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• Announcement: Employee Info Starter Kit (v5.0) is Released

  - by Mohammad Ashraful Alam

  Ever wanted to have a simple jQuery menu bound with ASP.NET web site map file? Ever wanted to have cool css design stuffs implemented on your ASP.NET data bound controls? Ever wanted to let Visual Studio generate logical layers for you, which can be easily tested, customized and bound with ASP.NET data controls? If your answers with respect to above questions are ‘yes’, then you will probably happy to try out latest release (v5.0) of Employee Starter Kit, which is intended to address different types of real world challenges faced by web application developers when performing common CRUD operations. Using a single database table ‘Employee’, the current release illustrates how to utilize Microsoft ASP.NET 4.0 Web Form Data Controls, Entity Framework 4.0 and Visual Studio 2010 effectively in that context. Employee Info Starter Kit is an open source ASP.NET project template that is highly influenced by the concept ‘Pareto Principle’ or 80-20 rule, where it is targeted to enable a web developer to gain 80% productivity with 20% of effort with respect to learning curve and production. This project template is titled as “Employee Info Starter Kit”, which was initially hosted on Microsoft Code Gallery and been downloaded 1, 50,000+ of copies afterword.  The latest version of this starter kit is hosted in Codeplex. Release Highlights User End Functional Specification The user end functionalities of this starter kit are pretty simple and straight forward that are focused in to perform CRUD operation on employee records as described below. Creating a new employee record Read existing employee records Update an existing employee record Delete existing employee records Architectural Overview Simple 3 layer architecture (presentation, business logic and data access layer) ASP.NET web form based user interface Built-in code generators for logical layers, implemented in Visual Studio default template engine (T4) Built-in Entity Framework entities as business entities (aka: data containers) Data Mapper design pattern based Data Access Layer, implemented in C# and Entity Framework Domain Model design pattern based Business Logic Layer, implemented in C# Object Model for Cross Cutting Concerns (such as validation, logging, exception management) Minimum System Requirements Visual Studio 2010 (Web Developer Express Edition) or higher Sql Server 2005 (Express Edition) or higher Technology Utilized Programming Languages/Scripts Browser side: JavaScript Web server side: C# Code Generation Template: T-4 Template Frameworks .NET Framework 4.0 JavaScript Framework: jQuery 1.5.1 CSS Framework: 960 grid system .NET Framework Components .NET Entity Framework .NET Optional/Named Parameters (new in .net 4.0) .NET Tuple (new in .net 4.0) .NET Extension Method .NET Lambda Expressions .NET Anonymous Type .NET Query Expressions .NET Automatically Implemented Properties .NET LINQ .NET Partial Classes and Methods .NET Generic Type .NET Nullable Type ASP.NET Meta Description and Keyword Support (new in .net 4.0) ASP.NET Routing (new in .net 4.0) ASP.NET Grid View (CSS support for sorting - (new in .net 4.0)) ASP.NET Repeater ASP.NET Form View ASP.NET Login View ASP.NET Site Map Path ASP.NET Skin ASP.NET Theme ASP.NET Master Page ASP.NET Object Data Source ASP.NET Role Based Security Getting Started Guide To see Employee Info Starter Kit in action is pretty easy! Download the latest version. Extract the file. From the extracted folder click the C# project file (Eisk.Web.csproj) to open it in Visual Studio 2010 Hit Ctrl+F5! The current release (v5.0) of Employee Info Starter Kit is properly packaged, fully documented and well tested. If you want to learn more about it in details, just check the following links: Release Home Page Installation Walkthrough Hand on Coding Walkthrough Technical Reference Enjoy!

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• SQL SERVER – UNION ALL and ORDER BY – How to Order Table Separately While Using UNION ALL

  - by pinaldave

  I often see developers trying following syntax while using ORDER BY. SELECT Columns FROM TABLE1 ORDER BY Columns UNION ALL SELECT Columns FROM TABLE2 ORDER BY Columns However the above query will return following error. Msg 156, Level 15, State 1, Line 5 Incorrect syntax near the keyword ‘ORDER’. It is not possible to use two different ORDER BY in the UNION statement. UNION returns single resultsetand as per the Logical Query Processing Phases. However, if your requirement is such that you want your top and bottom query of the UNION resultset independently sorted but in the same resultset you can add an additional static column and order by that column. Let us re-create the same scenario. First create two tables and populated with sample data. USE tempdb GO -- Create table CREATE TABLE t1 (ID INT, Col1 VARCHAR(100)); CREATE TABLE t2 (ID INT, Col1 VARCHAR(100)); GO -- Sample Data Build INSERT INTO t1 (ID, Col1) SELECT 1, 'Col1-t1' UNION ALL SELECT 2, 'Col2-t1' UNION ALL SELECT 3, 'Col3-t1'; INSERT INTO t2 (ID, Col1) SELECT 3, 'Col1-t2' UNION ALL SELECT 2, 'Col2-t2' UNION ALL SELECT 1, 'Col3-t2'; GO If we SELECT the data from both the table using UNION ALL . -- SELECT without ORDER BY SELECT ID, Col1 FROM t1 UNION ALL SELECT ID, Col1 FROM t2 GO We will get the data in following order. However, our requirement is to get data in following order. If we need data ordered by Column1 we can ORDER the resultset ordered by Column1. -- SELECT with ORDER BY SELECT ID, Col1 FROM t1 UNION ALL SELECT ID, Col1 FROM t2 ORDER BY ID GO Now to get the data in independently sorted in UNION ALL let us add additional column OrderKey and use ORDER BY  on that column. I think the description does not do proper justice let us see the example here. -- SELECT with ORDER BY - with ORDER KEY SELECT ID, Col1, 'id1' OrderKey FROM t1 UNION ALL SELECT ID, Col1, 'id2' OrderKey FROM t2 ORDER BY OrderKey, ID GO The above query will give the desired result. Now do not forget to clean up the database by running the following script. -- Clean up DROP TABLE t1; DROP TABLE t2; GO Here is the complete script used in this example. USE tempdb GO -- Create table CREATE TABLE t1 (ID INT, Col1 VARCHAR(100)); CREATE TABLE t2 (ID INT, Col1 VARCHAR(100)); GO -- Sample Data Build INSERT INTO t1 (ID, Col1) SELECT 1, 'Col1-t1' UNION ALL SELECT 2, 'Col2-t1' UNION ALL SELECT 3, 'Col3-t1'; INSERT INTO t2 (ID, Col1) SELECT 3, 'Col1-t2' UNION ALL SELECT 2, 'Col2-t2' UNION ALL SELECT 1, 'Col3-t2'; GO -- SELECT without ORDER BY SELECT ID, Col1 FROM t1 UNION ALL SELECT ID, Col1 FROM t2 GO -- SELECT with ORDER BY SELECT ID, Col1 FROM t1 UNION ALL SELECT ID, Col1 FROM t2 ORDER BY ID GO -- SELECT with ORDER BY - with ORDER KEY SELECT ID, Col1, 'id1' OrderKey FROM t1 UNION ALL SELECT ID, Col1, 'id2' OrderKey FROM t2 ORDER BY OrderKey, ID GO -- Clean up DROP TABLE t1; DROP TABLE t2; GO I am sure there are many more ways to achieve this, what method would you use if you have to face the similar situation? Reference: Pinal Dave (http://blog.sqlauthority.com)   Filed under: Best Practices, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• Why is my RAID /dev/md1 showing up as /dev/md126? Is mdadm.conf being ignored?

  - by mmorris

  I created a RAID with: sudo mdadm --create --verbose /dev/md1 --level=mirror --raid-devices=2 /dev/sdb1 /dev/sdc1 sudo mdadm --create --verbose /dev/md2 --level=mirror --raid-devices=2 /dev/sdb2 /dev/sdc2 sudo mdadm --detail --scan returns: ARRAY /dev/md1 metadata=1.2 name=ion:1 UUID=aa1f85b0:a2391657:cfd38029:772c560e ARRAY /dev/md2 metadata=1.2 name=ion:2 UUID=528e5385:e61eaa4c:1db2dba7:44b556fb Which I appended it to /etc/mdadm/mdadm.conf, see below: # mdadm.conf # # Please refer to mdadm.conf(5) for information about this file. # # by default (built-in), scan all partitions (/proc/partitions) and all # containers for MD superblocks. alternatively, specify devices to scan, using # wildcards if desired. #DEVICE partitions containers # auto-create devices with Debian standard permissions CREATE owner=root group=disk mode=0660 auto=yes # automatically tag new arrays as belonging to the local system HOMEHOST <system> # instruct the monitoring daemon where to send mail alerts MAILADDR root # definitions of existing MD arrays # This file was auto-generated on Mon, 29 Oct 2012 16:06:12 -0500 # by mkconf $Id$ ARRAY /dev/md1 metadata=1.2 name=ion:1 UUID=aa1f85b0:a2391657:cfd38029:772c560e ARRAY /dev/md2 metadata=1.2 name=ion:2 UUID=528e5385:e61eaa4c:1db2dba7:44b556fb cat /proc/mdstat returns: Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md2 : active raid1 sdb2[0] sdc2[1] 208629632 blocks super 1.2 [2/2] [UU] md1 : active raid1 sdb1[0] sdc1[1] 767868736 blocks super 1.2 [2/2] [UU] unused devices: <none> ls -la /dev | grep md returns: brw-rw---- 1 root disk 9, 1 Oct 30 11:06 md1 brw-rw---- 1 root disk 9, 2 Oct 30 11:06 md2 So I think all is good and I reboot. After the reboot, /dev/md1 is now /dev/md126 and /dev/md2 is now /dev/md127????? sudo mdadm --detail --scan returns: ARRAY /dev/md/ion:1 metadata=1.2 name=ion:1 UUID=aa1f85b0:a2391657:cfd38029:772c560e ARRAY /dev/md/ion:2 metadata=1.2 name=ion:2 UUID=528e5385:e61eaa4c:1db2dba7:44b556fb cat /proc/mdstat returns: Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md126 : active raid1 sdc2[1] sdb2[0] 208629632 blocks super 1.2 [2/2] [UU] md127 : active (auto-read-only) raid1 sdb1[0] sdc1[1] 767868736 blocks super 1.2 [2/2] [UU] unused devices: <none> ls -la /dev | grep md returns: drwxr-xr-x 2 root root 80 Oct 30 11:18 md brw-rw---- 1 root disk 9, 126 Oct 30 11:18 md126 brw-rw---- 1 root disk 9, 127 Oct 30 11:18 md127 All is not lost, I: sudo mdadm --stop /dev/md126 sudo mdadm --stop /dev/md127 sudo mdadm --assemble --verbose /dev/md1 /dev/sdb1 /dev/sdc1 sudo mdadm --assemble --verbose /dev/md2 /dev/sdb2 /dev/sdc2 and verify everything: sudo mdadm --detail --scan returns: ARRAY /dev/md1 metadata=1.2 name=ion:1 UUID=aa1f85b0:a2391657:cfd38029:772c560e ARRAY /dev/md2 metadata=1.2 name=ion:2 UUID=528e5385:e61eaa4c:1db2dba7:44b556fb cat /proc/mdstat returns: Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md2 : active raid1 sdb2[0] sdc2[1] 208629632 blocks super 1.2 [2/2] [UU] md1 : active raid1 sdb1[0] sdc1[1] 767868736 blocks super 1.2 [2/2] [UU] unused devices: <none> ls -la /dev | grep md returns: brw-rw---- 1 root disk 9, 1 Oct 30 11:26 md1 brw-rw---- 1 root disk 9, 2 Oct 30 11:26 md2 So once again, I think all is good and I reboot. Again, after the reboot, /dev/md1 is /dev/md126 and /dev/md2 is /dev/md127????? sudo mdadm --detail --scan returns: ARRAY /dev/md/ion:1 metadata=1.2 name=ion:1 UUID=aa1f85b0:a2391657:cfd38029:772c560e ARRAY /dev/md/ion:2 metadata=1.2 name=ion:2 UUID=528e5385:e61eaa4c:1db2dba7:44b556fb cat /proc/mdstat returns: Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md126 : active raid1 sdc2[1] sdb2[0] 208629632 blocks super 1.2 [2/2] [UU] md127 : active (auto-read-only) raid1 sdb1[0] sdc1[1] 767868736 blocks super 1.2 [2/2] [UU] unused devices: <none> ls -la /dev | grep md returns: drwxr-xr-x 2 root root 80 Oct 30 11:42 md brw-rw---- 1 root disk 9, 126 Oct 30 11:42 md126 brw-rw---- 1 root disk 9, 127 Oct 30 11:42 md127 What am I missing here?

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• How to Use Sparklines in Excel 2010

  - by DigitalGeekery

  One of the cool features of Excel 2010 is the addition of Sparklines. A Sparkline is basically a little chart displayed in a cell representing your selected data set that allows you to quickly and easily spot trends at a glance. Inserting Sparklines on your Spreadsheet You will find the Sparklines group located on the Insert tab.   Select the cell or cells where you wish to display your Sparklines. Select the type of Sparkline you’d like to add to your spreadsheet. You’ll notice there are three types of Sparklines, Line, Column, and Win/Loss. We’ll select Line for our example. A Create Sparklines pops up and will prompt you to enter a Data Range you are using to create the Sparklines. You’ll notice that the location range (the range where the Sparklines will appear) is already filled in. You can type in the data range manually, or click and drag with your mouse across to select the data range. This will auto-fill the data range for you. Click OK when you are finished.   You will see your Sparklines appear in the desired cells.   Customizing Sparklines Select the one of more of the Sparklines to reveal the Design tab. You can display certain value points like high and low points, negative points, and first and last points by selecting the corresponding options from the Show group. You can also mark all value points by selecting  Markers. Select your desired Sparklines and click one of the included styles from the Style group on the Design tab. Click the down arrow on the lower right corner of the box to display additional pre-defined styles…   or select Sparkline Color or Marker Color options to fully customize your Sparklines. The Axis options allow additional options such as Date Axis Type, Plotting Data Left to Right, and displaying an axis point to represent the zero line in your data with Show Axis. Column Sparklines Column Sparklines display your data in individual columns as opposed to the Line view we’ve been using for our examples. Win/Loss Sparklines Win/Loss shows a basic positive or negative representation of your data set.   You can easily switch between different Sparkline types by simply selecting the current cells (individually or the entire group), and then clicking the desired type on the Design tab. For those that may be more visually oriented, Sparklines can be a wonderful addition to any spreadsheet. Are you just getting started with Office 2010? Check out some of our other great Excel posts such as how to copy worksheets, print only selected areas of a spreadsheet, and how to share data with Excel in Office 2010. Similar Articles Productive Geek Tips Convert a Row to a Column in Excel the Easy WayShare Access Data with Excel in Office 2010Make Excel 2007 Print Gridlines In Workbook FileMake Excel 2007 Always Save in Excel 2003 FormatConvert Older Excel Documents to Excel 2007 Format TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Office 2010 reviewed in depth by Ed Bott FoxClocks adds World Times in your Statusbar (Firefox) Have Fun Editing Photo Editing with Citrify Outlook Connector Upgrade Error Gadfly is a cool Twitter/Silverlight app Enable DreamScene in Windows 7

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• Thread safe double buffering

  - by kdavis8

  I am trying to implement a draw map method that will draw the tiled image across the surface of the component. I'm having issue with this code. The double buffering does not seem to be working, because the sprite flickers like crazy; my source code: package myPackage; import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Toolkit; import java.awt.image.BufferStrategy; import java.awt.image.BufferedImage; import javax.swing.JFrame; public class GameView extends JFrame implements Runnable { public BufferedImage backbuffer; public Graphics2D g2d; public Image img; Thread gameloop; Scene scene; public GameView() { super("Game View"); setSize(600, 600); setVisible(true); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); backbuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_RGB); g2d = backbuffer.createGraphics(); Toolkit tk = Toolkit.getDefaultToolkit(); img = tk.getImage(this.getClass().getResource("cage.png")); scene = new Scene(g2d, this); gameloop = new Thread(this); gameloop.start(); } public static void main(String args[]) { new GameView(); } public void paint(Graphics g) { g.drawImage(backbuffer, 0, 0, this); repaint(); } @Override public void run() { // TODO Auto-generated method stub Thread t = Thread.currentThread(); while (t == gameloop) { scene.getScene("dirtmap"); g2d.drawImage(img, 80, 80,this![enter image description here][1]); } } private void drawScene(String string) { // TODO Auto-generated method stub // g2d.setColor(Color.white); // g2d.fillRect(0, 0, getWidth(), getHeight()); scene.getScene(string); } } package myPackage; import java.awt.Color; import java.awt.Component; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Toolkit; public class Scene { Graphics g2d; Component c; boolean loaded = false; public Scene(Graphics2D gr, Component co) { g2d = gr; c = co; } public void getScene(String mapName) { Toolkit tk = Toolkit.getDefaultToolkit(); Image tile = tk.getImage(this.getClass().getResource("dirt.png")); // g2d.setColor(Color.red); for (int y = 0; y <= 18; y++) { for (int x = 0; x <= 18; x += 1) { g2d.drawImage(tile, x * 32, y * 32, c); } } loaded = true; } }

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• Welcome 2011

  - by PSteele

  About this time last year, I wrote a blog post about how January of 2010 was almost over and I hadn’t done a single blog post.  Ugh…  History repeats itself. 2010 in Review If I look back at 2010, it was a great year in terms of technology and development: Visited Redmond to attend the MVP Summit in February.  Had a great time with the MS product teams and got to connect with some really smart people. Continued my work on Visual Studio Magazine’s “C# Corner” column.  About mid-year, the column changed from an every-other-month print column to an every-other-month print column along with bi-monthly web-only articles.  Needless to say, this kept me even busier and away from my blog. Participated in another GiveCamp!  Thanks to the wonderful leadership of Michael Eaton and all of his minions, GiveCamp 2010 was another great success.  Planning for GiveCamp 2011 will be starting soon… I switched to DVCS full time.  After years of being a loyal SVN user, I got bit by the DVCS bug.  I played around with both Mercurial and Git and finally settled on Mercurial.  It’s seamless integration with Windows Explorer along with it’s wealth of plugins made me fall in love.  I can’t imagine going back and using a centralized version control system. Continued to work with the awesome group of talent at SRT Solutions.  Very proud that SRT won it’s third consecutive FastTrack award! Jumped off the BlackBerry train and enjoying the smooth ride of Android.  It was time to replace the old BlackBerry Storm so I did some research and settled on the Motorola DroidX.  I couldn’t be happier.  Android is a slick OS and the DroidX is a sweet piece of hardware.  Been dabbling in some Android development with both Eclipse and IntelliJ IDEA (I like IntelliJ IDEA a lot better!).   2011 Plans On January 1st I was pleasantly surprised to get an email from the Microsoft MVP program letting me know that I had received the MVP award again for my community work in 2010.  I’m honored and humbled to be recognized by Microsoft as well as my peers! I’ll continue to do some Android development.  I’m currently working on a simple app to get me feet wet.  It may even makes it’s way into the Android Market. I’ve got a project that could really benefit from WPF so I’ll be diving into WPF this year.  I’ve played around with WPF a bit in the past – simple demos and learning exercises – but this will give me a chance to build an entire application in WPF.  I’m looking forward to the increased freedom that a WPF UI should give me. I plan on blogging a lot more in 2011! Technorati Tags: Android,MVP,Mercurial,WPF,SRT,GiveCamp

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• Free RAM disappears - Memory leak?

  - by Izzy

  On a fresh started system, free reports about 1.5G used RAM (8G RAM alltogether, Ubuntu 12.04 with lightdm and plasma desktop, one konsole window started). Having the apps running I use, it still consumes not more than 2G. However, having the system running for a couple of days, more and more of my free RAM disappears -- without showing up in the list of used apps: while smem --pie=name reports less than 20% used (and 80% being available), everything else says differently. free -m for example reports on about day 7: total used free shared buffers cached Mem: 7459 7013 446 0 178 997 -/+ buffers/cache: 5836 1623 Swap: 9536 296 9240 (so you can see, it's not the buffers or the cache). Today this finally ended with the system crashing completely: the windows manager being gone, apps "hanging in the air" (frameless) -- and a popup notifying me about "too many open files". Syslog reports: kernel: [856738.020829] VFS: file-max limit 752838 reached So I closed those applications I was able to close, and killed X using Ctrl-Alt-backspace. X tried to come up again after that with failsafeX, but was unable to do so as it could no longer detect its configuration. So I switched to a console using Ctrl-Alt-F2, captured all information I could think of (vmstat, free, smem, proc/meminfo, lsof, ps aux), and finally rebooted. X again came up with failsafeX; this time I told it to "recover from my backed-up configuration", then switched to a console and successfully used startx to bring up the graphical environment. I have no real clue to what is causing this issue -- though it must have to do either with X itself, or with some user processes running on X -- as after killing X, free -m output looked like this: total used free shared buffers cached Mem: 7459 2677 4781 0 62 419 -/+ buffers/cache: 2195 5263 Swap: 9536 59 9477 (~3.5GB being freed) -- to compare with the output after a fresh start: total used free shared buffers cached Mem: 7459 1483 5975 0 63 730 -/+ buffers/cache: 689 6769 Swap: 9536 0 9536 Two more helpful outputs are provided by memstat -u. Shortly before the crash: User Count Swap USS PSS RSS mail 1 0 200 207 616 whoopsie 1 764 740 817 2300 colord 1 3200 836 894 2156 root 62 70404 352996 382260 569920 izzy 80 177508 1465416 1519266 1851840 After having X killed: User Count Swap USS PSS RSS mail 1 0 184 188 356 izzy 1 1400 708 739 1080 whoopsie 1 848 668 826 1772 colord 1 3204 804 888 1728 root 62 54876 131708 149950 267860 And after a restart, back in X: User Count Swap USS PSS RSS mail 1 0 212 217 628 whoopsie 1 0 1536 1880 5096 colord 1 0 3740 4217 7936 root 54 0 148668 180911 345132 izzy 47 0 370928 437562 915056 Edit: Just added two graphs from my monitoring system. Interesting to see: everytime when there's a "jump" in memory consumption, CPU peaks as well. Just found this right now -- and it reminds me of another indicator pointing to X itself: Often when returning to my machine and unlocking the screen, I found something doing heavvy work on my CPU. Checking with top, it always turned out to be /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none. So after this long explanation, finally my questions: What could be the possible causes? How can I better identify involved processes/applications? What steps could be taken to avoid this behaviour -- short from rebooting the machine all X days? I was running 8.04 (Hardy) for about 5 years on my old machine, never having experienced the like (always more than 100 days uptime, before rebooting for e.g. kernel updates). This now is a complete new machine with a fresh install of 8.04. In case it matters, some specs: AMD A4-3400 APU with Radeon(tm) HD Graphics, using the open-source ati/radeon driver (so no fglrx installed), 8GB RAM, WDC WD1002FAEX-0 hdd (1TB), Asus F1A75-V Evo mainboard. Ubuntu 12.04 64-bit with KDE4/Plasma. Apps usually open more or less permanently include Evolution, Firefox, konsole (with Midnight Commander running inside, about 4 tabs), and LibreOffice -- plus occasionally Calibre, Gimp and Moneyplex (banking software I'm already using for almost 20 years now, in a version which did fine on Hardy).

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• Project Euler 17: (Iron)Python

  - by Ben Griswold

  In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 17.  As always, any feedback is welcome. # Euler 17 # http://projecteuler.net/index.php?section=problems&id=17 # If the numbers 1 to 5 are written out in words: # one, two, three, four, five, then there are # 3 + 3 + 5 + 4 + 4 = 19 letters used in total. # If all the numbers from 1 to 1000 (one thousand) # inclusive were written out in words, how many letters # would be used? # # NOTE: Do not count spaces or hyphens. For example, 342 # (three hundred and forty-two) contains 23 letters and # 115 (one hundred and fifteen) contains 20 letters. The # use of "and" when writing out numbers is in compliance # with British usage. import time start = time.time() def to_word(n): h = { 1 : "one", 2 : "two", 3 : "three", 4 : "four", 5 : "five", 6 : "six", 7 : "seven", 8 : "eight", 9 : "nine", 10 : "ten", 11 : "eleven", 12 : "twelve", 13 : "thirteen", 14 : "fourteen", 15 : "fifteen", 16 : "sixteen", 17 : "seventeen", 18 : "eighteen", 19 : "nineteen", 20 : "twenty", 30 : "thirty", 40 : "forty", 50 : "fifty", 60 : "sixty", 70 : "seventy", 80 : "eighty", 90 : "ninety", 100 : "hundred", 1000 : "thousand" } word = "" # Reverse the numbers so position (ones, tens, # hundreds,...) can be easily determined a = [int(x) for x in str(n)[::-1]] # Thousands position if (len(a) == 4 and a[3] != 0): # This can only be one thousand based # on the problem/method constraints word = h[a[3]] + " thousand " # Hundreds position if (len(a) >= 3 and a[2] != 0): word += h[a[2]] + " hundred" # Add "and" string if the tens or ones # position is occupied with a non-zero value. # Note: routine is broken up this way for [my] clarity. if (len(a) >= 2 and a[1] != 0): # catch 10 - 99 word += " and" elif len(a) >= 1 and a[0] != 0: # catch 1 - 9 word += " and" # Tens and ones position tens_position_value = 99 if (len(a) >= 2 and a[1] != 0): # Calculate the tens position value per the # first and second element in array # e.g. (8 * 10) + 1 = 81 tens_position_value = int(a[1]) * 10 + a[0] if tens_position_value <= 20: # If the tens position value is 20 or less # there's an entry in the hash. Use it and there's # no need to consider the ones position word += " " + h[tens_position_value] else: # Determine the tens position word by # dividing by 10 first. E.g. 8 * 10 = h[80] # We will pick up the ones position word later in # the next part of the routine word += " " + h[(a[1] * 10)] if (len(a) >= 1 and a[0] != 0 and tens_position_value > 20): # Deal with ones position where tens position is # greater than 20 or we have a single digit number word += " " + h[a[0]] # Trim the empty spaces off both ends of the string return word.replace(" ","") def to_word_length(n): return len(to_word(n)) print sum([to_word_length(i) for i in xrange(1,1001)]) print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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• SSIS Debugging Tip: Using Data Viewers

  - by Jim Giercyk

  When you have an SSIS package error, it is often very helpful to see the data records that are causing the problem.  After all, if your input has 50,000 records and 1 of them has corrupt data, it can be a chore.  Your execution results will tell you which column contains the bad data, but not which record…..enter the Data Viewer. In this scenario I have created a truncation error.  The input length of [lastname] is 50, but the output table has a length of 15.  When it runs, at least one of the records causes the package to fail.     Now what?  We can tell from our execution results that there is a problem with [lastname], but we have no idea WHICH record?     Let’s identify the row that is actually causing the problem.  First, we grab the oft’ forgotten Row Count shape from our toolbar and connect it to the error output from our input query.  Remember that in order to intercept errors with the error output, you must redirect them.     The Row Count shape requires 1 integer variable.  For our purposes, we will not reference the variable, but it is still required in order for the package to run.  Typically we would use the variable to hold the number of rows in the table and refer back to it later in our process.  We are simply using the Row Count as a “Dead End” for errors.  I called my variable RowCounter.  To create a variable, with no shapes selected, right-click on the background and choose Variable.     Once we have setup the Row Count shape, we can right-click on the red line (error output) from the query, and select Data Viewers.  In the popup, we click the add button and we will see this:     There are other fancier options we can play with, but for now we just want to view the output in a grid.  WE select Grid, then click OK on all of the popup windows to shut them down.  We should now see a grid with a pair of glasses on the error output line.     So, we are ready to catch the error output in a grid and see that is causing the problem!  This time when we run the package, it does not fail because we directed the error to the Row Count.  We also get a popup window showing the error record in a grid.  If there were multiple errors we would see them all.     Indeed, the [lastname] column is longer than 15 characters.  Notice the last column in the grid, [Error Code – Description].  We knew this was a truncation error before we added the grid, but if you have worked with SSIS for any length of time, you know that some errors are much more obscure.  The description column can be very useful under those circumstances! Data viewers can be used any time we want to see the data that is actually in the pipeline;  they stop the package temporarily until we shut them.  Also remember that the Row Count shape can be used as a “Dead End”.  It is useful during development when we want to see the output from a dataflow, but don’t want to update a table or file with the data.  Data viewers are an invaluable tool for both development and debugging.  Just remember to REMOVE THEM before putting your package into production

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• Programmatically Making the Selected OutlineView Cell Editable

  - by Geertjan

  When you're using the OutlineView and you use the Tab key to move through its cells, the cells are shown to be selected, as below: However, until you press the Space key in the selected cell, or until you click the mouse within it, you cannot edit it. That's extremely annoying when you're creating a data-entry application. Your user would like to begin editing a cell as soon as they have tabbed into it. Needing to press Space first, or click the mouse in the cell first, is a cumbersome additional step that completely destroys your work flow. Below, you can see that an editable cell looks very different to one that is merely selected: I.e., now I can type and the text changes. How to set up the OutlineView so that the Tab key makes the selected cell editable? Here's the constructor of the TopComponent you see above: public ViewerTopComponent() {     initComponents();     setName(Bundle.CTL_ViewerTopComponent());     setToolTipText(Bundle.HINT_ViewerTopComponent());     setLayout(new BorderLayout());     OutlineView ov = new OutlineView();     final Outline outline = ov.getOutline();     outline.setRootVisible(false);     //When column selection changes, e.g., via Tab key,     //programmatically start editing the cell:     ListSelectionListener listSelectionListener = new ListSelectionListener() {         @Override         public void valueChanged(ListSelectionEvent e) {             int row = outline.getSelectedRow();             int column = outline.getSelectedColumn();             //Ignore the node column:             if (row > -1 && row > -1) {                 outline.editCellAt(row, column);             }         }     };     outline.getColumnModel().getSelectionModel().addListSelectionListener(listSelectionListener);     ov.setPropertyColumns(             "city", "City", "state", "State");     add(ov, BorderLayout.CENTER);     em.setRootContext(             new AbstractNode(Children.create(new CustomerChildFactory(), true)));     associateLookup(ExplorerUtils.createLookup(em, getActionMap())); }

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• Non use of persisted data

  - by Dave Ballantyne

  Working at a client site, that in itself is good to say, I ran into a set of circumstances that made me ponder, and appreciate, the optimizer engine a bit more. Working on optimizing a stored procedure, I found a piece of code similar to : select BillToAddressID, Rowguid, dbo.udfCleanGuid(rowguid) from sales.salesorderheaderwhere BillToAddressID = 985 A lovely scalar UDF was being used,  in actuality it was used as part of the WHERE clause but simplified here.  Normally I would use an inline table valued function here, but in this case it wasn't a good option. So this seemed like a pretty good case to use a persisted column to improve performance. The supporting index was already defined as create index idxBill on sales.salesorderheader(BillToAddressID) include (rowguid) and the function code is Create Function udfCleanGuid(@GUID uniqueidentifier)returns varchar(255)with schemabindingasbegin Declare @RetStr varchar(255) Select @RetStr=CAST(@Guid as varchar(255)) Select @RetStr=REPLACE(@Retstr,'-','') return @RetStrend Executing the Select statement produced a plan of : Nothing surprising, a seek to find the data and compute scalar to execute the UDF. Lets get optimizing and remove the UDF with a persisted column Alter table sales.salesorderheaderadd CleanedGuid as dbo.udfCleanGuid(rowguid)PERSISTED A subtle change to the SELECT statement… select BillToAddressID,CleanedGuid from sales.salesorderheaderwhere BillToAddressID = 985 and our new optimized plan looks like… Not a lot different from before!  We are using persisted data on our table, where is the lookup to fetch it ?  It didnt happen,  it was recalculated.  Looking at the properties of the relevant Compute Scalar would confirm this ,  but a more graphic example would be shown in the profiler SP:StatementCompleted event. Why did the lookup happen ? Remember the index definition,  it has included the original guid to avoid the lookup.  The optimizer knows this column will be passed into the UDF, run through its logic and decided that to recalculate is cheaper than the lookup.  That may or may not be the case in actuality,  the optimizer has no idea of the real cost of a scalar udf.  IMO the default cost of a scalar UDF should be seen as a lot higher than it is, since they are invariably higher. Knowing this, how do we avoid the function call?  Dropping the guid from the index is not an option, there may be other code reliant on it.   We are left with only one real option,  add the persisted column into the index. drop index Sales.SalesOrderHeader.idxBillgocreate index idxBill on sales.salesorderheader(BillToAddressID) include (rowguid,cleanedguid) Now if we repeat the statement select BillToAddressID,CleanedGuid from sales.salesorderheaderwhere BillToAddressID = 985 We still have a compute scalar operator, but this time it wasnt used to recalculate the persisted data.  This can be confirmed with profiler again. The takeaway here is,  just because you have persisted data dont automatically assumed that it is being used.

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• Controlling soft errors and false alarms in SSIS

  - by Jim Giercyk

  If you are like me, you dread the 3AM wake-up call.  I would say that the majority of the pages I get are false alarms.  The alerts that require action often require me to open an SSIS package, see where the trouble is and try to identify the offending data.  That can be very time-consuming and can take quite a chunk out of my beauty sleep.  For those reasons, I have developed a simple error handling scenario for SSIS which allows me to rest a little easier.  Let me first say, this is a high level discussion; getting into the nuts and bolts of creating each shape is outside the scope of this document, but if you have an average understanding of SSIS, you should have no problem following along. In the Data Flow above you can see that there is a caution triangle.  For the purpose of this discussion I am creating a truncation error to demonstrate the process, so this is to be expected.  The first thing we need to do is to redirect the error output.  Double-clicking on the Query shape presents us with the properties window for the input.  Simply set the columns that you want to redirect to Redirect Row in the dropdown box and hit Apply. Without going into a dissertation on error handling, I will just note that you can decide which errors you want to redirect on Error and on Truncation.  Therefore, to override this process for a column or condition, simply do not redirect that column or condition. The next thing we want to do is to add some information about the error; specifically, the name of the package which encountered the error and which step in the package wrote the record to the error table.  REMEMBER: If you redirect the error output, your package will not fail, so you will not know where the error record was created without some additional information.    I added 3 columns to my error record; Severity, Package Name and Step Name.  Severity is just a free-form column that you can use to note whether an error is fatal, whether the package is part of a test job and should be ignored, etc.  Package Name and Step Name are system variables. In my package I have created a truncation situation, where the firstname column is 50 characters in the input, but only 4 characters in the output.  Some records will pass without truncation, others will be sent to the error output.  However, the package will not fail. We can see that of the 14 input rows, 8 were redirected to the error table. This information can be used by another step or another scheduled process or triggered to determine whether an error should be sent.  It can also be used as a historical record of the errors that are encountered over time.  There are other system variables that might make more sense in your infrastructure, so try different things.  Date and time seem like something you would want in your output for example.  In summary, we have redirected the error output from an input, added derived columns with information about the errors, and inserted the information and the offending data into an error table.  The error table information can be used by another step or process to determine, based on the error information, what level alert must be sent.  This will eliminate false alarms, and give you a head start when a genuine error occurs.

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• Using HTML5 Today part 3&ndash; Using Polyfills

  - by Steve Albers

  Shims helps when adding semantic tags to older IE browsers, but there is a huge range of other new HTML5 features that having varying support on browsers.  Polyfills are JavaScript code and/or browser plug-ins that can provide older or less featured browsers with API support.  The best polyfills will detect the whether the current browser has native support, and only adds the functionality if necessary.  The Douglas Crockford JSON2.js library is an example of this approach: if the browser already supports the JSON object, nothing changes.  If JSON is not available, the library adds a JSON property in the global object. This approach provides some big benefits: It lets you add great new HTML5 features to your web sites sooner. It lets the developer focus on writing to the up-and-coming standard rather than proprietary APIs. Where most one-off legacy code fixes tends to break down over time, well done polyfills will stop executing over time (as customer browsers natively support the feature) meaning polyfill code may not need to be tested against new browsers since they will execute the native methods instead. Your should also remember that Polyfills represent an entirely separate code path (and sometimes plug-in) that requires testing for support.  Also Polyfills tend to run on older browsers, which often have slower JavaScript performance.  As a result you might find that performance on older browsers is not comparable. When looking for Polyfills you can start by checking the Modernizr GitHub wiki or the HTML5 Please site. For an example of a polyfill consider a page that writes a few geometric shapes on a <canvas> <script src="jquery-1.7.1.min.js"><script> <script> $(document).ready(function () { drawCanvas(); }); function drawCanvas() { var context = $("canvas")[0].getContext('2d'); //background context.fillStyle = "#8B0000"; context.fillRect(5, 5, 300, 100); // emptybox context.strokeStyle = "#B0C4DE"; context.lineWidth = 4; context.strokeRect(20, 15, 80, 80); // circle context.arc(160, 55, 40, 0, Math.PI * 2, false); context.fillStyle = "#4B0082"; context.fill(); </script>   The result is a simple static canvas with a box & a circle:   …to enable this functionality on a pre-canvas browser we can find a polyfill.  A check on html5please.com references  FlashCanvas.  Pull down the zip and extract the files (flashcanvas.js, flash10canvas.swf, etc) to a directory on your site.  Then based on the documentation you need to add a single line to your original HTML file: <!--[if lt IE 9]><script src="flashcanvas.js"></script><![endif]—> …and you have canvas functionality!  The IE conditional comments ensure that the library is only loaded in browsers where it is useful, improving page load & processing time. Like all Polyfills, you should test to verify the functionality matches your expectations across browsers you need to support.  For instance the Flash Canvas home page advertises 70% support of HTML5 Canvas spec tests.

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• com.jcraft.jsch.JSchException: Auth cancel

  - by Dan Fabulich

  I'm trying to write an Ant script to retrieve an URL via port tunnelling. It works great when I use a password (the names xxxx'd out for privacy): <project default="main"> <target name="main"> <sshsession host="xxxx" username="xxxx" password="xxxx"> <LocalTunnel lport="1080" rhost="xxxx" rport="80"/> <sequential> <get src="http://localhost:1080/xxxx" dest="/tmp/xxxx"/> </sequential> </sshsession> </target> </project> But it doesn't work when I use a keyfile, like this: <sshsession host="xxxx" username="xxxx" keyfile="/Users/xxxx/.ssh/id_dsa" passphrase="xxxx"> <LocalTunnel lport="1080" rhost="xxxx" rport="80"/> <sequential> <get src="http://localhost:1080/xxxx" dest="/tmp/xxxx"/> </sequential> </sshsession> I get this exception: /tmp/build.xml:8: com.jcraft.jsch.JSchException: Auth cancel at com.jcraft.jsch.Session.connect(Session.java:451) at com.jcraft.jsch.Session.connect(Session.java:150) at org.apache.tools.ant.taskdefs.optional.ssh.SSHBase.openSession(SSHBase.java:223) I'm sure I'm using the correct keyfile (I've tried using the wrong name, which gives a legitimate FileNotFoundException). I can successfully ssh from the command line without being prompted for a password. I'm sure I'm using the correct passphrase for the keyfile. What's the cause of this error and what can I do about it?

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• WPF ObservableCollection CollectionView.CurrentChanged not firing.

  - by EL

  Hi folks, I have a problem with one of my ICollectionViews. The ICollectionView's CurrentChanged event i not firing. Please see my code below. XAML: <!-- Publication --> <TextBlock Name="tbkPublication" Text="{x:Static abConst:Print.tbkPublicationText}" Grid.Row="0" Grid.Column="0" Margin="3" ></TextBlock> <ComboBox Grid.Column="1" Grid.Row="0" Margin="3" Name="cmbPublication" BorderThickness="1" ItemsSource="{Binding Path=EnterpriseList}" DisplayMemberPath="Name" SelectedValuePath="Value" SelectedIndex="0" IsSynchronizedWithCurrentItem="True" /> <!-- Distribution Area Region --> <TextBlock Name="tbkDistributionArea" Text="{x:Static abConst:Print.tbkDistributionAreaText}" Grid.Row="1" Grid.Column="0" Margin="3" ></TextBlock> <ComboBox Grid.Column="1" Grid.Row="1" Margin="3" Name="cmbDistributionArea" BorderThickness="1" ItemsSource="{Binding Path=ZonesList}" DisplayMemberPath="Name" SelectedValuePath="Value" SelectedIndex="0" IsSynchronizedWithCurrentItem="True" /> AND C# (ViewModel) #region Properties public ObservableCollection<GenericNameValuePair<int, string>> EnterpriseList { get { return _abEnterpriseList; } set { _abEnterpriseList = value; } } public ObservableCollection<GenericNameValuePair<int, string>> ZonesList { get { return _abZonesList; } set { _abZonesList = value; } } #endregion private void InitCollections() { _collectionViewEnterprise = CollectionViewSource.GetDefaultView(EnterpriseList); _collectionViewZone = CollectionViewSource.GetDefaultView(ZonesList); //Replace if(_collectionViewEnterprise == null) throw new NullReferenceException("Enterprise collectionView is null."); if (_collectionViewZone == null) throw new NullReferenceException("Zone collectionView is null."); _collectionViewEnterprise.CurrentChanged += new EventHandler(OnCollectionViewEnterpriseCurrentChanged); _collectionViewZone.CurrentChanged += new EventHandler(OnCollectionViewZoneCurrentChanged); } Please help. Thanks in advance.

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• PyQt4 and QTableView with spinbox and checkbox

  - by ekapek

  Hi, I have a QTableView with QSqlTableModel and with 3 columns, now I need to have: - second column: spinbox after clicked to edit - third column: checkbox (displayed center) My code: class SpinBoxDelegate(QtGui.QItemDelegate): def createEditor(self, parent, option, index): editor = QtGui.QSpinBox(parent) editor.setMinimum(0) editor.setMaximum(100) print 'spinbox' return editor def setEditorData(self, spinBox, index): value = index.model().data(index, QtCore.Qt.EditRole).toInt()[0] spinBox.setValue(value) def setModelData(self, spinBox, model, index): spinBox.interpretText() value = spinBox.value() model.setData(index, value, QtCore.Qt.EditRole) def updateEditorGeometry(self, editor, option, index): editor.setGeometry(option.rect) class myQSqlTableModel(QtSql.QSqlTableModel): def flags(self,index): result = QtSql.QSqlTableModel.flags(self,index); if index.column() == 2: result |= QtCore.Qt.ItemIsUserCheckable return result def data(self,index,role): if not index.isValid: return QtCore.QVariant() value = QtSql.QSqlTableModel.data(self, index, role) if index.column() == 2: if role == QtCore.Qt.CheckStateRole: return QtCore.Qt.Unchecked if QtSql.QSqlTableModel.data(self, index).toInt()[0] else QtCore.Qt.Checked elif role == QtCore.Qt.DisplayRole: return QtCore.QVariant() return value and self.model = myQSqlTableModel(self) self.model.setTable("person") self.model.setEditStrategy(QtSql.QSqlTableModel.OnManualSubmit) self.model.select(): self.model.setHeaderData(0, QtCore.Qt.Horizontal, self.tr("ID")) self.model.setHeaderData(1, QtCore.Qt.Horizontal, self.tr("A")) self.model.setHeaderData(2, QtCore.Qt.Horizontal, self.tr("B")) self.view = QtGui.QTableView() self.view.setModel(self.model) self.view.setSortingEnabled(True) spinDelegate = SpinBoxDelegate() self.view.setItemDelegateForColumn(1,spinDelegate) but it does't work: spinbox don't show after click and checkbox can't be clicked and is aligned to left Any help?

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• Python Tkinter Tix: How to use ScrolledWindow with grid in Tix NoteBook

  - by Sano98

  Hi guys, I'm adding several widgets to a Frame which is located in a tix.NoteBook. When there are too much widgets to fit in the window, I want to use a scrollbar, so I put tix.ScrolledWindow inside that Frame and add my widgets to this ScrolledWindow instead. The problem is that when using the grid() geometry manager, the scrollbar appears, but it is not working (The drag bar occupies the whole scroll bar). from Tkinter import * import Tix class Window: def __init__(self, root): self.labelList = [] self.notebook = Tix.NoteBook(root, ipadx=3, ipady=3) self.notebook.add('sheet_1', label="Sheet 1", underline=0) self.notebook.add('sheet_2', label="Sheet 2", underline=0) self.notebook.add('sheet_3', label="Sheet 3", underline=0) self.notebook.pack() #self.notebook.grid(row=0, column=0) tab1=self.notebook.sheet_1 tab2=self.notebook.sheet_2 tab3=self.notebook.sheet_3 self.myMainContainer = Frame(tab1) self.myMainContainer.pack() #self.myMainContainer.grid(row=0, column=0) scrwin = Tix.ScrolledWindow(self.myMainContainer, scrollbar='y') scrwin.pack() #scrwin.grid(row=0, column=0) self.win = scrwin.window for i in range (100): self.labelList.append((Label(self.win))) self.labelList[-1].config(text= "Bla", relief = SUNKEN) self.labelList[-1].grid(row=i, column=0, sticky=W+E) root = Tix.Tk() myWindow = Window(root) root.mainloop() Whenever I change at least one of the geometry managers from pack() to grid(), the problem occurs. (Actually, I'd prefer using grid() for all containers.) When I don't use the NoteBook widget, the problem does not occur either. The other examples here all seem to rely on pack(). Any ideas? Many thanks, Sano

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• How to get selected row index in JSF datatable?

  - by Nitesh Panchal

  I have a databale on index.xhtml <h:dataTable style="border: solid 2px black;" value="#{IndexBean.bookList}" var="item" binding="#{IndexBean.datatableBooks}"> <h:column> <h:commandButton value="Edit" actionListener="#{IndexBean.editBook}"> <f:param name="index" value="#{IndexBean.datatableBooks.rowIndex}"/> </h:commandButton> </h:column> </h:dataTable> My bean: @ManagedBean(name="IndexBean") @ViewScoped public class IndexBean implements Serializable { private HtmlDataTable datatableBooks; public HtmlDataTable getDatatableBooks() { return datatableBooks; } public void setDatatableBooks(HtmlDataTable datatableBooks) { this.datatableBooks = datatableBooks; } public void editBook() throws IOException{ int index = Integer.parseInt(FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("index").toString()); System.out.println(index); } } My problem is that I always get the same index in server log even though I click the different edit buttons. Imagine that there is one collection which is supplied to the datatable. I have not shown that in bean. If I change scope from ViewScope to RequestScope it works fine. What can be the problem with @ViewScoped? Thanks in advance :) EDIT: <h:column> <h:commandButton value="Edit" actionListener="#{IndexBean.editBook}" /> </h:column> public void editBook(ActionEvent ev) throws IOException{ if (ev.getSource() != null && ev.getSource() instanceof HtmlDataTable) { HtmlDataTable objHtmlDataTable = (HtmlDataTable) ev.getSource(); System.out.println(objHtmlDataTable.getRowIndex()); } }

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• Creating a Sharepoint Development Environment from an Existing Production Environment

  - by Starky

  I have very little experience using Sharepoint but a good amount using Visual Studio 2008, SQL Server 2005, Windows Server 2003 and IIS6. I need to create a development environment for a SharePoint 2007 system that will be used internally. The system is already deployed over two servers - one of the servers simply holds the database and everything else is on the other server. We are also using WSS 3.0. I have created a Virtual Machine with all the required software including a clean installation of SharePoint Server 2007 and I wish to use this single Virtual Machine as the development environment. Right now there are no custom assemblies being used on the production server as far as I am aware. There are 3 websites, one over port 80 for user accesss, one over a custom port for central administration, and one over another custom port. Not sure what the last one is for but my blank instance of Sharepoint on my Virtual Machine also has something similar. I attempted to use the STSADM tool to backup and restore these 3 sites from my production environment to my development environment and while the operations completed succesfully, the central administration site in my development environment acted strangely and I could not access port 80 - I did not seem to have correct credentials for it. I suspected that it would not have been so simple so could I please have advice on how to create my development environment so that I can use it to deploy updates to the production one.

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• WPF - How to bind a DataGridTemplateColumn

  - by Andy T

  Hi, I am trying to get the name of the property associated with a particular DataGridColumn, so that I can then do some stuff based on that. This function is called when the user clicks context menu item on the column's header... This is fine for the out-of-the-box ready-rolled column types like DataGridTextColumn, since they are bound, but the problem is that some of my columns are DataGridTemplateColumns, which are not bound. private void GroupByField_Click (object sender, RoutedEventArgs e){ MenuItem mi = (MenuItem)sender; ContextMenu cm = (ContextMenu) mi.Parent; DataGridColumnHeader dgch = (DataGridColumnHeader) cm.PlacementTarget; DataGridBoundColumn dgbc = (DataGridBoundColumn) dgch.Column; Binding binding = (Binding) dgbc.Binding; string BoundPropName = binding.Path.Path; //Do stuff based on bound property name here... } So, take for example my 'Name' column... it's a DataGridTemplateColumn (since it has an image and some other stuff in there). Therefore, it is not actually bound to the 'Name' property... but I would like to be, so that the above code will work. My question is two-part, really: 1) Is it possible to make a DataGridTemplateColumn be BOUND, so that the above code would work? Can I bind it somehow to a property? 2) Or do I need to something entirely different, and change the code above? Thanks in advance! AT

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• SSRS 2008 Report Manager Error

  - by Nick

  I have just installed SQL Server 2008 including Reporting Services on Windows Server 2003. I'm having a problem though accessing the Report Manager. When the Reporting Service is first started I can access it fine but after maybe an hour when I try and access it I get an error saying: Unable to connect to the remote server. The reporting service is still running at this point. I can connect to it through Reporting Services Configuration Manager and clicking on the Web Service URL gives a directory listing (I assume that is correct behaviour). If I stop and start the service through Reporting Services Configuration Manager then I can access Report Manager once again (although in maybe an hour I will get the same error once again). I've installed the latest SP1 service pack. I'm using the same domain account to run all the SQL services. The report server is set to use the default ReportServer virtual directory, is set to IP address All Assigned, TCP Port 80 and no SSL certificate. The report manager is set to use the default Reports virtual directory, IP address All Assigned, TCP Port 80 and no SSL certificates. In the log file I get an error: Unable to connect to remote server HTTP status code 500 An attempt was made to access a socket in a way forbidden by its access permissions. Does anyone have any idea why this is happening? I've searched the net but haven't been able to find a solution.

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• how to close colorbox within iframe?

  - by Ashish Rajan

  i have a page manageGroup.php, where user can also add member to group. I used colorbox to show the addGroupMember.php. Now i need to close that colorbox once i have done submitting the form. javascript i am using in manageGroup.php <script language="javascript" type="text/javascript" src="js/jquery-1.3.2.js"></script> <script type="text/javascript" src="js/dropdown.js"></script> <script type="text/javascript" src="js/jquery.colorbox.js"></script> <script type="text/javascript"> $(document).ready(function(){ $(".iframe").colorbox({width:"80%", height:"80%", iframe:true}); }); </script> The link i am using to open colorbox <a class="iframe" href="addGMember.php?id=<?php echo base64_encode($fetch->g_id)?>">Add Member</a> the code in addGroupMember.php is like this:- if($_POST['add']=="Go") { $gid = $_POST['id']; $ii=0; $insert = "INSERT INTO ".DBGMEMBER." (gm_g_id,gm_m_id) VALUES "; foreach($_POST['gMember'] as $gMember) { if($ii==0) { $insert .= " ('".$gid."' , '".$gMember."')"; } else { $insert .= " ,('".$gid."' , '".$gMember."')"; } $ii++; } $db->execute($insert);// after this i want to close the colorbox echo "<script>parent.$.fn.colorbox.close(); </script>";// code i used, but not working }

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• Usinng svnadmin dump to revert the latest revision committed

  - by Wux

  What I need is that the latest (mistake) revision being reverted and that the repository does not store it in anyway. That is, I'm trying to erase the latest revision out of existence, NOT trying to fix things by coming back to the latest-1 revision. In other words, I want to avoid the repository growing in size. Suppose head revision is 100. I knew that the suggested answer is that svnadmin dump -r0:80 old-repo | svnadmin load --force-uuid new-repo. What I'm confusing myself about is why not svnadmin dump -r81:100 old-repo Why the first and not the second solution? I suppose svnadmin dump will erase the repository completely? And keeping only revision 0 - 80 in a dump file? Is my understanding of "taking a part out of the repository into a dump file" about svnadmin dump completely wrong? (That is revision 81 - 100 is still there) Sincere apologies if this has been asked. I did spend some time searching though no specific things about this were found. A topic link in case I miss it would be greatly appreciated.

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• Rails: Single Table Inheritance and models subdirectories

  - by Chris

  I have a card-game application which makes use of Single Table Inheritance. I have a class Card, and a database table cards with column type, and a number of subclasses of Card (including class Foo < Card and class Bar < Card, for the sake of argument). As it happens, Foo is a card from the original printing of the game, which Bar is a card from an expansion. In an attempt to rationalise my models, I have created a directory structure like so: app/ + models/ + card.rb + base_game/ + foo.rb + expansion/ + bar.rb And modified environment.rb to contain: Rails::Initializer.run do |config| config.load_paths += Dir["#{RAILS_ROOT}/app/models/**"] end However, when my reads a card from the database, Rails throws the following exception: ActiveRecord::SubclassNotFound (The single-table inheritance mechanism failed to locate the subclass: 'Foo'. This error is raised because the column 'type' is reserved for storing the class in case of inheritance. Please rename this column if you didn't intend it to be used for storing the inheritance class or overwrite Card.inheritance_column to use another column for that information.) Is it possible to make this work, or am I doomed to a flat directory structure?

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• JPA Lookup Hierarchy Mapping

  - by Andy Trujillo

  Given a lookup table: | ID | TYPE | CODE | DESCRIPTION | | 1 | ORDER_STATUS | PENDING | PENDING DISPOSITION | | 2 | ORDER_STATUS | OPEN | AWAITING DISPOSITION | | 3 | OTHER_STATUS | OPEN | USED BY OTHER ENTITY | If I have an entity: @MappedSuperclass @Table(name="LOOKUP") @Inheritance(strategy=InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name="TYPE", discriminatorType=DiscriminatorType.STRING) public abstract class Lookup { @Id @Column(name="ID") int id; @Column(name="TYPE") String type; @Column(name="CODE") String code; @Column(name="DESC") String description; ... } Then a subclass: @Entity @DiscriminatorValue("ORDER_STATUS") public class OrderStatus extends Lookup { } The expectation is to map it: @Entity @Table(name="ORDERS") public class OrderVO { ... @ManyToOne @JoinColumn(name="STATUS", referencedColumnName="CODE") OrderStatus status; ... } So that the CODE is stored in the database. I expected that if I wrote: OrderVO o = entityManager.find(OrderVO.class, 123); the SQL generated using OpenJPA would look something like: SELECT t0.id, ..., t1.CODE, t1.TYPE, t1.DESC FROM ORDERS t0 LEFT OUTER JOIN LOOKUP t1 ON t0.STATUS = t1.CODE AND t1.TYPE = 'ORDER_STATUS' WHERE t0.ID = ? But the actual SQL that gets generated is missing the AND t1.TYPE = 'ORDER_STATUS' This causes a problem when the CODE is not unique. Is there a way to have the discriminator included on joins or am I doing something wrong here?

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