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• SEO Tools to Help You in Your Business

  SEO and other online strategies are being used more and more by businesses today. As the market is developing and becoming more educated, it is more important to ensure that you are on top of your game and understand the impact the SEO and other online tactics have on your website. This article will discuss some of the things that you need to watch out for in your online activities.

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• SSL and mod_rewrite error

  - by wnoveno

  Hi, I have https on my site. Pages with rewritten URL in my site are inaccessible while direct urls (folders). here's the htaccess ## 2009-12-17 16:52 JGC [START] ## Enable http compression for this site <IfModule mod_deflate.c> SetOutputFilter DEFLATE ## Directive "DeflateCompressionLevel" not allowed in .htaccess, only valid in server config and virtual hosts # DeflateCompressionLevel 9 # file-types indicated will not be compressed SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.(?:swf|flv|pdf)$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.(?:exe|t?gz|zip|gz2|sit|rar)$ no-gzip dont-vary <IfModule mod_headers.c> Header append Vary User-Agent </IfModule> </IfModule> ## 2009-12-17 16:52 JGC [END] ## 2010-03-05 16:05 JGC [START] #<IfModule mod_alias.c> #RedirectMatch 301 ^(/)$ /online-casino-poker-register.html #RedirectMatch 301 ^(/en)$ /en/online-casino-poker-register.html #RedirectMatch 301 ^(/en/)$ /en/online-casino-poker-register.html #RedirectMatch 301 ^(/en\.html)$ /en/online-casino-poker-register.html #RedirectMatch 301 ^(/sc)$ /sc/online-casino-poker-register.html #RedirectMatch 301 ^(/sc/)$ /sc/online-casino-poker-register.html #RedirectMatch 301 ^(/sc\.html)$ /sc/online-casino-poker-register.html #RedirectMatch 301 ^(/ch)$ /ch/online-casino-poker-register.html #RedirectMatch 301 ^(/ch/)$ /ch/online-casino-poker-register.html #RedirectMatch 301 ^(/ch\.html)$ /ch/online-casino-poker-register.html #</IfModule> ## 2010-03-05 16:05 JGC [END] ## # @version $Id: htaccess.txt 10492 2008-07-02 06:38:28Z ircmaxell $ # @package Joomla # @copyright Copyright (C) 2005 - 2008 Open Source Matters. All rights reserved. # @license http://www.gnu.org/copyleft/gpl.html GNU/GPL # Joomla! is Free Software ## ##################################################### # READ THIS COMPLETELY IF YOU CHOOSE TO USE THIS FILE # # The line just below this section: 'Options +FollowSymLinks' may cause problems # with some server configurations. It is required for use of mod_rewrite, but may already # be set by your server administrator in a way that dissallows changing it in # your .htaccess file. If using it causes your server to error out, comment it out (add # to # beginning of line), reload your site in your browser and test your sef url's. If they work, # it has been set by your server administrator and you do not need it set here. # ##################################################### ## Can be commented out if causes errors, see notes above. Options +FollowSymLinks # # mod_rewrite in use RewriteEngine On #RewriteLog "/var/www/html/dafa888/rewrite.log" #RewriteLogLevel 3 RewriteCond %{HTTP_COOKIE} !jfcookie\[lang\] [NC] RewriteCond %{HTTP:Accept-Language} ^zh-cn [NC] RewriteRule ^$ /sc/ [L,R=301] RewriteCond %{HTTP_COOKIE} !jfcookie\[lang\] [NC] RewriteCond %{HTTP:Accept-Language} ^zh-tw [NC] RewriteRule ^$ /ch/ [L,R=301] #RewriteCond %{HTTP_COOKIE} !jfcookie[lang] [NC] #RewriteCond %{HTTP_COOKIE} jfcookie\[lang\] [NC] #RewriteCond %{HTTP_COOKIE} jfcookie\[lang\]=([^;]+) [NC] #RewriteRule ^(.*)$ /%1/$1 [NC,QSA] ########## Begin - Rewrite rules to block out some common exploits ## If you experience problems on your site block out the operations listed below ## This attempts to block the most common type of exploit `attempts` to Joomla! # # Block out any script trying to set a mosConfig value through the URL RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|\%3D) [OR] # Block out any script trying to base64_encode crap to send via URL RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [OR] # Block out any script that includes a <script> tag in URL RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR] # Block out any script trying to set a PHP GLOBALS variable via URL RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR] # Block out any script trying to modify a _REQUEST variable via URL RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2}) # Send all blocked request to homepage with 403 Forbidden error! RewriteRule ^(.*)$ index.php [F,L] # ########## End - Rewrite rules to block out some common exploits # Uncomment following line if your webserver's URL # is not directly related to physical file paths. # Update Your Joomla! Directory (just / for root) RewriteBase / #RewriteCond %{HTTP_HOST} ^(.*)$ [NC] #RewriteRule ^(.*)$ http://www.%1/$1 [R=301] ########## Begin - Joomla! core SEF Section # RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_URI} !^/index.php RewriteCond %{REQUEST_URI} (/|\.php|\.html|\.htm|\.feed|\.pdf|\.raw|/[^.]*)$ [NC] RewriteRule (.*) index.php RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L] # ########## End - Joomla! core SEF Section

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• DRBD Replication failure

  - by user62513

  A couple of weeks ago I setup a 2 nodes CRM system with one of the resources managed being MySQL over DRBD. Today for maintenance reasons I restarted both nodes but now they can't connect to each other anymore. DRBD fell out of sync and I followed this guide to get it back connected but it's only able to run successfully on one node. But this strange thing happens: If I crm node standby both nodes and I try: crm node online node0 before crm node online node1, all the CRM resources start successfully but the DRBD partitions are still running in StandAlone state. crm node online node1 beofre crm node online node0, the DRBD resource fails to start, thus causing mysql not to start. If I standby both resources and call crm node online node0 then it times out and prints this error: Running crm node online node0 produces this output after timing out Error setting standby=off (section=nodes, set=<null>): Remote node did not respond Error performing operation: Remote node did not respond Is there anything I'm doing wrong here? An alternative will be just do MySQL replication but I'm not sure how to promote a slave to master when the master database is not available.

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• Missing whole disk device in OpenSolaris

  - by Jeff Mc

  I have begun experimenting with Solaris and ZFS as a NAS. All was going very smoothly until I had a drive failure. When I replaced the drive, I no longer have a device file mapped to the whole disk. /dev/dsk/c7t3d0 does not exist but c7t2d0 and c7t4d0 both do. Also the sd@3,0:wd file under the /devices/ tree is non-existent. Do I have to prepare/partition the disk somehow to cause the whole disk device to exist? Here are a few outputs that might be useful. jeffmc@ats-ds2:/dev/dsk$ zpool status pool: datapool state: DEGRADED status: One or more devices could not be opened. Sufficient replicas exist for the pool to continue functioning in a degraded state. action: Attach the missing device and online it using 'zpool online'. see: http://www.sun.com/msg/ZFS-8000-2Q scrub: none requested config: NAME STATE READ WRITE CKSUM datapool DEGRADED 0 0 0 mirror-0 DEGRADED 0 0 0 c7t2d0 ONLINE 0 0 0 c7t3d0 UNAVAIL 0 0 0 cannot open mirror-1 ONLINE 0 0 0 c7t4d0 ONLINE 0 0 0 c7t5d0 ONLINE 0 0 0 jeffmc@ats-ds2:/dev/dsk$ zpool replace datapool c7t3d0 cannot open 'c7t3d0': no such device in /dev/dsk must be a full path or shorthand device name jeffmc@ats-ds2:/dev/dsk$ sudo format Searching for disks...done AVAILABLE DISK SELECTIONS: 0. c7t0d0 /pci@0,0/pci8086,3599@6/pci8086,330@0/pci1014,2cc@7,1/sd@0,0 1. c7t1d0 /pci@0,0/pci8086,3599@6/pci8086,330@0/pci1014,2cc@7,1/sd@1,0 2. c7t2d0 /pci@0,0/pci8086,3599@6/pci8086,330@0/pci1014,2cc@7,1/sd@2,0 3. c7t3d0 /pci@0,0/pci8086,3599@6/pci8086,330@0/pci1014,2cc@7,1/sd@3,0 4. c7t4d0 /pci@0,0/pci8086,3599@6/pci8086,330@0/pci1014,2cc@7,1/sd@4,0 5. c7t5d0 /pci@0,0/pci8086,3599@6/pci8086,330@0/pci1014,2cc@7,1/sd@5,0

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• zfs pool error, how to determine which drive failed in the past

  - by Kendrick

  I had been copying data from my pool so that I could rebuild it with a different version so that I could go away from solaris 11 and to one that is portable between freebsd/openindia etc. it was copying at 20mb a sec the other day which is about all my desktop drive can handle writing from the network. suddently lastnight it went down to 1.4mb i ran zpool status today and got this. pool: store state: ONLINE status: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected. action: Determine if the device needs to be replaced, and clear the errors using 'zpool clear' or replace the device with 'zpool replace'. see: http://www.sun.com/msg/ZFS-8000-9P scan: none requested config: NAME STATE READ WRITE CKSUM store ONLINE 0 0 0 raidz1-0 ONLINE 0 0 0 c8t3d0p0 ONLINE 0 0 2 c8t4d0p0 ONLINE 0 0 10 c8t2d0p0 ONLINE 0 0 0 it is currently a 3 x1tb drive array. what tools would best be used to determine what the error was and which drive is failing. per the admin doc The second section of the configuration output displays error statistics. These errors are divided into three categories: READ – I/O errors occurred while issuing a read request. WRITE – I/O errors occurred while issuing a write request. CKSUM – Checksum errors. The device returned corrupted data as the result of a read request. it was saying low counts could be any thing from a power flux to a disk event but gave no suggestions as to what tools to check and determine with.

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• Fluent NHibernate Self Referencing Many To Many

  - by Jeremy

  I have an entity called Books that can have a list of more books called RelatedBooks. The abbreviated Book entity looks something likes this: public class Book { public virtual long Id { get; private set; } public virtual IList<Book> RelatedBooks { get; set; } } Here is what the mapping looks like for this relationship HasManyToMany(x => x.RelatedBooks) .ParentKeyColumn("BookId") .ChildKeyColumn("RelatedBookId") .Table("RelatedBooks") .Cascade.SaveUpdate(); Here is a sample of the data that is then generated in the RelatedBooks table: BookId RelatedBookId 1 2 1 3 The problem happens when I Try to delete a book. If I delete the book that has an ID of 1, everything works ok and the RelatedBooks table has the two corresponding records removed. However if I try to delete the book with an ID of 3, I get the error "The DELETE statement conflicted with the REFERENCE constraint "FK5B54405174BAB605". The conflict occurred in database "Test", table "dbo.RelatedBooks", column 'RelatedBookId'". Basically what is happening is the Book cannot be deleted because the record in the RelatedBooks table that has a RelatedBookId of 3 is never deleted. How do I get that record to be deleted when I delete a book? EDIT After changing the Cascade from SaveUpdate() to All(), the same problem still exists if I try to delete the Book with an ID of 3. Also with Cascade set to All(), if delete the Book with and ID of 1, then all 3 books (ID's: 1, 2 and 3) are deleted so that won't work either. Looking at the SQL that is executed when the Book.Delete() method is called when I delete the Book with an ID of 3, it looks like the SELECT statement is looking at the wrong column (which I assume means that the SQL DELETE statment would make the same mistake, therefore never removing that record). Here is the SQL for the RelatedBook SELECT relatedboo0_.BookId as BookId3_ , relatedboo0_.RelatedBookId as RelatedB2_3_ , book1_.Id as Id14_0_ FROM RelatedBooks relatedboo0_ left outer join [Book] book1_ on relatedboo0_.RelatedBookId=book1_.Id WHERE relatedboo0_.BookId=3 The WHERE statment should look something like this for thie particular case: WHERE relatedboo0_.RelatedBookId = 3 SOLUTION Here is what I had to do to get it working for all cases Mapping: HasManyToMany(x => x.RelatedBooks) .ParentKeyColumn("BookId") .ChildKeyColumn("RelatedBookId") .Table("RelatedBooks"); Code: var book = currentSession.Get<Book>(bookId); if (book != null) { //Remove all of the Related Books book.RelatedBooks.Clear(); //Get all other books that have this book as a related book var booksWithRelated = currentSession.CreateCriteria<Book>() .CreateAlias("RelatedBooks", "br") .Add(Restrictions.Eq("br.Id", book.Id)) .List<Book>(); //Remove this book as a Related Book for all other Books foreach (var tempBook in booksWithRelated) { tempBook.RelatedBooks.Remove(book); tempBook.Save(); } //Delete the book book.Delete(); }

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• Best way to handle multiple tables to replace one big table in Rails? (e.g. 'Books1', 'Books2', etc.

  - by mikep

  Hello, I've decided to use multiple tables for an entity (e.g. Books1, Books2, Books3, etc.), instead of just one main table which could end up having a lot of rows (e.g. just Books). I'm doing this to try and to avoid a potential future performance drop that could come with having too many rows in one table. With that, I'm looking for a good way to handle this in Rails, mainly by trying to avoid loading a bunch of unused associations. (I know that I could use a partition for this, but, for now, I've decided to go the 'multiple tables' route.) Each user has their books placed into a specific table. The actual book table is chosen when the user is created, and all of their books go into the same table. I'm going to split the adds across the tables. The goal is to try and keep each table pretty much even -- but that's a different issue. One thing I don't particularly want to have is a bunch of unused associations in the User class. Right now, it looks like I'd have to do the following: class User < ActiveRecord::Base has_many :books1, :books2, :books3, :books4, :books5 end class Books1 < ActiveRecord::Base belongs_to :user end class Books2 < ActiveRecord::Base belongs_to :user end class Books3 < ActiveRecord::Base belongs_to :user end I'm assuming that the main performance hit would come in terms of memory and possibly some method call overhead for each User object, since it has to load all of those associations, which in turn creates all of those nice, dynamic model accessor methods like User.find_by_. But for each specific user, only one of the book tables would be usable/applicable, since all of a user's books are stored in the same table. So, only one of the associations would be in use at any time and any other has_many :bookX association that was loaded would be a waste. For example, with a user.id of 2, I'd only need books3.find_by_author('Author'), but the way I'm thinking of setting this up, I'd still have access to Books1..n. I don't really know Ruby/Rails does internally with all of those has_many associations though, so maybe it's not so bad. But right now I'm thinking that it's really wasteful, and that there may just be a better, more efficient way of doing this. So, a few questions: 1) Is there's some sort of special Ruby/Rails methodology that could be applied to this 'multiple tables to represent one entity' scheme? Are there any 'best practices' for this? 2) Is it really bad to have so many unused has_many associations for each object? Is there a better way to do this? 3) Does anyone have any advice on how to abstract the fact that there's multiple book tables behind a single books model/class? For example, so I can call books.find_by_author('Author') instead of books3.find_by_author('Author'). Thank you!

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• NHibernate IPreUpdateEventListener weird behaviour

  - by mcaaltuntas

  I am using NHibernate 2.0.1 and IPreUpdateEventListener,IPreInsertEventListener events for audit logging purposes. I have a basic entity that has a one to many relation like this. User-------Books From an ASP.NET MVC controller method i am adding a book to a user like this. Book book =new Book("LOTR"); var userBook=user.AddBook(book); After session flushing OnPreInsert event called once for newly created Book object than OnPreUpdate called for all books objects in user's books collection even they have not changed.So I am updating LastMofiedDate property of all books objects and I dont want to do this. Is this supposed behaviour of NHibernate or am I missing something?

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• iPhone SDK Core Data: Fetch all entities with a nil relationship?

  - by Harkonian

  I have a core data project that has Books and Authors. In the data model Authors has a to-many relationship to Books and Books has a 1-1 relationship with Authors. I'm trying to pull all Books that do not have an Author. No matter how I try it, no results are returned. In my predicate I've also tried = NIL, == nil, == NIL. Any suggestions would be appreciated. // fetch all books without authors - (NSMutableArray *)fetchOrphanedBooks { NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Book" inManagedObjectContext:self.managedObjectContext]; [fetchRequest setEntity:entity]; [fetchRequest setFetchBatchSize:20]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"author = nil"]; [fetchRequest setPredicate:predicate]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"name" ascending:NO]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; NSString *sectionKey = @"name";//nil; NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedObjectContext sectionNameKeyPath:sectionKey cacheName:nil]; BOOL success = [aFetchedResultsController performFetch:nil]; NSMutableArray *orphans = nil; // this is always 0 NSLog(@"Orphans found: %i", aFetchedResultsController.fetchedObjects.count); if (aFetchedResultsController.fetchedObjects.count > 0) { orphans = [[NSMutableArray alloc] init]; for (Note *note in aFetchedResultsController.fetchedObjects) { if (note.subject == nil) { [orphans addObject:note]; } } } [aFetchedResultsController release]; [fetchRequest release]; [sortDescriptor release]; [sortDescriptors release]; return [orphans autorelease]; }

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• Different canonical URLs for Facebook and Google?

  - by Victor P

  The following URLs point to the same resource: http://www.domain.com/books/123 http://www.domain.com/books/123-Harry-Potter http://www.domain.com/books/123-Harry-Potter-And-The-Deathly-Hallows I would like to use (1) as the canonical URL for OpenGraph/Facebook, so if you "like" (2) and (3) then will count for (1). But I would like to use (3) as the canonical URL for Google, because of SEO. Is this recommended?

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• How can I remove duplicate nodes in XQuery?

  - by Brabster

  I have an XML document I generate on the fly, and I need a function to eliminate any duplicate nodes from it. My function looks like: declare function local:start2() { let $data := local:scan_books() return <books>{$data}</books> }; Sample output is: <books> <book> <title>XML in 24 hours</title> <author>Some Guy</author> </book> <book> <title>XML in 24 hours</title> <author>Some Guy</author> </book> </books> I want just the one entry in my books root tag, and there are other tags, like say pamphlet in there too that need to have duplicates removed. Any ideas? Updated following comments. By unique nodes, I mean remove multiple occurrences of nodes that have the exact same content and structure.

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• JavaScript and XML Dom - Nested Loop

  - by BSteck

  So I'm a beginner in XML DOM and JavaScript but I've run into an issue. I'm using the script to display my XML data in a table on an existing site. The problem comes in nesting a loop in my JavaScript code. Here is my XML: <?xml version="1.0" encoding="utf-8"?> <book_list> <author> <first_name>Mary</first_name> <last_name>Abbott Hess</last_name> <books> <title>The Healthy Gourmet Cookbook</title> </books> </author> <author> <first_name>Beverly</first_name> <last_name>Bare Bueher</last_name> <books> <title>Cary Grant: A Bio-Bibliography</title> <title>Japanese Films</title> </books> </author> <author> <first_name>James P.</first_name> <last_name>Bateman</last_name> <books> <title>Illinois Land Use Law</title> </books> </author> </book_list> I then use this JavaScript code to read and display the data: > <script type="text/javascript"> if > (window.XMLHttpRequest) { > xhttp=new XMLHttpRequest(); } else > // Internet Explorer 5/6 { > xhttp=new > ActiveXObject("Microsoft.XMLHTTP"); > } xhttp.open("GET","books.xml",false); > xhttp.send(""); > xmlDoc=xhttp.responseXML; > > document.write("<table>"); var > x=xmlDoc.getElementsByTagName("author"); > for (i=0;i<x.length;i++) { > document.write("<tr><td>"); > document.write(x[i].getElementsByTagName("first_name")[0].childNodes[0].nodeValue); > document.write("&nbsp;"); > document.write(x[i].getElementsByTagName("last_name")[0].childNodes[0].nodeValue); > document.write("</td><td>"); > document.write(x[i].getElementsByTagName("title")[0].childNodes[0].nodeValue); > document.write("</td></tr>"); } > document.write("</table>"); </script> The code works well except it only returns the first title element of each author. I somewhat understand why it's doing that, but I don't know how to nest another loop so when the script runs it displays all the titles for an author, not just the first. Whenever I try to nest a loop it breaks the entire script.

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• NPR GLSL Tutorials

  - by anon

  Anyone have a good list of tutorials on doing Non photo realistic rendering with GLSL ? I have seen books on GLSL, and books on NPR, but very few books/tutorials on doing NPR with GLSL. (I want to do it with GLSL as I want real time). Thanks!

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• Tomcat with virtual hosts - 404

  - by Thardas

  I have a CentOS 5.2 server set up with Apache 2.2.3 and Tomcat 5.5.27. The server hosts multiple virtual hosts connected to multiple Tomcats. For instance we have one tomcat for development and testing and one tomcat for production. project.demo.us.com points to dev tomcat and project.us.com points to production tomcat. Here's the virtual host's configuration: <VirtualHost *:80> ServerName project.demo.us.com CustomLog logs/project.demo.us.com/access_log combined env=!VLOG ErrorLog logs/project.demo.us.com/error_log DocumentRoot /var/www/vhosts/project.demo.us.com <Directory /var/www/vhosts/project.demo.us.com> Allow from all AllowOverride All Options -Indexes FollowSymLinks </Directory> ########## ########## ########## JkMount /project/* online </VirtualHost> JkMount line defines that we use online worker and our workers.properties contains this: worker.list=..., online, ... worker.online.port=7703 worker.online.host=localhost worker.online.type=ajp13 worker.online.lbfactor=1 And tomcat's conf/server.xml contains: <Connector port="7703" enableLookups="false" redirectPort="8443" protocol="AJP/1.3" URIEncoding="UTF-8" maxThreads="80" minSpareThreads="10" maxSpareThreads="15"/> I'm not sure what redirectPort is but I tried to telnet to that port and there's no one answering, so it shouldn't matter? Tomcat's webapps directory contains project.war and the server automatically deployed it under project directory which contains index.jsp and hello.html. The latter is for static debugging purposes. Now when I try to access http://project.demo.us.com/project/index.jsp, I get Tomcat's HTTP Status 404 - The requested resource () is not available. The same thing happens to hello.html so it's not working with static content either. Apache's access_log contains: 88.112.152.31 - - [10/Aug/2009:12:15:14 +0300] "GET /demo/index.jsp HTTP/1.1" 404 952 "-" "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2" I couldn't find any mention of the request in Tomcat's logs. If I shutdown this specific tomcat, I no longer get Tomcat's 404 but Apache's 503 Service Temporarily Unavailable, so I should be configuring the correct Tomcat. Is there something obvious that I'm missing? Is there any place where I could find out what path the Tomcat is using to look for requested files?

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• rails: include statement with two ON conditions

  - by Markus

  Hi, I have tree tables books bookmarks users where there is a n to m relation from books to users trough bookmarks. Im looking for a query, where I get all the books of a certain user including the bookmarks. If no bookmarks are there, there should be a null included... my sql statement looks like: SELECT * FROM `books` LEFT OUTER JOIN `bookmarks ` ON bookmarks.book_id = books.id AND bookmarks.user_id = ? In rails I only know the :include statement, but how can I add the second bookmarks.user_id = ? statement in the ON section of this query? if I put it in the :conditions part, no null results would get returned! Thanks! Markus

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• next line character a huge influence on xmlparser?

  - by jovany

  I have question about a basic xml file I'm parsing and just putting in simple nextlines(Enters). I'll try to explain my problem with this next example. I'm( still) building an xml tree and all it has to do ( this is a testtree ) is put the summary in an itemlist. I then export it to a plist so I can see if everything is done correctly. A method that does this is in the parser which looks like this if([elementName isEqualToString:@"Book"]) { [appDelegate.books addObject:aBook]; [aBook release]; aBook = nil; } else { [aBook setValue:currentElementValue forKey:elementName]; NSString *directions = [NSString stringWithFormat:currentElementValue]; [directionTree = setObject:directions forKey:@"directions"]; } [currentElementValue release]; currentElementValue = nil; } the export for the plistfile happens at the endtag of books. Below is the first xmlfile <?xml version="1.0" encoding="UTF-8"?> <Books><Book id="1"><summary>Ero adn the ancient quest to measure the globe.</summary></Book><Book id="2"><summary>how the scientific revolution began.</summary></Book></Books> This is my output http://img139.imageshack.us/img139/9175/picture6rtn.png If I make some adjustments like here <?xml version="1.0" encoding="UTF-8"?> <Books><Book id="1"> <summary>Ero adn the ancient quest to measure the globe.</summary> </Book> <Book id="2"> <summary>how the scientific revolution began.</summary> </Book> </Books> My directions key with type string remains empty... http://img248.imageshack.us/img248/5838/picture7y.png I never knew that if I just put in an enter it would have such an influence. Does anyone know a solution to this since my real xml file looks like this. ps. the funny thing is I can actually see ( when debugging)my directions string (NSString directions ) fill up with the currentElementValue in both cases.

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• How do you nest g:each tags in gsp?

  - by Neoryder

  Assume I have the following classes class Genre { static hasMany=[author:Author] } class Author{ static hasMany=[books:Books] } class Books{ Author author } How do I go about printing this in the gsp using g:each tag?

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• improving data extraction from text file in Java

  - by owca

  I have CSV file with sample data in this form : 220 30 255 0 0 Javascript 200 20 0 255 128 Thinking in java , where the first column is height, second thickness, next three are rgb values for color and last one is title. All need to be treated as separate variables. I have already written my own solution for this, but I'm wondering if there are no better/easier/shorter ways of doing this. Extracted data will then be used to create Book object, throw every Book into array of books and print it with swing. Here's the code : private static Book[] addBook(Book b, Book[] bookTab){ Book[] tmp = bookTab; bookTab = new Book[tmp.length+1]; for(int i = 0; i < tmp.length; i++){ bookTab[i] = tmp[i]; } bookTab[tmp.length] = b; return bookTab; } public static void main(String[] args) { Book[] books = new Book[0]; try { BufferedReader file = new BufferedReader(new FileReader("K:\\books.txt")); String s; while ((s = file.readLine()) != null) { int hei, thick, R, G, B; String tit; hei = Integer.parseInt(s.substring(0, 3).replaceAll(" ", "")); thick = Integer.parseInt(s.substring(4, 6).replaceAll(" ", "")); R = Integer.parseInt(s.substring(10, 13).replaceAll(" ", "")); G = Integer.parseInt(s.substring(14, 17).replaceAll(" ", "")); B = Integer.parseInt(s.substring(18, 21).replaceAll(" ", "")); tit = s.substring(26); System.out.println(tyt+wys+grb+R+G+B); books = addBook(new Book(wys, grb, R, G, B, tyt),books); } file.close(); } catch (IOException e) { //do nothing } }

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• to_xml with :only and :methods

  - by Jake

  I'm calling to_xml on an ActiveRecord object with both :only and :methods parameters. The method that I'm including returns a collection for AR objects. This works fine without the :only param, but when that is added I just get the default to_s representation of my objects. i.e <author><books>#&lt;Book:0x107753228&gt;</books>\n</author> Any ideas? Update, here is the code: class Author < ActiveRecord::Base def books #this is a named scope products.by_type(:book) end end Author.to_xml(:methods => :books, :only => :id)

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• The question about the basics of LINQ to SQL

  - by Alex

  I just started learning LINQ to SQL, and so far I'm impressed with the easy of use and good performance. I used to think that when doing LINQ queries like from Customer in DB.Customers where Customer.Age > 30 select Customer LINQ gets all customers from the database ("SELECT * FROM Customers"), moves them to the Customers array and then makes a search in that Array using .NET methods. This is very inefficient, what if there are hundreds of thousands of customers in the database? Making such big SELECT queries would kill the web application. Now after experiencing how actually fast LINQ to SQL is, I start to suspect that when doing that query I just wrote, LINQ somehow converts it to a SQL Query string SELECT * FROM Customers WHERE Age > 30 And only when necessary it will run the query. So my question is: am I right? And when is the query actually run? The reason why I'm asking is not only because I want to understand how it works in order to build good optimized applications, but because I came across the following problem. I have 2 tables, one of them is Books, the other has information on how many books were sold on certain days. My goal is to select books that had at least 50 sales/day in past 10 days. It's done with this simple query: from Book in DB.Books where (from Sale in DB.Sales where Sale.SalesAmount >= 50 && Sale.DateOfSale >= DateTime.Now.AddDays(-10) select Sale.BookID).Contains(Book.ID) select Book The point is, I have to use the checking part in several queries and I decided to create an array with IDs of all popular books: var popularBooksIDs = from Sale in DB.Sales where Sale.SalesAmount >= 50 && Sale.DateOfSale >= DateTime.Now.AddDays(-10) select Sale.BookID; BUT when I try to do the query now: from Book in DB.Books where popularBooksIDs.Contains(Book.ID) select Book It doesn't work! That's why I think that we can't use thins kinds of shortcuts in LINQ to SQL queries, like we can't use them in real SQL. We have to create straightforward queries, am I right?

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• How to gather information on windows shell programming?

  - by terrani

  Hi, I am very interested in learning windows shell programming. So...I searched for books on the amazon.com. I see that books on the amazon.com are out of date. Most of books are published before 2005. I googled about it and found many tips and tricks, but not step by step guide. Where do I get started?

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• Wordpress like dynamic permalinks in ASP.NET MVC2/3 or ASP.NET 4.0

  - by Aseem Gautam

  Scenario: There are two entities say 'Books' and 'Book Reviews'. There can be multiple books and each book can have multiple reviews. Each review and book should have a separate permalink. Books and Reviews can be added by users using separate input forms. As soon as any book/review is added it should be accessible by its permalink. Anyone can point me in the right direction on how should this be implemented?

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• return an ArrayList method

  - by Bopeng Liu

  This is a drive method for two other classes. which i posted here http://codereview.stackexchange.com/questions/33148/book-program-with-arraylist I need some help for the private static ArrayList getAuthors(String authors) method. I am kind a beginner. so please help me finish this drive method. or give me some directions. Instruction some of the elements of the allAuthors array contain asterisks “*” between two authors names. The getAuthors method uses this asterisk as a delimiter between names to store them separately in the returned ArrayList of Strings. import java.util.ArrayList; public class LibraryDrive { public static void main(String[] args) { String[] titles = { "The Hobbit", "Acer Dumpling", "A Christmas Carol", "Marley and Me", "Building Java Programs", "Java, How to Program" }; String[] allAuthors = { "Tolkien, J.R.", "Doofus, Robert", "Dickens, Charles", "Remember, SomeoneIdont", "Reges, Stuart*Stepp, Marty", "Deitel, Paul*Deitel, Harvery" }; ArrayList<String> authors = new ArrayList<String>(); ArrayList<Book> books = new ArrayList<Book>(); for (int i = 0; i < titles.length; i++) { authors = getAuthors(allAuthors[i]); Book b = new Book(titles[i], authors); books.add(b); authors.remove(0); } Library lib = new Library(books); System.out.println(lib); lib.sort(); System.out.println(lib); } private static ArrayList<String> getAuthors(String authors) { ArrayList books = new ArrayList<String>(); // need help here. return books; } }

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• How to avoid multiple, unused has_many associations when using multiple models for the same entity (

  - by mikep

  Hello, I'm looking for a nice, Ruby/Rails-esque solution for something. I'm trying to split up some data using multiple tables, rather than just using one gigantic table. My reasoning is pretty much to try and avoid the performance drop that would come with having a big table. So, rather than have one table called books, I have multiple tables: books1, books2, books3, etc. (I know that I could use a partition, but, for now, I've decided to go the 'multiple tables' route.) Each user has their books placed into a specific table. The actual book table is chosen when the user is created, and all of their books go into the same table. The goal is to try and keep each table pretty much even -- but that's a different issue. One thing I don't particularly want to have is a bunch of unused associations in the User class. Right now, it looks like I'd have to do the following: class User < ActiveRecord::Base has_many :books1, :books2, :books3, :books4, :books5 end class Books1 < ActiveRecord::Base belongs_to :user end class Books2 < ActiveRecord::Base belongs_to :user end First off, for each specific user, only one of the book tables would be usable/applicable, since all of a user's books are stored in the same table. So, only one of the associations would be in use at any time and any other has_many :bookX association that was loaded would be a waste. I don't really know Ruby/Rails does internally with all of those has_many associations though, so maybe it's not so bad. But right now I'm thinking that it's really wasteful, and that there may just be a better, more efficient way of doing this. Is there's some sort of special Ruby/Rails methodology that could be applied here to avoid having to have all of those has_many associations? Also, does anyone have any advice on how to abstract the fact that there's multiple book tables behind a single books model/class?

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• Electronic resources for learning Z/OS assembler?

  - by Jared

  This is a follow up to this question. I'm totally blind so printed books aren't an option. All the recommended books appear to have been published before electronic publishing got started. I've been able to learn the very basics but would like something between here's what a register is, and the IBM reference material. Searching the normal places like Safari Books Online has come up dry.

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