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• Error when running bundler install

  - by lmumar

  Hi all, I tried running bundle install in our production server, but I encounter this problem: Updating git://github.com/collectiveidea/delayed_job.git fatal: Refusing to fetch into current branch refs/heads/master of non-bare repository An error has occurred in git. Cannot complete bundling. I have bundler version 0.9.25 installed. Thanks

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• How to convert dos/windows newline to unix newline in bash script?

  - by Koran Molovik

  I bash, how do I convert dos/windows newlines to unix? It must be non-interactive, not like starting vi and typing something in, but a command on the command line that can be put in a script file. The dos2unix and unix2dos commands are not available on the system. How do I do this with commands like sed/awk/tr?

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• Calling ADODB inside a function?

  - by David

  Hi, I'm wondering why when i put an sql ADODB query in side a function it produces the following error: Fatal error: Call to a member function Execute() on a non-object in -path to script- My function is something like: $dsn = 'mysql://user:pass@localhost/db'; $db = ADONewConnection($dsn); function getem($q){ $r=$db->Execute($q); return $r->RecordCount(); } echo getem("select * from table"); Any ideas how to fix that?

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• How to see the memory usage of NIO buffers?

  - by festerwim

  Is there a way to see the memory usage of NIO buffers? There is the non-heap memory section in JConsole, but I do not think this includes the NIO buffers? Operating system is Linux (Ubuntu or CentOS) if that would matter. regards, Wim

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• Question about WeakReferences

  - by Impz0r

  Hey there, I've got a question regarding WeakReferences. I'm right now in the process of writing a "Resource Manager" who hast to keep references to created texture objects. I have a Dictionary like: Dictionary<uint, WeakReference> Where the first is, as you allready may guessed, the Resource Id and the second param is a WeakReference to the Resource itself. Right now my Resources do have a method to free themselfes from their Owner (i.e. Resource Manager). They do so in calling a method at the Resource Manger while passing a this reference to it. The ResMgr does lookup if it is a resource he keeps bookmark of and if so, does something like this: WeakReference result; if (m_Resources.TryGetValue(ResourceId, out result)) { if (result.IsAlive) return; (result.Target as Resource).free(); // free for good m_Resources.Remove(ResourceId); } The Problem I'm having is that the part after: if (result.IsAlive) is never reached because there are still leftover references to the Resource. The thing is, I do only have one Reference of the Resource in question and it releases itself like: resource.free(); // calls internally its owner (i.e. ResMgr) resource = null; I guess the left over reference would be the "resource" variable, but I cannot set it to null, because I do have to call free first. Quite a dilema... Well what I wanted to achive with this is a Resource Manager who keeps references to its owning Resources and release them ONLY if there is no reference left to not screw up something. Any idea how I may solve this in a clean fashion? Thanks in advance! Mfg Imp

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• How to animate the drawing of a CGPath?

  - by Jordan Kay

  I am wondering if there is a way to do this using Core Animation. Specifically, I am adding a sub-layer to a layer-backed custom NSView and setting its delegate to another custom NSView. That class's drawInRect method draws a single CGPath: - (void)drawInRect:(CGRect)rect inContext:(CGContextRef)context { CGContextSaveGState(context); CGContextSetLineWidth(context, 12); CGMutablePathRef path = CGPathCreateMutable(); CGPathMoveToPoint(path, NULL, 0, 0); CGPathAddLineToPoint(path, NULL, rect.size.width, rect.size.height); CGContextBeginPath(context); CGContextAddPath(context, path); CGContextStrokePath(context); CGContextRestoreGState(context); } My desired effect would be to animate the drawing of this line. That is, I'd like for the line to actually "stretch" in an animated way. It seems like there would be a simple way to do this using Core Animation, but I haven't been able to come across any. Do you have any suggestions as to how I could accomplish this goal?

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• Updating a Foreign Key constraint with ON DELETE CASCADE not updating?

  - by Alastair Pitts

  We've realised in our SQL Server 2005 DB that some Foreign Keys don't have the On Delete Cascade property set, which is giving us a couple of referential errors when we try and delete some records. Use the Management Studio I scripted the DROP and CREATESQL's, but it seems that the CREATE isn't working correctly. The DROP: USE [FootprintReports] GO IF EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[dbo].[FK__SUBSCRIPTIONS_Reports]') AND parent_object_id = OBJECT_ID(N'[dbo].[_SUBSCRIPTIONS]')) ALTER TABLE [dbo].[_SUBSCRIPTIONS] DROP CONSTRAINT [FK__SUBSCRIPTIONS_Reports] and the CREATE USE [FootprintReports] GO ALTER TABLE [dbo].[_SUBSCRIPTIONS] WITH CHECK ADD CONSTRAINT [FK__SUBSCRIPTIONS_Reports] FOREIGN KEY([PARAMETER_ReportID]) REFERENCES [dbo].[Reports] ([ID]) ON DELETE CASCADE GO ALTER TABLE [dbo].[_SUBSCRIPTIONS] CHECK CONSTRAINT [FK__SUBSCRIPTIONS_Reports] If I manually change the value of the On Delete in the GUI, after dropping and recreating, the On Delete isn't correctly updated. As a test, I set the Delete rule in the GUI to Set Null. It dropped correctly, and recreated without error. If I got back into the GUI, it is still showing the Set Null as the Delete Rule. Have I done something wrong? or is there another way to edit a constraint to add the ON DELETE CASCADE rule?

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• A queue in C using structs and dynamic memory allocation (linked list)

  - by Martin Pugh

  I am tasked with making a queue data structure in C, as a linked list. Our lecturer gave us a large amount of code to implement a stack, but we have to adapt it to create a queue. The code our lecturer gave us ends up not compiling and segfaulting at the exact same point as the code I wrote for the queue. I'm very new to structs, malloc and C in general, so there could be something painfully obvious I've overlooked. Here is the code I am using: #include <stdio.h> #include <stdlib.h> struct node{ int data; //contains the actual data struct node *prev; //pointer to previous node (Closer to front) struct node *next; //pointer to next node (Closer to back) }; typedef struct node *Nodepointer; struct queue{ Nodepointer front; Nodepointer back; }; typedef struct queue *Queuepointer; main(){ Queuepointer myqueue; //create a queue called myqueue init(myqueue); //initialise the queue Nodepointer new = (Nodepointer)malloc(sizeof(struct node)); myqueue->front = new; } int init(Queuepointer q){ q = (Queuepointer)malloc(sizeof(struct queue)); q->front = NULL; q->back = NULL; } The idea is that the queue struct 'contains' the first and last nodes in a queue, and when a node is created, myqueue is updated. However, I cannot even get to that part (pop and push are written but omitted for brevity). The code is segfaulting at the line myqueue->front = new; with the following gdb output: Program received signal SIGSEGV, Segmentation fault. 0x08048401 in main () at queue.c:27 27 myqueue->front = new; Any idea what I'm doing wrong?

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• From Monorail to ASP.Net MVC

  - by Cheekysoft

  The last time I took on a non-trivial .Net/C# application I used Castle Monorail and, on the whole, enjoyed the experience. Early-access/preview releases of .Net MVC were not yet available. Many "Microsoft shops" will now find the "official" solution more appealing. Has anyone gone from Monorail to .Net MVC. How did you find the switch? What are the biggest differences, presently?

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• Proper use of the IDisposable interface

  - by cwick

  I know from reading the MSDN documentation that the "primary" use of the IDisposable interface is to clean up unmanaged resources http://msdn.microsoft.com/en-us/library/system.idisposable.aspx. To me, "unmanaged" means things like database connections, sockets, window handles, etc. But, I've seen code where the Dispose method is implemented to free managed resources, which seems redundant to me, since the garbage collector should take care of that for you. For example: public class MyCollection : IDisposable { private List<String> _theList = new List<String>(); private Dictionary<String, Point> _theDict = new Dictionary<String, Point>(); // Die, you gravy sucking pig dog! public void Dispose() { _theList.clear(); _theDict.clear(); _theList = null; _theDict = null; } My question is, does this make the garbage collector free memory used by MyCollection any faster than it normally would? edit: So far people have posted some good examples of using IDisposable to clean up unmanaged resources such as database connections and bitmaps. But suppose that _theList in the above code contained a million strings, and you wanted to free that memory now, rather than waiting for the garbage collector. Would the above code accomplish that?

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• fill dropdown list by querystring

  - by KareemSaad

  I had drop down list and I want to fill it with data by specific condition i used this code but it was,t worked well <cs> protected void Page_Load(object sender, EventArgs e) { Page.Title = "ThumbnailViewPage"; if (Request.QueryString["Category_Id"] != null) { using (SqlConnection Con = Connection.GetConnection()) { SqlCommand Com = new SqlCommand("GetProducFamilyTP2", Con); Com.CommandType = CommandType.StoredProcedure; Com.Parameters.Add(Parameter.NewInt("@Category_Id", Request.QueryString["Category_Id"])); SqlDataReader DR = Com.ExecuteReader(); if (DR.Read()) { DDlProductFamily.DataTextField = DR["Name"].ToString(); DDlProductFamily.DataValueField = DR["ProductCategory_Id"].ToString(); } } } else if (Request.QueryString["ProductCategory_Id"] != null) { using (SqlConnection Con = Connection.GetConnection()) { SqlCommand Com = new SqlCommand("GetProducFamilyTP3", Con); Com.CommandType = CommandType.StoredProcedure; Com.Parameters.Add(Parameter.NewInt("@ProductCategory_Id", Request.QueryString["ProductCategory_Id"])); SqlDataReader DR = Com.ExecuteReader(); if (DR.Read()) { DDlProductFamily.DataTextField = DR["Name"].ToString(); DDlProductFamily.DataValueField = DR["ProductCategory_Id"].ToString(); } } } } <asp:UpdatePanel ID="UpdatePanel3" runat="server"> <ContentTemplate> <asp:DropDownList ID="DDlProductFamily" runat="server" ondatabound="DDlProductFamily_DataBound" onload="DDlProductFamily_Load" onselectedindexchanged="DDlProductFamily_SelectedIndexChanged"> </asp:DropDownList> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="DDlProductFamily" EventName="SelectedIndexChanged" /> </Triggers> </asp:UpdatePanel>

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• realtime diagnostics

  - by Ion Todirel

  I have an application which has a loop, part of a "Scheduler", which runs at all time and is the heart of the application. Pretty much like a game loop, just that my application is a WPF application and it's not a game. Naturally the application does logging at many points, but the Scheduler does some sensitive monitoring, and sometimes it's impossible just from the logs to tell what may have gotten wrong (and by wrong I don't mean exceptions) or the current status. Because Scheduler's inner loop runs at short intervals, you can't do file I/O-based logging (or using the Event Viewer) in there. First, you need to watch it in real-time, and secondly the log file would grow in size very fast. So I was thinking of ways to show this data to the user in the realtime, some things I considered: Display the data in realtime in the UI Use AllocConsole/WriteConsole to display this information in a console Use a different console application which would display this information, communicate between the Scheduler and the console app using pipes or other IPC techniques Use Windows' Performance Monitor and somehow feed it with this information ETW Displaying in the UI would have its issues. First it doesn't integrate with the UI I had in mind for my application, and I don't want to complicate the UI just for this. This diagnostics would only happen rarely. Secondly, there is going to be some non-trivial data protection, as the Scheduler has it's own thread. A separate console window would work probably, but I'm still worried if it's not too much threshold. Allocating my own console, as this is a windows app, would probably be better than a different console application (3), as I don't need to worry about IPC communication, and non-blocking communication. However a user could close the console I allocated, and it would be problematic in that case. With a separate process you don't have to worry about it. Assuming there is an API for Performance Monitor, it wouldn't be integrated too well with my app or apparent to the users. Using ETW also doesn't solve anything, just a random idea, I still need to display this information somehow. What others think, would there be other ways I missed?

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• MS Dynamics CRM trapping .NET error before I can handle it

  - by clifgriffin

  This is a fun one. I have written a custom search page that provides faster, more user friendly searches than the default Contacts view and also allows searching of Leads and Contacts simultaneously. It uses GridViews bound to SqlDataSources that query filtered views. I'm sure someone will complain that I'm not using the web services for this, but this is just the design decision we made. These GridViews live in UpdatePanels to enable very slick AJAX updates upon search. It's all working great. Nearly ready to be deployed, except for one thing: Some long running searches are triggering an uncatchable SQL timeout exception. [SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.] at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlDataReader.ConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) at System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) at System.Web.UI.WebControls.DataBoundControl.PerformSelect() at System.Web.UI.WebControls.BaseDataBoundControl.DataBind() at System.Web.UI.WebControls.GridView.DataBind() at System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() at System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() at System.Web.UI.Control.EnsureChildControls() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) I found that CRM is doing a server.transfer to capture this error because my UpdatePanels started throwing JavaSript errors when this error would occur. I was only able to get the full error message by using the JavaScript debugger in IE. Having found this error, I thought the solution would be simple. I just needed to wrap my databind calls in try/catch blocks to capture any errors. Unfortunately it seems CRM's IIS configuration has the magic ability to capture this error before it ever gets back to my code. Using the debugger I never see it. It never gets to my catch blocks, but it's clearly happening in the SQL Data Source which is clearly (by the stack trace) being triggered by my GridView bind. Any ideas on this? It's driving me crazy. Code Behind (with some irrelevant functions omitted): protected void Page_Load(object sender, EventArgs e) { //Initialize some stuff this.bannerOracle = new OdbcConnection(ConfigurationManager.ConnectionStrings["OracleConnectionString"].ConnectionString); //Prospect default HideProspects(); HideProspectAddressColumn(); //Contacts default HideContactAddressColumn(); //Default error messages gvContacts.EmptyDataText = "Sad day. Your search returned no contacts."; gvProspects.EmptyDataText = "Sad day. Your search returned no prospects."; //New search try { SearchContact(null, -1); } catch { gvContacts.EmptyDataText = "Oops! An error occured. This may have been a timeout. Please try your search again."; gvContacts.DataSource = null; gvContacts.DataBind(); } } protected void txtSearchString_TextChanged(object sender, EventArgs e) { if(!String.IsNullOrEmpty(txtSearchString.Text)) { try { SearchContact(txtSearchString.Text, Convert.ToInt16(lstSearchType.SelectedValue)); } catch { gvContacts.EmptyDataText = "Oops! An error occured. This may have been a timeout. Please try your search again."; gvContacts.DataSource = null; gvContacts.DataBind(); } if (chkProspects.Checked == true) { try { SearchProspect(txtSearchString.Text, Convert.ToInt16(lstSearchType.SelectedValue)); } catch { gvProspects.EmptyDataText = "Oops! An error occured. This may have been a timeout. Please try your search again."; gvProspects.DataSource = null; gvProspects.DataBind(); } finally { ShowProspects(); } } else { HideProspects(); } } } protected void SearchContact(string search, int type) { SqlCRM_Contact.ConnectionString = ConfigurationManager.ConnectionStrings["MSSQLConnectionString"].ConnectionString; gvContacts.DataSourceID = "SqlCRM_Contact"; string strQuery = ""; string baseQuery = @"SELECT filteredcontact.contactid, filteredcontact.new_libertyid, filteredcontact.fullname, 'none' AS line1, filteredcontact.emailaddress1, filteredcontact.telephone1, filteredcontact.birthdateutc AS birthdate, filteredcontact.gendercodename FROM filteredcontact "; switch(type) { case LASTFIRST: strQuery = baseQuery + "WHERE fullname LIKE @value AND filteredcontact.statecode = 0"; SqlCRM_Contact.SelectCommand = strQuery; SqlCRM_Contact.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case LAST: strQuery = baseQuery + "WHERE lastname LIKE @value AND filteredcontact.statecode = 0"; SqlCRM_Contact.SelectCommand = strQuery; SqlCRM_Contact.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case FIRST: strQuery = baseQuery + "WHERE firstname LIKE @value AND filteredcontact.statecode = 0"; SqlCRM_Contact.SelectCommand = strQuery; SqlCRM_Contact.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case LIBERTYID: strQuery = baseQuery + "WHERE new_libertyid LIKE @value AND filteredcontact.statecode = 0"; SqlCRM_Contact.SelectCommand = strQuery; SqlCRM_Contact.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case EMAIL: strQuery = baseQuery + "WHERE emailaddress1 LIKE @value AND filteredcontact.statecode = 0"; SqlCRM_Contact.SelectCommand = strQuery; SqlCRM_Contact.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case TELEPHONE: strQuery = baseQuery + "WHERE telephone1 LIKE @value AND filteredcontact.statecode = 0"; SqlCRM_Contact.SelectCommand = strQuery; SqlCRM_Contact.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case BIRTHDAY: strQuery = baseQuery + "WHERE filteredcontact.birthdateutc BETWEEN @dateStart AND @dateEnd AND filteredcontact.statecode = 0"; try { DateTime temp = DateTime.Parse(search); if (temp.Year < 1753 || temp.Year > 9999) { search = string.Empty; } else { search = temp.ToString("yyyy-MM-dd"); } } catch { search = string.Empty; } SqlCRM_Contact.SelectCommand = strQuery; SqlCRM_Contact.SelectParameters.Add("dateStart", DbType.String, search.Trim() + " 00:00:00.000"); SqlCRM_Contact.SelectParameters.Add("dateEnd", DbType.String, search.Trim() + " 23:59:59.999"); break; case SSN: //Do something break; case ADDRESS: strQuery = @"SELECT contactid, new_libertyid, fullname, line1, emailaddress1, telephone1, birthdate, gendercodename FROM (SELECT FC.contactid, FC.new_libertyid, FC.fullname, FA.line1, FC.emailaddress1, FC.telephone1, FC.birthdateutc AS birthdate, FC.gendercodename, ROW_NUMBER() OVER(PARTITION BY FC.contactid ORDER BY FC.contactid DESC) AS rn FROM filteredcontact FC INNER JOIN FilteredCustomerAddress FA ON FC.contactid = FA.parentid WHERE FA.line1 LIKE @value AND FA.addressnumber <> 1 AND FC.statecode = 0 ) AS RESULTS WHERE rn = 1"; SqlCRM_Contact.SelectCommand = strQuery; SqlCRM_Contact.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); ShowContactAddressColumn(); break; default: strQuery = @"SELECT TOP 500 filteredcontact.contactid, filteredcontact.new_libertyid, filteredcontact.fullname, 'none' AS line1, filteredcontact.emailaddress1, filteredcontact.telephone1, filteredcontact.birthdateutc AS birthdate, filteredcontact.gendercodename FROM filteredcontact WHERE filteredcontact.statecode = 0"; SqlCRM_Contact.SelectCommand = strQuery; break; } if (type != ADDRESS) { HideContactAddressColumn(); } gvContacts.PageIndex = 0; //try //{ // SqlCRM_Contact.DataBind(); //} //catch //{ // SqlCRM_Contact.DataBind(); //} gvContacts.DataBind(); } protected void SearchProspect(string search, int type) { SqlCRM_Prospect.ConnectionString = ConfigurationManager.ConnectionStrings["MSSQLConnectionString"].ConnectionString; gvProspects.DataSourceID = "SqlCRM_Prospect"; string strQuery = ""; string baseQuery = @"SELECT filteredlead.leadid, filteredlead.fullname, 'none' AS address1_line1, filteredlead.emailaddress1, filteredlead.telephone1, filteredlead.lu_dateofbirthutc AS lu_dateofbirth, filteredlead.lu_gendername FROM filteredlead "; switch (type) { case LASTFIRST: strQuery = baseQuery + "WHERE fullname LIKE @value AND filteredlead.statecode = 0"; SqlCRM_Prospect.SelectCommand = strQuery; SqlCRM_Prospect.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case LAST: strQuery = baseQuery + "WHERE lastname LIKE @value AND filteredlead.statecode = 0"; SqlCRM_Prospect.SelectCommand = strQuery; SqlCRM_Prospect.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case FIRST: strQuery = baseQuery + "WHERE firstname LIKE @value AND filteredlead.statecode = 0"; SqlCRM_Prospect.SelectCommand = strQuery; SqlCRM_Prospect.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case LIBERTYID: strQuery = baseQuery + "WHERE new_libertyid LIKE @value AND filteredlead.statecode = 0"; SqlCRM_Prospect.SelectCommand = strQuery; SqlCRM_Prospect.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case EMAIL: strQuery = baseQuery + "WHERE emailaddress1 LIKE @value AND filteredlead.statecode = 0"; SqlCRM_Prospect.SelectCommand = strQuery; SqlCRM_Prospect.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case TELEPHONE: strQuery = baseQuery + "WHERE telephone1 LIKE @value AND filteredlead.statecode = 0"; SqlCRM_Prospect.SelectCommand = strQuery; SqlCRM_Prospect.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); break; case BIRTHDAY: strQuery = baseQuery + "WHERE filteredlead.lu_dateofbirth BETWEEN @dateStart AND @dateEnd AND filteredlead.statecode = 0"; try { DateTime temp = DateTime.Parse(search); if (temp.Year < 1753 || temp.Year > 9999) { search = string.Empty; } else { search = temp.ToString("yyyy-MM-dd"); } } catch { search = string.Empty; } SqlCRM_Prospect.SelectCommand = strQuery; SqlCRM_Prospect.SelectParameters.Add("dateStart", DbType.String, search.Trim() + " 00:00:00.000"); SqlCRM_Prospect.SelectParameters.Add("dateEnd", DbType.String, search.Trim() + " 23:59:59.999"); break; case SSN: //Do nothing break; case ADDRESS: strQuery = @"SELECT filteredlead.leadid, filteredlead.fullname, filteredlead.address1_line1, filteredlead.emailaddress1, filteredlead.telephone1, filteredlead.lu_dateofbirthutc AS lu_dateofbirth, filteredlead.lu_gendername FROM filteredlead WHERE address1_line1 LIKE @value AND filteredlead.statecode = 0"; SqlCRM_Prospect.SelectCommand = strQuery; SqlCRM_Prospect.SelectParameters.Add("value", DbType.String, search.Trim() + "%"); ShowProspectAddressColumn(); break; default: strQuery = @"SELECT TOP 500 filteredlead.leadid, filteredlead.fullname, 'none' AS address1_line1 filteredlead.emailaddress1, filteredlead.telephone1, filteredlead.lu_dateofbirthutc AS lu_dateofbirth, filteredlead.lu_gendername FROM filteredlead WHERE filteredlead.statecode = 0"; SqlCRM_Prospect.SelectCommand = strQuery; break; } if (type != ADDRESS) { HideProspectAddressColumn(); } gvProspects.PageIndex = 0; //try //{ // SqlCRM_Prospect.DataBind(); //} //catch (Exception ex) //{ // SqlCRM_Prospect.DataBind(); //} gvProspects.DataBind(); }

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• Loading machinecode from file into memory and executing in C -- mprotect failing

  - by chartreusekitsune

  Hi I'm trying to load raw machine code into memory and run it from within a C program, right now when the program executes it breaks when trying to run mprotect on the memory to make it executable. I'm also not entirely sure that if the memory does get set right it will execute. What I currently have is the following: #include <memory.h> #include <sys/mman.h> #include <stdio.h> int main ( int argc, char **argv ) { FILE *fp; int sz = 0; char *membuf; int output = 0; fp = fopen(argv[1],"rb"); if(fp == NULL) { printf("Failed to open file, aborting!\n"); exit(1); } fseek(fp, 0L, SEEK_END); sz = ftell(fp); fseek(fp, 0L, SEEK_SET); membuf = (char *)malloc(sz*sizeof(char)); if(membuf == NULL) { printf("Failed to allocate memory, aborting!\n"); exit(1); } memset(membuf, 0x90, sz*sizeof(char)); if( mprotect(membuf, sz*sizeof(char), PROT_EXEC | PROT_READ | PROT_WRITE) == -1) { printf("mprotect failed!!! aborting!\n"); exit(1); } if((sz*sizeof(char)) != fread(membuf, sz*sizeof(char), 1, fp)) { printf("Read failed, aborting!\n"); exit(1); } __asm__ ( "call %%eax;" : "=a" (output) : "a" (membuf) ); printf("Output = %x\n", output); return 0; }

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• PlaySound linker error in C++

  - by logic-unit

  Hello, I'm getting this error: [Linker error] undefined reference to 'PlaySoundA@12' Id returned 1 exit status From this code: // c++ program to generate a random sequence of numbers then play corresponding audio files #include <windows.h> #include <mmsystem.h> #include <iostream> #pragma comment(lib, "winmm.lib") using namespace std; int main() { int i; i = 0; // set the value of i while (i <= 11) // set the loop to run 11 times { int number; number = rand() % 10 + 1; // generate a random number sequence // cycling through the numbers to find the right wav and play it if (number == 0) { PlaySound("0.wav", NULL, SND_FILENAME); // play the random number } else if (number == 1) { PlaySound("1.wav", NULL, SND_FILENAME); // play the random number } //else ifs repeat to 11... i++; // increment i } return 0; } I've tried absolute and relative paths for the wavs, the file size of them is under 1Mb each too. I've read another thread here on the subject: http://stackoverflow.com/questions/1565439/how-to-playsound-in-c As you may well have guessed this is my first C++ program, so my knowledge is limited with where to go next. I've tried pretty much every page Google has on the subject including MSDN usage page. Any ideas? Thanks in advance...

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• Self-referencing tables in Linq2Sql

  - by J-Man

  Hi, I've seen a lot of questions on self-referencing tables in Linq2Sql and how to eagerly load all child records for a particular root object. I've implemented a temporary solution by accessing all underlying properties, but you can see that this doesn't do the performance any good. The thing is though, that all records are correlated with each-other using a correlation GUID. Example below: RootElement - Id: 1 - ParentId: null - CorrelationId: 4D68E512-4B55-44f4-BA5A-174B630A03DD ChildElement1 - Id: 2 - ParentId: 1 - CorrelationId: 4D68E512-4B55-44f4-BA5A-174B630A03DD ChildElement2 - Id: 3 - ParentId: 2 - CorrelationId: 4D68E512-4B55-44f4-BA5A-174B630A03DD ChildElement1 - Id: 4 - ParentId: 2 - CorrelationId: 4D68E512-4B55-44f4-BA5A-174B630A03DD In my case, I do have access to the correlationId, so I can retrieve all of my records by performing the following query: from element in db.Elements where element.CorrelationId == '4D68E512-4B55-44f4-BA5A-174B630A03DD' select element; But, of course, I want these elements associated with each other by executing this query: from element in db.Elements where element.CorrelationId == '4D68E512-4B55-44f4-BA5A-174B630A03DD' && element.ParentId == null select element; My question is: is it possible to combine the results the first query as some sort of 'caching mechanism' for the query where I get the root element? Thanks for the input. J.

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• Is it possible to read data that has been separately copied to the Android sd card without having ro

  - by icecream

  I am developing an application that needs to access data on the sd card. When I run on my development device (an odroid with Android 2.1) I have root access and can construct the path using: File sdcard = Environment.getExternalStorageDirectory(); String path = sdcard.getAbsolutePath() + File.separator + "mydata" File data = new File(path); File[] files = data.listFiles(new FilenameFilter() { @Override public boolean accept(File dir, String filename) { return filename.toLowerCase().endsWith(".xyz"); }}); However, when I install this on a phone (2.1) where I do not have root access I get files == null. I assume this is because I do not have the right permissions to read the data from the sd card. I also get files == null when just trying to list files on /sdcard. So the same applies without my constructed path. Also, this app is not intended to be distributed through the app store and is needs to use data copied separately to the sd card so this is a real use-case. It is too much data to put in res/raw (I have tried, it did not work). I have also tried adding: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> to the manifest, even though I only want to read the sd card, but it did not help. I have not found a permission type for reading the storage. There is probably a correct way to do this, but I haven't been able to find it. Any hints would be useful.

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• Node.js reading PHP session

  - by Saif Bechan

  Does anyone know if Node.js can access the session variables you set in PHP. I want to deliver diverent content to logged in users and non logged in users. If not, does anyone know a way to achieve this.

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• What is Service Broker ?

  - by Nasser Hajloo

  What is Service Broker in SQL Server and is it meaningful to enableitin a simple Database, Not in a distributed DB. please do not close this question, I saw others similar question and non of them answered me.

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• How Can I create different selectors for accepting new connection in java NIO

  - by Deepak

  I want to write java tcp socket programming using java NIO. Its working fine. But I am using the same selector for accepting reading from and writing to the clients. How Can I create different selectors for accepting new connection in java NIO, reading and writing. Is there any online help. Actually when I am busy in reading or writing my selector uses more iterator. So If more number of clients are connected then performance of accepting new coneection became slow. But I donot want the accepting clients to be slow // Create a selector and register two socket channels Selector selector = null; try { // Create the selector selector = Selector.open(); // Create two non-blocking sockets. This method is implemented in // e173 Creating a Non-Blocking Socket. SocketChannel sChannel1 = createSocketChannel("hostname.com", 80); SocketChannel sChannel2 = createSocketChannel("hostname.com", 80); // Register the channel with selector, listening for all events sChannel1.register(selector, sChannel1.validOps()); sChannel2.register(selector, sChannel1.validOps()); } catch (IOException e) { } // Wait for events while (true) { try { // Wait for an event selector.select(); } catch (IOException e) { // Handle error with selector break; } // Get list of selection keys with pending events Iterator it = selector.selectedKeys().iterator(); // Process each key at a time while (it.hasNext()) { // Get the selection key SelectionKey selKey = (SelectionKey)it.next(); // Remove it from the list to indicate that it is being processed it.remove(); try { processSelectionKey(selKey); } catch (IOException e) { // Handle error with channel and unregister selKey.cancel(); } } } public void processSelectionKey(SelectionKey selKey) throws IOException { // Since the ready operations are cumulative, // need to check readiness for each operation if (selKey.isValid() && selKey.isConnectable()) { // Get channel with connection request SocketChannel sChannel = (SocketChannel)selKey.channel(); boolean success = sChannel.finishConnect(); if (!success) { // An error occurred; handle it // Unregister the channel with this selector selKey.cancel(); } } if (selKey.isValid() && selKey.isReadable()) { // Get channel with bytes to read SocketChannel sChannel = (SocketChannel)selKey.channel(); // See e174 Reading from a SocketChannel } if (selKey.isValid() && selKey.isWritable()) { // Get channel that's ready for more bytes SocketChannel sChannel = (SocketChannel)selKey.channel(); } } Thanks Deepak

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• PHP filter_var() - FILTER_VALIDATE_URL

  - by Alix Axel

  The FILTER_VALIDATE_URL filter seems to have some trouble validating non-ASCII URLs: var_dump(filter_var('http://pt.wikipedia.org/wiki/', FILTER_VALIDATE_URL)); // http://pt.wikipedia.org/wiki/ var_dump(filter_var('http://pt.wikipedia.org/wiki/Guimarães', FILTER_VALIDATE_URL)); // false Why isn't the last URL correctly validated? And what are the possible workarounds? Running PHP 5.3.0. I'd also like to know where I can find the source code of the FILTER_VALIDATE_URL validation filter.

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• Ruby program with the largest ratio of output length to program length

  - by Horace Loeb

  The program print "hi" contains 10 characters and outputs a string with length 2. Therefore its ratio of output length to program length is 2/10. My question is what Ruby program has the largest output length to program length ratio (For program length let's only count non-whitespace characters (i.e., it's easy to minify a program))

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• UITableViewCell indentation not in edit mode.

  - by Eric P.

  When you enter editing mode on a grouped-style UITableView, the cells indent to show the editing control (if you aren't sure what I mean, see this picture (editing mode) http://i.imgur.com/GJXvL.png and this (non-editing mode) http://i.imgur.com/ahKYS.png). I am trying to manually indent a cell when the tableView is not in editing mode. I tried the indentationLevel property, but that just moves the text further to the right inside the cell and doesn't actually change the cell. Any ideas?

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• Castle Windsor: Setting a parameter value to an empty string.

  - by Austin Salonen

  How can I allow one of my string parameters to be an empty string? I get this error when I try either nothing or a single space (names changed): Could not resolve non-optional dependency for 'test.User' (MyNamespace.MyObject). Parameter 'userName' type 'System.String'

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• Hibernate triggering constraint violations using orphanRemoval

  - by ptomli

  I'm having trouble with a JPA/Hibernate (3.5.3) setup, where I have an entity, an "Account" class, which has a list of child entities, "Contact" instances. I'm trying to be able to add/remove instances of Contact into a List<Contact> property of Account. Adding a new instance into the set and calling saveOrUpdate(account) persists everything lovely. If I then choose to remove the contact from the list and again call saveOrUpdate, the SQL Hibernate seems to produce involves setting the account_id column to null, which violates a database constraint. What am I doing wrong? The code below is clearly a simplified abstract but I think it covers the problem as I'm seeing the same results in different code, which really is about this simple. SQL: CREATE TABLE account ( INT account_id ); CREATE TABLE contact ( INT contact_id, INT account_id REFERENCES account (account_id) ); Java: @Entity class Account { @Id @Column public Long id; @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true) @JoinColumn(name = "account_id") public List<Contact> contacts; } @Entity class Contact { @Id @Column public Long id; @ManyToOne(optional = false) @JoinColumn(name = "account_id", nullable = false) public Account account; } Account account = new Account(); Contact contact = new Contact(); account.contacts.add(contact); saveOrUpdate(account); // some time later, like another servlet request.... account.contacts.remove(contact); saveOrUpdate(account); Result: UPDATE contact SET account_id = null WHERE contact_id = ? Edit #1: It might be that this is actually a bug http://opensource.atlassian.com/projects/hibernate/browse/HHH-5091

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