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• Shallow Copy in Java

  - by Vilius

  Hello there! I already know, what a shallow copy is, but I'm not able to impliment it. Here's a short example. public class Shallow { String name; int number; public Shallow (String name, int number) { this.name = name; this.number = number; } } Test the implementation ... public class ShallowTest { public static void main (String[] args) { Shallow shallow = new Shallow("Shallow", 123); Shallow shallowClone = new Shallow(shallow); shallowClone.name = 'Peter'; shallowClone.number = 321; System.out.println(shallow.name + " - " + shallow.number); } } As I purpose, just the reference of the non primitive datatype String would be copied, so that by calling "shallowClone.name = 'Peter';" I would also change the name of "shallow". Am I right? But somehow, it just does not want to work ....

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• PHP: SimpleXML and Arrays

  - by acemasta

  When I run this code: foreach($xml->movie as $movie) { if(isset($movie->photos)) { foreach ($movie->photos as $photo) { echo $photo."&nbsp;"; } echo "<hr/>"; } } I get nice output of the actual data, e.g. a row looks like 06397001.jpg 06397002.jpg 06397003.jpg 06397004.jpg 06397005.jpg But when I throw it in an array, it includes all the SimpleXML wrapper tags and the jpgs are not at the root of the array. code: foreach($xml->movie as $movie) { if(isset($movie->photos)) { $photos = array(); foreach ($movie->photos as $photo) { $photos[] = $photo; } } else $photos = ""; var_dump($photos); echo "<hr />"; } e.g. same row looks like array(5) { [0]= object(SimpleXMLElement)#11 (1) { [0]= string(12) "06397001.jpg" } [1]= object(SimpleXMLElement)#12 (1) { [0]= string(12) "06397002.jpg" } [2]= object(SimpleXMLElement)#13 (1) { [0]= string(12) "06397003.jpg" } [3]= object(SimpleXMLElement)#14 (1) { [0]= string(12) "06397004.jpg" } [4]= object(SimpleXMLElement)#15 (1) { [0]= string(12) "06397005.jpg" } } Why is this happening/how can I remove this so I just get an array of the photos at root level like when I echo it? Thanks, sorry for the single line code formatting; was messing up when I tried to paste directly with line breaks.

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• how to read querystring value via Managed Bean in jsf1.1

  - by johnbritto

  Hi How to read query string value via managed bean in jsf1.1

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• Why won't C# accept a (seemingly) perfectly good Sql Server CE Query?

  - by VoidKing

  By perfectly good sql query, I mean to say that, inside WebMatrix, if I execute the following query, it works to perfection: SELECT page AS location, (len(page) - len(replace(UPPER(page), UPPER('o'), ''))) / len('o') AS occurences, 'pageSettings' AS tableName FROM PageSettings WHERE page LIKE '%o%' UNION SELECT pageTitle AS location, (len(pageTitle) - len(replace(UPPER(pageTitle), UPPER('o'), ''))) / len('o') AS occurences, 'ExternalSecondaryPages' AS tableName FROM ExternalSecondaryPages WHERE pageTitle LIKE '%o%' UNION SELECT eventTitle AS location, (len(eventTitle) - len(replace(UPPER(eventTitle), UPPER('o'), ''))) / len('o') AS occurences, 'MainStreetEvents' AS tableName FROM MainStreetEvents WHERE eventTitle LIKE '%o%' Here i am using 'o' as a static search string to search upon. No problem, but not exeactly very dynamic. Now, when I write this query as a string in C# and as I think it should be (and even as I have done before) I get a server-side error indicating that the string was not in the correct format. Here is a pic of that error: And (although I am only testing the output, should I get it to quit erring), here is the actual C# (i.e., the .cshtml) page that queries the database: @{ Layout = "~/Layouts/_secondaryMainLayout.cshtml"; var db = Database.Open("Content"); string searchText = Request.Unvalidated["searchText"]; string selectQueryString = "SELECT page AS location, (len(page) - len(replace(UPPER(page), UPPER(@0), ''))) / len(@0) AS occurences, 'pageSettings' AS tableName FROM PageSettings WHERE page LIKE '%' + @0 + '%' "; selectQueryString += "UNION "; selectQueryString += "SELECT pageTitle AS location, (len(pageTitle) - len(replace(UPPER(pageTitle), UPPER(@0), ''))) / len(@0) AS occurences, 'ExternalSecondaryPages' AS tableName FROM ExternalSecondaryPages WHERE pageTitle LIKE '%' + @0 + '%' "; selectQueryString += "UNION "; selectQueryString += "SELECT eventTitle AS location, (len(eventTitle) - len(replace(UPPER(eventTitle), UPPER(@0), ''))) / len(@0) AS occurences, 'MainStreetEvents' AS tableName FROM MainStreetEvents WHERE eventTitle LIKE '%' + @0 + '%'"; @:beginning <br/> foreach (var row in db.Query(selectQueryString, searchText)) { @:entry @:@row.location &nbsp; @:@row.occurences &nbsp; @:@row.tableName <br/> } } Since it is erring on the foreach (var row in db.Query(selectQueryString, searchText)) line, that heavily suggests that something is wrong with my query, however, everything seems right to me about the syntax here and it even executes to perfection if I query the database (mind you, un-parameterized) directly. Logically, I would assume that I have erred somewhere with the syntax involved in parameterizing this query, however, my double and triple checking (as well as, my past experience at doing this) insists that everything looks fine here. Have I messed up the syntax involved with parameterizing this query, or is something else at play here that I am overlooking? I know I can tell you, for sure, as it has been previously tested, that the value I am getting from the query string is, indeed, what I would expect it to be, but as there really isn't much else on the .cshtml page yet, that is about all I can tell you.

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• How to separate comma separeted data from csv file?

  - by Rahul

  I have opened a csv file and I want to sort each string which is comma separeted and are in same line: ex:: file : name,sal,dept tom,10000,it o/p :: each string in string variable I have a file which is already open, so I can not use "open" API, I have to use "csv.reader" which have to read one line at a time.

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• ASP.NET MVC Membership, Get new UserID

  - by Vishal Bharakhda

  I am trying to register a new user and also understand how to get the new userID so i can start creating my own user tables with a userID mapping to the asp.net membership user table. Below is my code: [AcceptVerbs(HttpVerbs.Post)] public ActionResult Register(string userName, string email, string position, string password, string confirmPassword) { ViewData["PasswordLength"] = MembershipService.MinPasswordLength; ViewData["position"] = new SelectList(GetDeveloperPositionList()); if (ValidateRegistration(userName, email, position, password, confirmPassword)) { // Attempt to register the user MembershipCreateStatus createStatus = MembershipService.CreateUser(userName, password, email); if (createStatus == MembershipCreateStatus.Success) { FormsAuth.SignIn(userName, false /* createPersistentCookie */); return RedirectToAction("Index", "Home"); } else { ModelState.AddModelError("_FORM", ErrorCodeToString(createStatus)); } } // If we got this far, something failed, redisplay form return View(); } I've done some research and many sites inform me to use Membership.GetUser().ProviderUserKey; but this throws an error as Membership is NULL. I placed this line of code just above "return RedirectToAction("Index", "Home");" within the if statement. Please can someone advise me on this... Thanks in advance

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• Generic Type Parameter constraints in C# .NET

  - by activwerx

  Consider the following Generic class: public class Custom<T> where T : string { } This produces the following error: 'string' is not a valid constraint. A type used as a constraint must be an interface, a non-sealed class or a type parameter. Is there another way to constrain which types my generic class can use? Also, can I constrain to multiple types? E.G. T can only be string, int or byte

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• SQLAlchemy introspection of ORM classes/objects

  - by Adam Batkin

  I am looking for a way to introspect SQLAlchemy ORM classes/entities to determine the types and other constraints (like maximum lengths) of an entity's properties. For example, if I have a declarative class: class User(Base): __tablename__ = "USER_TABLE" id = sa.Column(sa.types.Integer, primary_key=True) fullname = sa.Column(sa.types.String(100)) username = sa.Column(sa.types.String(20), nullable=False) password = sa.Column(sa.types.String(20), nullable=False) created_timestamp = sa.Column(sa.types.DateTime, nullable=False) I would want to be able to find out that the 'fullname' field should be a String with a maximum length of 100, and is nullable. And the 'created_timestamp' field is a DateTime and is not nullable.

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• WCF REST adding data using POST or PUT 400 Bad Request

  - by user55474

  HI How do i add data using wcf rest architecture. I dont want to use the channelfactory to call my method. Something similar to the webrequest and webresponse used for GET. Something similar to the ajax WebServiceProxy restInvoke Or do i always have to use the Webchannelfactory implementation I am getting a 400 BAD request by using the following Dim url As String = "http://localhost:4475/Service.svc/Entity/Add" Dim req As WebRequest = WebRequest.Create(url) req.Method = "POST" req.ContentType = "application/xml; charset=utf-8" req.Timeout = 30000 req.Headers.Add("SOAPAction", url) Dim xEle As XElement xEle = <Entity xmlns:i="http://www.w3.org/2001/XMLSchema-instance"> <Name>Entity1</Name> </Entity> Dim sXML As String = xEle .Value req.ContentLength = sXML.Length Dim sw As New System.IO.StreamWriter(req.GetRequestStream()) sw.Write(sXML) sw.Close() Dim res as HttpWebResponse = req.GetResponse() Sercice Contract is as follows <OperationContract()> _ <WebInvoke(Method:="PUT", UriTemplate:="Entity/Add")> _ Function AddEntity(ByVal e1 As Entity) DataContract is as follows <Serializable()> _ <DataContract()> _ Public Class Entity private m_Name as String <DataMember()> _ Public Property Name() As String Get Return m_Name End Get Set(ByVal value As String) m_Name = value End Set End Property End Class thanks

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• Controls.remove() method not working in asp.net

  - by user279521

  I have a web app where the user can create dynamic textboxes at run time. When the user clicks SUBMIT, the form sends data to the database and I want remove the dynamic controls. The controls are created in the following code: Table tb = new Table(); tb.ID = "tbl"; for (i = 0; i < myCount; i += 1) { TableRow tr = new TableRow(); TextBox txtEmplName = new TextBox(); TextBox txtEmplEmail = new TextBox(); TextBox txtEmplPhone = new TextBox(); TextBox txtEmplPosition = new TextBox(); TextBox txtEmplOfficeID = new TextBox(); txtEmplName.ID = "txtEmplName" + i.ToString(); txtEmplEmail.ID = "txtEmplEmail" + i.ToString(); txtEmplPhone.ID = "txtEmplPhone" + i.ToString(); txtEmplPosition.ID = "txtEmplPosition" + i.ToString(); txtEmplOfficeID.ID = "txtEmplOfficeID" + i.ToString(); tr.Cells.Add(tc); tb.Rows.Add(tr); } Panel1.Controls.Add(tb); The Remove section of the code is: Table t = (Table)Page.FindControl("Panel1").FindControl("tbl"); foreach (TableRow tr in t.Rows) { for (i = 1; i < myCount; i += 1) { string txtEmplName = "txtEmplName" + i; tr.Controls.Remove(t.FindControl(txtEmplName)); string txtEmplEmail = "txtEmplEmail" + i; tr.Controls.Remove(t.FindControl(txtEmplEmail)); string txtEmplPhone = "txtEmplPhone" + i; tr.Controls.Remove(t.FindControl(txtEmplPhone)); string txtEmplPosition = "txtEmplPosition" + i; tr.Controls.Remove(t.FindControl(txtEmplPosition)); string txtEmplOfficeID = "txtEmplOfficeID" + i; tr.Controls.Remove(t.FindControl(txtEmplOfficeID)); } } However, the textboxes are still visible. Any ideas?

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• Access Violation When Accessing an STL Object Through A Pointer or Reference In A Different DLL or E

  - by Yan Cheng CHEOK

  I experience the following problem while using legacy VC6. I just cann't switch to modern compiler, as I am working on a legacy code base. http://support.microsoft.com/kb/172396 Since there are no way to export map, my planned workaround is using static linking instead of dynamic linking. I was wondering whether you all had encountered the similar situation? What is your workaround for this? Another workaround is to create wrapper class around the stl map, to ensure creation and accessing stl map, are within the same DLL space. Note that, fun0, which uses wrapper class will just work fine. fun1 will crash. Here is the code example : // main.cpp. Compiled it as exe. #pragma warning (disable : 4786) #include <map> #include <string> template <class K, class V> class __declspec(dllimport) map_wrapper { public: map_wrapper(); ~map_wrapper(); map_wrapper(const map_wrapper&); map_wrapper& operator=(const map_wrapper&); V& operator[](const K&); const V& operator[](const K&) const; const V& get(const K&) const; void put(const K&, const V&); int size() const; private: std::map<K, V> *m; }; __declspec(dllimport) void fun0(map_wrapper<std::string, int>& m); __declspec(dllimport) void fun1(std::map<std::string, int>& m); int main () { map_wrapper<std::string, int> m0; std::map<std::string, int> m1; m0["hello"] = 888; m1["hello"] = 888; // Safe. The we create std::map and access map both in dll space. fun0(m0); // Crash! The we create std::map in exe space, and access map in dll space. fun1(m1); return 0; } // dll.cpp. Compiled it as dynamic dll. #pragma warning (disable : 4786) #include <map> #include <string> #include <iostream> /* In map_wrapper.h */ template <class K, class V> class __declspec(dllexport) map_wrapper { public: map_wrapper(); ~map_wrapper(); map_wrapper(const map_wrapper&); map_wrapper& operator=(const map_wrapper&); V& operator[](const K&); const V& operator[](const K&) const; const V& get(const K&) const; void put(const K&, const V&); int size() const; private: std::map<K, V> *m; }; /* End */ /* In map_wrapper.cpp */ template <class K, class V> map_wrapper<K, V>::map_wrapper() : m(new std::map<K, V>()) { } template <class K, class V> map_wrapper<K, V>::~map_wrapper() { delete m; } template <class K, class V> map_wrapper<K, V>::map_wrapper(const map_wrapper<K, V>& map) : m(new std::map<K, V>(*(map.m))) { } template <class K, class V> map_wrapper<K, V>& map_wrapper<K, V>::operator=(const map_wrapper<K, V>& map) { std::map<K, V>* tmp = this->m; this->m = new std::map<K, V>(*(map.m)); delete tmp; return *this; } template <class K, class V> V& map_wrapper<K, V>::operator[](const K& key) { return (*this->m)[key]; } template <class K, class V> const V& map_wrapper<K, V>::operator[](const K& key) const { return (*this->m)[key]; } template <class K, class V> const V& map_wrapper<K, V>::get(const K& key) const { return (*this->m)[key]; } template <class K, class V> void map_wrapper<K, V>::put(const K& key, const V& value) { (*this->m)[key] = value; } template <class K, class V> int map_wrapper<K, V>::size() const { return this->m->size(); } // See : http://www.parashift.com/c++-faq-lite/templates.html#faq-35.15 // [35.15] How can I avoid linker errors with my template classes? template class __declspec(dllexport) map_wrapper<std::string, int>; /* End */ __declspec(dllexport) void fun0(map_wrapper<std::string, int>& m) { std::cout << m["hello"] << std::endl; } __declspec(dllexport) void fun1(std::map<std::string, int>& m) { std::cout << m["hello"] << std::endl; }

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• Why is conversion from UTF-8 to ISO-8859-1 not the same in Windows and Linux?

  - by user1895307

  I have the following in code to convert from UTF-8 to ISO-8859-1 in a jar file and when I execute this jar in Windows I get one result and in CentOS I get another. Might anyone know why? public static void main(String[] args) { try { String x = "Ä, ä, É, é, Ö, ö, Ãœ, ü, ß, «, »"; Charset utf8charset = Charset.forName("UTF-8"); Charset iso88591charset = Charset.forName("ISO-8859-1"); ByteBuffer inputBuffer = ByteBuffer.wrap(x.getBytes()); CharBuffer data = utf8charset.decode(inputBuffer); ByteBuffer outputBuffer = iso88591charset.encode(data); byte[] outputData = outputBuffer.array(); String z = new String(outputData); System.out.println(z); } catch(Exception e) { System.out.println(e.getMessage()); } } In Windows, java -jar test.jar test.txt creates a file containing: Ä, ä, É, é, Ö, ö, Ü, ü, ß, «, » but in CentOS I get: ??, ä, ??, é, ??, ö, ??, ü, ??, «, » Help please!

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• User not being saved, SharedPreferences

  - by Lars

  Hi i have a inlogscreen (inlogdialog.xml), which includes 2 EditText (username, passwd) and i have a CheckBox (saveuser) with which the user can decide weather to save the username or not. On the mainform (main.xml) i have a listner for these 3 values: private class OnReadyListener implements MyCustomForm.ReadyListener { public void ready(String user, String pass, boolean save) { username = user; password = pass; } } Now i first want to save the username through SharedPreferences but it doesn`t get saved, can someone help me please? If i check with system.out.println, the username is present in String username. SharedPreferenes code in main.xml: public static final String USERNM = ""; private SharedPreferences mPrefs; ....... @Override protected void onPause() { Editor e = mPrefs.edit(); e.putString(USERNM, username); <---- e.commit(); Toast.makeText(this, "Items saved.", Toast.LENGTH_SHORT).show(); super.onPause(); }

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• Grails: Querying Associations causes groovy.lang.MissingMethodException

  - by Paul

  Hi, I've got an issue with Grails where I have a test app with: class Artist { static constraints = { name() } static hasMany = [albums:Album] String name } class Album { static constraints = { name() } static hasMany = [ tracks : Track ] static belongsTo = [artist: Artist] String name } class Track { static constraints = { name() lyrics(nullable: true) } Lyrics lyrics static belongsTo = [album: Album] String name } The following query (and a more advanced, nested association query) works in the Grails Console but fails with a groovy.lang.MissingMethodException when running the app with 'run-app': def albumCriteria = tunehub.Album.createCriteria() def albumResults = albumCriteria.list { like("name", receivedAlbum) artist { like("name", receivedArtist) } // Fails here maxResults(1) } Stacktrace: groovy.lang.MissingMethodException: No signature of method: java.lang.String.call() is applicable for argument types: (tunehub.LyricsService$_getLyrics_closure1_closure2) values: [tunehub.LyricsService$_getLyrics_closure1_closure2@604106] Possible solutions: wait(), any(), wait(long), each(groovy.lang.Closure), any(groovy.lang.Closure), trim() at tunehub.LyricsService$_getLyrics_closure1.doCall(LyricsService.groovy:61) at tunehub.LyricsService$_getLyrics_closure1.doCall(LyricsService.groovy) (...truncated...) Any pointers?

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• WPF webbrowser - get HTML downloaded?

  - by Mathias Lykkegaard Lorenzen

  I'm listening to the WPF webbrowser's LoadCompleted event. It has some navigation arguments which provide details regarding the navigation. However, e.Content is always null. Am I paying attention to the wrong event here? How can I fetch the HTML that was just downloaded as string? I tried some things which I would consider hacks, but they return a string of HTML, even though that was not the string downloaded. For instance, with that method when I go to a page which just sends me the string abc, I get the result <document><body>abc</body></document> or something similar. I would prefer not getting into any more hacks than nescessary to get this running.

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• symfony 2 verify type of data stored in a single column

  - by GRafoKI

  In my DB I have a column 'own_product' that contains 2 values ( quantity and name) In my Edit form I want to check if the first field (quantity) is string and positive or not. I added a new column 'type-prod' (int , string) this is my controller : $request = $this->container->get('request'); if ($request->getMethod() == 'POST') { $formel = $request->query->get('edit_formal'); $type_value = $formel['own_product']; //case int $type_int= $this ->getDoctrine() ->getEntityManager() ->getRepository('DHG\WelcomeBundle\Entity\type-prod') ->findOneBy(array('type' => 'int')); //case string $type_string = $this ->getDoctrine() ->getEntityManager() ->getRepository('DHG\WelcomeBundle\Entity\type-prod') ->findOneBy(array('type' => 'string')); if (isset($type_value) && $type_int && $type_value > 0 && is_int($type_value)) { echo 'Success'; } else echo 'error' ; } Thank you !

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• Regex help -- cleaning up whitespace -- Java

  - by FarmBoy

  I'm trying to view the text of HTML files in a reasonable way. After I remove all of the markup and retain only the visible text, I obtain a String that looks something like this: \n\n\n\n \n\n\n \n\n \n Title here \n\n\n \n\n \n\n Menu Item 1 \n\n \n\n Menu Item 2 \n\n\n \n\n you get the point. I would like to use String.replaceAll(String regex, String regex) to replace any whitespace substring that contains more than two occurances of \n with "\n\n". Any ideas?

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• How to convert DateTime to shortdatetime in C#??

  - by Abhishek Rao

  I have a column in my datatable which is of DateTime Type. I only want the DatePart, hence when I use the ToShortDateTimeString it converts to short date but of string type. Hence when i reassign the string to the column of the datatable it again appends 12:00:00 to it. I cannot change the column type in my datatable. Is there any way to convert DateTime to ShortDateTime directly without converting to string?????

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• JAVA Procedure Error

  - by Sam....

  java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]Procedure 'STP_Insert_tblReceipt' expects parameter '@CPVFlag', which was not supplied. I m getting error at This Point when trying to call procedure... Everything is perfect ,,,Count of Question marks are similar to parameter provided cs = conn.prepareCall("{call STP_Insert_tblReceipt(?,?,?, ?,?,?, ?,?,?, ?,?,?, ?,?,?, ?,?,?, ?,?,?, ?,?,?, ?,?,?)}"); // cs = conn.prepareCall("{call STP_Receipt_Form_Insertion_Trial(?,?,?, ?,?,?, ?,?,?, ?,?,?, ?)}"); cs.setLong(1, Long.parseLong(txtMobileNo.getText())); cs.setString(2, String.valueOf(cboDistributor.getSelectedItem())); cs.setLong(3, Long.parseLong(txtBoxNo.getText())); cs.setInt(4, Integer.parseInt(txtFileNo.getText())); cs.setString(5, pickUp_date); cs.setString(6, rec_date); cs.setString(7, String.valueOf(cmbCtrlNo.getSelectedItem())); cs.setString(8, UserName); cs.setString(9, rec_date); cs.setString(10, RegionLocation); cs.setString(11, txtRemark.getText().trim()); cs.setString(12, txtSimNo.getText().trim()); cs.setInt(13, 2); cs.setString(14, String.valueOf(cmbAryanRegion.getSelectedItem())); cs.setString(15, String.valueOf(cboPickUpType.getSelectedItem())); cs.setString(16, String.valueOf(txtCafNo.getText())); cs.setString(17, distributorId); //cs.setString(18, circleName); cs.setString(18, cboCircle.getSelectedItem().toString()); cs.registerOutParameter(19, java.sql.Types.INTEGER); cs.setString(20, auditorName); cs.setString(21, retailerName); cs.setString(22, retailerCode); cs.setInt(23, mappedFlag); //cs.setString(24, distCode); cs.setString(24, cboDistCode.getSelectedItem().toString()); //cs.setString(25, zoneName); cs.setString(25, cboZone.getSelectedItem().toString()); cs.setString(26, comment); **cs.setInt(27, 1);** **this is for CPV Flag** After this cs.execute();

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• validate constructor arguments or method parameters with annotations, and let them throw an exceptio

  - by marius

  I am validating constructor and method arguments, as I want to the software, especially the model part of it, to fail fast. As a result, constructor code often looks like this public MyModelClass(String arg1, String arg2, OtherModelClass otherModelInstance) { if(arg1 == null) { throw new IllegalArgumentsException("arg1 must not be null"); } // further validation of constraints... // actual constructor code... } Is there a way to do that with an annotation driven approach? Something like: public MyModelClass(@NotNull(raise=IllegalArgumentException.class, message="arg1 must not be null") String arg1, @NotNull(raise=IllegalArgumentException.class) String arg2, OtherModelClass otherModelInstance) { // actual constructor code... } In my eyes this would make the actual code a lot more readable. In understand that there are annotations in order to support IDE validation (like the existing @NotNull annotation). Thank you very much for your help.

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• C# Combobox and TabControl woes

  - by Jake

  enter code hereI have a TabControl on a Form and in the TabPages there are ComboBoxes. When the form OnLoad, I populate the ListItems in the ComboBoxes and the attempt to set default values to string.Empty. However, the ComboBox.SelectedText = string.Empty only works for the first TabPage. The other ComboBoxes ignore the command and take the default value as the first item in the list. Why is this so? How can I overcome it? The ComboBoxes are all set up by this function public static void PrepareComboBox(ComboBox combobox, FieldValueList list) { combobox.DropDownStyle = ComboBoxStyle.DropDown; combobox.AutoCompleteSource = AutoCompleteSource.ListItems; combobox.AutoCompleteMode = AutoCompleteMode.Suggest; combobox.DataSource = list.DataSource; combobox.DisplayMember = list.DisplayMember; combobox.ValueMember = list.ValueMember; combobox.Text = string.Empty; combobox.SelectedText = string.Empty; }

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• ASP.NET MVC 2 - Checkboxes

  - by Jay

  I'm using string[] roles = Roles.GetAllRoles() to get a string[] of all the ASP.NET membership roles for my application. I'm sending the roles to my view in ViewData and using a foreach to create a set of Checkboxes using <%: Html.CheckBox("RoleCheckBox") %>. There are 3 roles and my view does render 3 checkboxes. When I do a View/Source, I see the checkboxes and their corresponding hidden tags. They all have the same, so there are 6 tags with the name "RoleCheckBox" - 3 that render the checkboxes and 3 that are hidden. The problem comes when I post the form back to my controller and bind the results - something like public ActionResult Create(Person person, string[] RoleCheckBox). I get FOUR strings and I have no idea where the fourth string ("false") is coming from. I could do some testing by trying various combinations of checks to see which one (hopefully) doesn't change and ignore it but that's just ugly. Does anyone know why this would be happening? Thanks, Jay

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• Lucene setboost doesn't work

  - by Keven

  Hi all, OUr team just upgrade lucene from 2.3 to 3.0 and we are confused about the setboost and getboost of document. What we want is just set a boost for each document when add them into index, then when search it the documents in the response should have different order according to the boost I set. But it seems the order is not changed at all, even the boost of each document in the search response is still 1.0. Could some one give me some hit? Following is our code: String[] a = new String[] { "schindler", "spielberg", "shawshank", "solace", "sorcerer", "stone", "soap", "salesman", "save" }; List strings = Arrays.asList(a); AutoCompleteIndex index = new Index(); IndexWriter writer = new IndexWriter(index.getDirectory(), AnalyzerFactory.createAnalyzer("en_US"), true, MaxFieldLength.LIMITED); float i = 1f; for (String string : strings) { Document doc = new Document(); Field f = new Field(AutoCompleteIndexFactory.QUERYTEXTFIELD, string, Field.Store.YES, Field.Index.NOT_ANALYZED); doc.setBoost(i); doc.add(f); writer.addDocument(doc); i += 2f; } writer.close(); IndexReader reader2 = IndexReader.open(index.getDirectory()); for (int j = 0; j < reader2.maxDoc(); j++) { if (reader2.isDeleted(j)) { continue; } Document doc = reader2.document(j); Field f = doc.getField(AutoCompleteIndexFactory.QUERYTEXTFIELD); System.out.println(f.stringValue() + ":" + f.getBoost() + ", docBoost:" + doc.getBoost()); doc.setBoost(j); }

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• Constructor within a constructor

  - by Chiramisu

  Is this a bad idea? Does calling a generic private constructor within a public constructor create multiple instances, or is this a valid way of initializing class variables? Private Class MyClass Dim _msg As String Sub New(ByVal name As String) Me.New() 'Do stuff End Sub Sub New(ByVal name As String, ByVal age As Integer) Me.New() 'Do stuff End Sub Private Sub New() 'Initializer constructor Me._msg = "Hello StackOverflow" 'Initialize other variables End Sub End Class

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• Why does sending post data with WebRequest take so long?

  - by Paramiliar

  I am currently creating a C# application to tie into a php / MySQL online system. The application needs to send post data to scripts and get the response. When I send the following data username=test&password=test I get the following responses... Starting request at 22/04/2010 12:15:42 Finished creating request : took 00:00:00.0570057 Transmitting data at 22/04/2010 12:15:42 Transmitted the data : took 00:00:06.9316931 <<-- Getting the response at 22/04/2010 12:15:49 Getting response 00:00:00.0360036 Finished response 00:00:00.0360036 Entire call took 00:00:07.0247024 As you can see it is taking 6 seconds to actually send the data to the script, I have done further testing bye sending data from telnet and by sending post data from a local file to the url and they dont even take a second so this is not a problem with the hosted script on the site. Why is it taking 6 seconds to transmit the data when it is two simple strings? I use a custom class to send the data class httppostdata { WebRequest request; WebResponse response; public string senddata(string url, string postdata) { var start = DateTime.Now; Console.WriteLine("Starting request at " + start.ToString()); // create the request to the url passed in the paramaters request = (WebRequest)WebRequest.Create(url); // set the method to post request.Method = "POST"; // set the content type and the content length request.ContentType = "application/x-www-form-urlencoded"; request.ContentLength = postdata.Length; // convert the post data into a byte array byte[] byteData = Encoding.UTF8.GetBytes(postdata); var end1 = DateTime.Now; Console.WriteLine("Finished creating request : took " + (end1 - start)); var start2 = DateTime.Now; Console.WriteLine("Transmitting data at " + start2.ToString()); // get the request stream and write the data to it Stream dataStream = request.GetRequestStream(); dataStream.Write(byteData, 0, byteData.Length); dataStream.Close(); var end2 = DateTime.Now; Console.WriteLine("Transmitted the data : took " + (end2 - start2)); // get the response var start3 = DateTime.Now; Console.WriteLine("Getting the response at " + start3.ToString()); response = request.GetResponse(); //Console.WriteLine(((WebResponse)response).StatusDescription); dataStream = response.GetResponseStream(); StreamReader reader = new StreamReader(dataStream); var end3 = DateTime.Now; Console.WriteLine("Getting response " + (end3 - start3)); // read the response string serverresponse = reader.ReadToEnd(); var end3a = DateTime.Now; Console.WriteLine("Finished response " + (end3a - start3)); Console.WriteLine("Entire call took " + (end3a - start)); //Console.WriteLine(serverresponse); reader.Close(); dataStream.Close(); response.Close(); return serverresponse; } } And to call it I use private void btnLogin_Click(object sender, EventArgs e) { // string postdata; if (txtUsername.Text.Length < 3 || txtPassword.Text.Length < 3) { MessageBox.Show("Missing your username or password."); } else { string postdata = "username=" + txtUsername.Text + "&password=" + txtPassword.Text; httppostdata myPost = new httppostdata(); string response = myPost.senddata("http://www.domainname.com/scriptname.php", postdata); MessageBox.Show(response); } }

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