type parameter - Page 150

I'm getting this exception : Unresolved compilation problems

- by Stephan

I get this exception after i removed from my project the jars (pdfbox ,bouncycastle etc) and moved them to another folder but i included them in the build path ... at the first line eclipse shows this error( the constructor PDFParser(InputStream) refers to missing type InputStream) -altought FileInputStream is extended from InputStream- and i don't know why? FileInputStream in = new FileInputStream(path); PDFParser parser = new PDFParser(in); PDFTextStripper textStripper = new PDFTextStripper(); parser.parse(); String text = textStripper.getText(new PDDocument(parser.getDocument())); any ideas? ** Exception in thread "AWT-EventQueue-0" java.lang.Error: Unresolved compilation problems: The constructor PDFParser(InputStream) refers to the missing type InputStream The constructor PDFTextStripper() refers to the missing type IOException The method parse() from the type PDFParser refers to the missing type IOException The method getText(PDDocument) from the type PDFTextStripper refers to the missing type IOException The method getDocument() from the type PDFParser refers to the missing type IOException The method getDocument() from the type PDFParser refers to the missing type IOException The method close() from the type COSDocument refers to the missing type IOException **

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Provide a URI as a parameter for an ODBC or OleDB provider connection string?

- by womp

Is there any way of specifying a URI (rather than a physical path) as the "Data Source" parameter in an OleDB connection string, or the "Dbq" parameter in an ODBC connection string, such that the default ADO.Net providers will work with it? I've tried file://, and it's a no go, so I just wanted to confirm whether or not this is possible. I'm guessing not, but any confirmation or documentation links would be appreciated.

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How to develop asp.net web service to create the web method which can take the parameter of type win

- by Shailesh Jaiswal

I am developing asp.net web service. I am developing this web service so that OPC ( OLE for process control) client application can use it. In this web service I am using the built-in functions provided by the namespaces using OPC, using OPCDA, using OPCDA.NET. I have also added the namespace using System.Windows.Forms in this web service so that I can use the windows form control. In that we service I have created on web method which takes the parameter of type windows form control as given below. public void getOPCServerItems(TreeView tvServerItems, ListView lvBranchItems) { ArrayList ArrlstObj = new ArrayList(); ItemShowTreeList = OpcSrv.ShowBrowseTreeList(tvServerItems, lvBranchItems); ItemShowTreeList.BrowseModeOneLevel = true; // browse hierachy levels when selected. (default) ItemShowTreeList.Show(OpcSrv.ServerName); } In the above web method I need to pass the values to the built-in function ShowBrowseTreeList() (found in OPC, OPCDA, OPCDA.NET namespaces). This function takes the two parameter of windows form control type. These parameters are Treeview & ListView control of the windows form. In the above web method ShowBrowseTreeList() method automatically create the treeview & listview structure of the available items. Now as I am consuming the web service so I need to pass the values to the webmethod getOPCServerItems(). But as I my consuming application is asp.net application there is no such windows form control. In asp.net application there are also & control. I want to display The data returned in these asp.net controls rather than windows form control. I am not getting the way what should I need to do or how should I pass the values form my client application to this web service ? In the above method getOPCServerItems() when I use the parameter of type treeview & listview it generate s error "Cannot serialize member System.ComponentModel.Component.Site of type System.ComponentModel.ISite because it is an interface.". Can you provide me the the way In which I can write the above web method & how should I pass parameter to the Treeview & Listview control (windows form control) from my asp.net application ? which controls I should use to pass parameters ? Is there any need to do any type of casting ? Can you provide me the the code for above web method so that I can resolve the above issue ?

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Opening Excel file in a SharePoint document library from VSTO with specified credentials

- by Saab

I'm trying to open a workbook from within Excel. The Excel file is located on a SharePoint server, within a Document Library. I use the following code to open the workbook. newWorkbook = globalsThisAddInApplication.Workbooks.Open( workbookUrl, Type.Missing, false, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing); When I do this the user has to enter his credentials (username/password dialog). I'm already storing the user credentials, and I want them to be used when the file is opened.

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Why htmlspecialchars_decode in PHP does not have the charset parameter as in its counterpart?

- by Lawrence Lau

There is a charset parameter in htmlspecialchars but the decode version does not have it. In comparison to the similar htmlentities, the encode and decode functions both have the charset parameter. So I can't choose what charset I am decoding back to?

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asp mvc: how to pass parameter to controller using jquery api?

- by Grayson Mitchell

I am following the following tutorial (http://www.highoncoding.com/Articles/642_Creating_a_Stock_Widget_in_ASP_NET_MVC_Application.aspx) on using ajax to render a partial form , but in this example parameters are not passed, and I have not been able to work out how to do it... This code works with no parameter function GetDetails() { $("#divDetails").load('Details'); } This is my attempt to add a parameter, but does not work (cant find action) function GetDetails() { $("#divDetails").load('Details?Id=20'); }

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Should I use Enumeration or Class stereotype in UML to represent a type directory table?

- by Ivan

Let's take 2 UML class model entities: One represents an actual Order and another represents an Orede Type. Any Order corresponds to one Type. A 2-way-naviglabe many Orders to one Type relation is meant. Order Type instances are, for example, "Request availability", "Request price", "Preorder", "Buy", "Cancel", "Request support", etc. Order Types are to be addable and editable in the resulting application. Should I model Order Type as Class or as Enumeration? From the data perspective I can't see the difference actually.

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Best way to test if a generic type is a string? (c#)

- by Rex M

I have a generic class that should allow any type, primitive or otherwise. The only problem with this is using default(T). When you call default on a value type or a string, it initializes it to a reasonable value (such as empty string). When you call default(T) on an object, it returns null. For various reasons we need to ensure that if it is not a primitive type, then we will have a default instance of the type, not null. Here is attempt 1: T createDefault() { if(typeof(T).IsValueType) { return default(T); } else { return Activator.CreateInstance<T>(); } } Problem - string is not a value type, but it does not have a parameterless constructor. So, the current solution is: T createDefault() { if(typeof(T).IsValueType || typeof(T).FullName == "System.String") { return default(T); } else { return Activator.CreateInstance<T>(); } } But this feels like a kludge. Is there a nicer way to handle the string case?

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WCF - In streaming endpoints, do all operation contracts require a stream as a return or parameter f

- by Tri Q

Hi all, I wondering if in the same endpoint, which has been set to streamed transport mode, is it required to have all operation contracts in this service to have a stream in the parameter or as the return type for this service to work? In short: Can streamed enabled endpoint contain operation contracts that do not have stream as a parameter or as a return type?

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Why do encodeXxx methods in UIComponent accept FacesContext parameter?

- by Roman

I haven't ever before created custom components in JSF so I've noticed only now that methods like encodeBegin(), encodeEnd() etc accept FacesContext parameter. FacesContext instance can usually be received with FacesContext.getCurrentInstance(). So, I wonder whether these methods have FacesContext parameter just for convenience or some different objects can be passed there (maybe from external resources..). If the latter is possible then could you give an example pls.

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Example of when the culture parameter of string.Equals (c#) actually makes a difference?

- by dru-zod

I don’t fully understand the second parameter of string.Equals, and this is because I can’t find any examples of when it would actually make a difference. For example, the example given here is the same, regardless of the value of the second parameter (aside from IgnoreCase): http://msdn.microsoft.com/en-us/library/c64xh8f9.aspx I am just talking about the values StringComparison.CurrentCulture, InvariantCulture, or Ordinal. I can understand the difference between these and their IgnoreCase equivalents.

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How to I configure open_basedir parameter under my Centos VPS?

- by deltanovember

The parameter can be seen here http://wordswithfriends.net/test.php open_basedir /var/www/vhosts/wor.wordswithfriends.net/wordswithfriends.net/:/tmp I'm trying to add PHP pear directories /var/www/vhosts/wor.wordswithfriends.net/conf is as follows -rw-r----- 1 root apache 6461 Jan 25 08:56 12959674170.16899500_httpd.include -rw-r----- 1 root apache 6461 Jan 31 06:52 12960111810.31860800_httpd.include -rw-r----- 1 root apache 6532 Jan 31 06:55 12964785250.54523600_httpd.include -rw-r----- 1 root apache 6532 Jan 31 07:01 12964788880.47252600_httpd.include -rw-r----- 1 root apache 6532 Jan 31 15:54 12965108850.92819600_httpd.include -rw-r----- 1 root apache 6652 Jan 31 21:32 12965206700.32285200_httpd.include Currently configured as follows grep base 12965206700.32285200_httpd.include php_admin_value open_basedir /var/www/vhosts/wor.wordswithfriends.net/httpdocs/:/tmp/:/usr/share/pear/:/local/PEAR/ php_admin_value open_basedir /var/www/vhosts/wor.wordswithfriends.net/httpdocs/:/tmp/:/usr/share/pear/:/local/PEAR/ php_admin_value open_basedir /var/www/vhosts/wor.wordswithfriends.net/httpdocs/:/tmp/:/usr/share/pear/:/local/PEAR/ php_admin_value open_basedir /var/www/vhosts/wor.wordswithfriends.net/httpdocs/:/tmp/:/usr/share/pear/:/local/PEAR/ Configured vhost.conf as follows <Directory /var/www/vhosts/wor.wordswithfriends.net/wordswithfriends.net> <IfModule sapi_apache2.c> php_admin_flag engine on php_admin_flag safe_mode off php_admin_value open_basedir "/var/www/vhosts/wor.wordswithfriends.net:/tmp:/usr/share/pear/local/PEAR" </IfModule> <IfModule mod_php5.c> php_admin_flag engine on php_admin_flag safe_mode off php_admin_value open_basedir "/var/www/vhosts/wor.wordswithfriends.net:/tmp:/usr/share/pear:/local/PEAR" </IfModule> </Directory> Restarted apache and the parameter is still the same. I'm not sure why my pear directories are not showing up. I'm using Plesk. Any help appreciated

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Why does this code generate an error? [closed]

- by user559601

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how can i initialize an stored procedures IN parameter to a default value?

- by Ayyappan.Anbalagan

when this stored procedure executes without this parameter, stored procedure should use the default value and if this parameter is assigned to a value, stored procedure should execute by assigned value.

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Implicit constructor available for all types derived from Base excepted the current type?

- by Vincent

The following code sum up my problem : template<class Parameter> class Base {}; template<class Parameter1, class Parameter2, class Parameter> class Derived1 : public Base<Parameter> { }; template<class Parameter1, class Parameter2, class Parameter> class Derived2 : public Base<Parameter> { public : // Copy constructor Derived2(const Derived2& x); // An EXPLICIT constructor that does a special conversion for a Derived2 // with other template parameters template<class OtherParameter1, class OtherParameter2, class OtherParameter> explicit Derived2( const Derived2<OtherParameter1, OtherParameter2, OtherParameter>& x ); // Now the problem : I want an IMPLICIT constructor that will work for every // type derived from Base EXCEPT // Derived2<OtherParameter1, OtherParameter2, OtherParameter> template<class Type, class = typename std::enable_if</* SOMETHING */>::type> Derived2(const Type& x); }; How to restrict an implicit constructor to all classes derived from the parent class excepted the current class whatever its template parameters, considering that I already have an explicit constructor as in the example code ? EDIT : For the implicit constructor from Base, I can obviously write : template<class OtherParameter> Derived2(const Base<OtherParameter>& x); But in that case, do I have the guaranty that the compiler will not use this constructor as an implicit constructor for Derived2<OtherParameter1, OtherParameter2, OtherParameter> ? EDIT2: Here I have a test : (LWS here : http://liveworkspace.org/code/cd423fb44fb4c97bc3b843732d837abc) #include <iostream> template<typename Type> class Base {}; template<typename Type> class Other : public Base<Type> {}; template<typename Type> class Derived : public Base<Type> { public: Derived() {std::cout<<"empty"<<std::endl;} Derived(const Derived<Type>& x) {std::cout<<"copy"<<std::endl;} template<typename OtherType> explicit Derived(const Derived<OtherType>& x) {std::cout<<"explicit"<<std::endl;} template<typename OtherType> Derived(const Base<OtherType>& x) {std::cout<<"implicit"<<std::endl;} }; int main() { Other<int> other0; Other<double> other1; std::cout<<"1 = "; Derived<int> dint1; // <- empty std::cout<<"2 = "; Derived<int> dint2; // <- empty std::cout<<"3 = "; Derived<double> ddouble; // <- empty std::cout<<"4 = "; Derived<double> ddouble1(ddouble); // <- copy std::cout<<"5 = "; Derived<double> ddouble2(dint1); // <- explicit std::cout<<"6 = "; ddouble = other0; // <- implicit std::cout<<"7 = "; ddouble = other1; // <- implicit std::cout<<"8 = "; ddouble = ddouble2; // <- nothing (normal : default assignment) std::cout<<"\n9 = "; ddouble = Derived<double>(dint1); // <- explicit std::cout<<"10 = "; ddouble = dint2; // <- implicit : WHY ?!?! return 0; } The last line worry me. Is it ok with the C++ standard ? Is it a bug of g++ ?

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SQL Server 2008 > how to get service startup parameter values by query?

- by Sean Ochoa

Is it possible to query for the SQL Server 2008 service startup parameter values using T-SQL? I'm specifically looking for the -g parameter that indicates how much memory that SQL Server will leave available for memory allocations within the SQL Server process, but outside the SQL Server memory pool [msdn reference].

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what is the most elegant way in ruby to remove a parameter from url?

- by dimus

I would like to take out a parameter from url by it's name without knowing if it is the first, middle or last parameter and reassemble url again. I guess it is not that hard to write something on my own using CGI or URI, but I imagine such functionality exists already. Any suggestions? in: http://example.com/path?param1=one&param2=2&param3=something3 out: http://example.com/path?param2=2&param3=something3

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What exactly does a self-describing type in .Net mean?

- by tzup

Given this MSDN article, we learn that the Common Type System in .Net has this classification of reference types: "Reference types can be self-describing types, pointer types, or interface types. The type of a reference type can be determined from values of self-describing types. Self-describing types are further split into arrays and class types." So an array, for instance, is a self-describing type because we can determine it's type from its values? How? Is that it, or is there more to this definition?

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A file is being http posted, how can I reference the parameter by index?

- by Blankman

An XML file is being posted to a url that my spring mvc is responding to. In .NET, I could do this: request.Form[0] request.Form["abc"] or request.QueryString[0] request.QueryString["some_key"] Now with spring/servlets it seems I can only do this: request.getParameter("some_key") or get all the names or values. When someone is posting a file to a url, using http post, won't this be just a single request parameter then? Can I get the parameter using index with servlets?

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a function that returns a random number that is a multiple of 3 between 0 and the function's non-negative integer parameter n

- by martin

I need to write a function called multipleOf3 that returns a random number that is a multiple of 3 between 0 and the function's non-negative integer parameter n and here is the result i want [Note: No number returned can be greater than the value of the parameter n] Examples: multipleOf3(0) -- 0 multipleOf3(1) -- 0 multipleOf3(2) -- 0 multipleOf3(3) -- 0 or 3 multipleOf3(20) -- 0 or 3 or 6 or 9 or 12 or 15 or 18

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What would cause linq to sql to think that a parameter is nullable?

- by chobo2

Hi I have a stored procedure that declares a input parameter @BatchNumber uniqueidentifier This field in the table is set to not allow nullables. When I drag in the stored procedure and it hooks everything up it says the parameter is nullable. I don't understand why. Is this normal for it to think that the parameters are nullable?

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How do I get a Type[] with arguments from a MethodCallExpression?

- by Tomas Lycken

I'm reflecting over a class (in a unit test of said class) to make sure its members have all the required attributes. To do so, I've constructed a couple of helpers, that take an Expression as an argument. I do some checks for it, and take slightly different actions depending on what type of Expression it is, but it's basically the same. Now, my problem is that I have several methods with the same name (but different signatures), and the following code throws an AmbiguousMatchException: // TOnType is a type argument for the type where the method is declared // mce is the MethodCallExpression var m = typeof(TOnType).GetMethod(mce.Method.Name); Now, if I could add an array of Type[] with the types of the arguments to this method as a second parameter to .GetMethod(), the problem would be solved. But how do I find this Type[] array that I need? I have cast the Expression<Func<...>> to an Expression, and then to a MethodCallExpression, and in this method the contents of <...> is not known.

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what does positional and named parameter in a query mean?

- by ajsie

here we got a positional parameter: SELECT u FROM ForumUser u WHERE u.id = ?1 and here a named parameter: SELECT u FROM ForumUser u WHERE u.username = :name this is DQL (doctrine query language) but i think the concept is the same. could someone please explain what these mean and do?

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How to apply %% to a variable in a script with input parameter?

- by murxx

Hi, I asked a question yesterday about how to manage to get %% around a variable without getting the evaluation. Well, the thing is, it does not work that way in my case... I have a .bat file which gets an input parameter. Later on I want to use the value of this input parameter and put %...% around, like: call script.bat testValue script.bat: set inputPar=%1 set newValue=%%inputPar%% Now I get: echo %inputPar% testValue echo %newValue% %inputPar% But I would like to get: echo %newValue% %testValue% Is that somehow possible?

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Using Lazy<T> and abstract wrapper class to lazy-load complex system parameters

- by DigiMortal

.NET Framework 4.0 introduced new class called Lazy<T> and I wrote blog post about it: .Net Framework 4.0: Using System.Lazy<T>. One thing is annoying for me – we have to keep lazy loaded value and its value loader as separate things. In this posting I will introduce you my Lazy<T> wrapper for complex to get system parameters that uses template method to keep lazy value loader in parameter class. Problem with original implementation Here’s the sample code that shows you how Lazy<T> is usually used. This is just sample code, don’t focus on the fact that this is dummy console application. class Program { static void Main(string[] args) { var temperature = new Lazy<int>(LoadMinimalTemperature); Console.WriteLine("Minimal room temperature: " + temperature.Value); Console.ReadLine(); } protected static int LoadMinimalTemperature() { var returnValue = 0; // Do complex stuff here return true; } } The problem is that our class with many lazy loaded properties will grow messy if it has all value loading code inside it. This code may be complex for more than one parameter and in this case it is better to use separate class for this parameter. Defining base class for parameters As a first step I will define base class for all lazy-loaded parameters. This class is wrapper around Lazy<T> and it also offers one template method that parameter classes have to override to provide loaded data. public abstract class LazyParameter<T> { private Lazy<T> _lazyParam; public LazyParameter() { _lazyParam = new Lazy<T>(Load); } protected abstract T Load(); public T Value { get { return _lazyParam.Value; } } } It is also possible to extend Lazy<T> but I don’t prefer to do it as Lazy<T> has six constructors we have to take care of. Also I don’t like to expose Lazy<T> public interface to users of my parameter classes. Creating parameter class Now it’s time to create our first parameter class. Notice how few stuff we have in this class besides overridden Load() method. public class MinimalRoomTemperature : LazyParameter<int> { protected override int Load() { var returnValue = 0; // Do complex stuff here return returnValue; } } Using parameter class is simple. Here’s my test code. class Program { static void Main(string[] args) { var parameter = new MinimalRoomTemperature(); Console.WriteLine("Minimal room temperature: " + parameter.Value); Console.ReadLine(); } } Conclusion Lazy<T> is useful class that you usually don’t want to use outside from API-s. I like this class but I don’t like when people are using this class directly in application code. In this posting I showed you how to use Lazy<T> with wrapper class to get complex parameter loading code out from classes that use this parameter. We ended up with generic base class for parameters that you can also use as base for other similar classes (you have to find better name to base class in this case).

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- by Stephan

- by womp

- by Shailesh Jaiswal

- by Saab

- by Lawrence Lau

- by Grayson Mitchell

- by Ivan

- by Rex M

- by Tri Q

- by Roman

- by dru-zod

- by deltanovember

- by user559601

- by Ayyappan.Anbalagan

- by Vincent

- by Sean Ochoa

- by dimus

- by tzup

- by Blankman

- by martin

- by chobo2

- by Tomas Lycken

- by ajsie

- by murxx

- by DigiMortal

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