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  • PHP delete script, return to 'viewsubjects.php?classroom_id=NO VALUE'

    - by Derek
    Hi, As the title states... I am deleting a 'subject' from a 'classroom' I view classrooms, then can click on a classroom to view the subject for that classroom. So the link where I am viewing subjects looks like: viewsubjects.php?classroom=23 When the user selects the delete button (in a row) to remove a subject from a class, I simply want the user to be redirected back to the list of subjects for the classroom (exactly where they were before!!) So I though this is simply a case of calling up the classroom ID within my delete script. Here is what I have: EDIT: corrected spelling mistake in code (this was not the problem) $subject_id = $_GET['subject_id']; $classroom_id = $_GET['classroom_id']; $sql = "DELETE FROM subjects WHERE subject_id=".$subject_id; $result = mysql_query($sql, $connection) or die("MySQL Error: ".mysql_error()); header("Location: viewsubjects.php?classroom_id=".$classroom_id); exit(); The subject is being removed from the DB, but when I am redirected back the URI is displaying with an empty classroom ID like: viewsubjects.php?classroom_id= Is there a way to carry the classroom ID through successfully through the delete script so it can be displayed after, allowing the user to be redirected back to the page? Thanks for any help!

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  • how to use database name as a value

    - by user316833
    I have more than 1000 access databases with the same table names.Each database has a unique name. In each database, I want to add column to one existing table and populate that new column (all rows in the table would be the same) with the database name. I found the example below - How can I alter this to give the new column the name of the database. ALTER TABLE TestTable ADD NewColumn INT; UPDATE TestTable SET NewColumn = 0;

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  • php, how to get a array varible value ?

    - by NovaYear
    $lang['profil_basic_medeni'] = array( 1 => 'Bekâr', 2 => 'Evli', 3 => 'Nisanli', 4 => 'Iliskide', 5 => 'Ayrilmis', 6 => 'Bosanmis' ); $lang['profil_basic_sac'] = array( 1 => 'Normal', 2 => 'Kisa', 3 => 'Orta', 4 => 'Uzun', 5 => 'Fönlü', 6 => 'Saçsiz (Dazlak)', 7 => 'Karisik/Daginik', 8 => 'Her Zaman Bol Jöleli :)' ); function sGetVAL($item,$valno) { $sonuc = $lang[$item][$valno]; return $sonuc; } $tempVAL1 = sGetVAL('profil_basic_medeni','3'); // return null //or $tempVAL2 = sGetVAL('profil_basic_sac','7'); // return null $tempVAL1 or $tempVAL2 always return null. why ? how to fix function sGetVAL ???

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  • Dynamic Types and DynamicObject References in C#

    - by Rick Strahl
    I've been working a bit with C# custom dynamic types for several customers recently and I've seen some confusion in understanding how dynamic types are referenced. This discussion specifically centers around types that implement IDynamicMetaObjectProvider or subclass from DynamicObject as opposed to arbitrary type casts of standard .NET types. IDynamicMetaObjectProvider types  are treated special when they are cast to the dynamic type. Assume for a second that I've created my own implementation of a custom dynamic type called DynamicFoo which is about as simple of a dynamic class that I can think of:public class DynamicFoo : DynamicObject { Dictionary<string, object> properties = new Dictionary<string, object>(); public string Bar { get; set; } public DateTime Entered { get; set; } public override bool TryGetMember(GetMemberBinder binder, out object result) { result = null; if (!properties.ContainsKey(binder.Name)) return false; result = properties[binder.Name]; return true; } public override bool TrySetMember(SetMemberBinder binder, object value) { properties[binder.Name] = value; return true; } } This class has an internal dictionary member and I'm exposing this dictionary member through a dynamic by implementing DynamicObject. This implementation exposes the properties dictionary so the dictionary keys can be referenced like properties (foo.NewProperty = "Cool!"). I override TryGetMember() and TrySetMember() which are fired at runtime every time you access a 'property' on a dynamic instance of this DynamicFoo type. Strong Typing and Dynamic Casting I now can instantiate and use DynamicFoo in a couple of different ways: Strong TypingDynamicFoo fooExplicit = new DynamicFoo(); var fooVar = new DynamicFoo(); These two commands are essentially identical and use strong typing. The compiler generates identical code for both of them. The var statement is merely a compiler directive to infer the type of fooVar at compile time and so the type of fooExplicit is DynamicFoo, just like fooExplicit. This is very static - nothing dynamic about it - and it completely ignores the IDynamicMetaObjectProvider implementation of my class above as it's never used. Using either of these I can access the native properties:DynamicFoo fooExplicit = new DynamicFoo();// static typing assignmentsfooVar.Bar = "Barred!"; fooExplicit.Entered = DateTime.Now; // echo back static values Console.WriteLine(fooVar.Bar); Console.WriteLine(fooExplicit.Entered); but I have no access whatsoever to the properties dictionary. Basically this creates a strongly typed instance of the type with access only to the strongly typed interface. You get no dynamic behavior at all. The IDynamicMetaObjectProvider features don't kick in until you cast the type to dynamic. If I try to access a non-existing property on fooExplicit I get a compilation error that tells me that the property doesn't exist. Again, it's clearly and utterly non-dynamic. Dynamicdynamic fooDynamic = new DynamicFoo(); fooDynamic on the other hand is created as a dynamic type and it's a completely different beast. I can also create a dynamic by simply casting any type to dynamic like this:DynamicFoo fooExplicit = new DynamicFoo(); dynamic fooDynamic = fooExplicit; Note that dynamic typically doesn't require an explicit cast as the compiler automatically performs the cast so there's no need to use as dynamic. Dynamic functionality works at runtime and allows for the dynamic wrapper to look up and call members dynamically. A dynamic type will look for members to access or call in two places: Using the strongly typed members of the object Using theIDynamicMetaObjectProvider Interface methods to access members So rather than statically linking and calling a method or retrieving a property, the dynamic type looks up - at runtime  - where the value actually comes from. It's essentially late-binding which allows runtime determination what action to take when a member is accessed at runtime *if* the member you are accessing does not exist on the object. Class members are checked first before IDynamicMetaObjectProvider interface methods are kick in. All of the following works with the dynamic type:dynamic fooDynamic = new DynamicFoo(); // dynamic typing assignments fooDynamic.NewProperty = "Something new!"; fooDynamic.LastAccess = DateTime.Now; // dynamic assigning static properties fooDynamic.Bar = "dynamic barred"; fooDynamic.Entered = DateTime.Now; // echo back dynamic values Console.WriteLine(fooDynamic.NewProperty); Console.WriteLine(fooDynamic.LastAccess); Console.WriteLine(fooDynamic.Bar); Console.WriteLine(fooDynamic.Entered); The dynamic type can access the native class properties (Bar and Entered) and create and read new ones (NewProperty,LastAccess) all using a single type instance which is pretty cool. As you can see it's pretty easy to create an extensible type this way that can dynamically add members at runtime dynamically. The Alter Ego of IDynamicObject The key point here is that all three statements - explicit, var and dynamic - declare a new DynamicFoo(), but the dynamic declaration results in completely different behavior than the first two simply because the type has been cast to dynamic. Dynamic binding means that the type loses its typical strong typing, compile time features. You can see this easily in the Visual Studio code editor. As soon as you assign a value to a dynamic you lose Intellisense and you see which means there's no Intellisense and no compiler type checking on any members you apply to this instance. If you're new to the dynamic type it might seem really confusing that a single type can behave differently depending on how it is cast, but that's exactly what happens when you use a type that implements IDynamicMetaObjectProvider. Declare the type as its strong type name and you only get to access the native instance members of the type. Declare or cast it to dynamic and you get dynamic behavior which accesses native members plus it uses IDynamicMetaObjectProvider implementation to handle any missing member definitions by running custom code. You can easily cast objects back and forth between dynamic and the original type:dynamic fooDynamic = new DynamicFoo(); fooDynamic.NewProperty = "New Property Value"; DynamicFoo foo = fooDynamic; foo.Bar = "Barred"; Here the code starts out with a dynamic cast and a dynamic assignment. The code then casts back the value to the DynamicFoo. Notice that when casting from dynamic to DynamicFoo and back we typically do not have to specify the cast explicitly - the compiler can induce the type so I don't need to specify as dynamic or as DynamicFoo. Moral of the Story This easy interchange between dynamic and the underlying type is actually super useful, because it allows you to create extensible objects that can expose non-member data stores and expose them as an object interface. You can create an object that hosts a number of strongly typed properties and then cast the object to dynamic and add additional dynamic properties to the same type at runtime. You can easily switch back and forth between the strongly typed instance to access the well-known strongly typed properties and to dynamic for the dynamic properties added at runtime. Keep in mind that dynamic object access has quite a bit of overhead and is definitely slower than strongly typed binding, so if you're accessing the strongly typed parts of your objects you definitely want to use a strongly typed reference. Reserve dynamic for the dynamic members to optimize your code. The real beauty of dynamic is that with very little effort you can build expandable objects or objects that expose different data stores to an object interface. I'll have more on this in my next post when I create a customized and extensible Expando object based on DynamicObject.© Rick Strahl, West Wind Technologies, 2005-2012Posted in CSharp  .NET   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • Creating metadata value relationships

    - by kyle.hatlestad
    I was recently asked an question about an interesting use case. They wanted content to be submitted into UCM with a particular ID in a custom metadata field. But they wanted that ID to be translated during submission into an employee name in another metadata field upon submission. My initial thought was that this could be done with a dependent choice list (DCL). One option list field driving the choices in another. But this didn't work in this case for a couple of reasons. First, the number of IDs could potentially be very large. So making that into a drop-down list would not be practical. The preference would be for that field to simply be a text field to type in the ID. Secondly, data could be submitted through different methods other then the web-based check-in form. And without an interface to select the DCL choices, the system needed a way to determine and populate the name field. So instead I went the approach of having the value of the ID field drive the value of the Name field using the derived field approach in my rule. In looking at it though, it was easy to simply copy the value of the ID field into the Name field...but to have it look up and translate the value proved to be the tricky part. So here is the approach I took... First I created my two metadata fields as standard text fields in the Configuration Manager applet. Next I create a table that stores the relationship between the IDs and Names. I then create a View into that table and set the column to the EmployeeID. I now create a new Application Field and set it as an option list using the View I created in the previous step. The reason I create it as an Application field is because I don't need to display the field or store a value in it. I simply need to make use of the option list in the next step... Finally, I create a Rule in which I select the Employee Name field and turn on the 'Is derived field' checkbox. I edit the derived value and add a new condition. Because the option list is a Application field and not an Information field, I can't use the Compute button. Instead, I insert this line directly in the Value field: @getFieldViewValue("EmployeeMapping",#active.xEmployeeID, "EmployeeName") The "EmployeeMapping" parameter designates that the value should be pulled from the EmployeeMapping Application field that I had created in the previous step. The #active.xEmployeeID field is the ID value that should be pulled from what the user entered. "EmployeeName" is the column name in the table which has the value which corresponds to the ID. The extracted name then becomes the value within our Employee Name field. That's it. You can then add additional Rules to make the Name field read-only/hidden on the check-in page and such.

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  • Enum types, FlagAttribute & Zero value

    - by nmgomes
    We all know about Enums types and use them every single day. What is not that often used is to decorate the Enum type with the FlagsAttribute. When an Enum type has the FlagsAttribute we can assign multiple values to it and thus combine multiple information into a single enum. The enum values should be a power of two so that a bit set is achieved. Here is a typical Enum type: public enum OperationMode { /// <summary> /// No operation mode /// </summary> None = 0, /// <summary> /// Standard operation mode /// </summary> Standard = 1, /// <summary> /// Accept bubble requests mode /// </summary> Parent = 2 } In such scenario no values combination are possible. In the following scenario a default operation mode exists and combination is used: [Flags] public enum OperationMode { /// <summary> /// Asynchronous operation mode /// </summary> Async = 0, /// <summary> /// Synchronous operation mode /// </summary> Sync = 1, /// <summary> /// Accept bubble requests mode /// </summary> Parent = 2 } Now, it’s possible to do statements like: [DefaultValue(OperationMode.Async)] [TypeConverter(typeof(EnumConverter))] public OperationMode Mode { get; set; } /// <summary> /// Gets a value indicating whether this instance supports request from childrens. /// </summary> public bool IsParent { get { return (this.Mode & OperationMode.Parent) == OperationMode.Parent; } } or switch (this.Mode) { case OperationMode.Sync | OperationMode.Parent: Console.WriteLine("Sync,Parent"); break;[…]  But there is something that you should never forget: Zero is the absorber element for the bitwise AND operation. So, checking for OperationMode.Async (the Zero value) mode just like the OperationMode.Parent mode makes no sense since it will always be true: (this.Mode & 0x0) == 0x0 Instead, inverse logic should be used: OperationMode.Async = !OperationMode.Sync public bool IsAsync { get { return (this.Mode & ContentManagerOperationMode.Sync) != ContentManagerOperationMode.Sync; } } or public bool IsAsync { get { return (int)this.Mode == 0; } } Final Note: Benefits Allow multiple values combination The above samples snippets were taken from an ASP.NET control and enabled the following markup usage: <my:Control runat="server" Mode="Sync,Parent"> Drawback Zero value is the absorber element for the bitwise AND operation Be very carefully when evaluating the Zero value, either evaluate the enum value as an integer or use inverse logic.

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  • comparing value with array value problem Javascript

    - by Java starter
    This code is what I use now, it dos not work when I trie to use an array to compate values. If anybody has any idea of why, please respond. <html> <head> <script type-'text/javascript'> function hovedFunksjon() { //alert("test av funksjon fungerte"); //alert(passordLager); window.open("index10.html","Window1","menubar=no,width=430,height=360,toolbar=no"); } function inArray(array, value) { for (var i = 0; i < array.length; i++) { if (array[i] == value) return true; } return false; } function spørOmPassord() { var passordLager = ["pass0","pass1","pass2"]; window.passordInput = prompt("password");//Ved å bruke "window." skaper man en global variabel //if (passordInput == passordLager[0] || passordLager[1] || passordLager[2]) if (inArray(passordLager,passorInput) ) { hovedFunksjon(); } else { alert("Feil passord"); //href="javascript:self.close()">close window } } function changeBackgroundColor() { //document.bgColor="#CC9900"; //document.bgColor="YELLOW" document.bgColor="BLACK" } </script> </head> <body> <script type-'text/javascript'> changeBackgroundColor(); </script> <div align="center"> <form> <input type = "button" value = "Logg inn" onclick="spørOmPassord()"> </form> </div> </body> </html>

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  • My IIS server won't serve SSL sites to some browsers

    - by sbleon
    (Update: This is now cross-posted at http://stackoverflow.com/questions/3355000. This is the more appropriate forum, but StackOverflow gets a lot more traffic.) I've got an IIS 6.0 server that won't serve pages over SSL to some browsers. In Webkit-based browsers on OS X 10.6, I can't load pages at all. In MSIE 8 on Windows XP SP3, I can load pages, but it will sometimes hang downloading images or sending POSTs. Working: Firefox 3.6 (OS X + Windows) Chrome (Windows) Partially Working: MSIE 8 (works sometimes, but hangs up, especially on POSTs) Not Working: Chrome 5 (OS X) Safari 5 (OS X) Mobile Safari (iOS 4) On OS X (the easiest platform for me to test on), Chrome and Firefox both negotiate the same TLS Cipher, but Chrome hangs on or after the post-negotiation handshake. Chrome packet capture (via ssldump): 1 1 0.0485 (0.0485) C>S Handshake ClientHello Version 3.1 cipher suites Unknown value 0xc00a Unknown value 0xc009 Unknown value 0xc007 Unknown value 0xc008 Unknown value 0xc013 Unknown value 0xc014 Unknown value 0xc011 Unknown value 0xc012 Unknown value 0xc004 Unknown value 0xc005 Unknown value 0xc002 Unknown value 0xc003 Unknown value 0xc00e Unknown value 0xc00f Unknown value 0xc00c Unknown value 0xc00d Unknown value 0x2f TLS_RSA_WITH_RC4_128_SHA TLS_RSA_WITH_RC4_128_MD5 Unknown value 0x35 TLS_RSA_WITH_3DES_EDE_CBC_SHA Unknown value 0x32 Unknown value 0x33 Unknown value 0x38 Unknown value 0x39 TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA compression methods NULL 1 2 0.3106 (0.2620) S>C Handshake ServerHello Version 3.1 session_id[32]= bb 0e 00 00 7a 7e 07 50 5e 78 48 cf 43 5a f7 4d d2 ed 72 8f ff 1d 9e 74 66 74 03 b3 bb 92 8d eb cipherSuite TLS_RSA_WITH_RC4_128_MD5 compressionMethod NULL Certificate ServerHelloDone 1 3 0.3196 (0.0090) C>S Handshake ClientKeyExchange 1 4 0.3197 (0.0000) C>S ChangeCipherSpec 1 5 0.3197 (0.0000) C>S Handshake [hang, no more data transmitted] Firefox packet capture: 1 1 0.0485 (0.0485) C>S Handshake ClientHello Version 3.1 resume [32]= 14 03 00 00 4e 28 de aa da 7a 25 87 25 32 f3 a7 ae 4c 2d a0 e4 57 cc dd d7 0e d7 82 19 f7 8f b9 cipher suites Unknown value 0xff Unknown value 0xc00a Unknown value 0xc014 Unknown value 0x88 Unknown value 0x87 Unknown value 0x39 Unknown value 0x38 Unknown value 0xc00f Unknown value 0xc005 Unknown value 0x84 Unknown value 0x35 Unknown value 0xc007 Unknown value 0xc009 Unknown value 0xc011 Unknown value 0xc013 Unknown value 0x45 Unknown value 0x44 Unknown value 0x33 Unknown value 0x32 Unknown value 0xc00c Unknown value 0xc00e Unknown value 0xc002 Unknown value 0xc004 Unknown value 0x96 Unknown value 0x41 TLS_RSA_WITH_RC4_128_MD5 TLS_RSA_WITH_RC4_128_SHA Unknown value 0x2f Unknown value 0xc008 Unknown value 0xc012 TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA Unknown value 0xc00d Unknown value 0xc003 Unknown value 0xfeff TLS_RSA_WITH_3DES_EDE_CBC_SHA compression methods NULL 1 2 0.0983 (0.0497) S>C Handshake ServerHello Version 3.1 session_id[32]= 14 03 00 00 4e 28 de aa da 7a 25 87 25 32 f3 a7 ae 4c 2d a0 e4 57 cc dd d7 0e d7 82 19 f7 8f b9 cipherSuite TLS_RSA_WITH_RC4_128_MD5 compressionMethod NULL 1 3 0.0983 (0.0000) S>C ChangeCipherSpec 1 4 0.0983 (0.0000) S>C Handshake 1 5 0.1019 (0.0035) C>S ChangeCipherSpec 1 6 0.1019 (0.0000) C>S Handshake 1 7 0.1019 (0.0000) C>S application_data 1 8 0.2460 (0.1440) S>C application_data 1 9 0.3108 (0.0648) S>C application_data 1 10 0.3650 (0.0542) S>C application_data 1 11 0.4188 (0.0537) S>C application_data 1 12 0.4580 (0.0392) S>C application_data 1 13 0.4831 (0.0251) S>C application_data [etc] Update: Here's a Wireshark capture from the server end. What's going on with those two much-delayed RST packets? Is that just IIS terminating what it perceives as a non-responsive connection? 19 10.129450 67.249.xxx.xxx 10.100.xxx.xx TCP 50653 > https [SYN] Seq=0 Win=65535 Len=0 MSS=1460 WS=3 TSV=699250189 TSER=0 20 10.129517 10.100.xxx.xx 67.249.xxx.xxx TCP https > 50653 [SYN, ACK] Seq=0 Ack=1 Win=16384 Len=0 MSS=1460 WS=0 TSV=0 TSER=0 21 10.168596 67.249.xxx.xxx 10.100.xxx.xx TCP 50653 > https [ACK] Seq=1 Ack=1 Win=524280 Len=0 TSV=699250189 TSER=0 22 10.172950 67.249.xxx.xxx 10.100.xxx.xx TLSv1 Client Hello 23 10.173267 10.100.xxx.xx 67.249.xxx.xxx TCP [TCP segment of a reassembled PDU] 24 10.173297 10.100.xxx.xx 67.249.xxx.xxx TCP [TCP segment of a reassembled PDU] 25 10.385180 67.249.xxx.xxx 10.100.xxx.xx TCP 50653 > https [ACK] Seq=148 Ack=2897 Win=524280 Len=0 TSV=699250191 TSER=163006 26 10.385235 10.100.xxx.xx 67.249.xxx.xxx TLSv1 Server Hello, Certificate, Server Hello Done 27 10.424682 67.249.xxx.xxx 10.100.xxx.xx TCP 50653 > https [ACK] Seq=148 Ack=4215 Win=524280 Len=0 TSV=699250192 TSER=163008 28 10.435245 67.249.xxx.xxx 10.100.xxx.xx TLSv1 Client Key Exchange 29 10.438522 67.249.xxx.xxx 10.100.xxx.xx TLSv1 Change Cipher Spec 30 10.438553 10.100.xxx.xx 67.249.xxx.xxx TCP https > 50653 [ACK] Seq=4215 Ack=421 Win=65115 Len=0 TSV=163008 TSER=699250192 31 10.449036 67.249.xxx.xxx 10.100.xxx.xx TLSv1 Encrypted Handshake Message 32 10.580652 10.100.xxx.xx 67.249.xxx.xxx TCP https > 50653 [ACK] Seq=4215 Ack=458 Win=65078 Len=0 TSV=163010 TSER=699250192 7312 57.315338 10.100.xxx.xx 67.249.xxx.xxx TCP https > 50644 [RST, ACK] Seq=1 Ack=1 Win=0 Len=0 19531 142.316425 10.100.xxx.xx 67.249.xxx.xxx TCP https > 50653 [RST, ACK] Seq=4215 Ack=458 Win=0 Len=0

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  • SQL SERVER – Using expressor Composite Types to Enforce Business Rules

    - by pinaldave
    One of the features that distinguish the expressor Data Integration Platform from other products in the data integration space is its concept of composite types, which provide an effective and easily reusable way to clearly define the structure and characteristics of data within your application.  An important feature of the composite type approach is that it allows you to easily adjust the content of a record to its ultimate purpose.  For example, a record used to update a row in a database table is easily defined to include only the minimum set of columns, that is, a value for the key column and values for only those columns that need to be updated. Much like a class in higher level programming languages, you can also use the composite type as a way to enforce business rules onto your data by encapsulating a datum’s name, data type, and constraints (for example, maximum, minimum, or acceptable values) as a single entity, which ensures that your data can not assume an invalid value.  To what extent you use this functionality is a decision you make when designing your application; the expressor design paradigm does not force this approach on you. Let’s take a look at how these features are used.  Suppose you want to create a group of applications that maintain the employee table in your human resources database. Your table might have a structure similar to the HumanResources.Employee table in the AdventureWorks database.  This table includes two columns, EmployeID and rowguid, that are maintained by the relational database management system; you cannot provide values for these columns when inserting new rows into the table. Additionally, there are columns such as VacationHours and SickLeaveHours that you might choose to update for all employees on a monthly basis, which justifies creation of a dedicated application. By creating distinct composite types for the read, insert and update operations against this table, you can more easily manage this table’s content. When developing this application within expressor Studio, your first task is to create a schema artifact for the database table.  This process is completely driven by a wizard, only requiring that you select the desired database schema and table.  The resulting schema artifact defines the mapping of result set records to a record within the expressor data integration application.  The structure of the record within the expressor application is a composite type that is given the default name CompositeType1.  As you can see in the following figure, all columns from the table are included in the result set and mapped to an identically named attribute in the default composite type. If you are developing an application that needs to read this table, perhaps to prepare a year-end report of employees by department, you would probably not be interested in the data in the rowguid and ModifiedDate columns.  A typical approach would be to drop this unwanted data in a downstream operator.  But using an alternative composite type provides a better approach in which the unwanted data never enters your application. While working in expressor  Studio’s schema editor, simply create a second composite type within the same schema artifact, which you could name ReadTable, and remove the attributes corresponding to the unwanted columns. The value of an alternative composite type is even more apparent when you want to insert into or update the table.  In the composite type used to insert rows, remove the attributes corresponding to the EmployeeID primary key and rowguid uniqueidentifier columns since these values are provided by the relational database management system. And to update just the VacationHours and SickLeaveHours columns, use a composite type that includes only the attributes corresponding to the EmployeeID, VacationHours, SickLeaveHours and ModifiedDate columns. By specifying this schema artifact and composite type in a Write Table operator, your upstream application need only deal with the four required attributes and there is no risk of unintentionally overwriting a value in a column that does not need to be updated. Now, what about the option to use the composite type to enforce business rules?  If you review the composition of the default composite type CompositeType1, you will note that the constraints defined for many of the attributes mirror the table column specifications.  For example, the maximum number of characters in the NationaIDNumber, LoginID and Title attributes is equivalent to the maximum width of the target column, and the size of the MaritalStatus and Gender attributes is limited to a single character as required by the table column definition.  If your application code leads to a violation of these constraints, an error will be raised.  The expressor design paradigm then allows you to handle the error in a way suitable for your application.  For example, a string value could be truncated or a numeric value could be rounded. Moreover, you have the option of specifying additional constraints that support business rules unrelated to the table definition. Let’s assume that the only acceptable values for marital status are S, M, and D.  Within the schema editor, double-click on the MaritalStatus attribute to open the Edit Attribute window.  Then click the Allowed Values checkbox and enter the acceptable values into the Constraint Value text box. The schema editor is updated accordingly. There is one more option that the expressor semantic type paradigm supports.  Since the MaritalStatus attribute now clearly specifies how this type of information should be represented (a single character limited to S, M or D), you can convert this attribute definition into a shared type, which will allow you to quickly incorporate this definition into another composite type or into the description of an output record from a transform operator. Again, double-click on the MaritalStatus attribute and in the Edit Attribute window, click Convert, which opens the Share Local Semantic Type window that you use to name this shared type.  There’s no requirement that you give the shared type the same name as the attribute from which it was derived.  You should supply a name that makes it obvious what the shared type represents. In this posting, I’ve overviewed the expressor semantic type paradigm and shown how it can be used to make your application development process more productive.  The beauty of this feature is that you choose when and to what extent you utilize the functionality, but I’m certain that if you opt to follow this approach your efforts will become more efficient and your work will progress more quickly.  As always, I encourage you to download and evaluate expressor Studio for your current and future data integration needs. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: CodeProject, Pinal Dave, PostADay, SQL, SQL Authority, SQL Documentation, SQL Query, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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  • How to handle value types when embedding IronPython in C#?

    - by kloffy
    There is a well known issue when it comes to using .NET value types in IronPython. This has recently caused me a headache when trying to use Python as an embedded scripting language in C#. The problem can be summed up as follows: Given a C# struct such as: struct Vector { public float x; public float y; } And a C# class such as: class Object { public Vector position; } The following will happen in IronPython: obj = Object() print obj.position.x # prints ‘0’ obj.position.x = 1 print obj.position.x # still prints ‘0’ As the article states, this means that value types are mostly immutable. However, this is a problem as I was planning on using a vector library that is implemented as seen above. Are there any workarounds for working with existing libraries that rely on value types? Modifying the library would be the very last resort, but I'd rather avoid that.

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  • Which statically typed languages support intersection types for function return values?

    - by stakx
    Initial note: This question got closed after several edits because I lacked the proper terminology to state accurately what I was looking for. Sam Tobin-Hochstadt then posted a comment which made me recognise exactly what that was: programming languages that support intersection types for function return values. Now that the question has been re-opened, I've decided to improve it by rewriting it in a (hopefully) more precise manner. Therefore, some answers and comments below might no longer make sense because they refer to previous edits. (Please see the question's edit history in such cases.) Are there any popular statically & strongly typed programming languages (such as Haskell, generic Java, C#, F#, etc.) that support intersection types for function return values? If so, which, and how? (If I'm honest, I would really love to see someone demonstrate a way how to express intersection types in a mainstream language such as C# or Java.) I'll give a quick example of what intersection types might look like, using some pseudocode similar to C#: interface IX { … } interface IY { … } interface IB { … } class A : IX, IY { … } class B : IX, IY, IB { … } T fn() where T : IX, IY { return … ? new A() : new B(); } That is, the function fn returns an instance of some type T, of which the caller knows only that it implements interfaces IX and IY. (That is, unlike with generics, the caller doesn't get to choose the concrete type of T — the function does. From this I would suppose that T is in fact not a universal type, but an existential type.) P.S.: I'm aware that one could simply define a interface IXY : IX, IY and change the return type of fn to IXY. However, that is not really the same thing, because often you cannot bolt on an additional interface IXY to a previously defined type A which only implements IX and IY separately. Footnote: Some resources about intersection types: Wikipedia article for "Type system" has a subsection about intersection types. Report by Benjamin C. Pierce (1991), "Programming With Intersection Types, Union Types, and Polymorphism" David P. Cunningham (2005), "Intersection types in practice", which contains a case study about the Forsythe language, which is mentioned in the Wikipedia article. A Stack Overflow question, "Union types and intersection types" which got several good answers, among them this one which gives a pseudocode example of intersection types similar to mine above.

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  • Multiplying field value with retreived value jQuery

    - by Efe
    I pull product price from another page. Then I multiply it with quantity entered in the quantity input field. The problem is, if I forget to enter quantity value before I pull product price data or if I change the quantity field later, the final total price is not updated. I hope I clearly explained it. javascript: $('#AddProduct').click(function() { var i = 0; var adding = $(+(i++)+'<div class="row'+(i)+'"><div class="column width50"><input type="text" id="PRODUCTNAME" name="PRODUCTNAME'+(i)+'" value="" class="width98" /><input type="hidden" class="PRODUCTID" name="PRODUCTID" /><input type="hidden" class="UNITPRICE" name="UNITPRICE'+(i)+'" /><small>Search Products</small></div><div class="column width20"><input type="text" class="UNITQUANTITY" name="UNITQUANTITY'+(i)+'" value="" class="width98" /><small>Quantity</small></div><div class="column width30"><span class="prices">Unit Price:<span class="UNITPRICE"></span><br />Total Price:<span class="TOTALPRICE"></span><br /><a href="#" id="RemoveProduct(".row'+(i)+'");">Remove</a></span></div>'); $('#OrderProducts').append(adding); adding.find("#PRODUCTNAME").autocomplete("orders.cs.asp?Process=ListProducts", { selectFirst: false }).result(function(event, data, formatted) { if (data) { adding.find(".UNITPRICE").html(data[1]); adding.find(".PRODUCTID").val(data[2]); adding.find(".TOTALPRICE").html(data[1] * $('.UNITQUANTITY').val()); } }); return false; }); $('#RemoveProduct').click(function() { $().remove(); return false; }); my html: <fieldset> <h2>Order Items</h2> <div id="OrderProducts"> <a href="#" id="AddProduct"><img src="icons/add.png" alt="Add" /></a> </div> </fieldset> edit Now I totaly messed it up. Removing a row is not working anymore as well... Test link: http://refinethetaste.com/html/cp/?Section=orders&Process=AddOrder#

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  • ControlTemplate with "Control.IsMouseOver" Value="True" and "Control.IsMouseOver" Value="False">

    - by Vinjamuri
    In my WPF control, I have below code. If I don't have a trigger with false, I can see the my storyboard, but if I have both ture and false triggers, I don't see any thing. How to fix this? Appreciate your help! <Trigger Property="Control.IsMouseOver" Value="True"> <StoryBoard> Image with Opacity 1 </StoryBoard> </Trigger> <Trigger Property="Control.IsMouseOver" Value="False"> <StoryBoard> Image with Opacity 0 </StoryBoard> </Trigger>

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  • Best Practices for Content Types in SharePoint

    - by Anna Karin
    Hi all, Recently, we came across a severe problem in production farm with the Content Types. I would like to explain the background of this problem first. We have nice working feature for Content Types installation in production and test farms. We developed and deployed (using wsps) this SharePoint feature in Visual studio. We are using the publishing pages using page layouts and Content Types to help content editors to quickly publish the web pages. Unfortunately, some Content Types have been manually updated/added by some people in the production, so whenever I (developer) make some changes to the existing Content Types (using Visual Studio and feature activation/deactivation) , SharePoint removes one or two columns (during feature activation/deactivation) from Content Types; or the columns which have not been added in a best practice way. I think the best practice is to update Content Types using Visual Studio. Now, I wish to ensure that site columns shouldn't get removed from Content Types upon feature activation/deactivation. Note: Our feature for Content Type activation/deactivation doesn't hold any activation dependencies in the feature.xml

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  • How do you set a double value to a "non-value"

    - by Ankur
    I have two double data elements in an object. Sometimes they are set with a proper value and sometimes not. When the form field from which they values are received is not filled I want to set them to some value that tells me, during the rest of the code that the form fields were left empty. I can't set the values to null as that gives an error, is there some way I can make them 'Undefined'. PS. Not only am I not sure that this is possible, it might not also make sense. But if there is some best practice for such a situation I would be keen to hear it.

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  • generating a class dynamically from types that are fetched at runtime

    - by Ritwik G
    is doing the following possible in C# (or in any other language) 1. I am fetching data from a database. At run time i can compute the no. of columns and data types of the columns fetched. 2. Next i want to "generate" a class with these data types as fields. I also want to store all the records that i fetch in a collection. The problem is that i wanna do both step **1** and **2** at runt ime is this possible ? I am using C# currently but i can shift to something else if i need to.

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  • Change xml attribute in foreach statement c#

    - by user1913479
    I need to save XML-attribute value in a database, using information if checkbox is checked. If checkbox is checked, the attribute value is "TRUE", otherwise it's false. When I use foreach statement, the last enumerated value is usually assigned. Here is the part of my code: XmlAttribute xmlAttribute = xmlDoc.CreateAttribute("BooleanValue"); foreach (string value in list) //list is a List<object> { XmlNode xmlNode = xmlDoc.CreateNode(XmlNodeType.Element, "VALUE", ""); if (checkBox1.Checked || checkBox2.Checked || checkBox3.Checked) xmlAttribute.Value = "TRUE"; if (!checkBox1.Checked || !checkBox2.Checked || !checkBox3.Checked) xmlAttribute.Value = "FALSE"; xmlNode.Attributes.Append(xmlAttribute); xmlNode.InnerText = val; childNode.AppendChild(xmlNode); } When I run my application, I get an XML attribute xmlAttribute "FALSE" value anyway. What I need to have: I need to have the following XML: <ROOT><NODE><VALUE ATTRIBUTE="TRUE">Value 1</VALUE></NODE> <NODE><VALUE ATTRIBUTE="TRUE">Value 2</VALUE></NODE> <NODE><VALUE ATTRIBUTE="FALSE">Value 3</VALUE></NODE> <NODE><VALUE ATTRIBUTE="FALSE">Value 4</VALUE></NODE> <NODE><VALUE ATTRIBUTE="TRUE">Value 5</VALUE></NODE> <NODE><VALUE ATTRIBUTE="FALSE">Value 6</VALUE></NODE> </ROOT> What I actually get: <ROOT><NODE><VALUE ATTRIBUTE="FALSE">Value 1</VALUE></NODE> <NODE><VALUE ATTRIBUTE="FALSE">Value 2</VALUE></NODE> <NODE><VALUE ATTRIBUTE="FALSE">Value 3</VALUE></NODE> <NODE><VALUE ATTRIBUTE="FALSE">Value 4</VALUE></NODE> <NODE><VALUE ATTRIBUTE="FALSE">Value 5</VALUE></NODE> <NODE><VALUE ATTRIBUTE="FALSE">Value 6</VALUE></NODE> </ROOT> Because in C# FALSE value is stayed at last position in foreach loop The question is: how do I do to assign the correct values of my attribute. Thanks

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