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• Silverlight Cream for April 20, 2010 -- #842

  - by Dave Campbell

  In this Issue: Zoltan Arvai, Svetla Stoycheva, Alexey Zakharov, Chris Rouw, David Anson(-2-), Bill Reiss, John Papa and Adam Kinney, Chris Klug, CorrinaB, and Mike Snow. Shoutouts: Pete Brown interviewed David Kelley at MIX10: Pete at MIX10: David Kelley on the Prototype WPF and Silverlight Retail Experience Pete Brown also interviewed Emil Stoychev at MIX10: Pete at MIX10: Emil Stoychev on the CompletIT Silverlight Site SilverlightShow has a MIX10 Review by SilverlightShow Live Reporter Cigdem Patlak SilverlightShow also has an Interview with SilverlightShow Article Author Andrej Tozon From SilverlightCream.com: Implementing Push Notifications in Windows Phone 7 Zoltan Arvai has a post up on SilverlightShow discussing Push Notification on WP7 ... what it is, and how to use it. Completit.com - the challenges behind building a corporate website in Silverlight Svetla Stoycheva shows off the new CompleteIT corporate website which is pretty darn cool... and disucusses some of the challenges and solutions Introducing to Halcyone - Silverlight Application Framework: Silverlight Rest Extensions Alexey Zakharov has a tutorial up on a Silverlight application framework he's working on called Halcyone which is available on CodePlex Using the Tag Property during Silverlight Binding Chris Rouw details his SL3 to SL4 conversion and some issues he had, and how he was able to resolve a binding problem using the tag property. Using ContextMenu to implement SplitButton and MenuButton for Silverlight (or WPF) David Anson has a cool discussion up of using the ContextMenu code he put up previously to build a Split button, and includes all the code as usual. Silverlight/WPF Data Visualization Development Release 4 and Windows Phone 7 Charting sample! David Anson updated his Data Visualization because of the new releases, and this time he's including WP7... charting in WP7... ! Space Rocks game step 10: More fun with rocks In episode 10, Bill Reiss shows how to deal with multiple asteroids and all the interaction. Silverlight Training Course (Silverlight 4) Get your serious Silverlight 4 Mojo on with a new SL4 Training kit on Channel 9 ... buncha folks, spearheaded (it looks like) by John Papa and Adam Kinney... Plug-ins and composite applications in Silverlight – pt 3 Chris Klug is back with part 3 of his series on extensions and plug-in loading. So far he's covered a roll-your-own concept and MEF, now he digs into Prism. Transitions, Animations, and Effects with Blend - Part One How cool to have CorrinaB speak at your User Group meeting! ... She did just that in Portland, and instead of simply dropping a deck and some code in her blog, she's giving the run-down on her presentation... always good stuff, Corrina! Tip of the Day #110 – Using Static Resources in Class Libraries Mike Snow's latest tip is about how to create and use a Resource Dictionary. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• The Manchester lad is finally on twitter

  - by Testas

  Hi you now have another channel to see any communique I have on SQL Server, rather than legnthy blogs you will see my randomn sql thought  address is  http://twitter.com/ctesta_oneill #SQLFAQ will be added to tweets so that it appears on SQLServerFAQ as well Thanks Chris   Chris

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• Introducing the Store Locator Library for Google Maps API

  Introducing the Store Locator Library for Google Maps API In this screen cast, Chris Broadfoot gives an overview of the Store Locator library, a new open-source utility library that makes it simple for developers to create useful, valuable store locators. Documentation: goo.gl Follow Chris on G+: chrisbroadfoot.id.au From: GoogleDevelopers Views: 197 0 ratings Time: 03:42 More in Science & Technology

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• C# HttpListener without using netsh to register a URI

  - by Chris T

  My application uses a small webserver to server up some files and have a web interface for administration remotely. Right now the user has to use netsh to register the URI like so netsh http add urlacl url=http://+:1233/ user=Chris-PC\Chris Which is no fun for the average user. I'd like the program to be able to listen on any port specified by the user from my program without the end-user needing to using command prompt. Is there anyway to accomplish this short of just using Process.Start and running command prompt myself?

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• how do i load a csv file in rails from a migrate usiing load data local infile ?

  - by Chris Drappier

  Hi All, I have my csv file in my public folder, and i'm trying to load it from a migration, but I get a file not found error using this script : ActiveRecord::Base.connection.execute( "load data local infile '#{RAILS_ROOT}/public/muds_variables.csv' into table muds_variables " + "fields terminated by ',' " + "lines terminated by '\n' " + "(variable_name, definition)") I've checked and re-checked the file path, and that's definitely where it lives, I've also tried it just using the file name without any of the path, and a few other combos, but I can't make it work :(. can anyone help me out with this? here's the error : Mysql::Error: File '/home/chris/rails_projects/muds/public/muds_variables.csv' not found (Errcode: 2): load data local infile '/home/chris/rails_projects/muds/public/muds_variables.csv' into table muds_variables fields terminated by ',' lines terminated by ' ' (variable_name, definition) -C

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• Regex Problem in PHP

  - by Chris

  I'm attempting to utilize the following Regex pattern: $regex = '/Name: [a-zA-Z ]*] [0-9]/'; When testing it in Rubular, it works fine, but when using PHP the expression never returns true, even when it should. Incidentally, if I remove the "[0-9]" part, it works fine. Is there some difference in PHP's regex syntax that I'm overlooking? Edit: I'm looking for the characters "Name:" then a name containing any number of letters or spaces, then a "]", then a space, then a single number. So "Name: Chris] 5" would return true and "Name: Chris] [lorem ipsum]" should return false. I also tried escaping the second bracket "\[" but this did not fix the problem.

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• How to get items that are and are not in a list

  - by Chris

  I have an IEnumerable, listOfOnes, and an IEnumerable, listOfTwos. Assuming that I can compare objects of V against objects of T, I'd like to find which items are in listOfOnes but, not in listOfTwos. And vice versa. ex: var listOfOnes = new List<One> { new One { name = "chris", type = "user" }, new One { name = "foo", type = "group" }, new One { name = "john", type = "user" }, }; var listOfTwos = new[] { new Two { name = "chris", type = "user" }, new Two { name = "john", type = "user" }, new Two { name = "the Steves", type = "group" } }; var notInTwos; //= listOfOnes.FindDifferences(listOfTwos); //find all objects not in listOfTwos. Should find 'foo'. var notInOnes; //= listOfTwos.FindDifferences(listOfOnes) //find all objects not in listOfOnes. Should find 'the Steves'.

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• "is not abstact and does not override abstract method."

  - by Chris Bolton

  So I'm pretty new to android development and have been trying to piece together some code bits. Here's what I have so far: package com.teslaprime.prirt; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.AdapterView.OnItemClickListener; import java.util.ArrayList; import java.util.List; public class TaskList extends Activity { List<Task> model = new ArrayList<Task>(); ArrayAdapter<Task> adapter = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button add = (Button) findViewById(R.id.add); add.setOnClickListener(onAdd); ListView list = (ListView) findViewById(R.id.tasks); adapter = new ArrayAdapter<Task>(this,android.R.layout.simple_list_item_1,model); list.setAdapter(adapter); list.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(View v, int position, long id) { adapter.remove(position); } });} private View.OnClickListener onAdd = new View.OnClickListener() { public void onClick(View v) { Task task = new Task(); EditText name = (EditText) findViewById(R.id.taskEntry); task.name = name.getText().toString(); adapter.add(task); } }; } and here are the errors I'm getting: compile: [javac] /opt/android-sdk/tools/ant/main_rules.xml:384: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds [javac] Compiling 2 source files to /home/chris-kun/code/priRT/bin/classes [javac] /home/chris-kun/code/priRT/src/com/teslaprime/prirt/TaskList.java:30: <anonymous com.teslaprime.prirt.TaskList$1> is not abstract and does not override abstract method onItemClick(android.widget.AdapterView<?>,android.view.View,int,long) in android.widget.AdapterView.OnItemClickListener [javac] list.setOnItemClickListener(new OnItemClickListener() { [javac] ^ [javac] /home/chris-kun/code/priRT/src/com/teslaprime/prirt/TaskList.java:32: remove(com.teslaprime.prirt.Task) in android.widget.ArrayAdapter<com.teslaprime.prirt.Task> cannot be applied to (int) [javac] adapter.remove(position); [javac] ^ [javac] 2 errors BUILD FAILED /opt/android-sdk/tools/ant/main_rules.xml:384: Compile failed; see the compiler error output for details. Total time: 2 seconds any ideas?

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• Android ImageButton from url

  - by Chris

  Can I set an ImageButton's image from an http URL? Thanks Chris

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• Factor Clojure code setting many different fields in a Java object

  - by chris

  How do I factor code setting many different fields in a Java object? I would like to factor (set! (. employee name) "Chris") (set! (. employee age) 100) (set! (. employee salary) 5000) to (doseq [field '((name "Chris") (age 100) (salary 5000))] (set! (. employee (first field)) (second field))) However this won't work because the period is a macro, and tries to evaluate (first field) literally. By the way, I understand that setting fields is not good practice. I need to inter-operate with legacy code.

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• Is there a good XP like windows explorer for windows Vista?

  - by Brett Ryan

  I'm still refusing to go to Windows Vista and now Windows 7 mainly due to the windows explorer, I find it cumbersome and hard to use exclusively with a keyboard. I use XP file explorer in the most basic view, the address bar at the top and files always in list view underneath. The reason I do this is because I'm almost blind and do everything from the keyboard and don't touch the mouse whilst navigating through files, this is because I can type "L[ENTER]D[Enter]B[Enter]" and know that I'm in "c:\documents and settings\Brett Ryan", and I can hit [Tab] once to go to the address bar to type in a folder. Can anyone suggest a replacement for windows explorer that brings back this basic navigational behavior?

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• User Profile cannot be loaded - Windows 7

  - by Ryan

  After uninstalling an HP Vector Mouse driver, then rebooting, when Windows tries to auto log me in, i get an error message saying tyhe following: The User Profile Service failed the Login. User Profile cannot be loaded. Due to the fact that it is the only account on this PC, I cannot even go into another account. I rebooted the machine several times, before going into Safe Mode with Networking. For some reason, I cannot create a new account whilst in safe mode (I think it is to do with UAC, nothing with UAC is clickable). Thus, I am stuck. I cannot get into my account, nor can I create a new one to copy files over to. Any ideas? Thanks in advance! Ryan EDIT: System Restore was, for some reason turned off. Thus, I cannot restore to a working point.

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• php-cgi cpu usage is super high

  - by Ryan Thompson

  I am getting constantly high and wildly fluctuating CPU usage % for php-cgi commands as seen via "top" on my Centos server.. I have a server density account and it seems that this is a common trend: User - PID - CPU % - MEM % - VSZ - RSS - TT - Stat - Started - Time - Command 500 - 6389 - 22.4 - 3 - 271136 - 32380 - ? - S - 20:26 - 0:40 - /usr/bin/php-cgi Seems there are about 6 or so of those records in my processes list at any given check-in. Any ideas what's causing this? I have fast_cgi installed and the module is loading.. Not sure why it isn't handling this though. Any help would be greatly appreciated! Ryan

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• iPhone 3G S sync services problem

  - by Ryan McCue

  When I try and synchronise my iPhone with iTunes, I get a dialog informing me that "syncing has been disabled on this computer". (I've never disabled syncing myself, and it worked perfectly fine a day ago) Music synchronises fine, as do videos, however, my contacts do not. Google Contacts no longer appears in the list to choose from, and the select box is empty. When I choose to re-enable syncing, iTunes informs me that "iTunes was unable to load provider data from Sync Services". I've followed several steps I've found on the internet, including deleting the C:\Users\Ryan\AppData\Roaming\Apple Computer\Sync Services directory, but to no avail. Any ideas on what could be causing this? Is there a Service (in the Windows-form-of-daemon sense) that I accidentally disabled?

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• Outlook DASL Filter - Custom Search

  - by Ryan B

  I'm trying to write a DASL filter to combine three queries: Get all mail with no category and no flag. ("urn:schemas-microsoft-com:office:office#Keywords" IS NULL AND "urn:schemas:httpmail:messageflag" IS NULL) Get all mail that is categorized as "Ryan" and flagged with a red "Today" flag. Don't know how to write this one. Get all mail that is uncategorized and flagged with a red "Today" flag. Don't know how to write this one. Once I have the individual queries, I will combine and OR them. I am stuck on how to filter the flag value.

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• In Windows 7 Home Premium, is it possible to grant a user account the "log on as a service" right and if so, how?

  - by Ryan Johnson

  The title says it all. I need to have the ability for a local user account to log on as a service on a computer running Windows 7 Home Premium. In Windows 7 Ultimate, this is accomplished by going to Control Panel - Administrative Tools - Local Security Policy and adding the user to the "Log on as a service" policy. In Home Premium, there is no Local Security Policy in the Control Panel. Is there another way to add the use to that policy (i.e. registry setting) or is my only recourse to upgrade the computer to Windows 7 Professional? Thanks in Advance, Ryan

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• Is it possible to install Canon EOS T3 Camera Drivers on Windows 7 Embedded

  - by Ryan Johnson

  I have a computer running Windows 7 Embedded. It's an embedded system that will be used in a industrial setting. It needs to be connected to a Canon EOS camera and download pictures from the camera. Other versions of windows come with the Canon drivers so Canon does not provide them as a download on their website. In the past, I had a similar issue with the "N" version of Microsoft Windows Starter and had to download the "Microsoft Media Feature Pack" which then installed the drivers. I attempted to install that on this device, but understandably it complains that its not applicable for this version of windows. So, is there there a feature pack or some other sort of download available that will install the camera drivers? Alternatively, is there some place to get the drivers and manually install them. Thanks in Advance, Ryan

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• iPhone 3G S sync services problem

  - by Ryan McCue

  When I try and synchronise my iPhone with iTunes, I get a dialog informing me that "syncing has been disabled on this computer". (I've never disabled syncing myself, and it worked perfectly fine a day ago) Music synchronises fine, as do videos, however, my contacts do not. Google Contacts no longer appears in the list to choose from, and the select box is empty. When I choose to re-enable syncing, iTunes informs me that "iTunes was unable to load provider data from Sync Services". I've followed several steps I've found on the internet, including deleting the C:\Users\Ryan\AppData\Roaming\Apple Computer\Sync Services directory, but to no avail. Any ideas on what could be causing this? Is there a Service (in the Windows-form-of-daemon sense) that I accidentally disabled?

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• How to code Microsoft Excel "Shift Cells Up" feature in SQL

  - by user293249

  Take a simple table like below: Column Headings: || Agent's Name || Time Logged In || Center || Row 1: Andrew || 12:30 PM || Home Base Row 2: Jeff || 7:00 AM || Virtual Base Row 3: Ryan || 6:30 PM || Test Base Now lets say that a single cell is deleted so the table now looks like this: Column Headings: || Agent's Name || Time Logged In || Center || Row 1: Andrew || 12:30 PM || Row 2: Jeff || 7:00 AM || Virtual Base Row 3: Ryan || 6:30 PM || Test Base Notice that "Home Base" is missing. Now in excel you can delete the cell and shift the rest so the finished product looks like below: Column Headings: || Agent's Name || Time Logged In || Center || Row 1: Andrew || 12:30 PM || Virtual Base Row 2: Jeff || 7:00 AM || Test Base Row 3: Ryan || 6:30 PM || And you can see we are left with a blank cell last row. How do I code this procedure of shifting the cells up in SQL? I've been struggling on this problem for weeks! Thank you!

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• Django many to many annotations and filters

  - by dl8

  So I have two models, Person and Film where they're in a many to many relationship. My goal is to grab a film, and output the persons that have also appeared in at least 10 films. For example I can get the count individually by: >>> Person.objects.get(short__istartswith = "Matt Damon").film_set.count() 71 However, if I try to filter all the actors of a particular film out: >>> Film.objects.get(name__istartswith="Saving Private Ryan").actors.all().annotate(film_count=Count('film')).filter(film_count__gte=10) [] it returns an empty set since if I manually look at everyone's film_count it's 1, even though an actor such as Matt Damon (as seen above) has been in 71 films in my db. As you can see with this query, the annotation doesn't work: >>> Film.objects.get(name__istartswith="Saving Private Ryan").actors.all().annotate(film_count=Count('film'))[0].film_count 1 >>> Film.objects.get(name__istartswith="Saving Private Ryan").actors.all().annotate(film_count=Count('film'))[0].film_set.count() 7 and I can't seem to figure out a way to filter it by the film_set.count()

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• Windows Phone 7 ActiveSync error 86000C09 (My First Post!)

  - by Chris Heacock

  Hello fellow geeks! I'm kicking off this new blog with an issue that was a real nuisance, but was relatively easy to fix. During a recent Exchange 2003 to 2010 migration, one of the users was getting an error on his Windows Phone 7 device. The error code that popped up on the phone on every sync attempt was 86000C09 We tested the following: Different user on the same device: WORKED Problem user on a different device: FAILED   Seemed to point (conclusively) at the user's account as the crux of the issue. This error can come up if a user has too many devices syncing, but he had no other phones. We verified that using the following command: Get-ActiveSyncDeviceStatistics -Identity USERID Turns out, it was the old familiar inheritable permissions issue in Active Directory. :-/ This user was not an admin, nor had he ever been one. HOWEVER, his account was cloned from an ex-admin user, so the unchecked box stayed unchecked. We checked the box and voila, data started flowing to his device(s). Here's a refresher on enabling Inheritable permissions: Open ADUC, and enable Advanced Features: Then open properties and go to the Security tab for the user in question: Click on Advanced, and the following screen should pop up: Verify that "Include inheritable permissions from this object's parent" is *checked*.   You will notice that for certain users, this box keeps getting unchecked. This is normal behavior due to the inbuilt security of Active Directory. People that are in the following groups will have this flag altered by AD: Account Operators Administrators Backup Operators Domain Admins Domain Controllers Enterprise Admins Print Operators Read-Only Domain Controllers Replicator Schema Admins Server Operators Once the box is cheked, permissions will flow and the user will be set correctly. Even if the box is unchecked, they will function normally as they now has the proper permissions configured. You need to perform this same excercise when enabling users for Lync, but that's another blog. :-)   -Chris

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• OpenGL ES Shader help (Blending)

  - by Chris

  Earlier I required assistance getting to grips with how to retain the alpha channel of a transparent texture in my colourised texture shader program. Whilst playing with that first version of my program (before obtaining the solution to my first requirement), I managed to enable transparency for the whole texture (effectively blending via GLSL), and I quite liked this, and I would now like to know if and how it is possible to retain this blending effect, on top of the existing output without affecting the original alpha channel - as I don't know how to input this transparency via the parameter that is already being provided with the textures alpha channel. A basic example of the blending program I am referring to (minus any other functionality) is as follows... varying vec2 texCoord; uniform sampler2D texSampler; void main() { gl_FragColor = vec4(texture2D(texSampler,texCoord).xyz,0.5); } Where 0.5 is the transparency (blending effect) of the whole texture. This is the current version of my program, which provides the ability to colour a texture according the colour parameter passed to the program, and retains the alpha channel of the original texture. varying vec2 texCoord; uniform sampler2D texSampler; uniform vec3 colour; void main() { gl_FragColor = vec4(colour,1) * vec4(texture2D(texSampler,texCoord).xyz,texture2D(texSampler,texCoord).w); } I need to know if it is possible to apply transparency on top this program, without affecting the original alpha channel which I have already preserved. I hope this makes enough sense, I am sure it is possible, and if so I should imagine it is rather simple, but this has me stumped. Any help much appreachiated. Cheers, Chris

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• Friday Tips #33

  - by Chris Kawalek

  Happy Friday, everyone! Our tip this week is from an excellent white paper written by our own Greg King titled Oracle VM 3: Building a Demo Environment using Oracle VM VirtualBox. In it, Greg gives you everything you need to know to set up Oracle VM Server inside of Oracle VM VirtualBox for testing and demoing. The section we're highlighting below is on how to configure the network interfaces of your virtual machines: VirtualBox comes with a few different types of network interfaces that can be used to allow communication between the VM guests and the host operating system, including network interfaces that will allow the VM guests to communicate with local and wide area networks accessed from your laptop or personal computer. However, for the purpose of the demonstration environment we will limit the network communication to include access just between your desktop and the virtual machines being managed by VirtualBox. The install process for Oracle VM VirtualBox creates a single host-only network device on your laptop or personal computer. Using the host-only network device will allow you to open a browser on your desktop to access the Oracle VM Manager running within the VirtualBox VM guest. The device will only allow network traffic between the VM guests and your host operating system, but nothing outside the confines of your laptop or personal computer. We will need to add a second host-only network since the Oracle VM Server appliance has both eth0 and eth1 configured. You can choose to use eth1 on the Oracle VM Servers or not use them – the choice is yours. But, at least the host side network device will exist if you decide to use it. Greg goes on to describe in detail how to setup the network interfaces, so you can head on over to the paper and get even more info. See you next week! -Chris 

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• Friday Tips #4

  - by Chris Kawalek

  It's time once again for our Friday tip. Our question today is about how to determine how much video RAM to allocate for your virtual machines in a VDI deployment: Question: How much video RAM do I really need on my VirtualBox VMs? Answer by John Renko, Consulting Developer, Oracle: The answer is in the VirtualBox admin guide but it's seldom followed correctly, usually resulting in excess unused RAM to be allocated. The formula for determining how much RAM to allocate is shown below for a 32 bit fullscreen 22" monitor supporting 1680x1050: bit depth / 8 x horizontal res x vertical res / 1024 / 1024 = MB RAM Which translates to: 32 bits / 8 x 1680 x 1050 / 1024 / 1024 = 6.7 MB If you wanted to support dual 22" monitors, you would need twice that, so 13.4 MB. Anything in excess of what is needed is readily allocated but not used and would be better suited for running more VMs! Thanks John, that tip should help folks squeeze a little more out of their VDI servers. And remember, if you have a question for us, use hash tag #AskOracleVirtualization on Twitter. We'll see you next week with another tip! -Chris 

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• How to ...set up new Java environment - largely interfaces...

  - by Chris Kimpton

  Hi, Looks like I need to setup a new Java environment for some interfaces we need to build. Say our system is X and we need to interfaces to systems A, B and C. Then we will be writing interfaces X-A, X-B, X-C. Our system has a bus within it, so the publishing on our side will be to the bus and the interface processes will be taking from the bus and mapping to the destination system. Its for a vendor based system - so most of the core code we can't touch. Currently thinking we will have several processes, one per interface we need to do. The question is how to structure things. Several of the APIs we need to work with are Java based. We could go EJB, but prefer to keep it simple, one process per interface, so that we can restart them individually. Similarly SOA seems overkill, although I am probably mixing my thoughts about implementations of it compared to the concepts behind it... Currently thinking that something Spring based is the way to go. In true, "leverage a new tech if possible"-style, I am thinking maybe we can shoe horn some jruby into this, perhaps to make the APIs more readable, perhaps event-machine-like and to make the interface code more business-friendly, perhaps even storing the mapping code in the DB, as ruby snippets that get mixed in... but thats an aside... So, any comments/thoughts on the Spring approach - anything more up-to-date/relevant these days. EDIT: Looking a JRuby further, I am tempted to write it fully in JRuby... in which case do we need any frameworks at all, perhaps some gems to make things clearer... Thanks in advance, Chris

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