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• (N)Hibernate: deleting orphaned ternary association rows when either associated row is deleted.

  - by anthony

  I have a ternary association table created using the following mapping: <map name="Associations" table="FooToBar"> <key column="Foo_id"/> <index-many-to-many class="Bar" column="Bar_id"/> <element column="AssociationValue" /> </map> I have 3 tables, Foo, Bar, and FooToBar. When I delete a row from the Foo table, the associated row (or rows) in FooToBar is automatically deleted. This is good. When I delete a row from the Bar table, the associated row (or rows) in FooToBar remain, with a stale reference to a Bar id that no longer exists. This is bad. How can I modify my hbm.xml to remove stale FooToBar rows when deleting from the Bar table?

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• Visual c++ opencv 2.1 contains()

  - by kaushalyjain

  how to check whether a given point is contained in a rectangle using the contains() function in Rect_ construct... Please give me the exact function and its parameters.Like when i type this Point b(2,2); Rect a(10,10,50,50); cout<< Rect_::contains(b); There is a compile error saying 1c:\users\kaushal\documents\visual studio 2008\projects\test1\test1.cpp(23) : error C2352: 'cv::Rect_<Tp::contains' : illegal call of non-static member function 1c:\opencv2.1\include\opencv\cxcore.hpp(385) : see declaration of 'cv::Rect<_Tp::contains'

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• Findbugs warning: Equals method should not assume anything about the type of its argument

  - by Uri

  When running FindBugs on my project, I got a few instances of the error described above. Namely, my overriding versions of equals cast the RHS object into the same type as the object in which the overriding version is defined. However, I'm not sure whether a better design is possible, since AFAIK Java does not allow variance in method parameters, so it is not possible to define any other type for the equals parameter. Am I doing something very wrong, or is FindBugs too eager? A different way to phrase this question is: what is the correct behavior if the object passed to equals is not the same type as an LHS: Is this a false, or should there be an exception? For example: public boolean equals(Object rhs) { MyType rhsMyType = (MyType)rhs; // Should throw exception if(this.field1().equals(rhsMyType.field1())... // Or whatever }

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• Problem with referencing CSS and Javascript files relatively

  - by Markus

  I have an IIS web site. This web site contains other web sites so the structure is like this. \ MainWebSite\ App1\ App2\ All sites are Asp.net MVC Webapplications. In the MasterPage of App1, I reference the script files like this: <script type="text/javascript" src="../../Scripts/jquery-ui-1.8.custom.min.js"> </script> The Problem is that he now tries to find the File at http:\server\MainWebSite\Scripts.... how can i work around that? Should I put all my Scripts and CSS files into the root directory, is that a preferred solution?

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• T-SQL foreign key check constraint

  - by PaN1C_Showt1Me

  When you create a foreign key constraint in a table and you create the script in MS SQL Management Studio, it looks like this. ALTER TABLE T1 WITH CHECK ADD CONSTRAINT FK_T1 FOREIGN KEY(project_id) REFERENCES T2 (project_id) GO ALTER TABLE T1 CHECK CONSTRAINT FK_T1 GO What I don't understand is what purpose has the second alter with check constraint. Isn't creating the FK constraint enough? Do you have to add the check constraint to assure reference integrity ? Another question: how would it look like then when you'd write it directly in the column definition? CREATE TABLE T1 ( my_column INT NOT NULL CONSTRAINT FK_T1 REFERENCES T2(my_column) ) Isn't this enough?

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• How to get parent node in Stanford's JavaNLP?

  - by roddik

  Hello. Suppose I have such chunk of a sentence: (NP (NP (DT A) (JJ single) (NN page)) (PP (IN in) (NP (DT a) (NN wiki) (NN website)))) At a certain moment of time I have a reference to (JJ single) and I want to get the NP node binding A single page. If I get it right, that NP is the parent of the node, A and page are its siblings and it has no children (?). When I try to use the .parent() method of a tree, I always get null. The API says that's because the implementation doesn't know how to determine the parent node. Another method of interest is .ancestor(int height, Tree root), but I don't know how to get the root of the node. In both cases, since the parser knows how to indent and group trees, it must know the "parent" tree, right? How can I get it? Thanks

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• jquery dialog button

  - by Nishima

  Hi All, Can anyone tell em how can call a function with parameters on a dialog and call that same function from somwhere else also. function showEditDialog(TagDivId, id, type, bFlag) { try { stickyinfo = new Array(); jQuery('#'+TagDivId).dialog({ autoOpen: false, height : 535, width:320, modal: true, resizable:false, //closeOnEscape:false, buttons: { Cancel: function() { jQuery(this).dialog('close'); }, 'OK': function showEditDialogOkFunc(id) { //stickyinfo.clear(); //Register Collaboba Tag with the Server. var color = jQuery('#' + id).css('background-color'); var tagid = document.getElementById(id); if(tagid != null) { GetTagInformation(id, stickyinfo); } else { return false; } } } catch(e) { alert(e); } } Is it ok the way i m calling showEditDialogOkFunc(id) and can i call this function from anywhere else.Since it's a dialog function will it get all the properies of the dialog defined above the ok function.And if i call the OK function from anuwhere else will it get all the properties of the dialog o not. Thanks

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• Get the ID of user that like my page.

  - by jon

  Hello I would like to know if there is any API feature that can tell me which users liked my application page. I know that it is possible to check if a user is a fan of any given Page using page.isFan verification or to get the number of fans. But is it possible to get the fans' User ID? If so, is it possible to get that data ordered by the date they became fans of the page? For exemple usign FQL i can get the user ID of someone o like an facebook object like post or photo. http://developers.facebook.com/docs/reference/fql/like Can i do this for the people who liked my page? Thanks for any help or guideline .

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• Software version numbering with GIT

  - by revocoder revocorp

  Short Want to set automatic (or at least semi-auto) software version numbering in GIT Detailed I'm newby to GIT. Recently created some bare git repo and made some commits and pushes into it. Want to set some starting version number (like v1.0) to my project. I know, there is tag for this reason. Googled it and found bunch of materials. For example: git - the simple guide blog says: You can create a new tag named 1.0.0 by executing git tag 1.0.0 1b2e1d63ff the 1b2e1d63ff stands for the first 10 characters of the commit id you want to reference with your tag. Kudelabs says: $ git tag -a 'milestone1' -m 'starting work for milestone 1, due in 2 weeks' $ git push --tags I'm really confused. What is difference between first and second method: git tag and git tag-a. Can't figure out which to use for this purpose. How can I set version number in bare remote repo, to which I made 5-6 commits and pushes?

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• printing parent page and iframe contents from print button withing iframe.

  - by user329094

  I am using an iframe (I hate them by the way!) to call in a 3rd party checkout page into my parent page. The check out page doesn't allow me to pass any variables into it other than $total_amount. So, if an individual purchases 2 or more items they have no record of the items they purchase just the total amount. I have echoed the list of items purchased with php above the iframe for their reference. The final checkout step in the iframe allows you to print the receipt. However, it only prints the iframe content. Can you tell a print button within an iframe to print the parent page as well?

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• SqlServer2008 + expensive union

  - by Tim Mahy

  Hi al, we have 5 tables over which we should query with user search input throughout a stored procedure. We do a union of the similar data inside a view. Because of this the view can not be materialized. We are not able to change these 5 tables drastically (like creating a 6th table that contains the similar data of the 5 tables and reference that new one from the 5 tables). The query is rather expensive / slow what are our other options? It's allowed to think outside the box. Unfortunately I cannot give more information like the table/view/SP definition because of customer confidentiality... greetings, Tim

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• Select Range by string

  - by Petott

  How I can change this feature so I select the range of characters in a word document between the characters "E" and "F", if I have; xasdasdEcdscasdcFvfvsdfv is underlined to me the range - cdscasdc private void Rango() { Word.Range rng; Word.Document document = this.Application.ActiveDocument; object startLocation = "E"; object endLocation = "F"; // Supply a Start and End value for the Range. rng = document.Range(ref startLocation, ref endLocation); // Select the Range. rng.Select(); } This function will not let me pass by reference two objects of string type....... Thanks

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• Overriding Page class constructor in ASP.NET code-behind file -- when is it called?

  - by CSharp Noob

  If I override the System.Web.UI.Page constructor, as shown, when does DoSomething() get called in terms of the page lifecycle? I can't seem to find this documented anywhere. namespace NameSpace1 { public partial class MyClass : System.Web.UI.Page { public MyClass() { DoSomething(); } protected void Page_Load(object sender, EventArgs e) { } } } For reference, here is the ASP.NET Page Lifecycle Overview: http://msdn.microsoft.com/en-us/library/ms178472.aspx Turns out the best answer was right in the MSDN article. I just had to look carefully at the diagram.

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• Can I get the method local variables through a stack trace in C#?

  - by smwikipedia

  I want to get a detailed log about my stack trace. I can get a StackFrame and then the method and then get all the parameters of that method. Just as the following code: StackTrace st = new StackTrace(); StackFrame[] sfs = st.GetFrames(); foreach (StackFrame sf in sfs) { MethodBase method = sf.GetMethod(); ParameterInfo[] pis = method.GetParameters(); foreach (ParameterInfo pi in pis) { .... } Console.WriteLine(method.Name); } But how could I get the local variables infomation within a method? Could someone shed some light on me? Many thanks.

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• how to invoke function writen in a validation.php and stroe all function name in database.

  - by saint

  Respected all, i'm in trouble. I created a file with name validation.php and store all my validation functionality in this file with different function names like, check_textbox(parm1, pram2, pram3, pram4) { // Definition here } check_chkBox(parm1, pram2) { // Definition here } and so on.....! then i created a table in mysql with the name tbValidation and stored all the function name with parameters in a table. the record stored in table look like as: interfaceid---------- functionNameWithReturnValue 1 ------------ check_textbox(parm1, pram2, pram3, pram4) = 1 2 ------------ check_textbox(parm1, pram2, pram4) = 0 3 ------------ check_textbox(parm1, pram2, pram4) = 1) AND (check_chkBox(parm1, pram2)=0) when i fetch record from database i want to invoke those functions that store in validation.php $data = mysql_fetch_array($drow); if($db->row_count > 0) { // when i fetch row one from database. I used this one but not working // @ $data[0] have value "check_textbox(parm1, pram2, pram3, pram4) = 1" if($data[0]) { // Do this } } How i can do this task...? :(

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• Navigation Bar from database

  - by KareemSaad

  i had soulation .i want to make navigation bar with items i will select them as (category,Product,....) So i made stored to get them throught paramater will pass it,s value from query string as. ALTER Proc Navcategory ( @Category_Id Int ) As Select Distinct Categories.Category,Categories.Category_Id From Categories Where Category_Id=@Category_Id and i mentioned in cs as if (Request.QueryString["Category_Id"] != null) { Banar.ImageUrl = "Handlers/Banner.ashx?Category_Id=" + Request.QueryString["Category_Id"] + ""; using (SqlConnection conn = Connection.GetConnection()) { SqlCommand cmd = new SqlCommand(); cmd.Connection = conn; cmd.CommandType = CommandType.StoredProcedure; cmd.CommandText = "Navcategory"; cmd.Parameters.Add(Parameter.NewInt("@Category_Id", Request.QueryString["Category_Id"])); SqlDataReader dr = cmd.ExecuteReader(); if (dr.Read()) { LblNavigaton.Visible = true; LblNavigaton.Text = dr["Category"].ToString(); } } } so the result will be ex. Fridge (Category when querstring(category_Id)) 4Door (Product when querystring (Product_Id)) But I want the result fridge4Door.......

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• Model objects versions in Django

  - by pablo

  Hi I'm building an e-commerce website. I have a Product and Order models. It's possible that a customer order a product and then the admin change its price or other fields before the customer actually get it. A possible solution is to add a 'version' field to the Product model. When the admin update a product field I'll add a timestamp and create a new object instead of updating the old one. An Order will have a reference to a specific product version. Does this make sense? Will overriding the Product Save method be sufficient to make it work? Thanks

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• Do i need to insert one fake row in database ?

  - by Ankit Rathod

  Hello, I have few tables like example. Users Books UsersBookPurchase UID BookId UserId UName Name BookId Password Price Email This is fine. I am having my own login system but i am also using some 3rd party to validate like OpenID or facebook Authetication. My question is if the user is able to log in successfully using OpenID or facebook Authentication, what steps do i need to do i.e do i have to insert one fake row in Users table because if i do not insert how will integrity be maintained. I mean what user id should i insert in UsersBookPurchase when the person who has logged in using Facebook Authentication has made a purchase because the UserId is reference key from Users table. Please give me a high level overview of what i need to do because this is fairly common scenario. Thanks in advance :)

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• CouchDB Map/Reduce raises execption in reduce function?

  - by fuzzy lollipop

  my view generates keys in this format ["job_id:1234567890", 1271430291000] where the first key element is a unique key and the second is a timestamp in milliseconds. I run my view with this elapsed_time?startkey=["123"]&endkey=["123",{}]&group=true&group_level=1 and here is my reduce function, the intention is to reduce the output to get the earliest and latest timestamps and return the difference between them and now function(keys,values,rereduce) { var now = new Date().valueOf(); var first = Number.MIN_VALUE; var last = Number.MAX_VALUE; if (rereduce) { first = Math.max(first,values[0].first); last = Math.min(last,values[0].last); } else { first = keys[0][0][1]; last = keys[keys.length-1][0][1]; } return {first:now - first, last:now - last}; } and when processing a query it constantly raises the following execption: function raised exception (new TypeError("keys has no properties", "", 1)) I am making sure not to reference keys inside my rereduce block. Why does this function constantly raise this exception?

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• ajax strange error with sending multiple parameter

  - by kawtousse

  hi everyone, please check with me where is the error in this ajax code to send 2 parameters: var xhr = getXhr(); // On défini ce qu'on va faire quand on aura la réponse xhr.onreadystatechange = function(){ // On ne fait quelque chose que si on a tout reçu et que le serveur est ok if(xhr.readyState == 4 && xhr.status == 200) { selects = xhr.responseText; // On se sert de innerHTML pour rajouter les options a la liste //document.getElementById('prjsel').innerHTML = selects; } }; xhr.open("POST","ServletEdition",true); xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded'); id=document.getElementById(idIdden).value; fu=document.getElementById("formUpdate").value; //alert(fu); var i=1; xhr.send("id=" +id+", fu="+i); i cant got the value of fu i don't know why. thanks

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• JQuery-tmpl Template Switching Not working.

  - by Mike

  I'm trying to implement "more/less" functionality using the official jquery-tmpl plugin. I've looked at the examples, but I cannot seem to get the functionality to work in my own implementation. When I click on one of my "More" buttons, I seem to get an error thrown of: Uncaught TypeError: Property 'tmpl' of object #<an Object> is not a function This is my implementation here From what I can tell, the example I'm trying to replace is doing the following: Render the "Master" template On-click: Find the corresponding template object (tmplItem) to the clicked element. Pass in reference to a new template. Call the update function to re-render. Have I understood the documentation wrong? From what I can tell I'm doing the same thing as the example on the official documentation.

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• Problem linking SDL_Image against libpng

  - by Tim Jones

  I'm trying to compile SDL_Image 1.2.10 with MinGW + MSys (gcc 4.5.0) on Windows, I have compiled all the requires libs (zlib 1.2.5, libpng 1.4.2, libjpeg 8a, libtiff 3.9.2). SDL_Image compiles fine, but fails to link to libpng, throwing .libs/IMG_png.o:IMG_png.c:(.text+0x16): undefined reference errors on various png structs. If I run ./configure --prefix=/mingw --disable-png for SDL_Image, it compiles and links against the other libs just fine. I have tried older versions of libpng (1.2.43), but they also caused SDL_Image to throw the same errors.

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• Casting a primitive int to a Number

  - by Tamer

  Let's say that I have the following: int a = 2; Number b = (Number) a; System.out.println(b); // Prints 2 http://java.sun.com/docs/books/jls/first_edition/html/15.doc.html#238146 says that a primitive value may not be cast to a reference type. Does Java know to create an Integer from the primitive int and then cast to the superclass? How exactly does Java handle this behind the scenes? Thanks!

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• SelfReferenceProperty vs. ListProperty Google App Engine

  - by John

  Hi All, I am experimenting with the Google App Engine and have a question. For the sake of simplicity, let's say my app is modeling a computer network (a fairly large corporate network with 10,000 nodes). I am trying to model my Node class as follows: class Node(db.Model): name = db.StringProperty() neighbors = db.SelfReferenceProperty() Let's suppose, for a minute, that I cannot use a ListProperty(). Based on my experiments to date, I can assign only a single entity to 'neighbors' - and I cannot use the "virtual" collection (node_set) to access the list of Node neighbors. So... my questions are: Does SelfReferenceProperty limit you to a single entity that you can reference? If I instead use a ListProperty, I believe I am limited to 5,000 keys, which I need to exceed. Thoughts? Thanks, John

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• C#: proprietary DLLs requiring access to my assemblies

  - by Craig Johnston

  My solution uses a proprietary assembly, which when debugging the solution throws an Exception saying it can't find an assembly that is meant to be one of the projects in my solution. I cannot add a reference to the proprietary assembly because all I have is the DLL. When I compile everything into a single application directory and run the app it works fine, but I want to debug. Where should assemblies be placed if you want a proprietary assembly in the solution to see them? I assume the issue is that there is no path specified and it is just looking in a default directory of some kind.

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