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• GWT Editor: How to set last modified time on the entity when saved?

  - by Mike

  Suppose at client side i have an Entity proxy to edit by the UI and when i click save button, the last modified time is save in the entity as a field. //start MyEntityProxy proxy = getProxy();//fetched from server Request<Void> saveRequest = requestFact.myEntityProxyRequest().save(proxy); editorDriver.edit(proxy, saveRequest.getRequestContext()); editorDriver.flush(); //user modifies UI .... //save editorDriver.flush(); saveRequest.fire(); The problem is, where to insert the proxy.setLastModifiedTime(data) call? I always got java.lang.IllegalStateException: The AutoBean has been frozen. Thanks.

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• how to get option title="sample" using jquery

  - by tom

  Hi, I'm trying to update a hidden field based on the a title attribute on a select option, I've tried the code bellow and can't seem to get it to work. Thanks for any help! <form> <select id="selectbox"> <option name="test" value="one" title="title" selected="selected">one</option> <option name="test2" value="two" title="title2">two</option> </select> </form> <input id="update" type="hidden" value="defaultold" /> <script> $('#update').val('default'); $('#selectbox').change(function() { $('#update').val($(this).attr("title")); }); </script>

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• using dummy row with NOT NULL to solve DEFAUT NULL

  - by Tony38

  I know having DEFAULT NULLS is not a good practice but I have many optional lookup values which are FK in the system so to solve this issue here is what i am doing: I use NOT NULL for every FK / lookup valve field. I have the first row in every table which is PK id = 1 as a dummy row with just "none" in all the columns. this way I can use NOT NULL in my schema and if needed reference to the none row values which should be null. Is this a good design or any other work arounds?

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• MySQL COUNT() multiple columns

  - by liam

  Hello, I'm trying to fetch the most popular tags from all videos in my database (ignoring blank tags). I also need the 'flv' for each tag. I have this working as I want if each video has one tag: SELECT tag_1, flv, COUNT(tag_1) AS tagcount FROM videos WHERE NOT tag_1='' GROUP BY tag_1 ORDER BY tagcount DESC LIMIT 0, 10 However in my database, each video is allowed three tags - tag_1, tag_2 and tag_3. Is there a way to get the most popular tags reading from multiple columns? The record structure is: +-----------------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-----------------+--------------+------+-----+---------+----------------+ | id | int(11) | NO | PRI | NULL | auto_increment | | flv | varchar(150) | YES | | NULL | | | tag_1 | varchar(75) | YES | | NULL | | | tag_2 | varchar(75) | YES | | NULL | | | tag_3 | varchar(75) | YES | | NULL | | +-----------------+--------------+------+-----+---------+----------------+

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• StringListProperty limited to 500 char strings (Google App Engine / Python)

  - by MarcoB

  It seems that StringListProperty can only contain strings up to 500 chars each, just like StringProperty... Is there a way to store longer strings than that? I don't need them to be indexed or anything. What I would need would be something like a "TextListProperty", where each string in the list can be any length and not limited to 500 chars. Can I create a property like that? Or can you experts suggest a different approach? Perhaps I should use a plain list and pickle/unpickle it in a Blob field, or something like that? I'm a bit new to Python and GAE and I would greatly appreciate some pointers instead of spending days on trial and error...thanks!

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• Passing NULL values into mysql Stored procedure

  - by McNabbToSkins

  I am trying to pass a few NULL values to a stroed procedure but PHP always retains the varaibles to be empty strings '' and not NULL. My DB insert function looks like this. (I am using a Framework and ADODB so if it looks weird thats why). function insert_emp($f_name, $last_name, $dob) { if(!isset($dob)){ $dob = NULL; } $this->DB->setConnection("CALL insert_emp('$f_name', '$l_name', '$dob')"); } I have ensured that $dob is being passed an empty string ''. But for some reason when it calls the stored proc it is not changed to NULL. dob is a datetime field and mysql complains that you can not enter an empty string as a DATETIME. If I hard code the insert such as this $this->DB->setConnection("CALL insert_emp('Test1', 'Test2', 'NULL')"); it will work. Thanks for the help.

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• Update 2 table values in one query in LINQ

  - by fireBand

  Hello, I have 2 tables Table1 with columns [BId,Name,Amount] Table2 with columns [CId,BId, ExpenseType,Expense]. BId Is the foreign key in Table2. The Amount field in Table1 is always higher than Expense in Table2. I need to update the values of Amount (increase or decrease) based on value of Expense and I want to do it in single query in LINQ. Eg If the Expense has to be updated with 200, I would decrease(negate) Amount value with 200. If Expense is reduce to 100 then the Amount is increased by a value of 100. Thanks in advance for any suggestions.

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• I'm a PHP programmer, how easy will it be to "master" c++?

  - by ThinkingInBits

  I've been a PHP programmer for 8 or so years, I'm familiar with OOP and try to consider best practices whenever programming. I would like to pick up C++ to possibly enter the 'game development' field, where now I'm doing web dev. I'm not a school person, but was wondering what people think about self-taught math to complement learning c++ for game dev. The last math course I took was algebra 2. Should I start delving myself into pre-calculus? Are there any other suggestions you may have to ease the process?

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• DB fields not showing up in association custom queries?

  - by Kevin

  I have a notification list that the user can select different show options for different kinds of notifications along with how many results are returned. I'm keeping them in the user model because I want the custom sort to stay with the user between sessions. Here is the association in my user model: has_many :notifications, :class_name => "Notification", :foreign_key => "user_id", :conditions => ["won = ? and lost = ? and paid = ?", self.prefs_won, self.prefs_lost, self.prefs_paid], :limit => self.prefs_results.to_s But when I use the above code, Rails throws me an "unknown method" error for self.prefs_won. It is definitely a field in my database and set as a boolean value, but Rails can't find it... what's the problem?

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• If I had to create a server farm what should I do? (how others companies work?)

  - by Michel

  I have a business idea but this is not really my field so I'm trying to understand what I'm really dealing with. I have a general understanding of how a web farm works, I'm a web developer and I understand the technology behind it, but I'm curious to know specifically how a web farm is set up and which professionals are involved. Things to consider probably are the hardware, the power supply, the software managment, the cooling system and if possible the usage of green technology/power recycling. Basically, can you explain me how a web hosting company is structured and how it works? A big question, I know, but from what I already read here about the subject a lot of you know this stuff. Thanks for your time guys!

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• How to test Guice Singleton?

  - by 01

  Guice Singletons are weird for me First I thought that IService ser = Guice.createInjector().getInstance(IService.class); System.out.println("ser=" + ser); ser = Guice.createInjector().getInstance(IService.class); System.out.println("ser=" + ser); will work as singleton, but it returns ser=Service2@1975b59 ser=Service2@1f934ad its ok, it doesnt have to be easy. Injector injector = Guice.createInjector(); IService ser = injector.getInstance(IService.class); System.out.println("ser=" + ser); ser = injector.getInstance(IService.class); System.out.println("ser=" + ser); works as singleton ser=Service2@1975b59 ser=Service2@1975b59 So i need to have static field with Injector(Singleton for Singletons) how do i pass to it Module for testing?

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• How to determine the radius and center of a circle when only three noncollinear points are known?

  - by Bob

  I'm working on a C# program that deals with Oracle Spatial geometry. When circle data is stored in a geometry field only three non-collinear points are stored to represent the circle. The problem is that I need to use this data on a Google Maps web page and need the center point and radius of the circle (since my circle drawing function uses that information). Can anyone help with the math involved and translating said math to C#? I think this page may hold the answer, but I'm having a hard time following it. There are formulas for radius and center given three points, but then they define the variables as matrices and I get lost at that point. How would I solve that in code?

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• Data storage advice needed: Best way to store location + time data?

  - by sobedai

  I have a project in mind that will require the majority of queries to be keyed off of lat/long as well as date + time. Initially, I was thinking of a standard RDBMS where lat, long, and the datetime field are properly indexed. Then, I began thinking of a document based system where the document was essentially a timestamp and each document has lat/long with in it. Each document could have n objects associated with it. I'm looking for advice on what would be the best type of storage engine for this sort of thing is - which of the above idea would be better or if there is something else completely that is the ideal solution. Thanks

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• mysql stored routine vs. mysql-alternative?

  - by user522962

  We are using a mysql database w/ about 150,000 records (names) total. Our searches on the 'names' field is done through an autocomplete function in php. We have the table indexed but still feel that the searching is a bit sluggish (a few full seconds vs. something like Google Finance w/ near-instant response). We came up w/ 2 possibilities, but wanted to get more insight: Can we create a bunch (many thousands or more) of stored procedures to speed up searches, or will creating that many stored procedures bog-down the db? Is there a faster alternative to mysql for "select" statements (speed on inserting & updating rows isn't too important so we can sacrifice that, if necessary). I've vaguely heard of BigTable & others that don't support JOIN statements....we need JOIN statements for some of our other queries we do. thx

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• How to concatinate text on existing database entry?

  - by Starx

  I am a table, whose structure is somewhat like this id, name, link the link holds the name of the page like "link" = "index.php". Now I want to update this field and add "page=" in front of "index.php". Using this method I would like to update every entry in my table. My desired SQL syntax need to be something like this UPDATE mytable set link= 'page=' + <existing value of link> WHERE 1; I am using Where 1; to denote every other rows Anyone know what to accomplish this?

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• Joomla 2.5 disable and remove Smart Cache

  - by WooDzu

  I am maintaining a Joomla 2.5 based magazine website with 3-4 new, long articles every day. Smart Search was enabled by default and now I've got a few "finder" tables full of indexed phrases and therms. I wonder if there are any disadvantages if I'd: Disable the Smart Search plugin Remove these 'finder' tables completely Aha, we're using a Search field, which works fine, but I'm not sure what's going to happen if I disable the plugin and remove these tables. Will it then search for phrases in content Joomla tables or simply break w/o missing 'finder' tables Has anyone tried this before?

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• Drupal, template.php where do the $form names come from ?

  - by Patrick

  hi, I want to customize my Drupal back-end forms. I'm using template.php file.. i.e. $form['menu']['#collapsed'] = true; $form['author']['#collapsed'] = true; $form['buttons']['#weight'] = 100; But I was wondering from where the section names (menu, author, buttons), come from. (They are not id or classes in html code, so I guess there is an index with all names stored somewhere. Where can I get the complete list of section names ? Furthermore, I've added a taxonomy-super-select-checkboxes section by installing the module. How can I refer to this section, to make the field not collapsed. thanks

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• Aggregation over a few models - Django

  - by RadiantHex

  Hi folks, I'm trying to compute the average of a field over various subsets of a queryset. Player.objects.order_by('-score').filter(sex='male').aggregate(Avg('level')) This works perfectly! But... if I try to compute it for the top 50 players it does not work. Player.objects.order_by('-score').filter(sex='male')[:50].aggregate(Avg('level')) This last one returns the exact same result as the query above it, which is wrong. What am I doing wrong? Help would be very much appreciated!

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• Regular Expression for exclude something that has specific word inside bracked (MySQL)

  - by bn

  This Regular expression if for MySQL query: I want to exclude this row because it has 'something' in side the bracket "bla bla bla bla bla bla (bla bla bla something)" However I want to include this row, because it does not have 'something' inside the bracket "bla bla bla (bla bla bla)" I tried this query but it didnt work. SELECT * FROM table WHERE field NOT REGEXP '((%something%))'; I think this is wrong, I just did trial and error, I like to use regular expression, but never understand it completely. is there any good tutorial/books/links for learning the detail of regular expression? Thank You

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• php mail send form question?

  - by eberswine

  Wondering if anyone know how to automatically send the user an email after he/she fills out a form. I have the form emailed to me after it gets submitted, but I can't figure out how to capture the user's email from the form field and have it send it to them automatically??? Here is some code that I use to send the mail: //mail the message before redirecting if($_POST['dosend'] == "yes"){ // The message $headers = "From: [email protected]"; $message = "NEW Message :: ".$_POST['event_name']." \n Email: ".$_POST['email']." \n Click link to http://www.domain.com/admin/ Approve this Event!"; // Send mail('[email protected]', 'New :: Calendar Message', $message, $headers); } //end mail

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• Parsing a string to date gives 01/01/0001 00:00:00

  - by kawtousse

  String dateimput=request.getParameter("datepicker"); System.out.printl("datepicker:" +dateimput); DateFormat df = new SimpleDateFormat("MM/dd/yyyy"); Date dt = null; try { dt = df.parse(dateimput); System.out.println("date imput is:" +dt); } catch (ParseException e) { e.printStackTrace(); } *datepicker:04/29/2010 (value I currently selected from datepicker). *the field in database is typed date. 1-date imput is:Thu Apr 29 00:00:00 CEST 2010 and in database level it is inserted like that 01/01/0001 00:00:00

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• Javascript - Simple form script to hide/show fields

  - by danit

  Im looking for a simple script in javascript that i can extend, at a basic level Im looking to show 1 field based on which option from a <select> the user chooses. <select id="options"> <option value="spoon">Spoon</option> <option value="form">Fork</option> </select> if select=spoon { <input>enter your favorite soup</input> } else { <input>Your gonna need a knife</input> } Simple JS is the key!

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• Programatically creating site using custom template

  - by dexter

  hi, Help plz! How can I make a webpart that has a button called "Create Site" and it programatically create a site (using my own custom template e.g. Mytemplate.STP) ? The reason is of such task is, I dont want user to go into "Sites Action" - create Site - and then fill the whole form. I want to give a user an easy interface with only title field, the rest i want to be done programatically. Any other suggestions or work arounds are also appreciated. Thank you

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• Index out of range exception when using this query from C#

  - by jenifa

  I am using a calculation in my SQL query. How can I use that calculated field in C#? When I try, I get an index out of range exception. My query is: Select OwnerCompanyLog.olog_name,inlt_companyid,inlt_childcompid,inlt_effectinterest,inlt_percent,inlt_sharetype,inlt_shares,inlt_childbase,inlt_effdate, (inlt_percent * inlt_effectinterest)/100)eff from InterestLogTable INNER JOIN OwnerCompanyLog ON InterestLogTable.inlt_childcompid = OwnerCompanyLog.olog_companyid where inlt_companyid=5 Order By inlt_childcompid I want to use inlt_percent * inlt_effectinterest)/100 in my C# code: entity.ParentCompany = new List<Company>(); while (parentCompanyReader.Read()) { ParentCompany.Effect = parentCompanyReader["eff"].ToString(); entity.ParentCompany.Add(ParentCompany); } parentCompanyReader.Close(); But I got the error above.

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• parallel.foreach with custom collection

  - by SchwartzE

  I am extending the System.Net.Mail.MailAddress class to include an ID field, so I created a new custom MailAddress class that inherited from the existing class and a new custom MailAddressCollection class. I then overrode the existing System.Net.Mail.MailMessage.To to use my new collection. I would like to process the recipients in parallel, but I can't get the syntax right. This is the syntax I am using. Parallel.ForEach(EmailMessage.To, (MailAddress address) => { emailService.InsertRecipient(emailId, address.DisplayName, address.Address, " "); }); I get the following errors: The best overloaded method match for 'System.Threading.Tasks.Parallel.ForEach(System.Collections.Generic.IEnumerable, System.Action)' has some invalid arguments Argument 1: cannot convert from 'EmailService.MailAddressCollection' to 'System.Collections.Generic.IEnumerable' What syntax do I need to use custom collections?

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