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• Redirect some URL requests to CloudFront and the rest direct to the normal server?

  - by indiehacker

  Say I have two types of URL requests that must be handled by my REST API: http://query.restapi.com/image.png?apikey=abc123 http://query.restapi.com/2.0/<apiKey>/resource.json?from=umi.us_census00.state_geometry Is it possible to redirect only some URL requests for static images (ie., regex: *.png?.*) to take advantage of CloudFront's caching and have the rest of the requests go directly to the normal EC2 server (or at least take a speedier indirect route to the normal EC2 server?). Perhaps the added request time for the misses to CloudFront is irrelevant to worry about? Or perhaps my situation is not best to use for CloudFront? I understand I will need to make DNS change where the current URL requests having http://query.restapi.com/some.png?apikey=0123 get redirected to http://d1234.cloudfront.net/some.png, but I am hoping there is some way for just redirecting static .png requests to take advantage of CloudFront?

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• My PowerShell functions do not appear to be registered

  - by Frank

  Hi there, I have a ps1 script in which I define 2 functions as such: function Invoke-Sql([string]$query) { Invoke-Sqlcmd -ServerInstance $Server -Database $DB -User $User -Password $Password -Query $query } function Get-Queued { Invoke-Sql "Select * From Comment where AwaitsModeration = 1" } I then call the ps1 file by typing it in (it's in a folder in the path, and autocompletion works) However, I cannot start using the functions. I am confused, because when I copy / paste the functions into the console, all is fine and they work. I also have a function defined in my profile, and it works. Where am I thinking wrong, why doesn't it work what I'm trying to do?

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• Limitations of the SharePoint join using CAML

  - by ybbest

  Limitation One In SharePoint 2010, you can join the primary list to a foreign list and include more than one field from the foreign list. However, the limitation is that the included fields from foreign list have to be the following type: Calculated (treated as plain text) ContentTypeId Counter Currency DateTime Guid Integer Note (one-line only) Number Text The above limitation also explains why you cannot include some types of the fields from the remote list when creating a lookup. Limitation Two When using CAML query to join SharePoint lists, there can be joins to multiple lists, multiple joins to the same list, and chains of joins. However, the limitations are only inner and left outer joins are permitted and the field in the primary list must be a Lookup type field that looks up to the field in the foreign list. Limitation Three The support for writing the JOIN query in CAML is very limited.I have to hand-code the CAML query to join the lists,not fun at all.Although some blogs post mentioned about using LINQ to SharePoint and get the CAML code from there , but I never get it to work.You can check this blog post  for this.Let me know if it works for you. References: http://msdn.microsoft.com/en-us/library/ee535502.aspx http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spquery.joins.aspx

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• How to generate the right password format for Apache2 authentication in use with DBD and MySQL 5.1?

  - by Walkman

  I want to authenticate users for a folder from a MySQL 5.1 database with AuthType Basic. The passwords are stored in plain text (they are not really passwords, so doesn't matter). The password format for apache however only allows for SHA1, MD5 on Linux systems as described here. How could I generate the right format with an SQL query ? Seems like apache format is a binary format with a lenght of 20, but the mysql SHA1 function return 40 long. My SQL query is something like this: SELECT CONCAT('{SHA}', BASE64_ENCODE(SHA1(access_key))) FROM user_access_keys INNER JOIN users ON user_access_keys.user_id = users.id WHERE name = %s where base64_encode is a stored function (Mysql 5.1 doesn't have TO_BASE64 yet). This query returns a 61 byte BLOB which is not the same format that apache uses. How could I generate the same format ? You can suggest other method for this too. The point is that I want to authenticate users from a MySQL5.1 database using plain text as password.

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• How to find source of 301/302 redirect loop? Heroku GoDaddy Zerigo

  - by user179288

  this should be a relatively simple problem but I'm having trouble.I hope this is the right forum to post on as I've seen people get booted off stack-overflow for this sort of thing. I've setup a web app on heroku (cedar stack) at my-web-app.herokuapp.com and I'm trying to direct my-domain.com and www.my-domain.com to it. As per instructions on the heroku documentation, I've set my-domain.com to redirect (forwarding) to www.my-domain.com and then set a C-Name from www.my-domain.com to my-web-app.herokuapp.com. But the C-Name doesn't seem to be working right and is sending back to my-domain.com, causing a loop and I can't work out why. I first configured these setting at GoDaddy.com where I registered the domain but then tried to avoid the problem by using Heroku's Zerigo DNS add-on, setting the nameservers on GoDaddy to the ones given for Zerigo. However the problem remains. Here is the output from dig for my-domain.com ("drop-circles.com"): ; <<>> DiG 9.3.2 <<>> any drop-circles.com ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 671 ;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 5 ;; QUESTION SECTION: ;drop-circles.com. IN ANY ;; ANSWER SECTION: drop-circles.com. 433 IN NS b.ns.zerigo.net. drop-circles.com. 433 IN NS d.ns.zerigo.net. drop-circles.com. 433 IN NS e.ns.zerigo.net. drop-circles.com. 433 IN NS a.ns.zerigo.net. drop-circles.com. 433 IN NS c.ns.zerigo.net. drop-circles.com. 433 IN SOA a.ns.zerigo.net. hostmaster.zerigo.com. 1372250760 10800 3600 604800 900 drop-circles.com. 433 IN A 64.27.57.29 drop-circles.com. 433 IN A 64.27.57.24 ;; ADDITIONAL SECTION: d.ns.zerigo.net. 68935 IN A 174.36.24.250 e.ns.zerigo.net. 69015 IN A 72.26.219.150 a.ns.zerigo.net. 72602 IN A 64.27.57.11 c.ns.zerigo.net. 69204 IN A 109.74.192.232 b.ns.zerigo.net. 70549 IN A 174.37.229.229 ;; Query time: 15 msec ;; SERVER: 194.168.4.100#53(194.168.4.100) ;; WHEN: Wed Jun 26 14:29:07 2013 ;; MSG SIZE rcvd: 293 Here is the output from dig for www.my-domain.com ("www.drop-circles.com"): ; <<>> DiG 9.3.2 <<>> any www.drop-circles.com ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1608 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.drop-circles.com. IN ANY ;; ANSWER SECTION: www.drop-circles.com. 407 IN CNAME drop-circles-website.herokuapp.com. ;; Query time: 19 msec ;; SERVER: 194.168.4.100#53(194.168.4.100) ;; WHEN: Wed Jun 26 14:29:15 2013 ;; MSG SIZE rcvd: 83 And from Fiddler if I use the inspector when I try either address I get a series of requests, with the my-domain.com ("drop-circles.com") looking like this: Request: GET http://drop-circles.com/ HTTP/1.1 Accept: text/html, application/xhtml+xml, */* Accept-Language: en-gb User-Agent: Opera/9.80 (Windows NT 5.1; U; Edition IBIS; Trident/5.0) Accept-Encoding: gzip, deflate Connection: Keep-Alive Host: drop-circles.com Response: HTTP/1.1 302 Found Server: nginx/0.8.54 Date: Wed, 26 Jun 2013 13:26:55 GMT Content-Type: text/html;charset=utf-8 Connection: keep-alive Status: 302 Found Location: http://www.drop-circles.com/ Content-Length: 113 <html><body>Redirecting to <a href="http://www.drop-circles.com/">http://www.drop-circles.com/</a></body></html> And the www.my-domain.com ("www.drop-circles.com") looking like this: Request: GET http://www.drop-circles.com/ HTTP/1.1 Accept: text/html, application/xhtml+xml, */* Accept-Language: en-gb User-Agent: Opera/9.80 (Windows NT 5.1; U; Edition IBIS; Trident/5.0) Accept-Encoding: gzip, deflate Connection: Keep-Alive Host: www.drop-circles.com Response: HTTP/1.1 301 Moved Permanently Content-Type: text/html Date: Wed, 26 Jun 2013 13:26:56 GMT Location: http://drop-circles.com/ Vary: Accept X-Powered-By: Express Content-Length: 104 Connection: keep-alive <p>Moved Permanently. Redirecting to <a href="http://drop-circles.com/">http://drop-circles.com/</a></p> Any and all help would be greatly appreciated. If it is not at all obvious from these readouts what it might be could someone at least tell me which company GoDaddy, Zerigo or Heroku should I go to for support since I don't really know enough to be able to say where the problem lies. Thank you.

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• SUM of metric for normalized logical hierarchy

  - by Alex254

  Suppose there's a following table Table1, describing parent-child relationship and metric: Parent | Child | Metric (of a child) ------------------------------------ name0 | name1 | a name0 | name2 | b name1 | name3 | c name2 | name4 | d name2 | name5 | e name3 | name6 | f Characteristics: 1) Child always has 1 and only 1 parent; 2) Parent can have multiple children (name2 has name4 and name5 as children); 3) Number of levels in this "hierarchy" and number of children for any given parent are arbitrary and do not depend on each other; I need SQL request that will return result set with each name and a sum of metric of all its descendants down to the bottom level plus itself, so for this example table the result would be (look carefully at name1): Name | Metric ------------------ name1 | a + c + f name2 | b + d + e name3 | c + f name4 | d name5 | e name6 | f (name0 is irrelevant and can be excluded). It should be ANSI or Teradata SQL. I got as far as a recursive query that can return a SUM (metric) of all descendants of a given name: WITH RECURSIVE temp_table (Child, metric) AS ( SELECT root.Child, root.metric FROM table1 root WHERE root.Child = 'name1' UNION ALL SELECT indirect.Child, indirect.metric FROM temp_table direct, table1 indirect WHERE direct.Child = indirect.Parent) SELECT SUM(metric) FROM temp_table; Is there a way to turn this query into a function that takes name as an argument and returns this sum, so it can be called like this? SELECT Sum_Of_Descendants (Child) FROM Table1; Any suggestions about how to approach this from a different angle would be appreciated as well, because even if the above way is implementable, it will be of poor performance - there would be a lot of iterations of reading metrics (value f would be read 3 times in this example). Ideally, the query should read a metric of each name only once.

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• What is the best approach for database design with lots of columns?

  - by Pratyush

  I am writing a query based financial application. It lets the user to write complicated equations (much like WHERE part of an SQL query) and find companies matching those criteria. For the above, I currently have more than 500 columns in the database table (each column representing a financial field). Example of Columns are: company_name, sales_annual_00, sales_annual_01, sales_annual_02, sales_annual_03, sales_annual_04, protit_annual_00, profit_annual1...(over 500 such columns). The number of rows is around 5000. Going forward, I would like to further increase the number of columns/financial-fields. For the above I would like to get help regarding: 1) What is the best database design approach? Is it ok to have these many number of columns? 2) How can it be normalized? (User can use any of these fields in search criteria). 3) Is it ok to stick with MySQL, or modern document based databases like MongoDB should be better for it? P.S. (Update): I have been using MySQL till now and a running example of the usage is at: http://screener.in/companies/89/Formula-- In above there around 500 fields/columns to create your query on, however, I seek to increase that number to much more in future.

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• The battle between Java vs. C#

  The battle between Java vs. C# has been a big debate amongst the development community over the last few years. Both languages have specific pros and cons based on the needs of a particular project. In general both languages utilize a similar coding syntax that is based on C++, and offer developers similar functionality. This being said, the communities supporting each of these languages are very different. The divide amongst the communities is much like the political divide in America, where the Java community would represent the Democrats and the .Net community would represent the Republicans. The Democratic Party is a proponent of the working class and the general population. Currently, Java is deeply entrenched in the open source community that is distributed freely to anyone who has an interest in using it. Open source communities rely on developers to keep it alive by constantly contributing code to make applications better; essentially they develop code by the community. This is in stark contrast to the C# community that is typically a pay to play community meaning that you must pay for code that you want to use because it is developed as products to be marketed and sold for a profit. This ties back into my reference to the Republicans because they typically represent the needs of business and personal responsibility. This is emphasized by the belief that code is a commodity and that it can be sold for a profit which is in direct conflict to the laissez-faire beliefs of the open source community. Beyond the general differences between Java and C#, they also target two different environments. Java is developed to be environment independent and only requires that users have a Java virtual machine running in order for the java code to execute. C# on the other hand typically targets any system running a windows operating system and has the appropriate version of the .Net Framework installed. However, recently there has been push by a segment of the Open source community based around the Mono project that lets C# code run on other non-windows operating systems. In addition, another feature of C# is that it compiles into an intermediate language, and this is what is executed when the program runs. Because C# is reduced down to an intermediate language called Common Language Runtime (CLR) it can be combined with other languages that are also compiled in to the CLR like Visual Basic (VB) .Net, and F#. The allowance and interaction between multiple languages in the .Net Framework enables projects to utilize existing code bases regardless of the actual syntax because they can be compiled in to CLR and executed as one codebase. As a software engineer I personally feel that it is really important to learn as many languages as you can or at least be open to learn as many languages as you can because no one language will work in every situation.  In some cases Java may be a better choice for a project and others may be C#. It really depends on the requirements of a project and the time constraints. In addition, I feel that is really important to concentrate on understanding the logic of programming and be able to translate business requirements into technical requirements. If you can understand both programming logic and business requirements then deciding which language to use is just basically choosing what syntax to write for a given business problem or need. In regards to code refactoring and dynamic languages it really does not matter. Eventually all projects will be refactored or decommissioned to allow for progress. This is the way of life in the software development industry. The language of a project should not be chosen based on the fact that a project will eventually be refactored because they all will get refactored.

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• SQL Management Studio is painfully slow on 32-bit Windows 7

  - by Sergei

  I've been having issues running anything in SQL Management Studio on Win 7. Basically, doing anything through the Management Studio interfaces completely freezes it up for a few minutes. Running a query is nearly impossible because it takes nearly 2 minutes just for the IDE to parse it and another minute to run it when the query itself completes instantaneously outside of the IDE. I'm not even going to go into the query designer. Anything with heavy user interaction such as editing a row in the result set where i have to click a cell freezes up the front-end. I tried reinstalling to no avail. Also tried running in compatibility mode without any difference whatsoever. Anybody had a similar experience? I'm running SQL Management Studio 2008 version 10.0.2531.0 on 32-bit Windows 7. Connecting to a remote SQL Server instance (2008 R2). Thanks.

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• SearchServer2008Express Search Webservice

  - by Mike Koerner

  I was working on calling the Search Server 2008 Express search webservice from Powershell.  I kept getting <ResponsePacket xmlns="urn:Microsoft.Search.Response"><Response domain=""><Status>ERROR_NO_RESPONSE</Status><DebugErrorMessage>The search request was unable to connect to the Search Service.</DebugErrorMessage></Response></ResponsePacket>I checked the user authorization, the webservice search status, even the WSDL.  Turns out the URL for the SearchServer2008 search webservice was incorrect.  I was calling $URI= "http://ss2008/_vti_bin/spsearch.asmx?WSDL"and it should have been$URI= "http://ss2008/_vti_bin/search.asmx?WSDL"Here is my sample powershell script:# WSS Documentation http://msdn.microsoft.com/en-us/library/bb862916.aspx$error.clear()#Bad SearchServer2008Express Search URL $URI= "http://ss2008/_vti_bin/spsearch.asmx?WSDL"#Good SearchServer2008Express Search URL $URI= "http://ss2008/_vti_bin/search.asmx?WSDL"$search = New-WebServiceProxy -uri $URI -namespace WSS -class Search -UseDefaultCredential $queryXml = "<QueryPacket Revision='1000'>  <Query >    <SupportedFormats>      <Format revision='1'>urn:Microsoft.Search.Response.Document.Document</Format>    </SupportedFormats>    <Context>      <QueryText language='en-US' type='MSSQLFT'>SELECT Title, Path, Description, Write, Rank, Size FROM Scope() WHERE CONTAINS('Microsoft')</QueryText>      <!--<QueryText language='en-US' type='TEXT'>Microsoft</QueryText> -->    </Context>  </Query></QueryPacket>" $statusResponse = $search.Status()write-host '$statusResponse:'  $statusResponse $GetPortalSearchInfo = $search.GetPortalSearchInfo()write-host '$GetPortalSearchInfo:'  $GetPortalSearchInfo $queryResult = $search.Query($queryXml)write-host '$queryResult:'  $queryResult

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• Introduction to WebCenter Personalization: &ldquo;The Conductor&rdquo;

  - by Steve Pepper

  There are some new faces in the town of WebCenter with the latest 11g PS3 release.  A new component has introduced itself as "Oracle WebCenter Personalization", a.k.a WCP, to simplify delivery of a personalized experience and content to end users.  This posting reviews one of the primary components within WCP: "The Conductor". The Conductor: This ain't just an ordinary cloud... One of the founding principals behind WebCenter Personalization was to provide an open client-side API that remains independent of the technology invoking it, in addition to independence from the architecture running it.  The Conductor delivers this, and much, much more. The Conductor is the engine behind WebCenter Personalization that allows flow-based documents, called "Scenarios", to be managed and executed on the server-side through a well published and RESTful api.      The Conductor also supports an extensible model for custom provider integration that can be easily invoked within a Scenario to promote seamless integration with existing business assets. Introducing the Scenario Conductor Scenarios are declarative offline-authored documents using the custom Personalization JDeveloper bundle included with WebCenter.  A Scenario contains one (or more) statements that can: Create variables that are scoped to the current execution context Iterate over collections, or loop until a specific condition is met Execute one or more statements when a condition is met Invoke other scenarios that exist within the same namespace Invoke a data provider that integrates with custom applications Once a variable is assigned within the Scenario's execution context, it can be referenced anywhere within the same Scenario using the common Expression Language syntax used in J2EE web containers. Scenarios are then published and tested to the Integrated WebLogic Server domain, or published remotely to other domains running WebCenter Personalization. Various Client-side Models The Conductor server API is built upon RESTful services that support a wide variety of clients able to communicate over HTTP.  The Conductor supports the following client-side models: REST:  Popular browser-based languages can be used to manage and execute Conductor Scenarios.  There are other public methods to retrieve configured provider metadata that can be used by custom applications. The Conductor currently supports XML and JSON for it's API syntax. Java: WebCenter Personalization delivers a robust and light-weight java client with the popular Jersey framework as it's foundation.  It has never been easier to write a remote java client to manage remote RESTful services. Expression Language (EL): Allow the results of Scenario execution to control your user interface or embed personalized content using the session-scoped managed bean.  The EL client can also be used in straight JSP pages with minimal configuration. Extensible Provider Framework The Conductor supports a pluggable provider framework for integrating custom code with Scenario execution.  There are two types of providers supported by the Conductor: Function Provider: Function Providers are simple java annotated classes with static methods that are meant to be served as utilities.  Some common uses would include: object creation or instantiation, data transformation, and the like.  Function Providers can be invoked using the common EL syntax from variable assignments, conditions, and loops. For example:  ${myUtilityClass:doStuff(arg1,arg2))} If you are familiar with EL Functions, Function Providers are based on the same concept. Data Provider: Like Function Providers, Data Providers are annotated java classes, but they must adhere to a much more strict object model.  Data Providers have access to a wealth of Conductor services, such as: Access to namespace-scoped configuration API that can be managed by Oracle Enterprise Manager, Scenario execution context for expression resolution, and more.  Oracle ships with three out-of-the-box data providers that supports integration with: Standardized Content Servers(CMIS),  Federated Profile Properties through the Properties Service, and WebCenter Activity Graph. Useful References If you are looking to immediately get started writing your own application using WebCenter Personalization Services, you will find the following references helpful in getting you on your way: Personalizing WebCenter Applications Authoring Personalized Scenarios in JDeveloper Using Personalization APIs Externally Implementing and Calling Function Providers Implementing and Calling Data Providers

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• System user authentication via web interface [closed]

  - by donodarazao

  Background: We have one pretty slow and expensive satellite Internet connection that is shared in a network with 5-50 users. To limit traffic, users shall pay a certain sum of money per hour. Routing and traffic accounting on user basis is done by a opensuse 10.3 server. Login is done via pppoe, and for each connection, username, bytes_sent, bytes_rcvd, start_time, end_time,etc are written into a mysql database. Now it was decided that we want to change from time-based to volume-based pricing. As the original developer who installed the system a couple of years ago isn't available, I'm trying to do the changes. Although I'm absolutely new to all this, there is some progress. However, there's one point I'm absolutely stuck. Up to now, only administrators can access connection details and billing information via a web interface. But as volume-based prices are less transparent to users than time-based prices, it is essential that users themselves can check their connections and how much they cost via the web interface. For this, we need some kind of user authentication. Actual question: How to develop such a user authentication? Every user has a linux system user account. With this user name and password, connection to the pppoe-server is made by the client machines. I thought about two possibles ways to authenticate users: First possibility: Users type username and password in a form. This is then somehow checked. We already have to possibilities to change passwords via the web interface. Here are parts of the code: Part of the Perl script the homepage is linked to: #!/usr/bin/perl use CGI; use CGI::Carp qw(fatalsToBrowser); use lib '../lib'; use own_perl_module; my @error; my $data; $query = new CGI; $username = $query->param('username') || ''; $oldpasswd = $query->param('oldpasswd') || ''; $passwd = $query->param('passwd') || ''; $passwd2 = $query->param('passwd2') || ''; own_perl_module::connect(); if ($query->param('submit')) { my $benutzer = own_perl_module::select_benutzer(username => $username) or push @error, "user not exists"; push @error, "your password?!?" unless $passwd; unless (@error) { own_perl_module::update_benutzer($benutzer->{id}, { oldpasswd => $oldpasswd, passwd => $passwd, passwd2 => $passwd2 }, error => \@error) and push @error, "Password changed."; } } Here's part of the sub update_benutzer in the own_perl_module: if ($dat-{passwd} ne '') { my $username = $dat-{username} || $select-{username}; my $system = "./chpasswd.pl '$username' '$dat-{passwd}'" . (defined($dat-{oldpasswd}) ? " '$dat-{oldpasswd}'" : undef); my $answer = $system; if ($? != 0) { chomp($answer); push @$error, $answer || "error changing password ($?)"; Here's chpasswd.pl: #!/usr/bin/perl use FileHandle; use IPC::Open3; local $username = shift; local $passwd = shift; local $oldpasswd = shift; local $chat = { 'Old Password: $' => sub { print POUT "$oldpasswd\n"; }, 'New password: $' => sub { print POUT "$passwd\n"; }, 'Re-enter new password: $' => sub { print POUT "$passwd\n"; }, '(.*)\n$' => sub { print "$1\n"; exit 1; } }; local $/ = \1; my $command; if (defined($oldpasswd)) { $command = "sudo -u '$username' /usr/bin/passwd"; } else { $command = "sudo /usr/bin/passwd '$username'"; } $pid = open3(\*POUT, \*PIN, \*PERR, $command) or die; my $buffer; LOOP: while($_ = <PERR>) { $buffer .= $_; foreach (keys(%$chat)) { if ($buffer =~ /$_/i) { $buffer = undef; &{$chat->{$_}}; } } } exit; Could this somehow be adjusted to verify users, but not changing user passwords? The second possibility I see: all pppoe connections are logged in the mysql database. If I could somehow retrieve the username (or uid) of the user connected by pppoe, this could be used to authenticate users. Users could only check their internet connections and costs when they are online (and thus paying money), but this could be tolerated. Here's a line of the script that inserts connections into the database: my $username = $ENV{PEERNAME}; I thought it would be easy to use this variable, but $username seems to be always empty in test-scripts (print $username). Any idea how to retrieve the user connected to the pppoe server? Sorry for the long question! Any help would be very much appreciated. :)

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• Sql Server 2008 Create Foreign Key Manually

  - by tgriffiths

  I have inherited an old database which wasn't designed very well. It is a Sql Server 2008 database which is missing quite a lot of Foreign Key relationships. Below shows two of the tables, and I am trying to manually create a FK relationship between dbo.app_status.status_id and dbo.app_additional_info.application_id I am using SQL Server Management Studio when trying to create the relationship using the query below USE myDatabase; GO ALTER TABLE dbo.app_additional_info ADD CONSTRAINT FK_AddInfo_AppStatus FOREIGN KEY (application_id) REFERENCES dbo.app_status (status_id) ON DELETE CASCADE ON UPDATE CASCADE ; GO However, I receive this error when I run the query The ALTER TABLE statement conflicted with the FOREIGN KEY constraint "FK_AddInfo_AppStatus". The conflict occurred in database "myDatabase", table "dbo.app_status", column 'status_id'. I am wondering if the query is failing because each table already contains approximately 130,000 records? Please help. Thanks.

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• MySQL com_select?

  - by symcbean

  I'm looking to tune my query cache a bit. According to 7.6.3.4. Query Cache Status and Maintenance in the manual: The Com_select value is given by this formula: Qcache_inserts + Qcache_not_cached + queries with errors found during the column-privileges check However in 5.1.5. Server Status Variables it suggests that this is maintained by the DBMS. Having said that mysql> show status like 'Com_select%'; Always returns a value of 1 - and I'm pretty sure I've run more than one non-cached select query on my database since it started. It looks as if other people are similarly confused. Is this status variable redundant? Which bit of the manual is wrong? TIA

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• fastcgi-mono-server with Nginx is much slower than xsp4

  - by marxin

  We started testing our MVC4 app on xsp4 server compiled with mono-3.0.3, speed was enough and we decided to set up production fastcgi-mono-server4 (version 2.11.0.0) with nginx (1.2.6-r1). Single query that loads some JSON query took ~200ms on XSP4, but Nginx serves the query in about 1.2s and I am wondering where could be such a slow down? I followed nginx configuration: http://www.mono-project.com/FastCGI_Nginx and fastcgi-mono-server4 uses socket for listening nginx. Do you have any ideas how to log some time stamp which will help me? Thanks

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• MySQL Workbench 5.2.39 GA Released

  - by user13164789

  The MySQL Developer Tools team is announcing the next maintenance release of its flagship product, MySQL Workbench, version 5.2.39. This version contains MySQL Utilities 1.0.5, a set of command line Python utilities for helping to perform and script various administration tasks for MySQL. A complete list of changes in this release of the Utilities can be found at:http://dev.mysql.com/doc/workbench/en/wb-utils-news-1-0-5.html MySQL Workbench 5.2 GA • Data Modeling • Query (replaces the old MySQL Query Browser) • Administration (replaces the old MySQL Administrator) Please get your copy from our Download site. Sources and binary packages are available for several platforms, including Windows, Mac OS X and Linux. http://dev.mysql.com/downloads/workbench/ Workbench Documentation can be found here. http://dev.mysql.com/doc/workbench/en/index.html Utilities Documentation can be found here.http://dev.mysql.com/doc/workbench/en/mysql-utilities.html In addition to the new Query/SQL Development and Administration modules, version 5.2 features improved stability and performance – especially in Windows, where OpenGL support has been enhanced and the UI was optimized to offer better responsiveness. This release also includes improvements to the scripting capabilities of the SQL Editor. You can read more about it in http://wb.mysql.com/workbench/doc/ For a detailed list of resolved issues, see the change log. http://dev.mysql.com/doc/workbench/en/wb-change-history.html If you need any additional info or help please get in touch with us. Post in our forums or leave comments on our blog pages. - The MySQL Workbench Team

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• Create an array from mysql with column names and values [on hold]

  - by ScaZ

  i'm trying to create an array with PHP and MySQL, but i always get errors. The code i'm using function db_listar_usuarios(){ $link=db_connect(); $query = "select * from usuarios" or die("Problemas en el select: " . mysqli_error($link)); $result = $link->query($query); while($row = mysqli_fetch_assoc($result)) { $row['nombre'] . array(; foreach ($row as $col => $val) { $col => $val; } } } And what I want to create with this code is: array( 'john' => array('address' => 'st 123', 'age' => '25', 'surname' => 'doe'), 'ane' => array('address' => 'av 456', 'age'=> '32', 'surname' => 'smith'), ); To use then like something like this: private $contacts = db_listar_usuarios(); I use 2 files: functions.php and server.php server.php is a downloaded file example to do a REST API. Here are both of them. server.php - pastebin.com/5j54m1Mz functions.php - pastebin.com/N7jMhSBa Thank you in advance!

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• Finding Locked Out Users

  - by Bart Silverstrim

  Active Directory up to 2008 network (our servers are a mix of 2008, 2003...) I'm looking for a quick way to query AD to find out what users are locked out, preferably from a batch or script file, to monitor for possible issues with either user accounts being attacked by an automated attack or just anomalies in the network. I've Googled and my Google-fu has failed; I found a query off Microsoft's own knowledgebase that cites a string to use on Server 2003 with the management snap-in's saved queries (http://support.microsoft.com/kb/555131) but when I entered it, the query returned 400 users that a spot-check showed did NOT have a checkmark in the "Account is locked out" box under "account." In fact, I don't see anything wrong with their accounts. Is there a simple utility (wisesoft bulkadusers apparently uses this method behind the scenes, since it's results were also wrong) that will give a count of users and possibly their user object names? Script? Something?

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• MVC pattern synchronisation

  - by Hariprasad

  I am facing a problem in synchronizing my model and view threads I have a view which is table. In it, user can select a few rows. I update the view as soon as the user clicks on any row since I don't want the UI to be slow. This updating is done by a logic which runs in the controller thread below. At the same time, the controller will update the model data too, which takes place in a different thread. i.e., controller puts the query in a queue, which is then executed by the model thread - which is a single-threaded interface. As soon as the query executes, controller will get a signal. Now, In order to keep the view and model synchronized, I will update the view again based on the return value of the query (the data returned by model) - even though I updated the view already for that user action. But, I am facing issues because, its taking a lot of time for the model to return the result, by that time user would have performed multiple clicks. So, as a result of updating the view again based on the information from model, the view sometimes goes back to the state in which the previous clicks were made (Suppose user clicks thrice on different rows. I update the view as soon as the click happens. Also, I update the view when I get data back from the model - which is supposed to be same as the already updated state of the view. Now, when the user clicks third time, I get data for the first click from model. As a result, view goes back to a state which is generated by the first click) Is there any way to handle such a synchronization issue?

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• Using Queries with Coherence Write-Behind Caches

  - by jpurdy

  Applications that use write-behind caching and wish to query the logical entity set have the option of querying the NamedCache itself or querying the database. In the former case, no particular restrictions exist beyond the limitations intrinsic to the Coherence query engine itself. In the latter case, queries may see partially committed transactions (e.g. with a parent-child relationship, the version of the parent may be different than the version of the child objects) and/or significant version skew (the query may see the current version of one object and a far older version of another object). This is consistent with "read committed" semantics, but the read skew may be far greater than would ever occur in a non-cached environment. As is usually the case, the application developer may choose to accept these limitations (with the hope that they are sufficiently infrequent), or they may choose to validate the reads (perhaps via a version flag on the objects). This also applies to situations where a third party application (such as a reporting tool) is querying the database. In many cases, the database may only be in a consistent state after the Coherence cluster has been halted.

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• Broken Views

  - by Ajarn Mark Caldwell

  “SELECT *” isn’t just hazardous to performance, it can actually return blatantly wrong information. There are a number of blog posts and articles out there that actively discourage the use of the SELECT * FROM …syntax.  The two most common explanations that I have seen are: Performance:  The SELECT * syntax will return every column in the table, but frequently you really only need a few of the columns, and so by using SELECT * your are retrieving large volumes of data that you don’t need, but the system has to process, marshal across tiers, and so on.  It would be much more efficient to only select the specific columns that you need. Future-proof:  If you are taking other shortcuts in your code, along with using SELECT *, you are setting yourself up for trouble down the road when enhancements are made to the system.  For example, if you use SELECT * to return results from a table into a DataTable in .NET, and then reference columns positionally (e.g. myDataRow[5]) you could end up with bad data if someone happens to add a column into position 3 and skewing all the remaining columns’ ordinal position.  Or if you use INSERT…SELECT * then you will likely run into errors when a new column is added to the source table in any position. And if you use SELECT * in the definition of a view, you will run into a variation of the future-proof problem mentioned above.  One of the guys on my team, Mike Byther, ran across this in a project we were doing, but fortunately he caught it while we were still in development.  I asked him to put together a test to prove that this was related to the use of SELECT * and not some other anomaly.  I’ll walk you through the test script so you can see for yourself what happens. We are going to create a table and two views that are based on that table, one of them uses SELECT * and the other explicitly lists the column names.  The script to create these objects is listed below. IF OBJECT_ID('testtab') IS NOT NULL DROP TABLE testtabgoIF OBJECT_ID('testtab_vw') IS NOT NULL DROP VIEW testtab_vwgo IF OBJECT_ID('testtab_vw_named') IS NOT NULL DROP VIEW testtab_vw_namedgo CREATE TABLE testtab (col1 NVARCHAR(5) null, col2 NVARCHAR(5) null)INSERT INTO testtab(col1, col2)VALUES ('A','B'), ('A','B')GOCREATE VIEW testtab_vw AS SELECT * FROM testtabGOCREATE VIEW testtab_vw_named AS SELECT col1, col2 FROM testtabgo Now, to prove that the two views currently return equivalent results, select from them. SELECT 'star', col1, col2 FROM testtab_vwSELECT 'named', col1, col2 FROM testtab_vw_named OK, so far, so good.  Now, what happens if someone makes a change to the definition of the underlying table, and that change results in a new column being inserted between the two existing columns?  (Side note, I normally prefer to append new columns to the end of the table definition, but some people like to keep their columns alphabetized, and for clarity for later people reviewing the schema, it may make sense to group certain columns together.  Whatever the reason, it sometimes happens, and you need to protect yourself and your code from the repercussions.) DROP TABLE testtabgoCREATE TABLE testtab (col1 NVARCHAR(5) null, col3 NVARCHAR(5) NULL, col2 NVARCHAR(5) null)INSERT INTO testtab(col1, col3, col2)VALUES ('A','C','B'), ('A','C','B')goSELECT 'star', col1, col2 FROM testtab_vwSELECT 'named', col1, col2 FROM testtab_vw_named I would have expected that the view using SELECT * in its definition would essentially pass-through the column name and still retrieve the correct data, but that is not what happens.  When you run our two select statements again, you see that the View that is based on SELECT * actually retrieves the data based on the ordinal position of the columns at the time that the view was created.  Sure, one work-around is to recreate the View, but you can’t really count on other developers to know the dependencies you have built-in, and they won’t necessarily recreate the view when they refactor the table. I am sure that there are reasons and justifications for why Views behave this way, but I find it particularly disturbing that you can have code asking for col2, but actually be receiving data from col3.  By the way, for the record, this entire scenario and accompanying test script apply to SQL Server 2008 R2 with Service Pack 1. So, let the developer beware…know what assumptions are in effect around your code, and keep on discouraging people from using SELECT * syntax in anything but the simplest of ad-hoc queries. And of course, let’s clean up after ourselves.  To eliminate the database objects created during this test, run the following commands. DROP TABLE testtabDROP VIEW testtab_vwDROP VIEW testtab_vw_named

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• Google Currency Convertor JSON API

  - by Gopinath

  There are many live currency conversion services available on the web and the popular one’s among them are – Google, Yahoo, MSN & XE. Among all these four Google is the developer’s darling and it provides a simple JSON API that can be integrated in your applications.  http://www.google.com/ig/calculator?hl=en&q=1USD=?INR Using the API is very simple and it takes two parameters as input. The first parameter “hl” is the language code in which you want output. The second parameter “q” is the conversion query in the format <number><from currency code>=?<to currency code>. In the URL give above the query requests for conversion of 1 USD in INR. JSON output for the above query would be  similar to {lhs: "1 U.S. dollar",rhs: "54.4602984 Indian rupees",error: "",icc: true} Examples: 100 USD in INR  http://www.google.com/ig/calculator?hl=en&q=100USD=?INR Example 2: 1 GBP in INR http://www.google.com/ig/calculator?hl=en&q=1GBP=?INR Example 3: 1 USD in INR, output the data in French language http://www.google.com/ig/calculator?hl=fr&q=1USD=?INR   This is an undocumented service and expect changes at any time. But as long as it works, you got a programmatic way to convert currencies.

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• Cross domain LDAP

  - by Adam

  For a system we are developing we have 2 domains an internal and an external domain with bi directional trust between them. However the servers are only able to connect to their own DC's. We have an application server on the internal domain which needs to use an LDAP query to gather a list of users from a group on the external domain. How do i go about writing an LDAP query that asks one DC to go ask another DC for a list of users. I tried querying the internal DC with the same LDAP query I would use if it could hit the external DC directly but this does not work. When i use Softerra LDAP Administraor I can view the full hierarchy of the interal domain but despite the trust relationship between domains i am unable to see any of the external doamin. Any suggestions or help would be greatly appreciated

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• Best approach for tracking dependent state

  - by Pace

  Let's pretend I work on a project tracking application. The application is a database backed, server hosted, web application. In this application there are Projects which have many Activities which have many Tasks. A Task has two date fields an originalDueDate and a projectedDueDate. In addition, there are dynamic fields on the Activities and the Projects which indicate whether the Activity or Project is behind schedule based on the projected due dates of the child tasks and various other variables such as remaining buffer time, etc. There are a number of things that can cause the projectedDueDate to change. For example, an employee working on the project may (via a server request) enter in a shipping delay. Alternatively, a site may (via a server request) enter in an unexpected closure. When any of these things occur I need to not only update the projectedDueDate of the Task but also trigger the corresponding Project and Activity to update as well. What is the best way to do this? I've thought of the observer pattern but I don't keep a single copy of all these objects in memory. When a request comes in, I query the Task in from the database, at that point there is no associated Activity in memory that would be a listener. I could remove the ability to query for Tasks and force the application to query first by Project, then by Activity (in context of Project), then by task (in context of Activity) adding the observer relationships at each step but I'm not sure if that is the best way. I could setup a database event listening system so when a Task modified event is dispatched I have a handler which queries for the Activity at that point. I could simply setup a two-way relationship between Task and Activity so that the Task knows about the parent Activity and when the Task updates his state the Task grabs his parent and updates state. Right now I'm stuck considering all the options and am wondering if any single approach (doesn't have to be a listed approach) is jumping out at others as the best approach.

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• Need help for array when no checkbox is selected [closed]

  - by darlene

  Hi guys I have created a form that has checkboxes, the code works great when a checkbox is selcted however when no checkboxes are selected I get errors such as "Undefined index: onemon in and Warning: Invalid argument supplied for foreach()" Please help:) FORM 1. Had a cold, fever or headache? input type="checkbox" name="onemon[]" value="q1" if(isset($_GET['onemon']) && $_GET['onemon']= "q1") 2. Had dental extractions or teeth cleaning? input type="checkbox" name="onemon[]" value="q2" if(isset($_GET['onemon']) && $_GET['onemon']= "q2") 3. Had minor outpatient sugery? input type="checkbox" name="onemon[]" value="q3" if(isset($_GET['onemon']) && $_GET['onemon']= "q3") 4. Had any vaccines? input type="checkbox" name="onemon[]" value="q4" if(isset($_GET['onemon']) && $_GET['onemon']= "q4") PHP $date = date('Y-m-d'); $onemon = $_POST ['onemon']; { $con = mysql_connect("localhost","root","") or die ("Could not connect to DB Server"); $db_selected = mysql_select_db("nbtsdb", $con) or die("Could not locate the DB"); // You have to loop through the array of checked box values ... $ques=""; foreach($onemon as $entry){ $ques .= $entry.","; } //$addPersonalSql holds the insert SQL query string $query = "INSERT INTO defferal(defid, intdate, onemonth) VALUES('','$date','$ques')"; $addMemberSql = $query or die ("Unable to Insert Data into defferal Table"); mysql_query($addMemberSql); }

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