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Articles indexed in March 2010

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  • Figuring out the required MaxReceivedMessageSize in WCF with NetTcpBinding

    - by Flo
    I'm using NetTcpBinding in WCF and i want to send a Stream which does not exceed the size of 1 MB. I have set the MaxReceivedMessageSize to a really high number and that works fine of course. But I am curious: Does setting the MaxReceivedMessageSize to a very hight number have any (negative) impact or would it be useful to set it just above the size I actually want to send/receive? What kind of overhead can I expect when using the NetTcpBinding to transfer a stream? Meaning: when I send a stream of 1 MB, how large does my MaxReceivedMessageSize has to be?

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  • help installing odfWeave

    - by Andreas
    This is not a programming question per se - but I hope someone can help: I can't install odfWeave - it looks like the problem is with the package XML - which i can't install either. checking for xml2-config... no Cannot find xml2-config ERROR: configuration failed for package ‘XML’ * removing ‘/home/andreas/R/i486-pc-linux-gnu-library/2.10/XML’ * installing source package ‘odfWeave’ ... ** R ** inst ** preparing package for lazy loading Warning in library(pkg, character.only = TRUE, logical.return = TRUE, lib.loc = lib.loc) : there is no package called 'XML' Error : package 'XML' could not be loaded ERROR: lazy loading failed for package ‘odfWeave’ * removing ‘/home/andreas/R/i486-pc-linux-gnu-library/2.10/odfWeave’ Any help much appreciated System: ubuntu 9.04

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  • Download binary file From SQL Server 2000

    - by kareemsaad
    I inserted binary files (images, PDF, videos..) and I want to retrieve this file to download it. I used generic handler page as this public void ProcessRequest (HttpContext context) { using (System.Data.SqlClient.SqlConnection con = Connection.GetConnection()) { String Sql = "Select BinaryData From ProductsDownload Where Product_Id = @Product_Id"; SqlCommand com = new SqlCommand(Sql, con); com.CommandType = System.Data.CommandType.Text; com.Parameters.Add(Parameter.NewInt("@Product_Id", context.Request.QueryString["Product_Id"].ToString())); SqlDataReader dr = com.ExecuteReader(); if (dr.Read() && dr != null) { Byte[] bytes; bytes = Encoding.UTF8.GetBytes(String.Empty); bytes = (Byte[])dr["BinaryData"]; context.Response.BinaryWrite(bytes); dr.Close(); } } } and this is my table CREATE TABLE [ProductsDownload] ( [ID] [bigint] IDENTITY (1, 1) NOT NULL , [Product_Id] [int] NULL , [Type_Id] [int] NULL , [Name] [nvarchar] (200) COLLATE Arabic_CI_AS NULL , [MIME] [varchar] (50) COLLATE Arabic_CI_AS NULL , [BinaryData] [varbinary] (4000) NULL , [Description] [nvarchar] (500) COLLATE Arabic_CI_AS NULL , [Add_Date] [datetime] NULL , CONSTRAINT [PK_ProductsDownload] PRIMARY KEY CLUSTERED ( [ID] ) ON [PRIMARY] , CONSTRAINT [FK_ProductsDownload_DownloadTypes] FOREIGN KEY ( [Type_Id] ) REFERENCES [DownloadTypes] ( [ID] ) ON DELETE CASCADE ON UPDATE CASCADE , CONSTRAINT [FK_ProductsDownload_Product] FOREIGN KEY ( [Product_Id] ) REFERENCES [Product] ( [Product_Id] ) ON DELETE CASCADE ON UPDATE CASCADE ) ON [PRIMARY] GO And use data list has label for file name and button to download file as <asp:DataList ID="DataList5" runat="server" DataSource='<%#GetData(Convert.ToString(Eval("Product_Id")))%>' RepeatColumns="1" RepeatLayout="Flow"> <ItemTemplate> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td class="spc_tab_hed_bg spc_hed_txt lm5 tm2 bm3"> <asp:Label ID="LblType" runat="server" Text='<%# Eval("TypeName", "{0}") %>'></asp:Label> </td> <td width="380" class="spc_tab_hed_bg"> &nbsp; </td> </tr> <tr> <td align="left" class="lm5 tm2 bm3"> <asp:Label ID="LblData" runat="server" Text='<%# Eval("Name", "{0}") %>'></asp:Label> </td> <td align="center" class=" tm2 bm3"> <a href='<%# "DownloadFile.aspx?Product_Id=" + DataBinder.Eval(Container.DataItem,"Product_Id") %>' > <img src="images/downloads_ht.jpg" width="11" height="11" border="0" /> </a> <%--<asp:ImageButton ID="ImageButton1" ImageUrl="images/downloads_ht.jpg" runat="server" OnClick="ImageButton1_Click1" />--%> </td> </tr> </table> </ItemTemplate> </asp:DataList> I tried more to solve this problem but I cannot please if any one has solve for this proplem please sent me thank you kareem saad programmer MCTS,MCPD Toshiba Company Egypt

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  • Spring Transaction Manager

    - by cedric
    Hi. I have a j2ee application running on spring framework. I am implementing a transaction manager with AOP. It works fine. When an exception occurs in my method it is detected by my AOP configuration and rolls back the changes in the DB. But the problem is the code where you expect the error should not be surrounded with try-catch. When I suround it with try-catch it won't roll-back. But I need to do some stuffs like logging whenever there are errors and the only place I can think of placing it is in the catch block.

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  • Why is XmlSerializer so hard to use?

    - by mafutrct
    I imagine to use XML serialization like this: class Foo { public Foo (string name) { Name1 = name; Name2 = name; } [XmlInclude] public string Name1 { get; private set; } [XmlInclude] private string Name2; } StreamWriter wr = new StreamWriter("path.xml"); new XmlSerializer<Foo>().Serialize (wr, new Foo ("me")); But this does not work at all: XmlSerializer is not generic. I have to cast from and to object on (de)serialization. Every property has to be fully public. Why aren't we just using Reflection to access private setters? Private fields cannot be serialized. I'd like to decorate private fields with an attribute to have XmlSerializer include them. Did I miss something and XmlSerializer is actually offering the described possibilities? Are there alternate serializers to XML that handle these cases more sophisticatedly? If not: We're in 2010 after all, and .NET has been around for many years. XML serialization is often used, totally standard and should be really easy to perform. Or is my understanding possibly wrong and XML serialization ought not to expose the described features for a good reason? (Feel free to adjust caption or tags. If this should be CW, please just drop a note.)

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  • String comparison in Numpy

    - by Morgoth
    In the following example In [8]: import numpy as np In [9]: strings = np.array(['hello ', 'world '], dtype='|S10') In [10]: strings == 'hello' Out[10]: array([False, False], dtype=bool) The comparison fails because of the whitespace. Is there a Numpy built-in function that does the equivalent of In [12]: np.array([x.strip()=='hello' for x in strings]) Out[12]: array([ True, False], dtype=bool) which does give the correct result?

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  • Objective C -- passing array literal to a method

    - by morgancodes
    This seems to work (compiler doesn't complain, anyway): float adsr[4] = {0,1.0/PULSE_SPEED, 0,1}; [sequence setBaseADSR:adsr]; but I want to make it more concise and do this: [sequence setBaseADSR:{0,1.0/PULSE_SPEED, 0,1}]; How do I do it? In javascript, I'd call stuff in the brackets an "array literal". Not sure if C languages have the same concept or terminology though.

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  • Exporting Stata results

    - by Max M.
    I'm sure this is an issue anyone who uses Stata for publications or reports has run into: how do you conveniently export your output to something that can be parsed by a scripting language or Excel? There are a few ADO files that to this for specific commands (try findit tabout or findit outreg2). But what about exporting the output of the table command? Or the results of an anova? I'd love to hear about how Stata users address this problem for either specific commands or in general.

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  • How to make a loop over all keys of a HashMap?

    - by Roman
    I try to do it in the following way: public String getValue(String service, String parameter) { String inputKey = service + ":" + parameter; Set keys = name2value.keySet(); Iterator itr = keys.iterator(); while (itr.hasNext()) { if (inputKey.equal(itr.next())) { return name2value.get(inputKey); } return ""; } } And I get an error message: cannot find symbol method.equal(java.lang.Object). I think it is because itr.next() is not considered as a string. How can I solve this problem? I tried to replace Set keys by Set<String> keys. It did not help.

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  • Multiple indexes for a Java Collection - most basic solution?

    - by chris_l
    Hi, I'm looking for the most basic solution to create multiple indexes on a Java Collection. Required functionality: When a Value is removed, all index entries associated with that value must be removed. Index lookup must be faster than linear search (at least as fast as a TreeMap). Side conditions: It should ideally work with JavaSE (6.0) alone - no extra libraries, if possible. If necessary, then only small (not something like Lucene), common and well tested libraries. No database! Of course, I could write a class that manages multiple Maps myself. But I'd like to know, if it can be done without - while still getting a simple usage similar to using a single indexed java.util.Map. Thanks, Chris

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  • Can not access response.body inside after filter block in Sinatra 1.0

    - by Petr Vostrel
    I'm struggling with a strange issue. According to http://github.com/sinatra/sinatra (secion Filters) a response object is available in after filter blocks in Sinatra 1.0. However the response.status is correctly accessible, I can not see non-empty response.body from my routes inside after filter. I have this rackup file: config.ru require 'app' run TestApp Then Sinatra 1.0.b gem installed using: gem install --pre sinatra And this is my tiny app with a single route: app.rb require 'rubygems' require 'sinatra/base' class TestApp < Sinatra::Base set :root, File.dirname(__FILE__) get '/test' do 'Some response' end after do halt 500 if response.empty? # used 500 just for illustation end end And now, I would like to access the response inside the after filter. When I run this app and access /test URL, I got a 500 response as if the response is empty, but the response clearly is 'Some response'. Along with my request to /test, a separate request to /favicon.ico is issued by the browser and that returns 404 as there is no route nor a static file. But I would expect the 500 status to be returned as the response should be empty. In console, I can see that within the after filter, the response to /favicon.ico is something like 'Not found' and response to /test really is empty even though there is response returned by the route. What do I miss?

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  • Can T-SQL function return user-defined table type?

    - by abatishchev
    I have my own type: CREATE TYPE MyType AS TABLE ( foo INT ) and a function receiving it as a parameter: CREATE FUNCTION Test ( @in MyType READONLY ) RETURNS @return MyType AS ... can it return MyType or only TABLE repeating MyType's structure: CREATE FUNCTION Test ( @in MyType READONLY ) RETURNS @return TABLE (foo INT) AS ... ?

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  • XNA Class Design with Structs as Properties and issues because they are value types and not referenc

    - by Nate Bross
    I'm wondering how you'd recommend designin a class, given the fact that XNA Framework uses Struct all over the place? For example, a spite class, which may require a Vector2 and a Rectangle (both defined as Struct) to be accessed outside of the class. The issue come in when you try to write code like this: class Item { public Vetor2 Position {get; set;} public Item() { Position = new Vector2(5,5); } } Item i = new Item(); i.Positon.X = 20; // fails with error 'Cannot modify the return value of Item because it is not a variable.' // you must write code like this var pos = i.Position; pos.X++; i.Position = pos; The second option compiles and works, but it is just butt ugly. Is there a better way?

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  • SQL Server: Must numbers all be specified with latin numeral digits?

    - by Ian Boyd
    Does SQL server expect numbers to be specified with digits from the latin alphabet, e.g.: 0123456789 Is it valid to give SQL Server digits in other alphabets? Rosetta Stone: Latin: 01234567890 Arabic: ?????????? Bengali: ?????????? i know that the client (ADO) will convert 8-bit strings to 16-bit unicode strings using the current culture. But the client is also converting numbers to strings using their current culture, e.g.: SELECT * FROM Inventory WHERE Quantity > ???,?? Which throws SQL Server for fits. i know that the server/database has it's defined code page and locale, but that is for strings. Will SQL Server interpret numbers using the active (or per-login specified) locale, or must all numeric values be specifid with latin numeral digits?

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  • How can I get a call stack listing in Perl?

    - by slashmais
    Is there a way I can access (for printout) a list of sub + module to arbitrary depth of sub-calls preceding a current position in a Perl script? I need to make changes to some Perl modules (.pm's). The workflow is initiated from a web-page thru a cgi-script, passing input through several modules/objects ending in the module where I need to use the data. Somewhere along the line the data got changed and I need to find out where.

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  • Android Release Version and "Waiting for Debugger"

    - by Tom Richards
    I know this has been asked before but I still don't have a solution. My first app: developed and debugged on my moto droid and then followed all the release steps, (exported from Eclipse, using my key to sign) including removing the debug in the manifest xml. I copied the resulting apk to the droid, disconnected the usb and installed it by double clicking on the file using Astro. I get the "Waiting for Debugger" message like when I am debugging but it never goes away. Doing something real stupid I know but I can't figure it out. Any help would be appreciated. Thanks, Tom

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  • Could not laod file or assembly ‘System.Web.Silverlight’

    - by Adam Berent
    I really need some help with this as I have been trying to fix this for months and I can't figure it out. I run an online chess site written in Silverlight 3.0 The architecture is Silverlight Client connecting to a WCF service that reads and writes data to a SQL Server database. It is hosted on Godaddy, Once every so often I get the following error: Could not laod file or assembly ‘System.Web.Silverlight’ or one of its dependencies. The system cannot find the path specified. If I leave it alone it will fix itself after a few hours, however usually I just make a new publish of my application and it goes away. Also all the pages in the solution get this message not just the Silverlight application. So I have an aspx page with top ranks that does not use Silverlight but is in the same solution it also gets the same error. Its almost like the whole site dies. This does not seem like a huge issue but it makes going on vacation hard since my site can go down at any time I am away. Also this seems to happen the most when I am sleeping so I often don't get to fixing it until I have already lost hours of potential logins. If you have had the same issue please, please help!

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  • ASP.NET AJAX postback and jQuery

    - by Echilon
    I have a Textbox, a LinkButton and a RadioButtonList inside an UpdatePanel. When the button is clicked, the UpdatePanel shows matching items in the radiobuttonlist. This works fine, but I now need to make the same happen OnKeyDown on the TextBox. I'm trying to cancel all AJAX requests in progress but not having much luck. Firstly, on every keypress the UpdatePanel posts back, so only one letter can be changed at a time. Secondly, the textbox loses focus on postback. I need to show the list as normal, but OnKeyDown as well as when the button is pressed. This is what I have (control IDs shortened) $('#textBoxId').live('keydown', function(e) { if((e.keyCode >= 47 && e.keyCode <= 90) || e.keyCode == 13) { Sys.WebForms.PageRequestManager.getInstance().abortPostBack(); $('#buttonId').click(); $('#textBoxId').focus(); } }); Thanks for any insight.

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  • paginate the class

    - by small
    please help me with pagination of this method my method is this one controller # def show @topic = Topic.find(params[:id]) @posts = @topic.posts.find(:all ,:order=> 'id') end views # %div{:style=>"margin: 0 auto;"} %table.sortable.style2{:cellpadding=>5} %thead %tr %td{:width => "25%",:align => "center",:style => "font-weight: bold;"}Posted By %td{:width => "75%",:style => "font-weight: bold;"}Comments %tbody - for post in @posts %tr %td{:align => "center"} &nbsp %div{:width=>"5px" , :style=>"border: 1px solid rgb(232, 232, 232);background-color: rgb(248, 248, 248);width: 60px; height:60px;" } - if post.posted_by.image = image_tag(post.posted_by.image.public_filename(),:width => "60px", :height => "60px",:align=>"center") %div{:style => "font-weight: bold; font-style: italic;"} = post.posted_by ? post.posted_by.firstname : "<em>Unknown User</em>" %br %div{:style => "font-style: italic;"} Posted on = post.created_at.strftime('%d of %B %Y ') = post.created_at.strftime('at %H:%M') %td{:valign => "top"} =post.body

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  • What URL scheme would be better for "nested" resources in a RESTful application?

    - by Luke404
    Let's say we want a RESTful web service to manage some logically nested resources, where each instance of resource 'B' is logically contained by an instance of resource 'A'. The first example that comes to mind, working as a sysadmin, is email accounts and their domains: [email protected] [email protected] [email protected] ... What URL scheme would you suggest? At first I'd try: /domain/[domainname] /domain/[domainname]/account/[accountname] is that in line with RESTful principles? or should I go with something like: /domain/[domainname] /account/[account@domainname]/ or anything else?

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