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• Speed Problem with Wireless Connectivity on Cisco 877w

  - by Carl Crawley

  Having a bit of a weird one with my local LAN setup. I recently installed a Cisco 877W router on my DSL2+ connection and all is working really well.. Upgraded the IOS to 12.4 and my wired clients are streaming connectivity superfast at 1.3mb/s. However, there seems to be an issue with my wireless clients - I can't seem to stream any data across the local wireless connection (LAN) and using the Internet, whilst responsive enough isn't really comparable with the wired connection speed. For example, all devices are connected to an 8 Port Gb switch on FE0 from the Router with a NAS disk and on my wired clients, I can transfer/stream etc absolutely fine - however, transferring a local 700Mb file on my local LAN estimates 7-8 hours to transfer :( The Wireless config is as follows : interface Dot11Radio0 description WIRELESS INTERFACE no ip address ! encryption mode ciphers tkip ! ssid [MySSID] ! speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 channel 2462 station-role root rts threshold 2312 world-mode dot11d country GB indoor bridge-group 1 bridge-group 1 subscriber-loop-control bridge-group 1 spanning-disabled bridge-group 1 block-unknown-source no bridge-group 1 source-learning no bridge-group 1 unicast-flooding All devices are connected to the Gb Switch which is connected to FE0 with the following: Hardware is Fast Ethernet, address is 0021.a03e.6519 (bia 0021.a03e.6519) Description: Uplink to Switch MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 100Mb/s ARP type: ARPA, ARP Timeout 04:00:00 Last input never, output never, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 14000 bits/sec, 19 packets/sec 5 minute output rate 167000 bits/sec, 23 packets/sec 177365 packets input, 52089562 bytes, 0 no buffer Received 919 broadcasts, 0 runts, 0 giants, 0 throttles 260 input errors, 260 CRC, 0 frame, 0 overrun, 0 ignored 0 input packets with dribble condition detected 156673 packets output, 106218222 bytes, 0 underruns 0 output errors, 0 collisions, 2 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier 0 output buffer failures, 0 output buffers swapped out Not sure why I'm having problems on the wireless and I've reached the end of my Cisco knowledge... Thanks for any pointers! Carl

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• Window Media Player issues two requests for the audio on web page

  - by Ron Harlev

  I'm using Windows Media Player in a web page. I have version 11 installed so that is the version I'm testing with right now. The player is embedded on the page with this HTML: <OBJECT id='MS_mediaPlayer' width="400" height="45" classid='CLSID:6BF52A52-394A-11D3-B153-00C04F79FAA6' codebase='http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701' standby='Loading Microsoft Windows Media Player components...' type='application/x-oleobject'> <param name='autoStart' value="false"> <param name='uiMode' value="invisible"> <param name='loop' value="false"> </OBJECT> I'm calling in JavaScript: MS_mediaPlayer.URL = "SomeAudioFile.mp3" MS_mediaPlayer.controls.play(); When I look at Fiddler I can see that the player actually downloads "SomeAudioFile.mp3" twice. Is there some setting I have wrong? I was trying to set the "autoPlay" to true and avoid calling "play()". Got the same result - two downloads. UPDATE: The first request's user-agent is "Windows-Media-Player/11.0.5721.5268". The second has "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB6; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)". Looks like the browser is running the same request the second time. No Idea why Any ideas? UPDATE (4/1/10): Still no solution. I debugged the JS thoroughly and there is only one call to MediaPlayer.URL='.....' to set the audio file. Nothing else triggers the media player to load the file and there is no other place referencing the audio file on the page. One other interesting fact is that this doesn't happen (the double loading of the audio) when I run the browser locally on my development web server. But other remote requests to the same web server generate the double audio loading. I believe I eliminated any correlation with specific IE version or media player version. This happens with IE6-8 and WM9-12

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• Mysql query help - Alter this mysql query to get these results?

  - by sandeepan-nath

  Please execute the following queries first to set up so that you can help me:- CREATE TABLE IF NOT EXISTS `Tutor_Details` ( `id_tutor` int(10) NOT NULL auto_increment, `firstname` varchar(100) NOT NULL default '', `surname` varchar(155) NOT NULL default '', PRIMARY KEY (`id_tutor`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=41 ; INSERT INTO `Tutor_Details` (`id_tutor`,`firstname`, `surname`) VALUES (1, 'Sandeepan', 'Nath'), (2, 'Bob', 'Cratchit'); CREATE TABLE IF NOT EXISTS `Classes` ( `id_class` int(10) unsigned NOT NULL auto_increment, `id_tutor` int(10) unsigned NOT NULL default '0', `class_name` varchar(255) default NULL, PRIMARY KEY (`id_class`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=229 ; INSERT INTO `Classes` (`id_class`,`class_name`, `id_tutor`) VALUES (1, 'My Class', 1), (2, 'Sandeepan Class', 2); CREATE TABLE IF NOT EXISTS `Tags` ( `id_tag` int(10) unsigned NOT NULL auto_increment, `tag` varchar(255) default NULL, PRIMARY KEY (`id_tag`), UNIQUE KEY `tag` (`tag`), KEY `id_tag` (`id_tag`), KEY `tag_2` (`tag`), KEY `tag_3` (`tag`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=18 ; INSERT INTO `Tags` (`id_tag`, `tag`) VALUES (1, 'Bob'), (6, 'Class'), (2, 'Cratchit'), (4, 'Nath'), (3, 'Sandeepan'), (5, 'My'); CREATE TABLE IF NOT EXISTS `Tutors_Tag_Relations` ( `id_tag` int(10) unsigned NOT NULL default '0', `id_tutor` int(10) default NULL, KEY `Tutors_Tag_Relations` (`id_tag`), KEY `id_tutor` (`id_tutor`), KEY `id_tag` (`id_tag`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; INSERT INTO `Tutors_Tag_Relations` (`id_tag`, `id_tutor`) VALUES (3, 1), (4, 1), (1, 2), (2, 2); CREATE TABLE IF NOT EXISTS `Class_Tag_Relations` ( `id_tag` int(10) unsigned NOT NULL default '0', `id_class` int(10) default NULL, `id_tutor` int(10) NOT NULL, KEY `Class_Tag_Relations` (`id_tag`), KEY `id_class` (`id_class`), KEY `id_tag` (`id_tag`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; INSERT INTO `Class_Tag_Relations` (`id_tag`, `id_class`, `id_tutor`) VALUES (5, 1, 1), (6, 1, 1), (3, 2, 2), (6, 2, 2); In the present system data which I have given , tutor named "Sandeepan Nath" has has created class named "My Class" and tutor named "Bob Cratchit" has created class named "Sandeepan Class". Requirement - To execute a single query with limit on the results to show search results as per AND logic on the search keywords like this:- If "Sandeepan Class" is searched , Tutor Sandeepan Nath's record from Tutor Details table is returned(because "Sandeepan" is the firstname of Sandeepan Nath and Class is present in class name of Sandeepan's class) If "Class" is searched Both the tutors from the Tutor_details table are fetched because Class is present in the name of the class created by both the tutors. Following is what I have so far achieved (PHP Mysql):- <?php $searchTerm1 = "Sandeepan"; $searchTerm2 = "Class"; mysql_select_db("test"); $sql = "SELECT td.* FROM Tutor_Details AS td LEFT JOIN Tutors_Tag_Relations AS ttagrels ON td.id_tutor = ttagrels.id_tutor LEFT JOIN Classes AS wc ON td.id_tutor = wc.id_tutor LEFT JOIN Class_Tag_Relations AS wtagrels ON td.id_tutor = wtagrels.id_tutor LEFT JOIN Tags as t1 on ((t1.id_tag = ttagrels.id_tag) OR (t1.id_tag = wtagrels.id_tag)) LEFT JOIN Tags as t2 on ((t2.id_tag = ttagrels.id_tag) OR (t2.id_tag = wtagrels.id_tag)) where t1.tag LIKE '%".$searchTerm1."%' AND t2.tag LIKE '%".$searchTerm2."%' GROUP BY td.id_tutor LIMIT 10 "; $result = mysql_query($sql); echo $sql; if($result) { while($rec = mysql_fetch_object($result)) $recs[] = $rec; //$rec = mysql_fetch_object($result); echo "<br><br>"; if(is_array($recs)) { foreach($recs as $each) { print_r($each); echo "<br>"; } } } ?> But the results are :- If "Sandeepan Nath" is searched, it does not return any tutor (instead of only Sandeepan's row) If "Sandeepan Class" is searched, it returns Sandeepan's row (instead of Both tutors ) If "Bob Class" is searched, it correctly returns Bob's row If "Bob Cratchit" is searched, it does not return any tutor (instead of only

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• Jquery retrieve values of Dynamically created elements

  - by Amitd

  Hi, I have a html page with a form. The form has Div which gets populated dynamically with Input elements like text box,radio,checkbox etc. Now I want to retrieve the values of these dynamically created elements in the Html page,so that i can submit it to a page. //HTML PAGE <script type="text/javascript"> $(function() { populateQuestions(); }); $("#submit_btn").click(function() { // validate and process form here //HOW TO ??retrieve values??? var optionSelected = $("input#OptionSelected_1").val();// doesn't work? // alert(optionSelected); postAnswer(qid,values);//submit values showNextQuestion() ;// populate Div Questions again new values }); </script> <form action="" name="frmQuestion"> <div id="Questions" style="color: #FF0000"> </div> //Question DIV generation script example radio buttons //questionText text of question //option for question questionOptions // **sample call** var question = createQuestionElement("1","MCQ", "WHAT IS ABCD??", "Opt1$Opt2$Opt3"); question.appendTo($('#Questions')); function createQuestionElement(id, type, questionText, questionOptions) { var questionDiv = $('<div>').attr('id', 'Question'); var divTitle = $('<div>').attr('id', 'Question Title').html(questionText); divTitle.appendTo(questionDiv); var divOptions = $('<div>').attr('id', 'Question Options'); createOptions(id, "radio", questionOptions, divOptions); divOptions.appendTo(questionDiv); return questionDiv; } function createOptions(id, type, options, div) { var optionArray = options.split("$"); // Loop over each value in the array. $.each( optionArray, function(intIndex, objValue) { if (intIndex == 0) { div.append($("<input type='" + type + "' name='OptionSelected_" + id + "' checked='checked' value='" + objValue + "'>")); } else { div.append($("<input type='" + type + "' name='OptionSelected_" + id + "' value='" + objValue + "'>")); } div.append(objValue); div.append("<br/>"); }

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• RSS feed doesnt display items. Only title

  - by Quaze

  So i just made my first RSS feed, or so i tought, in combination with CI. Now my view DOES display the top of my rss page (Title and Description), But all items are omitted. When i rightclick-view source it DOES contain all the items within the item tags. Can anyone help me? View (rss.php): <?php echo '<?xml version="1.0" encoding="'.$encoding.'"?>'."\n"; ?> <rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:admin="http://webns.net/mvcb/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:content="http://purl.org/rss/1.0/modules/content/"> <channel> <title><?php echo $feed_name; ?></title> <link><?php echo $feed_url; ?></link> <description><?php echo $page_description; ?></description> <dc:language><?php echo $page_language; ?></dc:language> <dc:creator><?php echo $creator_email; ?></dc:creator> <dc:rights>Copyright <?php echo gmdate("%Y", time()); ?></dc:rights> <dc:date><?php echo gmdate("%Y-%m-&#xdT;%H:%i:%s%Q", time()); ?></dc:date> <admin:generatorAgent rdf:resource="http://www.codeigniter.com/" /> <?php foreach($items as $entry): ?> <?php $entry_url = base_url().$this->lang->lang().$localized_news[$this->lang->lang()].'/'.print_date(strtotime($entry->published), "{year}/{month2}").'/'.$entry->slug; ?> <item> <title><?php echo xml_convert($entry->title); ?></title> <link><?php echo $entry_url; ?></link> <guid><?php echo $entry_url; ?></guid> <description><?php echo $entry->summary; ?></description> <pubDate><?php echo date('r', $entry->published); ?></pubDate> </item> <?php endforeach; ?> </channel> This is what the output looks like: screenshot and in the source, every item needed to be displayed is there. with <item> <link> <description> <guid> and <pubdate> tags. Ive been looking for the cause for about 1.5 hours now. and i cant find anything. Can someone tell me if i did anything wrong? Appreciate the help! ~Menno

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• How should Application.Run() be called for the main presenter of a MVP WinForms app?

  - by Mr Roys

  I'm learning to apply MVP to a simple WinForms app (only one form) in C# and encountered an issue while creating the main presenter in static void Main(). Is it a good idea to expose a View from the Presenter in order to supply it as a parameter to Application.Run()? Currently, I've implemented an approach which allows me to not expose the View as a property of Presenter: static void Main() { IView view = new View(); Model model = new Model(); Presenter presenter = new Presenter(view, model); presenter.Start(); Application.Run(); } The Start and Stop methods in Presenter: public void Start() { view.Start(); } public void Stop() { view.Stop(); } The Start and Stop methods in View (a Windows Form): public void Start() { this.Show(); } public void Stop() { // only way to close a message loop called // via Application.Run(); without a Form parameter Application.Exit(); } The Application.Exit() call seems like an inelegant way to close the Form (and the application). The other alternative would be to expose the View as a public property of the Presenter in order to call Application.Run() with a Form parameter. static void Main() { IView view = new View(); Model model = new Model(); Presenter presenter = new Presenter(view, model); Application.Run(presenter.View); } The Start and Stop methods in Presenter remain the same. An additional property is added to return the View as a Form: public void Start() { view.Start(); } public void Stop() { view.Stop(); } // New property to return view as a Form for Application.Run(Form form); public System.Windows.Form View { get { return view as Form(); } } The Start and Stop methods in View (a Windows Form) would then be written as below: public void Start() { this.Show(); } public void Stop() { this.Close(); } Could anyone suggest which is the better approach and why? Or there even better ways to resolve this issue?

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• Possible uncommitted transactions causing "System.Data.SqlClient.SqlException: Timeout expired" erro

  - by Michael

  My application requires a user to log in and allows them to edit a list of things. However, it seems that if the same user always logs in and out and edits the list, this user will run into a "System.Data.SqlClient.SqlException: Timeout expired." error. I've read comments about increasing the timeout period but I've also read a comment about it possibly caused by uncommitted transactions. And I do have one going in the application. I'll provide the code I'm working with and there is an IF statement in there that I was a little iffy about but it seemed like a reasonable thing to do. I'll just go over what's going on here, there is a list of objects to update or add into the database. New objects created in the application are given an ID of 0 while existing objects have their own ID's generated from the DB. If the user chooses to delete some objects, their IDs are stored in a separate list of Integers. Once the user is ready to save their changes, the two lists are passed into this method. By use of the IF statement, objects with ID of 0 are added (using the Add stored procedure) and those objects with non-zero IDs are updated (using the Update stored procedure). After all this, a FOR loop goes through all the integers in the "removal" list and uses the Delete stored procedure to remove them. A transaction is used for all this. Public Shared Sub UpdateSomethings(ByVal SomethingList As List(Of Something), ByVal RemovalList As List(Of Integer)) Using DBConnection As New SqlConnection(conn) DBConnection.Open() Dim MyTransaction As SqlTransaction MyTransaction = DBConnection.BeginTransaction() Try For Each SomethingItem As Something In SomethingList Using MyCommand As New SqlCommand() MyCommand.Connection = DBConnection If SomethingItem.ID > 0 Then MyCommand.CommandText = "UpdateSomething" Else MyCommand.CommandText = "AddSomething" End If MyCommand.Transaction = MyTransaction MyCommand.CommandType = CommandType.StoredProcedure With MyCommand.Parameters If MyCommand.CommandText = "UpdateSomething" Then .Add("@id", SqlDbType.Int).Value = SomethingItem.ID End If .Add("@stuff", SqlDbType.Varchar).Value = SomethingItem.Stuff End With MyCommand.ExecuteNonQuery() End Using Next For Each ID As Integer In RemovalList Using MyCommand As New SqlCommand("DeleteSomething", DBConnection) MyCommand.Transaction = MyTransaction MyCommand.CommandType = CommandType.StoredProcedure With MyCommand.Parameters .Add("@id", SqlDbType.Int).Value = ID End With MyCommand.ExecuteNonQuery() End Using Next MyTransaction.Commit() Catch ex As Exception MyTransaction.Rollback() 'Exception handling goes here End Try End Using End Sub There are three stored procedures used here as well as some looping so I can see how something can be holding everything up if the list is large enough. Other users can log in to the system at the same time just fine though. I'm using Visual Studio 2008 to debug and am using SQL Server 2000 for the DB.

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• How can i count the number of unique instances of IP address in the following string in ruby

  - by kamal

  "10.1.3.1" "10.1.3.1" "10.1.3.1" "10.1.3.1" "10.1.3.1" "10.1.3.1" "10.1.3.1" "10.1.3.1" "10.1.3.1" "10.1.3.1" "10.1.3.1" "10.1.3.1" nil "10.1.3.4" "10.1.3.4" "10.1.3.4" "10.1.3.4" "10.1.3.4" "10.1.3.4" "10.1.3.4" "10.1.3.4" "10.1.3.4" "10.1.3.4" "10.1.3.4" "10.1.3.4" nil "10.1.3.10" "10.1.3.10" "10.1.3.10" "10.1.3.10" "10.1.3.10" "10.1.3.10" "10.1.3.10" "10.1.3.10" "10.1.3.10" "10.1.3.10" "10.1.3.10" "10.1.3.10" nil "10.1.3.11" "10.1.3.11" "10.1.3.11" "10.1.3.11" "10.1.3.11" "10.1.3.11" "10.1.3.11" "10.1.3.11" "10.1.3.11" "10.1.3.11" "10.1.3.11" nil "10.1.3.12" "10.1.3.12" "10.1.3.12" "10.1.3.12" "10.1.3.12" "10.1.3.12" "10.1.3.12" "10.1.3.12" "10.1.3.12" "10.1.3.12" "10.1.3.12" nil "10.1.3.30" "10.1.3.30" nil "10.1.3.38" "10.1.3.38" "10.1.3.38" "10.1.3.38" "10.1.3.38" nil "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" "10.1.3.55" nil "10.1.3.60" "10.1.3.60" "10.1.3.60" "10.1.3.60" "10.1.3.60" "10.1.3.60" "10.1.3.60" nil "10.1.3.66" "10.1.3.66" "10.1.3.66" "10.1.3.66" "10.1.3.66" "10.1.3.66" "10.1.3.66" nil "10.1.3.101" "10.1.3.101" nil "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" "10.1.3.102" nil "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" "10.1.3.103" nil "10.1.3.104" "10.1.3.104" nil "10.1.3.106" "10.1.3.106" nil "10.1.3.107" "10.1.3.107" "10.1.3.107" "10.1.3.107" "10.1.3.107" "10.1.3.107" "10.1.3.107" nil "10.1.3.108" "10.1.3.108" "10.1.3.108" "10.1.3.108" "10.1.3.108" "10.1.3.108" nil "10.1.3.110" "10.1.3.110" "10.1.3.110" "10.1.3.110" "10.1.3.110" nil the above string is stdout of: #!/usr/bin/ruby require "rubygems" require "fastercsv" scannedIPs = Hash.new(0) count = 0 FCSV.foreach("HOUND-1.csv", :headers => true, :skip_blanks => false) do |row| text = row[1] p text end

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• NHibernate Mapping and Querying Where Tables are Related But No Foreign Key Constraint

  - by IanT8

  I'm fairly new to NHibernate, and I need to ask a couple of questions relating to a very frequent scenario. The following simplified example illustrates the problem. I have two tables named Equipment and Users. Users is a set of system administrators. Equipment is a set of machinery. Tables: Users table has UserId int and LoginName nvarchar(64). Equipment table has EquipId int, EquipType nvarchar(64), UpdatedBy int. Behavior: System administrators can make changes to Equipment, and when they do, the UpdatedBy field of Equipment is "normally" set to their User Id. Users can be deleted at any time. New Equipment items have an UpdatedBy value of null. There's no foreign key constraint on Equipment.UpdatedBy which means: Equipment.UpdatedBy can be null. Equipment.UpdatedBy value can be = existing User.UserId value Equipment.UpdatedBy value can be = non-existent User.UserId value To find Equipment and who last updated the Equipment, I might query like this: select E.EquipId, E.EquipName, U.UserId, U.LoginName from Equipment E left outer join Users U on. E.UpdatedBy = U.UserId Simple enough. So how to do that in NHibernate? My mappings might be as follows: <?xml version="1.0" encoding="utf-8"?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="Data" assembly="Data"> <class name="User" table="Users"> <id name="Id" column="UserId" unsaved-value="0"> <generator class="native" /> </id> <property name="LoginName" unique="true" not-null="true" /> </class> <class name="Equipment" table="Equipment"> <id name="Id" column="EquipId" type="int" unsaved-value="0"> <generator class="native" /> </id> <property name="EquipType" /> <many-to-one name="UpdatedBy" class="User" column="UpdatedBy" /> </class> </hibernate-mapping> So how do I get all items of equipment and who updated them? using (ISession session = sessionManager.OpenSession()) { List<Data.Equipment> equipList = session .CreateCriteria<Data.Equipment>() // Do I need to SetFetchmode or specify that I // want to join onto User here? If so how? .List<Data.Equipment>(); foreach (Data.Equipment item in equipList) { Debug.WriteLine("\nEquip Id: " + item.Id); Debug.WriteLine("Equip Type: " + item.EquipType); if (item.UpdatedBy.Country != null) Debug.WriteLine("Updated By: " + item.UpdatedBy.LoginName); else Debug.WriteLine("Updated by: Nobody"); } } When Equipment.UpdatedBy = 3 and there is no Users.UserId = 3, the above fail I also have a feeling that the generated SQL is a select all from Equipment followed by many select columns from Users where UserId = n whereas I'd expected NHibernate to left join as per my plain ordinary SQL and do one hit. If I can tell NHibernate to do the query in one hit, how do I do that? Time is of the essence on my project, so any help you could provide is gratefully received. If you're speculating about how NHibernate might work in this scenario, please say you're not absolutely sure. Many thanks.

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• certain Smarty tags don't work in OpenX templates

  - by mikez302

  I am on a team that is developing an OpenX plugin, and I am responsible for the UI. I noticed that if I use certain Smarty tags in my template, the app doesn't work and I see an error message, similar to this: Plugin by name 'Html_select_date' was not found in the registry; used paths: default_views_helpers_: /openx/www/admin/plugins/myApp/application/modules/default/views/helpers/ OX_OXP_UI_View_Helper_: /openx/www/admin/plugins/myApp/application/../library/OX/OXP/UI/View/Helper/ OX_UI_View_Helper_: /openx/www/admin/plugins/myApp/application/../library/OX/UI/View/Helper/ Zend_View_Helper_: Zend/View/Helper/ (stack trace) The stack trace looks like this: #0 /openx/www/admin/plugins/myApp/library/Zend/View/Abstract.php(1117): Zend_Loader_PluginLoader-load('Html_select_dat...') #1 /openx/www/admin/plugins/myApp/library/Zend/View/Abstract.php(568): Zend_View_Abstract-_getPlugin('helper', 'html_select_dat...') #2 /openx/www/admin/plugins/myApp/library/OX/UI/Smarty/SmartyWithViewHelper.php(25): Zend_View_Abstract-getHelper('html_select_dat...') #3 /openx/var/templates_compiled/%2Fdefault%2Fviews%2Fscripts%2Findex%2Fview-reports.html^%%E8^E80^E80B56F2%%view-reports.html.php(38): OX_UI_Smarty_SmartyWithViewHelper-callViewHelper('html_select_dat...', Array) #4 /openx/lib/smarty/Smarty.class.php(1274): include('/openx...') #5 /openx/www/admin/plugins/myApp/library/OX/UI/View/SmartyView.php(103): Smarty-fetch('/openx...') #6 /openx/www/admin/plugins/myApp/library/Zend/View/Abstract.php(832): OX_UI_View_SmartyView-_run('/openx...') #7 /openx/www/admin/plugins/myApp/library/OX/UI/View/SmartyView.php(151): Zend_View_Abstract-render('index/view-repo...') #8 /openx/www/admin/plugins/myApp/library/OX/UI/View/Helper/WithViewScript.php(23): OX_UI_View_SmartyView-render('index/view-repo...') #9 /openx/www/admin/plugins/myApp/application/modules/default/views/helpers/ViewReports.php(5): OX_UI_View_Helper_WithViewScript::renderViewScript('index/view-repo...', Array) #10 /openx/www/admin/plugins/myApp/application/modules/default/controllers/IndexController.php(98): Default_Views_Helpers_ViewReports-renderPage() #11 /openx/www/admin/plugins/myApp/library/Zend/Controller/Action.php(512): IndexController-viewReportsAction() #12 /openx/www/admin/plugins/myApp/library/Zend/Controller/Dispatcher/Standard.php(288): Zend_Controller_Action-dispatch('viewReportsActi...') #13 /openx/www/admin/plugins/myApp/library/Zend/Controller/Front.php(945): Zend_Controller_Dispatcher_Standard-dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #14 /openx/www/admin/plugins/myApp/application/bootstrap.php(117): Zend_Controller_Front-dispatch() #15 /openx/www/admin/plugins/myApp/public/index.php(7): require('/openx...') #16 {main} This does not happen with all Smarty tags. For example, I can use {if}, {foreach}, or {assign} tags without any problems. But whenever I try to use {html_select_date}, {html_image}, or {html_table}, I get the errors. In case this matters, the programmer who is designing the plugin copied the openXWorkflow plugin and made some changes. I noticed that the openXWorkflow plugin has a file (openx/plugins_repo/openXWorkflow/www/admin/plugins/openXWorkflow/library/OX/UI/Smarty/SmartyCompilerWithViewHelper.php) with a class that overrides the default Smarty compiler, supposedly with the ability to compile shorthands for calling ZF view helpers. That file has a list of Smarty functions, but the list is incomplete. If I add the functions to the list, or simply delete the file, my template works fine, but I don't like to change library files. It may make the app hard to maintain, and I don't know if it will mess up something else. The file has the comment "There is no easy access to the list of Smarty's built-in functions so we need to list them here. HTML-specific functions are not included as we cover HTML generation separately.", so it seems like certain Smarty functions may be disabled on purpose for some reason. Will anything bad happen if I try to use them? If, for example, I want to use the {html_select_date} tag in my template, how would I go about doing that? Keep in mind that much of this stuff is new and unfamiliar to me. This is my first time ever using OpenX or Smarty, and I only have a little bit of experience with the Zend framework. Please let me know if we are using the wrong approach.

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• plot markers on google maps with json and jquery

  - by mark

  I am trying to plot the markers as defined in a json file om Google Maps but they don't show on the map. Can somebody help me with this problem? This is the Json file: http://sionvalais.com/gmap/markers/ This is the Javascritp function: function loadMarkers() { var bounds = map.getBounds(); var zoomLevel = map.getZoom(); $.post("/gmaps/markers/index.php", {zoom: zoomLevel, swLat: bounds.getSouthWest().lat(), swLon: bounds.getSouthWest().lng(), neLat: bounds.getNorthEast().lat(), neLon: bounds.getNorthEast().lng()}, function(data) { processMarkers(data, _smallMarkerSize); }, "json" ); } function processMarkers(webcams, markerSize) { var marker = null; var markersInView = new Array(); var idsInView = new Array(); // Loop through the new webcams for (var i = 0; i < webcams.length; i++) { var idx = markers.indexOf(webcams[i].id); if (idx == -1) { var info_html = "<table class='infowindow'>"; info_html += "<tr><td class='img'>"; info_html += "<img src='" + webcams[i].smallimg + "' /><td>"; info_html += "<td><p><b>" + webcams[i].loc + "</b>"; info_html += "<br /><a href='/webcam/" + webcams[i].url + "' target='_blank'>Show webcam</a></p></td></tr>"; info_html += "</table>"; marker = new WebcamMarker(new GLatLng(webcams[i].latitude, webcams[i].longitude), {image: "" + webcams[i].smallimg + "", height: markerSize, width: markerSize}); marker.myhtml = info_html; map.addOverlay(marker); markersInView[webcams[i].id] = marker; } else { markersInView[webcams[i].id] = markers[webcams[i].id]; } idsInView.push(webcams[i].id); } // Now remove the markers outside of the viewport for (var i = 0; i < webcamids.length; i++) { var idx = markersInView.indexOf(webcamids[i]); if (idx == -1) { marker = markers[webcamids[i]]; map.removeOverlay(marker); } } markers = markersInView; webcamids = idsInView; }

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• Deadlock problem

  - by DoomStone

  Hello i'm having a deadlock problem with the following code. It happens when i call the function getMap(). But i can't reealy see what can cause this. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Drawing; using System.Drawing.Imaging; using System.Threading; using AForge; using AForge.Imaging; using AForge.Imaging.Filters; using AForge.Imaging.Textures; using AForge.Math.Geometry; namespace CDIO.Library { public class Polygon { List<IntPoint> hull; public Polygon(List<IntPoint> hull) { this.hull = hull; } public bool inPoly(int x, int y) { int i, j = hull.Count - 1; bool oddNodes = false; for (i = 0; i < hull.Count; i++) { if (hull[i].Y < y && hull[j].Y >= y || hull[j].Y < y && hull[i].Y >= y) { try { if (hull[i].X + (y - hull[i].X) / (hull[j].X - hull[i].X) * (hull[j].X - hull[i].X) < x) { oddNodes = !oddNodes; } } catch (DivideByZeroException e) { if (0 < x) { oddNodes = !oddNodes; } } } j = i; } return oddNodes; } public Rectangle getRectangle() { int x = -1, y = -1, width = -1, height = -1; foreach (IntPoint item in hull) { if (item.X < x || x == -1) x = item.X; if (item.Y < y || y == -1) y = item.Y; if (item.X > width || width == -1) width = item.X; if (item.Y > height || height == -1) height = item.Y; } return new Rectangle(x, y, width-x, height-y); } public Point[] getMap() { List<Point> points = new List<Point>(); lock (hull) { Rectangle rect = getRectangle(); for (int x = rect.X; x <= rect.X + rect.Width; x++) { for (int y = rect.Y; y <= rect.Y + rect.Height; y++) { if (inPoly(x, y)) points.Add(new Point(x, y)); } } } return points.ToArray(); } public float calculateArea() { List<IntPoint> list = new List<IntPoint>(); list.AddRange(hull); list.Add(hull[0]); float area = 0.0f; for (int i = 0; i < hull.Count; i++) { area += list[i].X * list[i + 1].Y - list[i].Y * list[i + 1].X; } area = area / 2; if (area < 0) area = area * -1; return area; } } }

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• XNA: Load and read a XML file?

  - by Rosarch

  I'm having difficulty doing this seemingly simple task. I want to load XML files with the same ease of loading art assets: content = new ContentManager(Services); content.RootDirectory = "Content"; background = content.Load<Texture2D>("images\\ice"); I'm not sure how to do this. This tutorial seems helpful, but how do I get a StorageDevice instance? I do have something working now, but it feels pretty hacky: public IDictionary<string, string> Get(string typeName) { IDictionary<String, String> result = new Dictionary<String, String>(); xmlReader.Read(); // get past the XML declaration string element = null; string text = null; while (xmlReader.Read()) { switch (xmlReader.NodeType) { case XmlNodeType.Element: element = xmlReader.Name; break; case XmlNodeType.Text: text = xmlReader.Value; break; } if (text != null && element != null) { result[element] = text; text = null; element = null; } } return result; } I apply this to the following XML file: <?xml version="1.0" encoding="utf-8" ?> <zombies> <zombie> <health>100</health> <positionX>23</positionX> <positionY>12</positionY> <speed>2</speed> </zombie> </zombies> And it is able to pass this unit test: internal virtual IPersistentState CreateIPersistentState(string fullpath) { IPersistentState target = new ReadWriteXML(File.Open(fullpath, FileMode.Open)); return target; } /// <summary> ///A test for Get with one zombie. ///</summary> //[TestMethod()] public void SimpleGetTest() { string fullPath = "C:\\pathTo\\Data\\SavedZombies.xml"; IPersistentState target = CreateIPersistentState(fullPath); string typeName = "zombie"; IDictionary<string, string> expected = new Dictionary<string, string>(); expected["health"] = "100"; expected["positionX"] = "23"; expected["positionY"] = "12"; expected["speed"] = "2"; IDictionary<string, string> actual = target.Get(typeName); foreach (KeyValuePair<string, string> entry in expected) { Assert.AreEqual(entry.Value, expected[entry.Key]); } } Downsides to the current approach: file loading is done poorly, and matching keys to values seems like it's way more effort than necessary. Also, I suspect this approach would fall apart with more than one entry in the XML.

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• Domain Validation in a CQRS architecture

  - by Jupaol

  Basically I want to know if there is a better way to validate my domain entities. This is how I am planning to do it but I would like your opinion The first approach I considered was: class Customer : EntityBase<Customer> { public void ChangeEmail(string email) { if(string.IsNullOrWhitespace(email)) throw new DomainException(“...”); if(!email.IsEmail()) throw new DomainException(); if(email.Contains(“@mailinator.com”)) throw new DomainException(); } } I actually do not like this validation because even when I am encapsulating the validation logic in the correct entity, this is violating the Open/Close principle (Open for extension but Close for modification) and I have found that violating this principle, code maintenance becomes a real pain when the application grows up in complexity. Why? Because domain rules change more often than we would like to admit, and if the rules are hidden and embedded in an entity like this, they are hard to test, hard to read, hard to maintain but the real reason why I do not like this approach is: if the validation rules change, I have to come and edit my domain entity. This has been a really simple example but in RL the validation could be more complex So following the philosophy of Udi Dahan, making roles explicit, and the recommendation from Eric Evans in the blue book, the next try was to implement the specification pattern, something like this class EmailDomainIsAllowedSpecification : IDomainSpecification<Customer> { private INotAllowedEmailDomainsResolver invalidEmailDomainsResolver; public bool IsSatisfiedBy(Customer customer) { return !this.invalidEmailDomainsResolver.GetInvalidEmailDomains().Contains(customer.Email); } } But then I realize that in order to follow this approach I had to mutate my entities first in order to pass the value being valdiated, in this case the email, but mutating them would cause my domain events being fired which I wouldn’t like to happen until the new email is valid So after considering these approaches, I came out with this one, since I am going to implement a CQRS architecture: class EmailDomainIsAllowedValidator : IDomainInvariantValidator<Customer, ChangeEmailCommand> { public void IsValid(Customer entity, ChangeEmailCommand command) { if(!command.Email.HasValidDomain()) throw new DomainException(“...”); } } Well that’s the main idea, the entity is passed to the validator in case we need some value from the entity to perform the validation, the command contains the data coming from the user and since the validators are considered injectable objects they could have external dependencies injected if the validation requires it. Now the dilemma, I am happy with a design like this because my validation is encapsulated in individual objects which brings many advantages: easy unit test, easy to maintain, domain invariants are explicitly expressed using the Ubiquitous Language, easy to extend, validation logic is centralized and validators can be used together to enforce complex domain rules. And even when I know I am placing the validation of my entities outside of them (You could argue a code smell - Anemic Domain) but I think the trade-off is acceptable But there is one thing that I have not figured out how to implement it in a clean way. How should I use this components... Since they will be injected, they won’t fit naturally inside my domain entities, so basically I see two options: Pass the validators to each method of my entity Validate my objects externally (from the command handler) I am not happy with the option 1 so I would explain how I would do it with the option 2 class ChangeEmailCommandHandler : ICommandHandler<ChangeEmailCommand> { public void Execute(ChangeEmailCommand command) { private IEnumerable<IDomainInvariantValidator> validators; // here I would get the validators required for this command injected, and in here I would validate them, something like this using (var t = this.unitOfWork.BeginTransaction()) { var customer = this.unitOfWork.Get<Customer>(command.CustomerId); this.validators.ForEach(x =. x.IsValid(customer, command)); // here I know the command is valid // the call to ChangeEmail will fire domain events as needed customer.ChangeEmail(command.Email); t.Commit(); } } } Well this is it. Can you give me your thoughts about this or share your experiences with Domain entities validation EDIT I think it is not clear from my question, but the real problem is: Hiding the domain rules has serious implications in the future maintainability of the application, and also domain rules change often during the life-cycle of the app. Hence implementing them with this in mind would let us extend them easily. Now imagine in the future a rules engine is implemented, if the rules are encapsulated outside of the domain entities, this change would be easier to implement

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• How can I position some divs inside an unordered list so they line up with the root element of the l

  - by Ronedog

  I want to position all the divs to line up to the left on the same x coordinate so it looks nice. Notice the picture below, how based on the number of nested categories the div (and its contents) show up at slightly different x coordinates. I need to have the div's line up at exactly the same x coordinate no matter how deeply nested. Note, the bottom most category always has a div for the content, but that div has to be situated inside the last < li . I am using an unordered list to display the menu and thought the best solution would be to grab the root category (Cat 2, and mCat1) and obtain their left offset using jquery, then simply use that value to update the positioning of the div...but I couldn't seem to get it to work just right. I would appreciate any advice or help that you are willing to give. Heres the HTML <ul id="nav> <li>Cat 2 <ul> <li>sub cat2</li> </ul> </li> <li>mCat1 <ul> <li>Subcat A <ul> <li>Subcat A.1 <ul> <li>Annie</li> </ul> </li> </ul> </li> </ul> </li> </ul> Heres some jquery I tried (I have do insert the div inside this .each() loop in order to retrieve some values, but basically, this selector is grabbing the last < li in the menu tree and placing a div after it and that is the div that I want to position. the 245 value was something I was playing around with to see how I could get things to line up, and I know its out of wack, but the problem is still the same no matter what I do: $("#nav li:not(:has(li))").each(function () { var self = $(this); var position = self.offset(); var xLeft = Math.round(position.left)- 245; console.log("xLeft:", xLeft ); self.after( '<div id="' + self.attr('p_node') + '_p_cont_div" class="property_position" style="display:none; left:' + xLeft + 'px;" /> ' ); }); Heres the css: .property_position{ float:left; position: relative; top: 0px; padding-top:5px; padding-bottom:10px; }

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• Android Application Crashel

  - by deewangan

  hello everyone, i am trying to run an application on an android emulator, but it crashes. i am following a howto i don't know what to do, it just crashes. other applications are running fine, can anyone tell me what i am doing wrong.here is the code: public class Finder extends Activity { /** Called when the activity is first created. */ private LocationManager myLocationManager; private LocationListener myLocationListener; private TextView myLatitude, myLongitude; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); myLatitude = (TextView)findViewById(R.id.Latitude); myLongitude = (TextView)findViewById(R.id.Longitude); myLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); myLocationListener = new MyLocationListener(); myLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,myLocationListener); myLatitude.setText(String.valueOf( myLocationManager.getLastKnownLocation( LocationManager.GPS_PROVIDER).getLatitude())); myLongitude.setText(String.valueOf( myLocationManager.getLastKnownLocation( LocationManager.GPS_PROVIDER).getLongitude())); } private class MyLocationListener implements LocationListener{ public void onLocationChanged(Location argLocation) { // TODO Auto-generated method stub myLatitude.setText(String.valueOf( argLocation.getLatitude())); myLongitude.setText(String.valueOf( argLocation.getLongitude())); } public void onProviderDisabled(String provider) { // TODO Auto-generated method stub } public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub } }; } i looked in the logcat after running the application, it seems that the following lines are cause of the problem but i don't understand it:( 01-18 22:12:46.017: WARN/dalvikvm(1091): threadid=3: thread exiting with uncaught exception (group=0x4001aa28) 01-18 22:12:46.017: ERROR/AndroidRuntime(1091): Uncaught handler: thread main exiting due to uncaught exception 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): java.lang.RuntimeException: Unable to start activity ComponentInfo{pro.googleLocation/pro.googleLocation.Finder}: java.lang.NullPointerException 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at android.os.Handler.dispatchMessage(Handler.java:99) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at android.os.Looper.loop(Looper.java:123) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at android.app.ActivityThread.main(ActivityThread.java:4203) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at java.lang.reflect.Method.invokeNative(Native Method) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at java.lang.reflect.Method.invoke(Method.java:521) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at dalvik.system.NativeStart.main(Native Method) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): Caused by: java.lang.NullPointerException 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at pro.googleLocation.Finder.onCreate(Finder.java:28) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 01-18 22:12:46.037: ERROR/AndroidRuntime(1091): ... 11 more

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• Rendering a view to a string in MVC, then redirecting -- workarounds?

  - by James S

  Hi -- I can't render a view to a string and then redirect, despite this answer from Feb (after version 1.0, I think) that claims it's possible. I thought I was doing something wrong, and then I read this answer from Haack in July that claims it's not possible. If somebody has it working and can help me get it working, that's great (and I'll post code, errors). However, I'm now at the point of needing workarounds. There are a few, but nothing ideal. Has anybody solved this, or have any comments on my ideas? This is to render email. While I can surely send the email outside of the web request (store info in a db and get it later), there are many types of emails and I don't want to store the template data (user object, a few other LINQ objects) in a db to let it get rendered later. I could create a simpler, serializable POCO and save that in the db, but why? ... I just want rendered text! I can create a new RedirectToAction object that checks if the headers have been sent (can't figure out how to do this -- try/catch?) and, if so, builds out a simple page with a meta redirect, a javascript redirect, and also a "click here" link. Within my controller, I can remember if I've rendered an email and, if so, manually do #2 by displaying a view. I can manually send the redirect headers before any potential email rendering. Then, rather than using the MVC infrastructure to redirecttoaction, I just call result.end. This seems easiest, but really messy. Anything else? EDIT: I've tried Dan's code (very similar to the code from Jan/Feb that I've already tried) and I'm still getting the same error. The only substantial difference I can see is that his example uses a view while I use a partial view. I'll try testing this later with a view. Here's what I've got: Controller public ActionResult Certifications(string email_intro) { //a lot of stuff ViewData["users"] = users; if (isPost()) { //create the viewmodel var view_model = new ViewModels.Emails.Certifications.Open(userContext) { emailIntro = email_intro }; //i've tried stopping this after just one iteration, in case the problem is due to calling it multiple times foreach (var user in users) { if (user.Email_Address.IsValidEmailAddress()) { //add more stuff to the view model specific to this user view_model.user = user; view_model.certification302Summary.subProcessesOwner = new SubProcess_Certifications(RecordUpdating.Role.Owner, null, null, user.User_ID, repository); //more here.... //if i comment out the next line, everything works ok SendEmail(view_model, this.ControllerContext); } } return RedirectToAction("Certifications"); } return View(); } SendEmail() public static void SendEmail(ViewModels.Emails.Certifications.Open model, ControllerContext context) { var vd = context.Controller.ViewData; vd["model"] = model; var renderer = new CustomRenderers(); //i fixed an error in your code here var text = renderer.RenderViewToString3(context, "~/Views/Emails/Certifications/Open.ascx", "", vd, null); var a = text; } CustomRenderers public class CustomRenderers { public virtual string RenderViewToString3(ControllerContext controllerContext, string viewPath, string masterPath, ViewDataDictionary viewData, TempDataDictionary tempData) { //copy/paste of dan's code } } Error [HttpException (0x80004005): Cannot redirect after HTTP headers have been sent.] System.Web.HttpResponse.Redirect(String url, Boolean endResponse) +8707691 Thanks, James

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• Android Developing App crashes on startup

  - by alexnavratil

  I currently develop an application which contains a custom ListView. I developed a custom array adapter. I think my app crashes here: ListView DirectoryView = (ListView) findViewById(R.id.fileListView); So i think the error is in the activity_main.xml: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ListView android:id="@+id/fileListView" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1" > </ListView> Here is my LogCat: 09-09 11:19:21.254: E/Trace(1152): error opening trace file: No such file or directory (2) 09-09 11:19:21.484: D/AndroidRuntime(1152): Shutting down VM 09-09 11:19:21.484: W/dalvikvm(1152): threadid=1: thread exiting with uncaught exception (group=0x40a13300) 09-09 11:19:21.504: E/AndroidRuntime(1152): FATAL EXCEPTION: main 09-09 11:19:21.504: E/AndroidRuntime(1152): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.teamdroid.explorer/com.teamdroid.explorer.MainActivity}: java.lang.NullPointerException 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.access$600(ActivityThread.java:130) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.os.Handler.dispatchMessage(Handler.java:99) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.os.Looper.loop(Looper.java:137) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.main(ActivityThread.java:4745) 09-09 11:19:21.504: E/AndroidRuntime(1152): at java.lang.reflect.Method.invokeNative(Native Method) 09-09 11:19:21.504: E/AndroidRuntime(1152): at java.lang.reflect.Method.invoke(Method.java:511) 09-09 11:19:21.504: E/AndroidRuntime(1152): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 09-09 11:19:21.504: E/AndroidRuntime(1152): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 09-09 11:19:21.504: E/AndroidRuntime(1152): at dalvik.system.NativeStart.main(Native Method) 09-09 11:19:21.504: E/AndroidRuntime(1152): Caused by: java.lang.NullPointerException 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.Activity.findViewById(Activity.java:1825) 09-09 11:19:21.504: E/AndroidRuntime(1152): at com.teamdroid.explorer.listDirectory.getDirectory(listDirectory.java:20) 09-09 11:19:21.504: E/AndroidRuntime(1152): at com.teamdroid.explorer.MainActivity.onCreate(MainActivity.java:33) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.Activity.performCreate(Activity.java:5008) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 09-09 11:19:21.504: E/AndroidRuntime(1152): ... 11 more Please can you help me. I am searching this error for 2 day. thanks!

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• Function lfit in numerical recipes, providing a test function

  - by Simon Walker

  Hi I am trying to fit collected data to a polynomial equation and I found the lfit function from Numerical Recipes. I only have access to the second edition, so am using that. I have read about the lfit function and its parameters, one of which is a function pointer, given in the documentation as void (*funcs)(float, float [], int)) with the help The user supplies a routine funcs(x,afunc,ma) that returns the ma basis functions evaluated at x = x in the array afunc[1..ma]. I am struggling to understand how this lfit function works. An example function I found is given below: void fpoly(float x, float p[], int np) /*Fitting routine for a polynomial of degree np-1, with coe?cients in the array p[1..np].*/ { int j; p[1]=1.0; for (j=2;j<=np;j++) p[j]=p[j-1]*x; } When I run through the source code for the lfit function in gdb I can see no reference to the funcs pointer. When I try and fit a simple data set with the function, I get the following error message. Numerical Recipes run-time error... gaussj: Singular Matrix ...now exiting to system... Clearly somehow a matrix is getting defined with all zeroes. I am going to involve this function fitting in a large loop so using another language is not really an option. Hence why I am planning on using C/C++. For reference, the test program is given here: int main() { float x[5] = {0., 0., 1., 2., 3.}; float y[5] = {0., 0., 1.2, 3.9, 7.5}; float sig[5] = {1., 1., 1., 1., 1.}; int ndat = 4; int ma = 4; /* parameters in equation */ float a[5] = {1, 1, 1, 0.1, 1.5}; int ia[5] = {1, 1, 1, 1, 1}; float **covar = matrix(1, ma, 1, ma); float chisq = 0; lfit(x,y,sig,ndat,a,ia,ma,covar,&chisq,fpoly); printf("%f\n", chisq); free_matrix(covar, 1, ma, 1, ma); return 0; } Also confusing the issue, all the Numerical Recipes functions are 1 array-indexed so if anyone has corrections to my array declarations let me know also! Cheers

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• How to write this JavaScript code without eval?

  - by karlthorwald

  How to write this JavaScript code without eval? var typeOfString = eval("typeof " + that.modules[modName].varName); if (typeOfString !== "undefined") { doSomething(); } The point is that the name of the var that I want to check for is in a string. Maybe it is simple but I don't know how. Edit: Thank you for the very interesting answers so far. I will follow your suggestions and integrate this into my code and do some testing and report. Could take a while. Edit2: I had another look at the could and maybe itis better I show you a bigger picture. I am greatful for the experts to explain so beautiful, it is better with more code: MYNAMESPACE.Loader = ( function() { function C() { this.modules = {}; this.required = {}; this.waitCount = 0; this.appendUrl = ''; this.docHead = document.getElementsByTagName('head')[0]; } function insert() { var that = this; //insert all script tags to the head now! //loop over all modules: for (var modName in this.required) { if(this.required.hasOwnProperty(modName)){ if (this.required[modName] === 'required') { this.required[modName] = 'loading'; this.waitCount = this.waitCount + 1; this.insertModule(modName); } } } //now poll until everything is loaded or //until timout this.intervalId = 0; var checkFunction = function() { if (that.waitCount === 0) { clearInterval(that.intervalId); that.onSuccess(); return; } for (var modName in that.required) { if(that.required.hasOwnProperty(modName)){ if (that.required[modName] === 'loading') { var typeOfString = eval("typeof " + that.modules[modName].varName); if (typeOfString !== "undefined") { //module is loaded! that.required[modName] = 'ok'; that.waitCount = that.waitCount - 1; if (that.waitCount === 0) { clearInterval(that.intervalId); that.onSuccess(); return; } } } } } }; //execute the function twice a second to check if all is loaded: this.intervalId = setInterval(checkFunction, 500); //further execution will be in checkFunction, //so nothing left to do here } C.prototype.insert = insert; //there are more functions here... return C; }()); var myLoader = new MYNAMESPACE.Loader(); //some more lines here... myLoader.insert();

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• How could I refactor this into more manageable methods?

  - by ChaosPandion

  private static JsonStructure Parse(string jsonText, bool throwException) { var result = default(JsonStructure); var structureStack = new Stack<JsonStructure>(); var keyStack = new Stack<string>(); var current = default(JsonStructure); var currentState = ParserState.Begin; var invalidToken = false; var key = default(string); var value = default(object); foreach (var token in Lexer.Tokenize(jsonText)) { switch (currentState) { case ParserState.Begin: switch (token.Type) { case TokenType.OpenBrace: currentState = ParserState.ObjectKey; current = result = new JsonObject(); break; case TokenType.OpenBracket: currentState = ParserState.ArrayValue; current = result = new JsonArray(); break; default: invalidToken = true; break; } break; case ParserState.ObjectKey: switch (token.Type) { case TokenType.StringLiteral: currentState = ParserState.ColonSeperator; key = (string)token.Value; break; default: invalidToken = true; break; } break; case ParserState.ColonSeperator: switch (token.Type) { case TokenType.Colon: currentState = ParserState.ObjectValue; break; default: invalidToken = true; break; } break; case ParserState.ObjectValue: case ParserState.ArrayValue: switch (token.Type) { case TokenType.NumberLiteral: case TokenType.StringLiteral: case TokenType.BooleanLiteral: case TokenType.NullLiteral: currentState = ParserState.ItemEnd; value = token.Value; break; case TokenType.OpenBrace: structureStack.Push(current); keyStack.Push(key); currentState = ParserState.ObjectKey; current = new JsonObject(); break; case TokenType.OpenBracket: structureStack.Push(current); currentState = ParserState.ArrayValue; current = new JsonArray(); break; default: invalidToken = true; break; } break; case ParserState.ItemEnd: var jsonObject = (current as JsonObject); if (jsonObject != null) { jsonObject.Add(key, value); currentState = ParserState.ObjectKey; } var jsonArray = (current as JsonArray); if (jsonArray != null) { jsonArray.Add(value); currentState = ParserState.ArrayValue; } switch (token.Type) { case TokenType.CloseBrace: case TokenType.CloseBracket: currentState = ParserState.End; break; case TokenType.Comma: break; default: invalidToken = true; break; } break; case ParserState.End: switch (token.Type) { case TokenType.CloseBrace: case TokenType.CloseBracket: case TokenType.Comma: var previous = structureStack.Pop(); var previousJsonObject = (previous as JsonObject); if (previousJsonObject != null) { currentState = ParserState.ObjectKey; previousJsonObject.Add(keyStack.Pop(), current); } var previousJsonArray = (previous as JsonArray); if (previousJsonArray != null) { currentState = ParserState.ArrayValue; previousJsonArray.Add(current); } current = previous; if (token.Type != TokenType.Comma) { currentState = ParserState.End; } break; default: invalidToken = true; break; } break; default: break; } if (invalidToken) { if (throwException) { throw new JsonException(token); } return null; } } return result; }

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• How could I refactor this into more manageable code?

  - by ChaosPandion

  private static JsonStructure Parse(string jsonText, bool throwException) { var result = default(JsonStructure); var structureStack = new Stack<JsonStructure>(); var keyStack = new Stack<string>(); var current = default(JsonStructure); var currentState = ParserState.Begin; var invalidToken = false; var key = default(string); var value = default(object); foreach (var token in Lexer.Tokenize(jsonText)) { switch (currentState) { case ParserState.Begin: switch (token.Type) { case TokenType.OpenBrace: currentState = ParserState.ObjectKey; current = result = new JsonObject(); break; case TokenType.OpenBracket: currentState = ParserState.ArrayValue; current = result = new JsonArray(); break; default: invalidToken = true; break; } break; case ParserState.ObjectKey: switch (token.Type) { case TokenType.StringLiteral: currentState = ParserState.ColonSeperator; key = (string)token.Value; break; default: invalidToken = true; break; } break; case ParserState.ColonSeperator: switch (token.Type) { case TokenType.Colon: currentState = ParserState.ObjectValue; break; default: invalidToken = true; break; } break; case ParserState.ObjectValue: case ParserState.ArrayValue: switch (token.Type) { case TokenType.NumberLiteral: case TokenType.StringLiteral: case TokenType.BooleanLiteral: case TokenType.NullLiteral: currentState = ParserState.ItemEnd; value = token.Value; break; case TokenType.OpenBrace: structureStack.Push(current); keyStack.Push(key); currentState = ParserState.ObjectKey; current = new JsonObject(); break; case TokenType.OpenBracket: structureStack.Push(current); currentState = ParserState.ArrayValue; current = new JsonArray(); break; default: invalidToken = true; break; } break; case ParserState.ItemEnd: var jsonObject = (current as JsonObject); if (jsonObject != null) { jsonObject.Add(key, value); currentState = ParserState.ObjectKey; } var jsonArray = (current as JsonArray); if (jsonArray != null) { jsonArray.Add(value); currentState = ParserState.ArrayValue; } switch (token.Type) { case TokenType.CloseBrace: case TokenType.CloseBracket: currentState = ParserState.End; break; case TokenType.Comma: break; default: invalidToken = true; break; } break; case ParserState.End: switch (token.Type) { case TokenType.CloseBrace: case TokenType.CloseBracket: case TokenType.Comma: var previous = structureStack.Pop(); var previousJsonObject = (previous as JsonObject); if (previousJsonObject != null) { currentState = ParserState.ObjectKey; previousJsonObject.Add(keyStack.Pop(), current); } var previousJsonArray = (previous as JsonArray); if (previousJsonArray != null) { currentState = ParserState.ArrayValue; previousJsonArray.Add(current); } current = previous; if (token.Type != TokenType.Comma) { currentState = ParserState.End; } break; default: invalidToken = true; break; } break; default: break; } if (invalidToken) { if (throwException) { throw new JsonException(token); } return null; } } return result; }

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• Dropdownlist post in ASP.NET MVC3 and Entity Framework Model

  - by Josh Blade

  I have 3 tables: RateProfile RateProfileID ProfileName Rate RateID RateProfileID PanelID Other stuff to update Panel PanelID PanelName I have models for each of these. I have an edit page using the RateProfile model. I display the information for RateProfile and also all of the Rates associated with it. This works fine and I can update it fine. However, I also added a dropdown so that I can filter Rates by PanelID. I need it to post back on change so that it can display the filtered rates. I'm using @Html.DropDownList("PanelID", (SelectList)ViewData["PanelDropDown"], new { onchange = "$('#RateForm').submit()" }) for my dropdownlist. Whenever it posts back to my HttpPost Edit method though, it seems to be missing all information about the Rates navigation property. It's weird because I thought it would do exactly what the input/submit button that I have in the form does (which actually passes the entire model back to my HttpPost Edit action and does what I want it to do). The panelID is properly being passed to my HttpPost Edit method and on to the next view, but when I try to query the Model.Rates navigation property is null (only when the post comes from the dropdown. Everything works fine when the post comes from my submit input). Get Edit: public ActionResult Edit(int id, int panelID = 1) { RateProfile rateprofile = db.RateProfiles.Single(r => r.RateProfileID == id); var panels = db.Panels; ViewData["PanelDropDown"] = new SelectList(panels, "PanelID", "PanelName", panelID); ViewBag.PanelID = panelID; return View(rateprofile); } HttpPost Edit: [HttpPost] public ActionResult Edit(RateProfile rateprofile, int panelID) { var panels = db.Panels; ViewData["PanelDropDown"] = new SelectList(panels, "PanelID", "PanelName", panelID); ViewBag.PanelID = panelID; if (ModelState.IsValid) { db.Entry(rateprofile).State = EntityState.Modified; foreach (Rate dimerate in rateprofile.Rates) { db.Entry(dimerate).State = EntityState.Modified; } db.SaveChanges(); return View(rateprofile); } return View(rateprofile); } View: @model PDR.Models.RateProfile @using (Html.BeginForm(null,null,FormMethod.Post, new {id="RateForm"})) { <div> @Html.Label("Panel") @Html.DropDownList("PanelID", (SelectList)ViewData["PanelDropDown"], new { onchange = "$('#RateForm').submit()" }) </div> @{var rates= Model.Rates.Where(a => a.PanelID == ViewBag.PanelID).OrderBy(a => a.minCount).ToList();} @for (int i = 0; i < rates.Count; i++) { <tr> <td> @Html.HiddenFor(modelItem => rates[i].RateProfileID) @Html.HiddenFor(modelItem => rates[i].RateID) @Html.HiddenFor(modelItem => rates[i].PanelID) @Html.EditorFor(modelItem => rates[i].minCount) @Html.ValidationMessageFor(model => rates[i].minCount) </td> <td> @Html.EditorFor(modelItem => rates[i].maxCount) @Html.ValidationMessageFor(model => rates[i].maxCount) </td> <td> @Html.EditorFor(modelItem => rates[i].Amount) @Html.ValidationMessageFor(model => rates[i].Amount) </td> </tr> } <input type="submit" value="Save" /> } To summarize my problem, the below query in my view only works when the post comes from the submit button and not when it comes from my dropdownlist. @{var rates= Model.Rates.Where(a => a.PanelID == ViewBag.PanelID).OrderBy(a => a.minCount).ToList();}

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• Windows Phone 7 Connect to SharePoint via SOAP

  - by Mitchell Skurnik

  I am making my second application for the Windows 7 Phone Series platform and I cannot seem to connect to a SharePoint server using https. 99% of the following is not my code. I have borrowed it from http://blog.daisley-harrison.com/blog/post/Practical-Silverlight-and-SharePoint-Integration-Part-Two.aspx untill I can further understand how SOAP works in W7P Series. I know that I need some way of sending credentials over but the win 7 API does not seem to let you. ServiceReferences.ClientConfig <?xml version="1.0" encoding="utf-8"?> <configuration> <system.serviceModel> <bindings> <basicHttpBinding> <binding name="ViewsSoap" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" transferMode="Buffered"> <security mode="TransportCredentialOnly"/> </binding> </basicHttpBinding> </bindings> <client> <endpoint address="https://my.secureconnection.com/_vti_bin/views.asmx" binding="basicHttpBinding" bindingConfiguration="ViewsSoap" contract="SharePointListService.ViewsSoap" name="ViewsSoap" /> </client> </system.serviceModel> </configuration> This is my maincode page: public partial class MainPage : PhoneApplicationPage { public MainPage() { InitializeComponent(); SupportedOrientations = SupportedPageOrientation.Portrait | SupportedPageOrientation.Landscape; try { Uri serviceUri = new Uri("https://my.secureconnection.com" + SERVICE_LISTS_URL); BasicHttpBinding binding; if (serviceUri.Scheme == "https") { binding = new BasicHttpBinding(BasicHttpSecurityMode.Transport); } else { binding = new BasicHttpBinding(BasicHttpSecurityMode.None); } EndpointAddress endpoint = new EndpointAddress(serviceUri); ListsSoapClient listSoapClient = new ListsSoapClient(binding, endpoint); NetworkCredential creds = new NetworkCredential("administrator", "iSynergy1", "server001"); //listSoapClient.ClientCredentials.Windows.AllowedImpersonationLevel = TokenImpersonationLevel.Identification; //listSoapClient.ClientCredentials.Windows.ClientCredential = creds; listSoapClient.GetListCollectionCompleted += new EventHandler<GetListCollectionCompletedEventArgs>(listSoapClient_GetListCollectionCompleted); listSoapClient.GetListCollectionAsync(); } catch (Exception exception) { handleException("Failed to get list collection", exception); } } #region ShowExceptionDetail Property public static readonly DependencyProperty ShowExceptionDetailDependencyProperty = DependencyProperty.Register("ShowExceptionDetail",typeof(bool),typeof(Page),new PropertyMetadata(true)); public bool ShowExceptionDetail { get { return (bool)GetValue(ShowExceptionDetailDependencyProperty); } set { SetValue(ShowExceptionDetailDependencyProperty, value); } } #endregion private void handleException(string context, Exception exception) { this.Dispatcher.BeginInvoke(delegate() { bool showExceptionDetail = this.ShowExceptionDetail; string message = ""; Exception next = exception; do { if (message.Length > 0) { message += ";" + Environment.NewLine; } if (next.Message == null || next.Message.Length == 0) { message += next.GetType().FullName; } else { message += next.Message; } if (showExceptionDetail) { if (next.Data.Count > 0) { bool first = true; message += " {"; foreach (string key in next.Data.Keys) { if (first) { first = false; } else { message += ", "; } message += key + "=\"" + next.Data[key] + "\""; } message += "}"; } if (next.InnerException != next) { next = next.InnerException; continue; } } next = null; } while (next != null); MessageBox.Show(message, context, MessageBoxButton.OK); }); } private const string SERVICE_LISTS_URL = "/_vti_bin/lists.asmx"; void listSoapClient_GetListCollectionCompleted(object sender, GetListCollectionCompletedEventArgs e) { try { myList.Text = e.Result.ToString(); } catch (Exception exception) { handleException("Failed to get list collection", exception); } } } When I run this and it gets to the "ListsSoapClient" part, it breaks. If you dig down into the error output it says access is denied. I have tried various methods of sending credentials but none seem to work. "ClientCredentials.Windows" is not supported and ClientCredentials.UsersName.Username is read only.

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• Export GridView to Excel

  - by nCdy

  using Matt's util code (a bit edited for Unicode text) public class GridViewExportUtil { /// <param name="fileName"></param> /// <param name="gv"></param> public static void Export(string fileName, GridView gv) { HttpContext.Current.Response.Clear(); HttpContext.Current.Response.ContentType = "application/ms-excel"; HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache); HttpContext.Current.Response.Charset = System.Text.Encoding.Unicode.EncodingName; HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Unicode; HttpContext.Current.Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble()); HttpContext.Current.Response.AddHeader( "content-disposition", string.Format(//"content-disposition", "attachment; filename=Report.xml"));//, fileName)); // Need .XLS file using (StringWriter sw = new StringWriter()) { using (HtmlTextWriter htw = new HtmlTextWriter(sw)) { // Create a form to contain the grid Table table = new Table(); // add the header row to the table if (gv.HeaderRow != null) { GridViewExportUtil.PrepareControlForExport(gv.HeaderRow); table.Rows.Add(gv.HeaderRow); } // add each of the data rows to the table foreach (GridViewRow row in gv.Rows) { GridViewExportUtil.PrepareControlForExport(row); table.Rows.Add(row); } // add the footer row to the table if (gv.FooterRow != null) { GridViewExportUtil.PrepareControlForExport(gv.FooterRow); table.Rows.Add(gv.FooterRow); } // render the table into the htmlwriter table.RenderControl(htw); // render the htmlwriter into the response HttpContext.Current.Response.Write(sw.ToString()); HttpContext.Current.Response.End(); } } } /// <summary> /// Replace any of the contained controls with literals /// </summary> /// <param name="control"></param> private static void PrepareControlForExport(Control control) { for (int i = 0; i < control.Controls.Count; i++) { Control current = control.Controls[i]; if (current is LinkButton) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text)); } else if (current is ImageButton) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText)); } else if (current is HyperLink) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text)); } else if (current is DropDownList) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text)); } else if (current is CheckBox) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False")); } if (current.HasControls()) { GridViewExportUtil.PrepareControlForExport(current); } } } Question : How to make downloaded file editable (not Read only) And ... XLS wont opens with Unicode format. When I changing format to UTF8 I can't see Russian words :S Second question : How to make Unicode for .xls Third question : How can I save table lines ? Thank you.

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