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  • PostgreSQL-Server doesn´t start

    - by Jan-Frederik Carl
    Hello, I would like to use PostgreSQL locally on my computer and have installed it. I use Windows 7. I am not able to start the PostgreSQL-Server. When using the "Start Server"-program, I get the following output in the dos command window: Start DoCmd(net start postgresql-8.4)... System error 2 (my translation) System cannot find the specified file. (my translation) Please ask, if I should give additional infos.

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  • Django QuerySet ordering by number of reverse ForeignKey matches

    - by msanders
    I have the following Django models: class Foo(models.Model): title = models.CharField(_(u'Title'), max_length=600) class Bar(models.Model): foo = models.ForeignKey(Foo) eg_id = models.PositiveIntegerField(_(u'Example ID'), default=0) I wish to return a list of Foo objects which have a reverse relationship with Bar objects that have a eg_id value contained in a list of values. So I have: id_list = [7, 8, 9, 10] qs = Foo.objects.filter(bar__eg_id__in=id_list) How do I order the matching Foo objects according to the number of related Bar objects which have an eg_id value in the id_list?

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  • Automatic incremental SQL Script generation for incremental, nightly builds when using Team Build in

    - by Steve Johnson
    hi all, hope that everybody here is OK. We are using VS 2008 as development tool, TFS 2008 as version control as well as build automation. Some of our developer use dbpro for databases changes and some use SQL Server management studio. I am trying to automate build for Web Application built using C# and VB.Net. Our scenario is such that we have a central database to which our web application connects. Whenever we supply our clients with a new functionality or a bug fix, we supply them incremental builds. The SQL script is checked into source control for every incremental build when they have made and tested there changes on our central DB Server. I want to generate Differential script that can be run at the client as an incremental update script. Now to come about it is a problem. Sometimes our developers tend to forget the database change-sets and the script in the source control is missing an SP or a two. Also, sometimes we need to insert default data into some of the tables that have strict stringent values and not test values. Like a table that contains Services provided by the panel, we add a new service name, signature, credentials and service address, etc etc in the ServiceTable. Besides this many other tables may have test data that may not be needed. If we use DataCompare, it will generate changeset for required data (important for client to enable certain services) and our test data that was added to the database as a result of our testing of the functionality or bug fix. Currently i am using SQLSchemaCompareTask (from Visual Studio 2008 Team Database Professional Power Tools API) in the TFSBuild.proj file of the build definition for TFS 2008. Using SQLSchemaCompareTask, the script generated contains database names like [dbo]. etc which are not desired as the script fails when run against SQL Server 2000 databses (Some of our client still use SQL Server 2000) databases as teh backend of the application. Also default data can't be generated by this process. To overcome this problem, i have to come up with a solution that can compare databases and generate script automatically that does not have to be manually reviewed again before being sent to the client. Please suggest effective methodology of such SQL script generation and suggest whether two different databases may be used or something ? Is there any toolkit or api that can enable build automation for SQL Server databases? Thank you all. Regards Steve

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  • wordpress mu theme per-user options

    - by pixeline
    Is it possible to add an options screen to a Wordpress MU theme (options being saved for each user, so blogwide, not sitewide) ? I'm used to program wordpress themes, but i'm a bit puzzled as to how make customization happen in a multi-user environment.

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  • Simple forloop - Python

    - by RadiantHex
    Hi folks, this is probably too simple of a question, but here I go. I have paginated items, each page contains 100 items. The program fetches items till it reaches the item index specified within item_num This is what I have: item_num = 56 range(0, item_num/100 + (item_num%100 > 0)): get_next_100() I'm not really sure about the (item_num%100 0) boolean I used. Is there anything wrong with what I did?

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  • Mimic Windows' 'Run' window in C#/.NET

    - by chaiguy
    I would like to mimic the Run command in Windows in my program. In other words, I would like to give the user the ability to "run" an arbitrary piece of text exactly as would happen if they typed it into the run box. While System.Diagnostics.Process.Start() gets me close, I can't seem to get certain things like environment variables such as %AppData% working. I just keep getting the message "Windows cannot find '%AppData%'..."

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  • Breadcrumbs in CakePHP

    - by kicaj
    I use HtmlHelper from CakePHP to create breadcrumbs navigation for my page... And i set $html->getCrumbs('separator', 'Home Page') to default.ctp and in other views i set $html->addCrumbs('nameLink', 'linkUrl'); All works fine! But when I open my Home Page there is no breadcrumbs, why?

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  • MSDOS "Hello World" EXE

    - by divinci
    Hi all, An open question - but I cant find anywhere to start!! I want to compile a "Hello World" MS-DOS exe. Not a program that runs in 16bit mode, or in MSDos mode on top of Windows OSs. A HELOWRLD.EXE that I can run on my MSDOS box. Thanksyou!

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  • Decompress PNG using zlib

    - by darkie15
    Hi All, How can I use zlib library to decompress a PNG file? I have no idea how to read a PNG file. When I opened a PNG file in TextPad(a text editor), the data was not at all understandable. Is it because a PNG file is compressed? Any help is greatly appreciated. I need to read a PNG file using a C program and gcc compiler. Regards, darkie

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  • How much abstraction is too much?

    - by Daniel Bingham
    In an Object Oriented Program: How much abstraction is too much? How much is just right? I have always been a nuts and bolts kind of guy. I understood the concept behind high levels of encapsulation and abstraction, but always felt instinctively that adding too much would just confuse the program. I always tried to shoot for an amount of abstraction that left no empty classes or layers. And where in doubt, instead of adding a new layer to the hierarchy, I would try and fit something into the existing layers. However, recently I've been encountering more highly abstracted systems. Systems where everything that could require a representation later in the hierarchy gets one up front. This leads to a lot of empty layers, which at first seems like bad design. However, on second thought I've come to realize that leaving those empty layers gives you more places to hook into in the future with out much refactoring. It leaves you greater ability to add new functionality on top of the old with out doing nearly as much work to adjust the old. The two risks of this seem to be that you could get the layers you need wrong. In this case one would wind up still needing to do substantial refactoring to extend the code and would still have a ton of never used layers. But depending on how much time you spend coming up with the initial abstractions, the chance of screwing it up, and the time that could be saved later if you get it right - it may still be worth it to try. The other risk I can think of is the risk of over doing it and never needing all the extra layers. But is that really so bad? Are extra class layers really so expensive that it is much of a loss if they are never used? The biggest expense and loss here would be time that is lost up front coming up with the layers. But much of that time still might be saved later when one can work with the abstracted code rather than more low level code. So when is it too much? At what point do the empty layers and extra "might need" abstractions become overkill? How little is too little? Where's the sweet spot? Are there any dependable rules of thumb you've found in the course of your career that help you judge the amount of abstraction needed?

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  • How can we create iPhone-like spinners in android?

    - by greg7gkb
    Default spinners on the iPhone look a lot better than on Android. It looks like at least one Android app (UrbanSpoon) has been able to replicate this control, and it's awesome: http://www.urbanspoon.com/android Anyone have any ideas on how to create this? Code would be helpful. Thanks, -g

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  • Drupal: View with exposed Taxonomy filter.. 3 questions

    - by Patrick
    Hi, I'm using Views module and an exposed taxonomy based filter, to allow users to select a subselection of articles. I need to further customize my filter: 1) I want the user able to order the tags alphabetically by clicking a checkbox (if this checkbox is unchecked the default order is reset. 2) I want all tags selected in the beginning to show my user all the articles. (Additional tags can be added by the user later, so I cannot just select all the tags in Views settings, because the new ones would be uncovered). thanks

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  • How does mysql define DISTINCT() in reference documentation

    - by goran
    EDIT: This question is about finding definitive reference to MySQL syntax on SELECT modifying keywords and functions. /EDIT AFAIK SQL defines two uses of DISTINCT keywords - SELECT DISTINCT field... and SELECT COUNT(DISTINCT field) ... However in one of web applications that I administer I've noticed performance issues on queries like SELECT DISTINCT(field1), field2, field3 ... DISTINCT() on a single column makes no sense and I am almost sure it is interpreted as SELECT DISTINCT field1, field2, field3 ... but how can I prove this? I've searched mysql site for a reference on this particular syntax, but could not find any. Does anyone have a link to definition of DISTINCT() in mysql or knows about other authoritative source on this? Best EDIT After asking the same question on mysql forums I learned that while parsing the SQL mysql does not care about whitespace between functions and column names (but I am still missing a reference). As it seems you can have whitespace between functions and the parenthesis SELECT LEFT (field1,1), field2... and get mysql to understand it as SELECT LEFT(field,1) Similarly SELECT DISTINCT(field1), field2... seems to get decomposed to SELECT DISTINCT (field1), field2... and then DISTINCT is taken not as some undefined (or undocumented) function, but as SELECT modifying keyword and the parenthesis around field1 are evaluated as if they were part of field expression. It would be great if someone would have a pointer to documentation where it is stated that the whitespace between functions and parenthesis is not significant or to provide links to apropriate MySQL forums, mailing lists where I could raise a question to put this into reference. EDIT I have found a reference to server option IGNORE SPACE. It states that "The IGNORE SPACE SQL mode can be used to modify how the parser treats function names that are whitespace-sensitive", later on it states that recent versions of mysql have reduced this number from 200 to 30. One of the remaining 30 is COUNT for example. With IGNORE SPACE enabled both SELECT COUNT(*) FROM mytable; SELECT COUNT (*) FROM mytable; are legal. So if this is an exception, I am left to conclude that normally functions ignore space by default. If functions ignore space by default then if the context is ambiguous, such as for the first function on a first item of the select expression, then they are not distinguishable from keywords and the error can not be thrown and MySQL must accept them as keywords. Still, my conclusions feel like they have lot of assumptions, I would still be grateful and accept any pointers to see where to follow up on this.

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  • Making a rails inflection for possessive strings?

    - by chovy
    I would like to create a method in additional to the default 'foo'.titlecase that will correctly add "possessiveness" to it. The string is a user's name (<- just did one right there! ) For example: "sam" is the user <%= user.titlecase.possessive + ' Profile' % = #Sam's Profile It just needs to handle edge cases like: Steelers's Profile ( should be Steelers' Profile) Ross's Profile ( should be Ross' Profile )

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  • Another design-related C++ question

    - by Kotti
    Hi! I am trying to find some optimal solutions in C++ coding patterns, and this is one of my game engine - related questions. Take a look at the game object declaration (I removed almost everything, that has no connection with the question). // Abstract representation of a game object class Object : public Entity, IRenderable, ISerializable { // Object parameters // Other not really important stuff public: // @note Rendering template will never change while // the object 'lives' Object(RenderTemplate& render_template, /* params */) : /*...*/ { } private: // Object rendering template RenderTemplate render_template; public: /** * Default object render method * Draws rendering template data at (X, Y) with (Width, Height) dimensions * * @note If no appropriate rendering method overload is specified * for any derived class, this method is called * * @param Backend & b * @return void * @see */ virtual void Render(Backend& backend) const { // Render sprite from object's // rendering template structure backend.RenderFromTemplate( render_template, x, y, width, height ); } }; Here is also the IRenderable interface declaration: // Objects that can be rendered interface IRenderable { /** * Abstract method to render current object * * @param Backend & b * @return void * @see */ virtual void Render(Backend& b) const = 0; } and a sample of a real object that is derived from Object (with severe simplifications :) // Ball object class Ball : public Object { // Ball params public: virtual void Render(Backend& b) const { b.RenderEllipse(/*params*/); } }; What I wanted to get is the ability to have some sort of standard function, that would draw sprite for an object (this is Object::Render) if there is no appropriate overload. So, one can have objects without Render(...) method, and if you try to render them, this default sprite-rendering stuff is invoked. And, one can have specialized objects, that define their own way of being rendered. I think, this way of doing things is quite good, but what I can't figure out - is there any way to split the objects' "normal" methods (like Resize(...) or Rotate(...)) implementation from their rendering implementation? Because if everything is done the way described earlier, a common .cpp file, that implements any type of object would generally mix the Resize(...), etc methods implementation and this virtual Render(...) method and this seems to be a mess. I actually want to have rendering procedures for the objects in one place and their "logic implementation" - in another. Is there a way this can be done (maybe alternative pattern or trick or hint) or this is where all this polymorphic and virtual stuff sucks in terms of code placement?

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  • Where Firefox extensions store data?

    - by Dmitry
    I want to write plugin for GNOME Do, that will work with Firefox extensions data (for example, with URL Alias patterns). I have looked through files in my profile folder (~/.mozilla/firefox/.default/), but haven't found anything related. Can anybody help me?

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  • ASP.NET Routing - load routes from database?

    - by ropstah
    Is it possible to load routes from the database with ASP.NET ? For each r as SomeRouteObject in RouteDataTable routes.MapRoute( _ r.Name, _ r.RouteUri, _ r.RouteValues, _ //?? r.Constraints _ //?? ) Next How should I store the routevalues / constraints? I understand that there are several 'default' routevalues like .Controller and .Action, however I also need entirely custom ones like .Id or .Page...

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  • How to run a powershell script within a DOS batch file

    - by Don Vince
    How do I have a powershell script embedded within the same file as a DOS batch script? I know this kind of thing is possible in other scenarios: Embedding SQL in a DOS batch script using sqlcmd and a clever arrangements of goto's and comments at the beginning of the file In a *nix environment having a the name of the program you wish to run the script with on the first line of the script commented out e.g. #!/usr/local/bin/python There may not be a way to do this - in which case I will have to call the separate powershell script from the launching DOS script. One possible solution I've considered is to echo out the powershell script, and then run it. A good reason to not do this is that part of the reason to attempt this is to be using the advantages of the powershell environment without the pain of, for example, DOS escape characters I have some unusual constraints and would like to find an elegant solution. I suspect this question may be baiting responses of the variety: "why don't you try and solve this different problem instead." Suffice to say these are my constraints, sorry about that. Any ideas? Is there a suitable combination of clever comments and escape characters that will enable me to achieve this? Some thoughts on how to achieve this: A carat ^ at the end of a line in DOS is a continuation - like an underscore in VB An ampersand & in DOS typically is used to separate commands echo Hello & echo World results in 2 echos on separate lines %0 will give you the script that's currently running So something like this (if I could make it work) would be good: # & call powershell -psconsolefile %0 # & goto :EOF /* From here on in we're running nice juicy powershell code */ Write-Output "Hello World" Except... It doesn't work... because the extension of the file isn't as per powershell's liking: Windows PowerShell console file "insideout.bat" extension is not psc1. Windows PowerShell console file extension must be psc1. DOS isn't really altogether happy with the situation either - although it does stumble on '#' is not recognized as an internal or external command, operable program or batch file.

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  • The Command "File.BatchNewTeamProject" is not available in VSTS 2010

    - by TS
    Hi, I am trying to automate the creation of team projects using a command built into VS 2010 called File.BatchNewTeamProject using a project settings file as an argument, and executing this as a process silently in the background from my c# win app. I am aware of a requirement that Team Explorer has to be open and connected to TFS before this command can run, however, when I start a process with devenv.exe, a fresh instance of visual studio pops up with Team Explorer not connected by default. How can I solve this problem?

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  • VB.NET: how to require CheckedListBox to have at least one item selected in WinForms

    - by Craig Johnston
    With the CheckListBox in VB.NET in VS2005, how would you make it compulsory that at least one item is selected? Can you select one of the items at design time to make it the default? EDIT: How can I make it so the last item the user tries to uncheck is the one that stays checked? So it's like the user tries to uncheck the only checked item but can't because it checks back straightaway.

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  • embedded glassfish: java.lang.NoClassDefFoundError: java/util/ServiceLoader

    - by Xinus
    I am trying to embed glassfish inside my java program using embeded api, I am using maven2 and its pom.xml is as follows <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>orh.highmark</groupId> <artifactId>glassfish-test1</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> <name>glassfish-test1</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.glassfish.extras</groupId> <artifactId>glassfish-embedded-all</artifactId> <version>3.1-SNAPSHOT</version> </dependency> </dependencies> <repositories> <repository> <id>maven2-repository.dev.java.net</id> <name>Java.net Repository for Maven</name> <url>http://download.java.net/maven/2/</url> <layout>default</layout> </repository> <repository> <id>glassfish-repository</id> <name>GlassFish Nexus Repository</name> <url>http://maven.glassfish.org/content/groups/glassfish</url> </repository> </repositories> <build> <plugins> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>exec-maven-plugin</artifactId> <version>1.1</version> <executions> <execution> <goals> <goal>java</goal> </goals> </execution> </executions> <configuration> <mainClass>orh.highmark.App</mainClass> <arguments> <argument>argument1</argument> </arguments> </configuration> </plugin> </plugins> </build> </project> Program: public class App { public static void main( String[] args ) { System.out.println( "Hello World!" ); Server.Builder builder = new Server.Builder("test"); builder.logger(true); Server server = builder.build(); } } But for some reason it always gives me error as java.lang.NoClassDefFoundError: java/util/ServiceLoader here is the output C:\Users\sunils\glassfish-tests\glassfish-test1>mvn -e exec:java + Error stacktraces are turned on. [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [INFO] Building glassfish-test1 [INFO] task-segment: [exec:java] [INFO] ------------------------------------------------------------------------ [INFO] Preparing exec:java [INFO] No goals needed for project - skipping [INFO] [exec:java {execution: default-cli}] Hello World! [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] An exception occured while executing the Java class. null java/util/ServiceLoader [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: An exception occured whi le executing the Java class. null at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa ultLifecycleExecutor.java:719) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandalone Goal(DefaultLifecycleExecutor.java:569) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(Defau ltLifecycleExecutor.java:539) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHan dleFailures(DefaultLifecycleExecutor.java:387) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmen ts(DefaultLifecycleExecutor.java:348) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLi fecycleExecutor.java:180) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138) at org.apache.maven.cli.MavenCli.main(MavenCli.java:362) at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:6 0) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.plugin.MojoExecutionException: An exception occured while executing the Java class. null at org.codehaus.mojo.exec.ExecJavaMojo.execute(ExecJavaMojo.java:345) at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPlugi nManager.java:490) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa ultLifecycleExecutor.java:694) ... 17 more Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:290) at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.NoClassDefFoundError: java/util/ServiceLoader at org.glassfish.api.embedded.Server.getMain(Server.java:701) at org.glassfish.api.embedded.Server.<init>(Server.java:290) at org.glassfish.api.embedded.Server.<init>(Server.java:75) at org.glassfish.api.embedded.Server$Builder.build(Server.java:185) at org.glassfish.api.embedded.Server$Builder.build(Server.java:167) at orh.highmark.App.main(App.java:14) ... 6 more [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1 second [INFO] Finished at: Sat May 08 02:55:03 IST 2010 [INFO] Final Memory: 3M/6M [INFO] ------------------------------------------------------------------------ I couldn't guess its problem with my program or with the glassfish api. Can somebody please help me understand what is happening here and how to rectify it? thanks for any clue ..

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  • very large image manipulation and tiling

    - by Mohammad
    I need to a software , Program(Java),or a method for tiling very larg images (more than 140MB). I have used imagemagic and convert tools photoshop and corel draw and matlab (in win os) but I have problem with memory amount.and memory is not enough.imagemagic is very slow and result is not desirable. I dont know how can i only load a small part of image on hard disk to RAM .(with out load whole image from hard)

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