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  • A series of simple Aggregate Root questions (Domain Driven Design)

    - by Robert
    I have a few (hopefully) simple questions about aggregate roots in domain driven design: Is it okay to have an aggregate root as a property of another aggregate root? Is it okay to have a given entity inside two or more aggregate roots? My final question is a bit more involved. I have a website that has a few entities that really belong to a "website" aggregate root. They are 'News', 'Products', and 'Users'. There isn't a 'Website' table in the database, but a 'Website' seems like a good aggregate root for these three entities. How is this usually achieved? Thanks!

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  • E4X in ActionScript

    - by Brian Genisio
    Hey all, Looking at the E4X implementation in ActionScript, it occurs to me that they had to figure out how to do three things that I am not sure can be done within ActionScript regularly: Properties/Getters prefixed with @: var myAttribute = xmlPerson.@name; Nameless functions for filtering: xmlData.person.(/* predicate */) lambda syntax for predicates: xmlData.person.(@name == "Brian") So here is my question: Are these just one-off capabilities (much like Vector.<>) they put in just for E4X, therefore keeping out of reach for us? Or do we, as ActionScript developers, have access to these features? More specifically, I'd love to get access to the expression tree of that lambda predicate for my own code (not tied to the XML classes in any way). I figured out that this is called the "filter operator"... but I am not sure how to harness it. Not sure I can... since ActionScript does not allow for operator overloading :(

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  • Macro to copy data from one sheet to another based on the current date

    - by SgtSnafu
    Does anyone have a macro that copy data from one sheet to another based on the current date? I am working with a single workbook of three sheets. Sheet one will hold the manual input of daily production figures for multiple plants, sheet two is to hold ongoing daily data, keyed on sheet one. The macro will be associated with a button, so that once clicked it would search for every row that has a date of today, and copy that row to the next available blank row on sheet two. Sample Data... Plant 1 Input Date - $ Produced - Labor Hour 3-29-10 - 4538 - 8 3-30-10 - 7862 - 12 3-31-10 4-1-10 4-2-10 Plant 2 Input Date - $ Produced - Labor Hour 3-29-10 - 4545 - 9 3-30-10 - 7645 - 12 3-31-10 4-1-10 4-2-10

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  • How to prevent modal view controllers flashing when changing

    - by KP Overflow
    I have three view controllers, let's call them A, B and C. When a button is pressed on view A, view B is shown using presentModalViewController:animated: When the finish button is pressed on screen B, it dismisses itself. View A is notified whereupon it immediately shows view C, again using presentModalViewController:animated: The problem is that view A's content is momentarily flashed on the screen between view B closing and view C opening. I can get around this by making view A blank and moving it's current content to a new view, D. (For various reasons, I don't want view B to own view C, that's why it's not opening it) Am I over-complicating this? I'm sure there is a smarter way to go? ThanksT

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  • How could I evaluate this in code?

    - by WM
    There is a medieval puzzle about an old woman and a basket of eggs. On her way to market, a horseman knocks down the old woman and all the eggs are broken. The horseman will pay for the eggs, but the woman does not remember the exact number she had, only that when she took the eggs in pair, there was one left over; similarly, there was one left over when she took them three or five at a time. When she took them seven at a time, however, none were left. Write an application that can determine the smallest number of eggs the woman could have had. It might be a multiple of seven because there are no eggs left when it's seven at a time. But I have a problem. 49 eggs -1=2*24 49 eggs -1=3*16 49 eggs-4=5*9 49 eggs-0=7*7

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  • many to many tables linked to grid view

    - by yousof
    i have web page that save data for stores, these stores have activities i want to determine the activities for those stores. this reason i make three tables: first one is : tbOLActivity has fields: ActivityId int (pk), ActivityName nvarchar(50) second one is : tbOLStore has fields: StoreId int (pk), StoreName nvarchar(50), ActivityId int (fk), Address navrchar(50) therd one is: tbOLStoreActivty has fields : SerialNo int (pk), StoreId int (fk), ActivityId int (fk), Activity_Status int i make combobox in web page called "AcivityCombo" to display the data of tbOLActivity table If CtvAct.GetRecords("Fill_ActivityTb") = True Then AcivityCombo.DataSource = CtvAct.MainDataset.Tables("tbOLActivity").DefaultView AcivityCombo.DataTextField = "ActivityName" AcivityCombo.DataValueField = "ActivityId" AcivityCombo.DataBind() the problem is how to select item from this combo and insert it into gridview then save data into the tables

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  • Common views in viewControllers - Code re-usability

    - by Nitish
    I have few common views in most of my viewControllers. What I noticed is that I can reuse single code for all viewControllers which is absolutely wise. For this I decided to create a class Utils which has static methods like +(void)createCommonViews:(float)yAxis:(NSString*)text; In my case common views are three labels and two images. Problem : I am not able to add these views from Utils. I am wondering how can I send self as a parameter so that I may add the views from Utils. It may be wrong to add views outside the viewController. In that case what can be the solution? Taking all these views in a UIView, setting return type of Utils method as UIView and then adding UIView to viewController(after calling method from viewController) might solve my problem. But what I am looking for is some other solution. Thanks, Nitish

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  • Data table columns become out of order after changing data source.

    - by Scott Chamberlain
    This is kind of a oddball problem so I will try to describe the best that I can. I have a DataGridView that shows a list of contracts and various pieces of information about them. There are three view modes: Contract Approval, Pre-Production, and Production. Each mode has it's own set of columns that need to be displayed. What I have been doing is I have three radio buttons one for each contract style. all of them fire their check changed on this function private void rbContracts_CheckedChanged(object sender, EventArgs e) { dgvContracts.Columns.Clear(); if (((RadioButton)sender).Checked == true) { if (sender == rbPreProduction) { dgvContracts.Columns.AddRange(searchSettings.GetPreProductionColumns()); this.contractsBindingSource.DataMember = "Preproduction"; this.preproductionTableAdapter.Fill(this.searchDialogDataSet.Preproduction); } else if (sender == rbProduction) { dgvContracts.Columns.AddRange(searchSettings.GetProductionColumns()); this.contractsBindingSource.DataMember = "Production"; this.productionTableAdapter.Fill(this.searchDialogDataSet.Production); } else if (sender == rbContracts) { dgvContracts.Columns.AddRange(searchSettings.GetContractsColumns()); this.contractsBindingSource.DataMember = "Contracts"; this.contractsTableAdapter.Fill(this.searchDialogDataSet.Contracts); } } } Here is the GetxxxColumns function public DataGridViewColumn[] GetPreProductionColumns() { this.dgvTxtPreAccount.Visible = DgvTxtPreAccountVisable; this.dgvTxtPreImpromedAccNum.Visible = DgvTxtPreImpromedAccNumVisable; this.dgvTxtPreCreateDate.Visible = DgvTxtPreCreateDateVisable; this.dgvTxtPreCurrentSoftware.Visible = DgvTxtPreCurrentSoftwareVisable; this.dgvTxtPreConversionRequired.Visible = DgvTxtPreConversionRequiredVisable; this.dgvTxtPreConversionLevel.Visible = DgvTxtPreConversionLevelVisable; this.dgvTxtPreProgrammer.Visible = DgvTxtPreProgrammerVisable; this.dgvCbxPreEdge.Visible = DgvCbxPreEdgeVisable; this.dgvCbxPreEducationRequired.Visible = DgvCbxPreEducationRequiredVisable; this.dgvTxtPreTargetMonth.Visible = DgvTxtPreTargetMonthVisable; this.dgvCbxPreEdgeDatesDate.Visible = DgvCbxPreEdgeDatesDateVisable; this.dgvTxtPreStartDate.Visible = DgvTxtPreStartDateVisable; this.dgvTxtPreUserName.Visible = DgvTxtPreUserNameVisable; this.dgvCbxPreProductionId.Visible = DgvCbxPreProductionIdVisable; return new System.Windows.Forms.DataGridViewColumn[] { this.dgvTxtPreAccount, this.dgvTxtPreImpromedAccNum, this.dgvTxtPreCreateDate, this.dgvTxtPreCurrentSoftware, this.dgvTxtPreConversionRequired, this.dgvTxtPreConversionLevel, this.dgvTxtPreProgrammer, this.dgvCbxPreEdge, this.dgvCbxPreEducationRequired, this.dgvTxtPreTargetMonth, this.dgvCbxPreEdgeDatesDate, this.dgvTxtPreStartDate, this.dgvTxtPreUserName, this.dgvCbxPreProductionId, this.dgvTxtCmnHold, this.dgvTxtCmnConcern, this.dgvTxtCmnAccuracyStatus, this.dgvTxtCmnEconomicStatus, this.dgvTxtCmnSoftwareStatus, this.dgvTxtCmnServiceStatus, this.dgvTxtCmnHardwareStatus, this.dgvTxtCmnAncillaryStatus, this.dgvTxtCmnFlowStatus, this.dgvTxtCmnImpromedAccountNum, this.dgvTxtCmnOpportunityId}; } public DataGridViewColumn[] GetProductionColumns() { this.dgvcTxtProAccount.Visible = DgvTxtProAccountVisable; this.dgvTxtProImpromedAccNum.Visible = DgvTxtProImpromedAccNumVisable; this.dgvTxtProCreateDate.Visible = DgvTxtProCreateDateVisable; this.dgvTxtProConvRequired.Visible = DgvTxtProConvRequiredVisable; this.dgvTxtProEdgeRequired.Visible = DgvTxtProEdgeRequiredVisable; this.dgvTxtProStartDate.Visible = DgvTxtProStartDateVisable; this.dgvTxtProHardwareRequired.Visible = DgvTxtProHardwareReqiredVisable; this.dgvTxtProStandardDate.Visible = DgvTxtProStandardDateVisable; this.dgvTxtProSystemScheduleDate.Visible = DgvTxtProSystemScheduleDateVisable; this.dgvTxtProHwSystemCompleteDate.Visible = DgvTxtProHwSystemCompleteDateVisable; this.dgvTxtProHardwareTechnician.Visible = DgvTxtProHardwareTechnicianVisable; return new System.Windows.Forms.DataGridViewColumn[] { this.dgvcTxtProAccount, this.dgvTxtProImpromedAccNum, this.dgvTxtProCreateDate, this.dgvTxtProConvRequired, this.dgvTxtProEdgeRequired, this.dgvTxtProStartDate, this.dgvTxtProHardwareRequired, this.dgvTxtProStandardDate, this.dgvTxtProSystemScheduleDate, this.dgvTxtProHwSystemCompleteDate, this.dgvTxtProHardwareTechnician, this.dgvTxtCmnHold, this.dgvTxtCmnConcern, this.dgvTxtCmnAccuracyStatus, this.dgvTxtCmnEconomicStatus, this.dgvTxtCmnSoftwareStatus, this.dgvTxtCmnServiceStatus, this.dgvTxtCmnHardwareStatus, this.dgvTxtCmnAncillaryStatus, this.dgvTxtCmnFlowStatus, this.dgvTxtCmnImpromedAccountNum, this.dgvTxtCmnOpportunityId}; } public DataGridViewColumn[] GetContractsColumns() { this.dgvTxtConAccount.Visible = this.DgvTxtConAccountVisable; this.dgvTxtConAccuracyStatus.Visible = this.DgvTxtConAccuracyStatusVisable; this.dgvTxtConCreateDate.Visible = this.DgvTxtConCreateDateVisable; this.dgvTxtConEconomicStatus.Visible = this.DgvTxtConEconomicStatusVisable; this.dgvTxtConHardwareStatus.Visible = this.DgvTxtConHardwareStatusVisable; this.dgvTxtConImpromedAccNum.Visible = this.DgvTxtConImpromedAccNumVisable; this.dgvTxtConServiceStatus.Visible = this.DgvTxtConServiceStatusVisable; this.dgvTxtConSoftwareStatus.Visible = this.DgvTxtConSoftwareStatusVisable; this.dgvCbxConPreProductionId.Visible = this.DgvCbxConPreProductionIdVisable; this.dgvCbxConProductionId.Visible = this.DgvCbxConProductionVisable; return new System.Windows.Forms.DataGridViewColumn[] { this.dgvTxtConAccount, this.dgvTxtConImpromedAccNum, this.dgvTxtConCreateDate, this.dgvTxtConAccuracyStatus, this.dgvTxtConEconomicStatus, this.dgvTxtConSoftwareStatus, this.dgvTxtConServiceStatus, this.dgvTxtConHardwareStatus, this.dgvCbxConPreProductionId, this.dgvCbxConProductionId, this.dgvTxtCmnHold, this.dgvTxtCmnConcern, this.dgvTxtCmnAccuracyStatus, this.dgvTxtCmnEconomicStatus, this.dgvTxtCmnSoftwareStatus, this.dgvTxtCmnServiceStatus, this.dgvTxtCmnHardwareStatus, this.dgvTxtCmnAncillaryStatus, this.dgvTxtCmnFlowStatus, this.dgvTxtCmnImpromedAccountNum, this.dgvTxtCmnOpportunityId}; } The issue is when I check a button the first time, everything shows up ok. I choose another view, everything is ok. But when I click on the first view the columns are out of order (it is like they are in reverse order but it is not exactly the same). this happens only to the first page you click on, the other two are fine. You can click off and click back on as many times as you want after those initial steps, The first list you selected at the start will be out of order the other two will be correct. Any ideas on what could be causing this?

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  • Code First / Database First / Model First : are they just personnal preferences?

    - by Antoine M
    Merely knowing the internal functionality of each approaches, and after reading a lot of posts, I still can't figure out if each one of them is just a matter of personnal preference for the developper or if they deserve different axes of productivity ? Does one of them should be applyed for some specific productivity needs or MS is just beeing kind offering three different flavours ? Should we consider CF as a sort of improvement over DBF or MF and thinking of it as a futur standard on wich spending a peculiar intelectual investment ... ? Is there a link showing a sort of synthetic table with un-passionate pros and cons for each approach, a little bit like for web-forms and MVC. Sorry for those who will find this question redondant. I know it is.

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  • JQuery Autocomplete CSS not working?

    - by gath
    I am trying to implement JQuery Autocomplete pluggi using Django. I've been able to wire the thing together and I can actually see the result back in the HTML template. My problem is that the JQuery Autocomplete CSS doesn't seem to work. The results I get are not well formatted/styled, and they have no background and you cannot even select them. What is it that am missing? I have these three files in my media folder same folder: autocomplete.js dimensions.js autocomplete.css In my html template I have the following function: $(function(){ setAutoComplete("tags", "tagResults", "/taglookup/?query="); }); My textfield looks like this; <input type="text" name="tags" value=""> Where do I put the tagResults in my HTML template document? Every time I try to introduce a DIV with id="tagResults", JQuery throws an error. Any ideas?

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  • JTextArea thread safe?

    - by Dhaivat Pandya
    Hello everyone, I have some code that does some initialization (including making a JTextArea object), starts three seperate threads, and then these threads try to update the JTextArea (i.e. append() to it), but its not working at all. Nothing shows up on the JTextArea (however, during the initialzation, I print some test lines onto it, and that works fine). What's going on? How can I fix this? Also, each of those threads sleeps a random amount of time every time it has to update the JTextArea. Sorry I haven't provided any code, its all spread out over several files.

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  • Sub reports find the sub total and grand total of each sub report in the main report

    - by sonia
    i want to find the grand total from sub report subtotal. i have three subreports. 1. itemreport 2.laborreport 3. machine report. i have find total of that reports using shared variable. like using formula: shared numbervar totalitem=sum({storedprocedrename.columnname}) i have done dis in all the sbreports. now i m want the grand total of all these. i have written the formula in main report is: shared numbervar totalitem; // same variable used in subreport item shared numbervar labtotal; // same variable sed in subreport labor shared numbervar machinetotal; // same variable used in subreport machine numbervar total; total=totalitem+labtotal+machinetotal; total but it is not giving correct result.. it is not giving result in correct format plz tell me code of main report in detail.. thanks

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  • GridView items are displaying the wrong drawables sometimes.

    - by originalbryan
    I've implemented a GridView based on this tutorial. It works great unless open up the search dialog or rotate the screen then scroll around. When the search dialog and virtual keyboard appear, the drawables for each of my grid items shift. I can click on them and they do what I expect, except the drawable is wrong. The same problem happens when I go into landscape mode and scroll around. If I scroll down, up, the down again, the drawables are shuffled. For better illustration, let's say I have three objects, each with an image. Obj A shows an Apple Obj B shows a Banana Obj C shows a Cantaloupe When the shift occurs I end up with: Obj A shows an Cantaloupe Obj B shows a Banana Obj C shows a Apple The problem isn't consistent between the two causes (search dialog and screen rotate n' scroll), but each cause itself is consistent. Scrolling around repeatedly reveals a pattern as does the search dialog appearing. How can I stop this from happening?

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  • ActionScript 2.0 problem with the object's _visible parameter

    - by GMan
    Hey guys, I've been trying to build something simple in Flash 8, and I stumbled across something weird I cannot explain: I have an object, and at some point of the program, I want it to be visible (it is invisible at first), so I write: _root.myObj._visible = true; _root.gameOver.swapDepths(_root.getNextHighestDepth()); //so it will be on the top and this works fine, the object becomes visible and etc. What I planned to happen next is that the user presses a button on that same object, and the object will go invisible: on(release) { trace(_root.myObj._visible); _root.myObj._visible = false; trace(_root.myObj._visible); _root.gotoAndPlay("three"); } The trace returns at first true and later on false, so the command works, but oddly the object stays visible, that's what I don't understand. Thanks everybody in advance.

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  • Fire just once a Thread in Asp.net WebSite Global.asax

    - by Luís Custódio
    I've a legacy application using Asp.Net WebSite (winforms...) and I need run a background thread that collect periodically some files. But this thread must run just one time! My problem start when I put a method in Application_Start: void Application_Start(object sender, EventArgs e) { SetConnection(); SetNHibernate(); SetNinject(); SetExportThread(); } So I start my application on Visual Studio and three threads start to run. I need some singleton? or something?

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  • Which C++ graphics library should I use?

    - by mspoerr
    Hello, I found the following graphics libraries, but I am not sure which one I should use. Maybe there are some more... Graphviz (http://www.graphviz.org/) Boost Graph Library (http://www.boost.org/doc/libs/1_42_0/libs/graph/doc/index.html) Lemon (http://lemon.cs.elte.hu/trac/lemon) igraph (http://igraph.sourceforge.net/introduction.html) What it should do: draw a undirected network map come as header only or static lib for Windows the output format should be user editable Graphviz is the only one I tried so far, but I found no static lib for it, I failed to build it by my own and the documentation could be better. Therefore I looked around and found these other three libs. I would be glad to get some recommendations which lib to choose. Thanks, /mspoerr

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  • What does a linux device need to be seen by Hal?

    - by Jaime Soriano
    I'm trying to learn about device drivers on Linux Kernel, for that I've created three modules with: A bus type A device driver A fake device that does nothing now, only is registered Everything works fine, I can load the bus, the driver and the module that creates the device. Everything appears on sysfs, including the link between the device and the device driver that indicates that they are binded. And when the driver and device are loaded, I can see using udevadm monitor that also some events are provoked: KERNEL[1275564332.144997] add /module/bustest_driver (module) KERNEL[1275564332.145289] add /bus/bustest/drivers/bustest_example (drivers) UDEV [1275564332.157428] add /module/bustest_driver (module) UDEV [1275564332.157483] add /bus/bustest/drivers/bustest_example (drivers) KERNEL[1275564337.656650] add /module/bustest_device (module) KERNEL[1275564337.656817] add /devices/bustest_device (bustest) UDEV [1275564337.658294] add /module/bustest_device (module) UDEV [1275564337.664707] add /devices/bustest_device (bustest) But after everything, the device doesn't appear on hal. What else need a device to be seen by hal?

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  • Create categorical variable in R based on range

    - by Stedy
    I have a dataframe with a column of integers that I would like to use as a reference to make a new categorical variable. I want to divide the variable into three groups and set the ranges myself (ie 0-5, 6-10, etc). I tried cut but that divides the variable into groups based on a normal distribution and my data is right skewed. I have also tried to use if/then statements but this outputs a true/false value and I would like to keep my original variable. I am sure that there is a simple way to do this but I cannot seem to figure it out. Any advice on a simple way to do this quickly?

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  • What is better for a student programming in C++ to learn for writing GUI: C# vs QT?

    - by flashnik
    I'm a teacher(instructor) of CS in the university. The course is based on Cormen and Knuth and students program algorithms in C++. But sometimes it is good to show how an algorithm works or just a result of task through GUI. Also in my opinion it's very imporant to be able to write full programs. They will have courses concerning GUI but a three years, later, in fact, before graduatuion. I think that they should be able to write simple GUI applications earlier. So I want to teach them it. How do you think, what is more useful for them to learn: programming GUI with QT or writing GUI in C# and calling unmanaged C++ library?

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  • JavaScript: How can I delay running some JS code until my JS file downloaded?

    - by Henryh
    I have the following code: <script type="text/javascript"> function addScript(url) { var script = document.createElement('script'); script.src = url; document.getElementsByTagName('head')[0].appendChild(script); } addScript('http://example.com/One.js'); addScript('http://example.com/Two.js'); addScript('http://example.com/Three.js'); addScript('http://example.com/Four.js'); ... // run code below this point once Two.js has been downloaded and excuted </script> How can I detect when one of my JavaScript files has been downloaded and executed so that I can use it?

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  • Copy constructor with more than one parameter

    - by Ravi Gupta
    I am learning C++ and was reading copy constructor from the C++: The Complete Reference. The books says that It is permissible for a copy constructor to have additional parameters as long as they have default arguments defined for them. However, in all cases the first parameter must be a reference to the object doing the initializing. But I am confused that how we are going to pass those additional parameters? I am sure there should be some way which is not given in the book and which I am unable to figure out. Can anyone help me out? EDIT: Also is it possible to pass these extra parameters in all three cases i.e. ¦ When one object explicitly initializes another, such as in a declaration ¦ When a copy of an object is made to be passed to a function ¦ When a temporary object is generated (most commonly, as a return value)

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  • Accessing database problem

    - by anarche
    Ok, so I've got an SQLiteOpenHelper that prepares and returns a SQLiteDatabase object; this is written singleton-pattern, so the database is opened once and only closed when the Activity closes. From there I have three database wrappers encapsulating the queries (some returning cursors to datasets, some inserting data) used by the Activity. I want to insert data from one View, then have that automatically update in another View on the same Dialogue. I'm writing this on a notepad and testing on the phone (since the emulator crashes the notepad...), so I can't pull up stacktraces atm. So questions: 1) are there limitations to writing to a database, when there are cursors open on the database? 2) Does a Cursor.requery()? call update the ListView with the cursor as a data connector?

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  • Updating/Inserting multiple rows using jQuery and OData (WCF Data Services)

    - by Pieter
    I have three tables, Template, Fields and TemplateFields. TemplateFields holds the selected fields for each template. I need to update TemplateFields when the user is finished selecting the fields. The only way I can see to do this is by deleting all the TemplateFields for that Template and then add them one by one in separate requests. This is really bad because there is not transaction to fall back onto and there will also be MANY requests. Is there a way of adding multiple 'objects' at once using WCF Data Services? I can then use an Interceptor to update the database.

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  • How do you pronounce large hex numbers?

    - by warrenm
    This question might be subjective, but I'm hoping there's some consensus that I just don't know about. Short hex numbers are relatively easy to spell out (e.g., 0xC4A might be "cee-four-ay"). Hex numbers ending with a multiple of three zeros are likewise pretty easy (e.g., 0xC000 might be "cee-thousand"). But is there a concise way to pronounce 0xFFFF0000 or 0xCA000000? Magic numbers like 0xDEADBEEF are popular for their pronounceability, but I'm mostly asking about large-ish, round numbers that seem like they should have a more concise pronunciation.

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