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• How to use Enum as NamedQuery parameters in JPA

  - by n002213f

  I have an Entity with a enum attribute and a couple on NamedQueries. One of these NamedQueries has a the enum attribute as a parameter i.e. SELECT m FROM Message m WHERE status = :status When i try to ru n the query i get the following error; Caused by: java.lang.IllegalArgumentException: You have attempted to set a value of type class my.package.Status for parameter status with expected type of class my.package.Status from query string SELECT m FROM Message m WHERE m.status = :status. I'm using Toplink How is this? How would i make JPA happy?

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• Cannot add Authorization field to HttpsUrlConnection in order to complete Basic authentication

  - by ES

  Hi, I'm using the Sun API HttpsURLConnection class, and have been trying for a day now to get it to send a simple request: URL url = new URL("https://thirdpartyserver.com/somelocation"); connection = (HttpsURLConnection)url.openConnection(); connection.setDoOutput(true); connection.setRequestMethod("POST"); if (doAuthorization) { Base64Converter converter = new Base64Converter(); connection.setRequestProperty("Authorization", "Basic " + converter.encode("username:password")); } OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream()); writer.write("param1=100&param2=hello"); writer.flush(); writer.close(); I keep getting 401 from the third part server. When I look at the connection through the debugger, the method shows up as GET even though I set it to POST; the collection of request properties shows up as null. If I print the values out, the method shows up as POST, but the request parameters collection is still empty. I would love to be able to print the request and understand what's going on, but I could not figure out how to print the content of an output buffer. Any ideas? Thanks! ES

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• CommandBinding CanExecute always null

  - by developer

  Hi All, I am using CommandBinding to display visibility of a button. Below is my code <UserControl.CommandBindings> <CommandBinding Command="{x:Static local:AttendeePanel.LaunchAttEditor}" Executed="LaunchAttEditor_Executed" CanExecute="CanCreateProfile"/> </UserControl.CommandBindings> <Button Content="Create Profile" Command="local:LaunchEditor" CommandParameter="{Binding Profile}" Name="BtnCreate"> My problem is that CanExecute method always gets null as parameter even though I am binding the parameter to Profile. Is there a way I can set Data Context? or is this because the canexecute runs before data load?

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• CComPtr pass by reference

  - by Mahesh

  I have a situation where I need to pass a CComPtr<IXmlReader> to a function by reference. Does the called parameter takes the ownership from the callee parameter (or) the reference count is increased? void foo( CComPtr<IXmlReader> & pReader ) { // There is no reassignment of the CComPtr. // Just call the IXmlReader methods. } CComPtr<IXmlReader> pReader; foo( pReader ); // Is pReader still valid after the function return ? Thanks.

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• ASP.NET MVC 2 RC2 Routing - How to clear low-level values when using ActionLink to refer to a higher

  - by Gary McGill

  [NOTE: I'm using ASP.NET MVC2 RC2.] I have URLs like this: /customer/123/order/456/item/index /customer/123/order/456/item/789/edit My routing table lists the most-specific routes first, so I've got: // customer/123/order/456/item/789/edit routes.MapRoute( "item", // Route name "customer/{customerId}/order/{orderId}/item/{itemId}/{action}", // URL with parameters new { controller = "Items", action = "Details" }, // Parameter defaults new { customerId = @"\d+", orderId = @"\d+", itemId = @"\d+" } // Constraints ); // customer/123/order/456/item/index routes.MapRoute( "items", // Route name "customer/{customerId}/order/{orderId}/item/{action}", // URL with parameters new { controller = "Items", action = "Index" }, // Parameter defaults new { customerId = @"\d+", orderId = @"\d+" } // Constraints ); When I'm in the "Edit" page, I want a link back up to the "Index" page. So, I use: ActionLink("Back to Index", "index") However, because there's an ambient order ID, this results in the URL: /Customer/123/Order/456/Item/789/Index ...whereas I want it to "forget" the order ID and just use: /Customer/123/Order/456/Item/Index I've tried overriding the order ID like so: ActionLink("Back to Index", "index", new { orderId=string.empty }) ...but that doesn't work. How can I persuade ActionLink to "forget" the order ID?

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• How to write a buffer-overflow exploit in windows XP,x86?

  - by Mask

  void function(int a, int b, int c) { char buffer1[5]; char buffer2[10]; int *ret; ret = buffer1 + 12; (*ret) += 8;//why is it 8?? } void main() { int x; x = 0; function(1,2,3); x = 1; printf("%d\n",x); } The above demo is from here: http://insecure.org/stf/smashstack.html But it's not working here: D:\test>gcc -Wall -Wextra hw.cpp && a.exe hw.cpp: In function `void function(int, int, int)': hw.cpp:6: warning: unused variable 'buffer2' hw.cpp: At global scope: hw.cpp:4: warning: unused parameter 'a' hw.cpp:4: warning: unused parameter 'b' hw.cpp:4: warning: unused parameter 'c' 1 And I don't understand why it's 8 though the author thinks: A little math tells us the distance is 8 bytes. My gdb dump as called: Dump of assembler code for function main: 0x004012ee <main+0>: push %ebp 0x004012ef <main+1>: mov %esp,%ebp 0x004012f1 <main+3>: sub $0x18,%esp 0x004012f4 <main+6>: and $0xfffffff0,%esp 0x004012f7 <main+9>: mov $0x0,%eax 0x004012fc <main+14>: add $0xf,%eax 0x004012ff <main+17>: add $0xf,%eax 0x00401302 <main+20>: shr $0x4,%eax 0x00401305 <main+23>: shl $0x4,%eax 0x00401308 <main+26>: mov %eax,0xfffffff8(%ebp) 0x0040130b <main+29>: mov 0xfffffff8(%ebp),%eax 0x0040130e <main+32>: call 0x401b00 <_alloca> 0x00401313 <main+37>: call 0x4017b0 <__main> 0x00401318 <main+42>: movl $0x0,0xfffffffc(%ebp) 0x0040131f <main+49>: movl $0x3,0x8(%esp) 0x00401327 <main+57>: movl $0x2,0x4(%esp) 0x0040132f <main+65>: movl $0x1,(%esp) 0x00401336 <main+72>: call 0x4012d0 <function> 0x0040133b <main+77>: movl $0x1,0xfffffffc(%ebp) 0x00401342 <main+84>: mov 0xfffffffc(%ebp),%eax 0x00401345 <main+87>: mov %eax,0x4(%esp) 0x00401349 <main+91>: movl $0x403000,(%esp) 0x00401350 <main+98>: call 0x401b60 <printf> 0x00401355 <main+103>: leave 0x00401356 <main+104>: ret 0x00401357 <main+105>: nop 0x00401358 <main+106>: add %al,(%eax) 0x0040135a <main+108>: add %al,(%eax) 0x0040135c <main+110>: add %al,(%eax) 0x0040135e <main+112>: add %al,(%eax) End of assembler dump. Dump of assembler code for function function: 0x004012d0 <function+0>: push %ebp 0x004012d1 <function+1>: mov %esp,%ebp 0x004012d3 <function+3>: sub $0x38,%esp 0x004012d6 <function+6>: lea 0xffffffe8(%ebp),%eax 0x004012d9 <function+9>: add $0xc,%eax 0x004012dc <function+12>: mov %eax,0xffffffd4(%ebp) 0x004012df <function+15>: mov 0xffffffd4(%ebp),%edx 0x004012e2 <function+18>: mov 0xffffffd4(%ebp),%eax 0x004012e5 <function+21>: movzbl (%eax),%eax 0x004012e8 <function+24>: add $0x5,%al 0x004012ea <function+26>: mov %al,(%edx) 0x004012ec <function+28>: leave 0x004012ed <function+29>: ret In my case the distance should be - = 5,right?But it seems not working..

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• jQuery AJAX slow in Firefox, fast in IE

  - by Brandon Montgomery

  I'm using jQuery to post to an ASP .NET Web Service to implement a custom auto-complete function. The code works great, except it's slow in FireFox (can't get it to go faster than 1 second). IE is blazing fast - works great. I watch the post in Firefox using Firebug. Here's the service code: <ScriptService(), _ WebService(Namespace:="http://tempuri.org/"), _ WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1), _ ToolboxItem(False)> _ Public Class TestWebSvc Inherits System.Web.Services.WebService <WebMethod(), _ ScriptMethod(ResponseFormat:=Script.Services.ResponseFormat.Json, UseHttpGet:=True)> _ Public Function GetAccounts(ByVal q As String) As Object 'Code taken out for simplicity Return result End Function End Class And the jQuery ajax call: $.ajax({ beforeSend: function (req) { req.setRequestHeader("Content-Type", "application/json"); }, contentType: "application/json; charset=utf-8", type: "GET", url: "http://localhost/Suggest/TestWebSvc.asmx/GetAccounts", data: "q='" + element.val() + "'", dataType: "json", success: testWebSvcSuccess }); As you can see, I've tried to use the HTTP GET verb instead in hopes that that would make the call faster. As it does not, I'll probably switch it back to using POST if I can. Right now I'm just focused on why it's super fast in IE and super slow in Firefox. Versions: jQuery 1.3.2; Firefox 3.0.11; IE 8.0.6001.18783 (64-bit) Thank you for any insight you can provide.

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• Paperclip and xhr.sendAsBinary

  - by Denis

  Hi, I use paperclip to add a file to my model. I want to use the new feature of firefox 3.6, xhr.sendAsBinary, to send a file with an ajax request. Here is how I build my request : var xhr = new XMLHttpRequest(); xhr.open("POST", "/photos?authenticity_token=" + token + "&photo[name]=" + img.name + "&photo[size]=" + img.size); xhr.overrideMimeType('text/plain; charset=x-user-defined-binary'); xhr.sendAsBinary(bin); name and size are saved in my model without problem but the file itself is not catched by paperclip. my model class Photo < ActiveRecord::Base has_attached_file :photo, :styles => { :medium => "300x300>", :thumb => "100x100>" } end the migration def self.up add_column :photos, :photo_file_name, :string add_column :photos, :photo_content_type, :string add_column :photos, :photo_file_size, :integer add_column :photos, :photo_updated_at, :datetime end and my controller # POST /photos # POST /photos.xml def create @photo = Photo.new(params[:photo]) respond_to do |format| if @photo.save format.html { redirect_to(@photo, :notice => 'Photo was successfully created.') } format.xml { render :xml => @photo, :status => :created, :location => @photo } else format.html { render :action => "new" } format.xml { render :xml => @photo.errors, :status => :unprocessable_entity } end end end Any idea how to solve this issue? Thanks

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• plsql show query

  - by CC

  Hi all, I have a small problem using oracle pl sql. I have a sql file with some cursor, etc, and the treatement fail but with no details. I have an idea about the problem (a function with parameters) but I would like to see the parameter for each call, to be able to debug, to see exactly with wich parameter fail. This is the message: DECLARE * ERROR at line 1: ORA-01422: exact fetch returns more than requested number of rows ORA-06512: at line 165 ORA-06512: at line 260 Is there something to set to be able to see some details ? Thanks. Best regards, C.C.

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• Extjs to call a RESTful webservice

  - by VSC

  Hello, I am trying to make a RESTful webservice call using Extjs. Below is the code i am using: Ext.Ajax.request({ url: incomingURL , method: 'POST', params: {param1:p1, param2:p2}, success: function(responseObject){ var obj = Ext.decode(responseObject.responseText); alert(obj); }, failure: function(responseObject){ var obj = Ext.decode(responseObject.responseText); alert(obj); } }); but it does not work, the request is sent using OPTIONS method instead of POST. I also tried to do the same thing using below code but result is the same: var conn = new Ext.data.Connection(); conn.request({ url: incomingURL, method: 'POST', params: {param1:p1, param2:p2}, success: function(responseObject) { Ext.Msg.alert('Status', 'success'); }, failure: function(responseObject) { Ext.Msg.alert('Status', 'Failure'); } }); But when i tried to do the same thing using basic ajax call ( using the browser objects directly i.e. XMLHttpRequest() or ActiveXObject("Microsoft.XMLHTTP")) it works fine and i get the response as expected. Can anyone please help me, as i am not able to understand what i am doing wrong with extjs ajax call?

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• Check ReturnUrl is valid before redirecting

  - by Josh

  I'm using ASP.NET Membership and Form Authentication and before redirecting to the returnURL I wanted to validate it. For those unfamiliar with the workflow, basically if you request a page that requires that you are authenticated, you are redirected to a login page. In the URL string you'll see a parameter called returnURL, e.g. http://example.com/login.aspx?ReturnUrl=%2fprotected%2fdefault.aspx Whether you use this in a redirect such as Response.Redirect(returnURL) or indirectly through the FormsAuthentication.RedirectFromLoginPage method, it passes without validating returnURL. FormsAuthentication.RedirectFromLoginPage does have a security check that it is isn't leaving the domain, but that still doesn't stop someone from putting enough random characters to cause an error. I tried using System.IO.File.Exists(Server.MapPath(returnURL)) but given enough illegal characters it cause Server.MapPath to error. Note: URLEncoding doesn't work because we are not cleaning a parameter, but the primary URL. Any other suggestions for validating or cleaning the returnURL value?

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• Spring Security HTTP Basic Authentication

  - by Raspayu

  Hi people! I am trying to do a really simple basic authentication with Spring Security. I have configured properly the namespace, and there are no Exceptions in the server. In my "servlet.xml" I have got the next for Spring Security: <security:http> <security:http-basic></security:http-basic> <security:intercept-url method="POST" pattern="/**" access="ROLE_USER" /> </security:http> <security:authentication-manager alias="authenticationManager"> <security:authentication-provider> <security:user-service> <security:user name="cucu" password="tas" authorities="ROLE_USER" /> <security:user name="bob" password="bobspassword" authorities="ROLE_USER" /> </security:user-service> </security:authentication-provider> </security:authentication-manager> It nearly all goes perfect: the methods that are not POST doesn't prompt any login form, and the POST method prompt it. The problem is, that nor "cucu", neither "bob" can login there. Can anyone see what am I doing wrong? Thanks in advance! ;-)

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• MVC/HTML - input submit won't trigger when HTML is in a text area

  - by cw

  Any idea why the below code doesn't trigger if I were to put some HTML inside the textarea? It works fine it I don't have HTML in it, but I'm not sure why it doesn't work with it. Here is the code. <form action="/Home/AddPost" method="post"> <table> <tr> <td>Post Title:</td> <td><input id="Title" type="text" name="title" /></td> </tr> <tr> <td>Post Description:</td> <td><textarea id="Description" rows="10" cols="60" name="description"></textarea></td> </tr> </table> <input type="submit" value="Save" /> </form>

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• Objective-C wrapper API design methodology

  - by Wade Williams

  I know there's no one answer to this question, but I'd like to get people's thoughts on how they would approach the situation. I'm writing an Objective-C wrapper to a C library. My goals are: 1) The wrapper use Objective-C objects. For example, if the C API defines a parameter such as char *name, the Objective-C API should use name:(NSString *). 2) The client using the Objective-C wrapper should not have to have knowledge of the inner-workings of the C library. Speed is not really any issue. That's all easy with simple parameters. It's certainly no problem to take in an NSString and convert it to a C string to pass it to the C library. My indecision comes in when complex structures are involved. Let's say you have: struct flow { long direction; long speed; long disruption; long start; long stop; } flow_t; And then your C API call is: void setFlows(flow_t inFlows[4]); So, some of the choices are: 1) expose the flow_t structure to the client and have the Objective-C API take an array of those structures 2) build an NSArray of four NSDictionaries containing the properties and pass that as a parameter 3) create an NSArray of four "Flow" objects containing the structure's properties and pass that as a parameter My analysis of the approaches: Approach 1: Easiest. However, it doesn't meet the design goals Approach 2: For some reason, this seems to me to be the most "Objective-C" way of doing it. However, each element of the NSDictionary would have to be wrapped in an NSNumber. Now it seems like we're doing an awful lot just to pass the equivalent of a struct. Approach 3: Seems the cleanest to me from an object-oriented standpoint and the extra encapsulation could come in handy later. However, like #2, it now seems like we're doing an awful lot (creating an array, creating and initializing objects) just to pass a struct. So, the question is, how would you approach this situation? Are there other choices I'm not considering? Are there additional advantages or disadvantages to the approaches I've presented that I'm not considering?

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• Eclipse Pydev: Supress no-self errors in python wrappers generated with swig

  - by Christian

  Hi, when generating python wrappers with swig the python wrapper classes in the generated python file do not have an explicit self parameter, for example see below: class PySwigIterator(_object): def value(*args): return _spatiotemporalnmf.PySwigIterator_value(*args) def incr(*args): return _spatiotemporalnmf.PySwigIterator_incr(*args) def decr(*args): return _spatiotemporalnmf.PySwigIterator_decr(*args) def distance(*args): return _spatiotemporalnmf.PySwigIterator_distance(*args) I am developing with the eclipse pluging Pydev. Pydev always shows an error when it detects a method without explicit self parameter. I am aware of two methods to get rid of the errors: First, disable error checking for the whole project in the Pydev preferences. Second, add a #@NoSelf to every line with an error. I don't want to use the first one, because I still want to get error warnings for my non-swig-generated files. Obviously the second one is also not very good, because I would have to do it by hand and every time I generate the file again, all #@NoSelfs will be gone. My Question now is, is there a better way to achieve this? Thanks

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• WPF - Bind Menu Item

  - by Miguel

  Hello, I am creating a menu and binding the menu items ate runtime as follows but I am not able to make it work. I am creating the menu as follows: Menu menu = new Menu(); menu.Items.Add(new MenuItem { Command = new PackCommand(), Header = "Pack" }); DockPanel.SetDock(menu, Dock.Top); content.Children.Add(menu); And I am implementing ICommand: public static class PackCommand : ICommand { Boolean CanExecute(object parameter) { return true; } void Execute(object parameter) { Packer packer = new Packer(); packer.Run(); } } I am not sure how to bind the menu item. Why CanExecute? Shouldn't it always? I only want to run packer.Run when the buttom is clicked. I think I should implement ICommand but I am not even sure I should do this? Could someone please help me out? Thanks, Miguel

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• How to write a buffer-overflow exploit in GCC,windows XP,x86?

  - by Mask

  void function(int a, int b, int c) { char buffer1[5]; char buffer2[10]; int *ret; ret = buffer1 + 12; (*ret) += 8;//why is it 8?? } void main() { int x; x = 0; function(1,2,3); x = 1; printf("%d\n",x); } The above demo is from here: http://insecure.org/stf/smashstack.html But it's not working here: D:\test>gcc -Wall -Wextra hw.cpp && a.exe hw.cpp: In function `void function(int, int, int)': hw.cpp:6: warning: unused variable 'buffer2' hw.cpp: At global scope: hw.cpp:4: warning: unused parameter 'a' hw.cpp:4: warning: unused parameter 'b' hw.cpp:4: warning: unused parameter 'c' 1 And I don't understand why it's 8 though the author thinks: A little math tells us the distance is 8 bytes. My gdb dump as called: Dump of assembler code for function main: 0x004012ee <main+0>: push %ebp 0x004012ef <main+1>: mov %esp,%ebp 0x004012f1 <main+3>: sub $0x18,%esp 0x004012f4 <main+6>: and $0xfffffff0,%esp 0x004012f7 <main+9>: mov $0x0,%eax 0x004012fc <main+14>: add $0xf,%eax 0x004012ff <main+17>: add $0xf,%eax 0x00401302 <main+20>: shr $0x4,%eax 0x00401305 <main+23>: shl $0x4,%eax 0x00401308 <main+26>: mov %eax,0xfffffff8(%ebp) 0x0040130b <main+29>: mov 0xfffffff8(%ebp),%eax 0x0040130e <main+32>: call 0x401b00 <_alloca> 0x00401313 <main+37>: call 0x4017b0 <__main> 0x00401318 <main+42>: movl $0x0,0xfffffffc(%ebp) 0x0040131f <main+49>: movl $0x3,0x8(%esp) 0x00401327 <main+57>: movl $0x2,0x4(%esp) 0x0040132f <main+65>: movl $0x1,(%esp) 0x00401336 <main+72>: call 0x4012d0 <function> 0x0040133b <main+77>: movl $0x1,0xfffffffc(%ebp) 0x00401342 <main+84>: mov 0xfffffffc(%ebp),%eax 0x00401345 <main+87>: mov %eax,0x4(%esp) 0x00401349 <main+91>: movl $0x403000,(%esp) 0x00401350 <main+98>: call 0x401b60 <printf> 0x00401355 <main+103>: leave 0x00401356 <main+104>: ret 0x00401357 <main+105>: nop 0x00401358 <main+106>: add %al,(%eax) 0x0040135a <main+108>: add %al,(%eax) 0x0040135c <main+110>: add %al,(%eax) 0x0040135e <main+112>: add %al,(%eax) End of assembler dump. Dump of assembler code for function function: 0x004012d0 <function+0>: push %ebp 0x004012d1 <function+1>: mov %esp,%ebp 0x004012d3 <function+3>: sub $0x38,%esp 0x004012d6 <function+6>: lea 0xffffffe8(%ebp),%eax 0x004012d9 <function+9>: add $0xc,%eax 0x004012dc <function+12>: mov %eax,0xffffffd4(%ebp) 0x004012df <function+15>: mov 0xffffffd4(%ebp),%edx 0x004012e2 <function+18>: mov 0xffffffd4(%ebp),%eax 0x004012e5 <function+21>: movzbl (%eax),%eax 0x004012e8 <function+24>: add $0x5,%al 0x004012ea <function+26>: mov %al,(%edx) 0x004012ec <function+28>: leave 0x004012ed <function+29>: ret In my case the distance should be - = 5,right?But it seems not working.. Why function needs 56 bytes for local variables?( sub $0x38,%esp )

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• Tomcat cookies not working via my ProxyPass VirtualHost

  - by John

  Hi there. I'm having some issues with getting cookies to work when using a ProxyPass to redirect traffic on port 80 to a web-application hosted via Tomcat. My motivation for enabling cookies is to get rid of the "jsessionid=" parameter that is appended to the URLs. I've enabled cookies in my context.xml in META-INF/ for my web application. When I access the webapplication via http://url:8080/webapp it works as expected, the jsessionid parameter is not visible in the URL, instead it's stored in a cookie. When accessing my website via an apache2 virtualhost the cookies doesn't seem to work because now "jsessionid" is being appended to the URLs. How can I solve this issue? Here's my VHost configuration: <VirtualHost *:80 ServerName somedomain.no ServerAlias www.somedomain.no <Proxy * Order deny,allow Allow from all </Proxy ProxyPreserveHost Off ProxyPass / http://localhost:8080/webapp/ ProxyPassReverse / http://localhost:8080/webapp/ ErrorLog /var/log/apache2/somedomain.no.error.log CustomLog /var/log/apache2/somedomain.no.access.log combined </VirtualHost

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• Android HttpClient and HTTPS

  - by user309769

  Hi all, I'm new to implementing HTTPS connections in Android. Essentially, I'm trying to connect to a server using the org.apache.http.client.HttpClient. I believe, at some point, I'll need to access the application's keystore in order to authorize my client with a private key. But, for the moment, I'm just trying to connect and see what happens; I keep getting an HTTP/1.1 400 Bad Request error. I can't seem to make heads or tails of this despite many examples (none of them seem to work for me). My code looks like this (the BODY constant is XmlRPC): private void connect() throws IOException, URISyntaxException{ HttpPost post = new HttpPost(new URI(PROD_URL)); HttpClient client = new DefaultHttpClient(); post.setEntity(new StringEntity(BODY)); HttpResponse result = client.execute(post); Log.d("MainActivity", result.getStatusLine().toString()); } So, pretty simple. Let me know if anyone out there has any advice. Thanks!

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• "Object reference not set to an instance of an object": why can't .NET show more details?

  - by Simon Chadwick

  "Object reference not set to an instance of an object" This is probably one of the most common run-time errors in .NET. Although the System.Exception has a stack trace, why does the exception not also show the name of the object reference field, or at least its type? Over the course of a year I spend hours sifting through stack traces (often in code I did not write), hoping there is a line number from a ".pdb" file, then finding the line in the code, and even then it is often not obvious which reference on the line was null. Having the name of the reference field would be very convenient. If System.ArgumentNullException instances can show the name of the method parameter ("Value cannot be null. Parameter name: value"), then surely System.NullReferenceException instances could include the name of the null field (or its containing collection).

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• Compare two dates with JPA

  - by Kiva

  Hello everybody, I need to compare two dates in a JPQL query but it doesn't work. Here is my query: Query query = em.createQuery("SELECT h FROM PositionHistoric h, SeoDate d WHERE h.primaryKey.siteDb = :site AND h.primaryKey.engineDb = :engine AND h.primaryKey.keywordDb = :keyword AND h.date = d AND d.date <= :date ORDER BY h.date DESC"); My parameter date is a java.util.Date My query return a objects list but the dates are upper and lower to my parameter. Someone kown how to do this ? Thanks.

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• how to fire the function event on PageLoad event of XtraReport ?

  - by ahmed

  I have a situation, I am working on a XtraReport where I am pulling some data from table.Now I created a function and passing a parameter at runtime for the report to generate. But when I fire the function event from a Onclick Button the result is perfect but when I fire the same function event on the page load of the ReportViewer ..I do not get the result. About function , i am creating dataset, and adapter with Sqlquery from runtime passing the parameter value from a session in the query and binding the data to the labels. But as I said I want the result on the pageload event of the reportviewer.

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• [C#][Win32 API] PostMessage Help?

  - by Rudi

  I've looked at sites and MSDN documentation but I still don't understand the last parameter of PostMessage(). On forums in which people ask how to use PostMessage, people reply with one of two implementations: PostMessage(WindowHandle, WM_KEYDOWN, KeyCode, MapVirtualKey(KeyCode, 0) << 16); PostMessage(WindowHandle, WM_KEYDOWN, KeyCode, 0); What's the difference? Why can the last parameter be left as 0 in some instances, but has to be 'shifted' and all that in other instances? Just a quick question. Don't need essay replies (although they would be much appreciated). Any insight is appreciated. Thanks in advance.

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• Difficulty getting Saxon into XQuery mode instead of XSLT

  - by Rosarch

  I'm having difficulty getting XQuery to work. I downloaded Saxon-HE 9.2. It seems to only want to work with XSLT. When I type: java -jar saxon9he.jar I get back usage information for XSLT. When I use the command syntax for XQuery, it doesn't recognize the parameters (like -q), and gives XSLT usage information. Here are some command line interactions: >java -jar saxon9he.jar No source file name Saxon-HE 9.2.0.6J from Saxonica Usage: see http://www.saxonica.com/documentation/using-xsl/commandline.html Options: -a Use xml-stylesheet PI, not -xsl argument -c:filename Use compiled stylesheet from file -config:filename Use configuration file -cr:classname Use collection URI resolver class -dtd:on|off Validate using DTD -expand:on|off Expand defaults defined in schema/DTD -explain[:filename] Display compiled expression tree -ext:on|off Allow|Disallow external Java functions -im:modename Initial mode -ief:class;class;... List of integrated extension functions -it:template Initial template -l:on|off Line numbering for source document -m:classname Use message receiver class -now:dateTime Set currentDateTime -o:filename Output file or directory -opt:0..10 Set optimization level (0=none, 10=max) -or:classname Use OutputURIResolver class -outval:recover|fatal Handling of validation errors on result document -p:on|off Recognize URI query parameters -r:classname Use URIResolver class -repeat:N Repeat N times for performance measurement -s:filename Initial source document -sa Use schema-aware processing -strip:all|none|ignorable Strip whitespace text nodes -t Display version and timing information -T[:classname] Use TraceListener class -TJ Trace calls to external Java functions -tree:tiny|linked Select tree model -traceout:file|#null Destination for fn:trace() output -u Names are URLs not filenames -val:strict|lax Validate using schema -versionmsg:on|off Warn when using XSLT 1.0 stylesheet -warnings:silent|recover|fatal Handling of recoverable errors -x:classname Use specified SAX parser for source file -xi:on|off Expand XInclude on all documents -xmlversion:1.0|1.1 Version of XML to be handled -xsd:file;file.. Additional schema documents to be loaded -xsdversion:1.0|1.1 Version of XML Schema to be used -xsiloc:on|off Take note of xsi:schemaLocation -xsl:filename Stylesheet file -y:classname Use specified SAX parser for stylesheet --feature:value Set configuration feature (see FeatureKeys) -? Display this message param=value Set stylesheet string parameter +param=filename Set stylesheet document parameter ?param=expression Set stylesheet parameter using XPath !option=value Set serialization option >java -jar saxon9he.jar -q:"..\w3xQueryTut.xq" Unknown option -q:..\w3xQueryTut.xq Saxon-HE 9.2.0.6J from Saxonica Usage: see http://www.saxonica.com/documentation/using-xsl/commandline.html Options: -a Use xml-stylesheet PI, not -xsl argument // etc... >java net.sf.saxon.Query -q:"..\w3xQueryTut.xq" Exception in thread "main" java.lang.NoClassDefFoundError: net/sf/saxon/Query Caused by: java.lang.ClassNotFoundException: net.sf.saxon.Query // etc... Could not find the main class: net.sf.saxon.Query. Program will exit. I'm probably making some stupid mistake. Do you know what it could be?

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• Asynchronous sockets in C#

  - by IVlad

  I'm confused about the correct way of using asynchronous socket methods in C#. I will refer to these two articles to explain things and ask my questions: MSDN article on asynchronous client sockets and devarticles.com article on socket programming. My question is about the BeginReceive() method. The MSDN article uses these two functions to handle receiving data: private static void Receive(Socket client) { try { // Create the state object. StateObject state = new StateObject(); state.workSocket = client; // Begin receiving the data from the remote device. client.BeginReceive( state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state); } catch (Exception e) { Console.WriteLine(e.ToString()); } } private static void ReceiveCallback( IAsyncResult ar ) { try { // Retrieve the state object and the client socket // from the asynchronous state object. StateObject state = (StateObject) ar.AsyncState; Socket client = state.workSocket; // Read data from the remote device. int bytesRead = client.EndReceive(ar); if (bytesRead > 0) { // There might be more data, so store the data received so far. state.sb.Append(Encoding.ASCII.GetString(state.buffer,0,bytesRead)); // Get the rest of the data. client.BeginReceive(state.buffer,0,StateObject.BufferSize,0, new AsyncCallback(ReceiveCallback), state); } else { // All the data has arrived; put it in response. if (state.sb.Length > 1) { response = state.sb.ToString(); } // Signal that all bytes have been received. receiveDone.Set(); } } catch (Exception e) { Console.WriteLine(e.ToString()); } } While the devarticles.com tutorial passes null for the last parameter of the BeginReceive method, and goes on to explain that the last parameter is useful when we're dealing with multiple sockets. Now my questions are: What is the point of passing a state to the BeginReceive method if we're only working with a single socket? Is it to avoid using a class field? It seems like there's little point in doing it, but maybe I'm missing something. How can the state parameter help when dealing with multiple sockets? If I'm calling client.BeginReceive(...), won't all the data be read from the client socket? The devarticles.com tutorial makes it sound like in this call: m_asynResult = m_socClient.BeginReceive (theSocPkt.dataBuffer,0,theSocPkt.dataBuffer.Length, SocketFlags.None,pfnCallBack,theSocPkt); Data will be read from the theSocPkt.thisSocket socket, instead of from the m_socClient socket. In their example the two are one and the same, but what happens if that is not the case? I just don't really see where that last argument is useful or at least how it helps with multiple sockets. If I have multiple sockets, I still need to call BeginReceive on each of them, right?

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