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• Bootloader Problems Grub Won't Load Windows 7

  - by user108805

  I sent this to [email protected], still no response thought I could get a faster solution here. I am running Windows 7 64-bit and Ubuntu 12.04 LTS on separate partitions. The message is sent is: Boot-Repair URL: http://paste.ubuntu.com/1365163/ Originally I was unable to access Ubuntu after a windows update (Ubuntu was installed using wubi). Rather than logging into Ubuntu from the Windows 7 Bootloader, it lead to the grub command prompt. No matter what I did here, it would not log me into linux. As a result I uninstalled Ubuntu from the Add/Remove Programs application in Windows 7. I then re-installed Ubuntu 12.04 LTS using a liveCD-USB. This time however, I created a partition. I then restarted and got the GRUB bootloader which loads Ubuntu 12.04 LTS with no problems, however when I select windows (listed as "Windows 7 (loader)"), it just refreshes the grub bootloader instead of loading Windows 7. I then used the Windows 7 repair disk to run bootrec/fixmbr and bootrec/fixboot. This led to no bootloader coming up when I started my computer. Instead I got a blank black screen with a flashing white cursor. I went on to do a bootrec/buildbcd and bootrec/scanos. These did nothing to change the situation. When I ran bootrec/scanos it said that no Windows 7 installations were present. After this I decided to reinstall WIndows 7 only for this to do nothing to change the situation. Afterwards I did a boot-repair in which I began to get the GRUB bootloader, which would load ubuntu 12.04 LTS, but still would not load Windows 7. I also did a sudo update-grub which recognized Windows 7 as being installed, but still didn't fix the issue of loading Windows 7. While running Ubuntu I have no problem accessing my WIndows 7 partition which is formatted as NTFS. It shows all the files and folders reflecting that the re-install did take place, and it also shows all of my old applications and folders in the Windows.old folder. I am completely stuck at this point and have no clue what I should do next. Any help you can offer me will be greatly appreciate. Thank You --gap

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• Office 2010 Professional Plus (Top 10 reasons to upgrade)

  - by mbcrump

  Being a huge nerd, I decided that I would go ahead and upgrade to the latest and greatest office. That being, Office 2010 Professional Plus. The biggest concern that I had was loosing all my mail settings from Outlook 2007. Thankfully, it upgrade gracefully and worked like a charm. So lets start this top 10 list. 1) You can upgrade without fear of loosing all your stuff! As you can tell by the screenshot below, you can select what you want to do. I selected to remove all previous versions.    2) Outlook conversations: Just like GMail, you can now group emails by conversations. This is simply awesome and a must have. 3) The ability to ignore conversations. If you are on a email thread that has nothing to do with you. Simply “ignore” the conversation and all emails go into the deleted folder. 4) Quick Steps, do you send an email to the same team member or group constantly. With quick steps, its just one click away. 5) Spell check in the Subject line! 6)  Easier Screenshots, built in just click the button. No more ALT-Printscreen for those that are not aware of the awesome SnagIT 10 that's out. 7) Open in protected view. When you open a document from an email attachment, it lets you know the file may be unsafe. You can click a button to enable editing. This is great for preventing macros.       8) Excel has always had a variety of charts and graphs available to visually depict data and trends. With Excel 2010, though, Microsoft has added a new feature called Sparklines, which allows you to place a mini-graph or trend line in a single cell. The Sparklines are a cool way to quickly and simply add a visual element without having to go through the effort of inserting a graph or chart that overwhelms the worksheet. 9) Contact actions. If you hover over a name in the form or fields on an email, you get a popup giving you several actions you can perform on the person such as adding them to your Outlook contacts, scheduling a meeting, viewing their stored contact information if they are already in your contacts, sending an instant message or even starting a telephone call. 10) Windows 7 Task Bar Context Menu – I love the jumplist. I don’t know how much that I would actually use it but it just rocks.

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• Several New Hints

  - by Ondrej Brejla

  Hi all! Today we would like to introduce you some of our new experimental hints for NetBeans 7.2. They are called: Unused Use Statement and Immutable Variables. Unused Use Statement This hint is quite simple. It highlights (underlines) your use statements, which are not used. Typical use case is after some refactoring, when you forgot to remove some obsolete use statements. This hint warns you on them and allows you to remove them easily. Just click on the hint bulb in the gutter and select Remove Unused Use Statement. And of course, it works in multiple use statements combined too. Immutable Variables The next one is the hint which checks too many assignments into a variable. And why? That's simple. Mostly you should use just one assignment into one variable. But sometimes you are lazy and you do something like: But it's quite wrong, because what you really do is: And that's exactly the case, when our new hint warns you, that Too many assignments (2) into variable $foo occured. Nothing more. Yes, we know that there are some cases, where could be more assignments and no warning should occur, e.g.: Because maybe one likes longer increment syntax more than the short one. So we tried to handle these cases to don't bother you if it's not a need. Note: We are almost sure that this hint doesn't cover all your use cases, because there are a lot of them. So if you find something strange, write it into our bugzilla so we can handle it better for you. Thanks for your patience! And the last thing is, that you can set the number of allowed assignments in Tools -> Options -> Editor -> Hints -> PHP: Immutable Variables. Note: This hint works just for a common variables, not for fields. We have an enhancement request for that and it should be implemented in next version of NetBeans (probably 7.3). And that's all for today and as usual, please test it and if you find something strange, don't hesitate to file a new issue (product php, component Editor). Thanks.

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• Ubuntu is booting on acer e1-510 laptop, but screen displays nothing

  - by user287602

  Tried loading ubuntu 12.04 (32-bit as well 64 bit) through bootable usb , on a brand new 64-bit acer E1-510 laptop. It shows the 'Try ubuntu without installing screen' and I selected that option. But instead of showing ubuntu's logo(which implies it is loading). I get a blank screen. The screen is on, but it shows nothing. I tried the same on an old model laptop acer aspire 5738 and it worked like a charm. However, I realized that Ubuntu is actually booting on E1-510 and only the display is not working. How did I arrive at this conclusion? When I select on 'Try ubuntu without installing screen', after about 8-10 seconds I see that the WiFi indicator light on the laptop panel switches on(just like when we boot up a Windows OS or even Ubuntu ). I got an idea that the system booted Ubuntu. To confirm this, I tried to adjust volume using keyboard shortcuts. Voila, I can hear the sound of adjusting volume! That means it has already booted Ubuntu. I confirmed this with another step. I pressed the power button once and after two seconds I pressed ENTER. It began the process of switching off and within 5 seconds the laptop was powered off. You may ask, Why is this a confirmation that Ubuntu has booted? This is because in Ubuntu when you press on power button, a dialog box opens with shut down, restart, suspend option- and the shut down option is already selected by default; so all I have to do is press ENTER to shut down. This again proved that Ubuntu was indeed up and running. Unlike previous 'AskUbunutu' posts about Acer e1-510, I must mention that my laptop came WITH the Legacy BIOS mode, so its not really a problem to boot ubuntu from a bootable pendrive. Only the screen is not working. In case you need to know, I am running Windows 7-Ultimate 64 bit on acer e1-510.

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• Exchange 2010, Exchange 2003 Mail Flow issue

  - by Ryan Roussel

  While performing the initial Exchange 2010 deployment for a customer migrating from Exchange 2003, I ran into an issue with mail flow between the two environments.  The Exchange 2003 mailboxes could send to Exchange 2010, as well as to and from the internet.  Exchange 2010 mailboxes could send and receive to the internet, however they could not send to Exchange 2003 mailboxes.   After scouring the internet for a solution, it seemed quite a few people were experiencing this issue with no resolution to be found, or at least not easily.  After many attempts of manually deleting and recreating the routing group connectors,  I finally lucked onto the answer in an obscure comment left to another blogger.   If inheritable permissions are not allowed on the Exchange 2003 object in the Active Directory schema, exchange server authentication cannot be achieved between the servers.   It seems when Blackberry Enterprise Server gets added to 2003 environments, a lot of Admins get tricky and add the BES Admin user explicitly to the server object  to allow  inheritance down from there to all mailboxes.  The problem is they also coincidently turn off inheritance to the server object itself from its parent containers.  You can re-establish inheritance without overwriting the existing ACL however so that the BES Admin can remain in the server object ACL.   By re-establishing inheritance to the 2003 server object, mail flow was instantly restored between the servers.    To re-establish inheritance: 1. Open ASDIedit by adding the snap-in to a MMC (should be included on your 2008 server where Exchange 2010 is installed) 2. Navigate to Configuration > Services > Microsoft Exchange > Exchange Organization > Administrative Groups > First Administrative Group > Servers 3. In the right pane, right click on the CN=Server Name of your Exchange 2003 Server, select properties 4. Navigate to the Security tab, hit advanced toward the bottom. 5. Check the checkbox that reads “include inheritable permissions” toward the bottom of the dialogue box.

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• How do I maintain a really poorly written code base?

  - by onlineapplab.com

  Recently I got hired to work on existing web application because of NDA I'm not at liberty to disclose any details but this application is working online in sort of a beta testing stage before official launch. We have a few hundred users right now but this number is supposed to significantly increase after official launch. The application is written in PHP (but it is irrelevant to my question) and is running on a dual xeon processor standalone server with severe performance problems. I have seen a lot of bad PHP code but this really sets new standards, especially knowing how much time and money was invested in developing it. it is as badly coded as possible there is PHP, HTML, SQL mixed together and code is repeated whenever it is necessary (especially SQL queries). there are not any functions used, not mentioning any OOP there are four versions of the app (desktop, iPhone, Android + other mobile) each version has pretty much the same functionality but was created by copying the whole code base, so now there are some differences between each version and it is really hard to maintain the database is really badly designed, which is causing severe performance problems also for fixing some errors in PHP code there is a lot of database triggers used which are updating data on SELECT and on INSERT so any testing is a nightmare Basically, any sin of a bad programming you can imagine is there for example it is not only possible to use SQL injections in literally every place but you can log into app if you use a login which doesn't exist and an empty password. The team which created this app is not working on it any more and there is an outsourced team which suggested that there are some problems but was never willing to deal with the elephant in the room partially because they've got a very comfortable contract and partially due to lack of skills (just my opinion). My job was supposed to be fixing some performance problems and extending existing functionality but first thing I was asked to do was a review of the existing code base. I've made my review and it was quite a shock for the management but my conclusions were after some time finally confirmed by other programmers. Management made it clear that it is not possible to start rewriting this app from scratch (which in my opinion should be done). We have to maintain its operable state and at the same time fix performance errors and extend the functionality. My question is, as I don't want just to patch the existing code, how to transform this into properly written app while keeping the existing code working at the same time? My plan is: Unify four existing versions into common code base (fixing only most obvious errors). Redesign db and use triggers to populate it with data (so data will be maintained in two formats at the same time) All new functionality will be written as separate project. Step by step transfer existing functionality into the new project After some time everything will be in the new project Some explanation about #2, right now it is practically impossible to make any updates in existing db any change requires reviewing whole code and making changes in many places. Is such plan feasible at all? Another solution is to walk away and leave the headache to someone else.

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• Syncing client and server CRUD operations using json and php

  - by Justin

  I'm working on some code to sync the state of models between client (being a javascript application) and server. Often I end up writing redundant code to track the client and server objects so I can map the client supplied data to the server models. Below is some code I am thinking about implementing to help. What I don't like about the below code is that this method won't handle nested relationships very well, I would have to create multiple object trackers. One work around is for each server model after creating or loading, simply do $model->clientId = $clientId; IMO this is a nasty hack and I want to avoid it. Adding a setCientId method to all my model object would be another way to make it less hacky, but this seems like overkill to me. Really clientIds are only good for inserting/updating data in some scenarios. I could go with a decorator pattern but auto generating a proxy class seems a bit involved. I could use a generic proxy class that uses a __call function to allow for original object data to be accessed, but this seems wrong too. Any thoughts or comments? $clientData = '[{name: "Bob", action: "update", id: 1, clientId: 200}, {name:"Susan", action:"create", clientId: 131} ]'; $jsonObjs = json_decode($clientData); $objectTracker = new ObjectTracker(); $objectTracker->trackClientObjs($jsonObjs); $query = $this->em->createQuery("SELECT x FROM Application_Model_User x WHERE x.id IN (:ids)"); $query->setParameters("ids",$objectTracker->getClientSpecifiedServerIds()); $models = $query->getResults(); //Apply client data to server model foreach ($models as $model) { $clientModel = $objectTracker->getClientJsonObj($model->getId()); ... } //Create new models and persist foreach($objectTracker->getNewClientObjs() as $newClientObj) { $model = new Application_Model_User(); .... $em->persist($model); $objectTracker->trackServerObj($model); } $em->flush(); $resourceResponse = $objectTracker->createResourceResponse(); //Id mappings will be an associtave array representing server id resources with client side // id. //This method Dosen't seem to flexible if we want to return additional data with each resource... //Would have to modify the returned data structure, seems like tight coupling... //Ex return value: //[{clientId: 200, id:1} , {clientId: 131, id: 33}];

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• [EF + Oracle] Intro

  - by JTorrecilla

  Prologue I have a busy personal and working time, and at this moment that I start to get more free time, I decided to start a Serie about Entity Framework with Oracle. A few time ago, I got my first experience with EF and Oracle with Oracle 10 g express and Oracle 10 g with the same results, Doesn’t work. Now I download Oracle 11 g to Test again. Tools To start using EF with Oracle we need the following: 1. Visual Studio 2010. No Express Edition 2. Oracle 11g 3 Oracle Driver for EF (ODAC) Intro People, who are starting with EF developments, I recommend to take a look into Unai Zorrilla’s Blog, the post were written in Spanish but they are great! To this Serie, we are going to define the DB from the Oracle administrator. For that we need to follow the next steps: 1. Create a User with a PassWord. In my example the user will be Jtorrecilla 2. Create a TableSpace 3. Define some example tables   (Image1) When we have created the DB, we are going to start a new project in VS 2010. I will start a C# Project. To start with EF, we need to add a new objet to our Project “ADO .NET Entity Data Model". (Image2) The next step will be to indicate that our model will be based on an existing DB, and indicate the connection string (Images 3 and 4): (Imagen3) (Imagen4) Once we selected the connection string, we will need to indicate that in the connection will be saved “Sensitive” data (Image 5), and in the next step we are going to select the DB objets to use in the project(Image 6).   (Image 5) (Image 6) A the end of the selection, we will press Finish button, and it will generate a EDMX file to add to our solution, and in the IDE will appear the DB Schema with the selected Tables and Relations. (Imagen7) One Entity is composed by a set of properties (each matches with a column from the Table in the DB) and Navigation Properties that represents any relation with other Entities.   Finally With this chapter we have installed the environment, defined a DB and configured the solution to start using EF with Oracle. In the next chapter we are going to see What is a Entity and how it works. I hope you enjoy this Serie!

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• New ZFS Encryption features in Solaris 11.1

  - by darrenm

  Solaris 11.1 brings a few small but significant improvements to ZFS dataset encryption.  There is a new readonly property 'keychangedate' that shows that date and time of the last wrapping key change (basically the last time 'zfs key -c' was run on the dataset), this is similar to the 'rekeydate' property that shows the last time we added a new data encryption key. $ zfs get creation,keychangedate,rekeydate rpool/export/home/bob NAME PROPERTY VALUE SOURCE rpool/export/home/bob creation Mon Mar 21 11:05 2011 - rpool/export/home/bob keychangedate Fri Oct 26 11:50 2012 local rpool/export/home/bob rekeydate Tue Oct 30 9:53 2012 local The above example shows that we have changed both the wrapping key and added new data encryption keys since the filesystem was initially created.  If we haven't changed a wrapping key then it will be the same as the creation date.  It should be obvious but for filesystems that were created prior to Solaris 11.1 we don't have this data so it will be displayed as '-' instead. Another change that I made was to relax the restriction that the size of the wrapping key needed to match the size of the data encryption key (ie the size given in the encryption property).  In Solaris 11 Express and Solaris 11 if you set encryption=aes-256-ccm we required that the wrapping key be 256 bits in length.  This restriction was unnecessary and made it impossible to select encryption property values with key lengths 128 and 192 when the wrapping key was stored in the Oracle Key Manager.  This is because currently the Oracle Key Manager stores AES 256 bit keys only.  Now with Solaris 11.1 this restriciton has been removed. There is still one case were the wrapping key size and data encryption key size will always match and that is where they keysource property sets the format to be 'passphrase', since this is a key generated internally to libzfs and to preseve compatibility on upgrade from older releases the code will always generate a wrapping key (using PKCS#5 PBKDF2 as before) that matches the key length size of the encryption property. The pam_zfs_key module has been updated so that it allows you to specify encryption=off. There were also some bugs fixed including not attempting to load keys for datasets that are delegated to zones and some other fixes to error paths to ensure that we could support Zones On Shared Storage where all the datasets in the ZFS pool were encrypted that I discussed in my previous blog entry. If there are features you would like to see for ZFS encryption please let me know (direct email or comments on this blog are fine, or if you have a support contract having your support rep log an enhancement request).

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• Embracing Imperfection

  - by Johnm

  The pursuit of perfection is a road on which we often find ourselves traveling. It is an unpaved road filed with pot-holes and ruts that often destroy our stride. The shoulders of this road are lined with the bones and rotting carcasses of well planned projects, solutions and dreams of others who have dared the journey. Often the choice to engage in this travel is a compulsive one. We can't help but to pack our bags and make the trip. We justify it by equating it to the delivery of a quality product or service. We use our past travels as validation of our worthiness and value. Our shared experience, as tortured pilgrims of perfection, reveals that each odyssey that bewitched us resulted in a stark reminder of the very weaknesses and fears that we were attempting to mollify. The voice of the critic that berated us for the lack of craftsmanship was our own. Although, at the end of the journey our own critical voice was joined by the gnashing of teeth of those who could not reap the fruit of your labor due to its lack of timely delivery. There is another road in which to travel. It is the pursuit of embracing imperfection. The cost of traveling this route is your contribution to its eternal construction. Each segment is designed uniquely. At times it has the appearance of a patchwork quilt; while other times it is well organized and highly measured. In all cases, its construction has continually advanced and been utilized as each segment was delivered by its architect. Those who choose to select this spindle of these crossroads crack open the shells of their fears to reveal the vapor that is within. They construct their houses upon these shells. Through their hunger for mastery they wring every drop of nectar from failure and discard its husks to the ditches of this road. Through their efforts the thoroughfare begins to develop a personality of its own, a beautifully human one, rich with the strengths and weaknesses of all of its contributors. Like many of us, the pursuit of perfection has not served me well. In fact, I would say that it has been more damaging than it has been helpful. While the perfectionist in me occasionally makes its presence known, I consider myself a "recovering perfectionist". It is evident to me that there is immense beauty found in imperfection. I choose to embrace it. It is grounding. It is constructive. It is honest.

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• Profiling Startup Of VS2012 &ndash; Ants Profiler

  - by Alois Kraus

  I just downloaded ANTS Profiler 7.4 to check how fast it is and how deep I can analyze the startup of Visual Studio 2012. The Pro version which is useful does cost 445€ which is ok. To measure a complex system I decided to simply profile VS2012 (Update 1) on my older Intel 6600 2,4GHz with 3 GB RAM and a 32 bit Windows 7. Ants Profiler is really easy to use. So lets try it out. The Ants Profiler does want to start the profiled application by its own which seems to be rather common. I did choose Method Level timing of all managed methods. In the configuration menu I did want to get all call stacks to get full details. Once this is configured you are ready to go.   After that you can select the Method Grid to view Wall Clock Time in ms. I hate percentages which are on by default because I do want to look where absolute time is spent and not something else.   From the Method Grid I can drill down to see where time is spent in a nice and I can look at the decompiled methods where the time is spent. This does really look nice. But did you see the size of the scroll bar in the method grid? Although I wanted all call stacks I do get only about 4 pages of methods to drill down. From the scroll bar count I would guess that the profiler does show me about 150 methods for the complete VS startup. This is nonsense. I will never find a bottleneck in VS when I am presented only a fraction of the methods that were actually executed. I have also tried in the configuration window to also profile the extremely trivial functions but there was no noticeable difference. It seems that the Ants Profiler does filter away way too many details to be useful for bigger systems. If you want to optimize a CPU bound operation inside NUnit then Ants Profiler is with its line level timings a very nice tool to work with. But for bigger stuff it is certainly not usable. I also do not like that I must start the profiled application from the profiler UI. This makes it hard to profile processes which are started by some other process. Next: JetBrains dotTrace

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• Oracle Social Network Developer Challenge: HarQen Nodal

  - by Kellsey Ruppel

  Originally posted by Jake Kuramoto on The Apps Lab blog. We wrapped the Oracle Social Network Developer Challenge last week at OpenWorld, and this week, I’ll be sharing all the entries. All the teams that entered our challenge did a ton of work and built really interesting integrations with Oracle Social Network, and I want to showcase their hard work and innovative ideas. Today, I give you Nodal from the HarQen (@harqen) team, Kris Gösser (@krisgosser), Jesse Vogt (@jesse_vogt) and Matt Stockton (@mstockton). The guys from HarQen built Nodal to provide a visual way to navigate your connections and conversations in Oracle Social Network and view relationships. Using Nodal, you can: Search through names and profiles in Oracle Social Network. Choose people and view their social graphs in a visually useful way. Expand nodes in the social graph and add that person’s social graph to the Nodal view for comparison. Move nodes around and lock them in place for easier viewing, using a physics engine for movement. Adjust the physics engine properties according to your viewing preferences. Select nodes in the social graph and create a conversation directly based on the selection. Here are some shots of Nodal. They really don’t do the physics engine justice, but maybe the guys at Harqen will post a video of what they did for your viewing pleasure. #gallery-1 { margin: auto; } #gallery-1 .gallery-item { float: left; margin-top: 10px; text-align: center; width: 33%; } #gallery-1 img { border: 2px solid #cfcfcf; } #gallery-1 .gallery-caption { margin-left: 0; }   Nodal’s visuals wowed the judges and the audience, and anyone with a decent-sized social network presence understands the need for good network visualization. Tools like Nodal allow you to discover hidden connections in your network and maximize the value of your weak ties and find mavens, a very important key to getting work done. Thanks to the HarQen team for participating in our challenge. We hope they had a good experience. Look for the details of the other entries this week.

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• COLLABORATE 13 Call for Papers

  - by Marc Weintraub

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Attention PeopleSoft customers!  Speak at the largest user-led PeopleSoft conference of the year and attend for free! Interested in submitting a presentation for COLLABORATE 13? October 12 is the deadline to submit your abstract. The COLLABORATE 13- Quest forum is your home for high-level education sessions around PeopleSoft. Presenting doesn’t just mean giving a solo lecture: you can present with a vendor, give a demonstration (internet will be provided), facilitate a hot topic discussion or even offer best practices from an experience your company has been through. Remember, to submit an abstract now, all you need is a short description of your presentation. Think you don't have a story to tell? Think again! Check out the COLLABORATE 13- Quest forum now to better understand what we are looking for. A selection committee of other PeopleSoft users will review all sessions and select the most relevant, customer-focused sessions possible to make COLLABORATE a great learning experience for everyone. Don't forget, one speaker from each session selected will be eligible to receive a complimentary registration to the entire event *some rules apply. Also, don’t forget to include your functional counterpart. The selection committee is looking to increase the amount of functional users attending and want to help them glean the most out of the event. Thank you for your time and please let the selection committee know if you have any questions about submitting a presentation. We look forward to seeing you at COLLABORATE 13 in Denver! Quest's COLLABORATE '13 website - http://www.questdirect.org/collaborate /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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• Use Expressions with LINQ to Entities

  - by EltonStoneman

  [Source: http://geekswithblogs.net/EltonStoneman] Recently I've been putting together a generic approach for paging the response from a WCF service. Paging changes the service signature, so it's not as simple as adding a behavior to an existing service in config, but the complexity of the paging is isolated in a generic base class. We're using the Entity Framework talking to SQL Server, so when we ask for a page using LINQ's .Take() method we get a nice efficient SQL query for just the rows we want, with minimal impact on SQL Server and network traffic. We use the maximum ID of the record returned as a high-water mark (rather than using .Skip() to go to the next record), so the approach caters for records being deleted between page requests. In the paged response we include a HasMorePages indicator, computed by comparing the max ID in the page of results to the max ID for the whole resultset - if the latter is bigger, then there are more pages. In some quick performance testing, the paged version of the service performed much more slowly than the unpaged version, which was unexpected. We narrowed it down to the code which gets the max ID for the full resultset - instead of building an efficient MAX() SQL query, EF was returning the whole resultset and then computing the max ID in the service layer. It's easy to reproduce - take this AdventureWorks query:             var context = new AdventureWorksEntities();             var query = from od in context.SalesOrderDetail                         where od.ModifiedDate >= modified                          && od.SalesOrderDetailID.CompareTo(id) > 0                         orderby od.SalesOrderDetailID                         select od;   We can find the maximum SalesOrderDetailID like this:             var maxIdEfficiently = query.Max(od => od.SalesOrderDetailID);   which produces our efficient MAX() SQL query. If we're doing this generically and we already have the ID function in a Func:             Func<SalesOrderDetail, int> idFunc = od => od.SalesOrderDetailID;             var maxIdInefficiently = query.Max(idFunc);   This fetches all the results from the query and then runs the Max() function in code. If you look at the difference in Reflector, the first call passes an Expression to the Max(), while the second call passes a Func. So it's an easy fix - wrap the Func in an Expression:             Expression<Func<SalesOrderDetail, int>> idExpression = od => od.SalesOrderDetailID;             var maxIdEfficientlyAgain = query.Max(idExpression);   - and we're back to running an efficient MAX() statement. Evidently the EF provider can dissect an Expression and build its equivalent in SQL, but it can't do that with Funcs.

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• Does the Ubuntu One sync work?

  - by bisi

  I have been on this for several hours now, trying to get a simple second folder to sync with my (paid) account. I cannot tell you how many times I removed all devices, removed stored passwords, killed all processes of u1, logged out and back in online...and still, the tick in the file browser (Synchronize this folder) is loading and loading and loading. Also, I have logged out, rebooted countless times. And this is after me somehow managing to get the u1 preferences to finally "connect" again. I have also checked the status of your services, and none are close to what I am experiencing. And I have checked the suggested related questions above! So please, just confirm whether it is a problem on my side, or a problem on your side. EDIT: In the mean time, here is what has changed, on top of what is mentioned just above. • My files went from 0MB to 71.9MB, and is still rising. • My first folder of 400.2MB is being filled with the data as I write this. The second folder has the folder sub-structure in place. • Both folders now show in the File Browser that it will be synchronized. I believe that right now, it is all back to normal and working fine, and I guess that's what a good night's sleep can do ;). And we're now only back to the point where synchronizing is slow, but will pick up with the release of Natty (https://wiki.ubuntu.com/UbuntuOne/FAQ/WhyIsItTakingSoLongForMyFilesToSync). But to get to the questions: My about says I use 11.04, Natty Narwhal, but I am quite sure the last distribution I installed was 10.10. Folder A is 400.2MB, and Folder B is 29.5MB I am on a DSL line, behind a regular fritz.box setting. No proxy servers in use, and I did not install any particular firewall features. No physical firewall, just the router (on which I have a TV signal as well), and 2 switches to get to this floor. Status: inactive The ubuntuone-indicator runs the same window as when I click on my name on the top-right corner and select Ubuntu one, or in the Control Center choose Ubuntu one. It wasn't supposed to go further than this was it?

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• Combobox binding with different types

  - by George Evjen

  Binding to comboboxes in Silverlight has been an adventure the past couple of days. In our framework at ArchitectNow we use LookupGroups and LookupValues. In our database we would have a LookupGroup of NBA Teams for example. The group would be called NBATeams, we get the LookupGroupID and then get the values from the LookupValues table. So we would end up with a list of all 30+ teams. Our lookup values entity has a display text(string), value(string), IsActive and some other fields. With our applications we load all this information into the system when the user is logging in or right after they login. So in cache we have a list of groups and values that we can get at whenever we want to. We get this information in our framework simply by creating an observable collection of type LookupValue. To get a list of these values into our property all we have to do is. var NBATeams = AppContext.Current.LookupSerivce.GetLookupValues(“NBATeams”); Our combobox then is bound like this. (We use telerik components in most if not all our projects) <telerik:RadComboBox ItemsSource="{Binding NBATeams}”></telerik:RadComboBox> This should give you a list in your combobox. We also set up another property in our ViewModel that is a just single object of NBATeams  - “SelectedNBATeam” Our selectedItem in our combobox would look like, we would set this to a two way binding since we are sending data back. SelectedItem={Binding SelectedNBATeam, mode=TwoWay}” This is all pretty straight forward and we use this pattern throughout all our applications. What do you do though when you have a combobox in a ItemsControl or ListBox? Here we have a list of NBA Teams that are a string that are being brought back from the database. We cant have the selected item be our LookupValue because the data is a string and its being bound in an ItemsControl. In the example above we would just have the combobox in a form. Here though we have it in a ItemsControl, where there is no selected item from the initial ItemsSource. In order to get the selected item to be displayed in the combobox you have to convert the LookupValue to a string. Then instead of using SelectedItem in the combobox use SelectedValue. To convert the LookupValue we do this. Create an observable collection of strings public ObservableCollection<string> NBATeams { get; set;} Then convert your lookups to strings var NBATeams = new ObservableCollection<string>(AppContext.Current.LookupService.GetLookupValues(“NBATeams”).Select(x => x.DisplayText)); This will give us a list of strings and our selected value should be bound to the NBATeams property in our ItemsSource in our ItemsControl. SelectedValue={Binding NBATeam, mode=TwoWay}”

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• Enterprise with eyes on NoSQL

  - by thegreeneman

  Since joining Oracle a few months back, I have had the fortune of being able to interact with a number of large enterprise organizations and discuss their current state of adoption for NoSQL database technology.   It is worth noting that a large percentage of these organizations do have some NoSQL use and have been steadily increasing their understanding of its applicability for certain data management workloads.   Thru those discussions I’ve learned that it seems one of the biggest issues confronting enterprise adoption of NoSQL databases is the lack of standards for access, administration and monitoring.    This was not so much of an issue with the early adopters of NoSQL technology because they employed a highly DevOps centric approach to application deployment leaving a select few highly qualified developers with the task of managing the production of the system that they designed and implemented. However, as NoSQL technology moves out of the startup and into the hands of larger corporate entities, developers with a broad skill set that are capable of both development and I.T. type production management are in short supply and quickly get moved on to do new projects, often moving to different roles within the company.  This difference in the way smaller more agile startups operate as compared to more established companies is revealing a gap in the NoSQL technology segment that needs to get addressed.    This is one of places that a company such as Oracle has a leg up in the NoSQL Database front.  A combination of having gone thru a past database maturization process,  combined with a vast set of corporate relationships that have grown hand in hand to solve these types of issues, Oracle is in a great place to lead the way in closing the requirements gap for NoSQL technology.  Oracle's understanding of the needs specific to mature organizations have already made their way into the Oracle’s NoSQL Database offering with features such as:  One click cluster deployment with visual topology planning,  standards based monitoring protocols such as SNMP, support for data access for reporting via standard SQL  and integration with emerging standards for data access such as MapReduce.  Given the exciting developments we’re driving in the Oracle NoSQL Database group, I will have a lot more to say about this topic as we move into the second half of the year.

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• Brocken package manager due to incorrect Banshee package

  - by user54974

  Sup, so, I'm not familiar with linux at all so help is much appreciated. I've been trying to boot my pc up from a live CD unsuccessfully. I get to the stage at which there are the options to test without installing or install or so on where I select 'Install Ubuntu.' Here it relays through some fast DOS commands until it reaches 'end trace' and then, eventually, 'Killed.' I have already got a functional 11.10 version installed, could this be a problem? The reason I am attempting a reinstall is because the package system is damaged inside 11.10, a problem I can't seem to solve. If I try to install any new software from within the software centre it tells me that two banshee extensions must be removed. I try to remove these from inside the terminal, using apt-get remove, which results in:** You might want to run apt-get -f install to correct these: The following packages have unmet dependencies. banshee-extension-ubuntuonemusicstore : Depends: banshee (>= 2.2.1) but 2.2.0-1ubuntu2 is to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). The software centre suggests that I disable all third party repositories and run apt-get install -f I have done so but the package system remains damaged and apt-get install -fattempts to install banshee 2.2.1 but returns: Errors were encountered while processing: /var/cache/apt/archives/banshee_2.2.1-1ubuntu3_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1) I have also tried apt-get update (runs fine) and apt-get upgrade. The upgrade command apt-get upgrade results in: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run ‘apt-get -f install’ to correct these. The following packages have unmet dependencies. banshee-extension-soundmenu : Depends: banshee (>= 2.2.1) but 2.2.0-1ubuntu2 is installed banshee-extension-ubuntuonemusicstore : Depends: banshee (>= 2.2.1) but 2.2.0-1ubuntu2 is installed E: Unmet dependencies. Try using -f. I seem to be going round and round in circles here! If only I could reinstall successfully. Only proposed updates (oneiric proposed) is not enabled.

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• preview form using javascript in popup

  - by user1015309

  please I need some help in previewing a form in popup. I have a form, quite big, so I added the option of preview to show as popup. The lightbox form popup works well, but the problem I now have is function passform ()passing the inputs(textfield, select, checkbox, radio) into the popup page for preview on Click(). Below are my javascript and html codes. I left the css and some html out, because I think they're not needed. I will appreciate your help. Thank you The Javascript function gradient(id, level) { var box = document.getElementById(id); box.style.opacity = level; box.style.MozOpacity = level; box.style.KhtmlOpacity = level; box.style.filter = "alpha(opacity=" + level * 100 + ")"; box.style.display="block"; return; } function fadein(id) { var level = 0; while(level <= 1) { setTimeout( "gradient('" + id + "'," + level + ")", (level* 1000) + 10); level += 0.01; } } // Open the lightbox function openbox(formtitle, fadin) { var box = document.getElementById('box'); document.getElementById('shadowing').style.display='block'; var btitle = document.getElementById('boxtitle'); btitle.innerHTML = formtitle; if(fadin) { gradient("box", 0); fadein("box"); } else { box.style.display='block'; } } // Close the lightbox function closebox() { document.getElementById('box').style.display='none'; document.getElementById('shadowing').style.display='none'; } //pass form fields into variables var divexugsotherugsexams1 = document.getElementById('divexugsotherugsexams1'); var exugsotherugsexams1 = document.form4.exugsotherugsexams1.value; function passform() { divexugsotherugsexams1.innerHTML = document.form4.exugsotherugsexams1.value; } The HTML(with just one text field try): <p><input name="submit4" type="submit" class="button2" id="submit4" value="Preview Note" onClick="openbox('Preview Note', 1)"/> </p> <div id="shadowing"></div> <div id="box"> <span id="boxtitle"></span> <div id="divexugsotherugsexams1"></div> <script>document.write('<PARAM name="SRC" VALUE="'+exugsotherugsexams1+'">')</script> <a href="#" onClick="closebox()">Close</a> </div>

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• All hail the Excel Queen

  - by Tim Dexter

  An excellent question this past week from dear ol Blighty; actually from Brian at Nextgen Clearing Ltd in the big smoke (London). Brian was developing an excel template and wanted to be able to reference the data fields multiple times inside the Excel template. Damn good question and I of course has some wacky solutions, from macros and cell referencing in Excel to pre-processing the data with an XSL stylesheet to copy the data multiple times so it could be referenced multiple times. All completely outlandish, enter our Queen of Excel, Shirley from the development team. Shirley is singlehandedly responsible for the Excel templates, I put her through six months of hell a few years back, with a host of Excel template requirements. She was more than up to the challenge and has developed some great features. One of those, is the ability to use the hidden XDO_METADATA sheet to map the data to custom named fields so they can be used multiple times in the template. So simple and very neat! Excel template and regular Excel users will know that you can only use the naming function once ie the names have to be unique across the workbook so you can not reuse a cell/group name. To get around this you can just come up with as many cell names as you want and map them in the XDO_METADATA sheet to the data columns/fields in your XML data set:. For example: XDO_?DEPTNO_SUMMARY?  <?DEPTNO?> XDO_?DNAME_SUMMARY?  <?DNAME?> XDO_GROUP_?G_D_DETAIL? <xsl:for-each-group select=".//G_D" group-by="./DEPTNO"> XDO_?DEPTNO_DETAIL? <?DEPTNO?> As you can see DEPTNO has been referenced twice and mapped to different named values in the left hand column. These values can then be used to name individual cells in the Excel template. You'll also notice a mix of Publisher <? ...?> and native XSL commands. So the world is your oyster on the mapping and the complexity you might need for calculations or string manipulation. Shirley has kindly built out a sample Excel template, data and result here so you can see how it all hangs together. the XDO_METADATA sheet is hidden, just right click on the sheet names and use the Unhide command to show it.

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• Uniform not being applied to proper mesh

  - by HaMMeReD

  Ok, I got some code, and you select blocks on a grid. The selection works. I can modify the blocks to be raised when selected and the correct one shows. I set a color which I use in the shader. However, I am trying to change the color before rendering the geometry, and the last rendered geometry (in the sequence) is rendered light. However, to debug logic I decided to move the block up and make it white, in which case one block moves up and another block becomes white. I checked all my logic and it knows the correct one is selected and it is showing in, in the correct place and rendering it correctly. When there is only 1 it works properly. Video Of the bug in action, note how the highlighted and elevated blocks are not the same block, however the code for color and My Renderer is here (For the items being drawn) public void render(Renderer renderer) { mGrid.render(renderer, mGameState); for (Entity e:mGameEntities) { UnitTypes ut = UnitTypes.valueOf((String)e.getObject(D.UNIT_TYPE.ordinal())); if (ut == UnitTypes.Soldier) { renderer.testShader.begin(); renderer.testShader.setUniformMatrix("u_mvpMatrix",mEntityMatrix); renderer.texture_soldier.bind(0); Vector2 pos = (Vector2) e.getObject(D.COORDS.ordinal()); mEntityMatrix.set(renderer.mCamera.combined); if (mSelectedEntities.contains(e)) { mEntityMatrix.translate(pos.x, 1f, pos.y); renderer.testShader.setUniformf("v_color", 0.5f,0.5f,0.5f,1f); } else { mEntityMatrix.translate(pos.x, 0f, pos.y); renderer.testShader.setUniformf("v_color", 1f,1f,1f,1f); } mEntityMatrix.scale(0.2f, 0.2f, 0.2f); renderer.model_soldier.render(renderer.testShader,GL20.GL_TRIANGLES); renderer.testShader.end(); } else if (ut == UnitTypes.Enemy_Infiltrator) { renderer.testShader.begin(); renderer.testShader.setUniformMatrix("u_mvpMatrix",mEntityMatrix); renderer.testShader.setUniformf("v_color", 1.0f,1,1,1.0f); renderer.texture_enemy_infiltrator.bind(0); Vector2 pos = (Vector2) e.getObject(D.COORDS.ordinal()); mEntityMatrix.set(renderer.mCamera.combined); mEntityMatrix.translate(pos.x, 0f, pos.y); mEntityMatrix.scale(0.2f, 0.2f, 0.2f); renderer.model_enemy_infiltrator.render(renderer.testShader,GL20.GL_TRIANGLES); renderer.testShader.end(); } } }

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• How to perform Cross Join with Linq

  - by berthin

  Cross join consists to perform a Cartesian product of two sets or sequences. The following example shows a simple Cartesian product of the sets A and B: A (a1, a2) B (b1, b2) => C (a1 b1,            a1 b2,            a2 b1,            a2, b2 ) is the Cartesian product's result. Linq to Sql allows using Cross join operations. Cross join is not equijoin, means that no predicate expression of equality in the Join clause of the query. To define a cross join query, you can use multiple from clauses. Note that there's no explicit operator for the cross join. In the following example, the query must join a sequence of Product with a sequence of Pricing Rules: 1: //Fill the data source 2: var products = new List<Product> 3: { 4: new Product{ProductID="P01",ProductName="Amaryl"}, 5: new Product {ProductID="P02", ProductName="acetaminophen"} 6: }; 7:  8: var pricingRules = new List<PricingRule> 9: { 10: new PricingRule {RuleID="R_1", RuleType="Free goods"}, 11: new PricingRule {RuleID="R_2", RuleType="Discount"}, 12: new PricingRule {RuleID="R_3", RuleType="Discount"} 13: }; 14: 15: //cross join query 16: var crossJoin = from p in products 17: from r in pricingRules 18: select new { ProductID = p.ProductID, RuleID = r.RuleID };   Below the definition of the two entities using in the above example.   1: public class Product 2: { 3: public string ProductID { get; set; } 4: public string ProductName { get; set; } 5: } 1: public class PricingRule 2: { 3: public string RuleID { get; set; } 4: public string RuleType { get; set; } 5: }   Doing this: 1: foreach (var result in crossJoin) 2: { 3: Console.WriteLine("({0} , {1})", result.ProductID, result.RuleID); 4: }   The output should be similar on this:   ( P01   -    R_1 )   ( P01   -    R_2 )   ( P01   -    R_3 )   ( P02   -    R_1 )   ( P02   -    R_2 )   ( P02   -    R_3) Conclusion Cross join operation is useful when performing a Cartesian product of two sequences object. However, it can produce very large result sets that may caused a problem of performance. So use with precautions :)

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• LINQ to Twitter v2.1.09 Released

  - by Joe Mayo

  Originally posted on: http://geekswithblogs.net/WinAZ/archive/2013/10/15/linq-to-twitter-v2.1.09-released.aspxToday, I released LINQ to Twitter v2.1.09. Here are important new changes. Bug Fixes This is primarily a bug fix release. Most notably, there were authentication problems in WinRT apps. This is now fixed. New Features One new feature is the addition of ApplicationOnlyAuthentication for WinRT. It is fully async.  Here’s how it works: var auth = new WinRtApplicationOnlyAuthorizer { Credentials = new InMemoryCredentials { ConsumerKey = "", ConsumerSecret = "" } }; if (auth == null || !auth.IsAuthorized) { await auth.AuthorizeAsync(); } var twitterCtx = new TwitterContext(auth); (from search in twitterCtx.Search where search.Type == SearchType.Search && search.Query == SearchTextBox.Text select search) .MaterializedAsyncCallback( async response => await Dispatcher.RunAsync( CoreDispatcherPriority.Normal, async () => { Search searchResponse = response.State.Single(); string message = string.Format( "Search returned {0} statuses", searchResponse.Statuses.Count); await new MessageDialog(message, "Search Complete").ShowAsync(); })); It’s called the WinRtApplicationOnlyAuthorizer. You only need two tokens, ConsumerKey and ConsumerSecret, which come from your Twitter API application settings page. Note: You need a Twitter Application, which you can create at https://dev.twitter.com/. The MaterializedAsyncCallback materializes your query and handles the response. I put everything together in a lambda for demonstration purposes, but you can always replace the callback with a handler of type Action<TwitterAsyncResponse<IEnumerable<T>>>, where T is Search for this example. On the Horizon The next version of LINQ to Twitter is in development. I discussed it at LINQ to Twitter Async. This isn’t complete, but you can download the source code at the LINQ to Twitter site on CodePlex. I’ve competed all the spikes for what I thought would be the hard parts and now have prototypes of queries and commands working. This would be a good time to provide feedback if there are features in the current version that you think could be improved. The current driving forces for the next version will be async and PCL.   @JoeMayo

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• Why can't I install Microsoft Office 2007 in Ubuntu 11.04?

  - by DK new

  I am very new to Ubuntu and only just getting a hang of it, and my questions might sound stupid especially because I am a learner in terms of techie things as well. So because of the nature of work where everyone uses stupid Windows and Microsoft, I need to have access to MS Office 2007/2010 as documents with too many tables or images open all haywire in Libre Office (which has otherwise been great!). I have been reading up about installing MS Office through WINE/PlayonLinux, but have been unsuccessful so far. I downloaded a MS Office 2007 package from Pirate Bay, which I extracted into a folder. I tried numerous different ways to install through WINE and PlayonLinux, but will discuss the one which seems to be getting me somewhere. http://www.webupd8.org/2011/01/how-to-install-microsoft-office-2007-in.html ..... Initially, when I would click on the install button of MS Office, I get a message saying "The install location you selected does not have 1558MB free space. Free up space from the selected install location or choose a different install location". The install location in this case said "C:\Program Files\Microsoft Office", which confused me as I don't have drives named as C, Z etc. I went to configure WINE and under the drives tab, created a drive named A with the path location /media/cd025f16-433b-4a90-abb6-bb7a025d0450/. Also the space thing is confusing as I have at least 450GB of unused space on my computer. anyways, when I selected the A drive for installation, the installation starts, but soon I get the following error message, "Office cannot find Office.en-us\OfficeLR.Cab. Browse to a valid installation source" .... The part saying "OfficeLR.Cab" have said different things after the Office bit every time I have made an attempt. When I select the Office.en-us sub-folder or any other folder within the folder where MS Office 2007 is saved, it says "invalid source"! I have been trying to get this sorted since 15hrs now (addictive!) and have learnt loads of things in the process, but have not managed to crack it. It might be something stupidly simple I am not aware off that is stopping it. I would really appreciate some help! Thanks a lot.. Also I am still getting used to the language, so might have many questions Also I am using Ubuntu 11.04 (tag 11.04). Also I think I don't have windows -- when my friend installed Ubuntu on my new laptop which had Windows 7, he was trying to keep windows in a separate partition, but something happened and windows was not there! Looking forward to some support! Again thanks a lot

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• June 2013 release of SSDT contains a minor bug that you should be aware of

  - by jamiet

  I have discovered what seems, to me, like a bug in the June 2013 release of SSDT and given the problems that it created yesterday on my current gig I thought it prudent to write this blog post to inform people of it. I’ve built a very simple SSDT project to reproduce the problem that has just two tables, [Table1] and [Table2], and also a procedure [Procedure1]: The two tables have exactly the same definition, both a have a single column called [Id] of type integer. CREATE TABLE [dbo].[Table1] (     [Id] INT NOT NULL PRIMARY KEY ) My stored procedure simply joins the two together, orders them by the column used in the join predicate, and returns the results: CREATE PROCEDURE [dbo].[Procedure1] AS     SELECT t1.*     FROM    Table1 t1     INNER JOIN Table2 t2         ON    t1.Id = t2.Id     ORDER BY Id Now if I create those three objects manually and then execute the stored procedure, it works fine: So we know that the code works. Unfortunately, SSDT thinks that there is an error here: The text of that error is: Procedure: [dbo].[Procedure1] contains an unresolved reference to an object. Either the object does not exist or the reference is ambiguous because it could refer to any of the following objects: [dbo].[Table1].[Id] or [dbo].[Table2].[Id]. Its complaining that the [Id] field in the ORDER BY clause is ambiguous. Now you may well be thinking at this point “OK, just stick a table alias into the ORDER BY predicate and everything will be fine!” Well that’s true, but there’s a bigger problem here. One of the developers at my current client installed this drop of SSDT and all of a sudden all the builds started failing on his machine – he had errors left right and centre because, as it transpires, we have a fair bit of code that exhibits this scenario.  Worse, previous installations of SSDT do not flag this code as erroneous and therein lies the rub. We immediately had a mass panic where we had to run around the department to our developers (of which there are many) ensuring that none of them should upgrade their SSDT installation if they wanted to carry on being productive for the rest of the day. Also bear in mind that as soon as a new drop of SSDT comes out then the previous version is instantly unavailable so rolling back is going to be impossible unless you have created an administrative install of SSDT for that previous version. Just thought you should know! In the grand schema of things this isn’t a big deal as the bug can be worked around with a simple code modification but forewarned is forearmed so they say! Last thing to say, if you want to know which version of SSDT you are running check my blog post Which version of SSDT Database Projects do I have installed? @Jamiet

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