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• Zend - unable to catch exception [closed]

  - by coder3

  This still throw an uncaught exception.. Any insight why this isn't working? protected function login() { $cart = $this->getHelper('GetCurrentCart'); $returnValue = false; if ($this->view->form->isValid($this->_getAllParams())) { $values = $this->view->form->getValues(); try { $this->goreg = $this->goregFactory->create($this->config->goreg->service_url); if ($this->goreg->login($values['username'], $values['password']) && $this->goregSession->isLoggedIn()) { $returnValue = true; } else { echo 'success 1'; } } catch (Exception $e) { echo 'error 1'; } catch (Zend_Exception $e) { echo 'error 2'; } catch (Zend_Http_Client_Exception $e) { echo 'error 3'; } } return $returnValue; }

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• Timeout Considerations for Solicit Response – Part 2

  - by Michael Stephenson

  To follow up a previous article about timeouts and how they can affect your application I have extended the sample we were using to include WCF. I will execute some test scenarios and discuss the results. The sample We begin by consuming exactly the same web service which is sitting on a remote server. This time I have created a .net 3.5 application which will consume the web service using the basichttp binding. To show you the configuration for the consumption of this web service please refer to the below diagram. You can see like before we also have the connectionManagement element in the configuration file. I have added a WCF service reference (also using the asynchronous proxy methods) and have the below code sample in the application which will asynchronously make the web service calls and handle the responses on a call back method invoked by a delegate. If you have read the previous article you will notice that the code is almost the same.   Sample 1 – WCF with Default Timeouts In this test I set about recreating the same scenario as previous where we would run the test but this time using WCF as the messaging component. For the first test I would use the default configuration settings which WCF had setup when we added a reference to the web service. The timeout values for this test are: closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"   The Test We simulated 21 calls to the web service Test Results The client-side trace is as follows:   The server-side trace is as follows: Some observations on the results are as follows: The timeouts happened quicker than in the previous tests because some calls were timing out before they attempted to connect to the server The first few calls that timed out did actually connect to the server and did execute successfully on the server   Test 2 – Increase Open Connection Timeout & Send Timeout In this test I wanted to increase both the send and open timeout values to try and give everything a chance to go through. The timeout values for this test are: closeTimeout="00:01:00" openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:10:00"   The Test We simulated 21 calls to the web service   Test Results The client side trace for this test was   The server-side trace for this test was: Some observations on this test are: This test proved if the timeouts are high enough everything will just go through   Test 3 – Increase just the Send Timeout In this test we wanted to increase just the send timeout. The timeout values for this test are: closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:10:00"   The Test We simulated 21 calls to the web service   Test Results The below is the client side trace The below is the server side trace Some observations on this test are: In this test from both the client and server perspective everything ran through fine The open connection timeout did not seem to have any effect   Test 4 – Increase Just the Open Connection Timeout In this test I wanted to validate the change to the open connection setting by increasing just this on its own. The timeout values for this test are: closeTimeout="00:01:00" openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"   The Test We simulated 21 calls to the web service Test Results The client side trace was The server side trace was Some observations on this test are: In this test you can see that the open connection which relates to opening the channel timeout increase was not the thing which stopped the calls timing out It's the send of data which is timing out On the server you can see that the successful few calls were fine but there were also a few calls which hit the server but timed out on the client You can see that not all calls hit the server which was one of the problems with the WSE and ASMX options   Test 5 – Smaller Increase in Send Timeout In this test I wanted to make a smaller increase to the send timeout than previous just to prove that it was the key setting which was controlling what was timing out. The timeout values for this test are: openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:02:30"   The Test We simulated 21 calls to the web service Test Results The client side trace was   The server side trace was Some observations on this test are: You can see that most of the calls got through fine On the client you can see that call 20 timed out but still hit the server and executed fine.   Summary At this point between the two articles we have quite a lot of scenarios showing the different way the timeout setting have played into our original performance issue, and now we can see how WCF could offer an improved way to handle the problem. To summarise the differences in the timeout properties for the three technology stacks: ASMX The timeout value only applies to the execution time of your request on the server. The timeout does not consider how long your code might be waiting client side to get a connection. WSE The timeout value includes both the time to obtain a connection and also the time to execute the request. A timeout will not be thrown as an error until an attempt to connect to the server is made. This means a 40 second timeout setting may not throw the error until 60 seconds when the connection to the server is made. If the connection to the server is made you should be aware that your message will be processed and you should design for this. WCF The WCF send timeout is the setting most equivalent to the settings we were looking at previously. Like WSE this setting the counter includes the time to get a connection as well as the time to execute on a server. Unlike WSE and ASMX an error will be thrown as soon as the send timeout from making your call from user code has elapsed regardless of whether we are waiting for a connection or have an open connection to the server. This may to a user appear to have better latency in getting an error response compared to WSE or ASMX.

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• Getting started with Oracle Database In-Memory Part III - Querying The IM Column Store

  - by Maria Colgan

  In my previous blog posts, I described how to install, enable, and populate the In-Memory column store (IM column store). This weeks post focuses on how data is accessed within the IM column store. Let’s take a simple query “What is the most expensive air-mail order we have received to date?” SELECT Max(lo_ordtotalprice) most_expensive_order FROM lineorderWHERE  lo_shipmode = 5; The LINEORDER table has been populated into the IM column store and since we have no alternative access paths (indexes or views) the execution plan for this query is a full table scan of the LINEORDER table. You will notice that the execution plan has a new set of keywords “IN MEMORY" in the access method description in the Operation column. These keywords indicate that the LINEORDER table has been marked for INMEMORY and we may use the IM column store in this query. What do I mean by “may use”? There are a small number of cases were we won’t use the IM column store even though the object has been marked INMEMORY. This is similar to how the keyword STORAGE is used on Exadata environments. You can confirm that the IM column store was actually used by examining the session level statistics, but more on that later. For now let's focus on how the data is accessed in the IM column store and why it’s faster to access the data in the new column format, for analytical queries, rather than the buffer cache. There are four main reasons why accessing the data in the IM column store is more efficient. 1. Access only the column data needed The IM column store only has to scan two columns – lo_shipmode and lo_ordtotalprice – to execute this query while the traditional row store or buffer cache has to scan all of the columns in each row of the LINEORDER table until it reaches both the lo_shipmode and the lo_ordtotalprice column. 2. Scan and filter data in it's compressed format When data is populated into the IM column it is automatically compressed using a new set of compression algorithms that allow WHERE clause predicates to be applied against the compressed formats. This means the volume of data scanned in the IM column store for our query will be far less than the same query in the buffer cache where it will scan the data in its uncompressed form, which could be 20X larger. 3. Prune out any unnecessary data within each column The fastest read you can execute is the read you don’t do. In the IM column store a further reduction in the amount of data accessed is possible due to the In-Memory Storage Indexes(IM storage indexes) that are automatically created and maintained on each of the columns in the IM column store. IM storage indexes allow data pruning to occur based on the filter predicates supplied in a SQL statement. An IM storage index keeps track of minimum and maximum values for each column in each of the In-Memory Compression Unit (IMCU). In our query the WHERE clause predicate is on the lo_shipmode column. The IM storage index on the lo_shipdate column is examined to determine if our specified column value 5 exist in any IMCU by comparing the value 5 to the minimum and maximum values maintained in the Storage Index. If the value 5 is outside the minimum and maximum range for an IMCU, the scan of that IMCU is avoided. For the IMCUs where the value 5 does fall within the min, max range, an additional level of data pruning is possible via the metadata dictionary created when dictionary-based compression is used on IMCU. The dictionary contains a list of the unique column values within the IMCU. Since we have an equality predicate we can easily determine if 5 is one of the distinct column values or not. The combination of the IM storage index and dictionary based pruning, enables us to only scan the necessary IMCUs. 4. Use SIMD to apply filter predicates For the IMCU that need to be scanned Oracle takes advantage of SIMD vector processing (Single Instruction processing Multiple Data values). Instead of evaluating each entry in the column one at a time, SIMD vector processing allows a set of column values to be evaluated together in a single CPU instruction. The column format used in the IM column store has been specifically designed to maximize the number of column entries that can be loaded into the vector registers on the CPU and evaluated in a single CPU instruction. SIMD vector processing enables the Oracle Database In-Memory to scan billion of rows per second per core versus the millions of rows per second per core scan rate that can be achieved in the buffer cache. I mentioned earlier in this post that in order to confirm the IM column store was used; we need to examine the session level statistics. You can monitor the session level statistics by querying the performance views v$mystat and v$statname. All of the statistics related to the In-Memory Column Store begin with IM. You can see the full list of these statistics by typing: display_name format a30 SELECT display_name FROM v$statname WHERE  display_name LIKE 'IM%'; If we check the session statistics after we execute our query the results would be as follow; SELECT Max(lo_ordtotalprice) most_expensive_order FROM lineorderWHERE lo_shipmode = 5; SELECT display_name FROM v$statname WHERE  display_name IN ('IM scan CUs columns accessed',                        'IM scan segments minmax eligible',                        'IM scan CUs pruned'); As you can see, only 2 IMCUs were accessed during the scan as the majority of the IMCUs (44) in the LINEORDER table were pruned out thanks to the storage index on the lo_shipmode column. In next weeks post I will describe how you can control which queries use the IM column store and which don't. +Maria Colgan

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• What's the better user experience: Waiting once at startup for a long time or waiting frequently for a short time?

  - by Roflcoptr

  I'm currently design an application that involves a lot of calculation. Now I have generally two possibilities which I have both tested: 1) During startup of the application I calculated only the most important values and these values that consume a lot of time. So the user has to wait approximately 15 seconds during startup. But on the other hand a lot of user interactions require recalculation so that the user often has to wait 2-3 seconds after clicking somewhere until the application has calculated and loaded all values 2) I load everything during startup. This takes from 90 to 120 seconds... This is quite a long time, but the big advantage is that all the user interactions are executed immediately. So what would you generally consider the better approach? Loading all time-consuming operations during startup or when needed?

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• Integrating Windows Form Click Once Application into SharePoint 2007 &ndash; Part 2 of 4

  - by Kelly Jones

  In my last post, I explained why we decided to use a Click Once application to solve our business problem. To quickly review, we needed a way for our business users to upload documents to a SharePoint 2007 document library in mass, set the meta data, set the permissions per document, and to do so easily. Let’s look at the pieces that make up our solution.  First, we have the Windows Form application.  This app is deployed using Click Once and calls SharePoint web services in order to upload files and then calls web services to set the meta data (SharePoint columns and permissions).  Second, we have a custom action.  The custom action is responsible for providing our users a link that will launch the Windows app, as well as passing values to it via the query string.  And lastly, we have the web services that the Windows Form application calls.  For our solution, we used both out of the box web services and a custom web service in order to set the column values in the document library as well as the permissions on the documents. Now, let’s look at the technical details of each of these pieces.  (All of the code is downloadable from here: )   Windows Form application deployed via Click Once The Windows Form application, called “Custom Upload”, has just a few classes in it: Custom Upload -- the form FileList.xsd -- the dataset used to track the names of the files and their meta data values SharePointUpload -- this class handles uploading the file SharePointUpload uses an HttpWebRequest to transfer the file to the web server. We had to change this code from a WebClient object to the HttpWebRequest object, because we needed to be able to set the time out value.  public bool UploadDocument(string localFilename, string remoteFilename) { bool result = true; //Need to use an HttpWebRequest object instead of a WebClient object // so we can set the timeout (WebClient doesn't allow you to set the timeout!) HttpWebRequest req = (HttpWebRequest)WebRequest.Create(remoteFilename); try { req.Method = "PUT"; req.Timeout = 60 * 1000; //convert seconds to milliseconds req.AllowWriteStreamBuffering = true; req.Credentials = System.Net.CredentialCache.DefaultCredentials; req.SendChunked = false; req.KeepAlive = true; Stream reqStream = req.GetRequestStream(); FileStream rdr = new FileStream(localFilename, FileMode.Open, FileAccess.Read); byte[] inData = new byte[4096]; int bytesRead = rdr.Read(inData, 0, inData.Length); while (bytesRead > 0) { reqStream.Write(inData, 0, bytesRead); bytesRead = rdr.Read(inData, 0, inData.Length); } reqStream.Close(); rdr.Close(); System.Net.HttpWebResponse response = (HttpWebResponse)req.GetResponse(); if (response.StatusCode != HttpStatusCode.OK && response.StatusCode != HttpStatusCode.Created) { String msg = String.Format("An error occurred while uploading this file: {0}\n\nError response code: {1}", System.IO.Path.GetFileName(localFilename), response.StatusCode.ToString()); LogWarning(msg, "2ACFFCCA-59BA-40c8-A9AB-05FA3331D223"); result = false; } } catch (Exception ex) { LogException(ex, "{E9D62A93-D298-470d-A6BA-19AAB237978A}"); result = false; } return result; } The class also contains the LogException() and LogWarning() methods. When the application is launched, it parses the query string for some initial values.  The query string looks like this: string queryString = "Srv=clickonce&Sec=N&Doc=DMI&SiteName=&Speed=128000&Max=50"; This Srv is the path to the server (my Virtual Machine is name “clickonce”), the Sec is short for security – meaning HTTPS or HTTP, the Doc is the shortcut for which document library to use, and SiteName is the name of the SharePoint site.  Speed is used to calculate an estimate for download speed for each file.  We added this so our users uploading documents would realize how long it might take for clients in remote locations (using slow WAN connections) to download the documents. The last value, Max, is the maximum size that the SharePoint site will allow documents to be.  This allowed us to give users a warning that a file is too large before we even attempt to upload it. Another critical piece is the meta data collection.  We organized our site using SharePoint content types, so when the app loads, it gets a list of the document library’s content types.  The user then select one of the content types from the drop down list, and then we query SharePoint to get a list of the fields that make up that content type.  We used both an out of the box web service, and one that we custom built, in order to get these values. Once we have the content type fields, we then add controls to the form.  Which type of control we add depends on the data type of the field.  (DateTime pickers for date/time fields, etc)  We didn’t write code to cover every data type, since we were working with a limited set of content types and field data types. Here’s a screen shot of the Form, before and after someone has selected the content types and our code has added the custom controls:     The other piece of meta data we collect is the in the upper right corner of the app, “Users with access”.  This box lists the different SharePoint Groups that we have set up and by checking the boxes, the user can set the permissions on the uploaded documents. All of this meta data is collected and submitted to our custom web service, which then sets the values on the documents on the list.  We’ll look at these web services in a future post. In the next post, we’ll walk through the Custom Action we built.

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• How web server choose between unicode and utf-8 for accentued characters?

  - by jacques

  I have a web server with my ISP which replaces in the urls the accentued characters by their unicode values: for instance é (eacute) is translated to %e9 (dec 233). For testing I use locally Easyphp which translate those characters by their utf-8 equivalence: é is then replaced by the well known sequence %c3%a9 (é)... Browsers served by Easyphp don't decode unicode values but they do if running locally (utf-8 and non converted accent also)... I have been unable to find where this behavior is configured in the server. This is a problem as some urls are built by my application using the php rawurlencode() which seems to always encode with unicode values on both servers. Any idea? Thanks in advance.

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• How does the web server choose between unicode and utf-8 for accented characters?

  - by jacques

  I have a web server with my ISP which replaces accented characters in URLs with their unicode values: for instance é (eacute) is translated to %e9 (dec 233). For testing locally I use EasyPHP which translates those characters by their utf-8 equivalence: é is then replaced by the well known sequence %c3%a9 (é)... Browsers served by EasyPHP don't decode unicode values but they do if running locally (utf-8 and non converted accent also)... I have been unable to find where this behavior is configured in the server. This is a problem as some urls are built by my application using the php rawurlencode() which seems to always encode with unicode values on both servers. Any idea?

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• Evaluating mean and std as simulations are added

  - by Luca Cerone

  I have simulations that evaluate a certain value X. I run the simulations several times and save the value of X in a vector V. When all the runs have finished I evaluate the mean and standard deviation for the vector V. This approach works, but implies saving all the values for X. As my computer is quite old and with limited ram, I was wondering if there is a way to update the mean value M and the standard deviation S, knowing the value of X at the (n+1)-th run, and the values of M and S after n runs. How can I update the mean value and the standard deviation as simulations are added to the set? Please note that this is just a conceptual example, I don't save only one number X but thousands at each simulations, so I really have problems running a big number of runs if I have to keep all the past values into the memory.

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• Nicest way to map rgb colors from html to led

  - by back_ache

  I have attached an rgb led to a color picker on a webpage and have hit the obvious problem that though the led is 8-bit like html the color rendition is very different so with the more subtle shades the led values for the color are wildly different to the html values. The brute-force method would be for me to have a lookup-table on the webserver to map the two sets of values but would ideally like to do it more elegantly Before I start listing all my 101 ideas for doing this I wondered if anyone else had come across the issue, the end-game would be to be able to abstract the color-rendition of different leds and make it available as a webservice (html value and device id in, led value out)

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• Strategies to Defeat Memory Editors for Cheating - Desktop Games

  - by ashes999

  I'm assuming we're talking about desktop games -- something the player downloads and runs on their local computer. Many are the memory editors that allow you to detect and freeze values, like your player's health. How do you prevent cheating? What strategies are effective to combat this kind of cheating? I'm looking for some good ones. Two I use that are mediocre are: Displaying values as a percentage instead of the number (eg. 46/50 = 92% health) A low-level class that holds values in an array and moves them with each change

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• How to use the float value from Noise function in voxel terrain?

  - by therealjohn

  Im using Unity, although this question is not really specific to that engine. Im also using an asset from the store called Coherent Noise. It has some neat noise functionality built it. I am using those functions to produce some noise values. I am getting a value between 0 and 1 (floats). I have an array of blocks (for minecraft like voxel terrain) and I am confused on how to use this float value for terrain? Do I do something like <= 0 == Solid block etc etc? I am confused on how to use the floating values that the noise functions produce to use for height values of an array of say a height of 16. Thanks for any guidance.

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• Using PHP Redirect Script together with Custom Fields (WordPress)? [on hold]

  - by Alex Scherer

  I am currently trying to make yoast's link cloaking script ( Yoast.com script manual // Github Script files ) work together with the Wordpress plugin Advanced Custom Fields. The script fetches 2 values (redirect id, redirect url) via GET and then redirects to this particular URL which is defined in a .txt file called redirects.txt I would like to change the script, so that I can define both the id and redirection URL via custom fields on each post in my WP dashboard.. I would be really happy if someone could help me to code something that does the same as the script above but without using a redirects.txt file to save the values but furthermore gets those values from custom fields. Best regards ! Alex

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• What is a good way to keep track of strings for dictionary lookups?

  - by Justin

  I am working through the Windows 8 app tutorial. They have some code about saving app data like so: private void NameInput_TextChanged(object sender, TextChangedEventArgs e) { Windows.Storage.ApplicationDataContainer roamingSettings = Windows.Storage.ApplicationData.Current.RoamingSettings; roamingSettings.Values["userName"] = nameInput.Text; } I have worked with C# in the past and found that things like using constant string values (like "userName" in this case) for keys could get messy because auto-complete did not work and it was easy to forget if I had made an entry for a setting before and what it was called. So if I don't touch code for awhile I end up accidentally creating multiple entries for the same value that are named slightly differently. Surely there is a better way to keep track of the strings that key to those values. What is a good solution to this problem?

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• SSRS 2008 R2 KPIs with bullet graphs

  Key Performance Indicators are typically displayed in a scorecard with stop light indicators, which are either red, amber or green light icons. The limitation for these kind of indicators is that you can see the actual and target values in two different fields as well as see the status of the KPI in red, amber or green color. If the user wants to figure out the thresholds associated with the KPI, these values are generally not visible. Further, representing the threshold values in the scorecard itself defeats the purpose of the scorecard. The scorecard should display the KPI's status in the most summarized form and use a minimal amount of space on the dashboard. In this tip we would look at how to address this issue.

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• Intro to Sessions in ASP.Net

  Sessions are used to pass the value from one page to another with no effort from the user. With a session, if the user inputs values on the original page and you need to access them on another page, you can retrieve the values stored in the session without making the user submit those values again. Sessions are important to any user-related authentication (if you're using the https protocol), user-related validation and customization of visitor experiences in your website. This tutorial will use Visual Basic to illustrate ASP.NET sessions, though the code can be converted to equivalent C# code...

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• Cannot save all of the property settings for this Web Part.

  - by ybbest

  I would like to display all the items of custom content type of Animals in a SharePoint content query WebPart. After choosing the appropriate values in the web part editor and click on Save I got this error: Cannot save all of the property settings for this Web Part. There is a problem with one or more of the field values below. But when I examine all the values below , it does not flag any error information. I finally manage to locate the error flag after I expand the presentation section. I then delete the text in the Link textbox , now I can save the settings. However , I think the error message should have been more specific so that users can quickly locate the error. The worst part for this is that I did not even change anything in the presentation section, I merely configure the Source in the Query section. Well, I guess I am still new to SharePoint, I just have to get used to these generic error message ):

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• ASP.NET Pivot Grid Control Supports New Layout - v2010 vol 1

  The ASPxPivotGrid will now support a slick new feature that will help save you screen space: Compact Layout for Hierarchical Row Values With DXperience v2010 vol 1, you can create compact layouts for hierarchical pivot table row values (this capability is also available in the WinForms and WPF versions of this control). The compact layout allows you get more space horizontally without sacrificing the distinction between the hierarchical row values: DXperience? What's That? DXperience is the...Did 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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• Using PhysX, how can I predict where I will need to generate procedural terrain collision shapes?

  - by Sion Sheevok

  In this situation, I have terrain height values I generate procedurally. For rendering, I use the camera's position to generate an appropriate sized height map. For collision, however, I need to have height fields generated in areas where objects may intersect. My current potential solution, which may be naive, is to iterate over all "awake" physics actors, use their bounds/extents and velocities to generate spheres in which they may reside after a physics update, then generate height values for ranges encompassing clustered groups of actors. Much of that data is likely already calculated by PhysX already, however. Is there some API, maybe a set of queries, even callbacks from the spatial system, that I could use to predict where terrain height values will be needed?

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• If I have true i/o false or vice versa, is it an OBOE?

  - by Protector one

  I often make the mistake of inverting my truth values in my code (e.g. in my if clauses). It gives me the same feeling as when making an OBOE (Off By One Error), even though it's technically not. Would you call it an OBOE, or better yet, is there a specific term for "off by truth value"-errors? My reasoning is that all possible values of a boolean are true and false. In other words, the possible values are contained in the array: [true, false]. If you access this array by index, you'll always be off by one… when selecting the wrong one. This becomes especially obvious when you calculate your index as: index = someInt % 2. Now I understand that this usually not the case, but in my mind, it always feels like this. Almost got it, just off by one…

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• DIV is picking max-width value as width value for DIV.

  - by Lokesh

  I am facing a problem after applying max-width hack for IE7. In mozilla, width of the div is flexible and adjustable as per the image width in the div. But in IE7 it is taking the max-width as width of DIV. Below is my HTML code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <link rel="stylesheet" type="text/css" media="all" href="style/food.css" /> <!--[if IE 7]> <link rel="stylesheet" type="text/css" media="screen" href="style/ie7.css" /> <![endif]--> </head> <body> <div class="main_content_inner_ko"> <div class="product_item"> <img src="images/product_icons/BigNTasty.png" alt="Big N&rsquo; Tasty"/><div class="small_title">Big N&rsquo; Tasty</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_images/x115/chicken/PremCrispyChickenRanchBLT.png" height="115" width="115" alt="Premium Cripsy Chicken Ranch BLT"/><div class="small_title">Premium Cripsy Chicken Ranch BLT</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_images/x115/sandwiches/FiletOFish.png" height="115" width="99" alt="Filet O Fish"/> <div class="small_title">Filet O Fish</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_icons/BigNTasty.png" height="115" width="99" alt="Big N&rsquo; Tasty"/> <div class="small_title">Big N&rsquo; Tasty</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_images/x115/chicken/PremCrispyChickenRanchBLT.png" height="115" width="115" alt="Premium Cripsy Chicken Ranch BLT"/> <div class="small_title">Premium Cripsy Chicken Ranch BLT</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_images/x115/sandwiches/FiletOFish.png" height="115" width="99" alt="Filet O Fish"/> <div class="small_title">Filet O Fish</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_icons/BigNTasty.png" height="115" width="99" alt="Big N&rsquo; Tasty"/> <div class="small_title">Big N&rsquo; Tasty</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_icons/BigNTasty.png" height="115" width="99" alt="Big N&rsquo; Tasty"/> <div class="small_title">Big N&rsquo; Tasty</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_images/x115/sandwiches/FiletOFish.png" height="115" width="99" alt="Filet O Fish"/> <div class="small_title">Filet O Fish</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_icons/BigNTasty.png" height="115" width="99" alt="Big N&rsquo; Tasty"/> <div class="small_title">Big N&rsquo; Tasty</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_icons/BigNTasty.png" height="115" width="99" alt="Big N&rsquo; Tasty"/> <div class="small_title">Big N&rsquo; Tasty</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_icons/BigNTasty.png" height="115" width="99" alt="Big N&rsquo; Tasty"/> <div class="small_title">Big N&rsquo; Tasty</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_images/x115/chicken/PremCrispyChickenRanchBLT.png" height="115" width="115" alt="Premium Cripsy Chicken Ranch BLT"/> <div class="small_title">Premium Cripsy Chicken Ranch BLT</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_images/x115/sandwiches/FiletOFish.png" height="115" width="99" alt="Filet O Fish"/> <div class="small_title">Filet O Fish</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="product_item"> <img src="images/product_icons/BigNTasty.png" height="115" width="99" alt="Big N&rsquo; Tasty"/> <div class="small_title">Big N&rsquo; Tasty</div> <table class="product_information" cellpadding="0" border="0" cellspacing="0"> <tbody> <tr> <td class="red_bold"></td> <td></td> <td class="small_italic">(Daily Value)</td> </tr> <tr> <td class="red_bold">Calories</td> <td>460</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Total Fat</td> <td>24g</td> <td class="small_italic">(37%)</td> </tr> <tr> <td class="red_bold">Carbs</td> <td>37g</td> <td class="small_italic">(12%)</td> </tr> <tr> <td class="red_bold">Protein</td> <td>24g</td> <td class="small_italic"></td> </tr> <tr> <td class="red_bold">Sodium</td> <td>720mg</td> <td class="small_italic">(30%)</td> </tr> <tr> <td colspan="3" class="notes">Note: Values shown are for the default size and/or flavor.</td> </tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_learn_more_and_customize"></a></td></tr> <tr><td colspan="3"><a href="#" class="acts_as_button en_add_to_my_meal_builder"></a></td></tr> </tbody> </table> </div> <div class="clear"></div> </div> </body> Below is the css code: div.small_title { font-size: 10px; color: #929292; text-align: center; max-width: 115px; line-height: 13px; padding-top: 5px; margin: 0 auto; } .product_item { position: relative; float:left; min-width: 35px; max-width: 189px; width: auto !important; text-align:center; border: 1px solid #CCC; } Please help me! Cheers!! Lokesh Yadav

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• When to Store Temporary Values in Hidden Field vs. Session vs. Database?

  - by viatropos

  I am trying to build a simple OpenID login panel similar to how Stack Overflow's works. The goal is: User clicks OpenID/Oauth provider OpenID/Oauth stuff happens, we end up with the result (already made that) Then we want to confirm that the user wants to actually create a new account (vs. associating account with another OpenID account). In StackOverflow, they keep a hidden field on a form that looks like this: <form action="/users/openidconfirm" method="post"> <p>This is an OpenID we haven't seen on Stack Overflow before:</p> <p class="openid-identifier">https://me.yahoo.com/a/some-hash</p> <p>Do you want to associate this OpenID with your Stack Overflow account?</p> <div> <input type="hidden" name="fkey" value="9792ab2zza1q2a4ac414casdfa137eafba7"> <input type="hidden" name="s" value="c1a3q133-11fa-49r0-a7bz-da19849383218"> <input type="submit" value="Associate OpenID"> <input type="button" value="Cancel" onclick="window.location.href = 'http://stackoverflow.com/users/169992/viatropos?s=c1a3q133-11fa-49r0-a7bz-da19849383218'"> </div> </form> Initial question is, what are those hashes fkey and s? Not that I really care what these specific hashes are, but what it seems like is happening is they have processed the openid response and saved it to the DB in a temporary object or something, and from there they generate these keys, because they don't look like Oauth keys to me. Main situation is: after I have processed OpenID/Oauth responses, I don't yet want to create a new user/account until the user submits the "confirm" form. Should I store the keys and tokens temporarily in a "Confirm" form like this? Or is there a better way? It seems that using a temp database object would be a lot of work to manage properly. Thanks for the help. Lance

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• i need to send a group of values which i get in a loop of a function in jsp to a jsp . how can i se

  - by shyamnatte

  plz answer my question, iam trying for it frm a long time

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• I need to create a very large array of bits/boolean values. How would I do this in C/C++?

  - by Eddy

  Is it even possible to create an array of bits with more than 100000000 elements? If it is, how would I go about doing this? I know that for a char array I can do this: char* array; array = (char*)malloc(100000000 * sizeof(char)); If I was to declare the array by char array[100000000] then I would get a segmentation fault, since the maximum number of elements has been exceeded, which is why I use malloc. Is there something similar I can do for an array of bits?

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• Differences Between NHibernate and Entity Framework

  - by Ricardo Peres

  Introduction NHibernate and Entity Framework are two of the most popular O/RM frameworks on the .NET world. Although they share some functionality, there are some aspects on which they are quite different. This post will describe this differences and will hopefully help you get started with the one you know less. Mind you, this is a personal selection of features to compare, it is by no way an exhaustive list. History First, a bit of history. NHibernate is an open-source project that was first ported from Java’s venerable Hibernate framework, one of the first O/RM frameworks, but nowadays it is not tied to it, for example, it has .NET specific features, and has evolved in different ways from those of its Java counterpart. Current version is 3.3, with 3.4 on the horizon. It currently targets .NET 3.5, but can be used as well in .NET 4, it only makes no use of any of its specific functionality. You can find its home page at NHForge. Entity Framework 1 came out with .NET 3.5 and is now on its second major version, despite being version 4. Code First sits on top of it and but came separately and will also continue to be released out of line with major .NET distributions. It is currently on version 4.3.1 and version 5 will be released together with .NET Framework 4.5. All versions will target the current version of .NET, at the time of their release. Its home location is located at MSDN. Architecture In NHibernate, there is a separation between the Unit of Work and the configuration and model instances. You start off by creating a Configuration object, where you specify all global NHibernate settings such as the database and dialect to use, the batch sizes, the mappings, etc, then you build an ISessionFactory from it. The ISessionFactory holds model and metadata that is tied to a particular database and to the settings that came from the Configuration object, and, there will typically be only one instance of each in a process. Finally, you create instances of ISession from the ISessionFactory, which is the NHibernate representation of the Unit of Work and Identity Map. This is a lightweight object, it basically opens and closes a database connection as required and keeps track of the entities associated with it. ISession objects are cheap to create and dispose, because all of the model complexity is stored in the ISessionFactory and Configuration objects. As for Entity Framework, the ObjectContext/DbContext holds the configuration, model and acts as the Unit of Work, holding references to all of the known entity instances. This class is therefore not lightweight as its NHibernate counterpart and it is not uncommon to see examples where an instance is cached on a field. Mappings Both NHibernate and Entity Framework (Code First) support the use of POCOs to represent entities, no base classes are required (or even possible, in the case of NHibernate). As for mapping to and from the database, NHibernate supports three types of mappings: XML-based, which have the advantage of not tying the entity classes to a particular O/RM; the XML files can be deployed as files on the file system or as embedded resources in an assembly; Attribute-based, for keeping both the entities and database details on the same place at the expense of polluting the entity classes with NHibernate-specific attributes; Strongly-typed code-based, which allows dynamic creation of the model and strongly typing it, so that if, for example, a property name changes, the mapping will also be updated. Entity Framework can use: Attribute-based (although attributes cannot express all of the available possibilities – for example, cascading); Strongly-typed code mappings. Database Support With NHibernate you can use mostly any database you want, including: SQL Server; SQL Server Compact; SQL Server Azure; Oracle; DB2; PostgreSQL; MySQL; Sybase Adaptive Server/SQL Anywhere; Firebird; SQLLite; Informix; Any through OLE DB; Any through ODBC. Out of the box, Entity Framework only supports SQL Server, but a number of providers exist, both free and commercial, for some of the most used databases, such as Oracle and MySQL. See a list here. Inheritance Strategies Both NHibernate and Entity Framework support the three canonical inheritance strategies: Table Per Type Hierarchy (Single Table Inheritance), Table Per Type (Class Table Inheritance) and Table Per Concrete Type (Concrete Table Inheritance). Associations Regarding associations, both support one to one, one to many and many to many. However, NHibernate offers far more collection types: Bags of entities or values: unordered, possibly with duplicates; Lists of entities or values: ordered, indexed by a number column; Maps of entities or values: indexed by either an entity or any value; Sets of entities or values: unordered, no duplicates; Arrays of entities or values: indexed, immutable. Querying NHibernate exposes several querying APIs: LINQ is probably the most used nowadays, and really does not need to be introduced; Hibernate Query Language (HQL) is a database-agnostic, object-oriented SQL-alike language that exists since NHibernate’s creation and still offers the most advanced querying possibilities; well suited for dynamic queries, even if using string concatenation; Criteria API is an implementation of the Query Object pattern where you create a semi-abstract conceptual representation of the query you wish to execute by means of a class model; also a good choice for dynamic querying; Query Over offers a similar API to Criteria, but using strongly-typed LINQ expressions instead of strings; for this, although more refactor-friendlier that Criteria, it is also less suited for dynamic queries; SQL, including stored procedures, can also be used; Integration with Lucene.NET indexer is available. As for Entity Framework: LINQ to Entities is fully supported, and its implementation is considered very complete; it is the API of choice for most developers; Entity-SQL, HQL’s counterpart, is also an object-oriented, database-independent querying language that can be used for dynamic queries; SQL, of course, is also supported. Caching Both NHibernate and Entity Framework, of course, feature first-level cache. NHibernate also supports a second-level cache, that can be used among multiple ISessionFactorys, even in different processes/machines: Hashtable (in-memory); SysCache (uses ASP.NET as the cache provider); SysCache2 (same as above but with support for SQL Server SQL Dependencies); Prevalence; SharedCache; Memcached; Redis; NCache; Appfabric Caching. Out of the box, Entity Framework does not have any second-level cache mechanism, however, there are some public samples that show how we can add this. ID Generators NHibernate supports different ID generation strategies, coming from the database and otherwise: Identity (for SQL Server, MySQL, and databases who support identity columns); Sequence (for Oracle, PostgreSQL, and others who support sequences); Trigger-based; HiLo; Sequence HiLo (for databases that support sequences); Several GUID flavors, both in GUID as well as in string format; Increment (for single-user uses); Assigned (must know what you’re doing); Sequence-style (either uses an actual sequence or a single-column table); Table of ids; Pooled (similar to HiLo but stores high values in a table); Native (uses whatever mechanism the current database supports, identity or sequence). Entity Framework only supports: Identity generation; GUIDs; Assigned values. Properties NHibernate supports properties of entity types (one to one or many to one), collections (one to many or many to many) as well as scalars and enumerations. It offers a mechanism for having complex property types generated from the database, which even include support for querying. It also supports properties originated from SQL formulas. Entity Framework only supports scalars, entity types and collections. Enumerations support will come in the next version. Events and Interception NHibernate has a very rich event model, that exposes more than 20 events, either for synchronous pre-execution or asynchronous post-execution, including: Pre/Post-Load; Pre/Post-Delete; Pre/Post-Insert; Pre/Post-Update; Pre/Post-Flush. It also features interception of class instancing and SQL generation. As for Entity Framework, only two events exist: ObjectMaterialized (after loading an entity from the database); SavingChanges (before saving changes, which include deleting, inserting and updating). Tracking Changes For NHibernate as well as Entity Framework, all changes are tracked by their respective Unit of Work implementation. Entities can be attached and detached to it, Entity Framework does, however, also support self-tracking entities. Optimistic Concurrency Control NHibernate supports all of the imaginable scenarios: SQL Server’s ROWVERSION; Oracle’s ORA_ROWSCN; A column containing date and time; A column containing a version number; All/dirty columns comparison. Entity Framework is more focused on Entity Framework, so it only supports: SQL Server’s ROWVERSION; Comparing all/some columns. Batching NHibernate has full support for insertion batching, but only if the ID generator in use is not database-based (for example, it cannot be used with Identity), whereas Entity Framework has no batching at all. Cascading Both support cascading for collections and associations: when an entity is deleted, their conceptual children are also deleted. NHibernate also offers the possibility to set the foreign key column on children to NULL instead of removing them. Flushing Changes NHibernate’s ISession has a FlushMode property that can have the following values: Auto: changes are sent to the database when necessary, for example, if there are dirty instances of an entity type, and a query is performed against this entity type, or if the ISession is being disposed; Commit: changes are sent when committing the current transaction; Never: changes are only sent when explicitly calling Flush(). As for Entity Framework, changes have to be explicitly sent through a call to AcceptAllChanges()/SaveChanges(). Lazy Loading NHibernate supports lazy loading for Associated entities (one to one, many to one); Collections (one to many, many to many); Scalar properties (thing of BLOBs or CLOBs). Entity Framework only supports lazy loading for: Associated entities; Collections. Generating and Updating the Database Both NHibernate and Entity Framework Code First (with the Migrations API) allow creating the database model from the mapping and updating it if the mapping changes. Extensibility As you can guess, NHibernate is far more extensible than Entity Framework. Basically, everything can be extended, from ID generation, to LINQ to SQL transformation, HQL native SQL support, custom column types, custom association collections, SQL generation, supported databases, etc. With Entity Framework your options are more limited, at least, because practically no information exists as to what can be extended/changed. It features a provider model that can be extended to support any database. Integration With Other Microsoft APIs and Tools When it comes to integration with Microsoft technologies, it will come as no surprise that Entity Framework offers the best support. For example, the following technologies are fully supported: ASP.NET (through the EntityDataSource); ASP.NET Dynamic Data; WCF Data Services; WCF RIA Services; Visual Studio (through the integrated designer). Documentation This is another point where Entity Framework is superior: NHibernate lacks, for starters, an up to date API reference synchronized with its current version. It does have a community mailing list, blogs and wikis, although not much used. Entity Framework has a number of resources on MSDN and, of course, several forums and discussion groups exist. Conclusion Like I said, this is a personal list. I may come as a surprise to some that Entity Framework is so behind NHibernate in so many aspects, but it is true that NHibernate is much older and, due to its open-source nature, is not tied to product-specific timeframes and can thus evolve much more rapidly. I do like both, and I chose whichever is best for the job I have at hands. I am looking forward to the changes in EF5 which will add significant value to an already interesting product. So, what do you think? Did I forget anything important or is there anything else worth talking about? Looking forward for your comments!

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• The Execute SQL Task

  In this article we are going to take you through the Execute SQL Task in SQL Server Integration Services for SQL Server 2005 (although it appies just as well to SQL Server 2008).  We will be covering all the essentials that you will need to know to effectively use this task and make it as flexible as possible. The things we will be looking at are as follows: A tour of the Task. The properties of the Task. After looking at these introductory topics we will then get into some examples. The examples will show different types of usage for the task: Returning a single value from a SQL query with two input parameters. Returning a rowset from a SQL query. Executing a stored procedure and retrieveing a rowset, a return value, an output parameter value and passing in an input parameter. Passing in the SQL Statement from a variable. Passing in the SQL Statement from a file. Tour Of The Task Before we can start to use the Execute SQL Task in our packages we are going to need to locate it in the toolbox. Let's do that now. Whilst in the Control Flow section of the package expand your toolbox and locate the Execute SQL Task. Below is how we found ours. Now drag the task onto the designer. As you can see from the following image we have a validation error appear telling us that no connection manager has been assigned to the task. This can be easily remedied by creating a connection manager. There are certain types of connection manager that are compatable with this task so we cannot just create any connection manager and these are detailed in a few graphics time. Double click on the task itself to take a look at the custom user interface provided to us for this task. The task will open on the general tab as shown below. Take a bit of time to have a look around here as throughout this article we will be revisting this page many times. Whilst on the general tab, drop down the combobox next to the ConnectionType property. In here you will see the types of connection manager which this task will accept. As with SQL Server 2000 DTS, SSIS allows you to output values from this task in a number of formats. Have a look at the combobox next to the Resultset property. The major difference here is the ability to output into XML. If you drop down the combobox next to the SQLSourceType property you will see the ways in which you can pass a SQL Statement into the task itself. We will have examples of each of these later on but certainly when we saw these for the first time we were very excited. Next to the SQLStatement property if you click in the empty box next to it you will see ellipses appear. Click on them and you will see the very basic query editor that becomes available to you. Alternatively after you have specified a connection manager for the task you can click on the Build Query button to bring up a completely different query editor. This is slightly inconsistent. Once you've finished looking around the general tab, move on to the next tab which is the parameter mapping tab. We shall, again, be visiting this tab throughout the article but to give you an initial heads up this is where you define the input, output and return values from your task. Note this is not where you specify the resultset. If however you now move on to the ResultSet tab this is where you define what variable will receive the output from your SQL Statement in whatever form that is. Property Expressions are one of the most amazing things to happen in SSIS and they will not be covered here as they deserve a whole article to themselves. Watch out for this as their usefulness will astound you. For a more detailed discussion of what should be the parameter markers in the SQL Statements on the General tab and how to map them to variables on the Parameter Mapping tab see Working with Parameters and Return Codes in the Execute SQL Task. Task Properties There are two places where you can specify the properties for your task. One is in the task UI itself and the other is in the property pane which will appear if you right click on your task and select Properties from the context menu. We will be doing plenty of property setting in the UI later so let's take a moment to have a look at the property pane. Below is a graphic showing our properties pane. Now we shall take you through all the properties and tell you exactly what they mean. A lot of these properties you will see across all tasks as well as the package because of everything's base structure The Container. BypassPrepare Should the statement be prepared before sending to the connection manager destination (True/False) Connection This is simply the name of the connection manager that the task will use. We can get this from the connection manager tray at the bottom of the package. DelayValidation Really interesting property and it tells the task to not validate until it actually executes. A usage for this may be that you are operating on table yet to be created but at runtime you know the table will be there. Description Very simply the description of your Task. Disable Should the task be enabled or not? You can also set this through a context menu by right clicking on the task itself. DisableEventHandlers As a result of events that happen in the task, should the event handlers for the container fire? ExecValueVariable The variable assigned here will get or set the execution value of the task. Expressions Expressions as we mentioned earlier are a really powerful tool in SSIS and this graphic below shows us a small peek of what you can do. We select a property on the left and assign an expression to the value of that property on the right causing the value to be dynamically changed at runtime. One of the most obvious uses of this is that the property value can be built dynamically from within the package allowing you a great deal of flexibility FailPackageOnFailure If this task fails does the package? FailParentOnFailure If this task fails does the parent container? A task can he hosted inside another container i.e. the For Each Loop Container and this would then be the parent. ForcedExecutionValue This property allows you to hard code an execution value for the task. ForcedExecutionValueType What is the datatype of the ForcedExecutionValue? ForceExecutionResult Force the task to return a certain execution result. This could then be used by the workflow constraints. Possible values are None, Success, Failure and Completion. ForceExecutionValue Should we force the execution result? IsolationLevel This is the transaction isolation level of the task. IsStoredProcedure Certain optimisations are made by the task if it knows that the query is a Stored Procedure invocation. The docs say this will always be false unless the connection is an ADO connection. LocaleID Gets or sets the LocaleID of the container. LoggingMode Should we log for this container and what settings should we use? The value choices are UseParentSetting, Enabled and Disabled. MaximumErrorCount How many times can the task fail before we call it a day? Name Very simply the name of the task. ResultSetType How do you want the results of your query returned? The choices are ResultSetType_None, ResultSetType_SingleRow, ResultSetType_Rowset and ResultSetType_XML. SqlStatementSource Your Query/SQL Statement. SqlStatementSourceType The method of specifying the query. Your choices here are DirectInput, FileConnection and Variables TimeOut How long should the task wait to receive results? TransactionOption How should the task handle being asked to join a transaction? Usage Examples As we move through the examples we will only cover in them what we think you must know and what we think you should see. This means that some of the more elementary steps like setting up variables will be covered in the early examples but skipped and simply referred to in later ones. All these examples used the AventureWorks database that comes with SQL Server 2005. Returning a Single Value, Passing in Two Input Parameters So the first thing we are going to do is add some variables to our package. The graphic below shows us those variables having been defined. Here the CountOfEmployees variable will be used as the output from the query and EndDate and StartDate will be used as input parameters. As you can see all these variables have been scoped to the package. Scoping allows us to have domains for variables. Each container has a scope and remember a package is a container as well. Variable values of the parent container can be seen in child containers but cannot be passed back up to the parent from a child. Our following graphic has had a number of changes made. The first of those changes is that we have created and assigned an OLEDB connection manager to this Task ExecuteSQL Task Connection. The next thing is we have made sure that the SQLSourceType property is set to Direct Input as we will be writing in our statement ourselves. We have also specified that only a single row will be returned from this query. The expressions we typed in was: SELECT COUNT(*) AS CountOfEmployees FROM HumanResources.Employee WHERE (HireDate BETWEEN ? AND ?) Moving on now to the Parameter Mapping tab this is where we are going to tell the task about our input paramaters. We Add them to the window specifying their direction and datatype. A quick word here about the structure of the variable name. As you can see SSIS has preceeded the variable with the word user. This is a default namespace for variables but you can create your own. When defining your variables if you look at the variables window title bar you will see some icons. If you hover over the last one on the right you will see it says "Choose Variable Columns". If you click the button you will see a list of checkbox options and one of them is namespace. after checking this you will see now where you can define your own namespace. The next tab, result set, is where we need to get back the value(s) returned from our statement and assign to a variable which in our case is CountOfEmployees so we can use it later perhaps. Because we are only returning a single value then if you remember from earlier we are allowed to assign a name to the resultset but it must be the name of the column (or alias) from the query. A really cool feature of Business Intelligence Studio being hosted by Visual Studio is that we get breakpoint support for free. In our package we set a Breakpoint so we can break the package and have a look in a watch window at the variable values as they appear to our task and what the variable value of our resultset is after the task has done the assignment. Here's that window now. As you can see the count of employess that matched the data range was 2. Returning a Rowset In this example we are going to return a resultset back to a variable after the task has executed not just a single row single value. There are no input parameters required so the variables window is nice and straight forward. One variable of type object. Here is the statement that will form the soure for our Resultset. select p.ProductNumber, p.name, pc.Name as ProductCategoryNameFROM Production.ProductCategory pcJOIN Production.ProductSubCategory pscON pc.ProductCategoryID = psc.ProductCategoryIDJOIN Production.Product pON psc.ProductSubCategoryID = p.ProductSubCategoryID We need to make sure that we have selected Full result set as the ResultSet as shown below on the task's General tab. Because there are no input parameters we can skip the parameter mapping tab and move straight to the Result Set tab. Here we need to Add our variable defined earlier and map it to the result name of 0 (remember we covered this earlier) Once we run the task we can again set a breakpoint and have a look at the values coming back from the task. In the following graphic you can see the result set returned to us as a COM object. We can do some pretty interesting things with this COM object and in later articles that is exactly what we shall be doing. Return Values, Input/Output Parameters and Returning a Rowset from a Stored Procedure This example is pretty much going to give us a taste of everything. We have already covered in the previous example how to specify the ResultSet to be a Full result set so we will not cover it again here. For this example we are going to need 4 variables. One for the return value, one for the input parameter, one for the output parameter and one for the result set. Here is the statement we want to execute. Note how much cleaner it is than if you wanted to do it using the current version of DTS. In the Parameter Mapping tab we are going to Add our variables and specify their direction and datatypes. In the Result Set tab we can now map our final variable to the rowset returned from the stored procedure. It really is as simple as that and we were amazed at how much easier it is than in DTS 2000. Passing in the SQL Statement from a Variable SSIS as we have mentioned is hugely more flexible than its predecessor and one of the things you will notice when moving around the tasks and the adapters is that a lot of them accept a variable as an input for something they need. The ExecuteSQL task is no different. It will allow us to pass in a string variable as the SQL Statement. This variable value could have been set earlier on from inside the package or it could have been populated from outside using a configuration. The ResultSet property is set to single row and we'll show you why in a second when we look at the variables. Note also the SQLSourceType property. Here's the General Tab again. Looking at the variable we have in this package you can see we have only two. One for the return value from the statement and one which is obviously for the statement itself. Again we need to map the Result name to our variable and this can be a named Result Name (The column name or alias returned by the query) and not 0. The expected result into our variable should be the amount of rows in the Person.Contact table and if we look in the watch window we see that it is.   Passing in the SQL Statement from a File The final example we are going to show is a really interesting one. We are going to pass in the SQL statement to the task by using a file connection manager. The file itself contains the statement to run. The first thing we are going to need to do is create our file connection mananger to point to our file. Click in the connections tray at the bottom of the designer, right click and choose "New File Connection" As you can see in the graphic below we have chosen to use an existing file and have passed in the name as well. Have a look around at the other "Usage Type" values available whilst you are here. Having set that up we can now see in the connection manager tray our file connection manager sitting alongside our OLE-DB connection we have been using for the rest of these examples. Now we can go back to the familiar General Tab to set up how the task will accept our file connection as the source. All the other properties in this task are set up exactly as we have been doing for other examples depending on the options chosen so we will not cover them again here.   We hope you will agree that the Execute SQL Task has changed considerably in this release from its DTS predecessor. It has a lot of options available but once you have configured it a few times you get to learn what needs to go where. We hope you have found this article useful.

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