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• CSS: "float:left" doesn't work as expected

  - by Patrick

  hi, I want to display 2 columns of images using "float:left", and I dunno why the 3rd image is on the right. See screenshot:http://dl.dropbox.com/u/72686/imagesFloat.png See HTML: <div class="field-item odd"> <img alt="" class="filefield-imagecache-galleryImage" src="http://localhost/bernardi/sites/default/files/Picture%202.png" title=""><br> <span>description1</span> </div> <div class="field-item even"> <img alt="" class="filefield-imagecache-galleryImage" src="http://localhost/bernardi/sites/default/files/Picture%203.png" title=""><br> <span>description2</span> </div> <div class="field-item odd"> <img alt="" class="filefield-imagecache-galleryImage" src="http://localhost/bernardi/sites/default/files/Picture%204.png" title=""><br> <span>description3</span> </div> <div class="field-item even"> <img alt="" class="filefield-imagecache-galleryImage" src="http://localhost/bernardi/sites/default/files/Picture%205.png" title=""><br> <span></span> </div> see CSS: .field-field-image .odd { padding-right:20px; } .field-field-image .even { padding-left:20px; } .field-field-image .field-item { float:left; } thanks

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• errors when using c++ bison ---- in the file position.hh

  - by Eric

  firstly I'm not good at English so forgive me. I compile my program with the bison generated files in visual studio and get these errors: ...\position.hh(83): error C2589: '(' : illegal token on right side of '::' ...\position.hh(83): error C2059: syntax error : '::' ...\position.hh(83): error C2589: '(' : illegal token on right side of '::' ...\position.hh(83): error C2059: syntax error : '::' and the corresponding code is: inline void columns (int count = 1) { column = std::max (1u, column + count); } I think the problem is with std::max. If I change std::max to equivalent code then there is problem anymore, but is there a better solution instead of changing the generated code? here is the *.yy file I wrote. // // bison.yy // %skeleton "lalr1.cc" %require "2.4.2" %defines %define parser_class_name "cmd_parser" %locations %debug %error-verbose %code requires { class ParserDriver; } %parse-param { ParserDriver& driver } %lex-param { ParserDriver& driver } %union { struct ast *a; double d; struct symbol *s; struct symlist *sl; int fn; } %code { #include "helper_func.h" #include "ParserDriver.h" std::string error_msg = ""; } %token <d> NUMBER %token <s> NAME %token <fn> FUNC %token EOL %token IF THEN ELSE WHILE DO LET %token SYM_TABLE_OVERFLOW %token UNKNOWN_CHARACTER %nonassoc <fn> CMP %right '=' %left '+' '-' %left '*' '/' %nonassoc '|' UMINUS %type <a> exp stmt list explist %type <sl> symlist %{ extern int yylex(yy::cmd_parser::semantic_type *yylval, yy::cmd_parser::location_type* yylloc); %} %start calclist %% ... grammar rules ...

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• Hibernate : Opinions in Composite PK vs Surrogate PK

  - by Albert Kam

  As i understand it, whenever i use @Id and @GeneratedValue on a Long field inside JPA/Hibernate entity, i'm actually using a surrogate key, and i think this is a very nice way to define a primary key considering my not-so-good experiences in using composite primary keys, where : there are more than 1 business-value-columns combination that become a unique PK the composite pk values get duplicated across the table details cannot change the business value inside that composite PK I know hibernate can support both types of PK, but im left wondering by my previous chats with experienced colleagues where they said that composite PK is easier to deal with when doing complex SQL queries and stored procedure processes. They went on saying that when using surrogate keys will complicate things when doing joining and there are several condition when it's impossible to do some stuffs when using surrogate keys. Although im sorry i cant explain the detail here since i was not clear enough when they explain it. Maybe i'll put more details next time. Im currently trying to do a project, and want to try out surrogate keys, since it's not getting duplicated across tables, and we can change the business-column values. And when the need for some business value combination uniqueness, i can use something like : @Table(name="MY_TABLE", uniqueConstraints={ @UniqueConstraint(columnNames={"FIRST_NAME", "LAST_NAME"}) // name + lastName combination must be unique But im still in doubt because of the previous discussion about the composite key. Could you share your experiences in this matter ? Thank you !

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• PDO bindparam not working.

  - by jim

  I am trying to save data into a database using PDO. All columns save correctly with the exception of one. No matter what I try, I cannot get the data to go in. myfunc($db, $data) { echo $data; // <----- Outputs my data. example: 'jim jones' $stmt = $db->prepare("CALL test(:id, :data, :ip, :expires)"); $stmt->bindParam(':id', $id, PDO::PARAM_STR); $stmt->bindParam(':data', $data, PDO::PARAM_STR); $stmt->bindParam(':ip', $ip, PDO::PARAM_STR); $stmt->bindParam(':expires', $expires, PDO::PARAM_STR); ... } So even after verifying that the data variable in fact holds my data, the bindParam method will not bind. When I echo the data variable, I can see the data is there. It will not save though. If I copy the echo'd output of the data variable to screen and paste it into a new variable, it WILL save. I'm at this now for a couple of hours. Can someone please have a look? EDIT: I want to also mention that I have tried using bindValue() in place of bindParam() and the data for the data variable will still not save.

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• Accessing dynamically added control from GridView Footer row

  - by harold-sota

  Hi, I have GridView control in my asp.net page with auto generated fields there is only footer template is present under asp:TemplateField. I can bind this gridview with any of databae table as depend on user selection. Now want to add new record in database so I have added text boxes on footer template cells at runtime depend on number of columns on table. But when I accessing these text boxes from footer template on gridview_RowCommand event its not retriving textbox control. this is the code SGridView.ShowFooter = True For i As Integer = 0 To ctrList.Count Dim ctr As Control = CType(ctrList.Item(i), Control) SGridView.FooterRow.Cells(i + 1).Controls.Add(ctr) Next the ctrList contain Controls textBox, checkbox dropdowlist ect. there is all ok but when i wont to get the text or value or checked value of controls i cant cast the controls in rowcommand event Here is the code: Protected Sub SGridView_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles SGridView.RowCommand If e.CommandName = "Add" Then Dim ctrList As ControlCollection = SGridView.FooterRow.Controls For Each ctr As Control In ctrList If TypeOf ctr Is TextBox Then Dim name As TextBox = CType(ctr, TextBox) Dim val As String = name.Text End If Next End If this excample is for the textBox control. Plese suggest me how can I get footer control textboxes. So that I can save data in database.

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• Social Network News Feed Database & Design

  - by pws5068

  I'm designing a News Feed system using PHP/MySQL similar to facebook's. I have asked a similar question before but now I've changed the design and I'm looking for feedback. Example Notifications: User_A commented on User_B's new album. "Hey man nice picture!" User_B added a new Photo to [his/her] profile. [show photo thumbnail] Initially, I implemented this using excessive columns for Obj1:Type1 | Obj2:Type2 | etc.. Now the design is set up using a couple special keywords, and actor/receiver relationships. My database is designed for efficiency - using a table of messages joined on a table containing userid,actionid,receiverid,receiverObjectTypeID, Here's a condensed version of what it will look like once joined: News_ID | User_ID | Message | Timestamp 2643 A %a commented on %o's new %r. SomeTimestamp 2644 B %a added a new %r to [his/her] profile. SomeTimestamp %a = the User_ID of the person doing the action %r = the receiving object %o = the owner of the receiving object (for example the owner of the album) (NULL if %r is a user) Questions: Is this a smart (efficient/scalable) way to move forward? How can I show messages like: "User_B added 4 new photos to his profile."?

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• jQuery Datatables throws error when dynamically created row headers

  - by JM4

  I am using the Datatables jquery plugin for one of my projects. For one in particular, the number of columns can vary based on how many children a consumer has (yes I realize normalization and proper technique would insert on another row but it is a client requirement). Datatables must be set up as such: <table> <thead> <tr> <th></th> </tr> </thead> <tbody> <tr> <td></td> </tr> </tbody> </table> my script starts out as: <table cellpadding="0" cellspacing="0" border="0" class="display" id="sortable"> <thead> <tr> <th>parent name</th> <th>parent phone</th> <?php try { $db->beginTransaction(); $stmt = $db->prepare("SELECT max(num_deps) FROM (SELECT count(a.id) as num_deps FROM children a INNER JOIN parents b USING(id) WHERE a.id !=0 GROUP BY a.id) x"); $stmt->execute(); $rows = $stmt->fetchAll(); for($i=1; $i<=$rows[0][0]; $i++) { echo " <th>Child Name ".$i."</th> <th>Date of Birth ".$i."</th> "; } $db->commit(); } catch (PDOException $e) { echo "<p align='center'>There was a system error. Please contact administration.<br>".$e->getMessage()."</p><br />"; } ?> </tr> </thead> In this manner, the final column headers can be 1 or 50 spots long. However, with this dynamic code in place, datatables throws the following error: ""DataTables warning (table id = 'datatable'): Cannot reinitialise DataTable. To retrieve the DataTables object for this table, please pass either no arguments to the dataTable() function, or set bRetrive to true. Alternativly, to destroy old table and create a new one...ETC."' Yes I have set "bRetrieve" : true in the javascript above and that does not do the trick. If I remove the code above, the file "works" fine but it leaves off the necessary columns for my table. Any ideas? Displaying JS <script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jqueryui/1.8.6/jquery-ui.min.js"></script> <script type="text/javascript" src="../media/js/jquery.dataTables.min.js"></script> <script type="text/javascript" src="../media/js/TableTools/TableTools.js"></script> <script type="text/javascript" src="../media/ZeroClipboard/ZeroClipboard.js"></script> <script type="text/javascript"> $(document).ready(function() { TableToolsInit.sSwfPath = "../media/swf/ZeroClipboard.swf"; oTable = $('#sortable').dataTable({ "bRetrieve": true, "bProcessing": true, "sScrollX": "100%", "sScrollXInner": "110%", "bScrollCollapse": true, "bJQueryUI": true, "sPaginationType": "full_numbers", "sDom": 'T<"clear"><"fg-toolbar ui-widget-header ui-corner-tl ui-corner-tr ui-helper-clearfix"lfr>t<"fg-toolbar ui-widget-header ui-corner-bl ui-corner-br ui-helper-clearfix"ip>' }); }); </script> </head> TOP piece of HTML <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Home</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <link rel="stylesheet" type="text/css" href="style.css" /> <link rel="stylesheet" type="text/css" href="default.css" /> <script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js"></script> <style type="text/css" title="currentStyle"> @import "TableTools.css"; @import "demo_table_jui.css"; @import "jquery-ui-1.8.4.custom.css"; </style> <script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jqueryui/1.8.6/jquery-ui.min.js"></script> <script type="text/javascript" src="js/jquery.dataTables.min.js"></script> <script type="text/javascript" src="js/TableTools/TableTools.js"></script> <script type="text/javascript" src="ZeroClipboard/ZeroClipboard.js"></script> <script type="text/javascript"> $(document).ready(function() { TableToolsInit.sSwfPath = "ZeroClipboard.swf"; oTable = $('#sortable').dataTable({ "bRetrieve": true, "bProcessing": true, "sScrollX": "100%", "sScrollXInner": "110%", "bScrollCollapse": true, "bJQueryUI": true, "sPaginationType": "full_numbers", "sDom": 'T<"clear"><"fg-toolbar ui-widget-header ui-corner-tl ui-corner-tr ui-helper-clearfix"lfr>t<"fg-toolbar ui-widget-header ui-corner-bl ui-corner-br ui-helper-clearfix"ip>' }); }); </script> </head> <body bgcolor="#e0e0e0"> <div class="main"> <div class="body"> <div class="body_resize"> <div class="liquid-round"> <div class="top"><span><h2>Details</h2></span></div> <div class="center-content"> <div style="overflow-x:hidden; min-height:400px; max-height:600px; overflow-y:auto;"> <div class="demo_jui"><br /> <table cellpadding="0" cellspacing="0" border="0" class="display" width="100%" id="sortable"> <thead> <tr> <th>First Name</th> <th>MI</th> <th>Last Name</th> <th>Street Address</th> <th>City</th> <th>State</th> <th>Zip</th> <th>DOB</th> <th>Gender</th> <th>Spouse Name</th> <th>Spouse Date of Birth</th> <!-- this part is generated with the php, when removed, datatables works just fine with the rest of the page --> <th>Dependent Child Name 1</th> <th>Dependent Date of Birth 1</th> <th>Dependent Child Name 2</th> <th>Dependent Date of Birth 2</th> <th>Dependent Child Name 3</th> <th>Dependent Date of Birth 3</th> <th>Dependent Child Name 4</th> <th>Dependent Date of Birth 4</th> <th>Dependent Child Name 5</th> <th>Dependent Date of Birth 5</th> <th>Dependent Child Name 6</th> <th>Dependent Date of Birth 6</th> <th>Dependent Child Name 7</th> <th>Dependent Date of Birth 7</th> </tr> </thead> <tbody> <tr> ... UPDATE REGARDING COMMENTS/ANSWERS I have received a number of responses indicating the number of headers may not match the field count in the body. As I mention below, eliminating the php script below altogether would eliminate 5+ fields in the header and without question throw the count match off balance. This DOES NOT however cause an error and in fact "resolves" the issue in that datatables functions properly (even though there is NO header record for 5+ fields in the body.

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• Graph-structured databases and Php

  - by stagas

  I want to use a graph database using php. Can you point out some resources on where to get started? Is there any example code / tutorial out there? Or are there any other methods of storing data that relate to each other in totally random/abstract situations? - Very abstract example of the relations needed: John relates to Mary, both relate to School, John is Tall, Mary is Short, John has Blue Eyes, Mary has Green Eyes, query I want is which people are related to 'Short people that have Green Eyes and go to School' - answer John - Another example: TrackA -> ArtistA -> ArtistB -> AlbumA -----> [ label ] -> AlbumB -----> [ A ] -> TrackA:Remix -> Genre:House -> [ Album ] -----> [ label ] TrackB -> [ C ] [ B ] Example queries: Which Genre is TrackB closer to? answer: House - because it's related to Album C, which is related to TrackA and is related to Genre:House Get all Genre:House related albums of Label A : result: AlbumA, AlbumB - because they both have TrackA which is related to Genre:House - It is possible in MySQL but it would require a fixed set of attributes/columns for each item and a complex non-flexible query, instead I need every attribute to be an item by itself and instead of 'belonging' to something, to be 'related' to something.

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• Working with a CSV file with odd encapsulation // PHP

  - by Patrick

  I have a CSV file that I'm working with, and all the fields are comma separated. But some of the fields themselves, contain commas. In the raw CSV file, the fields that contain commas, are encapsulated with quotes, as seen here; "Doctor Such and Such, Medical Center","555 Scruff McGruff, Suite 103, Chicago IL 60652",(555) 555-5555,,,,something else the code I'm using is below <?PHP $file_handle = fopen("file.csv", "r"); $i=0; while (!feof($file_handle) ) { $line = fgetcsv($file_handle, 1024); $c=0; foreach($line AS $key=>$value){ if($i != 0){ if($c == 0){ echo "[ROW $i][COL $c] - $value"; //First field in row, show row # }else{ echo "[COL $c] - $value"; // Remaining fields in row } } $c++; } echo "<br>"; // Line Break to next line $i++; } fclose($file_handle); ?> The problem is I'm getting the fields with the commas split into two fields, which messes up the number of columns I'm supposed to have. Is there any way I could search for commas within quotes and convert them, or another way to deal with this?

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• Full Text Index type column is empty

  - by RemotecUk

  I am trying to create an index on a VarBinary(max) field in my SQL Server 2008 database. The steps I am taking are as follows: Table: dbo.Records Right click on table and select "Full Text Index" Then select "Define Index..." I choose the primary key which is the PK of my table (field name Id, type UniqueIndentifier). I then get the screen with the options Available Columns, Language for Word Breaker and Type Column I select my VarBinary(max) field called Chart as the Available Column by ticking the box. I select "English" as the Language for Word Breaker field. Then... I try to select the Type Column but there are no entries in here. I cannot proceed by clicking "Next" until this column is populated. Why are there no entries in this column for selection and what should be in there? Note 1: The VarBinary(max) field is linked to a file group if that makes any difference. Note 2: Also noticed that in the table designer I cannot set the full text option on that same field to "Yes" - its permanently stuck on "No". Thanks.

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• Problem Displaying XML in Grid View-newbie

  - by Dean

  I am trying to do something in VisualWebDev 2008 Express that I thought would be simple, but it is not working. I want to display data from an XML file so I added the XMLDataSource to my page, pointed it to the XML file, and then added the GridView and connected it to the datasource. I am getting the following error: GridView - GridView1There was an error rendering the control. The data source for GridView with id 'GridView1' did not have any properties or attributes from which to generate columns. Ensure that your data source has content. Could someone please tell me what I might be doing wrong, TIA Dean A smippet from my XML is as follows: 6019 - Renaissance MS - New School Renaissance MS 7155 Hall Road Fairburn, GA 30213 NS-6019200-LA-01 New School Close-out NS-6019200 0.000000000000000e+000 The construction of the new Renaissance MS will be at the intersection of Jones/Hall Road, in the districts 7th & 9F and Land Lots 117, 143 & 146 of Fulton County, GA. The work includes the construction of the 180,500 square foot building that will house 34 standard classrooms, 12 standard science labs, 20 special purpose classrooms, cafeteria and litchen, gymnasium, media center and administrative offices. The site will also have multi-purpose playfields with track, softball field, tennis courts and basketball/volleyball court. Terry O'Brien Parsons Stevens Wilkinson Stang Newdow Barton Malow -84.62242 33.61497

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• Ideas for a rudimentary software licensing implementation

  - by Ross

  I'm trying to decide how to implement a very basic licensing solution for some software I wrote. The software will run on my (hypothetical) clients' machines, with the idea being that the software will immediately quit (with a friendly message) if the client is running it on greater-than-n machines (n being the number of licenses they have purchased). Additionally, the clients are non-tech-savvy to the point where "basic" is good enough. Here is my current design, but given that I have little to no experience in the topic, I wanted to ask SO before I started any development on it: A remote server hosts a MySQL database with a table containing two columns: client-key and license quantity The client-side application connects to the MySQL database on startup, offering it's client-key that I've put into a properties file packaged into the distribution (I would create a new distribution for each new client) Chances are, I'll need a second table to store validation history, so that with some short logic, the software can decide if it can be run on a given machine (maybe a sliding window of n machines using the software per 24 hours) If the software cannot establish a connection to the MySQL database, or decides that it's over the n allowed machines per day, it closes The connection info for the remote server hosting the MySQL database should be hard-coded into the app? (That sounds like a bad idea, but otherwise they could point it to some other always-validates-to-success server) I think that about covers my initial design. The intent being that while it certainly isn't full-proof, I think I've made it at least somewhat difficult to create an easily-sharable cracking solution. Also, I can easily adjust the license amount for a given client/key pair. I gotta figure this has been done a million times before, so tell me about a better solution that's just as simple to implement and provides the same (low) amount of security. In the event that external libraries are used, I prefer Java, as that's what the software has been written in.

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• adding header row to gridview won't allow you to save the last item row

  - by Lex

  I've modified my GridView to have an extra Header row, however that extra row has caused my grid view row count to be incorrect. Basically, when I want to save the Gridview now, it doesn't recognize the last item line. In my current test I have 5 Item Lines, however only 4 of them are being saved. My code for creating the additional header Line: protected void gvStatusReport_RowDataBound(object sender, GridViewRowEventArgs e) { // This grid has multiple rows, fake the top row. if (e.Row.RowType == DataControlRowType.Header) { SortedList FormatCells = new SortedList(); FormatCells.Add("1", ",6,1"); FormatCells.Add("2", "Time Spent,7,1"); FormatCells.Add("3", "Total,2,1"); FormatCells.Add("4", ",6,1"); GetMultiRowHeader(e, FormatCells); } } The function to create a new row: public void GetMultiRowHeader(GridViewRowEventArgs e, SortedList GetCels) { GridViewRow row; IDictionaryEnumerator enumCels = GetCels.GetEnumerator(); row = new GridViewRow(-1, -1, DataControlRowType.Header, DataControlRowState.Normal); while (enumCels.MoveNext()) { string[] count = enumCels.Value.ToString().Split(Convert.ToChar(",")); TableCell cell = new TableCell(); cell.RowSpan = Convert.ToInt16(count[2].ToString()); cell.ColumnSpan = Convert.ToInt16(count[1].ToString()); cell.Controls.Add(new LiteralControl(count[0].ToString())); cell.HorizontalAlign = HorizontalAlign.Center; row.Cells.Add(cell); } e.Row.Parent.Controls.AddAt(0, row); } Then when I'm going to save, I loop through the rows: int totalRows = gvStatusReport.Rows.Count; for (int rowNumber = 0; rowNumber < totalRows; rowNumber++) { However the first line doesn't seem to have any of the columns that the item row has, and the last line doesn't even show up. My problem is that I do need the extra header line, but what is the best way to fix this?

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• Qt - reading from a text file

  - by user289175

  Hello world, I have a table view with three columns; I have just passed to write into text file using this code QFile file("/home/hamad/lesson11.txt"); if(!file.open(QIODevice::WriteOnly)) { QMessageBox::information(0,"error",file.errorString()); } QString dd; for(int row=0; row < model->rowCount(); row++) { dd = model->item(row,0)->text() + "," + model->item(row,1)->text() + "," + model->item(row,2)->text(); QTextStream out(&file); out << dd << endl; } But I'm not succeed to read the same file again, I tried this code but I don't know where is the problem in it QFile file("/home/hamad/lesson11.txt"); QTextStream in(&file); QString line = in.readLine(); while(!in.atEnd()) { QStringList fields = line.split(","); model->appendRow(fields); } Any help please ?

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• GridView: How can I get rid of extra space from my GirdView object?

  - by Lajos Arpad

  Hello, I'm writing an application for Android phones for Human vs. Human chess play over the internet. I was looking at some tutorials, to learn how to develop Android applications and found a very nice example of making galleries (it was a GridView usage example for making a gallery about dogs) and the idea came to draw the chess table using a GridView, because the example project also handled the point & click event and I intended to use the same event in the same way, but for a different purpose. The game works well (currently it's a hotseat version), however, I'm really frustrated by the fact that whenever I rotate the screen of the phone, my GridView gets hysterical and puts some empty space in my chess table between the columns. I realized that the cause of this is that the GridView's width is the same as its parent's and the GridView tries to fill its parent in with, but there should (and probably is) be a simple solution to get rid of this problem. However, after a full day of researching, I haven't found any clue to help me to make a perfect drawing about my chess table without a negative side effect in functionality. The chess table looks fine if the phone is in Portrait mode, but in Landscape mode it's far from nice. This is how I can decide whether we are in Portrait or Landscape mode: ((((MainActivity)mContext).getWindow().getWindowManager().getDefaultDisplay().getWidth()) < ((MainActivity)mContext).getWindow().getWindowManager().getDefaultDisplay().getHeight()) In the main.xml file the GridView is defined in the following way: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <GridView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/gridview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:numColumns="8" android:verticalSpacing="0dp" android:horizontalSpacing="0dp" android:stretchMode="columnWidth" android:gravity="center" > </GridView> ... </LinearLayout> I appreciate any help with the problem and thank you for reading this.

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• Mapping composite foreign keys in a many-many relationship in Entity Framework

  - by Kirk Broadhurst

  I have a Page table and a View table. There is a many-many relationship between these two via a PageView table. Unfortunately all of these tables need to have composite keys (for business reasons). Page has a primary key of (PageCode, Version), View has a primary key of (ViewCode, Version). PageView obviously enough has PageCode, ViewCode, and Version. The FK to Page is (PageCode, Version) and the FK to View is (ViewCode, Version) Makes sense and works, but when I try to map this in Entity framework I get Error 3021: Problem in mapping fragments...: Each of the following columns in table PageView is mapped to multiple conceptual side properties: PageView.Version is mapped to (PageView_Association.View.Version, PageView_Association.Page.Version) So clearly enough, EF is having a complain about the Version column being a common component of the two foreign keys. Obviously I could create a PageVersion and ViewVersion column in the join table, but that kind of defeats the point of the constraint, i.e. the Page and View must have the same Version value. Has anyone encountered this, and is there anything I can do get around it? Thanks!

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• How to prevent Hibernate from nullifying relationship column during entity removal

  - by Grzegorz

  I have two entities, A and B. I need to easily retrieve entities A, joined with entities B on the condition of equal values of some column (some column from A equal to some column in B). Those columns are not primary or foreign keys, they contain same business data. I just need to have access from each instance of A to the collection of B's with the same value of this column. So I model it like this: class A { @OneToMany @JoinColumn(name="column_in_B", referencedColumnName="column_in_A") Collection<B> bs; This way, I can run queries like "select A join fetch a.bs b where b...." (Actually, the real relationship here is many-to-many. But when I use @ManyToMany, Hibernate forces me to use join table, which doesnt exist here. So I have to use @OneToMany as workaround). So far so good. The main problem is: whenever I delete an instance of A, hibernate calls "Update B set column_in_B = null", becuase it thinks the column_in_B is foreign key pointing at primary key in A (and because row in A is deleted, it tries to clean the foreign key in B). BUT the column_in_B IS NOT a foreign key, and can't be modified, because it causes data lost (and this column is NOT NULL anyway in my case, causing data integerity exception to be thrown). Plese help me with this. How to model such relationships with Hibernate? (I would call it "virtual relationships", or "secondary relationships" or so: as they are not based on foreign keys, they are just some shortcuts which allows for retrieving related objects and quering for them with HQL)

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• JPA @ManyToMany on only one side?

  - by Ethan Leroy

  I am trying to refresh the @ManyToMany relation but it gets cleared instead... My Project class looks like this: @Entity public class Project { ... @ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER) @JoinTable(name = "PROJECT_USER", joinColumns = @JoinColumn(name = "PROJECT_ID", referencedColumnName = "ID"), inverseJoinColumns = @JoinColumn(name = "USER_ID", referencedColumnName = "ID")) private Collection<User> users; ... } But I don't have - and I don't want - the collection of Projects in the User entity. When I look at the generated database tables, they look good. They contain all columns and constraints (primary/foreign keys). But when I persist a Project that has a list of Users (and the users are still in the database), the mapping table doesn't get updated gets updated but when I refresh the project afterwards, the list of Users is cleared. For better understanding: Project project = ...; // new project with users that are available in the db System.out.println(project getUsers().size()); // prints 5 em.persist(project); System.out.println(project getUsers().size()); // prints 5 em.refresh(project); System.out.println(project getUsers().size()); // prints 0 So, how can I refresh the relation between User and Project?

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• Nokogiri HttParty Xpath Ruby on Rails

  - by Brian

  I am working with a mmorpg (Eve Online) request that returns xml. I am using httparty for the request and I am trying to use nokogiri to obtain attribute values for a specific element. Here's an example of the response: <eveapi version="2"><currentTime>2012-10-19 22:41:56</currentTime><result><rowset name="transactions" key="refID" columns="date,refID,refTypeID,ownerName1,ownerID1,ownerName2,ownerID2,argName1,argID1,amount,balance,reason,taxReceiverID,taxAmount"><row date="2012-10-18 23:41:50" refID="232323" refTypeID="9" ownerName1="University of Caille" ownerID1="32232" ownerName2="name" ownerID2="34343" argName1="" argID1="0" amount="5000.00" balance="5000.00" reason="Starter fund" taxReceiverID="" taxAmount=""/></rowset></result><cachedUntil>2012-10-19 23:03:40</cachedUntil></eveapi> I only need to access attributes for the element "row" and there can be many rows returned. I have read about xpath and from what I understand if I do the following it should return all rows: doc.xpath('row') however it does not return anything. Here's what I have so far: options = {:keyID => 111111, :vCode => 'fddfdfdfdf'} response = HTTParty.post('https://api.eveonline.com/char/WalletJournal.xml.aspx', :body => options) doc = Nokogiri::XML(response.body) doc.xpath('row').each do |r| end The loop is never executed. What am I doing wrong? I need to return all row elements and gain access to each of the row's attributes. Thanks.

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• C# and SQL - sub select from a table parameter

  - by Dr.HappyPants

  Below is a code snippet for passing a table as a parameter to a query that can be used in Sql Server 2008. I'm confused though about the "SELECT id.custid FROM @custids id". Why does it use id.custid and @custids id...? private static void datatable_example() { string [] custids = {"ALFKI", "BONAP", "CACTU", "FRANK"}; DataTable custid_list = new DataTable(); custid_list.Columns.Add("custid", typeof(String)); foreach (string custid in custids) { DataRow dr = custid_list.NewRow(); dr["custid"] = custid; custid_list.Rows.Add(dr); } using(SqlConnection cn = setup_connection()) { using(SqlCommand cmd = cn.CreateCommand()) { cmd.CommandText = @"SELECT C.CustomerID, C.CompanyName FROM Northwind.dbo.Customers C WHERE C.CustomerID IN (SELECT id.custid FROM @custids id)"; cmd.CommandType = CommandType.Text; cmd.Parameters.Add("@custids", SqlDbType.Structured); cmd.Parameters["@custids"].Direction = ParameterDirection.Input; cmd.Parameters["@custids"].TypeName = "custid_list_tbltype"; cmd.Parameters["@custids"].Value = custid_list; using (SqlDataAdapter da = new SqlDataAdapter(cmd)) using (DataSet ds = new DataSet()) { da.Fill(ds); PrintDataSet(ds); } } }

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• Excel VBA SQL Import

  - by user307655

  Hi All, I have the following code which imports data from a spreadsheet to SQL directly from Excel VBA. The code works great. However I am wondering if somebody can help me modify the code to: 1) Check if data from column A already exists in the SQL Table 2) If exists, then only update rather than import as a new role 3) if does not exist then import as a new role. Thanks again for your help Sub SQLIM() ' Send data to SQL Server ' This code loads data from an Excel Worksheet to an SQL Server Table ' Data should start in column A and should be in the same order as the server table ' Autonumber fields should NOT be included' ' FOR THIS CODE TO WORK ' In VBE you need to go Tools References and check Microsoft Active X Data Objects 2.x library Dim Cn As ADODB.Connection Dim ServerName As String Dim DatabaseName As String Dim TableName As String Dim UserID As String Dim Password As String Dim rs As ADODB.Recordset Dim RowCounter As Long Dim ColCounter As Integer Dim NoOfFields As Integer Dim StartRow As Long Dim EndRow As Long Dim shtSheetToWork As Worksheet Set shtSheetToWork = ActiveWorkbook.Worksheets("Sheet1") Set rs = New ADODB.Recordset ServerName = "WIN764X\sqlexpress" ' Enter your server name here DatabaseName = "two28it" ' Enter your database name here TableName = "COS" ' Enter your Table name here UserID = "" ' Enter your user ID here ' (Leave ID and Password blank if using windows Authentification") Password = "" ' Enter your password here NoOfFields = 7 ' Enter number of fields to update (eg. columns in your worksheet) StartRow = 2 ' Enter row in sheet to start reading records EndRow = shtSheetToWork.Cells(Rows.Count, 1).End(xlUp).Row ' Enter row of last record in sheet ' CHANGES ' Dim shtSheetToWork As Worksheet ' Set shtSheetToWork = ActiveWorkbook.Worksheets("Sheet1") '** Set Cn = New ADODB.Connection Cn.Open "Driver={SQL Server};Server=" & ServerName & ";Database=" & DatabaseName & _ ";Uid=" & UserID & ";Pwd=" & Password & ";" rs.Open TableName, Cn, adOpenKeyset, adLockOptimistic For RowCounter = StartRow To EndRow rs.AddNew For ColCounter = 1 To NoOfFields rs(ColCounter - 1) = shtSheetToWork.Cells(RowCounter, ColCounter) Next ColCounter Next RowCounter rs.UpdateBatch ' Tidy up rs.Close Set rs = Nothing Cn.Close Set Cn = Nothing End Sub

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• Rails 1.0 - Using composed_of gives me a wrong number of arguments (1 for 5) error

  - by Tristan Havelick

  I am developing a Rails 1.0 application (I can't upgrade, it's a strange situation) for which I am trying to use the :composed_of functionality. I have a class called StreetAddress: class StreetAddress attr_reader :address, :address2, :city, :state_id, :zip_code def initialize(address, address2, city, state_id, zip_code) @address = address @address2 = address2 @city = city @state_id = state_id @zip_code = zip_code end end and a model class called Hotel class Hotel < ActiveRecord::Base composed_of :street_address # ... end which has columns: "id", "brand_id", "code", "location_name", "address", "address2", "city", "state_id", "zip_code", "phone_number", "phone_ext", "fax_number", "time_zone", "url", "room_service_email", "manager_name", "manager_email" However when I try to access the aggregation I get an error: >> h = Hotel.find(1) => #<Hotel:0x38ad718 @attributes={"fax_number"=>"1-623-420-0124", "city"=>"Twin Falls", "address2"=>"285", "brand_id"=>"1", "code"=>"XZWUXUSZ", "manager_email"= >"[email protected]", "url"=>"http://www.xycdkzolukfvu.hom", "ph one_number"=>"1-805-706-9995", "zip_code"=>"72436", "phone_ext"=>"48060", "id"=> "1", "manager_name"=>"Igor Mcdowell", "room_service_email"=>"Duis.risus@Donecvit ae.ca", "time_zone"=>"America/Boise", "state_id"=>"15", "address"=>"P.O. Box 457 , 7405 Dignissim Avenue", "location_name"=>"penatibus et magnis"}> >> h.street_address ArgumentError: wrong number of arguments (1 for 5) from (eval):3:in `initialize' from (eval):3:in `new' from (eval):3:in `street_address' from (irb):6 Why?

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• SqlBulkCopy slow as molasses

  - by Chris

  I'm looking for the fastest way to load bulk data via c#. I have this script that does the job but slow. I read testimonies that SqlBulkCopy is the fastest. 1000 records 2.5 seconds. files contain anywhere near 5000 records to 250k What are some of the things that can slow it down? Table Def: CREATE TABLE [dbo].[tempDispositions]( [QuotaGroup] [varchar](100) NULL, [Country] [varchar](50) NULL, [ServiceGroup] [varchar](50) NULL, [Language] [varchar](50) NULL, [ContactChannel] [varchar](10) NULL, [TrackingID] [varchar](20) NULL, [CaseClosedDate] [varchar](25) NULL, [MSFTRep] [varchar](50) NULL, [CustEmail] [varchar](100) NULL, [CustPhone] [varchar](100) NULL, [CustomerName] [nvarchar](100) NULL, [ProductFamily] [varchar](35) NULL, [ProductSubType] [varchar](255) NULL, [CandidateReceivedDate] [varchar](25) NULL, [SurveyMode] [varchar](1) NULL, [SurveyWaveStartDate] [varchar](25) NULL, [SurveyInvitationDate] [varchar](25) NULL, [SurveyReminderDate] [varchar](25) NULL, [SurveyCompleteDate] [varchar](25) NULL, [OptOutDate] [varchar](25) NULL, [SurveyWaveEndDate] [varchar](25) NULL, [DispositionCode] [varchar](5) NULL, [SurveyName] [varchar](20) NULL, [SurveyVendor] [varchar](20) NULL, [BusinessUnitName] [varchar](25) NULL, [UploadId] [int] NULL, [LineNumber] [int] NULL, [BusinessUnitSubgroup] [varchar](25) NULL, [FileDate] [datetime] NULL ) ON [PRIMARY] and here's the code private void BulkLoadContent(DataTable dt) { OnMessage("Bulk loading records to temp table"); OnSubMessage("Bulk Load Started"); using (SqlBulkCopy bcp = new SqlBulkCopy(conn)) { bcp.DestinationTableName = "dbo.tempDispositions"; bcp.BulkCopyTimeout = 0; foreach (DataColumn dc in dt.Columns) { bcp.ColumnMappings.Add(dc.ColumnName, dc.ColumnName); } bcp.NotifyAfter = 2000; bcp.SqlRowsCopied += new SqlRowsCopiedEventHandler(bcp_SqlRowsCopied); bcp.WriteToServer(dt); bcp.Close(); } }

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• C# HTML tags inside GridView

  - by Geo Ego

  I have a SharePoint web part that I wrote in C# which is used to display SQL Server data based on user selections. I pull the data with a DataReader, fill a DataSet with it, and set that DataSet as the DataSource in a GridView and add that control to my page. The only problem I'm facing is that line breaks in the data fields are not being rendered at all. I'm simply getting a block of text that ignores the breaks that are present in the database when it's rendered to HTML. I tried a regex: Regex rgx = new Regex("\n"); string inputStr = Convert.ToString(dr[x]); string outputStr = rgx.Replace(inputStr, "<br />"); newRow[ds3.Tables["Bobst Specs 3"].Columns[x]] = outputStr; While that does detect and replace the newlines, I merely get the text "" with no line breaks. I also tried changing my SQL query to something along the lines of: SELECT REPLACE (fldCustomerName, '. ', '.' + @NewLineChar) This apparently renders more newlines. I can see that they are present, because if I also insert the regex they are affected, but do not create line breaks. I'm not sure how to replace these, and what with, to get the lines to actually break.

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• Finding column index using jQuery when table contains column-spanning cells

  - by Brant Bobby

  Using jQuery, how can I find the column index of an arbitrary table cell in the example table below, such that cells spanning multiple columns have multiple indexes? HTML <table> <tbody> <tr> <td>One</td> <td>Two</td> <td id="example1">Three</td> <td>Four</td> <td>Five</td> <td>Six</td> </tr> <tr> <td colspan="2">One</td> <td colspan="2">Two</td> <td colspan="2" id="example2">Three</td> </tr> <tr> <td>One</td> <td>Two</td> <td>Three</td> <td>Four</td> <td>Five</td> <td>Six</td> </tr> </tbody> </table> jQuery var cell = $("#example1"); var example1ColIndex = cell.parent("tr").children().index(cell); // == 2. This is fine. cell = $("#example2"); var example2ColumnIndex = cell.parent("tr").children().index(cell); // == 2. It should be 4 (or 5, but I only need the lowest). How can I do this?

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