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• Joining on a common table, how do you get a FULL OUTER JOIN to expand on another table?

  - by stimpy77

  I've scoured StackOverflow and Google for an answer to this problem. I'm trying to create a Microsot SQL Server 2008 view. Not a stored procedure. Not a function. Just a query (i.e. a view). I have three tables. The first table defines a common key, let's say "CompanyID". The other two tables have a sometimes-common field, let's say "EmployeeName". I want a single table result that, when my WHERE clause says "WHERE CompanyID = 12" looks like this: CompanyID | TableA | TableB 12 | John Doe | John Doe 12 | Betty Sue | NULL 12 | NULL | Billy Bob I've tried a FULL OUTER JOIN that looks like this: SELECT Company.CompanyID, TableA.EmployeeName, TableB.EmployeeName FROM Company FULL OUTER JOIN TableA ON Company.CompanyID = TableA.CompanyID FULL OUTER JOIN TableB ON Company.CompanyID = TableB.CompanyID AND (TableA.EmployeeName IS NULL OR TableB.EmployeeName IS NULL OR TableB.EmployeeName = TableA.EmployeeName) I'm only getting the NULL from one matched table, I'm not getting the expansion for the other table. In the above sample, I'm basically only getting the first and third rows and not the second. Can someone help me create this query and show me how this is done correctly? BTW I already have a stored procedure that looks very clean and populates an in-memory table, but that isn't what I want. Thanks.

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• C# using consts in static classes

  - by NickLarsen

  I was plugging away on an open source project this past weekend when I ran into a bit of code that confused me to look up the usage in the C# specification. The code in questions is as follows: internal static class SomeStaticClass { private const int CommonlyUsedValue = 42; internal static string UseCommonlyUsedValue(...) { // some code value = CommonlyUsedValue + ...; return value.ToString(); } } I was caught off guard because this appears to be a non static field being used by a static function which some how compiled just fine in a static class! The specification states (§10.4): A constant-declaration may include a set of attributes (§17), a new modifier (§10.3.4), and a valid combination of the four access modifiers (§10.3.5). The attributes and modifiers apply to all of the members declared by the constant-declaration. Even though constants are considered static members, a constant-declaration neither requires nor allows a static modifier. It is an error for the same modifier to appear multiple times in a constant declaration. So now it makes a little more sense because constants are considered static members, but the rest of the sentence is a bit surprising to me. Why is it that a constant-declaration neither requires nor allows a static modifier? Admittedly I did not know the spec well enough for this to immediately make sense in the first place, but why was the decision made to not force constants to use the static modifier if they are considered constants? Looking at the last sentence in that paragraph, I cannot figure out if it is regarding the previous statement directly and there is some implicit static modifier on constants to begin with, or if it stands on its own as another rule for constants. Can anyone help me clear this up?

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• Lucene complex structure search

  - by archer

  Basically I do have pretty simple database that I'd like to index with Lucene. Domains are: // Person domain class Person { Set<Pair> keys; } // Pair domain class Pair { KeyItem keyItem; String value; } // KeyItem domain, name is unique field within the DB (!!) class KeyItem{ String name; } I've tens of millions of profiles and hundreds of millions of Pairs, however, since most of KeyItem's "name" fields duplicates, there are only few dozens KeyItem instances. Came up to that structure to save on KeyItem instances. Basically any Profile with any fields could be saved into that structure. Lets say we've profile with properties - name: Andrew Morton - eduction: University of New South Wales, - country: Australia, - occupation: Linux programmer. To store it, we'll have single Profile instance, 4 KeyItem instances: name, education,country and occupation, and 4 Pair instances with values: "Andrew Morton", "University of New South Wales", "Australia" and "Linux Programmer". All other profile will reference (all or some) same instances of KeyItem: name, education, country and occupation. My question is, how to index all of that so I can search for Profile for some particular values of KeyItem::name and Pair::value. Ideally I'd like that kind of query to work: name:Andrew* AND occupation:Linux* Should I create custom Indexer and Searcher? Or I could use standard ones and just map KeyItem and Pair as Lucene components somehow?

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• How to code a URL shortener?

  - by marco92w

  I want to create a URL shortener service where you can write a long URL into an input field and the service shortens the URL to "http://www.example.org/abcdef". Instead of "abcdef" there can be any other string with six characters containing a-z, A-Z and 0-9. That makes 56 trillion possible strings. My approach: I have a database table with three columns: id, integer, auto-increment long, string, the long URL the user entered short, string, the shortened URL (or just the six characters) I would then insert the long URL into the table. Then I would select the auto-increment value for "id" and build a hash of it. This hash should then be inserted as "short". But what sort of hash should I build? Hash algorithms like MD5 create too long strings. I don't use these algorithms, I think. A self-built algorithm will work, too. My idea: For "http://www.google.de/" I get the auto-increment id 239472. Then I do the following steps: short = ''; if divisible by 2, add "a"+the result to short if divisible by 3, add "b"+the result to short ... until I have divisors for a-z and A-Z. That could be repeated until the number isn't divisible any more. Do you think this is a good approach? Do you have a better idea?

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• LINQ to SQL - Tracking New / Dirty Objects

  - by Joseph Sturtevant

  Is there a way to determine if a LINQ object has not yet been inserted in the database (new) or has been changed since the last update (dirty)? I plan on binding my UI to LINQ objects (using WPF) and need it to behave differently depending whether or not the object is already in the database. MyDataContext context = new MyDataContext(); MyObject obj; if (new Random().NextDouble() > .5) obj = new MyObject(); else obj = context.MyObjects.First(); // How can I distinguish these two cases? The only simple solution I can think of is to set the primary key of new records to a negative value (my PKs are an identity field and will therefore be set to a positive integer on INSERT). This will only work for detecting new records. It also requires identity PKs, and requires control of the code creating the new object. Is there a better way to do this? It seems like LINQ must be internally tracking the status of these objects so that it can know what to do on context.SubmitChanges(). Is there some way to access that "object status"? Clarification Apparently my initial question was confusing. I'm not looking for a way to insert or update records. I'm looking for a way, given any LINQ object, to determine if that object has not been inserted (new) or has been changed since its last update (dirty).

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• Zend: How to populate data to checkboxes?

  - by NAVEED

  I am working on zend. I have a form with some checkboxes. I want to get data from database and populate this data to this form. If '1' is stored in table field then tick the check box otherwise leave it alone. In textboxes and dropdowns, data is easily populated but how to check a checkbox in action. I am creating checkboxes and textboxes elements like this in form.php: // Person name $person = $this->CreateElement('text', 'name'); $person->setLabel('Name'); $elements[] = $person; // Organization name $person = $this->CreateElement('text', 'organization'); $person->setLabel('Organization'); $elements[] = $person; // isAdmin Checkbox $isAdmin = $this->CreateElement('checkbox', 'isAdmin'); $isAdmin->setLabel('Admin'); $elements[] = $isAdmin; $this->addElements($elements); $this->setElementDecorators(array('ViewHelper')); // set form decorator (what script will render the form) $this->setDecorators(array(array('ViewScript' , array('viewScript' => 'organization/accessroles-form.phtml')))); And populating data like this (for example): // Prepare data to populate $data['name'] = 'Naveed'; $data['organization'] = 'ABC'; $data['isAdmin'] = '1'; // Populate editable data $this->view->form->populate( $data ); It is populating data in textboxes but not checking the checkbox? Any idea that how to check a checkbox from action? Thanks

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• Parsing large delimited files with dynamic number of columns

  - by annelie

  Hi, What would be the best approach to parse a delimited file when the columns are unknown before parsing the file? The file format is Rightmove v3 (.blm), the structure looks like this: #HEADER# Version : 3 EOF : '^' EOR : '~' #DEFINITION# AGENT_REF^ADDRESS_1^POSTCODE1^MEDIA_IMAGE_00~ // can be any number of columns #DATA# agent1^the address^the postcode^an image~ agent2^the address^the postcode^^~ // the records have to have the same number of columns as specified in the definition, however they can be empty etc #END# The files can potentially be very large, the example file I have is 40Mb but they could be several hundred megabytes. Below is the code I had started on before I realised the columns were dynamic, I'm opening a filestream as I read that was the best way to handle large files. I'm not sure my idea of putting every record in a list then processing is any good though, don't know if that will work with such large files. List<string> recordList = new List<string>(); try { using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read)) { StreamReader file = new StreamReader(fs); string line; while ((line = file.ReadLine()) != null) { string[] records = line.Split('~'); foreach (string item in records) { if (item != String.Empty) { recordList.Add(item); } } } } } catch (FileNotFoundException ex) { Console.WriteLine(ex.Message); } foreach (string r in recordList) { Property property = new Property(); string[] fields = r.Split('^'); // can't do this as I don't know which field is the post code property.PostCode = fields[2]; // etc propertyList.Add(property); } Any ideas of how to do this better? It's C# 3.0 and .Net 3.5 if that helps. Thanks, Annelie

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• Multiple model forms with some pre-populated fields

  - by jimbocooper

  Hi! Hope somebody can help me, since I've been stuck for a while with this... I switched to another task, but now back to the fight I still can't figure out how to come out from the black hole xD The thing is as follows: Let's say I've got a product model, and then a set of Clients which have rights to submit data for the products they've been subscribed (Many to Many from Client to Product). Whenever my client is going to submit data, I need to create as many forms as products he's subscribed, and pre-populate each one of them with the "product" field as long as perform a quite simple validation (some optional fields have to be completed if it's client's first submission). I would like one form "step" for each product submission, so I've tried formWizards... but the problem is you can't pre-assign values to the forms... this can be solved afterwards when submitting, though... but not the problem that it doesn't allow validation either, so at the end of each step I can check some data before rendering next step. Then I've tried model formsets, but then there's no way to pre-populate the needed fields. I came across some django plugins, but I'm not confident yet if any of them will make it.... Did anybody has a similar problem so he can give me a ray of light? Thanks a lot in advance!! :) edit: The code I used in the formsets way is as follows: prods = Products.objects.filter(Q(start_date__lte=today) & Q(end_date__gte=today), requester=client) num = len(prods) PriceSubmissionFormSet = modelformset_factory(PriceSubmission, extra=num) formset = PriceSubmissionFormSet(queryset=PriceSubmission.objects.none())

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• Asp.Net MVC 2: How exactly does a view model bind back to the model upon post back?

  - by Dr. Zim

  Sorry for the length, but a picture is worth 1000 words: In ASP.NET MVC 2, the input form field "name" attribute must contain exactly the syntax below that you would use to reference the object in C# in order to bind it back to the object upon post back. That said, if you have an object like the following where it contains multiple Orders having multiple OrderLines, the names would look and work well like this (case sensitive): This works: Order[0].id Order[0].orderDate Order[0].Customer.name Order[0].Customer.Address Order[0].OrderLine[0].itemID // first order line Order[0].OrderLine[0].description Order[0].OrderLine[0].qty Order[0].OrderLine[0].price Order[0].OrderLine[1].itemID // second order line, same names Order[0].OrderLine[1].description Order[0].OrderLine[1].qty Order[0].OrderLine[1].price However we want to add order lines and remove order lines at the client browser. Apparently, the indexes must start at zero and contain every consecutive index number to N. The black belt ninja Phil Haack's blog entry here explains how to remove the [0] index, have duplicate names, and let MVC auto-enumerate duplicate names with the [0] notation. However, I have failed to get this to bind back using a nested object: This fails: Order.id // Duplicate names should enumerate at 0 .. N Order.orderDate Order.Customer.name Order.Customer.Address Order.OrderLine.itemID // And likewise for nested properties? Order.OrderLine.description Order.OrderLine.qty Order.OrderLine.price Order.OrderLine.itemID Order.OrderLine.description Order.OrderLine.qty Order.OrderLine.price I haven't found any advice out there yet that describes how this works for binding back nested ViewModels on post. Any links to existing code examples or strict examples on the exact names necessary to do nested binding with ILists? Steve Sanderson has code that does this sort of thing here, but we cannot seem to get this to bind back to nested objects. Anything not having the [0]..[n] AND being consecutive in numbering simply drops off of the return object. Any ideas?

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• dynamic link_to_remote in rails with jquery

  - by Claus Lensbøl

  Hi I'm trying to pass a string with a link_to_remote call as the :id, and the string should be collected from an input field with and id of "movie_title". <div id="search_list">Nothing here yet</div> <br /> <% semantic_form_for @movie do |f| %> <% f.inputs do -%> <%= f.input :title, :class => "movie_title" %> <%= link_to_remote( 'Search...', { :url => { :action => :imdb_search, :id => "'+$('\#movie_title').value+'" } }, { :title => "Search for this movie", :class => "imdb_search" } ) -%> [...removed text that does not matter...] <% end -%> <%= f.buttons %> <% end %> I keep getting an javascript error, and if I remove the # from the jquery in the link, it returns "Undefined". The link I get is: <a class="imdb_search" href="#" onclick="jQuery.ajax({data:'authenticity_token=' + encodeURIComponent('yHPHYTZsPTQLi9JYSauUYcoie/pqPPk2uHBTN0PzNsQ='), dataType:'script', type:'post', url:'/movies/imdb_search/'+$('%23movie_title').value+''}); return false;" title="Search for this movie">Search...</a> So I want the link updated with the contents of movie_title. How do I do that?

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• Is there a way in .NET to access the bytecode/IL/CLR that is currently running?

  - by Alix

  Hi. I'd like to have access to the bytecode that is currently running or about to run in order to detect certain instructions and take specific actions (depending the instructions). In short, I'd like to monitor the bytecode in order to add safety control. Is this possible? I know there are some AOP frameworks that notify you of specific events, like an access to a field or the invocation of a method, but I'd like to skip that extra layer and just look at all the bytecode myself, throughout the entire execution of the application. I've already looked at the following questions (...among many many others ;) ):     Preprocessing C# - Detecting Methods     What CLR/.NET bytecode tools exist? as well as several AOP frameworks (although not in great detail, since they don't seem to do quite what I need) and I'm familiar with Mono.Cecil. I appreciate alternative suggestions, but I don't want to introduce the overhead of an AOP framework when what I actually need is access to the bytecode, without all the stuff they add on top to make it more user-friendly (... admittedly very useful stuff when you don't want to go low-level). Thanks :)

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• need some help in Abraham twitteroauth class

  - by diEcho

  Hello All, i m learning how to use twitter from twitter developer link on Authenticating Requests with OAuth page i was debugging my code with given procedure on Sending the user to authorization section there is written that if you are using the callback flow, your oauth_callback should have received back your oauth_token (the same that you sent, your "request token") and a field called the oauth_verifier. You'll need that for the next step. Here's the response I received: oauth_token=8ldIZyxQeVrFZXFOZH5tAwj6vzJYuLQpl0WUEYtWc&oauth_verifier=pDNg57prOHapMbhv25RNf75lVRd6JDsni1AJJIDYoTY my original code is require_once('twitteroauth/twitteroauth.php'); require_once('config.php'); /* Build TwitterOAuth object with client credentials. */ $connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET); /* Get temporary credentials. */ $request_token = $connection->getRequestToken(OAUTH_CALLBACK); /* Save temporary credentials to session. */ $_SESSION['oauth_token'] = $token = $request_token['oauth_token']; $_SESSION['oauth_token_secret'] = $request_token['oauth_token_secret']; /* If last connection failed don't display authorization link. */ switch ($connection->http_code) { case 200: /* Build authorize URL and redirect user to Twitter. */ echo "<br/>Authorize URL:".$url = $connection->getAuthorizeURL($token); //header('Location: ' . $url); break; default: /* Show notification if something went wrong. */ echo 'Could not connect to Twitter. Refresh the page or try again later.'; } and i m getting Authorize URL: https://twitter.com/oauth/authenticate?oauth_token=BHqbrTjsPcyvaAsfDwfU149aAcZjtw45nhLBeG1c i m not getting above URL having oauth_verifier. please tell me from where do i see/debug that url??

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• Django: Odd mark_safe behaviour?

  - by Mark

  I wrote this little function for writing out HTML tags: def html_tag(tag, content=None, close=True, attrs={}): lst = ['<',tag] for key, val in attrs.iteritems(): lst.append(' %s="%s"' % (key, escape_html(val))) if close: if content is None: lst.append(' />') else: lst.extend(['>', content, '</', tag, '>']) else: lst.append('>') return mark_safe(''.join(lst)) Which worked great, but then I read this article on efficient string concatenation (I know it doesn't really matter for this, but I wanted consistency) and decided to update my script: def html_tag(tag, body=None, close=True, attrs={}): s = StringIO() s.write('<%s'%tag) for key, val in attrs.iteritems(): s.write(' %s="%s"' % (key, escape_html(val))) if close: if body is None: s.write(' />') else: s.write('>%s</%s>' % (body, tag)) else: s.write('>') return mark_safe(s.getvalue()) But now my HTML get escaped when I try to render it from my template. Everything else is exactly the same. It works properly if I replace the last line with return mark_safe(unicode(s.getvalue())). I checked the return type of s.getvalue(). It should be a str, just like the first function, so why is this failing?? Also fails with SafeString(s.getvalue()) but succeeds with SafeUnicode(s.getvalue()). I'd also like to point out that I used return mark_safe(s.getvalue()) in a different function with no odd behavior. The "call stack" looks like this: class Input(Widget): def render(self): return html_tag('input', attrs={'type':self.itype, 'id':self.id, 'name':self.name, 'value':self.value, 'class':self.itype}) class Field: def __unicode__(self): return mark_safe(self.widget.render()) And then {{myfield}} is in the template. So it does get mark_safed'd twice, which I thought might have been the problem, but I tried removing that too..... I really have no idea what's causing this, but it's not too hard to work around, so I guess I won't fret about it.

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• Append a dynamically changing watermark to a PDF in SharePoint

  - by ccomet

  This is primarily a question of possibilities more than instructions. I'm a programming consultant working on a WSS project site system for my client. We have a document library in which files are uploaded to go through a complex approval process. With multiple stages in this process, we have an extra field which dictates what the current status of the document is. Now, my client has become enamored with the idea of PDF watermarking. He wants the document (which is already a PDF) to be affixed with a watermark corresponding to the current status, such that with each stage of the approval process the watermark will change. One method, the traditional method for PDF watermarking, of accomplishing this is to have one "clean" copy of the document somewhere hidden on the site, and create a new PDF from it that has the watermark at each stage of the approval process. Since the filename will never change, this new PDF can be uploaded continually to a public library, always overwriting the old version and simulating a "dynamically changing watermark". However, in the various stages there will also be people uploading clean copies with corrections and suggestions, nevermind the complex nature of juggling around two libraries and the fact we double the number of files stored. My client and I agree that this is not a practical path to choose. What we would like to do is be able to "modify" the watermark in a PDF, so that we only have to keep one copy of the file. Unfortunately, from what I've seen, in most cases when you make something like a watermark, which in its nature is supposed to be "unmodifyable", you won't be able to edit it later. So, is it possible to have a part of a PDF which cannot be changed by anyone who downloads the file, but can be changed as part of a workflow or other object model process? Thanks in advance!

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• Java List with Objects - find and replace (delete) entry if Object with certain attribute already ex

  - by Sophomore

  Hi there I've been working all day and I somehow can't get this probably easy task figured out - probably a lack of coffee... I have a synchronizedList where some Objects are being stored. Those objects have a field which is something like an ID. These objects carry information about a user and his current state (simplified). The point is, that I only want one object for each user. So when the state of this user changes, I'd like to remove the "old" entry and store a new one in the List. protected static class Objects{ ... long time; Object ID; ... } ... if (Objects.contains(ID)) { Objects.remove(ID); Objects.add(newObject); } else { Objects.add(newObject); } Obviously this is not the way to go but should illustrate what I'm looking for... Maybe the data structure is not the best for this purpose but any help is welcome!

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• Delphi Editbox causing unexplainable errors...

  - by NeoNMD

  On a form I have 8 edit boxes that I do the exact same thing with. They are arranged in 2 sets of 4, one is Upper and the other is Lower. I kept getting errors clearing all the edit boxes so I went through clearing them 1 by 1 and found that 1 of the edit boxes just didnt work and when I tried to run the program and change that exit box it caused the debugger to jump to a point in the code with the database (even though the edit boxes had nothing to do with the database and they arent in a procedure or stack with a database in it) and say the program has access violation there. So I then removed all mention of that edit box and the code worked perfectly again, so I deleted that edit box, copied and pasted another edit box and left all values the same, then went through my code and copied the code from the other sections and simply renamed it for the new Edit box and it STILL causes an error even though it is entirely new. I cannot figure it out so I ask you all, what the hell? The editbox in question is "Edit1" unit DefinitionCoreV2; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, SQLiteTable3, StdCtrls; type TDefinitionFrm = class(TForm) GrpCompetition: TGroupBox; CmbCompSele: TComboBox; BtnCompetitionAdd: TButton; BtnCompetitionUpdate: TButton; BtnCompetitionRevert: TButton; GrpCompetitionDetails: TGroupBox; LblCompetitionIDTitle: TLabel; EdtCompID: TEdit; LblCompetitionDescriptionTitle: TLabel; EdtCompDesc: TEdit; LblCompetitionNotesTitle: TLabel; EdtCompNote: TEdit; LblCompetitionLocationTitle: TLabel; EdtCompLoca: TEdit; BtnCompetitionDelete: TButton; GrpSection: TGroupBox; LblSectionID: TLabel; LblGender: TLabel; LblAge: TLabel; LblLevel: TLabel; LblWeight: TLabel; LblType: TLabel; LblHeight: TLabel; LblCompetitionID: TLabel; BtnSectionAdd: TButton; EdtSectionID: TEdit; CmbGender: TComboBox; BtnSectionUpdate: TButton; BtnSectionRevert: TButton; CmbAgeRange: TComboBox; CmbLevelRange: TComboBox; CmbType: TComboBox; CmbWeightRange: TComboBox; CmbHeightRange: TComboBox; EdtSectCompetitionID: TEdit; BtnSectionDelete: TButton; GrpSectionDetails: TGroupBox; EdtLowerAge: TEdit; EdtLowerWeight: TEdit; EdtLowerHeight: TEdit; EdtUpperAge: TEdit; EdtUpperLevel: TEdit; EdtUpperWeight: TEdit; EdtUpperHeight: TEdit; LblAgeRule: TLabel; LblLevelRule: TLabel; LblWeightRule: TLabel; LblHeightRule: TLabel; LblCompetitionSelect: TLabel; LblSectionSelect: TLabel; CmbSectSele: TComboBox; Edit1: TEdit; procedure FormCreate(Sender: TObject); procedure BtnCompetitionAddClick(Sender: TObject); procedure CmbCompSeleChange(Sender: TObject); procedure BtnCompetitionUpdateClick(Sender: TObject); procedure BtnCompetitionRevertClick(Sender: TObject); procedure BtnCompetitionDeleteClick(Sender: TObject); procedure CmbSectSeleChange(Sender: TObject); procedure BtnSectionAddClick(Sender: TObject); procedure BtnSectionUpdateClick(Sender: TObject); procedure BtnSectionRevertClick(Sender: TObject); procedure BtnSectionDeleteClick(Sender: TObject); procedure CmbAgeRangeChange(Sender: TObject); procedure CmbLevelRangeChange(Sender: TObject); procedure CmbWeightRangeChange(Sender: TObject); procedure CmbHeightRangeChange(Sender: TObject); private procedure UpdateCmbCompSele; procedure AddComp; procedure RevertComp; procedure AddSect; procedure RevertSect; procedure UpdateCmbSectSele; procedure ClearSect; { Private declarations } public { Public declarations } end; var DefinitionFrm: TDefinitionFrm; implementation {$R *.dfm} procedure TDefinitionFrm.UpdateCmbCompSele; var slDBpath: string; sldb : TSQLiteDatabase; sltb : TSQLiteTable; sCompTitle : string; bNext : boolean; begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try sltb := slDb.GetTable('SELECT * FROM CompetitionTable'); try CmbCompSele.Items.Clear; Repeat begin sCompTitle:=sltb.FieldAsString(sltb.FieldIndex['CompetitionID'])+':'+sltb.FieldAsString(sltb.FieldIndex['Description']); CmbCompSele.Items.Add(sCompTitle); bNext := sltb.Next; end; Until sltb.EOF; finally sltb.Free; end; finally sldb.Free; end; end; procedure TDefinitionFrm.UpdateCmbSectSele; var slDBpath: string; sldb : TSQLiteDatabase; sltb : TSQLiteTable; sSQL : string; sSectTitle : string; bNext : boolean; bLast : boolean; begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try sltb := slDb.GetTable('SELECT * FROM SectionTable WHERE CompetitionID = '+EdtCompID.text); If sltb.RowCount =0 then begin sltb := slDb.GetTable('SELECT * FROM SectionTable'); bLast:= sltb.MoveLast; sSQL := 'INSERT INTO SectionTable(SectionID,CompetitionID,Gender,Type) VALUES ('+IntToStr(sltb.FieldAsInteger(sltb.FieldIndex['SectionID'])+1)+','+EdtCompID.text+',1,1)'; sldb.ExecSQL(sSQL); sltb := slDb.GetTable('SELECT * FROM SectionTable WHERE CompetitionID = '+EdtCompID.text); end; try CmbSectSele.Items.Clear; Repeat begin sSectTitle:=sltb.FieldAsString(sltb.FieldIndex['SectionID'])+':'+sltb.FieldAsString(sltb.FieldIndex['Type'])+':'+sltb.FieldAsString(sltb.FieldIndex['Gender'])+':'+sltb.FieldAsString(sltb.FieldIndex['Age'])+':'+sltb.FieldAsString(sltb.FieldIndex['Level'])+':'+sltb.FieldAsString(sltb.FieldIndex['Weight'])+':'+sltb.FieldAsString(sltb.FieldIndex['Height']); CmbSectSele.Items.Add(sSectTitle); //CmbType.Items.Strings[sltb.FieldAsInteger(sltb.FieldIndex['Type'])] Works but has logic errors bNext := sltb.Next; end; Until sltb.EOF; finally sltb.Free; end; finally sldb.Free; end; end; procedure TDefinitionFrm.AddComp; var slDBpath: string; sSQL : string; sldb : TSQLiteDatabase; sltb : TSQLiteTable; bLast : boolean; begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try sltb := slDb.GetTable('SELECT * FROM CompetitionTable'); try bLast:= sltb.MoveLast; sSQL := 'INSERT INTO CompetitionTable(CompetitionID,Description) VALUES ('+IntToStr(sltb.FieldAsInteger(sltb.FieldIndex['CompetitionID'])+1)+',"New Competition")'; sldb.ExecSQL(sSQL); finally sltb.Free; end; finally sldb.Free; end; UpdateCmbCompSele; end; procedure TDefinitionFrm.AddSect; var slDBpath: string; sSQL : string; sldb : TSQLiteDatabase; sltb : TSQLiteTable; bLast : boolean; begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try sltb := slDb.GetTable('SELECT * FROM SectionTable'); try bLast:= sltb.MoveLast; sSQL := 'INSERT INTO SectionTable(SectionID,CompetitionID,Gender,Type) VALUES ('+IntToStr(sltb.FieldAsInteger(sltb.FieldIndex['SectionID'])+1)+','+EdtCompID.text+',1,1)'; sldb.ExecSQL(sSQL); finally sltb.Free; end; finally sldb.Free; end; UpdateCmbSectSele; end; procedure TDefinitionFrm.RevertComp; var slDBpath: string; sldb : TSQLiteDatabase; sltb : TSQLiteTable; iID : integer; begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try If CmbCompSele.Text <> '' then begin iID := StrToInt(Copy(CmbCompSele.Text,0,Pos(':',CmbCompSele.Text)-1)); sltb := slDb.GetTable('SELECT * FROM CompetitionTable WHERE CompetitionID='+IntToStr(iID))//ItemIndex starts at 0, CompID at 1 end else sltb := slDb.GetTable('SELECT * FROM CompetitionTable WHERE CompetitionID=1'); try EdtCompID.Text:=sltb.FieldAsString(sltb.FieldIndex['CompetitionID']); EdtCompLoca.Text:=sltb.FieldAsString(sltb.FieldIndex['Location']); EdtCompDesc.Text:=sltb.FieldAsString(sltb.FieldIndex['Description']); EdtCompNote.Text:=sltb.FieldAsString(sltb.FieldIndex['Notes']); finally sltb.Free; end; finally sldb.Free; end; end; procedure TDefinitionFrm.RevertSect; var slDBpath: string; sldb : TSQLiteDatabase; sltb : TSQLiteTable; iID : integer; sTemp : string; begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try If CmbCompSele.Text <> '' then begin iID := StrToInt(Copy(CmbSectSele.Text,0,Pos(':',CmbSectSele.Text)-1)); sltb := slDb.GetTable('SELECT * FROM SectionTable WHERE SectionID='+IntToStr(iID));//ItemIndex starts at 0, CompID at 1 end else sltb := slDb.GetTable('SELECT * FROM SectionTable WHERE CompetitionID='+EdtCompID.Text); try EdtSectionID.Text:=sltb.FieldAsString(sltb.FieldIndex['SectionID']); EdtSectCompetitionID.Text:=sltb.FieldAsString(sltb.FieldIndex['CompetitionID']); Case sltb.FieldAsInteger(sltb.FieldIndex['Type']) of 1 : CmbType.ItemIndex:=0; 2 : CmbType.ItemIndex:=0; 3 : CmbType.ItemIndex:=1; 4 : CmbType.ItemIndex:=1; end; Case sltb.FieldAsInteger(sltb.FieldIndex['Gender']) of 1 : CmbGender.ItemIndex:=0; 2 : CmbGender.ItemIndex:=1; 3 : CmbGender.ItemIndex:=2; end; sTemp := sltb.FieldAsString(sltb.FieldIndex['Age']); if sTemp <> '' then begin //Decode end else begin LblAgeRule.Hide; EdtLowerAge.Text :=''; EdtLowerAge.Hide; EdtUpperAge.Text :=''; EdtUpperAge.Hide; end; sTemp := sltb.FieldAsString(sltb.FieldIndex['Level']); if sTemp <> '' then begin //Decode end else begin LblLevelRule.Hide; Edit1.Text :=''; Edit1.Hide; EdtUpperLevel.Text :=''; EdtUpperLevel.Hide; end; sTemp := sltb.FieldAsString(sltb.FieldIndex['Weight']); if sTemp <> '' then begin //Decode end else begin LblWeightRule.Hide; EdtLowerWeight.Text :=''; EdtLowerWeight.Hide; EdtUpperWeight.Text :=''; EdtUpperWeight.Hide; end; sTemp := sltb.FieldAsString(sltb.FieldIndex['Height']); if sTemp <> '' then begin //Decode end else begin LblHeightRule.Hide; EdtLowerHeight.Text :=''; EdtLowerHeight.Hide; EdtUpperHeight.Text :=''; EdtUpperHeight.Hide; end; finally sltb.Free; end; finally sldb.Free; end; end; procedure TDefinitionFrm.BtnCompetitionAddClick(Sender: TObject); begin AddComp end; procedure TDefinitionFrm.ClearSect; begin CmbSectSele.Clear; EdtSectionID.Text:=''; EdtSectCompetitionID.Text:=''; CmbType.Clear; CmbGender.Clear; CmbAgeRange.Clear; EdtLowerAge.Text:=''; EdtUpperAge.Text:=''; CmbLevelRange.Clear; Edit1.Text:=''; EdtUpperLevel.Text:=''; CmbWeightRange.Clear; EdtLowerWeight.Text:=''; EdtUpperWeight.Text:=''; CmbHeightRange.Clear; EdtLowerHeight.Text:=''; EdtUpperHeight.Text:=''; end; procedure TDefinitionFrm.CmbCompSeleChange(Sender: TObject); begin If CmbCompSele.ItemIndex <> -1 then begin RevertComp; GrpSection.Enabled:=True; CmbSectSele.Clear; ClearSect; UpdateCmbSectSele; end; end; procedure TDefinitionFrm.BtnCompetitionUpdateClick(Sender: TObject); var slDBpath: string; sSQL : string; sldb : TSQLiteDatabase; begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try sSQL:= 'UPDATE CompetitionTable SET Description="'+EdtCompDesc.Text+'",Location="'+EdtCompLoca.Text+'",Notes="'+EdtCompNote.Text+'" WHERE CompetitionID ="'+EdtCompID.Text+'";'; sldb.ExecSQL(sSQL); finally sldb.Free; end; end; procedure TDefinitionFrm.BtnCompetitionRevertClick(Sender: TObject); begin RevertComp; end; procedure TDefinitionFrm.BtnCompetitionDeleteClick(Sender: TObject); var slDBpath: string; sSQL : string; sldb : TSQLiteDatabase; iID : integer; begin If CmbCompSele.Text <> '' then begin If (CmbCompSele.Text[1] ='1') and (CmbCompSele.Text[2] =':') then begin MessageDlg('Deleting the last record is a very bad idea :/',mtInformation,[mbOK],0); end else begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try iID := StrToInt(Copy(CmbCompSele.Text,0,Pos(':',CmbCompSele.Text)-1)); sSQL:= 'DELETE FROM SectionTable WHERE CompetitionID='+IntToStr(iID)+';'; sldb.ExecSQL(sSQL); sSQL:= 'DELETE FROM CompetitionTable WHERE CompetitionID='+IntToStr(iID)+';'; sldb.ExecSQL(sSQL); finally sldb.Free; end; CmbCompSele.ItemIndex:=0; UpdateCmbCompSele; RevertComp; CmbCompSele.Text:='Select Competition'; end; end; end; procedure TDefinitionFrm.FormCreate(Sender: TObject); begin UpdateCmbCompSele; end; procedure TDefinitionFrm.CmbSectSeleChange(Sender: TObject); begin RevertSect; end; procedure TDefinitionFrm.BtnSectionAddClick(Sender: TObject); begin AddSect; end; procedure TDefinitionFrm.BtnSectionUpdateClick(Sender: TObject); //change fields values var slDBpath: string; sSQL : string; sldb : TSQLiteDatabase; iTypeCode : integer; iGenderCode : integer; sAgeStr, sLevelStr, sWeightStr, sHeightStr : string; begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try If CmbType.Text='Fighting' then iTypeCode := 1 else iTypeCode := 3; If CmbGender.Text='Male' then iGenderCode := 1 else if CmbGender.Text='Female' then iGenderCode := 2 else iGenderCode := 3; Case CmbAgeRange.ItemIndex of 0:sAgeStr := 'o-'+EdtLowerAge.Text; 1:sAgeStr := 'u-'+EdtLowerAge.Text; 2:sAgeStr := EdtLowerAge.Text+'-'+EdtUpperAge.Text; end; Case CmbLevelRange.ItemIndex of 0:sLevelStr := 'o-'+Edit1.Text; 1:sLevelStr := 'u-'+Edit1.Text; 2:sLevelStr := Edit1.Text+'-'+EdtUpperLevel.Text; end; Case CmbWeightRange.ItemIndex of 0:sWeightStr := 'o-'+EdtLowerWeight.Text; 1:sWeightStr := 'u-'+EdtLowerWeight.Text; 2:sWeightStr := EdtLowerWeight.Text+'-'+EdtUpperWeight.Text; end; Case CmbHeightRange.ItemIndex of 0:sHeightStr := 'o-'+EdtLowerHeight.Text; 1:sHeightStr := 'u-'+EdtLowerHeight.Text; 2:sHeightStr := EdtLowerHeight.Text+'-'+EdtUpperHeight.Text; end; sSQL:= 'UPDATE SectionTable SET Type="'+IntToStr(iTypeCode)+'",Gender="'+IntToStr(iGenderCode)+'" WHERE SectionID ="'+EdtSectionID.Text+'";'; sldb.ExecSQL(sSQL); finally sldb.Free; end; end; procedure TDefinitionFrm.BtnSectionRevertClick(Sender: TObject); begin RevertSect; end; procedure TDefinitionFrm.BtnSectionDeleteClick(Sender: TObject); var slDBpath: string; sSQL : string; sldb : TSQLiteDatabase; begin If CmbSectSele.Text[1] ='1' then begin MessageDlg('Deleting the last record is a very bad idea :/',mtInformation,[mbOK],0); end else begin slDBPath := ExtractFilepath(application.exename)+ 'Competitions.db'; if not FileExists(slDBPath) then begin MessageDlg('Competitions.db does not exist.',mtInformation,[mbOK],0); exit; end; sldb := TSQLiteDatabase.Create(slDBPath); try sSQL:= 'DELETE FROM SectionTable WHERE SectionID='+CmbSectSele.Text[1]+';'; sldb.ExecSQL(sSQL); finally sldb.Free; end; CmbSectSele.ItemIndex:=0; UpdateCmbSectSele; RevertSect; CmbSectSele.Text:='Select Competition'; end; end; procedure TDefinitionFrm.CmbAgeRangeChange(Sender: TObject); begin Case CmbAgeRange.ItemIndex of 0: begin EdtLowerAge.Show; LblAgeRule.Caption:='Over and including'; LblAgeRule.Show; EdtUpperAge.Hide; end; 1: begin EdtLowerAge.Show; LblAgeRule.Caption:='Under and including'; LblAgeRule.Show; EdtUpperAge.Hide; end; 2: begin EdtLowerAge.Show; LblAgeRule.Caption:='LblAgeRule'; LblAgeRule.Hide; EdtUpperAge.Show; end; end; end; procedure TDefinitionFrm.CmbLevelRangeChange(Sender: TObject); begin Case CmbLevelRange.ItemIndex of 0: begin Edit1.Show; LblLevelRule.Caption:='Over and including'; LblLevelRule.Show; EdtUpperLevel.Hide; end; 1: begin Edit1.Show; LblLevelRule.Caption:='Under and including'; LblLevelRule.Show; EdtUpperLevel.Hide; end; 2: begin Edit1.Show; LblLevelRule.Caption:='LblLevelRule'; LblLevelRule.Hide; EdtUpperLevel.Show; end; end; end; procedure TDefinitionFrm.CmbWeightRangeChange(Sender: TObject); begin Case CmbWeightRange.ItemIndex of 0: begin EdtLowerWeight.Show; LblWeightRule.Caption:='Over and including'; LblWeightRule.Show; EdtUpperWeight.Hide; end; 1: begin EdtLowerWeight.Show; LblWeightRule.Caption:='Under and including'; LblWeightRule.Show; EdtUpperWeight.Hide; end; 2: begin EdtLowerWeight.Show; LblWeightRule.Caption:='LblWeightRule'; LblWeightRule.Hide; EdtUpperWeight.Show; end; end; end; procedure TDefinitionFrm.CmbHeightRangeChange(Sender: TObject); begin Case CmbHeightRange.ItemIndex of 0: begin EdtLowerHeight.Show; LblHeightRule.Caption:='Over and including'; LblHeightRule.Show; EdtUpperHeight.Hide; end; 1: begin EdtLowerHeight.Show; LblHeightRule.Caption:='Under and including'; LblHeightRule.Show; EdtUpperHeight.Hide; end; 2: begin EdtLowerHeight.Show; LblHeightRule.Caption:='LblHeightRule'; LblHeightRule.Hide; EdtUpperHeight.Show; end; end; end; end.

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• How to delete a large cookie that causes Apache to 400

  - by jakemcgraw

  I've come across an issue where a web application has managed to create a cookie on the client, which, when submitted by the client to Apache, causes Apache to return the following: HTTP/1.1 400 Bad Request Date: Mon, 08 Mar 2010 21:21:21 GMT Server: Apache/2.2.3 (Red Hat) Content-Length: 7274 Connection: close Content-Type: text/html; charset=iso-8859-1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>400 Bad Request</title> </head><body> <h1>Bad Request</h1> <p>Your browser sent a request that this server could not understand.<br /> Size of a request header field exceeds server limit.<br /> <pre> Cookie: ::: A REALLY LONG COOKIE ::: </pre> </p> <hr> <address>Apache/2.2.3 (Red Hat) Server at www.foobar.com Port 80</address> </body></html> After looking into the issue, it would appear that the web application has managed to create a really long cookie, over 7000 characters. Now, don't ask me how the web application was able to do this, I was under the impression browsers were supposed to prevent this from happening. I've managed to come up with a solution to prevent the cookies from growing out of control again. The issue I'm trying to tackle is how do I reset the large cookie on the client if every time the client tries to submit a request to Apache, Apache returns a 400 client error? I've tried using the ErrorDocument directive, but it appears that Apache bails on the request before reaching any custom error handling.

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• Reliable strtotime() result for different languages

  - by Maksee

  There was always a strange bug in Joomla when adding new article with back-end displayed with a language other than English (for me it's Russian). The field "Finish Publishing" started to be current date instead of "Never" equivalent in Russian. For a site in php4 finally found that strtotime function returns different results for arbitrary words. For "Never" it always -1 and joomla relies on this result in the JDate implementation. But in other case it sometimes returns a valid date. For russian translation of Never (???????) it is the case, but also for single "N" it is the case, so if one decided to change the string to some other he or she would face the same issue. So the code below <?php echo "Res:".strtotime("N")."<br>"; echo "Res:".strtotime("Nev")."<br>"; echo "Res:".strtotime("Neve")."<br>"; echo "Res:".strtotime("Never")."<br>"; ?> Outputs: Res:1271120400 Res:-1 Res:-1 Res:-1 So what are the solutions would be in this case? I would like not to write language-specific date.php handler, but to modify date method of JDate class, but what are language-neutral changes would be in order to detect invalid string. Thank you

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• Adding titles and descriptions to images in Refinerycms-Portfolio

  - by John Deely

  I'm using the Refinery content management system with a the Portfolio plugin see http://github.com/resolve/refinerycms I wanted to create a title and description for images uploaded to Refinery using Refinerycms-Portfolio so far I have done the following; added the columns to the images table $script/generate migration AddTitleToImages title:string $script/generate migration AddBodyToImages body:text $rake db:migrate modified the field div in this file, * highlighted vendor/plugins/images/app/views/admin/images/_form.html.erb Use current image or, replace it with this one... ***** ***** ***** ***** "wymeditor", :rows = 7 % Added these lines to the main image partial in vendor/plugins/refinerycms-portolio/app/views/portfolio/ _main_image.html.erb <%= @image.body % This works in the back-end except for a few visual bugs. The problem with this is when i click through the thumbnails in the front-end the titles and descriptions keep stacking on top of the previous titles and descriptions. The main image changes fine, but instead of refreshing the title and description, it adds the new one above the previous titles and descriptions. How can i stop this repetition so that only one title and description will show at a time? I'm new to Rails and I am using Rails-2.3.5 and I suspect this can be solved using Java Script thanks in advance, John

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• Getting a binary file from resource in C#

  - by Jesse Knott

  Hello, I am having a bit of a problem, I am trying to get a PDF as a resource in my application. At this point I have a fillable PDF that I have been able to store as a file next to the binary, but now I am trying to embed the PDF as a resource in the binary. byte[] buffer; try { s = typeof(BattleTracker).Assembly.GetManifestResourceStream("libReports.Resources.DAForm1594.pdf"); buffer = new byte[s.Length]; int read = 0; do { read = s.Read(buffer, read, 32768); } while (read > 0); } catch (Exception e) { throw new Exception("Error: could not import report:", e); } // read existing PDF document PdfReader r = new PdfReader( // optimize memory usage buffer, null ); Every time I run the code I get an error saying "Rebuild trailer not found. Original Error: PDF startxref not found" When I was just opening the file via a path to the static file in my directory it worked fine. I have tried using different encodings UTF-8, UTF-32, UTF-7, ASCII, etc etc.... As a side note I had the same problem with getting a Powerpoint file as a resource, I was finally able to fix that problem by converting the Powerpoint to xml and using that. I have considered doing the same for the PDF but I am referencing elements by field name which does not seem to work with XML PDFs. Can anyone help me out with this? Thanks in advance!

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• SqlDataAdaptor why get a different query

  - by Murat

  Hi All, I have a database reader class. But i want to use this class, sometimes SqlDataAdaptor.Fill() method get another query to Datatable. I look at Query in SqlCommand Instance and my query is correct but returning values from different table? What is the problem? This My Code public static DataTable GetLatestRecords(string TableName, string FilterFieldName, int RecordCount, params DBFieldAndValue[] FilterFields) { DataTable DT = new DataTable(); Type ClassType = typeof(T); string SelectString = string.Format("SELECT TOP ({0}) * FROM {1}", RecordCount, TableName); if (FilterFields.Length > 0) { SelectString += " WHERE 1 = 1 "; for (int index = 0; index < FilterFields.Length; index++) SelectString += FilterFields[index].ToString(index); } SelectString += string.Format(" ORDER BY {0} DESC", FilterFieldName); try { SqlConnection Connection = GetConnection<T>(); SqlCommand Command = new SqlCommand(SelectString, Connection); for (int index = 0; index < FilterFields.Length; index++) Command.Parameters.AddWithValue("@" + FilterFields[index].Field + "_" + index, FilterFields[index].Value); if (Connection.State == ConnectionState.Closed) Connection.Open(); Command.CommandText = SelectString; SqlDataAdapter DA = new SqlDataAdapter(Command); DT.Dispose(); DT = new DataTable(); DA.Fill(DT); if (Connection.State == ConnectionState.Open) Connection.Close(); } catch (Exception ex) { WriteLogStatic(ex.Message); throw new Exception(@"Veritabani islemleri sirasinda hata olustu!\nAyrintilar 'C:\Temp' dizini altindadir.\n" + ex.Message); } return DT; }

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• Combine 3 select fields and validate as one in my User model in ruby on rails 3

  - by Psychonetics

  Ok I have 3 select boxes for selecting date of birth. I have constants setup in my User model to provide months, years etc.. Anyway I can successfully validate these select boxes separately. What I want to do is combine the :day, :month and :year and store in :birthday and validate the whole date as one so I can return 1 error rather than 3 separate ones. Also doing this will make it easier to store the validated date in my birthday field in my database. Part of my form <td> <%= f.input :day, :required => false, :label => "Birthday: " , :prompt => "Day", :collection => User::DAYS %></td> <td> <%= f.input :month, :label => false, :prompt => "Month", :collection => User::MONTHS %> </td> <td> <%= f.input :year, :label => false, :prompt => "Year", :collection => User::YEAR_RANGE %> </td> Part of User model MONTHS = ["January", 1], ["February", 2], ["March", 3], ["April", 4], ["May", 5], ["June", 6], ["July", 7], ["August", 8], ["September", 9], ["October", 10], ["November", 11], ["December", 12] # finish this DAYS = 1..31 # finish this START_YEAR = Time.now.year - 106 END_YEAR = Time.now.year YEAR_RANGE = START_YEAR..END_YEAR class User < ActiveRecord::Base attr_accessor :day, :month, :year validates_presence_of :day, :message = 'What day in a month was you born?' validates_presence_of :month, :message = 'What month was you born?' validates_presence_of :year, :message = 'What is your year of birth?' end

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• Violating 1st normal form, is it okay for my purpose?

  - by Nick

  So I'm making a running log, and I have the workouts stored as entries in a table. For each workout, the user can add intervals (which consist of a time and a distance), so I have an array like this: [workout] => [description] => [comments] => ... [intervals] => [0] => [distance] => 200m [time] => 32 [1] => [distance] => 400m [time] => 65 ... I'm really tempted to throw the "intervals" array into serialize() or json_encode() and put it in an "intervals" field in my table, however this violates the principles of good database design (which, incidentally, I know hardly anything about). Is there any disadvantage to doing this? I never plan on querying my table based on the contents of "intervals". Creating a separate table just for intervals seems like a lot of unnecessary complexity, so if anyone with more experience has had a situation like this, what route did you take and how did it work out?

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• Math on Django Templates

  - by Leandro Abilio

  Here's another question about Django. I have this code: views.py cursor = connections['cdr'].cursor() calls = cursor.execute("SELECT * FROM cdr where calldate > '%s'" %(start_date)) result = [SQLRow(cursor, r) for r in cursor.fetchall()] return render_to_response("cdr_user.html", {'calls':result }, context_instance=RequestContext(request)) I use a MySQL query like that because the database is not part of a django project. My cdr table has a field called duration, I need to divide that by 60 and multiply the result by a float number like 0.16. Is there a way to multiply this values using the template tags? If not, is there a good way to do it in my views? My template is like this: {% for call in calls %} <tr class="{% cycle 'odd' 'even' %}"><h3> <td valign="middle" align="center"><h3>{{ call.calldate }}</h3></td> <td valign="middle" align="center"><h3>{{ call.disposition }}</h3></td> <td valign="middle" align="center"><h3>{{ call.dst }}</h3></td> <td valign="middle" align="center"><h3>{{ call.billsec }}</h3></td> <td valign="middle" align="center">{{ (call.billsec/60)*0.16 }}</td></h3> </tr> {% endfor %} The last is where I need to show the value, I know the "(call.billsec/60)*0.16" is impossible to be done there. I wrote it just to represent what I need to show.

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• Defining jUnit Test cases Correctly

  - by Epitaph

  I am new to Unit Testing and therefore wanted to do some practical exercise to get familiar with the jUnit framework. I created a program that implements a String multiplier public String multiply(String number1, String number2) In order to test the multiplier method, I created a test suite consisting of the following test cases (with all the needed integer parsing, etc) @Test public class MultiplierTest { Multiplier multiplier = new Multiplier(); // Test for 2 positive integers assertEquals("Result", 5, multiplier.multiply("5", "1")); // Test for 1 positive integer and 0 assertEquals("Result", 0, multiplier.multiply("5", "0")); // Test for 1 positive and 1 negative integer assertEquals("Result", -1, multiplier.multiply("-1", "1")); // Test for 2 negative integers assertEquals("Result", 10, multiplier.multiply("-5", "-2")); // Test for 1 positive integer and 1 non number assertEquals("Result", , multiplier.multiply("x", "1")); // Test for 1 positive integer and 1 empty field assertEquals("Result", , multiplier.multiply("5", "")); // Test for 2 empty fields assertEquals("Result", , multiplier.multiply("", "")); In a similar fashion, I can create test cases involving boundary cases (considering numbers are int values) or even imaginary values. 1) But, what should be the expected value for the last 3 test cases above? (a special number indicating error?) 2) What additional test cases did I miss? 3) Is assertEquals() method enough for testing the multiplier method or do I need other methods like assertTrue(), assertFalse(), assertSame() etc 4) Is this the RIGHT way to go about developing test cases? How am I "exactly" benefiting from this exercise? 5)What should be the ideal way to test the multiplier method? I am pretty clueless here. If anyone can help answer these queries I'd greatly appreciate it. Thank you.

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