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  • Change class of parent div if radio input checked

    - by xxstevenxo
    I've been searching and searching google for answers to my question but have been unsuccessful so far. I'm hoping one of you guys could give me some assistance. I have 10 divs with the class name "dividend" holding a table with the classname/id of "container" then two smaller tables inside that. Within the container table at the bottom is a hidden radio button with the name "page1". I wrote an onClcick for the container table so the user can select the whole table instead of the radio button, but not I'm trying to change the style of the selected container so the users know they have selected it. I have tried a few different methods and I'm able to change the style to the new class by just writing document.getElementById('container').className = 'selected'; But because all 10 divs share the same name it will only change the style of the first element it finds. So I tried writing this loop to check if there are any selected radios in the document then to change the else name the style as the default. I'm sure its something stupid but I'm pretty stumped atm.. Any help would be appreciated. Thanks. selected = function () { var divs = document.getElementByTagName('DIV'), div, tbl, rad, stat, i; for (i = 0; i < divs.length; i++) { div = divs.id; if (div == 'dividend') { tbl = div.getElementById('container'); rad = tbl.getElementByTagName('INPUT'); if (rad.checked = true) { tbl.className = 'selected'; } } } };

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  • Hibernate CreateSQL Query Problem

    - by Shaded
    Hello All I'm trying to use hibernates built in createsql function but it seems that it doesn't like the following query. List =hibernateSession.createSQLQuery("SELECT number, location FROM table WHERE other_number IN (SELECT f.number FROM table2 AS f JOIN table3 AS g on f.number = g.number WHERE g.other_number = " + var + ") ORDER BY number").addEntity(Table.class).list(); I have a feeling it's from the nested select statement, but I'm not sure. The inner select is used elsewhere in the code and it returns results fine. This is my mapping for the first table: <hibernate-mapping> <class name="org.efs.openreports.objects.Table" table="table"> <id name="id" column="other_number" type="java.lang.Integer"> <generator class="native"/> </id> <property name="number" column="number" not-null="true" unique="true"/> <property name="location" column="location" not-null="true" unique="true"/> </class> </hibernate-mapping> And the .java public class Table implements Serializable { private Integer id;//panel_facility private Integer number; private String location; public Table() { } public void setId(Integer id) { this.id = id; } public Integer getId() { return id; } public void setNumber(Integer number) { this.number = number; } public Integer number() { return number; } public String location() { return location; } public void setLocation(String location) { this.location = location; } } Any suggestions? Edit (Added mapping)

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  • php | Multidimensional array sorting

    - by user889349
    I have an array and need to be sorted (based on id): Array ( [0] => Array ( [qty] => 1 [id] => 3 [name] => Name1 [sku] => Model 1 [options] => [price] => 100.00 ) [1] => Array ( [qty] => 2 [id] => 1 [name] => Name2 [sku] => Model 1 [options] => Color: <em>Black (+10$)</em>. Memory: <em>32GB (+99$)</em>. [price] => 209.00 ) ) Is it possible to sort my array to get output (id based)? Array ( [0] => Array ( [qty] => 2 [id] => 1 [name] => Name2 [sku] => Model 1 [options] => Color: <em>Black (+10$)</em>. Memory: <em>32GB (+99$)</em>. [price] => 209.00 ) [1] => Array ( [qty] => 1 [id] => 3 [name] => Name1 [sku] => Model 1 [options] => [price] => 100.00 ) ) Thanks!

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  • Is it the Correct way to create an XML like this:

    - by BDotA
    I want to create something like this at run-time: - <CWS> - <Case name="10-040-00022"> - <CaseDetailsSet> <CaseDetail title="Patient name" /> <CaseDetail title="Date of birth" /> </CaseDetailsSet> </Case> </CWS> so I wrote something like this ( I wish to use DOM in .NET .. not the XMLWriter,etc) XmlDocument doc = new XmlDocument(); XmlElement root = doc.CreateElement("CWS"); XmlElement singleCase = doc.CreateElement("Case"); root.AppendChild(singleCase); singleCase.SetAttribute("name", "10-040-00022"); XmlElement CaseDetailsSet = doc.CreateElement("CaseDetailsSet"); singleCase.AppendChild(CaseDetailsSet); XmlElement CaseDetail = doc.CreateElement("CaseDetail"); CaseDetailsSet.AppendChild(CaseDetail); CaseDetail.SetAttribute("title", "Patient Name"); please have a look at it and tell me if I am oing something wrong , regardign the code I worte to create that structure above. much appreciated.

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  • basic file input using C

    - by user1781966
    So im working on learning how to do file I/O, but the book I'm using is terrible at teaching how to receive input from a file. Below is is their example of how to receive input from a file, but it doesn't work. I have copied it word for word, and it should loop through a list of names until it reaches the end of the file( or so they say in the book), but it doesn't. In fact if I leave the while loop in there, it doesn't print anything. #include <stdio.h> #include <conio.h> int main() { char name[10]; FILE*pRead; pRead=fopen("test.txt", "r"); if (pRead==NULL) { printf("file cannot be opened"); }else printf("contents of test.txt"); fscanf(pRead,"%s",name); while(!feof(pRead)) { printf("%s\n",name); fscanf(pRead, "%s", name); } getch(); } Even online, every beginners tutorial I see does some variation of this, but I can't seem to get it to work even a little bit.

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  • How to determine if a target will be executed?

    - by Scott Langham
    Hi, I'm writing an msbuild file and have something like this: <ValidateDependsOn>$(ValidateDependsOn);ValidateA</ValidateDependsOn> <ValidateDependsOn>$(ValidateDependsOn);ValidateB</ValidateDependsOn> <Target Name="BuildA"> <!-- stuff --> </Target> <Target Name="BuildB"> <!-- stuff --> </Target> <Target Name="ValidateA"> <Error /> <!-- check properties and machine environment are suitable to run BuildA --> </Target> <Target Name="ValidateB"> <Error /> <!-- check properties and machine environment are suitable to run BuildB --> </Target> Builds can take a while. Originally we had the Build steps depending on the Validate steps, but sometimes a validate step wouldn't run until the middle of the build and you would have wasted time getting there. So, we moved the validate steps to the start by using the ValidateDependsOn pattern to insert the targets to run up front. The problem now though is that sometimes during a build BuildB may not actually run, and this means I don't need and in fact, don't want ValidateB to run. Is there any way I can selectively update ValidateDependsOn by conditionally knowing which targets will actually be run? I'm looking for something equivalent to: <ValidateDependsOn Condition="TargetWillRun(BuildB)">$(ValidateDependsOn);ValidateB</ValidateDependsOn>

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  • Obtain File size with os.path.getsize() in Python 2.7.5

    - by Ruxuan Ouyang
    I am new to python. I am trying to use os.path.getsize() to obtain the file size. However, if the file name is not in Englist, but in Chinese, Gemany, or French, etc, Python cannot recognize it and do not return the size of the file. Could you please help me with it? How can I let Python recognize the file's name and return the size of these kind of files? For example: The file's name is:?????????? ????????????? ? ????????????? ???????? ?? 2030?.doc path="C:\xxxx\xxx\xxxx\?????????? ????????????? ? ????????????? ???????? ?? 2030?.doc" I'd like to use" os.path.getsize(path) But it does not recognize the file name. Could you please kindly tell me what should I do? Thank you very much!

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  • Make form redirect users after posting

    - by Liso22
    I need to change a form so that instead of reloading the page after submitting it, it redirects the user to another page, this is the form: <form class="questionform" name="questionform-0" id="questionform-0"> <textarea class="question-box" cols="12" rows="5" id="question-box-' . $questionformid . '" name="title" type="text" maxlength="200" size="28"></textarea> <input type="text" class="ubicacion" value="" name="question"> <input type="button" name="ask" value="Publicar" onclick="askquestion('questionform-0'); window.location.reload(true);"> I want to remove the window.location.reload and change it for a redirect that sends users to the page their comment will appear. Which is: www.chusmix.com/s?= (the content of the second field) The problem is that the content of the second field is part of the url I want to redirect, it's not simply always the same URL. So I have no idea how to do it. How do I do it? Anyway thanks for any info or whatever that points me on the right direction. Thanks

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  • jquery select one class from many

    - by simnom
    Hi, I'm trying to achieve the following functionality. Within a form I have multiple fields with the class name .inputField if one of these fields is selected then the div associated with that element should be shown on focus and hidden on blur. However, when I implement the code below on selecting the second element the class is applied to both. Not sure where I'm going wrong?!?!? html markup: <form class="friendlyForm" name="friendlyForm" id="friendlyForm"> <ul> <li> <label for="testField">Test field</label> <input name="testField" value="here" class="inputField" id="testField" /> <div class="helper" style="display: none;">helper text here</div> </li> <li> <label for="testField">Test field2</label> <input name="testField2" value="here" class="inputField" id="testField2" /> <div class="helper" style="display: none;">helper text here</div> </li> </ul> </form> jQuery markup: $('.friendlyForm').find('.inputField').each(function(i) { $(this).blur(); $(this).focus(function() { //Add the focus class and fadeIn the helper div $(this).parent().addClass('focus'); $(this).parent().parent().find('.helper').fadeIn(); }); $(this).blur(function () { //Remove the focus class and fadeOut helper div $(this).parent().removeClass('focus'); $(this).parent().parent().find('.helper').fadeOut(); }); }); Any pointers here would be greatly appreciated. Thanks

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  • Setting up App Engine to receive email addresses with ids in the address

    - by Mark M
    I am writing an App Engine app that is supposed to receive emails in this form: [email protected] (someID is an alphanumeric ID that I generate). I have this in my web.xml thinking it would catch emails that start with 'addcontact.': <servlet> <servlet-name>addNewContactServlet</servlet-name> <servlet-class>com.mycompany.server.AddNewContactServlet</servlet- class> </servlet> <servlet-mapping> <servlet-name>addNewContactServlet</servlet-name> <url-pattern>/_ah/mail/addcontact.*</url-pattern> </servlet-mapping> However, both on my dev machine and on google's servers email is not received. On the dev machine I get this message (I get a similar error in the deployed log) Message send failure HTTP ERROR 404 Problem accessing /_ah/mail/ [email protected]. Reason: NOT_FOUND I can receive email at fully specified addresses or when I use /_ah/mail/* The google documentation made me believe it was possible to include partial email addresses in web.xml. Am I not using the wildcard correctly? Does the period have something to do with it? Can this be done somehow?

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  • Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in

    - by user1493540
    <html> <title>Title</title> <body> <link type="text/css" rel="stylesheet" href="css/bootstrap.css"/> </body> <center> <? mysql_connect ("localhost", "root","") or die (mysql_error()); mysql_select_db ("dbname"); $term = $_POST['term']; $sql = mysql_query("select * from items where name like '%$term%'"); while ($row = mysql_fetch_array($sql)){ echo '<table class="table - striped"> <theader> <tr> <th>ID</th> <th></br> Name</th></tr>'; echo ' <tbody><td>'.$row['id']; echo'</td>'; echo '<td>'; echo '</theader>' .$row['name']; echo '</td>'; echo ''; } ?> </center> <script src="js/bootsrap.js"> </script> </html> I'm, getting this error: Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in /home/runedev1/public_html/itemdb/search.php on line 19 When I run the code on localhost using Xampp, it works fine, when I upload it to the web-host, the error appears. Yes, I am changing the database name, user and password when putting it on the webhost.

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  • Prevent empty form input array from being posted?

    - by user355295
    Sorry if this has been answered somewhere; I'm not quite sure how to phrase the problem to even look for help. Anyway, I have a form with three text input boxes, where the user will input three song titles. I have simple PHP set up to treat those input boxes as an array (because I may want, say, 100 song titles in the future) and write the song titles to another document. <form method="post"> <input type="text" name="songs[]" value="" /> <input type="text" name="songs[]" value="" /> <input type="text" name="songs[]" value="" /> <button type="submit" name="submit" value="submit">Submit</button> </form> <?php if (isset($_POST['submit'])) { $open = fopen("test.html", "w"); if(empty($_POST['songs'])) { } else { $songs = $_POST['songs']; foreach($songs as $song) { fwrite($open, $song."<br />"); }; }; }; ?> This correctly writes the song titles to an external file. However, even when the input boxes are empty, the external file will still be written to (just with the <br />'s). I'd assumed that the if statement would ensure nothing would happen if the boxes were blank, but that's obviously not the case. I guess the array's not really empty like I thought it was, but I'm not really sure what implications that comes with. Any idea what I'm doing wrong? (And again, I am clueless when it comes to PHP, so forgive me if this has been answered a million times before, if I described it horribly, etc.)

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  • Saving associated domain classes in Grails

    - by Cesar
    I'm struggling to get association right on Grails. Let's say I have two domain classes: class Engine { String name int numberOfCylinders = 4 static constraints = { name(blank:false, nullable:false) numberOfCylinders(range:4..8) } } class Car { int year String brand Engine engine = new Engine(name:"Default Engine") static constraints = { engine(nullable:false) brand(blank:false, nullable:false) year(nullable:false) } } The idea is that users can create cars without creating an engine first, and those cars get a default engine. In the CarController I have: def save = { def car = new Car(params) if(!car.hasErrors() && car.save()){ flash.message = "Car saved" redirect(action:index) }else{ render(view:'create', model:[car:car]) } } When trying to save, I get a null value exception on the Car.engine field, so obviously the default engine is not created and saved. I tried to manually create the engine: def save = { def car = new Car(params) car.engine = new Engine(name: "Default Engine") if(!car.hasErrors() && car.save()){ flash.message = "Car saved" redirect(action:index) }else{ render(view:'create', model:[car:car]) } } Didn't work either. Is Grails not able to save associated classes? How could I implement such feature?

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  • Python Beautiful Soup .content Property

    - by Robert Birch
    What does BeautifulSoup's .content do? I am working through crummy.com's tutorial and I don't really understand what .content does. I have looked at the forums and I have not seen any answers. Looking at the code below.... from BeautifulSoup import BeautifulSoup import re doc = ['<html><head><title>Page title</title></head>', '<body><p id="firstpara" align="center">This is paragraph <b>one</b>.', '<p id="secondpara" align="blah">This is paragraph <b>two</b>.', '</html>'] soup = BeautifulSoup(''.join(doc)) print soup.contents[0].contents[0].contents[0].contents[0].name I would expect the last line of the code to print out 'body' instead of... File "pe_ratio.py", line 29, in <module> print soup.contents[0].contents[0].contents[0].contents[0].name File "C:\Python27\lib\BeautifulSoup.py", line 473, in __getattr__ raise AttributeError, "'%s' object has no attribute '%s'" % (self.__class__.__name__, attr) AttributeError: 'NavigableString' object has no attribute 'name' Is .content only concerned with html, head and title? If, so why is that? Thanks for the help in advance.

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  • Trouble deciding return type of a method that returns a SortedSet

    - by devoured elysium
    I am supposed to make a class that should be a container for an interval of values (like in mathematics). I have already decided that I'll use internally a SortedSet. One of the the things I'm supposed to implement is a method that "gets an ordered set with all the elements in the interval". class Interval { private SortedSet sortedSet = new something(); ... <<method that should return an ordered set of values>> } My question resides in what should be both the method's return type and name. Several hypothesis arise: SortedSet getSortedElements(); I am internally using a SortedSet, so I should return that type. I should state that intent in the method's name. SortedSet getElements(); I am internally using a SortedSet, but there's no point in stating that in the method name(I don't see a big point in this one). Set getElements(); I should try to always return the most basic type, thus I am returning a Set. By the contract and definition of the method, people already know all the elements are in order. Set getSortedElements(); For the method return type, the same as above. About the method name, you are stating clearly what this method is going to return: a set of elements that are sorted. I'm inclined to use 4. , but the others also seem alright. Is there a clear winner? Why?

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  • regular expression repeating subexpression

    - by Michael Z
    I have the following text <pattern name="pattern1"/> <success>success case 1</success> <failed> failure 1</failed> <failed> failure 2</failed> <unknown> unknown </unknown> <pattern name="pattern2"/> <success>success case 2</success> <otherTag>There are many other tags.</otherTag> <failed> failure 3</failed> And the regular expression <failed>[\w|\W]*?</failed> matches all the lines contains failed tag. What do I need to to if I want to include the lines contains pattern tag as well? Basically, I want the following output: <pattern name="pattern1"/> <failed> failure 1</failed> <failed> failure 2</failed> <pattern name="pattern2"/> <failed> failure 3</failed> I am doing this in javascript, I do not mind of doing some intermediate steps.

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  • PHP: exif_imagetype() not working?

    - by Karem
    I have this extension checker: $upload_name = "file"; $max_file_size_in_bytes = 8388608; $extension_whitelist = array("jpg", "gif", "png", "jpeg"); /* checking extensions */ $path_info = pathinfo($_FILES[$upload_name]['name']); $file_extension = $path_info["extension"]; $is_valid_extension = false; foreach ($extension_whitelist as $extension) { if (strcasecmp($file_extension, $extension) == 0) { $is_valid_extension = true; break; } } if (!$is_valid_extension) { echo "{"; echo "error: 'ext not allowed!'\n"; echo "}"; exit(0); } And then i added this: if (exif_imagetype($_FILES[$upload_name]['name']) != IMAGETYPE_GIF OR exif_imagetype($_FILES[$upload_name]['name']) != IMAGETYPE_JPEG OR exif_imagetype($_FILES[$upload_name]['name']) != IMAGETYPE_PNG) { echo "{"; echo "error: 'This is no photo..'\n"; echo "}"; exit(0); } As soon when I added this to my imageupload function, the function stops working. I dont get any errors, not even the one i made myself "this is no photo", what could be wrong? Just checked with my host. They support the function exif_imagetype()

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  • cannot enter text in query popup input field

    - by raja
    i am unable to enter text in jquery popup text field...... i am using following plugins my html code </head> <body onmousedown="return false;"> <div id="container"></div> <div id="divMenu"></div> </body> </html> i am appending popup tags as function setupCalibration(){ $('#container').append(' <div data-role="popup" id="calibratePopup" data-transition="flip" data-theme="e" data-overlay-theme="a" class="ui-content" style=" width:300px;height: 200px; z-index:1; display:none;"><label for="name">Text Input:</label><input type="text" name="name" id="name" value="" /></div>'); } and this is how i am invoking popup on click of divmenu button document.getElementById('divMenu').addEventListener('click', function() { $( '#calibratePopup' ).popup({display:block}); $( '#calibratePopup' ).show(); $( '#calibratePopup' ).popup( "open"); }, false); i am able to show popup,but input field is not responding

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  • Why is my php script freezing?

    - by William
    What is causing my php code to freeze? I know it's cause of the while loop, but I have $max_threads--; at the end so it shouldn't do that. <html> <head> <?php $db = mysql_connect("host","name","pass") or die("Can't connect to host"); mysql_select_db("dbname",$db) or die("Can't connect to DB"); $sql_result = mysql_query("SELECT MAX(Thread) FROM test_posts", $db); $rs = mysql_fetch_row($sql_result); $max_threads = $rs[0]; $board = $_GET['board']; ?> </head> <body> <?php While($max_threads >= 0) { $sql_result = mysql_query("SELECT MIN(ID) FROM test_posts WHERE Thread=".$max_threads."", $db); $rs = mysql_fetch_row($sql_result); $sql_result = mysql_query("SELECT post FROM test_posts WHERE ID=".$rs[0]."", $db); $post = mysql_fetch_row($sql_result); $sql_result = mysql_query("SELECT name FROM test_posts WHERE ID=".$rs[0]."", $db); $name = mysql_fetch_row($sql_result); $sql_result = mysql_query("SELECT trip FROM test_posts WHERE ID=".$rs[0]."", $db); $trip = mysql_fetch_row($sql_result); if(!empty($post)) echo'<div class="postbox"><h4>'.$name[0].'['.$trip[0].']</h4><hr />' . $post[0] . '<br /><hr />[<a href="http://prime.programming-designs.com/test_forum/viewthread.php?thread='.$max_threads.'">Reply</a>]</div>'; $max_threads--; } ?> </body> </html>

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  • how to delete a line from file using awk filtered by some string

    - by embedded
    I have a file delimited by space. I need to write an awk command that receives a host name argument and it should replace the host name if it already defined in the file. It must be a full match not partially - if the file contains this host name: localhost searching for "ho" will fail and it will be added to the end of the file. another option is a delete: again awk receives host name argument and it should remove it from the file if exists. This is what I have so far: (It needs some enhancements) if [ "$DELETE_FLAG" == "" ]; then # In this case the entry should be added or updated # if clause deals with updating an existing entry # END clause deals with adding a new entry awk -F"[ ]" "BEGIN { found = 0;} \ { \ if ($2 == $HOST_NAME) { \ print \"$IP_ADDRESS $HOST_NAME\"; \ found = 1; \ } else { \ print \$0; \ } \ } \ END { \ if (found == 0) { \ print \"$IP_ADDRESS $HOST_NAME\"; } \ } " \ /etc/hosts > /etc/temp_hosts else # Delete an existing entry awk -F'[ ]' '{if($2 != $HOST_NAME) { print $0} }' /etc/hosts > /etc/temp_hosts fi Thanks

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  • Selenium problem locating by DOM

    - by bartonlee
    Hi, I'm trying to use the DOM to locate a form element in Selenium but I can't get it to work. Even if I use the example in the Selenium documentation it still fails, for example with this html... <html> <body> <form id="loginForm"> <input name="username" type="text" /> <input name="password" type="password" /> <input name="continue" type="submit" value="Login" /> <input name="continue" type="button" value="Clear" /> </form> </body> <html> and this command in the Selenium IDE... verifyElementPresent with target... dom=document.forms['loginForm'] I get [error] false in the log. The 'getElementById' example in the documentation does work, but none of the others. Can someone explain what I'm doing wrong here? Thanks.

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  • Retrieve nested list from XDocument with LINQ

    - by twreid
    Ok I want my link query to return a list of users. Below is the XML <section type="Users"> <User type="WorkerProcessUser"> <default property="UserName" value="Main"/> <default property="Password" value=""/> <default property="Description" value=""/> <default property="Group" value=""/> </User> <User type="AnonymousUser"> <default property="UserName" value="Second"/> <default property="Password" value=""/> <default property="Description" value=""/> <default property="Group" value=""/> </User> </section> And my current LINQ Query that doesn't work. doc is an XDocument var users = (from iis in doc.Descendants("section") where iis.Attribute("type").Value == "Users" from user in iis.Elements("User") from prop in user.Descendants("default") select new { Type = user.Attribute("type").Value, UserName = prop.Attribute("UserName").Value }); This does not work can anyone tell me what I need to fix? Here is my second attempt after fixing for the wrong property name. However this one does not seem to enumerate the UserName value for me when I try to use it or at least when I try to write it to the console. Also this returns 8 total results I should only have 2 results as I only have 2 users. (from iis in doc.Descendants("section") where iis.Attribute("type").Value == "Users" from user in iis.Elements("User") from prop in user.Descendants("default") select new { Type = user.Attribute("type").Value, UserName = (from name in prop.Attributes("property") where name.Value == "UserName" select name.NextAttribute.Value).ToString() });

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  • Need Help for Listview WPF events for finding index of rows and columns

    - by Ravi
    I have a listview in WPF and i displayed data in line by line manner,i want to just find the indexs of the rows and columns,i am new to WPF,plz give me some idea about this. <Grid Margin="3"> <Grid.RowDefinitions> <RowDefinition></RowDefinition> <RowDefinition></RowDefinition> <RowDefinition></RowDefinition> <RowDefinition></RowDefinition> <RowDefinition></RowDefinition> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="600"></ColumnDefinition> <ColumnDefinition></ColumnDefinition> </Grid.ColumnDefinitions> <StackPanel Orientation="Horizontal" Grid.RowSpan="1"> <Label Name="lblID1" FontWeight="Bold" Grid.Row="0">ID:</Label> <Label Name="lblID" Grid.Row="0"> <TextBlock FontFamily="verdana" FontSize="12" FontWeight="Bold" Grid.Column="0" Padding="0" Text="{Binding Path=ID}"></TextBlock> </Label> <Label Name="lblDescrip1" FontWeight="Bold" Grid.Row="1">Description:</Label> <Label Name="lblDescrip"> <TextBlock FontFamily="verdana" FontSize="12" Grid.Column="1" Text="{Binding Path=DESCRIP}"></TextBlock> </Label> </StackPanel> Fee: Type: Special:

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  • MySQL Join Question

    - by rbaker86
    Hi i'm struggling to write a particular MySQL Join Query. I have a table containing product data, each product can belong to multiple categories. This m:m relationship is satisfied using a link table. For this particular query I wish to retrieve all products belonging to a given category, but with each product record, I also want to return the other categories that product belongs to. Ideally I would like to achieve this using an Inner Join on the categories table, rather than performing an additional query for each product record, which would be quite inefficient. My simplifed schema is designed roughly as follows: products table: product_id, name, title, description, is_active, date_added, publish_date, etc.... categories table: category_id, name, title, description, etc... product_category table: product_id, category_id I have written the following query, which allows me to retrieve all the products belonging to the specified category_id. However, i'm really struggling to work out how to retrieve the other categories a product belongs to. SELECT p.product_id, p.name, p.title, p.description FROM prod_products AS p LEFT JOIN prod_product_category AS pc ON pc.product_id = p.product_id WHERE pc.category_id = $category_id AND UNIX_TIMESTAMP(p.publish_date) < UNIX_TIMESTAMP() AND p.is_active = 1 ORDER BY p.name ASC I'd be happy just retrieving the category id's releated to each returned product row, as I will have all category data stored in an object, and my application code can take care of the rest. Many thanks, Richard

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  • R Random Data Sets within loops

    - by jugossery
    Here is what I want to do: I have a time series data frame with let us say 100 time-series of length 600 - each in one column of the data frame. I want to pick up 4 of the time-series randomly and then assign them random weights that sum up to one (ie 0.1, 0.5, 0.3, 0.1). Using those I want to compute the mean of the sum of the 4 weighted time series variables (e.g. convex combination). I want to do this let us say 100k times and store each result in the form ts1.name, ts2.name, ts3.name, ts4.name, weight1, weight2, weight3, weight4, mean so that I get a 9*100k df. I tried some things already but R is very bad with loops and I know vector oriented solutions are better because of R design. Thanks Here is what I did and I know it is horrible The df is in the form v1,v2,v2.....v100 1,5,6,.......9 2,4,6,.......10 3,5,8,.......6 2,2,8,.......2 etc e=NULL for (x in 1:100000) { s=sample(1:100,4)#pick 4 variables randomly a=sample(seq(0,1,0.01),1) b=sample(seq(0,1-a,0.01),1) c=sample(seq(0,(1-a-b),0.01),1) d=1-a-b-c e=c(a,b,c,d)#4 random weights average=mean(timeseries.df[,s]%*%t(e)) e=rbind(e,s,average)#in the end i get the 9*100k df } The procedure runs way to slow. EDIT: Thanks for the help i had,i am not used to think R and i am not very used to translate every problem into a matrix algebra equation which is what you need in R. Then the problem becomes a little bit complex if i want to calculate the standard deviation. i need the covariance matrix and i am not sure i can if/how i can pick random elements for each sample from the original timeseries.df covariance matrix then compute the sample variance (t(sampleweights)%*%sample_cov.mat%*%sampleweights) to get in the end the ts.weighted_standard_dev matrix Last question what is the best way to proceed if i want to bootstrap the original df x times and then apply the same computations to test the robustness of my datas thanks

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