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• Static analysis of multiple if statements (conditions)

  - by koppernickus

  I have code similar to: if conditionA(x, y, z) then doA() else if conditionB(x, y, z) then doB() ... else if conditionZ(x, y, z) then doZ() else throw ShouldNeverHappenException I would like to validate two things (using static analysis): If all conditions conditionA, conditionB, ..., conditionZ are mutually exclusive (i.e. it is not possible that two or more conditions are true in the same time). All possible cases are covered, i.e. "else throw" statement will never be called. Could you recommend me a tool and/or a way I could (easily) do this? I would appreciate more detailed informations than "use Prolog" or "use Mathematica"... ;-)

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• Maven jaxb2:xjc/jaxws:wsimport to be added in eclipse?

  - by wuntee

  I have a library I am creating based on some WSDL/XSD definitions. I am having a problem having the compiled classes added in the eclipse project. I can see that with a 'mvn compile' that the .class files are generated, as well as the .java files. The problem is that even though the .class files are generated, eclipse is still showing an error on the import statement "import com.whatever.SomeService_Service" that was generated by one of the plugins. I tried forcing the source to go into the project/src/main/java directory, but when the project is cleaned, it deletes files that I have created. Has anyone run into this before/found a way to get it to recognize that the class files are there? Thanks.

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• Entity Framework - Optimistic Concurrency Issue

  - by Cranialsurge

  I have a windows service that runs every 10 seconds ... each time it runs, it takes some test data, modifies it and persists it to the database using the EntityFramework. However, on every second run, when I try to persist the change I get the following Optimistic Concurrency Exception:- Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. Refresh ObjectStateManager entries I know for a fact that there is nothing else writing to that DB but my service which updates records every 10 seconds. What could be causing the concurrency exception here ?

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• Client side page permissions - Javascript / jquery / cookies / other?

  - by Ozaki

  TLDR Using plain HTML / Javascript. Want to block access to some pages (doesn't have to be super secure just to stop some peeking eyes). I thought of simply doing this by setting a cookie for each page they are allowed to visit with a value of true but thats a bit messy. Although it would work. Is there a way to set an array of values to a cookie so I can read the cookie and if a name of a page is in there then allow access with an IF statement or so on each of my pages. If they dont have the cookie just to replace my #content (entirepage) to "sorry no" etc. For example: $.cookie("Access","page1, page2, page3",{ expires: 1 }); Am already using JQuery, Jquery cookie. etc. I am up for anyway of doing this cookie idea is just an example So what do you think would be the best / most efficient way of managing this?

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• Casting To The Correct Subclass

  - by kap

  Hi Guys I hava a supeclass called Car with 3 subclasses. class Ford extends Car{ } class Chevrolet extends Car{ } class Audi extends Car{ } Now i have a function called printMessge(Car car) which will print a message of a particular car type. In the implementation i use if statements to test the instance of the classes like this. public int printMessge(Car car){ if((Ford)car instanceof Ford){ // print ford }else if((Chevrolet)car instanceof Chevrolet){ // print chevrolet }else if((Audi)car instanceof Audi){ // print Audi } } for instance if i call it for the first time with Ford printMessge(new Ford()), it prints the ford message but when i call it with printMessge(new Chevrolet()), i get EXCEPTION from the first if statement that Chevrolet cannot be cast to Ford. What am i doing wrong and what is the best way. thanks

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• Php code not executing - dies out when trying to create an object of class - no error displayed

  - by Ali

  I'm having some problems with this piece of code. I've included a class declaration and trying to create an object of that class but my code dies out. It doesn't seem to be an include issue as all the files are being included even the files called for inclusion within the class file itself. However the object is not created - I tried to put an echo statement in the __construct function but nothing it just doesn't run infact doesn't create the object and the code won't continue from there - plus no error is reported or displayed and I have error reporting set to E_ALL and display errors set to true WHats happening here :(

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• Trapping errors in TClientDataSet.CommandText

  - by Rob McDonell

  I have a TClientDataSet connected to a TDataSetProvider, which in turn is connected to a TAdsTable. I set the SQL command and then open the ClientDataset something like this: try CDS.CommandText := 'SELECT * FROM tablename WHERE fieldname = 1'; CDS.Open except // trap exception here - this never gets executed! end; If the SQL statement in CommandText fails, however (syntax error or whatever) I get an exception within the Advantage code, but it never gets caught in my own exception handling code. Is there any way for me to trap this error and report it nicely to the user. Alternatively is there a way to verify the syntax of an SQL query before executing it? I'm using Delphi Pro 2009, and Advantage Local Server 9.

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• Alternate play / pause button for WordPress wpaudio soundmanager plugin

  - by j-man86

  Hello! I am using the wpaudio plugin to convert mp3 links into a javascript/flash audio player. My problem is that I use this plugin in two areas on my site: one on a black background, and one on a white background. I need to use an alternate set of play/pause buttons for each page (white buttons for the black background and vice versa). I am at a total loss on how to do this. I need to some how incorporate a "if page is..." statement into the wpaudio.js but I don't know how to do this with jQuery. Can anyone help? Thanks so much!

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• use doctest and logging in python program

  - by Luke

  #!/usr/bin/python2.4 import logging import sys import doctest def foo(x): """ foo (0) 0 """ print ("%d" %(x)) _logger.debug("%d" %(x)) def _test(): doctest.testmod() _logger = logging.getLogger() _logger.setLevel(logging.DEBUG) _formatter = logging.Formatter('%(message)s') _handler = logging.StreamHandler(sys.stdout) _handler.setFormatter(_formatter) _logger.addHandler(_handler) _test() I would like to use logger module for all of my print statements. I have looked at the first 50 top google links for this, and they seem to agree that doctest uses it's own copy of the stdout. If print is used it works if logger is used it logs to the root console. Can someone please demonstrate a working example with a code snippet that will allow me to combine. Note running nose to test doctest will just append the log output at the end of the test, (assuming you set the switches) it does not treat them as a print statement.

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• Make an iPhone InfoButton light/dark based on color behind it

  - by Paula

  How do I detect what color is under the InfoButton... so I can change the button from DARK to LIGHT? I set my view's color... but how do I tell if it's "kind of light" or "kind of dark"? Besides... I can't change the info-button from light to dark anyway. (read only) Ugh. Shouldn't Apple have some kind of a simple "cmdButton.doThisExtremelyCommonThingForMe = TRUE" statement? InfoButtons are useless if you can't even see them. (Or how would I put an image behind the button to make it stand-out more?)

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• SQL SELECT: "Give me all documents where all of the documents procedures are 'work in progress'"

  - by prestonmarshall

  This one really has me stumped. I have a documents table which hold info about the documents, and a procedures table, which is kind of like a revisions table for each document. What I need to do is write a select statement which gives me all of the documents where all of the procedures have the status "work_in_progress". Here's an example procedures table: document_id | status 1 | 'wip' 1 | 'wip' 1 | 'wip' 1 | 'approved' 2 | 'wip' 2 | 'wip' 2 | 'wip' Here, I would want my query to only return document id 2, because all of its statuses are work_in_progress. I DO NOT want document_id 1 since one of its statuses is 'approved'. I believe this is relational division I want, but I'm not sure where to start. This is MySQL 5.0 FYI.

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• How to dynamically choose two fields from a Linq query as a result

  - by Dr. Zim

  If you have a simple Linq query like: var result = from record in db.Customer select new { Text = record.Name, Value = record.ID.ToString() }; which is returning an object that can be mapped to a Drop Down List, is it possible to dynamically specify which fields map to Text and Value? Of course, you could do a big case (switch) statement, then code each Linq query separately but this isn't very elegant. What would be nice would be something like: (pseudo code) var myTextField = db.Customer["Name"]; // Could be an enumeration?? var myValueField = db.Customer["ID"]; // Idea: choose the field outside the query var result = from record in db.Customer select new { Text = myTextField, Value = myValueField };

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• How can I use Databound variables in conditional statements within Custom Databound controls?

  - by William Calleja

  I'm developing my custom DataBound Controls that make use of an '<ItemTemplate>' tag and '<%# %>' server tags to generate some data however I need to make a conditional statement within one of my Databound controls as shown below. <custom:DataboundControl runat="server"> <ItemTemplate> <% if(((Dictionary<string, string>)Container.DataItem)["MyVariable"]=="" { %> <!-- Conditional Code Happens Here --> <% } %> </ItemTemplate> </custom:DataboundControl> Right now my code isn't working because the compiler cannot recognize my Container.DataItem variable within a <% %> tag and a <%# %> tag doesn't support conditional statements. What can I use?

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• How dynamic can I make my LINQ To SQL Statements?

  - by mcass20

  I have the need to construct a LINQ To SQL statement at runtime based on input from a user and I can't seem to figure out how to dynamically build the WHERE clause. I have no problem with the following: string Filters = "<value>FOO</value>"; Where("FormattedMessage.Contains(@0)",Filters) But what I really need is to make the entire WHERE clause dynamic. This way I can add multiple conditions at runtime like this (rough idea): foreach (Filter filter in filterlist) { whereclause = whereclause + "&& formattedmessage.contains(filter)"; }

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• Instantiating a context in LINQ to Entities

  - by Jagd

  I've seen two different manners that programmers approach when creating an entity context in their code. The first is like such, and you can find it all over the MSDN code examples: public void DoSomething() { using TaxableEducationEntities context = new TaxableEducationEntities()) { // business logic and whatever else } } The second is to create the context as a private attribute in some class that encapsulates your business logic. So you would have something like: public class Education_LINQ { private TaxableEducationEntities context = new TaxableEducationEntities(); public void DoSomething() { var result = from a in context.luAction select a; // business logic and whatever else } } Which way is more efficient? Assume that you have two methods, one called DoSomething1() and another called DoSomething2(), and both methods incorporate the using statement to open the context and do whatever with it. Were you to call one method after the other, would there be any superfluous overhead going on, since essentially both methods create the context and then clean it up when they're done? As opposed to having just one private attribute that is created when a class object is instantiated, and then in turn cleaned up when the object goes out of scope?

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• graphics don't draw when loop condition is dates. c#, winForms

  - by jello

  so i got this piece of code. (currPosX is defined earlier) while (earliestDate < DateTime.Today) { currPosX = currPosX + 5; e.Graphics.DrawLine(Pens.Black, currPosX, 0, currPosX, 10); earliestDate = earliestDate.AddDays(1); } the graphics don't draw. it's really weird, since this only happens when the condition statement is a date comparison. I debugged, and it does go in the loop, and the values are messed with (currPosX for example). But, no display. one more weirdness, if I add a MessageBox.Show("blabla") in the loop, the message box pops up, and graphics are drawn. what's going on here?

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• jQuery Tools - make tabs collapsible

  - by Cordial

  I'm using a basic integration of jQuery Tools "tabs" function and it's working perfectly for me, but the one thing it seems to lack over jQueryUI is that there's no way I can find to make the tabs collapsible. By that I mean all you need to add is collapsible:true to the jQueryUI tabs function. Does anyone know of a way I could append code to the following jQuery Tools statement to make the tabs collapsible? Any advice appreciated! $("ul.main_tabs").tabs("> .mainpane");

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• Database Version Control SQL Server 2008 Drop SP's and Functions

  - by Lieven Cardoen

  I'm working on versioning our database and now searching for a way to drop all stored procedures and functions from a C# Console Application. I'd rather not create a stored procedure that drops all stored procedures and functions. I has to be some sql executed from C#. I tried to drop the stored procedure before creating it, but I get this message: System.Data.SqlClient.SqlException: 'CREATE/ALTER PROCEDURE' must be the first statement in a query batch. Script for one SP for example: DROP PROCEDURE [dbo].[sp_Economatic_LoadJournalEntryFeedbackByData] SET ANSI_NULLS ON SET QUOTED_IDENTIFIER ON CREATE PROCEDURE [dbo].[sp_Economatic_LoadJournalEntryFeedbackByData] @Data VARCHAR(MAX) AS BEGIN ... END So I guess before creating all SP's and functions I'll need to drop all SP's and functions first with one sql script.

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• how to select the min value using having key word

  - by LOVE_KING

  I have created the table stu_dep_det CREATE TABLE `stu_dept_cs` ( `s_d_id` int(10) unsigned NOT NULL auto_increment, `stu_name` varchar(15) , `gender` varchar(15) , `address` varchar(15),`reg_no` int(10) , `ex_no` varchar(10) , `mark1` varchar(10) , `mark2` varchar(15) , `mark3` varchar(15) , `total` varchar(15) , `avg` double(2,0), PRIMARY KEY (`s_d_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC AUTO_INCREMENT=8 ; then Inserted the values INSERT INTO `stu_dept_cs` (`s_d_id`, `stu_name`, `gender`, `address`, `reg_no`, `ex_no`, `mark1`, `mark2`, `mark3`, `total`, `avg`) VALUES (1, 'alex', 'm', 'chennai', 5001, 's1', '70', '90', '95', '255', 85), (2, 'peter', 'm', 'chennai', 5002, 's1', '80', '70', '90', '240', 80), (6, 'parv', 'f', 'mumbai', 5003, 's1', '88', '60', '80', '228', 76), (7, 'basu', 'm', 'kolkatta', 5004, 's1', '85', '95', '56', '236', 79); I want to select the min(avg) using having keyword and I have used the following sql statement SELECT * FROM stu_dept_cs s having min(avg) Is it correct or not plz write the correct ans....

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• i want to show the result of my code on a web page because it is being showed on a console??

  - by lojayna

  package collabsoft.backlog_reports.c4; import java.sql.CallableStatement; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.Statement; //import collabsoft.backlog_reports.c4.Report; public class Report { private Connection con; public Report(){ connectUsingJDBC(); } public static void main(String args[]){ Report dc = new Report(); dc.reviewMeeting(6, 8, 10); dc.createReport("dede",100); //dc.viewReport(100); // dc.custRent(3344,123,22,11-11-2009); } /** the following method is used to connect to the database **/ public void connectUsingJDBC() { // This is the name of the ODBC data source String dataSourceName = "Simple_DB"; try { // loading the driver in the memory Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); // This is the connection URL String dbURL = "jdbc:odbc:" + dataSourceName; con = DriverManager.getConnection("jdbc:mysql://localhost:3306/Collabsoft","root",""); // This line is used to print the name of the driver and it would throw an exception if a problem occured System.out.println("User connected using driver: " + con.getMetaData().getDriverName()); //Addcustomer(con,1111,"aaa","aaa","aa","aam","111","2222","111"); //rentedMovies(con); //executePreparedStatement(con); //executeCallableStatement(con); //executeBatch(con); } catch (Exception e) { e.printStackTrace(); } } /** *this code is to link the SQL code with the java for the task *as an admin I should be able to create a report of a review meeting including notes, tasks and users *i will take the task id and user id and note id that will be needed to be added in the review meeting report and i will display the information related to these ida */ public void reviewMeeting(int taskID, int userID, int noteID)// law el proc bt return table { try{ CallableStatement callableStatement = con.prepareCall("{CALL report_review_meeting(?,?,?)}"); callableStatement.setInt(1,taskID); callableStatement.setInt(2,userID); callableStatement.setInt(3,noteID); ResultSet resultSet = callableStatement.executeQuery(); // or executeupdate() or updateQuery ResultSetMetaData rsm = resultSet.getMetaData(); int numOfColumns = rsm.getColumnCount(); System.out.println("lojayna"); while (resultSet.next()) { System.out.println("New Row:"); for (int i = 1; i <= numOfColumns; i++) System.out.print(rsm.getColumnName(i) + ": " + resultSet.getObject(i) + " "); System.out.println(); } } catch(Exception e) { System.out.println("E"); } } ////////////////////////////////// ///////////////////////////////// public void allproject(int projID)// law el proc bt return table { try{ CallableStatement callableStatement = con.prepareCall("{CALL all_project(?)}"); callableStatement.setInt(1,projID); //callableStatement.setInt(2,userID); //callableStatement.setInt(3,noteID); ResultSet resultSet = callableStatement.executeQuery(); // or executeupdate() or updateQuery ResultSetMetaData rsm = resultSet.getMetaData(); int numOfColumns = rsm.getColumnCount(); System.out.println("lojayna"); while (resultSet.next()) { System.out.println("New Row:"); for (int i = 1; i <= numOfColumns; i++) System.out.print(rsm.getColumnName(i) + ": " + resultSet.getObject(i) + " "); System.out.println(); } } catch(Exception e) { System.out.println("E"); } } /////////////////////////////// /** * here i take the event id and i take a string report and then * i relate the report with the event **/ public void createReport(String report,int E_ID )// law el proc bt return table { try{ Statement st = con.createStatement(); st.executeUpdate("UPDATE e_vent SET e_vent.report=report WHERE e_vent.E_ID= E_ID;"); /* CallableStatement callableStatement = con.prepareCall("{CALL Create_report(?,?)}"); callableStatement.setString(1,report); callableStatement.setInt(2,E_ID); ResultSet resultSet = callableStatement.executeQuery(); // or executeupdate() or updateQuery ResultSetMetaData rsm = resultSet.getMetaData(); int numOfColumns = rsm.getColumnCount(); System.out.println("lojayna"); while (resultSet.next()) { System.out.println("New Row:"); for (int i = 1; i <= numOfColumns; i++) System.out.print(rsm.getColumnName(i) + ": " + resultSet.getObject(i) + " "); System.out.println(); }*/ } catch(Exception e) { System.out.println("E"); System.out.println(e); } } /** in the following method i view the report of the event having the ID eventID */ public void viewReport(int eventID)// law el proc bt return table { try{ CallableStatement callableStatement = con.prepareCall("{CALL view_report(?)}"); callableStatement.setInt(1,eventID); ResultSet resultSet = callableStatement.executeQuery(); // or executeupdate() or updateQuery ResultSetMetaData rsm = resultSet.getMetaData(); int numOfColumns = rsm.getColumnCount(); System.out.println("lojayna"); while (resultSet.next()) { System.out.println("New Row:"); for (int i = 1; i <= numOfColumns; i++) System.out.print(rsm.getColumnName(i) + ": " + resultSet.getObject(i) + " "); System.out.println(); } } catch(Exception e) { System.out.println("E"); } } } // the result of these methods is being showed on the console , i am using WIcket and i want it 2 be showed on the web how is that done ?! thnxxx

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• How to write a linter?

  - by jbdavid

  In my day job I, and others on my team write a lot of hardware models in Verilog-AMS, a language supported primarily by commercial vendors and a few opensource simulator projects. One thing that would make supporting each others code more helpful would be a LINTER that would check our code for common problems and assist with enforcing a shared code formatting style. I of course want to be able to add my own rules and, after I prove their utility to myself, promote them to the rest of the team.. I don't mind doing the work that has to be done, but of course also want to leverage the work of other existing projects. Does having the allowed language syntax in a yacc or bison format give me a leg up? or should I just suck each language statement into a perl string, and use pattern matching to find the things I don't like? (most syntax and compilation errors are easily caught by the commercial tools.. but we have some of our own extentions.)

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• Can MySQL Nested Select return list of results

  - by John

  Hi I want to write a mysql statement which will return a list of results from one table along with a comma separated list of field from another table. I think an example might better explain it Table 1 ======================== id First_Name Surname ---------------------- 1 Joe Bloggs 2 Mike Smith 3 Jane Doe Table 2 ======================== id Person_Id Job_id --------------------- 1 1 1 2 1 2 3 2 2 4 3 3 5 3 4 I want to return a list of people with a comma separated list of job_ids. So my result set would be id First_Name Surname job_id ------------------------------ 1 Joe Bloggs 1,2 2 Mike Smith 2 3 Jane Doe 3,4 I guess the sql would be something like select id, First_Name, Surname, (SELECT job_id FROM Table 2) as job_id from Table 1 but obviously this does not work so need to change the '(SELECT job_id FROM Table 2) as job_id' part. Hope this makes sense Thanks John

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• Is there a Perl module or technique that makes using long namespaces easier?

  - by Robert P

  Some namespaces are long and annoying. Lets say that i downloaded hypothetical package called FooFoo-BarBar-BazBaz.tar.gz, and it has the following modules: FooFoo::BarBar::BazBaz::Bill FooFoo::BarBar::BazBaz::Bob FooFoo::BarBar::BazBaz::Ben FooFoo::BarBar::BazBaz::Bozo FooFoo::BarBar::BazBaz::Brown FooFoo::BarBar::BazBaz::Berkly FooFoo::BarBar::BazBaz::Berkly::First FooFoo::BarBar::BazBaz::Berkly::Second Is there a module or technique I can use that's similar to the C++ 'using' statement, i.e., is there a way I can do using FooFoo::BarBar::BazBaz; which would then let me do my $obj = Brown->new(); ok $obj->isa('FooFoo::BarBar::BazBaz::Brown') ; # true # or... ok $obj->isa('Brown'); # also true

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• Have VB.Net 2010 ErrorProvider Fire on Tabbing Out of BindingSource TextBox on a WinForm

  - by OneSource

  I have a TextBox control on a Windows Form that uses a DataSource custom object as its BindingSource. I have associated an ErrorProvider with the BindingSource like so: Dim dobExample As New DOExample ExampleBS.DataSource = dobExample epExample.DataSource = ExampleBS The ErrorProvider fires if I type a blank space in the TextBox and then press Tab to move to the next control, which is correct. But it doesn't fire if I just press Tab without entering anything. I want the ErrorProvider to show the Error, even if the TextBox is empty and not just validate when there is text in the TextBox. How do I accomplish this? As an additional bit of info, when I execute the following statement: epDOContact.GetError(TextBox) an empty string is returned even though the TextBox is empty when it is required to be present.

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• Unique Key in MySql

  - by Vinodtiru

  I have a table with four Columns. Col1, Col2, Col3, and Col4. Col1, Col2, Col3 is string and Col4 is a integer primary key with Auto Increment. Now my requirement is to have unique combination of Col2 and Col3. I mean to say like. Insert into table(Col1,Col2,Col3) Values('val1','val2','val3'); Insert into table(Col1,Col2,Col3) Values('val4','val2','val3'); the second statement has to throw error as the same combination of 'val2','val3' is present in the table. But i cant make it as a primary key as i need a auto increment column and for that matter the col4 has to be primary. Please let me know a approach by which i can have both in my table. Any kind of help is appreciated. Thanks.

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