or algorithms that would allow a computer to do it. Given a set of captured data (significantly more complex than the above...), are there libraries that I can apply in my code to do this sort of classification for me, that will identify "rules" with a given degree of confidence? As a next step, I need to be able to take those rules, and use them to create my own data that conforms to these rules. I assume this is a significantly easier step than the classification, but I've never had to perform a task like this before so I'm really not sure how complex it is. At a guess, Python or Java (or possibly Perl or R) are possibly the "common" languages most likely to have these sorts of libraries, and maybe some of the bioinformatic libraries do this sort of thing. I really don't care which language I have to use; I need to solve the problem in whatever way I can. Any sort of pointer to information would be very useful. As you can probably tell, I'm struggling to describe this problem clearly, and there may be a set of appropriate keywords I can plug into Google that will point me towards the solution. Thanks in advance

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  • transactions in MS Access

    - by arcticpenguin
    Let's say I have the following code in a form that is triggered on some click event. DoCmd.SetWarnings False DoCmd.OpenQuery "AddSomeStuff" DoCmd.OpenQuery "UpdateSomeOtherStuff" DoCmd.OpenQuery "DeleteABunchOfCrap" DoCmd.SetWarnings True Can I assume that the three update queries I executed (in SQL Server) are not transactional in that they are run is separate transactions?

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  • MS Access Force report footer to bottom of page

    - by LanguaFlash
    I am trying to make a report for a proposal. I would like to keep a professional look and always force the terms section to the bottom of the page. I could use the page footer but I only want the terms to show on the last page. My idea is somehow with VBA to set the height of a dummy group such that it forces the report footer to the bottom. The problem is that you can't explicitly set the height of a section. Anyone else out there with another idea (That works)? :-) Thanks, Jeff

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  • Query Access and VB.NET

    - by yae
    Hi all: I have 2 tables: "products" and "pieces" PRODUCTS idProd product price PIECES id idProdMain idProdChild quant idProdMain and idProdChild are vinculated with the table: "products". Other considerations is that 1 product can have some pieces and 1 product can be a piece. Price product equal a sum of quantity * price of all their pieces. EXAMPLE: TABLE PRODUCTS (idProd - product - price) 1 - Computer - 300€ 2 - Hard Disk - 100€ 3 - Memory - 50€ 4 - Main Board - 100€ 5 - Software - 50€ 6 - CDroms 100 un. - 30€ TABLE PIECES (id - idProdMain - idProdChild - Quant.) 1 - 1 - 2 - 1 2 - 1 - 3 - 2 3 - 1 - 4 - 1 WHAT I NEED? I need update the price of the main product when the price of the product child (piece) is changed. Following the previous example, if I change the price of this product "memory" (is a piece too) to 60€, then product "Computer" will must change his price to 320€ How I can do it using queries? Already I have tried this to obatin the price of the main product, but not runs. This query not returns any value SELECT Sum(products.price*pieces.quant) AS Expr1 FROM products LEFT JOIN pieces ON (products.idProd = pieces.idProdChild) AND (products.idProd = pieces.idProdChild) AND (products.idProd = pieces.idProdMain) WHERE (((pieces.idProdMain)=5));

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  • MS ACCESS: How can i count distinct value using access query?

    - by Sadat
    here is the current complex query given below. SELECT DISTINCT Evaluation.ETCode, Training.TTitle, Training.Tcomponent, Training.TImpliment_Partner, Training.TVenue, Training.TStartDate, Training.TEndDate, Evaluation.EDate, Answer.QCode, Answer.Answer, Count(Answer.Answer) AS [Count], Questions.SL, Questions.Question FROM ((Evaluation INNER JOIN Training ON Evaluation.ETCode=Training.TCode) INNER JOIN Answer ON Evaluation.ECode=Answer.ECode) INNER JOIN Questions ON Answer.QCode=Questions.QCode GROUP BY Evaluation.ETCode, Answer.QCode, Training.TTitle, Training.Tcomponent, Training.TImpliment_Partner, Training.Tvenue, Answer.Answer, Questions.Question, Training.TStartDate, Training.TEndDate, Evaluation.EDate, Questions.SL ORDER BY Answer.QCode, Answer.Answer; There is an another column Training.TCode. I need to count distinct Training.TCode, can anybody help me? If you need more information please let me know

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  • Linking indivuidal queries in a unbound listbox in ACCESS 2007

    - by Jeremy
    I have created a unbound listbox. I have the box showing a list of queries i want the use to be able to select. My problem is I don't understand how to get the submit button to select the currently selected query and run it. So how do I link the submit button to the listbox and have each item in the box submit it's own query.

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  • Help Me With This Access Query

    - by yae
    I have 2 tables: "products" and "pieces" PRODUCTS idProd product price PIECES id idProdMain idProdChild quant idProdMain and idProdChild are related with the table: "products". Other considerations is that 1 product can have some pieces and 1 product can be a piece. Price product equal a sum of quantity * price of all their pieces. "Products" table contains all products (p EXAMPLE: TABLE PRODUCTS (idProd - product - price) 1 - Computer - 300€ 2 - Hard Disk - 100€ 3 - Memory - 50€ 4 - Main Board - 100€ 5 - Software - 50€ 6 - CDroms 100 un. - 30€ TABLE PIECES (id - idProdMain - idProdChild - Quant.) 1 - 1 - 2 - 1 2 - 1 - 3 - 2 3 - 1 - 4 - 1 WHAT I NEED? I need update the price of the main product when the price of the product child (piece) is changed. Following the previous example, if I change the price of this product "memory" (is a piece too) to 60€, then product "Computer" will must change his price to 320€ How I can do it using queries? Already I have tried this to obatin the price of the main product, but not runs. This query not returns any value: SELECT Sum(products.price*pieces.quant) AS Expr1 FROM products LEFT JOIN pieces ON (products.idProd = pieces.idProdChild) AND (products.idProd = pieces.idProdChild) AND (products.idProd = pieces.idProdMain) WHERE (((pieces.idProdMain)=5)); MORE INFO The table "products" contains all the products to sell that it is in the shop. The table "pieces" is to take a control of the compound products. To know those who are the products children. For example of compound product: computers. This product is composed by other products (motherboard, hard disk, memory, cpu, etc.)

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  • Copying a field to another table in Access

    - by Jacques Tardie
    I'm a bit embarassed asking this here, but here goes: I've got two tables, which you can see here: http://img411.imageshack.us/img411/4562/query.jpg I need to copy the effortid from the one table into the other, making sure that the values still maintain the correction relationships. The primary key for each is a combination of loggerid & datetime. What's the best way to do this? Thanks in advance, and don't make fun :)

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  • access: print report question

    - by I__
    here's the design view of my report: how do i force it to print only one set of these per page, because currently it is printing like this: i want it it print only one set of these controls per page

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  • Linking individual queries in a unbound listbox in ACCESS 2007

    - by Jeremy
    I have created a unbound listbox. I have the box showing a list of queries I want the use to be able to select. My problem is I don't understand how to get the submit button to select the currently selected query and run it. So how do I link the submit button to the listbox and have each item in the box submit its own query.

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  • Importing/Exporting Relationships in MS Access

    - by lamcro
    I have a couple of mdb files with the exact table structure. I have to change the primary key of the main table from autonumber to number in all of them, which means I have to: Drop the all the relationships the main table has Change the main table Create the relationships again,... for all the tables. Is there any way to export the relationships from one file and importing them to all the rest? I am sure this can be done with some macro/vb code. Does anyone has an example I could use? Thanks.

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  • MS-ACCESS query to match first few characters in string comparision

    - by neobee
    What query is suitable to compare two tables specied below, however only part of string in location(table1) will matches with the Location(table2). Location(table1) Location(table2) india- north USxcs India-west Indiaasd India- east Indiaavvds India- south Africassdcasv US- north Africavasvdsa us-west UKsacvavsdv uk- east Indiacascsa uk- south UScssca Africa-middle Indiacsasca Africa-south Africaccc Africa-east UKcac only 1st two characters of location(table1) and 1st two characters of location(table2) should match. Please help only any four characters of location(table1)and any two characters of location(table2)should match.

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  • Efficient data structure for fast random access, search, insertion and deletion

    - by Leonel
    I'm looking for a data structure (or structures) that would allow me keep me an ordered list of integers, no duplicates, with indexes and values in the same range. I need four main operations to be efficient, in rough order of importance: taking the value from a given index finding the index of a given value inserting a value at a given index deleting a value at a given index Using an array I have 1 at O(1), but 2 is O(N) and insertion and deletions are expensive (O(N) as well, I believe). A Linked List has O(1) insertion and deletion (once you have the node), but 1 and 2 are O(N) thus negating the gains. I tried keeping two arrays a[index]=value and b[value]=index, which turn 1 and 2 into O(1) but turn 3 and 4 into even more costly operations. Is there a data structure better suited for this?

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  • Access violation exception from Delphi's Supports -> QueryInterface

    - by Sharon
    Hi, I have the following piece of code: for i := 0 to FControlList.Count - 1 do if Supports(IMyControl(FControlList[i]), IMyControlEx) then begin MyControlEx := IMyControl(FControlList[i]) as IMyControlEx; MyControlEx.DoYourMagic(Self, SomeData); end; This code is called many times during my application execution, but in some specific cases it fails inside the Supports() method. And more specifically - it seems to fall inside the QueryInterface() call within the Supports() method. I checked that FControlList is not nil and FControlList[i] is not nil and it still happens. Any idea will be appreciated!!!

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  • Access: strange results with queries against MDB file

    - by Craig Johnston
    I am running the following SQL against an MDB file, a copy of which is located here: http://hotfile.com/dl/40641614/2353dfc/test.mdb.html (perfectly clean file, no macros or viruses) SELECT datediff("d", MAX(invoice.date), Now) As Date_Diff , MAX(invoice.date) AS max_invoice_date , customer.number AS customer_number FROM invoice INNER JOIN customer ON invoice.customer_number = customer.number GROUP BY customer.number If the the following was added: HAVING datediff("d", MAX(invoice.date), Now) > 365 would this simply exclude rows with Date_Diff <= 365? What should be the effect of the HAVING clause here?

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  • Invoices for Printing in MS-Access

    - by Nitrodist
    The application that I'm currently working on has a funky set up for the invoices that they print. The form is the invoice that is printed out. I took a look at the Northwind DB and what it does is and it actually generates a report based on the record's information. What are the limitations of using Forms vs. Reports for printing out reports? One of the limitations that I've run into so far is that the printed page is jam packed with information (all required) to fit on a single page, yet there is lots of wasted space for some stuff since elements on the page don't shrink or grow due to what's inputted into the textboxes. How are invoices designed for your applications? How do you handle space restraints for creating invoices?

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