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• JAVA : How to get the positions of all matches in a String?

  - by user692704

  I have a text document and a query (the query could be more than one word). I want to find the position of all occurrences of the query in the document. I thought of the documentText.indexOf(query) and using regular expression but I could not make it work. I end up with the following method: First, I have create a dataType called QueryOccurrence public class QueryOccurrence implements Serializable{ public QueryOccurrence(){} private int start; private int end; public QueryOccurrence(int nameStart,int nameEnd,String nameText){ start=nameStart; end=nameEnd; } public int getStart(){ return start; } public int getEnd(){ return end; } public void SetStart(int i){ start=i; } public void SetEnd(int i){ end=i; } } Then, I have used this datatype in the following method: public static List<QueryOccurrence>FindQueryPositions(String documentText, String query){ // Normalize do the following: lower case, trim, and remove punctuation String normalizedQuery = Normalize.Normalize(query); String normalizedDocument = Normalize.Normalize(documentText); String[] documentWords = normalizedDocument.split(" ");; String[] queryArray = normalizedQuery.split(" "); List<QueryOccurrence> foundQueries = new ArrayList(); QueryOccurrence foundQuery = new QueryOccurrence(); int index = 0; for (String word : documentWords) { if (word.equals(queryArray[0])){ foundQuery.SetStart(index); } if (word.equals(queryArray[queryArray.length-1])){ foundQuery.SetEnd(index); if((foundQuery.End()-foundQuery.Start())+1==queryArray.length){ //add the found query to the list foundQueries.add(foundQuery); //flush the foundQuery variable to use it again foundQuery= new QueryOccurrence(); } } index++; } return foundQueries; } This method return a list of all occurrence of the query in the document each one with its position. Could you suggest any easer and faster way to accomplish this task. Thanks

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• Editing XML file content with Python.

  - by Hooloovoo

  Hi, I am trying to use Python to read in an XML file containing some parameter names and values, e.g. ... <parameter name='par1'> <value>24</value> </parameter> <parameter name='par2'> <value>Blue/Red/Green</value> </parameter> ... and then pass it a dictionary with the parameter names {'par1':'53','par2':'Yellow/Pink/Black',...} and corresponding new values to replace the old ones in the XML file. The output should then overwrite the original XML file. At the moment I am converting the XML to a python dictionary and after some element comparison and regular expression handling, writing the output again in XML format. I am not too happy with this and was wondering whether anyone can recommend a more efficient way of doing it? Thanks.

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• '<=' operator is not working in sql server 2000

  - by Lalit

  Hello, Scenario is, database is in the maintenance phase. this database is not developed by ours developer. it is an existing database developed by the 'xyz' company in sql server 2000. This is real time database, where i am working now. I wanted to write the stored procedure which will retrieve me the records From date1 to date 2.so query is : Select * from MyTableName Where colDate>= '3-May-2010' and colDate<= '5-Oct-2010' and colName='xyzName' whereas my understanding I must get data including upper bound date as well as lower bound date. but somehow I am getting records from '3-May-2010' (which is fine but) to '10-Oct-2010' As i observe in table design , for ColDate, developer had used 'varchar' to store the date. i know this is wrong remedy by them. so in my stored procedure I have also used varchar parameters as @FromDate1 and @ToDate to get inputs for SP. this is giving me result which i have explained. i tried to take the parameter type as 'Datetime' but it is showing error while saving/altering the stored procedure that "@FromDate1 has invalid datatype", same for "@ToDate". situation is that, I can not change the table design at all. what i have to do here ? i know we can use user defined table in sql server 2008 , but there is version sql server 2000. which does not support the same. Please guide me for this scenario. **Edited** I am trying to write like this SP: CREATE PROCEDURE USP_Data (@Location varchar(100), @FromDate DATETIME, @ToDate DATETIME) AS SELECT * FROM dbo.TableName Where CAST(Dt AS DATETIME) >=@fromDate and CAST(Dt AS DATETIME)<=@ToDate and Location=@Location GO but getting Error: Arithmetic overflow error converting expression to data type datetime. in sql server 2000 What should be that ? is i am wrong some where ? also (202 row(s) affected) is changes every time in circular manner means first time sayin (122 row(s) affected) run again saying (80 row(s) affected) if again (202 row(s) affected) if again (122 row(s) affected) I can not understand what is going on ?

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• Is there any alternative way of writing this switch statement(C#3.0)

  - by Newbie

  Can it be done in a better way public static EnumFactorType GetFactorEnum(string str) { Standardization e = new Standardization(); switch (str.ToLower()) { case "beta": e.FactorType = EnumFactorType.BETA; break; case "bkp": e.FactorType = EnumFactorType.BOOK_TO_PRICE; break; case "yld": e.FactorType = EnumFactorType.DIVIDEND_YIELD; break; case "growth": e.FactorType = EnumFactorType.GROWTH; break; case "mean": e.FactorType = EnumFactorType.MARKET_CAP; break; case "momentum": e.FactorType = EnumFactorType.MOMENTUM; break; case "size": e.FactorType = EnumFactorType.SIZE; break; case "stat_fact1": e.FactorType = EnumFactorType.STAT_FACT_1; break; case "stat_fact2": e.FactorType = EnumFactorType.STAT_FACT_2; break; case "value": e.FactorType = EnumFactorType.VALUE; break; } return e.FactorType; } If I create a Static class(say Constatant) and declare variable like public static string BETA= "beta"; and then if I try to put that in the Case expression like Case Constants.BETA : e.FactorType = EnumFactorType.BETA; break; then the compiler will report error.(quite expected) So is there any other way?(I canot change the switch statement) Using C#3.0 Thanks

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• Taking item from string array that *might* be there

  - by AndyC

  Hi all, I have a string array, and it may contain an element with the text "mytext" within the string. eg: mystringarray { [0] => "hello world"; [1] => "some of mytext"; } I also have an array that doesn't have the mytext text in it. mystringarray { [0] => "hello world"; [1] => "some of notmy"; } My problem is when I use: string mytextdata = mystringarray.Single<string>(t => t.Contains("mytext")).ToString(); I get an exception for the second array as it can't find an element that matches the expression. Is there a quick way I can edit this one line to not throw an exception if it finds nothing, and instead just ignore? I have a lot of these lines and I don't want to have to wrap each in an if statement. Apologies if question isn't clear.

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• What does the $1$2$4 mean in this preg_replace?

  - by Taylor

  Got this function for ammending the query string and was wondering what the replacement part of the pre_replace meant (ie- $1$2$4). function add_querystring_var($url, $key, $value) { $url = preg_replace('/(.*)(\?|&)' . $key . '=[^&]+?(&)(.*)/i', '$1$2$4', $url . '&'); $url = substr($url, 0, -1); if (strpos($url, '?') === false) { return ($url . '?' . $key . '=' . $value); } else { return ($url . '&' . $key . '=' . $value); } } Not too familiar with regular expression stuff. I get the various parts to preg_replace but not 100% about the use of '$1$2$4' in the replacement part.

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• C# return and display syntax issue

  - by thatdude

  I am having trouble passing the return value from TheMethod() to Main and displaying the word if the if statement is passed as true. I have thought of two ways of doing this, neither has worked but I think I am missing synatx. Using a return ?; non void method and then displaying the returned value. Using a void method and actually writing out(example below) So yes I am new at this, however I have made so many iterations everything is blending together and I have forgot what I have tried. Any help on the syntax be great for either of these ways. Basically I need it to iterate numbers 1,2,3,4 and depending on if the current iteration matches an expression in the if statements it will display a word. Example: if (3 = i) { Console.WriteLine("Word"); } Code: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Proj5 { class Program { int i = 0; static void Main(int i) { for (i = 0; i < 101; i++) { Console.WriteLine("test"); } } string TheMethod(int i) { string f = "Word1"; string b = "Word2"; if (i == 3) { return f; } if (i == 5) { return b; } if (0 == (i % 3)) { return f; } if (0 == i % 5) { return b; } else { return b; } } } }

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• Credit card validation with regexp using test()

  - by Matt

  I'm trying to complete some homework and it appears the book might have gotten it wrong. I have a simple html page that allows user to pick a credit card in our case american express. The user then enters a number and evalutes that number based on a regular expression. My question ends up being when test() evaluates the number it returns a boolean or a string? I should then compare that string or boolean? True == true should fire off the code in a nested if statement. Heres what the book gives me as valid code: if(document.forms[0].cardName.value == "American Express") { var cardProtocol = new RegExp("^3[47][0-9]{13}$"); //REGEX ENTRY HERE if(cardProtocol.test(document.forms[0].cardNumber.value)) document.forms[0].ccResult.value = "Valid credit card number"; } The above code doesn't work in firefox. I've tried modifying it with 2 alerts to make sure the number is good and the boolean is good...and still no luck: if(document.forms[0].cardName.value == "American Express") { var cardProtocol = new RegExp("^3[47][0-9]{13}$"); //REGEX ENTRY HERE <------ alert(document.forms[0].cardNumber.value) alert(cardProtocol.test(document.forms[0].cardNumber.value)) if((cardProtocol.test(document.forms[0].cardNumber.value)) == true ) // <--Problem { document.forms[0].ccResult.value = "Valid credit card number"; } else { document.forms[0].ccResult.value = "Invalid credit card number"; } } Any ideas? the if loop is the culprit but I'm not figuring out why it is not working. Please throw up the code for the if loop! Thanks for the help!

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• C++11 decltype requires instantiated object

  - by snipes83

  I was experimenting a little with the C++11 standard and came up with this problem: In C++11 you can use auto and decltype to automatically get return type for a function as, for example the begin() and end() functions below: #include <vector> template <typename T> class Container { private: std::vector<T> v; public: auto begin() -> decltype(v.begin()) { return v.begin(); }; auto end() -> decltype(v.end()) { return v.end(); }; }; My problem here is that I have to declare the private vector<T> v before the public declarations which is against my coding style. I would like to declare all my private members after my public members. You have to declare the vector before the function declaration because the expression in decltype is a call to vector member function begin() and requires an instance of the object. Is there a way around this?

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• How to move a ruby on rails application to a new server

  - by ManiacZX

  I have a rails app on an old Ubuntu server I need to move onto a new machine. I haven't worked with ruby on rails so I don't really know anything about the structure of the app. I want to load this onto an Ubuntu 8.04 AMI on Amazon EC2 and am looking for any information regarding the migration process such as: Do I copy over the entire folder defined as the application root in the mongrel config (for ex: /u/apps/myapp/current) or just certain folders? Am I looking for trouble if I go with the latest versions of ruby and the various gems? Any general gotchas to look out for in the process. Current server information: root@webnode001:/# cat /proc/version Linux version 2.6.15-27-server (buildd@terranova) (gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)) #1 SMP Fri Dec 8 18:43:54 UTC 2006 root@webnode001:/# rails -v Rails 1.2.3 root@webnode001:/# mongrel_rails cluster::configure --version Version 1.0.1 root@webnode001:/# gem -v 0.9.0 root@webnode001:/# gem list -l *** LOCAL GEMS *** actionmailer (1.3.3, 1.2.5) Service layer for easy email delivery and testing. actionpack (1.13.3, 1.12.5) Web-flow and rendering framework putting the VC in MVC. actionwebservice (1.2.3, 1.1.6) Web service support for Action Pack. activerecord (1.15.3, 1.15.2, 1.14.4) Implements the ActiveRecord pattern for ORM. activesupport (1.4.2, 1.4.1, 1.3.1) Support and utility classes used by the Rails framework. cgi_multipart_eof_fix (2.1) Fix an exploitable bug in CGI multipart parsing which affects Ruby <= 1.8.5 when multipart boundary attribute contains a non-halting regular expression string. daemons (1.0.7, 1.0.5, 1.0.4, 1.0.2) A toolkit to create and control daemons in different ways eventmachine (0.7.2, 0.7.0) Ruby/EventMachine socket engine library fastercsv (1.2.0, 1.1.0) FasterCSV is CSV, but faster, smaller, and cleaner. fastthread (1.0) Optimized replacement for thread.rb primitives ferret (0.11.4) Ruby indexing library. gem_plugin (0.2.2, 0.2.1) A plugin system based only on rubygems that uses dependencies only mongrel (1.0.1, 0.3.13.4) A small fast HTTP library and server that runs Rails, Camping, Nitro and Iowa apps. mongrel_cluster (0.2.1) Mongrel plugin that provides commands and Capistrano tasks for managing multiple Mongrel processes. mysql (2.7) MySQL/Ruby provides the same functions for Ruby programs that the MySQL C API provides for C programs. piston (1.3.3) Piston is a utility that enables merge tracking of remote repositories. rails (1.2.3, 1.1.6) Web-application framework with template engine, control-flow layer, and ORM. rake (0.7.3, 0.7.1) Ruby based make-like utility. sources (0.0.1) This package provides download sources for remote gem installation swiftiply (0.5.1) A fast clustering proxy for web applications.

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• Nginx Proxying to Multiple IP Addresses for CMS' Website Preview

  - by Matthew Borgman

  First-time poster, so bear with me. I'm relatively new to Nginx, but have managed to figure out what I've needed... until now. Nginx v1.0.15 is proxying to PHP-FPM v.5.3.10, which is listening at http://127.0.0.1:9000. [Knock on wood] everything has been running smoothly in terms of hosting our CMS and many websites. Now, we've developed our CMS and configured Nginx such that each supported website has a preview URL (e.g. http://[WebsiteID].ourcms.com/) where the site can be, you guessed it, previewed in those situations where DNS doesn't yet resolve to our server, etc. Specifically, we use Nginx's Map module (http://wiki.nginx.org/HttpMapModule) and a regular expression in the server_name of the CMS' server{ } block to 1) lookup a website's primary domain name from its preview URL and then 2) forward the request to the "matched" primary domain. The corresponding Nginx configuration: map $host $h { 123.ourcms.com www.example1.com; 456.ourcms.com www.example2.com; 789.ourcms.com www.example3.com; } and server { listen [OurCMSIPAddress]:80; listen [OurCMSIPAddress]:443 ssl; root /var/www/ourcms.com; server_name ~^(.*)\.ourcms\.com$; ssl_certificate /etc/nginx/conf.d/ourcms.com.chained.crt; ssl_certificate_key /etc/nginx/conf.d/ourcms.com.key; location / { proxy_pass http://127.0.0.1/; proxy_set_header Host $h; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } } (Note: I do realize that the regex in the server_name should be "tighter" for security reasons and match only the format of the website ID (i.e. a UUID in our case).) This configuration works for 99% of our sites... except those that have a dedicated IP address for an installed SSL certificate. A "502 Bad Gateway" is returned for these and I'm unsure as to why. This is how I think the current configuration works for any requests that match the regex (e.g. http://123.ourcms.com/): Nginx looks up the website's primary domain from the mapping, and as a result of the proxy_pass http://127.0.0.1 directive, passes the request back to Nginx itself, which since the proxied request has a hostname corresponding to the website's primary domain name, via the proxy_set_header Host $h directive, Nginx handles the request as if it was as direct request for that hostname. Please correct me if I'm wrong in this understanding. Should I be proxying to those website's dedicated IP addresses? I tried this, but it didn't seem to work? Is there a setting in the Proxy module that I'm missing? Thanks for the help. MB

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• nginx rewrite rule to convert URL segments to query string parameters

  - by Nick

  I'm setting up an nginx server for the first time, and having some trouble getting the rewrite rules right for nginx. The Apache rules we used were: See if it's a real file or directory, if so, serve it, then send all requests for / to Director.php DirectoryIndex Director.php If the URL has one segment, pass it as rt RewriteRule ^/([a-zA-Z0-9\-\_]+)/$ /Director.php?rt=$1 [L,QSA] If the URL has two segments, pass it as rt and action RewriteRule ^/([a-zA-Z0-9\-\_]+)/([a-zA-Z0-9\-\_]+)/$ /Director.php?rt=$1&action=$2 [L,QSA] My nginx config file looks like: server { ... location / { try_files $uri $uri/ /index.php; } location ~ \.php$ { fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } } How do I get the URL segments into Query String Parameters like in the Apache rules above? UPDATE 1 Trying Pothi's approach: # serve static files directly location ~* ^.+\.(jpg|jpeg|gif|css|png|js|ico|html)$ { access_log off; expires 30d; } location / { try_files $uri $uri/ /Director.php; rewrite "^/([a-zA-Z0-9\-\_]+)/$" "/Director.php?rt=$1" last; rewrite "^/([a-zA-Z0-9\-\_]+)/([a-zA-Z0-9\-\_]+)/$" "/Director.php?rt=$1&action=$2" last; } location ~ \.php$ { fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } This produces the output No input file specified. on every request. I'm not clear on if the .php location gets triggered (and subsequently passed to php) when a rewrite in any block indicates a .php file or not. UPDATE 2 I'm still confused on how to setup these location blocks and pass the parameters. location /([a-zA-Z0-9\-\_]+)/ { fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME ${document_root}Director.php?rt=$1{$args}; include fastcgi_params; } UPDATE 3 It looks like the root directive was missing, which caused the No input file specified. message. Now that this is fixed, I get the index file as if the URL were / on every request regardless of the number of URL segments. It appears that my location regular expression is being ignored. My current config is: # This location is ignored: location /([a-zA-Z0-9\-\_]+)/ { fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index Director.php; set $args $query_string&rt=$1; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } location / { try_files $uri $uri/ /Director.php; } location ~ \.php$ { fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index Director.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; }

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• May 20th Links: ASP.NET MVC, ASP.NET, .NET 4, VS 2010, Silverlight

  - by ScottGu

  Here is the latest in my link-listing series.  Also check out my VS 2010 and .NET 4 series and ASP.NET MVC 2 series for other on-going blog series I’m working on. [In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu] ASP.NET MVC How to Localize an ASP.NET MVC Application: Michael Ceranski has a good blog post that describes how to localize ASP.NET MVC 2 applications. ASP.NET MVC with jTemplates Part 1 and Part 2: Steve Gentile has a nice two-part set of blog posts that demonstrate how to use the jTemplate and DataTable jQuery libraries to implement client-side data binding with ASP.NET MVC. CascadingDropDown jQuery Plugin for ASP.NET MVC: Raj Kaimal has a nice blog post that demonstrates how to implement a dynamically constructed cascading dropdownlist on the client using jQuery and ASP.NET MVC. How to Configure VS 2010 Code Coverage for ASP.NET MVC Unit Tests: Visual Studio enables you to calculate the “code coverage” of your unit tests.  This measures the percentage of code within your application that is exercised by your tests – and can give you a sense of how much test coverage you have.  Gunnar Peipman demonstrates how to configure this for ASP.NET MVC projects. Shrinkr URL Shortening Service Sample: A nice open source application and code sample built by Kazi Manzur that demonstrates how to implement a URL Shortening Services (like bit.ly) using ASP.NET MVC 2 and EF4.  More details here. Creating RSS Feeds in ASP.NET MVC: Damien Guard has a nice post that describes a cool new “FeedResult” class he created that makes it easy to publish and expose RSS feeds from within ASP.NET MVC sites. NoSQL with MongoDB, NoRM and ASP.NET MVC Part 1 and Part 2: Nice two-part blog series by Shiju Varghese on how to use MongoDB (a document database) with ASP.NET MVC.  If you are interested in document databases also make sure to check out the Raven DB project from Ayende. Using the FCKEditor with ASP.NET MVC: Quick blog post that describes how to use FCKEditor – an open source HTML Text Editor – with ASP.NET MVC. ASP.NET Replace Html.Encode Calls with the New HTML Encoding Syntax: Phil Haack has a good blog post that describes a useful way to quickly update your ASP.NET pages and ASP.NET MVC views to use the new <%: %> encoding syntax in ASP.NET 4.  I blogged about the new <%: %> syntax – it provides an easy and concise way to HTML encode content. Integrating Twitter into an ASP.NET Website using OAuth: Scott Mitchell has a nice article that describes how to take advantage of Twiter within an ASP.NET Website using the OAuth protocol – which is a simple, secure protocol for granting API access. Creating an ASP.NET report using VS 2010 Part 1, Part 2, and Part 3: Raj Kaimal has a nice three part set of blog posts that detail how to use SQL Server Reporting Services, ASP.NET 4 and VS 2010 to create a dynamic reporting solution. Three Hidden Extensibility Gems in ASP.NET 4: Phil Haack blogs about three obscure but useful extensibility points enabled with ASP.NET 4. .NET 4 Entity Framework 4 Video Series: Julie Lerman has a nice, free, 7-part video series on MSDN that walks through how to use the new EF4 capabilities with VS 2010 and .NET 4.  I’ll be covering EF4 in a blog series that I’m going to start shortly as well. Getting Lazy with System.Lazy: System.Lazy and System.Lazy<T> are new features in .NET 4 that provide a way to create objects that may need to perform time consuming operations and defer the execution of the operation until it is needed.  Derik Whittaker has a nice write-up that describes how to use it. LINQ to Twitter: Nifty open source library on Codeplex that enables you to use LINQ syntax to query Twitter. Visual Studio 2010 Using Intellitrace in VS 2010: Chris Koenig has a nice 10 minute video that demonstrates how to use the new Intellitrace features of VS 2010 to enable DVR playback of your debug sessions. Make the VS 2010 IDE Colors look like VS 2008: Scott Hanselman has a nice blog post that covers the Visual Studio Color Theme Editor extension – which allows you to customize the VS 2010 IDE however you want. How to understand your code using Dependency Graphs, Sequence Diagrams, and the Architecture Explorer: Jennifer Marsman has a nice blog post describes how to take advantage of some of the new architecture features within VS 2010 to quickly analyze applications and legacy code-bases. How to maintain control of your code using Layer Diagrams: Another great blog post by Jennifer Marsman that demonstrates how to setup a “layer diagram” within VS 2010 to enforce clean layering within your applications.  This enables you to enforce a compiler error if someone inadvertently violates a layer design rule. Collapse Selection in Solution Explorer Extension: Useful VS 2010 extension that enables you to quickly collapse “child nodes” within the Visual Studio Solution Explorer.  If you have deeply nested project structures this extension is useful. Silverlight and Windows Phone 7 Building a Simple Windows Phone 7 Application: A nice tutorial blog post that demonstrates how to take advantage of Expression Blend to create an animated Windows Phone 7 application. If you haven’t checked out my Windows Phone 7 Twitter Tutorial I also recommend reading that. Hope this helps, Scott P.S. If you haven’t already, check out this month’s "Find a Hoster” page on the www.asp.net website to learn about great (and very inexpensive) ASP.NET hosting offers.

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• Quick guide to Oracle IRM 11g: Server configuration

  - by Simon Thorpe

  Quick guide to Oracle IRM 11g index Welcome to the second article in this quick quide to Oracle IRM 11g. Hopefully you've just finished the first article which takes you through deploying the software onto a Linux server. This article walks you through the configuration of this new service and contains a subset of information from the official documentation and is focused on installing the server on Oracle Enterprise Linux. If you are planning to deploy on a non-Linux platform, you will need to reference the documentation for platform specific information. Contents Introduction Create IRM WebLogic Domain Starting the Admin Server and initial configuration Introduction In the previous article the database was prepared, the WebLogic Application Server installed and the files required for an IRM server installed. But we don't actually have a configured system yet. We need to now create a WebLogic Domain in which the IRM server will run, then configure some of the settings and crypography so that we can create a context and be ready to seal some content and test it all works. This article doesn't cover the configuration of SSL communication from client to server. This is quite a big topic and a separate article has been dedicated for this area. In these articles I also use the hostname, irm.company.internal to reference the IRM server and later on use the hostname irm.company.com in reference to the public facing service. Create IRM WebLogic Domain First step is creating the WebLogic domain, in a console switch to the newly created IRM installation folder as shown below and we will run the domain configuration wizard. [oracle@irm /]$ cd /oracle/middleware/Oracle_IRM/common/bin [oracle@irm bin]$ ./config.sh First thing the wizard will ask is if you wish to create a new or extend an existing domain. This guide is creating a standalone system so you should select to create a new domain. Next step is to choose what technologies from the Oracle ECM Suite you wish this domain to host. You are only interested in selecting the option "Oracle Information Rights Management". When you select this check box you will notice that it also selects "Oracle Enterprise Manager" and "Oracle JRF" as these are dependencies of the IRM server. You then need to specify where you wish to place the domain files. I usually just change the domain name from base_domain or irm_domain and leave the others with their defaults. Now the domain will have a single user initially and by default this user is called "weblogic". I usually change this account name to "sysadmin" or "administrator", but in this guide lets just accept the default. With respects to the next dialog, again for eval or dev reasons, leave the server startup mode as development. The JDK should also be automatically detected. We now need to provide details of the database. This guide is using the Oracle 11gR2 database and the settings I used can be seen in the image to the right. There is a lot of configuration that can now be done for the admin server, any managed servers and where the deployments reside. In this guide I am leaving all of these to their defaults so do not check any of the boxes. However I will on this blog be detailing later how you can go back and setup things such as automated startup of an IRM server which require changes to these default settings. But for now, lets leave it all alone and just click next. Now we are ready to install. Note that from this dialog you can scroll the left window and see there are going to be two servers created from the defaults. The AdminServer which is where you modify settings for the WebLogic Server and also hosts the Oracle Enterprise Manager for IRM which allows to monitor the IRM service performance and also make service related settings (which we shortly do below) and the IRM_server1 which hosts the actual IRM services themselves. So go right ahead and hit create, the process is pretty quick and usually under 10 minutes. When the domain creation ends, it will give you the URL to the admin server. It's worth noting this down and the URL is usually; http://irm.company.internal:7001 Starting the Admin Server and initial configuration First thing to do is to start the WebLogic Admin server and review the initial IRM server settings. In this guide we are going to run the Admin server and IRM server in console windows, in another article I will discuss running these as background services. So for now, start a console and run the Admin server by doing the following. cd /oracle/middleware/user_projects/domains/irm_domain/ ./startWebLogic.sh Wait for the server to start, you are looking for the following line to be reported in the console window. <BEA-00360><Server started in RUNNING mode> First step is configuring the IRM service via Enterprise Manager. Now that the Admin server is running you can point a browser at http://irm.company.internal:7001/em. Login with the username and password you supplied when you created the domain. In Enterprise Manager the IRM service administrator is able to make server wide configuration. However finding where to access the pages with these settings can be a bit of a challenge. After logging in on the left you'll see a tree containing elements of the Enterprise Manager farm Farm_irm_domain. Open up Content Management, then Information Rights Management and finally select the IRM node. On the right then select the IRM menu item, navigate to the Administration section and now we have four options, for now, we are just going to look at General Settings. The image on the right proves that a picture is worth a thousand words (or 113 in this case). The General Settings page allows you to set the cryptographic algorithms used for protecting sealed content. Unless you have a burning need to increase the key lengths or you need to comply to a regulation or government mandate, AES192 is a good start. You can change this later on without worry. The most important setting here we need to make is the Server URL. In this blog article I go over why this URL is so important, basically every single piece of content you protect with Oracle IRM is going to have this URL embedded in it, so if it's wrong or unresolvable, then nobody can open the secured documents. Note that in our environment we have yet to do any SSL configuration of the service. If you intend to build a server without SSL, then use http as the protocol instead of https. But I would recommend using SSL and setting this up is described in the next article. I would also probably up the device count from 1 to 3. This means that any user can retrieve rights to access content onto 3 computers at any one time. The default of 1 doesn't really make sense in development, evaluation nor even production environments and my experience is that 3 is a better number. Next step is to create the keystore for the IRM server. When a classification (called a context) is created, Oracle IRM generates a unique set of symmetric keys which are used to secure the content itself. These keys are then encrypted with a set of "wrapper" asymmetric cryptography keys which are stored externally to the server either in a Java Key Store or a HSM. These keys need to be generated and the following shows my commands and the resulting output. I have greyed out the responses from the commands so you can see the input a little easier. [oracle@irmsrv ~]$ cd /oracle/middleware/wlserver_10.3/server/bin/ [oracle@irmsrv bin]$ ./setWLSEnv.sh CLASSPATH=/oracle/middleware/patch_wls1033/profiles/default/sys_manifest_classpath/weblogic_patch.jar:/oracle/middleware/patch_ocp353/profiles/default/sys_manifest_classpath/weblogic_patch.jar:/usr/java/jdk1.6.0_18/lib/tools.jar:/oracle/middleware/wlserver_10.3/server/lib/weblogic_sp.jar:/oracle/middleware/wlserver_10.3/server/lib/weblogic.jar:/oracle/middleware/modules/features/weblogic.server.modules_10.3.3.0.jar:/oracle/middleware/wlserver_10.3/server/lib/webservices.jar:/oracle/middleware/modules/org.apache.ant_1.7.1/lib/ant-all.jar:/oracle/middleware/modules/net.sf.antcontrib_1.1.0.0_1-0b2/lib/ant-contrib.jar: PATH=/oracle/middleware/wlserver_10.3/server/bin:/oracle/middleware/modules/org.apache.ant_1.7.1/bin:/usr/java/jdk1.6.0_18/jre/bin:/usr/java/jdk1.6.0_18/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/home/oracle/bin Your environment has been set. [oracle@irmsrv bin]$ cd /oracle/middleware/user_projects/domains/irm_domain/config/fmwconfig/ [oracle@irmsrv fmwconfig]$ keytool -genkeypair -alias oracle.irm.wrap -keyalg RSA -keysize 2048 -keystore irm.jks Enter keystore password: Re-enter new password: What is your first and last name? [Unknown]: Simon Thorpe What is the name of your organizational unit? [Unknown]: Oracle What is the name of your organization? [Unknown]: Oracle What is the name of your City or Locality? [Unknown]: San Francisco What is the name of your State or Province? [Unknown]: CA What is the two-letter country code for this unit? [Unknown]: US Is CN=Simon Thorpe, OU=Oracle, O=Oracle, L=San Francisco, ST=CA, C=US correct? [no]: yes Enter key password for (RETURN if same as keystore password): At this point we now have an irm.jks in the directory /oracle/middleware/user_projects/domains/irm_domain/config/fmwconfig. The reason we store it here is this folder would be backed up as part of a domain backup. As with any cryptographic technology, DO NOT LOSE THESE KEYS OR THIS KEY STORE. Once you've sealed content against a context, the keys will be wrapped with these keys, lose these keys, and you can't get access to any secured content, pretty important. Now we've got the keys created, we need to go back to the IRM Enterprise Manager and set the location of the key store. Going back to the General Settings page in Enterprise Manager scroll down to Keystore Settings. Leave the type as JKS but change the location to; /oracle/Middleware/user_projects/domains/irm_domain/config/fmwconfig/irm.jks and hit Apply. The final step with regards to the key store is we need to tell the server what the password is for the Java Key Store so that it can be opened and the keys accessed. Once more fire up a console window and run these commands (again i've greyed out the clutter to see the commands easier). You will see dummy passed into the commands, this is because the command asks for a username, but in this instance we don't use one, hence the value dummy is passed and it isn't used. [oracle@irmsrv fmwconfig]$ cd /oracle/middleware/Oracle_IRM/common/bin/ [oracle@irmsrv bin]$ ./wlst.sh ... lots of settings fly by... Welcome to WebLogic Server Administration Scripting Shell Type help() for help on available commands wls:/offline>connect('weblogic','password','t3://irmsrv.us.oracle.com:7001') Connecting to t3://irmsrv.us.oracle.com:7001 with userid weblogic ... Successfully connected to Admin Server 'AdminServer' that belongs to domain 'irm_domain'. Warning: An insecure protocol was used to connect to the server. To ensure on-the-wire security, the SSL port or Admin port should be used instead. wls:/irm_domain/serverConfig>createCred("IRM","keystore:irm.jks","dummy","password") Location changed to domainRuntime tree. This is a read-only tree with DomainMBean as the root. For more help, use help(domainRuntime)wls:/irm_domain/serverConfig>createCred("IRM","key:irm.jks:oracle.irm.wrap","dummy","password") Already in Domain Runtime Tree wls:/irm_domain/serverConfig> At last we are now ready to fire up the IRM server itself. The domain creation created a managed server called IRM_server1 and we need to start this, use the following commands in a new console window. cd /oracle/middleware/user_projects/domains/irm_domain/bin/ ./startManagedWebLogic.sh IRM_server1 This will start up the server in the console, unlike the Admin server, you need to provide the username and password for the service to start. Enter in your weblogic username and password when prompted. You can change this behavior by putting the password into a boot.properties file, read more about this in the WebLogic Server documentation. Once running, wait until you see the line; <Notice><WebLogicServer><BEA-000360><Server started in RUNNING mode> At this point we can now login to the Oracle IRM Management Website at the URL. http://irm.company.internal:1600/irm_rights/ The server is just configured for HTTP at the moment, no SSL involved. Just want to ensure we can get a working system up and running. You should now see a login like the image on the right and you can now login using your weblogic username and password. The next article in this guide goes over adding SSL and now testing your server by actually adding a few users, sealing some content and opening this content as a user.

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• March 21st Links: ASP.NET, ASP.NET MVC, AJAX, Visual Studio, Silverlight

  - by ScottGu

  Here is the latest in my link-listing series. If you haven’t already, check out this month’s "Find a Hoster” page on the www.asp.net website to learn about great (and very inexpensive) ASP.NET hosting offers.  [In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu] ASP.NET URL Routing in ASP.NET 4: Scott Mitchell has a nice article that talks about the new URL routing features coming to Web Forms applications with ASP.NET 4.  Also check out my previous blog post on this topic. Control of Web Control ClientID Values in ASP.NET 4: Scott Mitchell has a nice article that describes how it is now easy to control the client “id” value emitted by server controls with ASP.NET 4. Web Deployment Made Awesome: Very nice MIX10 talk by Scott Hanselman on the new web deployment features coming with VS 2010, MSDeploy, and .NET 4.  Makes deploying web applications much, much easier. ASP.NET 4’s Browser Capabilities Support: Nice blog post by Stephen Walther that talks about the new browser definition capabilities support coming with ASP.NET 4. Integrating Twitter into an ASP.NET Website: Nice article by Scott Mitchell that demonstrates how to call and integrate Twitter from within your ASP.NET applications. Improving CSS with .LESS: Nice article by Scott Mitchell that describes how to optimize CSS using .LESS – a free, open source library. ASP.NET MVC Upgrading ASP.NET MVC 1 applications to ASP.NET MVC 2: Eilon Lipton from the ASP.NET team has a nice post that describes how to easily upgrade your ASP.NET MVC 1 applications to ASP.NET MVC 2.  He has an automated tool that makes this easy. Note that automated MVC upgrade support is also built-into VS 2010.  Use the tool in this blog post for updating existing MVC projects using VS 2008. Advanced ASP.NET MVC 2: Nice video talk by Brad Wilson of the ASP.NET MVC team.  In it he describes some of the more advanced features in ASP.NET MVC 2 and how to maximize your productivity with them. Dynamic Select Lists with ASP.NET MVC and jQuery: Michael Ceranski has a nice blog post that describes how to dynamically populate dropdownlists on the client using AJAX. AJAX Microsoft AJAX Minifier: We recently shipped an updated minifier utility that allows you to shrink/minify both JavaScript and CSS files – which can improve the performance of your web applications.  You can run this either manually as a command-line tool or now automatically integrate it using a Visual Studio build task.  You can download it for free here. Visual Studio VS 2010 Tip: Quickly Closing Documents: Nice blog post that describes some techniques for optimizing how windows are closed with the new VS 2010 IDE. Collpase to Definitions with Outlining: Nice tip from Zain on how to collapse your code editor to outline mode using Ctrl + M, Ctrl + O.  Also check out his post on copy/paste with outlining here. $299 VS 2010 Upgrade Offer for VS 2005/2008 Standard Users: Soma blogs about a nice VS 2010 upgrade offer you can take advantage of if you have VS 2005 or VS 2008 Standard editions.  For $299 you can upgrade to VS 2010 Professional edition. Dependency Graphics: Jason Zander (who runs the VS team) has a nice blog post that covers the new dependency graph support within VS 2010.  This makes it easier to visualize the dependencies within your application.  Also check out this video here. Layer Validation: Jason Zander has a nice blog post that talks about the new layer validation features in VS 2010.  This enables you to enforce cleaner layering within your projects and solutions.  VS 2010 Profiler Blog: The VS 2010 Profiler Team has their own blog and on it you can find a bunch of nice posts from the last few months that talk about a lot of the new features coming with VS 2010’s Profiler support.  Some really nice features coming. Silverlight Silverlight 4 Training Course: Nice free set of training courses from Microsoft that can help bring you up to speed on all of the new Silverlight 4 features and how to build applications with them.  Updated and current with the recently released Silverlight 4 RC build and tools. Getting Started with Silverlight and Windows Phone 7 Development: Nice blog post by Tim Heuer that summarizes how to get started building Windows Phone 7 applications using Silverlight.  Also check out my blog post from last week on how to build a Windows Phone 7 Twitter application using Silverlight. A Guide to What Has Changed with the Silverlight 4 RC: Nice summary post by Tim Heuer that describes all of the things that have changed between the Silverlight 4 Beta and the Silverlight 4 RC. Path Based Layout - Part 1 and Part 2: Christian Schormann has a nice blog post about a really cool new feature in Expression Blend 4 and Silverlight 4 called Path Layout. Also check out Andy Beaulieu’s blog post on this. Hope this helps, Scott

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• spring security : Failed to load ApplicationContext with pre-post-annotations="enabled"

  - by thogau

  I am using spring 3.0.1 + spring-security 3.0.2 and I am trying to use features like @PreAuthorize and @PostFilter annotations. When running in units tests using @RunWith(SpringJUnit4ClassRunner.class) or in a main(String[] args) method my application context fails to start if enable pre-post-annotations and use org.springframework.security.acls.AclPermissionEvaluator : <!-- Enable method level security--> <security:global-method-security pre-post-annotations="enabled"> <security:expression-handler ref="expressionHandler"/> </security:global-method-security> <bean id="expressionHandler" class="org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler"> <property name="permissionEvaluator" ref="aclPermissionEvaluator"/> </bean> <bean id="aclPermissionEvaluator" class="org.springframework.security.acls.AclPermissionEvaluator"> <constructor-arg ref="aclService"/> </bean> <!-- Enable stereotype support --> <context:annotation-config /> <context:component-scan base-package="com.rreps.core" /> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:applicationContext.properties</value> </list> </property> </bean> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driver}" /> <property name="jdbcUrl" value="${jdbc.url}" /> <property name="user" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <property name="initialPoolSize" value="10" /> <property name="minPoolSize" value="5" /> <property name="maxPoolSize" value="25" /> <property name="acquireRetryAttempts" value="10" /> <property name="acquireIncrement" value="5" /> <property name="idleConnectionTestPeriod" value="3600" /> <property name="maxIdleTime" value="10800" /> <property name="maxConnectionAge" value="14400" /> <property name="preferredTestQuery" value="SELECT 1;" /> <property name="testConnectionOnCheckin" value="false" /> </bean> <bean id="auditedSessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:hibernate.cfg.xml" /> <property name="hibernateProperties"> <value> hibernate.dialect=${hibernate.dialect} hibernate.query.substitutions=true 'Y', false 'N' hibernate.cache.use_second_level_cache=true hibernate.cache.provider_class=net.sf.ehcache.hibernate.SingletonEhCacheProvider hibernate.hbm2ddl.auto=update hibernate.c3p0.acquire_increment=5 hibernate.c3p0.idle_test_period=3600 hibernate.c3p0.timeout=10800 hibernate.c3p0.max_size=25 hibernate.c3p0.min_size=1 hibernate.show_sql=false hibernate.validator.autoregister_listeners=false </value> </property> <!-- validation is performed by "hand" (see http://opensource.atlassian.com/projects/hibernate/browse/HV-281) <property name="eventListeners"> <map> <entry key="pre-insert" value-ref="beanValidationEventListener" /> <entry key="pre-update" value-ref="beanValidationEventListener" /> </map> </property> --> <property name="entityInterceptor"> <bean class="com.rreps.core.dao.hibernate.interceptor.TrackingInterceptor" /> </property> </bean> <bean id="simpleSessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:hibernate.cfg.xml" /> <property name="hibernateProperties"> <value> hibernate.dialect=${hibernate.dialect} hibernate.query.substitutions=true 'Y', false 'N' hibernate.cache.use_second_level_cache=true hibernate.cache.provider_class=net.sf.ehcache.hibernate.SingletonEhCacheProvider hibernate.hbm2ddl.auto=update hibernate.c3p0.acquire_increment=5 hibernate.c3p0.idle_test_period=3600 hibernate.c3p0.timeout=10800 hibernate.c3p0.max_size=25 hibernate.c3p0.min_size=1 hibernate.show_sql=false hibernate.validator.autoregister_listeners=false </value> </property> <!-- property name="eventListeners"> <map> <entry key="pre-insert" value-ref="beanValidationEventListener" /> <entry key="pre-update" value-ref="beanValidationEventListener" /> </map> </property--> </bean> <bean id="sequenceSessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:hibernate.cfg.xml" /> <property name="hibernateProperties"> <value> hibernate.dialect=${hibernate.dialect} hibernate.query.substitutions=true 'Y', false 'N' hibernate.cache.use_second_level_cache=true hibernate.cache.provider_class=net.sf.ehcache.hibernate.SingletonEhCacheProvider hibernate.hbm2ddl.auto=update hibernate.c3p0.acquire_increment=5 hibernate.c3p0.idle_test_period=3600 hibernate.c3p0.timeout=10800 hibernate.c3p0.max_size=25 hibernate.c3p0.min_size=1 hibernate.show_sql=false hibernate.validator.autoregister_listeners=false </value> </property> </bean> <bean id="validationFactory" class="javax.validation.Validation" factory-method="buildDefaultValidatorFactory" /> <!-- bean id="beanValidationEventListener" class="org.hibernate.cfg.beanvalidation.BeanValidationEventListener"> <constructor-arg index="0" ref="validationFactory" /> <constructor-arg index="1"> <props/> </constructor-arg> </bean--> <!-- Enable @Transactional support --> <tx:annotation-driven transaction-manager="transactionManager"/> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="auditedSessionFactory" /> </bean> <security:authentication-manager alias="authenticationManager"> <security:authentication-provider user-service-ref="userDetailsService" /> </security:authentication-manager> <bean id="userDetailsService" class="com.rreps.core.service.impl.UserDetailsServiceImpl" /> <!-- ACL stuff --> <bean id="aclCache" class="org.springframework.security.acls.domain.EhCacheBasedAclCache"> <constructor-arg> <bean class="org.springframework.cache.ehcache.EhCacheFactoryBean"> <property name="cacheManager"> <bean class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"/> </property> <property name="cacheName" value="aclCache"/> </bean> </constructor-arg> </bean> <bean id="lookupStrategy" class="org.springframework.security.acls.jdbc.BasicLookupStrategy"> <constructor-arg ref="dataSource"/> <constructor-arg ref="aclCache"/> <constructor-arg> <bean class="org.springframework.security.acls.domain.AclAuthorizationStrategyImpl"> <constructor-arg> <list> <bean class="org.springframework.security.core.authority.GrantedAuthorityImpl"> <constructor-arg value="ROLE_ADMINISTRATEUR"/> </bean> <bean class="org.springframework.security.core.authority.GrantedAuthorityImpl"> <constructor-arg value="ROLE_ADMINISTRATEUR"/> </bean> <bean class="org.springframework.security.core.authority.GrantedAuthorityImpl"> <constructor-arg value="ROLE_ADMINISTRATEUR"/> </bean> </list> </constructor-arg> </bean> </constructor-arg> <constructor-arg> <bean class="org.springframework.security.acls.domain.ConsoleAuditLogger"/> </constructor-arg> </bean> <bean id="aclService" class="com.rreps.core.service.impl.MysqlJdbcMutableAclService"> <constructor-arg ref="dataSource"/> <constructor-arg ref="lookupStrategy"/> <constructor-arg ref="aclCache"/> </bean> The strange thing is that the context starts normally when deployed in a webapp and @PreAuthorize and @PostFilter annotations are working fine as well... Any idea what is wrong? Here is the end of the stacktrace : ... 55 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [applicationContext-core.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.config.internalTransactionAdvisor': Cannot resolve reference to bean 'org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0' while setting bean property 'transactionAttributeSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0': Initialization of bean failed; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) ... 67 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.config.internalTransactionAdvisor': Cannot resolve reference to bean 'org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0' while setting bean property 'transactionAttributeSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0': Initialization of bean failed; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1308) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1067) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:511) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:86) at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:100) at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:86) at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:68) at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:359) at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:322) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:404) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1409) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ... 73 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0': Initialization of bean failed; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) ... 91 more Caused by: java.lang.NullPointerException at org.springframework.security.access.method.DelegatingMethodSecurityMetadataSource.getAttributes(DelegatingMethodSecurityMetadataSource.java:52) at org.springframework.security.access.intercept.aopalliance.MethodSecurityMetadataSourceAdvisor$MethodSecurityMetadataSourcePointcut.matches(MethodSecurityMetadataSourceAdvisor.java:129) at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:215) at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:252) at org.springframework.aop.support.AopUtils.findAdvisorsThatCanApply(AopUtils.java:284) at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findAdvisorsThatCanApply(AbstractAdvisorAutoProxyCreator.java:117) at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:87) at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:68) at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:359) at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:322) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:404) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1409) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ... 97 more

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• Java Generics, JPA 2, J2EE, JSF 2, GWT, Ajax, Oracle's Java Strategies, Flex, iPhone, Agile ALM, Gra

  - by Kim Won

  Great Indian Developer Summit 2010 – India's Biggest Polyglot Conference and Workshops for IT Software Professionals Bangalore, April 9, 2010: The GIDS.Java Conference and Workshops has announced the complete program of over 50 sessions on the present and future of the Java language and VM, how they are evolving to meet the community's ever-changing needs, and some of the cutting-edge tools, technologies & techniques used for building robust enterprise Java applications today. The GIDs.Java track at Great Indian Developer Summit takes place 22 and 23 April 2010, at the Indian Institute of Science in Bangalore. As one of the longest running independent developer conferences in India, GIDS.Java at the Great Indian Developer Summit 2010 is uniquely positioned to provide a blend of practical, pragmatic and immediately applicable knowledge and a glimpse of the future of technology. During 22 and 23 April 2010, GIDS.Java offers a multi-track conference, workshops, expo show floor, and networking opportunities. The first keynote at GIDS.Java "Pointy Haired Bosses and Pragmatic Programmers" is led by Dr. Venkat Subramaniam. He speaks about how each of us has a professional responsibility to be objective and make decisions that will help us and our teams be productive and deliver results. Venkat will pick on some fallacies, lay down facts, and discuss how to stay professional and objective in our daily efforts. The second keynote of the day explains the practical features that make the Cloud so interesting, and why everyone should start using it in their everyday life. Simone Brunozzi, Amazon Web Services Technology Evangelist, will detail technical examples, business details all mixed with a lot of Italian humor to ensure audience enjoy this talk without a single line of code. The third keynote of the day gives an exciting overview of directions in the Java space for Oracle, featuring concrete signs of Oracles heavy investment, a clear concise strategy overview, and deep dives into some of the most interesting pieces of technology being developed in the Java Platform Group today; such as JavaEE, JDK7, JavaFX, and our exciting new visual tools. Featuring demos by a Java evangelism team star, Simon Ritter, this talk takes you top to bottom in Java Technology. Featured talks at GID.Web include: Good, Bad, and Ugly of Java Generics, Venkat Subramaniam Pure Java Ajax: An Overview of GWT 2.0, Marty Hall How JPA 2.0 Makes a Good Thing Even Better, Mike Keith Building Enterprise RIAs with Adobe Flex and Java, Sujit Reddy G Integrated Ajax Support in JSF 2.0, Marty Hall Design Patterns in Java and Groovy, Venkat Subramaniam A Gentle Introduction to iPhone and Obj-C for Java Developers, Matthew McCullough Cloud Computing: Azure for Java Developers, Janakiram MSV Ajax Support in the Prototype JavaScript Library, Marty Hall First steps to IT Heaven Through the Cloud. Part III: .Java, Simone Brunozi Building Web 2.0 User Interfaces for Web Service Models using JSF, Frank Nimphius and Jobinesh P Acceptance Test Driven Development, John Tobin and Mohammed Mohsinali Architecting Your Java Applications for the Cloud, Praveen Srivatsa Effective Java, Venkat Subramaniam The Amazing Groovy Weight-loss Plan, Scott Davis Enterprise Modeling - from Conceptual Planning to Technical Blueprints, J Sripad Java Collections Renaissance, Donald Raab and Vlad Zakharov Power 7 and IBM J9VM, Himanshu Goyal A Whistle-stop Tour of Maven 3.0, Matthew McCullough Mass Volume Opportunities for Java Developers, Jouko Nuottila Emerging Technology Complex Event Processing, Duvvuri Srinivas Agile ALM for Distributed Development, Karthi Swaminathan Dim Sum Grails - A Sampler of Practical Non Database-Driven Grails Applications, Scott Davis Diagnosing Performance Bottlenecks in J2EE, Deepak Kaul Business Driven Identity Management, Suneet Agera Combining Java EE with OSGi using Eclipse Gemini, Mike Keith Workshop: Essence of Functional Programming, Venkat Subramaniam Workshop: Agile Development, Tools, and Teams and Scrum Certification, Stephen Forte Workshop: Cloud Computing Boot Camp on the Google App Engine, Matthew McCullough Workshop: Building Your First Amazon App, Simone Brunozzi Workshop: The 180-min AJAX and JSON Spike Class, Scott Davis Workshop: PHP + Adobe Flex = Killer RIA, Shyamprasad P Workshop: User Expereince Evaluation Model Walkthrough, Sanna Häiväläinen Workshop: Building Data Centric Applications using Adobe Flex and Java, Prashant Singh Workshop: Monetizing your Apps with PayPal X Payments Platform, Khurram Khan, Praveen Alavilli Sponsors of Great Indian Developer Summit 2010 include: Platinum sponsors Microsoft, Oracle Forum Nokia and Adobe; Gold sponsors Intel and SAP; Silver sponsors Quest Software, PayPal, Telerik and AMT. About Great Indian Developer Summit Great Indian Developer Summit is the gold standard for India's software developer ecosystem for gaining exposure to and evaluating new projects, tools, services, platforms, languages, software and standards. Packed with premium knowledge, action plans and advise from been-there-done-it veterans, creators, and visionaries, the 2010 edition of Great Indian Developer Summit features focused sessions, case studies, workshops and power panels that will transform you into a force to reckon with. Featuring 3 co-located conferences: GIDS.NET, GIDS.Web, GIDS.Java and an exclusive day of in-depth tutorials - GIDS.Workshops, from 20 April to 24 April at the IISc campus in Bangalore. At GIDS you'll participate in hundreds of sessions encompassing the full range of Microsoft computing, Java, Agile, RIA, Rich Web, open source/standards, languages, frameworks and platforms, practical tutorials that deep dive into technical skill and best practices, inspirational keynote presentations, an Expo Hall featuring dozens of the latest projects and products activities, engaging networking events, and the interact with the best and brightest of speakers from around the world. For further information on GIDS 2010, please visit the summit on the web http://www.developersummit.com/ A Saltmarch Media Press Release E: [email protected] Ph: +91 80 4005 1000

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• Ajax, Lizard Brain Web Design, JSF, Struts, JavaScript, Mobile Web, Flash, jQuery, GWT, Harmony at I

  - by Kim Won

  Great Indian Developer Summit 2010 – India's Biggest Polyglot Conference and Workshops for IT Software Professionals Bangalore, April 9, 2010: The GIDS.Web Conference and Workshops has announced the complete program of over 30 sessions on how browser and rich web technologies such as AJAX, DHTML, Mashups, Web 2.0, Enterprise 2.0 technologies, and Rich UI technologies are making money and gaining market-share for some of the leading businesses in the world. The GIDS.Web track at Great Indian Developer Summit takes place 21 and 23 April 2010, at the Indian Institute of Science in Bangalore. As one of the longest running independent developer conferences in India, GIDS.Web at the Great Indian Developer Summit 2010 is uniquely positioned to provide a blend of practical, pragmatic and immediately applicable knowledge and a glimpse of the future of technology. During 21 and 23 April 2010, GIDS.Web offers a multi-track conference, workshops, expo show floor, and networking opportunities. The first keynote at GIDS.Web is led by the leading Java EE and Ajax developer, speaker, and author Marty Hall. The best of India's Java and RIA programmers have learnt the subject from Marty's seminal books Core Servlets and JavaServer Pages (first and second editions), More Servlets and JavaServer Pages, and Core Web Programming (first and second editions) from Prentice Hall and Sun Microsystems Press. Marty's keynote address is a comparison of approaches to building rich Internet applications with Ajax. Marty says Ajax development is difficult, and there are several fundamentally different strategies to building Ajaxified Web applications. The keynote address will survey the three most important of these approaches: using an Ajax-enabled JavaScript library such as jQuery, Prototype, Scriptaculous, Dojo, or Ext/JS; using a Web framework such as JSF 2.0 or Struts 2 that has integrated Ajax support; using the Google Web Toolkit (GWT) to build "pure Java" Ajax applications. The talk will compare and contrast these three approaches, discussing the types of applications that fit best for each option. Over the course of the summit Marty will conduct several more sessions on "Choosing an Ajax/JavaScript Toolkit: A Comparison of the Most Popular JavaScript Libraries", "Pure Java Ajax: An Overview of GWT 2.0", "Integrated Ajax Support in JSF 2.0" and "Ajax Support in the Prototype JavaScript Library". The second keynote by the head of Adobe's Flash initiative in India, Ramesh Srinivasaraghavan, explores the state of art in web application development and identify trends that could transform the way we create and use web applications. The talk explains how the Adobe Flash Platform has fuelled this revolution with an integrated set of technologies for delivering the most compelling applications, content and video to the widest possible audience. The Director of Forum Nokia will explain how cloud computing coupled with mobile applications enable consumers to have access to powerful services and improved user experiences never before thought possible. IEEE's 2010 President-Elect Sorel Reisman's afternoon address steps to improve the IT profession in India. Featured talks at GID.Web also include: Web 2.0 Checklist - Deconstructing Modern Websites, Scott Davis Choosing an Ajax/JavaScript Toolkit: Comparison of Popular JavaScript Libraries, Marty Hall Lizard Brain Web Design, Scott Davis Effective Design Processes and Resources for Mobile Web Development, Arabella David NoSQL: The Shift to a Non-relational World, Nosh Petigara Open Source Web Debugging Tools, Matthew McCullough Building Line of Business Applications with Silverlight 4.0, Stephen Forte Hadoop - Divide and Conquer, Matthew McCullough Adobe Flash Catalyst for Agile Interaction Design, Harish Sivaramakrishnan Using jQuery and AJAX to Build Front-ends for ASP.NET and ASP.NET MVC, Pandurang Nayak First Steps to IT Heaven Through the Cloud. Part II: .WEB, Simone Brunozzi Building Rich Internet Applications with SL RIA Web Services, Pandurang Nayak Enriching Cloud Applications with Adobe Flash Platform, Ramesh Srinivasaraghavan Payments for the Web.future, Khurram Khan and Praveen Alavilli Longevity of Scalable Systems, Nishad Kamat Transform yourself into a Mobile App Developer Using Web Run Time, Balagopal K S Developing Multi Screen Applications on Adobe Flash Platform, Hemanth Sharma Why Harmony and For Whom?, Himanshu Goyal IIS Hosting Solution for ASP.net and PHP Web Sites, Nahas Mohammed Building Pluggable Web applications using Django, Lakshman Prasad Workshop: The 180-min AJAX and JSON Spike Class, Scott Davis Workshop: Essence of Functional Programming, Venkat Subramaniam Workshop: Agile Development, Tools, and Teams and Scrum Certification, Stephen Forte Workshop: PHP + Adobe Flex = Killer RIA, Shyamprasad P Workshop: Cloud Computing Boot Camp on the Google App Engine, Matthew McCullough Workshop: Building Data Centric Applications using Adobe Flex and Java, Prashant Singh Workshop: Building Your First Amazon App, Simone Brunozzi Workshop: Windows Azure Deep Dive, Ramaprasanna Chellamuthu Workshop: Monetizing your Apps with PayPal X Payments Platform, Khurram Khan, Praveen Alavilli Workshop: User Expereince Evaluation Model Walkthrough, Sanna Häiväläinen Sponsors of Great Indian Developer Summit 2010 include: Platinum sponsors Microsoft, Oracle Forum Nokia and Adobe; Gold sponsors Intel and SAP; Silver sponsors Quest Software, PayPal, Telerik and AMT. About Great Indian Developer Summit Great Indian Developer Summit is the gold standard for India's software developer ecosystem for gaining exposure to and evaluating new projects, tools, services, platforms, languages, software and standards. Packed with premium knowledge, action plans and advise from been-there-done-it veterans, creators, and visionaries, the 2010 edition of Great Indian Developer Summit features focused sessions, case studies, workshops and power panels that will transform you into a force to reckon with. Featuring 3 co-located conferences: GIDS.NET, GIDS.Web, GIDS.Java and an exclusive day of in-depth tutorials - GIDS.Workshops, from 20 April to 24 April at the IISc campus in Bangalore. At GIDS you'll participate in hundreds of sessions encompassing the full range of Microsoft computing, Java, Agile, RIA, Rich Web, open source/standards, languages, frameworks and platforms, practical tutorials that deep dive into technical skill and best practices, inspirational keynote presentations, an Expo Hall featuring dozens of the latest projects and products activities, engaging networking events, and the interact with the best and brightest of speakers from around the world. For further information on GIDS 2010, please visit the summit on the web http://www.developersummit.com/ A Saltmarch Media Press Release E: [email protected] Ph: +91 80 4005 1000

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• Searching for tasks with code – Executables and Event Handlers

  Searching packages or just enumerating through all tasks is not quite as straightforward as it may first appear, mainly because of the way you can nest tasks within other containers. You can see this illustrated in the sample package below where I have used several sequence containers and loops. To complicate this further all containers types, including packages and tasks, can have event handlers which can then support the full range of nested containers again. Towards the lower right, the task called SQL In FEL also has an event handler not shown, within which is another Execute SQL Task, so that makes a total of 6 Execute SQL Tasks 6 tasks spread across the package. In my previous post about such as adding a property expressionI kept it simple and just looked at tasks at the package level, but what if you wanted to find any or all tasks in a package? For this post I've written a console program that will search a package looking at all tasks no matter how deeply nested, and check to see if the name starts with "SQL". When it finds a matching task it writes out the hierarchy by name for that task, starting with the package and working down to the task itself. The output for our sample package is shown below, note it has found all 6 tasks, including the one on the OnPreExecute event of the SQL In FEL task TaskSearch v1.0.0.0 (1.0.0.0) Copyright (C) 2009 Konesans Ltd Processing File - C:\Projects\Alpha\Packages\MyPackage.dtsx MyPackage\FOR Counter Loop\SQL In Counter Loop MyPackage\SEQ For Each Loop Wrapper\FEL Simple Loop\SQL In FEL MyPackage\SEQ For Each Loop Wrapper\FEL Simple Loop\SQL In FEL\OnPreExecute\SQL On Pre Execute for FEL SQL Task MyPackage\SEQ Top Level\SEQ Nested Lvl 1\SEQ Nested Lvl 2\SQL In Nested Lvl 2 MyPackage\SEQ Top Level\SEQ Nested Lvl 1\SQL In Nested Lvl 1 #1 MyPackage\SEQ Top Level\SEQ Nested Lvl 1\SQL In Nested Lvl 1 #2 6 matching tasks found in package. The full project and code is available for download below, but first we can walk through the project to highlight the most important sections of code. This code has been abbreviated for this description, but is complete in the download. First of all we load the package, and then start by looking at the Executables for the package. // Load the package file Application application = new Application(); using (Package package = application.LoadPackage(filename, null)) { int matchCount = 0; // Look in the package's executables ProcessExecutables(package.Executables, ref matchCount); ... // // ... // Write out final count Console.WriteLine("{0} matching tasks found in package.", matchCount); } The ProcessExecutables method is a key method, as an executable could be described as the the highest level of a working functionality or container. There are several of types of executables, such as tasks, or sequence containers and loops. To know what to do next we need to work out what type of executable we are dealing with as the abbreviated version of method shows below. private static void ProcessExecutables(Executables executables, ref int matchCount) { foreach (Executable executable in executables) { TaskHost taskHost = executable as TaskHost; if (taskHost != null) { ProcessTaskHost(taskHost, ref matchCount); ProcessEventHandlers(taskHost.EventHandlers, ref matchCount); continue; } ... // // ... ForEachLoop forEachLoop = executable as ForEachLoop; if (forEachLoop != null) { ProcessExecutables(forEachLoop.Executables, ref matchCount); ProcessEventHandlers(forEachLoop.EventHandlers, ref matchCount); continue; } } } As you can see if the executable we find is a task we then call out to our ProcessTaskHost method. As with all of our executables a task can have event handlers which themselves contain more executables such as task and loops, so we also make a call out our ProcessEventHandlers method. The other types of executables such as loops can also have event handlers as well as executables. As shown with the example for the ForEachLoop we call the same ProcessExecutables and ProcessEventHandlers methods again to drill down into the hierarchy of objects that the package may contain. This code needs to explicitly check for each type of executable (TaskHost, Sequence, ForLoop and ForEachLoop) because whilst they all have an Executables property this is not from a common base class or interface. This example was just a simple find a task by its name, so ProcessTaskHost really just does that. We also get the hierarchy of objects so we can write out for information, obviously you can adapt this method to do something more interesting such as adding a property expression. private static void ProcessTaskHost(TaskHost taskHost, ref int matchCount) { if (taskHost == null) { return; } // Check if the task matches our match name if (taskHost.Name.StartsWith(TaskNameFilter, StringComparison.OrdinalIgnoreCase)) { // Build up the full object hierarchy of the task // so we can write it out for information StringBuilder path = new StringBuilder(); DtsContainer container = taskHost; while (container != null) { path.Insert(0, container.Name); container = container.Parent; if (container != null) { path.Insert(0, "\\"); } } // Write the task path // e.g. Package\Container\Event\Task Console.WriteLine(path); Console.WriteLine(); // Increment match counter for info matchCount++; } } Just for completeness, the other processing method we covered above is for event handlers, but really that just calls back to the executables. This same method is called in our main package method, but it was omitted for brevity here. private static void ProcessEventHandlers(DtsEventHandlers eventHandlers, ref int matchCount) { foreach (DtsEventHandler eventHandler in eventHandlers) { ProcessExecutables(eventHandler.Executables, ref matchCount); } } As hopefully the code demonstrates, executables (Microsoft.SqlServer.Dts.Runtime.Executable) are the workers, but within them you can nest more executables (except for task tasks).Executables themselves can have event handlers which can in turn hold more executables. I have tried to illustrate this highlight the relationships in the following diagram. Download Sample code project TaskSearch.zip (11KB)

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• Customizing the processing of ListItems for asp:RadioButtonList with "Flow" layout and "Horizontal"

  - by evovision

  Hi, recently I was asked to add an ability to pad specific elements from each other to a certain distance in RadioButtonList control. Not quite common everyday task I would say :)   Ok, let's get started!   Prerequisites: ASP.NET Page having RadioButtonList control with RepeatLayout="Flow" RepeatDirection="Horizontal" properties set.   Implementation:  The underlying data was coming from another source, so the only fast way to add meta information about padding was the text value itself (yes, not very optimal solution): Id = 1, Name = "This is first element" and for padding we agreed to use <space/> meta tag: Id = 2, Name = "<space padcount="30px"/>This is second padded element"   To handle items rendering in RadioButtonList control I've created custom class and subclassed from it:    public class CustomRadioButtonList : RadioButtonList    {        private Action<ListItem, HtmlTextWriter> _preProcess;         protected override void RenderItem(ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer)        {            if (_preProcess != null)            {                _preProcess(this.Items[repeatIndex], writer);            }             base.RenderItem(itemType, repeatIndex, repeatInfo, writer);        }         public void SetPrePrenderItemFunction(Action<ListItem, HtmlTextWriter> func)        {            _preProcess = func;        }    }   It is pretty straightforward approach, the key is to override RenderItem method. Class has SetPrePrenderItemFunction method which is used to pass custom processing function that takes 2 parameters: ListItem and HtmlTextWriter objects.   Now update existing RadioButtonList control in Default.aspx: add this to beginning of the page:   <%@ Register Namespace="Sample.Controls" TagPrefix="uc1" %>   and update the control to:   <uc1:CustomRadioButtonList ID="customRbl" runat="server" DataValueField="Id" DataTextField="Name"            RepeatLayout="Flow" RepeatDirection="Horizontal"></uc1:CustomRadioButtonList>   Now, from codebehind of the page:   Add regular expression that will be used for parsing:   private Regex _regex = new Regex(@"(?:[<]space padcount\s*?=\s*?(?:'|"")(?<padcount>\d+)(?:(?:\s+)?px)?(?:'|"")\s*?/>)(?<content>.*)?", RegexOptions.IgnoreCase | RegexOptions.Compiled);   and finally setup the processing function in Page_Load:   protected void Page_Load(object sender, EventArgs e)    {        customRbl.DataSource = DataObjects;         customRbl.SetPrePrenderItemFunction((listItem, writer) =>        {            Match match = _regex.Match(listItem.Text);            if (match.Success)            {                writer.Write(string.Format(@"<span style=""padding-left:{0}"">Extreme values: </span>", match.Groups["padcount"].Value + "px"));                 // if you need to pad listitem use code below                //x.Attributes.CssStyle.Add("padding-left", match.Groups["padcount"].Value + "px");                 // remove meta tag from text                listItem.Text = match.Groups["content"].Value;            }        });         customRbl.DataBind();    }   That's it! :)   Run the attached sample application:     P.S.: of course several other approaches could have been used for that purpose including events and the functionality for processing could also be embedded inside control itself. Current solution suits slightly better due some other reasons for situation where it was used, in your case consider this as a kick start for your own implementation :)   Source application: CustomRadioButtonList.zip

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• Building the Elusive Windows Phone Panorama Control

  When the Windows Phone 7 Developer SDK was released a couple of weeks ago at MIX10 many people noticed the SDK doesnt include a template for a Panorama control.   Here at Clarity we decided to build our own Panorama control for use in some of our prototypes and I figured I would share what we came up with. There have been a couple of implementations of the Panorama control making their way through the interwebs, but I didnt think any of them really nailed the experience that is shown in the simulation videos.   One of the key design principals in the UX Guide for Windows Phone 7 is the use of motion.  The WP7 OS is fairly stripped of extraneous design elements and makes heavy use of typography and motion to give users the necessary visual cues.  Subtle animations and wide layouts help give the user a sense of fluidity and consistency across the phone experience.  When building the panorama control I was fairly meticulous in recreating the motion as shown in the videos.  The effect that is shown in the application hubs of the phone is known as a Parallax Scrolling effect.  This this pseudo-3D technique has been around in the computer graphics world for quite some time. In essence, the background images move slower than foreground images, creating an illusion of depth in 2D.  Here is an example of the traditional use: http://www.mauriciostudio.com/.  One of the animation gems I've learned while building interactive software is the follow animation.  The premise is straightforward: instead of translating content 1:1 with the interaction point, let the content catch up to the mouse or finger.  The difference is subtle, but the impact on the smoothness of the interaction is huge.  That said, it became the foundation of how I achieved the effect shown below.   Source Code Available HERE Before I briefly describe the approach I took in creating this control..and Ill add some **asterisks ** to the code below as my coding skills arent up to snuff with the rest of my colleagues.  This code is meant to be an interpretation of the WP7 panorama control and is not intended to be used in a production application.  1.  Layout the XAML The UI consists of three main components :  The background image, the Title, and the Content.  You can imagine each  these UI Elements existing on their own plane with a corresponding Translate Transform to create the Parallax effect.  2.  Storyboards + Procedural Animations = Sexy As I mentioned above, creating a fluid experience was at the top of my priorities while building this control.  To recreate the smooth scroll effect shown in the video we need to add some place holder storyboards that we can manipulate in code to simulate the inertia and snapping.  Using the easing functions built into Silverlight helps create a very pleasant interaction.    3.  Handle the Manipulation Events With Silverlight 3 we have some new touch event handlers.  The new Manipulation events makes handling the interactivity pretty straight forward.  There are two event handlers that need to be hooked up to enable the dragging and motion effects: the ManipulationDelta event :  (the most relevant code is highlighted in pink) Here we are doing some simple math with the Manipulation Deltas and setting the TO values of the animations appropriately. Modifying the storyboards dynamically in code helps to create a natural feel.something that cant easily be done with storyboards alone.   And secondly, the ManipulationCompleted event:  Here we take the Final Velocities from the Manipulation Completed Event and apply them to the Storyboards to create the snapping and scrolling effects.  Most of this code is determining what the next position of the viewport will be.  The interesting part (shown in pink) is determining the duration of the animation based on the calculated velocity of the flick gesture.  By using velocity as a variable in determining the duration of the animation we can produce a slow animation for a soft flick and a fast animation for a strong flick. Challenges to the Reader There are a couple of things I didnt have time to implement into this control.  And I would love to see other WPF/Silverlight approaches.  1.  A good mechanism for deciphering when the user is manipulating the content within the panorama control and the panorama itself.   In other words, being able to accurately determine what is a flick and what is click. 2.  Dynamically Sizing the panorama control based on the width of its content.  Right now each control panel is 400px, ideally the Panel items would be measured and then panorama control would update its size accordingly.  3.  Background and content wrapping.  The WP7 UX guidelines specify that the content and background should wrap at the end of the list.  In my code I restrict the drag at the ends of the list (like the iPhone).  It would be interesting to see how this would effect the scroll experience.     Well, Its been fun building this control and if you use it Id love to know what you think.  You can download the Source HERE or from the Expression Gallery  Erik Klimczak  | [email protected] | twitter.com/eklimczDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• A classic StackOverflow : Java Swing

  - by ModernTalking

  Greetings everyone! I programmed GUI Application using Java Swing under Windows. Under windows everything works well. Now I am trying it under Linux (using distribution Linux Mint 7). I am getting and nasty StackOverflowException, when I call frame's dispose method! The problematic frame is JDialog component. Here is some output : edited, full output run: Exception in thread "AWT-EventQueue-0" java.lang.StackOverflowError at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:261) at java.beans.Statement.invoke(Statement.java:231) at java.beans.Expression.getValue(Expression.java:115) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:227) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:116) at java.beans.Encoder.writeObject(Encoder.java:74) at java.beans.XMLEncoder.writeObject(XMLEncoder.java:274) at java.beans.Encoder.writeExpression(Encoder.java:304) at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:389) at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:229) at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:264) at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:408) at java.beans.Persistenc

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• 2010 Collaboration Summit Impressions

  - by Elena Zannoni

  It's a bit late, but there you have it anyway. April 14 to 16 I attended the Linux Foundation Collaboration Summit in SFO. I was running two tracks, one on tracing and one on tools. You can see the tracks and the slides here: http://events.linuxfoundation.org/events/collaboration-summit/slides I was pretty busy both days, Thursday with a whole day tracing track, Friday with a half day toolchain track. The sessions were well attended, the rooms were full, with people spilling in the hallways. Some new things were presented, like Kernelshark, by Steve Rostedt, a GUI (yes, believe it or not, a GUI) written in GTK. It is very nice, showing a timeline for traced kernel events, and you can zoom in and filter at will. It works on the latest kernels, and it requires some new things/fixes in GTK. I don't recall exactly what version of GTK though. Dominique Toupin from Ericsson presented something about user requirements for tracing. Mostly though about who's who in the embedded world, and eclipse. Masami and Mathieu presented an update on their work. See their slides. The interesting thing to me was of course the new version of uprobes w/o underlying utrace presented by Jim Keniston. At the end of the session we had a discussion about the future of utrace. Roland wasn't there, butTom Tromey (also from RedHat) collected the feedback. Basically we are at a standstill now that utrace has been rejected yet again. There wasn't much advise that anybody could give, except jokingly, we decided that the only way in is to make it a part of perf events. There needs to be another refactoring, but most of all, this "killer app" that would be enabled because of utrace hasn't materialized yet. We think that having a good debugging story on Linux is enough of a killer app, for instance allowing multiple tracers, and not relying on SIGCHLD etc. I think this wasn't completely clear to the kernel community. Trying to achieve debugging via a gdb stub inside the kernel interfacing to utrace and that is controlled via the gdb remote protocol also lost its appeal (thankfully, since the gdb remote protocol is archaic). Somebody would have to be creative in how to submit utrace. It doesn't have to be called utrace (it was really a random choice, for lack of a letter that was not already used in front of the word "trace"). So basically, I think the ideas behind utrace are sound, and the necessity of a new interface is acknowledged. But I believe the integration/submission process with the kernel folks has to restart from scratch, clean slate. We'll see. There are many conferences and meetings coming up in the near future where things can be discussed further. On the second day, Friday, we had the tools talks. It was interesting to observe the more "kernel" oriented people's behavior towards the gcc etc community. The first talk was by Mark Mitchell, about Gcc and its new plugin architecture. After that, Paolo talked about the new C++1x standard, which will be finalized in 2011. Many features are already implemented in the libstdc++ library and gcc and usable today. We had a few minutes (really, the half day track was quite short) where Bradley Kuhn from the Software Freedom Law Center explained the GPLv3 exception for gcc (due to the new gcc plugin architecture and the availability of the intermediate results from the compilation, which is a new thing). I will not try to explain, but basically you cannot take the result of the preprocessing and then use that in your own proprietary compiler. After, we had a talk by Ian Taylor about the new Gold linker. One good thing in that area is that they are trying to make gold the new default linker (for instance Fedora will use gold as the distro linker). However gold is very different from binutils' old linker. It doesn't use a linker script, for instance. The kernel has been linked with gold many times as an exercise (the ground work was done by Kris Van Hees), but this needs to be constantly tested/monitored because the kernel linker script is very complex, and uses esoteric features (Wenji is now monitoring that each kernel RC can be built with gold). It was positive that people are now aware of gold and the need for it to be ported to more architectures. It seems that the porting is very easy, with little arch dependent code. Finally Tom Tromey presented about gdb and the archer project. Archer is a development branch of gdb mostly done by RedHat, where they are focusing on better c++ printing, c++ expression parsing, and plugins. The archer work is merged regularly in the gdb mainline. In general it was a good conference. I did miss most of the first day, because that's when I flew in. But I caught a couple of talks. Nothing earth shattering, except for Google giving each person registered a free Android phone. Yey.

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• Pre-filtering and shaping OData feeds using WCF Data Services and the Entity Framework - Part 2

  - by rajbk

  In the previous post, you saw how to create an OData feed and pre-filter the data. In this post, we will see how to shape the data. A sample project is attached at the bottom of this post. Pre-filtering and shaping OData feeds using WCF Data Services and the Entity Framework - Part 1 Shaping the feed The Product feed we created earlier returns too much information about our products. Let’s change this so that only the following properties are returned – ProductID, ProductName, QuantityPerUnit, UnitPrice, UnitsInStock. We also want to return only Products that are not discontinued.  Splitting the Entity To shape our data according to the requirements above, we are going to split our Product Entity into two and expose one through the feed. The exposed entity will contain only the properties listed above. We will use the other Entity in our Query Interceptor to pre-filter the data so that discontinued products are not returned. Go to the design surface for the Entity Model and make a copy of the Product entity. A “Product1” Entity gets created.   Rename Product1 to ProductDetail. Right click on the Product entity and select “Add Association” Make a one to one association between Product and ProductDetails.   Keep only the properties we wish to expose on the Product entity and delete all other properties on it (see diagram below). You delete a property on an Entity by right clicking on the property and selecting “delete”. Keep the ProductID on the ProductDetail. Delete any other property on the ProductDetail entity that is already present in the Product entity. Your design surface should look like below:    Mapping Entity to Database Tables Right click on “ProductDetail” and go to “Table Mapping”   Add a mapping to the “Products” table in the Mapping Details.   After mapping ProductDetail, you should see the following.   Add a referential constraint. Lets add a referential constraint which is similar to a referential integrity constraint in SQL. Double click on the Association between the Entities and add the constraint with “Principal” set to “Product”. Let us review what we did so far. We made a copy of the Product entity and called it ProductDetail We created a one to one association between these entities Excluding the ProductID, we made sure properties were not duplicated between these entities  We added a ProductDetail entity to Products table mapping (Entity to Database). We added a referential constraint between the entities. Lets build our project. We get the following error: ”'NortwindODataFeed.Product' does not contain a definition for 'Discontinued' and no extension method 'Discontinued' accepting a first argument of type 'NortwindODataFeed.Product' could be found …" The reason for this error is because our Product Entity no longer has a “Discontinued” property. We “moved” it to the ProductDetail entity since we want our Product Entity to contain only properties that will be exposed by our feed. Since we have a one to one association between the entities, we can easily rewrite our Query Interceptor like so: [QueryInterceptor("Products")] public Expression<Func<Product, bool>> OnReadProducts() { return o => o.ProductDetail.Discontinued == false; } Similarly, all “hidden” properties of the Product table are available to us internally (through the ProductDetail Entity) for any additional logic we wish to implement. Compile the project and view the feed. We see that the feed returns only the properties that were part of the requirement.   To see the data in JSON format, you have to create a request with the following request header Accept: application/json, text/javascript, */* (easy to do in jQuery) The result should look like this: { "d" : { "results": [ { "__metadata": { "uri": "http://localhost.:2576/DataService.svc/Products(1)", "type": "NorthwindModel.Product" }, "ProductID": 1, "ProductName": "Chai", "QuantityPerUnit": "10 boxes x 20 bags", "UnitPrice": "18.0000", "UnitsInStock": 39 }, { "__metadata": { "uri": "http://localhost.:2576/DataService.svc/Products(2)", "type": "NorthwindModel.Product" }, "ProductID": 2, "ProductName": "Chang", "QuantityPerUnit": "24 - 12 oz bottles", "UnitPrice": "19.0000", "UnitsInStock": 17 }, { ... ... If anyone has the $format operation working, please post a comment. It was not working for me at the time of writing this.  We have successfully pre-filtered our data to expose only products that have not been discontinued and shaped our data so that only certain properties of the Entity are exposed. Note that there are several other ways you could implement this like creating a QueryView, Stored Procedure or DefiningQuery. You have seen how easy it is to create an OData feed, shape the data and pre-filter it by hardly writing any code of your own. For more details on OData, Google it with your favorite search engine :-) Also check out the one of the most passionate persons I have ever met, Pablo Castro – the Architect of Aristoria WCF Data Services. Watch his MIX 2010 presentation titled “OData: There's a Feed for That” here. Download Sample Project for VS 2010 RTM NortwindODataFeed.zip

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• Searching for tasks with code – Executables and Event Handlers

  Searching packages or just enumerating through all tasks is not quite as straightforward as it may first appear, mainly because of the way you can nest tasks within other containers. You can see this illustrated in the sample package below where I have used several sequence containers and loops. To complicate this further all containers types, including packages and tasks, can have event handlers which can then support the full range of nested containers again. Towards the lower right, the task called SQL In FEL also has an event handler not shown, within which is another Execute SQL Task, so that makes a total of 6 Execute SQL Tasks 6 tasks spread across the package. In my previous post about such as adding a property expressionI kept it simple and just looked at tasks at the package level, but what if you wanted to find any or all tasks in a package? For this post I've written a console program that will search a package looking at all tasks no matter how deeply nested, and check to see if the name starts with "SQL". When it finds a matching task it writes out the hierarchy by name for that task, starting with the package and working down to the task itself. The output for our sample package is shown below, note it has found all 6 tasks, including the one on the OnPreExecute event of the SQL In FEL task TaskSearch v1.0.0.0 (1.0.0.0) Copyright (C) 2009 Konesans Ltd Processing File - C:\Projects\Alpha\Packages\MyPackage.dtsx MyPackage\FOR Counter Loop\SQL In Counter Loop MyPackage\SEQ For Each Loop Wrapper\FEL Simple Loop\SQL In FEL MyPackage\SEQ For Each Loop Wrapper\FEL Simple Loop\SQL In FEL\OnPreExecute\SQL On Pre Execute for FEL SQL Task MyPackage\SEQ Top Level\SEQ Nested Lvl 1\SEQ Nested Lvl 2\SQL In Nested Lvl 2 MyPackage\SEQ Top Level\SEQ Nested Lvl 1\SQL In Nested Lvl 1 #1 MyPackage\SEQ Top Level\SEQ Nested Lvl 1\SQL In Nested Lvl 1 #2 6 matching tasks found in package. The full project and code is available for download below, but first we can walk through the project to highlight the most important sections of code. This code has been abbreviated for this description, but is complete in the download. First of all we load the package, and then start by looking at the Executables for the package. // Load the package file Application application = new Application(); using (Package package = application.LoadPackage(filename, null)) { int matchCount = 0; // Look in the package's executables ProcessExecutables(package.Executables, ref matchCount); ... // // ... // Write out final count Console.WriteLine("{0} matching tasks found in package.", matchCount); } The ProcessExecutables method is a key method, as an executable could be described as the the highest level of a working functionality or container. There are several of types of executables, such as tasks, or sequence containers and loops. To know what to do next we need to work out what type of executable we are dealing with as the abbreviated version of method shows below. private static void ProcessExecutables(Executables executables, ref int matchCount) { foreach (Executable executable in executables) { TaskHost taskHost = executable as TaskHost; if (taskHost != null) { ProcessTaskHost(taskHost, ref matchCount); ProcessEventHandlers(taskHost.EventHandlers, ref matchCount); continue; } ... // // ... ForEachLoop forEachLoop = executable as ForEachLoop; if (forEachLoop != null) { ProcessExecutables(forEachLoop.Executables, ref matchCount); ProcessEventHandlers(forEachLoop.EventHandlers, ref matchCount); continue; } } } As you can see if the executable we find is a task we then call out to our ProcessTaskHost method. As with all of our executables a task can have event handlers which themselves contain more executables such as task and loops, so we also make a call out our ProcessEventHandlers method. The other types of executables such as loops can also have event handlers as well as executables. As shown with the example for the ForEachLoop we call the same ProcessExecutables and ProcessEventHandlers methods again to drill down into the hierarchy of objects that the package may contain. This code needs to explicitly check for each type of executable (TaskHost, Sequence, ForLoop and ForEachLoop) because whilst they all have an Executables property this is not from a common base class or interface. This example was just a simple find a task by its name, so ProcessTaskHost really just does that. We also get the hierarchy of objects so we can write out for information, obviously you can adapt this method to do something more interesting such as adding a property expression. private static void ProcessTaskHost(TaskHost taskHost, ref int matchCount) { if (taskHost == null) { return; } // Check if the task matches our match name if (taskHost.Name.StartsWith(TaskNameFilter, StringComparison.OrdinalIgnoreCase)) { // Build up the full object hierarchy of the task // so we can write it out for information StringBuilder path = new StringBuilder(); DtsContainer container = taskHost; while (container != null) { path.Insert(0, container.Name); container = container.Parent; if (container != null) { path.Insert(0, "\\"); } } // Write the task path // e.g. Package\Container\Event\Task Console.WriteLine(path); Console.WriteLine(); // Increment match counter for info matchCount++; } } Just for completeness, the other processing method we covered above is for event handlers, but really that just calls back to the executables. This same method is called in our main package method, but it was omitted for brevity here. private static void ProcessEventHandlers(DtsEventHandlers eventHandlers, ref int matchCount) { foreach (DtsEventHandler eventHandler in eventHandlers) { ProcessExecutables(eventHandler.Executables, ref matchCount); } } As hopefully the code demonstrates, executables (Microsoft.SqlServer.Dts.Runtime.Executable) are the workers, but within them you can nest more executables (except for task tasks).Executables themselves can have event handlers which can in turn hold more executables. I have tried to illustrate this highlight the relationships in the following diagram. Download Sample code project TaskSearch.zip (11KB)

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