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• I need to count the lines from matching config file entries, preferably with 'grep'.

  - by Chris

  I have a configuration file that has entries for various devices, with each entry separated by a blank line. I need to search the file for all instances of a given device type, and count the number of non-blank lines following the occurrence, stopping at the first blank. For example: Server=foo config line 1 config line 2 config line 3 Server=bar config line 1 config line 2 Server=foo config line 1 If I wanted to know how many total "config lines" were associated with server "foo", I should get four. Can you please help?

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• Hibernate + Spring + session + cache

  - by andromeda

  We are using Hibernate with Spring for our Java application. We find out that when a session update something in database other sessions can not see the update. For example user1 get the account balance from database then user2 increase the balance , if user1 get the object another time he see the account balance before updating (seems that session use the value from its cache) but we want to get the updated object with new account balance. User1 use one session during all activity that is different from user2 session. Is any configuration to force to get the updated object from database? or any other help?

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• Java Web Server with Jetty - TCP Connections Taking Long

  - by daysleeper

  I have an application with fairly high traffic (20K req/min) running on the JVM with a Jetty servlet container on Ubuntu. Below is my Jetty configuration: 10 20 2000 2 When I analyze the network traffic, I realize that sometimes it is taking long to establish TCP connections on the port that Jetty is running. The long connections are varying between 3.0s and 9.0s. The port is configured to accept MAX number of TCP connections. Do you know what might be causing the delay in accepting connections? Thanks

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• Is it good practice to export variables in Perl?

  - by gvkv

  I'm finding it very convenient to pass configuration and other data that is read or calculated once but then used many times throughout a program by using Perl's use mechanism. I'm doing this by exporting a hash into the caller's namespace. For example: package Myconfiguration; my %config; sub import { my $callpkg = caller(0); my $expsym = $_[1]; configure() unless %config; *{"$callpkg\::$expsym"} = \%config; } and then in other modules: use MyConfiguration (loc_config_sym); if ( $loc_config_sym{paramater} ) { # ... do stuff ... } However, I'm not sure about this as a best practice. Is it better to add a method that returns a hash ref with the data? Something else?

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• Javascript in CakePHP

  - by user445803

  Hello, I had one page in Views in CakePHP, it have normal javascript block, Just inserted: <script language="JavaScript" type="text/javascript"> ---code--- </script> Inside page, and it was all working okay... But now... It doesn't show... How can I change configuration or something to enable showing javascript blocks without CakePHP commands. Javascript needs data from that page so I can't use outer file, and it's too long to use $javascript-codeBlock Is there any way to reconfigure stupid CakePHP to start showing those blocks? Some files are showing javascript, and it's working all okay, but some of them won't show... Please help...

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• Something wrong with deinstallation of GIT in Windows...

  - by Stef Joosten

  I tried to remove GIT on my windows-XP, by means of the Windows/Configuration/Software menu. After some error message (which I cannot remember), it removed all files. I checked it, and there are no files with ptp in the name left on the entire system. A problem remained however: each time I opened windows-explorer, a nasty error message came calling for a dll file that wasn't there anymore. Anyone know what is going on here? A wild guess: could there be any interference between svn and git, if certain files are linked to both git and svn? Personally, I went to the registry. I found that many traces to GIT are left in the registry after deinstalling GIT the "windows-way". I removed each one carefully by hand, which seems to have solved my problem. This is of course a dangerous path, but I had no choice. Perhaps it is a good idea to look into the Windows-deinstallation script very carefully.

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• Boost: Although compiled, missing lib

  - by Jonathan

  I've compiled Boost and am using it in a Visual C++ project. At some point, I started getting the following error: 1>LINK : fatal error LNK1104: cannot open file 'libboost_filesystem-vc100-mt-sgd-1_45.lib' AFAIK I have the linker configuration set correctly. I've searched for the lib and the closest I found was: libboost_filesystem-vc100-mt-gd-1_45.lib (Notice the missing 's') What does the missing 's' represent? What do these similar yet different libs stand for? How come I'm missing it although I've compiled all of Boost?

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• What are the latest options in Java logging frameworks?

  - by sanity

  This question gets asked periodically, but I've long felt that existing Java logging frameworks were overcomplicated and over-engineered, and I want to see what's new. I have a more critical issue on my current project as we've standardized on JSON as our human-readable data encoding, and most logging frameworks I've seen require XML. I would really rather avoid using JSON for 95% of my apps configuration, and XML for the rest just because of the logging framework (truth be told, I hate XML used for anything other than text markup, its original intended purpose). Are there any hot new Java logging frameworks that are actively maintained, reasonably powerful, have a maven repo, can be reconfigured without restarting your app, and don't tie you to XML?

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• Should member variables of global objects be made global as well?

  - by David Wong

  I'm developing plugins in Eclipse which mandates the use of singleton pattern for the Plugin class in order to access the runtime plugin. The class holds references to objects such as Configuration and Resources. In Eclipse 3.0 plug-in runtime objects are not globally managed and so are not generically accessible. Rather, each plug-in is free to declare API which exposes the plug-in runtime object (e.g., MyPlugin.getInstance() In order for the other components of my system to access these objects, I have to do the following: MyPlugin.getInstance().getConfig().getValue(MyPlugin.CONFIGKEY_SOMEPARAMETER); , which is overly verbose IMO. Since MyPlugin provides global access, wouldn't it be easier for me to just provide global access to the objects it manages as well? MyConfig.getValue(MyPlugin.CONFIGKEY_SOMEPARAMETER); Any thoughts? (I'm actually asking because I was reading about the whole "Global variable access and singletons are evil" debates)

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• Httpd Process High memory usage and slow page loads

  - by Abs

  Hello all, I am running wampserver on my windows vista machine. I have been doing this for a long time and it has been working great. I have completed loads of projects with this setup. However, today, without me changing anything (no configuration etc) only PHP code changes, I find that every time I load pages of my site (those with user sessions or access the database) are really slow to load - Over 30 seconds, they use to take 1 or 2 seconds. When I have a look at the task manager, I can see on page loads the httpd process jumps from 10mb to 30mb, 90mb, 120mb, 250mb and then back down again. I have tested previous php code projects and they seem to all be slow as well! What is going on? Thanks all for any help on this confusion issue!

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• How to generate JSON object on client side and send it to server?

  - by EugeneS

  I have ExtJS based application. I have compound object on the server side, and have ExtJS window with few tabs for editing different parts of this one object. For example: I Have Compound object "Car" public class Car { public string Name; public string Color; public List Wheels; public List Doors; } And on my ExtJS window i have tabs ("General Info", "Wheels", "Doors") for editing different parts of this object. So what i want: When i want to create a new car i want to generate JSON configuration for my class "Car" like {Name:null; Color:null; Wheels:[]; Doors:[]} then sent it to the client, fill it on the client (without callbacks to server) and after user finishes creating his Car object (he added wheels, doors, set name and color) and press save, I want to sent this filled(generated) JSON object to server and save it to DB. Is it possible? Thanks

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• NoMethodError using Memcached Sinatra-style

  - by sevennineteen

  I've just installed Memcached on my Mac and updated my Sinatra app configuration as described in Heroku's documentation, but I'm getting a NoMethodError when trying to use the hash-based syntax they specify: >> CACHE['color'] = 'blue' >> CACHE['color'] Using explicit get and set methods as below seems to work fine. >> CACHE.set('color', 'blue') >> CACHE.get('color') If necessary I can use the latter syntax, but the former seems more elegant. I haven't tested this on Heroku's environment since I'd like whatever implementation I use to work on my local environment as well. Thanks!

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• How do I map nested generics in NHibernate

  - by Gluip

  In NHibernate you can map generics like this <class name="Units.Parameter`1[System.Int32], Units" table="parameter_int" > </class> But how can I map a class like this? Set<T> where T is a Parameter<int> like this Set<Parameter<int>> My mapping hbm.xml looking like this fails <class name="Set`1[[Units.Parameter`1[System.Int32], Units]],Units" table="settable"/> I simplified my mappings a little to get my point accross very clearly. Basically I want NHibernate to map generic class which has has generic type parameter. Want I understand from googling around is that NHibernate is not able to parse the name to the correct type in TypeNameParser.Parse() which result in the following error when adding the mapping to the configuration System.ArgumentException: Exception of type 'System.ArgumentException' was thrown. Parameter name: typeName@31 Anybody found a way around this limitation?

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• Forms Authentication Across Applications Stopped Working

  - by colleski

  Hi, I have a .net 1.1 ASP application (domain.com) which has a .net 2 virtual directory (domain.com/v2) beneath it, both applications run within their own app pool on the same machine running IIS 6. The web.config files for both apps are setup for Forms Authentication as described here - http://msdn.microsoft.com/en-us/library/eb0zx8fc(v=VS.80).aspx. Users would be directed to the domain.com/v2/login.aspx page which would authenticate for both applications, this configuration has been working fine for the last few years until installing one of the recent Windows 2003 security updates today. Now after authenticating under /v2 users keep getting redirected back to domain.com/v2/Login.aspx as domain.com doesnt see them as authenticated anymore. Any ideas as to which security update would have caused this and if its possible to rollback? I've looked at a few suggestions on this (e.g. Cross app on subdomain form authentication not working) and other sites but no luck so far Any help would be appreciated. Thanks

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• sharepoint wss 3.0 user domain

  - by user549966

  I've inherited a sharepoint wss 3.0 farm that is pulling users from 2 different domains, say domainA and domainB. So if I go into Add User and Browse, and type Smith, it is coming up with domainA\jsmith and domainB\jsmith. The company has moved away from domainA and uses only domainB now. So I want to remove domainA from the sharepoint configuration. I don't need to migrate existing sharepoint users, I just want for the domainA users to stop showing up when new users are added. I've been through every page I can find in Central Administration and I don't see where the names of the domain controller(s) are specified. It is using windows auth / NTLM.

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• Application Servers(java) : Should adding RAM to server depend on each domain's -Xmx value?

  - by ring bearer

  We have Glassfish application server running in Linux servers. Each Glassfish installation hosts 3 domains. Each domain has a JVM configuration such as -Xms 1GB and -XmX 2GB. That means if all these three domains are running at max memory, server should be able to allocate total 6GB to the JVMs With that math,each of our server has 8GB RAM (2 GB Buffer) First of all - is this a good approach? I did not think so, because when we analyzed memory utilization on this server over past few months, it was only up to 1GB; Now there are requests to add an additional domain to these servers - does that mean to add additional 2 GB RAM just to be safe or based on trend, continue with whatever memory the server has?

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• StructureMap: How can i unit test the registry class?

  - by Marius

  I have a registry class like this: public class StructureMapRegistry : Registry { public StructureMapRegistry() { For<IDateTimeProvider>().Singleton().Use<DateTimeProviderReturningDateTimeNow>(); } I want to test that the configuration is according to my intent, so i start writing a test: public class WhenConfiguringIOCContainer : Scenario { private TfsTimeMachine.Domain.StructureMapRegistry registry; private Container container; protected override void Given() { registry = new TfsTimeMachine.Domain.StructureMapRegistry(); container = new Container(); } protected override void When() { container.Configure(i => i.AddRegistry(registry)); } [Then] public void DateTimeProviderIsRegisteredAsSingleton() { // I want to say "verify that the container contains the expected type and that the expected type // is registered as a singleton } } How can verify that the registry is accoring to my expectations? Note: I introduced the container because I didn't see any sort of verification methods available on the Registry class. Idealy, I want to test on the registry class directly.

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• Error during installation of Mesa on Linux

  - by rodnower

  Hello, I have a problem. I try to install Mesa 7.8 on CentOS 3.9 for i386 on VMVare 7.0.1 like described here: http://linux-sxs.org/multimedia/mesa.html When I perform configuration stage: ++++++++++++++++++++++++++++++++++++++++++++++++++ [root@CentOS Mesa-7.8]# ./configure --prefix=/usr --sysconfdir=/etc ++++++++++++++++++++++++++++++++++++++++++++++++++ (root is actualy root) This is what I get: ++++++++++++++++++++++++++++++++++++++++++++++++++ . . . checking pkg-config files for X11 are available... no checking for X... no configure: error: X11 development libraries needed for dri driver ++++++++++++++++++++++++++++++++++++++++++++++++++ (Three dots says that there is some output before) Put attention to error. Any idea? Thank you very much forahead.

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• Is there an alternative of using a VBScript for enabling FileStream after SQL Server installation?

  - by user193655

  To use Filestream on a DB 3 steps must be done: 1) enable it a server/instance level 2) enable it (sp_configure) at DB level 3) create a varbinary(max) field that supports filestream (2) and (3) are done easily with T-SQL (1) is doable manually from SQL Server Configuration Manager, basically what I need is to check all the 3 checkboxes: but how is it possible to automize it? I found this artcile "Enabling filestream usin a VBScript", is there another way to do it than using VBScripts? May be something that is possible to do only with 2008R2? In case it VBScript is the only solution, which are the possible downsides?

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• Java classpath and config file

  - by user1228291

  I'm having some trouble finding a config file with classpath. I use : InputStream stream = myclass.class.getResourceAsStream("properties.file"); The properties.file is located under config directory. When running the program with eclipse, it works. I just added config folder in the classpath in the launch configuration. But If I want to run the exported jar like this : java -jar -cp C:\project\lib;C:\project\config myclass.jar I get the oh wonderful java.lang.NullPointerException because it can't find the file. This sounds classic and stupid but I can't find a clue. What does eclipse do that I don't ? Thanks

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• Is it possible to launch a php script at apache startup

  - by Mademoiselle Vagin Cul

  Hi, As the title says, I want to know if it is be possible to automatically launch a PHP script when a restart of apache is done. thanks MORE INFO EDIT: I will try to explain what is the purpose of this, the best I can. We are currently refactoring our application and we'll be stuck with 2 differents configuration file system for the time being, until all of the application flows are refactored (might take more than a year). The old one is using simple flat file in the key=value format (i.e. www.conf), while the new system will use cacheable php files (i.e. www.php). We need to replicate to www.php any config changes made in www.config. Since Apache gets restarted whenever there is a config change in www.conf, I thought it might be a good workaround solution to launch a PHP script, that would replicate the www.conf to www.php.

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• Caching in Ruby Gem, possibly not using Rails

  - by corprew

  I am rewriting an existing Ruby Gem to include caching. This is for a gem that is relatively commonly used, and accesses a large amount of static data on a web service. Currently, I have a small number of gem users doing a large number of accesses to the service that under normal conditions would be swamping / downing the service, and we're going to put the gem up on github for general consumption. Right now, users can choose between using the rails cache mechanism, a simple disk cache, or no cache. What is best practice for letting people choose what cache to use like this (being able to use this outside of rails is a priority so i can't just bail to the underlying caching mechanism)? I'm looking for suggestions/examples for configuration and interface, especially. Thanks for your suggestions

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• Hibernate won't autogenerate sequence table

  - by Jason

  I'm trying to use a sequence table to generate keys for my entities. I notice that if I just use the @GeneratedValue(strategy=GenerationType.TABLE) with no explicit generator, Hibernate will automatically create the hibernate_sequences table in my DB if it doesn't exist. This is great. However, I wanted to make some changes to the sequence table, so I created a @TableGenerator like the following: @GeneratedValue(strategy=GenerationType.TABLE, generator="vdat_seq") @TableGenerator(name="vdat_seq", table="VDAT_SEQ", pkColumnName="seq_name", valueColumnName="seq_next_val", allocationSize=1) This works fine if I manually create the VDAT_SEQ table in my schema; Hibernate won't auto-create it anymore. This causes an issue in my unit tests, since I'd rather not have to manually create a table and maintain it on our testing DB. Is there a configuration variable or some other way to get Hibernate to generate the sequence table?

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• Controlling new features in Spring/Apache tomcat

  - by HeretoLearn

  Is there a good way to manage roll out of new software in Spring/Tomcat configuration. The problem I am trying to address is being able to rollback newly deployed software provided there are no hard dependencies on other moving pieces. For example changed the guts of an algorithm and now want to deploy the new software with the new change off by default and then turning it on on one of the web servers. An obvious way is to build a session object which has a map of key-value pairs(property,bool) which is populated from a db on a session startup and then the value is persisted for that session. This is so that if the value is reverted back existing sessions which started with the original value retain the original value and giving application consistency. Is there a more obvious inbuilt mechanism to do this?

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• Validation of viewstate MAC failed in Safari

  - by Midhat

  Hi I have a web app using forms authentication. When I perform the following steps Let the login cookie expire Click on a link that requires a logged in user The user is redirected to the login page Click the browser back button The user is redirected to the login page again Log in using a valid username/password I get this exception Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. This case appears only in safari (windows and mac). The fundamental difference between safari and other browsers is that when we click the back button in step 4, safari shows the login page again, while the other browsers show the previous page the user was working on. Please help in this regard

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