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  • css: problems with floating a sidebar

    - by user239831
    hey guys, i can't seem to get it working. i have a div.post with #comments and a #respond form underneath it. the div.post contains the #comments and the #respond form. i simply want to float the sidebar to the right of the entire div.post and i cannot seem to get it work. here is an example. any idea how to solve that - its probably quite simple. :) <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>layout</title> <style type="text/css"> body { margin:0; padding:0; } #main { width:100%; background:#cfcfcf; } .inner { margin: 0 auto; padding: 96px 72px 0; width: 1068px; border-color: #000; border-style: solid; border-width: 0 1px; color: #3C3C3C; } .post { width: 705px; background:#999; } #comments, #respond { width: 705px; background:#999; } #sidebar { width:338px; background:#777; margin-left:730px; } </style> </head> <body> <div id="main"> <div class="inner"> <div id="post" class="post"> <h2>Lorem Ipsum Test Page</h2> <div class="entry"> <p>Lorem ipsum sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p> <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p> </div> <!-- entry --> <div id="comments"> <h2>One Response</h2> <ol class="commentlist"> <li id="comment" class="comment"> <div class="comment-body"> <div class="comment-author vcard"> Tom says: </div> <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea found. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p> </div> </li> </ol> </div> <!-- comments --> <div id="respond"> <h2>Leave a Reply</h2> <form id="commentform" method="post" action=""> <input type="text" aria-required="true" tabindex="1" size="22" value="" id="author" name="author" gtbfieldid="230"> <label for="author">Name (required)</label> <input type="text" aria-required="true" tabindex="2" size="22" value="" id="email" name="email" gtbfieldid="231"> <label for="email">Mail (will not be published) (required)</label> <input type="text" tabindex="3" size="22" value="" id="url" name="url" gtbfieldid="232"> <label for="url">Website</label> </div> <textarea tabindex="4" rows="10" cols="58" id="comment" name="comment"></textarea> <input type="submit" value="Submit Comment" tabindex="5" id="submit" name="submit"> <input type="hidden" id="comment_post_ID" value="36" name="comment_post_ID"> <input type="hidden" value="0" id="comment_parent" name="comment_parent"> </form> </div> <!-- respond --> </div> <!-- post --> <div id="sidebar"> <h2>Meta</h2> <ul> <li>Login</li> <li>Anything</li> </ul> <h2>Subscribe</h2> <ul> <li>Entries (RSS)</li> <li>Comments (RSS)</li> </ul> </div> <!-- sidebar --> </div> <!-- inner --> </div> <!-- main --> </body> </html> edit: can you see any errors in my html. firebug says that the sidebar div is actually outside the .inner div. however if i look at the code it's inside.

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  • Asp.net Google Charts SSL handler for GeoMap

    - by Ian
    Hi All, I am trying to view Google charts in a site using SSL. Google Charts do not support SSL so if we use the standard charts, we get warning messages. My plan is to create a ASHX handler that is co9ntained in the secure site that will retrieve the content from Google and serve this to the page the user is viewing. Using VS 2008 SP1 and the included web server, my idea works perfectly for both Firefox and IE 8 & 9(Preview) and I am able to see my geomap displayed on my page as it should be. But my problem is when I publish to IIS7 the page using my handler to generate the geomap works in Firefox but not IE(every version). There are no errors anywhere or in any log files, but when i right click in IE in the area where the map should be displayed, I see the message in the context menu saying "movie not loaded" Below is the code from my handler and the aspx page. I have disabled compression in my web.config. Even in IE I am hitting all my break points and when I use the IE9 Developer tools, the web page is correctly generated with all the correct code, url's and references. If you have any better ways to accomplish this or how i can fix my problem, I will appreciate it. Thanks Ian Handler(ASHX) public void ProcessRequest(HttpContext context) { String url = "http://charts.apis.google.com/jsapi"; string query = context.Request.QueryString.ToString(); if (!string.IsNullOrEmpty(query)) { url = query; } HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(HttpUtility.UrlDecode(url))); request.UserAgent = context.Request.UserAgent; WebResponse response = request.GetResponse(); string PageContent = string.Empty; StreamReader Reader; Stream webStream = response.GetResponseStream(); string contentType = response.ContentType; context.Response.BufferOutput = true; context.Response.ContentType = contentType; context.Response.Cache.SetCacheability(HttpCacheability.NoCache); context.Response.Cache.SetNoServerCaching(); context.Response.Cache.SetMaxAge(System.TimeSpan.Zero); string newUrl = IanLearning.Properties.Settings.Default.HandlerURL; //"https://localhost:444/googlesecurecharts.ashx?"; if (response.ContentType.Contains("javascript")) { Reader = new StreamReader(webStream); PageContent = Reader.ReadToEnd(); PageContent = PageContent.Replace("http://", newUrl + "http://"); PageContent = PageContent.Replace("charts.apis.google.com", newUrl + "charts.apis.google.com"); PageContent = PageContent.Replace(newUrl + "http://maps.google.com/maps/api/", "http://maps.google.com/maps/api/"); context.Response.Write(PageContent); } else { { byte[] bytes = ReadFully(webStream); context.Response.BinaryWrite(bytes); } } context.Response.Flush(); response.Close(); webStream.Close(); context.Response.End(); context.ApplicationInstance.CompleteRequest(); } ASPX Page <%@ Page Title="" Language="C#" MasterPageFile="~/Site2.Master" AutoEventWireup="true" CodeBehind="googlechart.aspx.cs" Inherits="IanLearning.googlechart" %> <asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server"> <script type='text/javascript' src='~/googlesecurecharts.ashx?'></script> <script type='text/javascript'> google.load('visualization', '1', { 'packages': ['geomap'] }); google.setOnLoadCallback(drawMap); var geomap; function drawMap() { var data = new google.visualization.DataTable(); data.addRows(6); data.addColumn('string', 'City'); data.addColumn('number', 'Sales'); data.setValue(0, 0, 'ZA'); data.setValue(0, 1, 200); data.setValue(1, 0, 'US'); data.setValue(1, 1, 300); data.setValue(2, 0, 'BR'); data.setValue(2, 1, 400); data.setValue(3, 0, 'CN'); data.setValue(3, 1, 500); data.setValue(4, 0, 'IN'); data.setValue(4, 1, 600); data.setValue(5, 0, 'ZW'); data.setValue(5, 1, 700); var options = {}; options['region'] = 'world'; options['dataMode'] = 'regions'; options['showZoomOut'] = false; var container = document.getElementById('map_canvas'); geomap = new google.visualization.GeoMap(container); google.visualization.events.addListener( geomap, 'regionClick', function(e) { drillDown(e['region']); }); geomap.draw(data, options); }; function drillDown(regionData) { alert(regionData); } </script> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server"> <div id='map_canvas'> </div> </asp:Content>

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  • Parsing tables, cells with Html agility in C#

    - by Kaeso
    I need to parse Html code. More specifically, parse each cell of every rows in all tables. Each row represent a single object and each cell represent different properties. I want to parse these to be able to write an XML file with every data inside (without the useless HTML code). This is the way I thought it out initially but I ran out of ideas: HTML: <tr> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF"> 1 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="left"> <a href="/ice/player.htm?id=8471675">Sidney Crosby</a> </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="center"> PIT </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="center"> C </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 39 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 32 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 33 </td> <td class="statBox sorted" style="border-width:0px 1px 1px 0px; background-color: #E0E0E0" align="right"> <font color="#000000"> 65 </font> </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 20 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 29 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 10 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 1 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 3 </td> <td class="statBox" style="border-width:0px 0px 1px 0px; background-color: #FFFFFF" align="right"> </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 0 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 154 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 20.8 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 21:54 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 22.6 </td> <td class="statBox" style="border-width:0px 0px 1px 0px; background-color: #FFFFFF" align="right"> 55.7 </td> </tr> C#: using HtmlAgilityPack; using System.Data; namespace Stats { class StatsParser { private string htmlCode; private static string fileName = "[" + DateTime.Now.ToShortDateString() + " NHL Stats].xml"; public StatsParser(string htmlCode) { this.htmlCode = htmlCode; this.ParseHtml(); } public DataTable ParseHtml() { var result = new DataTable(); HtmlDocument doc = new HtmlDocument(); doc.LoadHtml(htmlCode); HtmlNode row = doc.DocumentNode.SelectNodes("//tr"); foreach (var statBox in row.SelectNodes("//td[@class='statBox']")) { System.Windows.MessageBox.Show(statBox.InnerText); } } } }

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  • migrating Solaris to RH: network latency issue, tcp window size & other tcp parameters

    - by Bastien
    Hello I have a client/server app (Java) that I'm migrating from Solaris to RH Linux. since I started running it in RH, I noticed some issues related to latency. I managed to isolate the problem that looks like this: client sends 5 messages (32 bytes each) in a row (same application timestamp) to the server. server echos messages. client receives replies and prints round trip time for each msg. in Solaris, all is well: I get ALL 5 replies at the same time, roughly 80ms after having sent original messages (client & server are several thousands miles away from each other: my ping RTT is 80ms, all normal). in RH, first 3 messages are echoed normally (they arrive 80ms after they've been sent), however the following 2 arrive 80ms later (so total 160ms RTT). the pattern is always the same. clearly looked like a TCP problem. on my solaris box, I had previously configured the tcp stack with 2 specific options: disable nagle algorithm globally set tcp_deferred_acks_max to 0 on RH, it's not possible to disable nagle globally, but I disabled it on all of my apps' sockets (TCP_NODELAY). so I started playing with tcpdump (on the server machine), and compared both outputs: SOLARIS: 22 2.085645 client server TCP 56150 > 6006 [PSH, ACK] Seq=111 Ack=106 Win=66672 Len=22 "MSG_1 RCV" 23 2.085680 server client TCP 6006 > 56150 [ACK] Seq=106 Ack=133 Win=50400 Len=0 24 2.085908 client server TCP 56150 > 6006 [PSH, ACK] Seq=133 Ack=106 Win=66672 Len=22 "MSG_2 RCV" 25 2.085925 server client TCP 6006 > 56150 [ACK] Seq=106 Ack=155 Win=50400 Len=0 26 2.086175 client server TCP 56150 > 6006 [PSH, ACK] Seq=155 Ack=106 Win=66672 Len=22 "MSG_3 RCV" 27 2.086192 server client TCP 6006 > 56150 [ACK] Seq=106 Ack=177 Win=50400 Len=0 28 2.086243 server client TCP 6006 > 56150 [PSH, ACK] Seq=106 Ack=177 Win=50400 Len=21 "MSG_1 ECHO" 29 2.086440 client server TCP 56150 > 6006 [PSH, ACK] Seq=177 Ack=106 Win=66672 Len=22 "MSG_4 RCV" 30 2.086454 server client TCP 6006 > 56150 [ACK] Seq=127 Ack=199 Win=50400 Len=0 31 2.086659 server client TCP 6006 > 56150 [PSH, ACK] Seq=127 Ack=199 Win=50400 Len=21 "MSG_2 ECHO" 32 2.086708 client server TCP 56150 > 6006 [PSH, ACK] Seq=199 Ack=106 Win=66672 Len=22 "MSG_5 RCV" 33 2.086721 server client TCP 6006 > 56150 [ACK] Seq=148 Ack=221 Win=50400 Len=0 34 2.086947 server client TCP 6006 > 56150 [PSH, ACK] Seq=148 Ack=221 Win=50400 Len=21 "MSG_3 ECHO" 35 2.087196 server client TCP 6006 > 56150 [PSH, ACK] Seq=169 Ack=221 Win=50400 Len=21 "MSG_4 ECHO" 36 2.087500 server client TCP 6006 > 56150 [PSH, ACK] Seq=190 Ack=221 Win=50400 Len=21 "MSG_5 ECHO" 37 2.165390 client server TCP 56150 > 6006 [ACK] Seq=221 Ack=148 Win=66632 Len=0 38 2.166314 client server TCP 56150 > 6006 [ACK] Seq=221 Ack=190 Win=66588 Len=0 39 2.364135 client server TCP 56150 > 6006 [ACK] Seq=221 Ack=211 Win=66568 Len=0 REDHAT: 17 2.081163 client server TCP 55879 > 6006 [PSH, ACK] Seq=111 Ack=106 Win=66672 Len=22 "MSG_1 RCV" 18 2.081178 server client TCP 6006 > 55879 [ACK] Seq=106 Ack=133 Win=5888 Len=0 19 2.081297 server client TCP 6006 > 55879 [PSH, ACK] Seq=106 Ack=133 Win=5888 Len=21 "MSG_1 ECHO" 20 2.081711 client server TCP 55879 > 6006 [PSH, ACK] Seq=133 Ack=106 Win=66672 Len=22 "MSG_2 RCV" 21 2.081761 client server TCP 55879 > 6006 [PSH, ACK] Seq=155 Ack=106 Win=66672 Len=22 "MSG_3 RCV" 22 2.081846 server client TCP 6006 > 55879 [PSH, ACK] Seq=127 Ack=177 Win=5888 Len=21 "MSG_2 ECHO" 23 2.081995 server client TCP 6006 > 55879 [PSH, ACK] Seq=148 Ack=177 Win=5888 Len=21 "MSG_3 ECHO" 24 2.082011 client server TCP 55879 > 6006 [PSH, ACK] Seq=177 Ack=106 Win=66672 Len=22 "MSG_4 RCV" 25 2.082362 client server TCP 55879 > 6006 [PSH, ACK] Seq=199 Ack=106 Win=66672 Len=22 "MSG_5 RCV" 26 2.082377 server client TCP 6006 > 55879 [ACK] Seq=169 Ack=221 Win=5888 Len=0 27 2.171003 client server TCP 55879 > 6006 [ACK] Seq=221 Ack=148 Win=66632 Len=0 28 2.171019 server client TCP 6006 > 55879 [PSH, ACK] Seq=169 Ack=221 Win=5888 Len=42 "MSG_4 ECHO + MSG_5 ECHO" 29 2.257498 client server TCP 55879 > 6006 [ACK] Seq=221 Ack=211 Win=66568 Len=0 so, I got confirmation things are not working correctly for RH: packet 28 is sent TOO LATE, it looks like the server is waiting for packet 27's ACK before doing anything. seems to me it's the most likely reason... then I realized that the "Win" parameters are different on Solaris & RH dumps: 50400 on Solaris, only 5888 on RH. that's another hint... I read the doc about the slide window & buffer window, and played around with the rcvBuffer & sendBuffer in java on my sockets, but never managed to change this 5888 value to anything else (I checked each time directly with tcpdump). does anybody know how to do this ? I'm having a hard time getting definitive information, as in some cases there's "auto-negotiation" that I might need to bypass, etc... I eventually managed to get only partially rid of my initial problem by setting the "tcp_slow_start_after_idle" parameter to 0 on RH, but it did not change the "win" parameter at all. the same problem was there for the first 4 groups of 5 messages, with TCP retransmission & TCP Dup ACK in tcpdump, then the problem disappeared altogether for all following groups of 5 messages. It doesn't seem like a very clean and/or generic solution to me. I'd really like to reproduce the exact same conditions under both OSes. I'll keep researching, but any help from TCP gurus would be greatly appreciated ! thanks !

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  • JPA behaviour...

    - by Marcel
    Hi I have some trouble understanding a JPA behaviour. Mabye someone could give me a hint. Situation: Product entity: @Entity public class Product implements Serializable { ... @OneToMany(mappedBy="product", fetch=FetchType.EAGER) private List<ProductResource> productResources = new ArrayList<ProductResource>(); .... public List<ProductResource> getProductResources() { return productResources; } public boolean equals(Object obj) { if (obj == this) return true; if (obj == null) return false; if (!(obj instanceof Product)) return false; Product p = (Product) obj; return p.productId == productId; } } Resource entity: @Entity public class Resource implements Serializable { ... @OneToMany(mappedBy="resource", fetch=FetchType.EAGER) private List<ProductResource> productResources = new ArrayList<ProductResource>(); ... public void setProductResource(List<ProductResource> productResource) { this.productResources = productResource; } public List<ProductResource> getProductResources() { return productResources; } public boolean equals(Object obj) { if (obj == this) return true; if (obj == null) return false; if (!(obj instanceof Resource)) return false; Resource r = (Resource) obj; return (long)resourceId==(long)r.resourceId; } } ProductResource Entity: This is a JoinTable (association class) with additional properties (amount). It maps Product and Resources. @Entity public class ProductResource implements Serializable { ... @JoinColumn(nullable=false, updatable=false) @ManyToOne(fetch=FetchType.EAGER, cascade=CascadeType.PERSIST) private Product product; @JoinColumn(nullable=false, updatable=false) @ManyToOne(fetch=FetchType.EAGER, cascade=CascadeType.PERSIST) private Resource resource; private int amount; public void setProduct(Product product) { this.product = product; if(!product.getProductResources().contains((this))){ product.getProductResources().add(this); } } public Product getProduct() { return product; } public void setResource(Resource resource) { this.resource = resource; if(!resource.getProductResources().contains((this))){ resource.getProductResources().add(this); } } public Resource getResource() { return resource; } ... public boolean equals(Object obj) { if (obj == this) return true; if (obj == null) return false; if (!(obj instanceof ProductResource)) return false; ProductResource pr = (ProductResource) obj; return (long)pr.productResourceId == (long)productResourceId; } } This is the Session Bean (running on glassfish). @Stateless(mappedName="PersistenceManager") public class PersistenceManagerBean implements PersistenceManager { @PersistenceContext(unitName = "local_mysql") private EntityManager em; public Object create(Object entity) { em.persist(entity); return entity; } public void delete(Object entity) { em.remove(em.merge(entity)); } public Object retrieve(Class entityClass, Long id) { Object entity = em.find(entityClass, id); return entity; } public void update(Object entity) { em.merge(entity); } } I call the session Bean from a java client: public class Start { public static void main(String[] args) throws NamingException { PersistenceManager pm = (PersistenceManager) new InitialContext().lookup("java:global/BackITServer/PersistenceManagerBean"); ProductResource pr = new ProductResource(); Product p = new Product(); Resource r = new Resource(); pr.setProduct(p); pr.setResource(r); ProductResource pr_stored = (ProductResource) pm.create(pr); pm.delete(pr_stored); Product p_ret = (Product) pm.retrieve(Product.class, pr_stored.getProduct().getProductId()); // prints out true ???????????????????????????????????? System.out.println(p_ret.getProductResources().contains(pr_stored)); } } So here comes my problem. Why is the ProductResource entity still in the List productResources(see code above). The productResource tuple in the db is gone after the deletion and I do newly retrieve the Product entity. If I understood right every method call of the client happens in a new persistence context, but here i obviously get back the non-refreshed product object!? Any help is appreciated Thanks Marcel

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  • storing session data in mysql using php is not retrieving the data properly from the tables.

    - by Ronedog
    I have a problem retrieving some data from the $_SESSION using php and mysql. I've commented out the line in php.ini that tells the server to use the "file" to store the session info so my database will be used. I have a class that I use to write the information to the database and its working fine. When the user passes their credentials the class gets instantiated and the $_SESSION vars get set, then the user gets redirected to the index page. The index.php page includes the file where the db session class is, which when instantiated calles session_start() and the session variables should be in $_SESSION, but when I do var_dump($_SESSION) there is nothing in the array. However, when I look at the data in mysql, all the session information is in there. Its acting like session_start() has not been called, but by instantiating the class it is. Any idea what could be wrong? Here's the HTML: <?php include_once "classes/phpsessions_db/class.dbsession.php"; //used for sessions var_dump($_SESSION); ?> <html> . . . </html> Here's the dbsession class: <?php error_reporting(E_ALL); class dbSession { function dbSession($gc_maxlifetime = "", $gc_probability = "", $gc_divisor = "") { // if $gc_maxlifetime is specified and is an integer number if ($gc_maxlifetime != "" && is_integer($gc_maxlifetime)) { // set the new value @ini_set('session.gc_maxlifetime', $gc_maxlifetime); } // if $gc_probability is specified and is an integer number if ($gc_probability != "" && is_integer($gc_probability)) { // set the new value @ini_set('session.gc_probability', $gc_probability); } // if $gc_divisor is specified and is an integer number if ($gc_divisor != "" && is_integer($gc_divisor)) { // set the new value @ini_set('session.gc_divisor', $gc_divisor); } // get session lifetime $this->sessionLifetime = ini_get("session.gc_maxlifetime"); //Added by AARON. cancel the session's auto start,important, without this the session var's don't show up on next pg. session_write_close(); // register the new handler session_set_save_handler( array(&$this, 'open'), array(&$this, 'close'), array(&$this, 'read'), array(&$this, 'write'), array(&$this, 'destroy'), array(&$this, 'gc') ); register_shutdown_function('session_write_close'); // start the session @session_start(); } function stop() { $new_sess_id = $this->regenerate_id(true); session_unset(); session_destroy(); return $new_sess_id; } function regenerate_id($return_val=false) { // saves the old session's id $oldSessionID = session_id(); // regenerates the id // this function will create a new session, with a new id and containing the data from the old session // but will not delete the old session session_regenerate_id(); // because the session_regenerate_id() function does not delete the old session, // we have to delete it manually //$this->destroy($oldSessionID); //ADDED by aaron // returns the new session id if($return_val) { return session_id(); } } function open($save_path, $session_name) { // global $gf; // $gf->debug_this($gf, "GF: Opening Session"); // change the next values to match the setting of your mySQL database $mySQLHost = "localhost"; $mySQLUsername = "user"; $mySQLPassword = "pass"; $mySQLDatabase = "sessions"; $link = mysql_connect($mySQLHost, $mySQLUsername, $mySQLPassword); if (!$link) { die ("Could not connect to database!"); } $dbc = mysql_select_db($mySQLDatabase, $link); if (!$dbc) { die ("Could not select database!"); } return true; } function close() { mysql_close(); return true; } function read($session_id) { $result = @mysql_query(" SELECT session_data FROM session_data WHERE session_id = '".$session_id."' AND http_user_agent = '".$_SERVER["HTTP_USER_AGENT"]."' AND session_expire > '".time()."' "); // if anything was found if (is_resource($result) && @mysql_num_rows($result) > 0) { // return found data $fields = @mysql_fetch_assoc($result); // don't bother with the unserialization - PHP handles this automatically return unserialize($fields["session_data"]); } // if there was an error return an empty string - this HAS to be an empty string return ""; } function write($session_id, $session_data) { // global $gf; // first checks if there is a session with this id $result = @mysql_query(" SELECT * FROM session_data WHERE session_id = '".$session_id."' "); // if there is if (@mysql_num_rows($result) > 0) { // update the existing session's data // and set new expiry time $result = @mysql_query(" UPDATE session_data SET session_data = '".serialize($session_data)."', session_expire = '".(time() + $this->sessionLifetime)."' WHERE session_id = '".$session_id."' "); // if anything happened if (@mysql_affected_rows()) { // return true return true; } } else // if this session id is not in the database { // $gf->debug_this($gf, "inside dbSession, trying to write to db because session id was NOT in db"); $sql = " INSERT INTO session_data ( session_id, http_user_agent, session_data, session_expire ) VALUES ( '".serialize($session_id)."', '".$_SERVER["HTTP_USER_AGENT"]."', '".$session_data."', '".(time() + $this->sessionLifetime)."' ) "; // insert a new record $result = @mysql_query($sql); // if anything happened if (@mysql_affected_rows()) { // return an empty string return ""; } } // if something went wrong, return false return false; } function destroy($session_id) { // deletes the current session id from the database $result = @mysql_query(" DELETE FROM session_data WHERE session_id = '".$session_id."' "); // if anything happened if (@mysql_affected_rows()) { // return true return true; } // if something went wrong, return false return false; } function gc($maxlifetime) { // it deletes expired sessions from database $result = @mysql_query(" DELETE FROM session_data WHERE session_expire < '".(time() - $maxlifetime)."' "); } } //End of Class $session = new dbsession(); ?>

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  • Curl_errno=55, "Failed sending network data."

    - by 4dplane
    Hi all: I have a php script that updates a database via an api. This script works on one server but not on another. Both servers have curl enabled and they have php 5.2.6 or above. The error happens in the do_put() method. The rest of the script seems to be fine. I have found that: curl_errno= 55 = "Failed sending network data". curl_error= select/poll returned error <?php //phpinfo(); require_once "class.DelveAuthUtil.php"; $access_key = ""; $secret = "W"; $org_id = ""; $media_id = ""; $new_tag_name = "uvideo"; $assign_tag_to_media_url = "http://api..com/rest/organizations/$org_id/media/$media_id/properties/tags/$new_tag_name"; $signed_create_new_tag_url = DAU::authenticate_request("PUT", $assign_tag_to_media_url, $access_key, $secret); # perform the creation of the new custom property $put_response = do_put($signed_create_new_tag_url); # Execute the POST function do_post($url, $params=array()) { # Combine parameters $param_string = ""; foreach ($params as $key => $value) { $value = urlencode($value); $param_string = $param_string . "&$key=$value"; } // Get the curl session object $session = curl_init($url); // Set the POST options. curl_setopt ($session, CURLOPT_POST, true); curl_setopt ($session, CURLOPT_POSTFIELDS, $param_string); curl_setopt($session, CURLOPT_HEADER, false); curl_setopt($session, CURLOPT_RETURNTRANSFER, true); // Do the POST and then close the session $response = curl_exec($session); curl_close($session); return $response; } # Execute the PUT function do_put($url) { // Get the curl session object $session = curl_init($url); print(" <br> session= " . $session . "<br>"); // Set the PUT options. print ("opt0= " . curl_setopt($session, CURLOPT_VERBOSE, TRUE) . "<br>"); print ("opt1= " . curl_setopt ($session, CURLOPT_PUT, true) . "<br>"); print ("opt2= " . curl_setopt ($session, CURLOPT_HEADER, false) . "<br>"); print ("opt3= " . curl_setopt ($session, CURLOPT_RETURNTRANSFER, true) . "<br>"); // Do the PUT and then close the session $response = curl_exec($session); if (curl_errno($session)) { print ( "curl_errno= " . curl_errno($session). "<br>"); print( "curl_error= " . curl_error($session) . "<br>"); } else { curl_close($session); } } I have small lead in the Apache log - there is an SSL issue that I do not know how to resolve. [Thu Mar 25 15:57:58 2010] [warn] Init: You should not use name-based virtual hosts in conjunction with SSL!! [Thu Mar 25 15:57:58 2010] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations [Thu Mar 25 15:58:59 2010] [notice] caught SIGTERM, shutting down [Thu Mar 25 15:58:59 2010] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec) [Thu Mar 25 15:58:59 2010] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?) [Thu Mar 25 15:58:59 2010] [warn] RSA server certificate CommonName (CN) `yourvps.a2hosting.com' does NOT match server name!? [Thu Mar 25 15:58:59 2010] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?) [Thu Mar 25 15:58:59 2010] [warn] RSA server certificate CommonName (CN) `yourvps.a2hosting.com' does NOT match server name!? [Thu Mar 25 15:58:59 2010] [warn] Init: SSL server IP/port conflict: my1.com:443 (/home/httpd/my.com/conf/kloxo.my1.com:69) vs. elggtest.my1.com:443 (/home/httpd/elggtest.my1.com/conf/kloxo.elggtest.my1.com:71) [Thu Mar 25 15:58:59 2010] [warn] Init: You should not use name-based virtual hosts in conjunction with SSL!! [Thu Mar 25 15:58:59 2010] [notice] Digest: generating secret for digest authentication ... [Thu Mar 25 15:58:59 2010] [notice] Digest: done [Thu Mar 25 15:59:00 2010] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?) [Thu Mar 25 15:59:00 2010] [warn] RSA server certificate CommonName (CN) `yourvps.a2hosting.com' does NOT match server name!? [Thu Mar 25 15:59:00 2010] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?) [Thu Mar 25 15:59:00 2010] [warn] RSA server certificate CommonName (CN) `yourvps.a2hosting.com' does NOT match server name!? [Thu Mar 25 15:59:00 2010] [warn] Init: SSL server IP/port conflict: my1.com:443 (/home/httpd/my1.com/conf/kloxo.my1.com:69) vs. elggtest.my1.com:443 (/home/httpd/elggtest.my1.com/conf/kloxo.elggtest.my1.com:71) [Thu Mar 25 15:59:00 2010] [warn] Init: You should not use name-based virtual hosts in conjunction with SSL!! [Thu Mar 25 15:59:00 2010] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations[/PHP] Any help would be great! Thanks, 4dplane

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  • HTML client-side portable file generation - no external resources or server calls

    - by awashburn
    I have the following situation: I have set up a series of Cron jobs on an internal company server to run various PHP scripts designed to check data integrity. Each PHP script queries a company database, formats the returned query data into an HTML file containing one or more <tables>, and then mails the HTML file to several client emails as an attachment. From my experience, most of the PHP scripts generate HTML files with only a few tables, however there are a few PHP scripts the create HTML files with around 30 tables. HTML files have been chosen as the distribution format of these scans because HTML makes it easy to view many tables at once in a browser window. I would like to add the functionality for the clients to download a table in the HTML file as a CSV file. I anticipate clients using this feature when they suspect a data integrity issue based on the table data. It would be ideal for them to be able to take the table in question, export the data out to a CSV file, and then study it further. Because need for exporting the data to CSV format is at the discretion of the client, unpredictable as to what table will be under scrutiny, and intermittently used I do not want to create CSV files for every table. Normally creating a CSV file wouldn't be too difficult, using JavaScript/jQuery to preform DOM traversal and generate the CSV file data into a string utilizing a server call or flash library to facilitate the download process; but I have one limiting constraint: The HTML file needs to be "portable." I would like the clients to be able to take their HTML file and preform analysis of the data outside the company intranet. Also it is likely these HTML files will be archived, so making the export functionality "self contained" in the HTML files is a highly desirable feature for the two previous reasons. The "portable" constraint of CSV file generation from a HTML file means: I cannot make a server call. This means ALL the file generation must be done client-side. I want the single HTML file attached to the email to contain all the resources to generate the CSV file. This means I cannot use jQuery or flash libraries to generate the file. I understand, for obvious security reasons, that writing out files to disk using JavaScript isn't supported by any browser. I don't want to create a file without the user knowledge; I would like to generate the file using JavaScript in memory and then prompt the user the "download" the file from memory. I have looked into generating the CSV file as a URI however, according to my research and testing, this approach has a few problems: URIs for files are not supported by IE (See Here) URIs in FireFox saves the file with a random file name and as a .part file As much as it pains me, I can accept the fact the IE<=v9 won't create a URI for files. I would like to create a semi-cross-browser solution in which Chrome, Firefox, and Safari create a URI to download the CSV file after JavaScript DOM traversal compiles the data. My Example Table: <table> <thead class="resulttitle"> <tr> <th style="text-align:center;" colspan="3"> NameOfTheTable</th> </tr> </thead> <tbody> <tr class="resultheader"> <td>VEN_PK</td> <td>VEN_CompanyName</td> <td>VEN_Order</td> </tr> <tr> <td class='resultfield'>1</td> <td class='resultfield'>Brander Ranch</td> <td class='resultfield'>Beef</td> </tr> <tr> <td class='resultfield'>2</td> <td class='resultfield'>Super Tree Produce</td> <td class='resultfield'>Apples</td> </tr> <tr> <td class='resultfield'>3</td> <td class='resultfield'>John's Distilery</td> <td class='resultfield'>Beer</td> </tr> </tbody> <tfoot> <tr> <td colspan="3" style="text-align:right;"> <button onclick="doSomething(this);">Export to CSV File</button></td> </tr> </tfoot> </table> My Example JavaScript: <script type="text/javascript"> function doSomething(inButton) { /* locate elements */ var table = inButton.parentNode.parentNode.parentNode.parentNode; var name = table.rows[0].cells[0].textContent; var tbody = table.tBodies[0]; /* create CSV String through DOM traversal */ var rows = tbody.rows; var csvStr = ""; for (var i=0; i < rows.length; i++) { for (var j=0; j < rows[i].cells.length; j++) { csvStr += rows[i].cells[j].textContent +","; } csvStr += "\n"; } /* temporary proof DOM traversal was successful */ alert("Table Name:\t" + name + "\nCSV String:\n" + csvStr); /* Create URI Here! * (code I am missing) */ /* Approach 1 : Auto-download * downloads CSV data but: * In FireFox downloads as randomCharacers.part instead of name.csv * In Chrome downloads without prompting the user * In Safari opens the files in browser (textfile) */ //var hrefData = "data:text/csv;charset=US-ASCII," + encodeURIComponent(csvStr); //document.location.href = hrefData; /* Approach 2 : Right-Click Save As... */ var hrefData = "data:text/csv;charset=US-ASCII," + encodeURIComponent(csvStr); var fileLink = document.createElement("a"); fileLink.href = hrefData; fileLink.innerHTML = "download"; parentTD = inButton.parentNode; parentTD.appendChild(fileLink); parentTD.removeChild(inButton); } </script> I am looking for an example solution in which the above example table can be downloaded as a CSV file: using a URI the user is prompted to save the file the default filename is the name of the table. code works as described in modern versions of FireFox, Safari, & Chrome I have added a <script> tag with the DOM traversal function doSomething(). The real help I need is with formatting the URI to what I want within the doSomething() function.

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  • Out of memory exception during scrolling of listview

    - by user1761316
    I am using facebook data like postedpicture,profile picture,name,message in my listview.I am getting an OOM error while doing fast scrolling of listview. I am also having scrollviewlistener in my application that loads more data when the scrollbar reaches the bottom of the screen.I just want to know whether I need to change anything in this class. imageLoader.DisplayImage(postimage.get(position).replace(" ", "%20"), postimg) ; I am using the above line to call the method in this imageloader class to set the bitmap to imageview. Here is my imageloader class import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.util.Collections; import java.util.Map; import java.util.Stack; import java.util.WeakHashMap; import com.stellent.beerbro.Wall; import android.app.Activity; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.PorterDuff.Mode; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.RectF; import android.graphics.drawable.BitmapDrawable; import android.util.Log; import android.widget.ImageView; public class ImageLoader { MemoryCache memoryCache=new MemoryCache(); FileCache fileCache; private Map<ImageView, String> imageViews=Collections.synchronizedMap(new WeakHashMap<ImageView, String>()); public ImageLoader(Context context){ //Make the background thead low priority. This way it will not affect the UI performance photoLoaderThread.setPriority(Thread.NORM_PRIORITY-1); fileCache=new FileCache(context); } // final int stub_id=R.drawable.stub; public void DisplayImage(String url,ImageView imageView) { imageViews.put(imageView, url); System.gc(); // Bitmap bitmap=createScaledBitmap(memoryCache.get(url), 100,100,0); Bitmap bitmap=memoryCache.get(url); // Bitmap bitmaps=bitmap.createScaledBitmap(bitmap, 0, 100, 100); if(bitmap!=null) { imageView.setBackgroundDrawable(new BitmapDrawable(bitmap)); // imageView.setImageBitmap(getRoundedCornerBitmap( bitmap, 10,70,70)); // imageView.setImageBitmap(bitmap); // Log.v("first", "first"); } else { queuePhoto(url, imageView); // Log.v("second", "second"); } } private Bitmap createScaledBitmap(Bitmap bitmap, int i, int j, int k) { // TODO Auto-generated method stub return null; } private void queuePhoto(String url, ImageView imageView) { //This ImageView may be used for other images before. So there may be some old tasks in the queue. We need to discard them. photosQueue.Clean(imageView); PhotoToLoad p=new PhotoToLoad(url, imageView); synchronized(photosQueue.photosToLoad){ photosQueue.photosToLoad.push(p); photosQueue.photosToLoad.notifyAll(); } //start thread if it's not started yet if(photoLoaderThread.getState()==Thread.State.NEW) photoLoaderThread.start(); } public Bitmap getBitmap(String url) { File f=fileCache.getFile(url); //from SD cache Bitmap b = decodeFile(f); if(b!=null) return b; //from web try { Bitmap bitmap=null; URL imageUrl = new URL(url); HttpURLConnection conn = (HttpURLConnection)imageUrl.openConnection(); conn.setConnectTimeout(30000); conn.setReadTimeout(30000); InputStream is=conn.getInputStream(); OutputStream os = new FileOutputStream(f); Utils.CopyStream(is, os); os.close(); bitmap = decodeFile(f); return bitmap; } catch (Exception ex){ ex.printStackTrace(); return null; } }//Lalit //decodes image and scales it to reduce memory consumption private Bitmap decodeFile(File f){ try { //decode image size BitmapFactory.Options o = new BitmapFactory.Options(); o.inJustDecodeBounds = true; BitmapFactory.decodeStream(new FileInputStream(f),null,o); //Find the correct scale value. It should be the power of 2. final int REQUIRED_SIZE=Wall.width; final int REQUIRED_SIZE1=Wall.height; // final int REQUIRED_SIZE=250; // int width_tmp=o.outWidth, height_tmp=o.outHeight; int scale=1; // while(o.outWidth/scale/2>=REQUIRED_SIZE && o.outHeight/scale/2>=REQUIRED_SIZE) //// scale*=2; while(true){ if(width_tmp/2<REQUIRED_SIZE && height_tmp/2<REQUIRED_SIZE1) break; width_tmp/=2; height_tmp/=2; scale*=2; } //decode with inSampleSize BitmapFactory.Options o2 = new BitmapFactory.Options(); o2.inSampleSize=scale; // o2.inSampleSize=2; return BitmapFactory.decodeStream(new FileInputStream(f), null, o2); } catch (FileNotFoundException e) {} return null; } //Task for the queue private class PhotoToLoad { public String url; public ImageView imageView; public PhotoToLoad(String u, ImageView i){ url=u; imageView=i; } } PhotosQueue photosQueue=new PhotosQueue(); public void stopThread() { photoLoaderThread.interrupt(); } //stores list of photos to download class PhotosQueue { private Stack<PhotoToLoad> photosToLoad=new Stack<PhotoToLoad>(); //removes all instances of this ImageView public void Clean(ImageView image) { for(int j=0 ;j<photosToLoad.size();){ if(photosToLoad.get(j).imageView==image) photosToLoad.remove(j); else ++j; } } } class PhotosLoader extends Thread { public void run() { try { while(true) { //thread waits until there are any images to load in the queue if(photosQueue.photosToLoad.size()==0) synchronized(photosQueue.photosToLoad){ photosQueue.photosToLoad.wait(); } if(photosQueue.photosToLoad.size()!=0) { PhotoToLoad photoToLoad; synchronized(photosQueue.photosToLoad){ photoToLoad=photosQueue.photosToLoad.pop(); } Bitmap bmp=getBitmap(photoToLoad.url); memoryCache.put(photoToLoad.url, bmp); String tag=imageViews.get(photoToLoad.imageView); if(tag!=null && tag.equals(photoToLoad.url)){ BitmapDisplayer bd=new BitmapDisplayer(bmp, photoToLoad.imageView); Activity a=(Activity)photoToLoad.imageView.getContext(); a.runOnUiThread(bd); } } if(Thread.interrupted()) break; } } catch (InterruptedException e) { //allow thread to exit } } } PhotosLoader photoLoaderThread=new PhotosLoader(); //Used to display bitmap in the UI thread class BitmapDisplayer implements Runnable { Bitmap bitmap; ImageView imageView; public BitmapDisplayer(Bitmap b, ImageView i){bitmap=b;imageView=i;} public void run() { if(bitmap!=null) imageView.setBackgroundDrawable(new BitmapDrawable(bitmap)); } } public void clearCache() { memoryCache.clear(); fileCache.clear(); } public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels,int width,int height) { Bitmap output = Bitmap.createBitmap(width,height, Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); final RectF rectF = new RectF(rect); final float roundPx = pixels; paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); return output; } }

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  • Hibernate, Spring and SLF4J Binding

    - by asrijaal
    Hi, I'm trying to setup a webapp with maven2 managed dependcies. Here my pom.xml <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>mtx-production</groupId> <artifactId>mtx-production</artifactId> <version>0.0.1</version> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>3.0.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>3.0.2.RELEASE</version> <type>jar</type> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>3.0.2.RELEASE</version> <type>jar</type> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.12</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>3.5.1-Final</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-annotations</artifactId> <version>3.5.1-Final</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.5.8</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.14</version> <type>jar</type> <scope>compile</scope> </dependency> </dependencies> <repositories> <repository> <id>jboss-releases</id> <url>http://repository.jboss.org/maven2</url> </repository> </repositories> </project> Correct me if I got something wrong but this should work?! I only getting in my eclipse this exception 13.06.2010 16:48:15 org.springframework.context.support.AbstractApplicationContext$BeanPostProcessorChecker postProcessAfterInitialization INFO: Bean 'dataSource' is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. 13.06.2010 16:48:15 org.springframework.beans.factory.support.DefaultSingletonBeanRegistry destroySingletons INFO: Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@366573: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.beans.factory.config.PropertyPlaceholderConfigurer#0,dataSource,sessionFactory,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0,org.springframework.transaction.interceptor.TransactionInterceptor#0,org.springframework.transaction.config.internalTransactionAdvisor,myTxManager,org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0]; root of factory hierarchy 13.06.2010 16:48:15 org.springframework.web.context.ContextLoader initWebApplicationContext SCHWERWIEGEND: Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/slf4j/impl/StaticLoggerBinder at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:687) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:408) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3830) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4337) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/slf4j/impl/StaticLoggerBinder at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1412) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:387) at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:266) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.detectPersistenceExceptionTranslators(PersistenceExceptionTranslationInterceptor.java:139) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.<init>(PersistenceExceptionTranslationInterceptor.java:79) at org.springframework.dao.annotation.PersistenceExceptionTranslationAdvisor.<init>(PersistenceExceptionTranslationAdvisor.java:70) at org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor.setBeanFactory(PersistenceExceptionTranslationPostProcessor.java:99) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1431) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1400) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) ... 25 more Caused by: java.lang.NoClassDefFoundError: org/slf4j/impl/StaticLoggerBinder What is wrong with my setup?

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  • Gson Deserialize to Java Tree

    - by MountainX
    I need to deserialize some JSON to a Java tree structure that contains TreeNodes and NodeData. TreeNodes are thin wrappers around NodeData. I'll provide the JSON and the classes below. I have looked at the usual Gson help sources, including here, but I can't seem to come up with the solution. Serialization works fine with Gson. The JSON below was produced by Gson. But deserialization is the problem I need help with. Can someone show me how to write the deserializer (or suggest an alternative approach using Gson best practices)? Here is my JSON. The "data" element corresponds to class NodeData, and the "subList" JSON element corresponds to Java class TreeNode. { "data": { "version": "032", "name": "root", "path": "/", "id": "1", "parentId": "0", "toolTipText": "rootNode" }, "subList": [ { "data": { "version": "032", "name": "level1", "labelText": "Some Label Text at Level1", "path": "/root", "id": "2", "parentId": "1", "toolTipText": "a tool tip for level1" }, "subList": [ { "data": { "version": "032", "name": "level1_1", "labelText": "Label level1_1", "path": "/root/level1", "id": "3", "parentId": "2", "toolTipText": "ToolTipText for level1_1" } }, { "data": { "version": "032", "name": "level1_2", "labelText": "Label level1_2", "path": "/root/level1", "id": "4", "parentId": "2", "toolTipText": "ToolTipText for level1_2" } } ] }, { "data": { "version": "032", "name": "level2", "path": "/root", "id": "5", "parentId": "1", "toolTipText": "ToolTipText for level2" }, "subList": [ { "data": { "version": "032", "name": "level2_1", "labelText": "Label level2_1", "path": "/root/level2", "id": "6", "parentId": "5", "toolTipText": "ToolTipText for level2_1" }, "subList": [ { "data": { "version": "032", "name": "level2_1_1", "labelText": "Label level2_1_1", "path": "/root/level2/level2_1", "id": "7", "parentId": "6", "toolTipText": "ToolTipText for level2_1_1" } } ] } ] } ] } Here are the Java classes: public class Tree { private TreeNode rootElement; private HashMap<String, TreeNode> indexById; private HashMap<String, TreeNode> indexByKey; private long nextAvailableID = 0; public Tree() { indexById = new HashMap<String, TreeNode>(); indexByKey = new HashMap<String, TreeNode>(); } public long getNextAvailableID() { return this.nextAvailableID; } ... [snip] ... } public class TreeNode { private Tree tree; private NodeData data; public List<TreeNode> subList; private HashMap<String, TreeNode> indexById; private HashMap<String, TreeNode> indexByKey; //this default ctor is used only for Gson deserialization public TreeNode() { this.tree = new Tree(); indexById = tree.getIdIndex(); indexByKey = tree.getKeyIndex(); this.makeRoot(); tree.setRootElement(this); } //makes this node the root node. Calling this obviously has side effects. public NodeData makeRoot() { NodeData rootProp = new NodeData(TreeFactory.version, "example", "rootNode"); String nextAvailableID = getNextAvailableID(); if (!nextAvailableID.equals("1")) { throw new IllegalStateException(); } rootProp.setId(nextAvailableID); rootProp.setParentId("0"); rootProp.setKeyPathOnly("/"); rootProp.setSchema(tree); this.data = rootProp; rootProp.setNode(this); indexById.put(rootProp.getId(), this); indexByKey.put(rootProp.getKeyFullName(), this); return rootProp; } ... [snip] ... } public class NodeData { protected static Tree tree; private LinkedHashMap<String, String> keyValMap; protected String version; protected String name; protected String labelText; protected String path; protected String id; protected String parentId; protected TreeNode node; protected String toolTipText;//tool tip or help string protected String imagePath;//for things like images; not persisted to properties protected static final String delimiter = "/"; //this default ctor is used only for Gson deserialization public NodeData() { this("NOT_SET", "NOT_SET", "NOT_SET"); } ... [snip] ... } Side note: The tree data structure is a bit strange, as it includes indexes. Obviously, this isn't a typical search tree. In fact, the tree is used mainly to create a hierarchical path element (String) in each NodeData element. (Example: "path": "/root/level2/level2_1".) The indexes are actually used for NodeData retrieval.

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  • How do I do event handling in php with html?

    - by TheAmazingKnight
    I am constructing a simple quiz using html and php. The problem I'm having is that I'm not sure how to do event handlers since it's my first time doing php. Simply, the user click on Take Quiz and it brings up the quiz, then submit the quiz using the same page and show score results. The quiz was written in HTML as shown below: HTML CODE: <section> <h1 id="theme"><span class="initial">Q</span>uiz</h1> <div id="message">Why not go ahead and take the quiz to test your knowledge based on what you've learned in Smartphone Photography. There are only 5 questions surrounding the content of this site. Good Luck! :) <br/> <button type="button" name="name" onclick="takeQuiz()">Take Quiz!</button> </div> </section> </div> <form action="grade.php" method="post" id="quiz"> <!--Question 1--> <h3>1. How many percent of modern camera phones use CMOS?</h3> <div> <input type="radio" name="question-1-answers" id="question-1-answers-A" value="A" /> <label for="question-1-answers-A">A) 20%</label> <br/> <input type="radio" name="question-1-answers" id="question-1-answers-B" value="B" /> <label for="question-1-answers-B">B) 80%</label> <br/> <input type="radio" name="question-1-answers" id="question-1-answers-C" value="C" /> <label for="question-1-answers-C">C) 50%</label> <br/> <input type="radio" name="question-1-answers" id="question-1-answers-D" value="D" /> <label for="question-1-answers-D">D) 90%</label> </div> <!--Question 2--> <h3>2. Which type of camera setting(s) is best for greater control and flexibility in terms of focusing on a subject?</h3> <div> <input type="radio" name="question-2-answers" id="question-2-answers-A" value="A" /> <label for="question-2-answers-A">A) Manual Focus</label> <br/> <input type="radio" name="question-2-answers" id="question-2-answers-B" value="B" /> <label for="question-2-answers-B">B) Auto Focus</label> <br/> <input type="radio" name="question-2-answers" id="question-2-answers-C" value="C" /> <label for="question-2-answers-C">C) Both A and B</label> <br/> <input type="radio" name="question-2-answers" id="question-2-answers-D" value="D" /> <label for="question-2-answers-D">D) Neither</label> </div> <!--Question 3--> <h3>3. What are the three properties included in an exposure triangle?</h3> <div> <input type="radio" name="question-3-answers" id="question-3-answers-A" value="A" /> <label for="question-3-answers-A">A) White Balance, ISO, Low Light</label> <br/> <input type="radio" name="question-3-answers" id="question-3-answers-B" value="B" /> <label for="question-3-answers-B">B) Shutter Speed, Exposure, ISO</label> <br/> <input type="radio" name="question-3-answers" id="question-3-answers-C" value="C" /> <label for="question-3-answers-C">C) Aperture, ISO, Exposure</label> <br/> <input type="radio" name="question-3-answers" id="question-3-answers-D" value="D" /> <label for="question-3-answers-D">D) ISO, Aperture, Shutter Speed</label> </div> <!--Question 4--> <h3>4. The higher the ISO, the more noise it produces in an image.</h3> <div> <input type="radio" name="question-4-answers" id="question-4-answers-A" value="A" /> <label for="question-4-answers-A">A) True</label> <br/> <input type="radio" name="question-4-answers" id="question-4-answers-B" value="B" /> <label for="question-4-answers-B">B) False</label> </div> <!--Question 5--> <h3>5. What is the name of the smartphone you've seen all over this site?</h3> <div> <input type="radio" name="question-5-answers" id="question-5-answers-A" value="A" /> <label for="question-5-answers-A">A) Nokia Pureview 808</label> <br/> <input type="radio" name="question-5-answers" id="question-5-answers-B" value="B" /> <label for="question-5-answers-B">B) Nokia Lumia 1020</label> <br/> <input type="radio" name="question-5-answers" id="question-5-answers-C" value="C" /> <label for="question-5-answers-C">C) Nokia Lumia 925</label> <br/> <input type="radio" name="question-5-answers" id="question-5-answers-D" value="D" /> <label for="question-5-answers-D">D) Nokia Lumia 920</label> </div> <input type="submit" value="Submit Quiz" /> </form> Then I have a php file named grade.php which will print the results of the quiz grade. PHP CODE: <?php // create variables linking the questions' answers from the form $answer1 = $_POST['question-1-answers']; $answer2 = $_POST['question-2-answers']; $answer3 = $_POST['question-3-answers']; $answer4 = $_POST['question-4-answers']; $answer5 = $_POST['question-5-answers']; $totalCorrect = 0; // Set up if-statements and determine the correct answers to be POSTed if($answer1 == "D") { $totalCorrect++; } if($answer2 == "A") { $totalCorrect++; } if($answer3 == "D") { $totalCorrect++; } if($answer4 == "A") { $totalCorrect++; } if($answer5 == "B") { $totalCorrect++; } //display the results echo "<div id='results'>$totalCorrect / 5 correct</div>"; ?>

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  • How to set the skin of a DotNetNuke page through code?

    - by ks78
    I'm working on a DNN module that creates DNN pages (tabs) and places DNN modules on them through code. So, far that's working very well. However, I'd like it to also be able to programmatically set the page's skin and place the modules in the appropriate pane. Does anyone know how to do this using code? Solution: I set SkinSrc and ContainerSrc as mika suggested. Here's my source, if you're interested. This is where I set SkinSrc. ''' <summary>Create new DNN tab/page.</summary> Private Function CreatePage(ByVal ParentID As Integer, ByVal PageName As String, ByVal PageTitle As String, ByVal Description As String, ByVal Keywords As String, ByVal Permissions As TabPermissionCollection, Optional ByVal SkinSrc As String = "", Optional ByVal isVisible As Boolean = True, Optional ByVal LoadDefaultModules As Boolean = True) As Tabs.TabInfo Try Dim tabCtrlr As New TabController Dim newTab As New Tabs.TabInfo Dim newPermissions As TabPermissionCollection = newTab.TabPermissions Dim permissionProvider As PermissionProvider = permissionProvider.Instance Dim infPermission As TabPermissionInfo ' set new page properties newTab.PortalID = PortalId newTab.TabName = PageName newTab.Title = PageTitle newTab.Description = Description newTab.KeyWords = Keywords newTab.IsDeleted = False newTab.IsSuperTab = False newTab.IsVisible = isVisible newTab.DisableLink = False newTab.IconFile = "" newTab.Url = "" newTab.ParentId = ParentID 'add skinsrc if specified If (SkinSrc.Length > 0) Then newTab.SkinSrc = SkinSrc ' create new page tabCtrlr.AddTab(newTab, LoadDefaultModules) ' copy permissions selected in Permissions collection For index As Integer = 0 To (Permissions.Count - 1) infPermission = New TabPermissionInfo infPermission.AllowAccess = Permissions(index).AllowAccess infPermission.RoleID = Permissions(index).RoleID infPermission.RoleName = Permissions(index).RoleName infPermission.TabID = Permissions(index).TabID infPermission.PermissionID = Permissions(index).PermissionID 'save permission info newPermissions.Add(infPermission, True) permissionProvider.SaveTabPermissions(newTab) Next index 'return TabInfo of new page Return newTab Catch ex As Exception 'failure Return New Tabs.TabInfo End Try End Function These next two functions were taken from the DNN source and tweaked slightly, so I can't take credit for much of them. Also, if you use these in your own modules there could be issues when upgrading DNN. Although the upgrade from 5.05 to 5.06 went smoothly for me. In the AddNewModule function, I used ContainerSrc to specify the custom container to use. PaneName is the property used to specify which panel the module should be placed in. #Region "From DNN Source --mostly" #Region "Enums" Private Enum ViewPermissionType View = 0 Edit = 1 End Enum #End Region ''' ----------------------------------------------------------------------------- ''' <summary>Adds a New Module to a Pane</summary> ''' <param name="align">The alignment for the Module</param> ''' <param name="desktopModuleId">The Id of the DesktopModule</param> ''' <param name="permissionType">The View Permission Type for the Module</param> ''' <param name="title">The Title for the resulting module</param> ''' <param name="paneName">The pane to add the module to</param> ''' <param name="position">The relative position within the pane for the module</param> ''' ----------------------------------------------------------------------------- Private Function AddNewModule(ByVal TabID As Integer, ByVal title As String, ByVal desktopModuleId As Integer, ByVal paneName As String, ByVal position As Integer, ByVal permissionType As ViewPermissionType, ByVal align As String) As Integer Dim objTabController As New TabController Dim objTabPermissions As TabPermissionCollection = objTabController.GetTab(TabID, PortalId, True).TabPermissions Dim objPermissionController As New PermissionController Dim objModules As New ModuleController Dim objModuleDefinition As ModuleDefinitionInfo Dim objEventLog As New Services.Log.EventLog.EventLogController Dim newModuleID As Integer Dim j As Integer Try Dim desktopModule As DesktopModuleInfo = Nothing If Not DesktopModuleController.GetDesktopModules(PortalSettings.PortalId).TryGetValue(desktopModuleId, desktopModule) Then Throw New ArgumentException("desktopModuleId") End If Catch ex As Exception LogException(ex) End Try Dim UserId As Integer = -1 If Request.IsAuthenticated Then Dim objUserInfo As Users.UserInfo = UserController.GetCurrentUserInfo UserId = objUserInfo.UserID End If For Each objModuleDefinition In ModuleDefinitionController.GetModuleDefinitionsByDesktopModuleID(desktopModuleId).Values Dim objModule As New ModuleInfo objModule.Initialize(PortalSettings.PortalId) objModule.PortalID = PortalSettings.PortalId objModule.TabID = TabID objModule.ModuleOrder = position If title = "" Then objModule.ModuleTitle = objModuleDefinition.FriendlyName Else objModule.ModuleTitle = title End If objModule.PaneName = paneName objModule.ModuleDefID = objModuleDefinition.ModuleDefID If objModuleDefinition.DefaultCacheTime > 0 Then objModule.CacheTime = objModuleDefinition.DefaultCacheTime If Portals.PortalSettings.Current.DefaultModuleId > Null.NullInteger AndAlso Portals.PortalSettings.Current.DefaultTabId > Null.NullInteger Then Dim defaultModule As ModuleInfo = objModules.GetModule(Portals.PortalSettings.Current.DefaultModuleId, Portals.PortalSettings.Current.DefaultTabId, True) If Not defaultModule Is Nothing Then objModule.CacheTime = defaultModule.CacheTime End If End If End If Select Case permissionType Case ViewPermissionType.View objModule.InheritViewPermissions = True Case ViewPermissionType.Edit objModule.InheritViewPermissions = False End Select ' get the default module view permissions Dim arrSystemModuleViewPermissions As ArrayList = objPermissionController.GetPermissionByCodeAndKey("SYSTEM_MODULE_DEFINITION", "VIEW") ' get the permissions from the page For Each objTabPermission As TabPermissionInfo In objTabPermissions If objTabPermission.PermissionKey = "VIEW" AndAlso permissionType = ViewPermissionType.View Then 'Don't need to explicitly add View permisisons if "Same As Page" Continue For End If ' get the system module permissions for the permissionkey Dim arrSystemModulePermissions As ArrayList = objPermissionController.GetPermissionByCodeAndKey("SYSTEM_MODULE_DEFINITION", objTabPermission.PermissionKey) ' loop through the system module permissions For j = 0 To arrSystemModulePermissions.Count - 1 ' create the module permission Dim objSystemModulePermission As PermissionInfo objSystemModulePermission = CType(arrSystemModulePermissions(j), PermissionInfo) If objSystemModulePermission.PermissionKey = "VIEW" AndAlso permissionType = ViewPermissionType.Edit AndAlso _ objTabPermission.PermissionKey <> "EDIT" Then 'Only Page Editors get View permissions if "Page Editors Only" Continue For End If Dim objModulePermission As ModulePermissionInfo = AddModulePermission(objModule, _ objSystemModulePermission, _ objTabPermission.RoleID, objTabPermission.UserID, _ objTabPermission.AllowAccess) ' ensure that every EDIT permission which allows access also provides VIEW permission If objModulePermission.PermissionKey = "EDIT" And objModulePermission.AllowAccess Then Dim objModuleViewperm As ModulePermissionInfo = AddModulePermission(objModule, _ CType(arrSystemModuleViewPermissions(0), PermissionInfo), _ objModulePermission.RoleID, objModulePermission.UserID, _ True) End If Next 'Get the custom Module Permissions, Assume that roles with Edit Tab Permissions 'are automatically assigned to the Custom Module Permissions If objTabPermission.PermissionKey = "EDIT" Then Dim arrCustomModulePermissions As ArrayList = objPermissionController.GetPermissionsByModuleDefID(objModule.ModuleDefID) ' loop through the custom module permissions For j = 0 To arrCustomModulePermissions.Count - 1 ' create the module permission Dim objCustomModulePermission As PermissionInfo objCustomModulePermission = CType(arrCustomModulePermissions(j), PermissionInfo) AddModulePermission(objModule, objCustomModulePermission, _ objTabPermission.RoleID, objTabPermission.UserID, _ objTabPermission.AllowAccess) Next End If Next objModule.AllTabs = False objModule.Alignment = align 'apply Custom Container to module objModule.ContainerSrc = CONTAINER_TRANSPARENT_PLAIN newModuleID = objModules.AddModule(objModule) Next Return newModuleID End Function ''' ----------------------------------------------------------------------------- ''' <summary>Adds a Module Permission</summary> ''' <param name="permission">The permission to add</param> ''' <param name="roleId">The Id of the role to add the permission for.</param> ''' ----------------------------------------------------------------------------- Private Function AddModulePermission(ByVal objModule As ModuleInfo, ByVal permission As PermissionInfo, ByVal roleId As Integer, ByVal userId As Integer, ByVal allowAccess As Boolean) As ModulePermissionInfo Dim objModulePermission As New ModulePermissionInfo objModulePermission.ModuleID = objModule.ModuleID objModulePermission.PermissionID = permission.PermissionID objModulePermission.RoleID = roleId objModulePermission.UserID = userId objModulePermission.PermissionKey = permission.PermissionKey objModulePermission.AllowAccess = allowAccess ' add the permission to the collection If Not objModule.ModulePermissions.Contains(objModulePermission) Then objModule.ModulePermissions.Add(objModulePermission) End If Return objModulePermission End Function #End Region

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  • MVVM - implementing 'IsDirty' functionality to a ModelView in order to save data

    - by Brendan
    Hi, Being new to WPF & MVVM I struggling with some basic functionality. Let me first explain what I am after, and then attach some example code... I have a screen showing a list of users, and I display the details of the selected user on the right-hand side with editable textboxes. I then have a Save button which is DataBound, but I would only like this button to display when data has actually changed. ie - I need to check for "dirty data". I have a fully MVVM example in which I have a Model called User: namespace Test.Model { class User { public string UserName { get; set; } public string Surname { get; set; } public string Firstname { get; set; } } } Then, the ViewModel looks like this: using System.Collections.ObjectModel; using System.Collections.Specialized; using System.Windows.Input; using Test.Model; namespace Test.ViewModel { class UserViewModel : ViewModelBase { //Private variables private ObservableCollection<User> _users; RelayCommand _userSave; //Properties public ObservableCollection<User> User { get { if (_users == null) { _users = new ObservableCollection<User>(); //I assume I need this Handler, but I am stuggling to implement it successfully //_users.CollectionChanged += HandleChange; //Populate with users _users.Add(new User {UserName = "Bob", Firstname="Bob", Surname="Smith"}); _users.Add(new User {UserName = "Smob", Firstname="John", Surname="Davy"}); } return _users; } } //Not sure what to do with this?!?! //private void HandleChange(object sender, NotifyCollectionChangedEventArgs e) //{ // if (e.Action == NotifyCollectionChangedAction.Remove) // { // foreach (TestViewModel item in e.NewItems) // { // //Removed items // } // } // else if (e.Action == NotifyCollectionChangedAction.Add) // { // foreach (TestViewModel item in e.NewItems) // { // //Added items // } // } //} //Commands public ICommand UserSave { get { if (_userSave == null) { _userSave = new RelayCommand(param => this.UserSaveExecute(), param => this.UserSaveCanExecute); } return _userSave; } } void UserSaveExecute() { //Here I will call my DataAccess to actually save the data } bool UserSaveCanExecute { get { //This is where I would like to know whether the currently selected item has been edited and is thus "dirty" return false; } } //constructor public UserViewModel() { } } } The "RelayCommand" is just a simple wrapper class, as is the "ViewModelBase". (I'll attach the latter though just for clarity) using System; using System.ComponentModel; namespace Test.ViewModel { public abstract class ViewModelBase : INotifyPropertyChanged, IDisposable { protected ViewModelBase() { } public event PropertyChangedEventHandler PropertyChanged; protected virtual void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = this.PropertyChanged; if (handler != null) { var e = new PropertyChangedEventArgs(propertyName); handler(this, e); } } public void Dispose() { this.OnDispose(); } protected virtual void OnDispose() { } } } Finally - the XAML <Window x:Class="Test.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:vm="clr-namespace:Test.ViewModel" Title="MainWindow" Height="350" Width="525"> <Window.DataContext> <vm:UserViewModel/> </Window.DataContext> <Grid> <ListBox Height="238" HorizontalAlignment="Left" Margin="12,12,0,0" Name="listBox1" VerticalAlignment="Top" Width="197" ItemsSource="{Binding Path=User}" IsSynchronizedWithCurrentItem="True"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel> <TextBlock Text="{Binding Path=Firstname}"/> <TextBlock Text="{Binding Path=Surname}"/> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> <Label Content="Username" Height="28" HorizontalAlignment="Left" Margin="232,16,0,0" Name="label1" VerticalAlignment="Top" /> <TextBox Height="23" HorizontalAlignment="Left" Margin="323,21,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" Text="{Binding Path=User/UserName}" /> <Label Content="Surname" Height="28" HorizontalAlignment="Left" Margin="232,50,0,0" Name="label2" VerticalAlignment="Top" /> <TextBox Height="23" HorizontalAlignment="Left" Margin="323,52,0,0" Name="textBox2" VerticalAlignment="Top" Width="120" Text="{Binding Path=User/Surname}" /> <Label Content="Firstname" Height="28" HorizontalAlignment="Left" Margin="232,84,0,0" Name="label3" VerticalAlignment="Top" /> <TextBox Height="23" HorizontalAlignment="Left" Margin="323,86,0,0" Name="textBox3" VerticalAlignment="Top" Width="120" Text="{Binding Path=User/Firstname}" /> <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="368,159,0,0" Name="button1" VerticalAlignment="Top" Width="75" Command="{Binding Path=UserSave}" /> </Grid> </Window> So basically, when I edit a surname, the Save button should be enabled; and if I undo my edit - well then it should be Disabled again as nothing has changed. I have seen this in many examples, but have not yet found out how to do it. Any help would be much appreciated! Brendan

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  • ASP.NET with jQueryUI: text box value is getting as null in Button click event

    - by Shyju
    I have an ASP.NET page where I have a button When a user clicks on the button,I will check whether the user has logged in or not.If not logged in I will show a modal popup to login (using jQueryUI). I have placed one textbox(txtPassword) and one button(btnLogin) control in the Div which will be shown by the jQueryDialog.But in btnLogin's Click event, I am not able to read the Text value entered in the textbox txtPassword The below is my code <form id="form1" runat="server"> <div> <br /> <asp:TextBox ID="txtModelId" runat="server" Text=""></asp:TextBox><br /> <asp:Button ID="btnGo" runat="server" Text="Go" OnClick="btnGo_Click" /> <br /> <asp:Label ID="lblUserMsg" runat="server" Text="Label"></asp:Label></div> <div id="divContentHolder"> <div class="demo"> <div id="dialog" title="Login with your TradeIn Account"> <p id="validateTips">Enter your EmailId & password</p> <fieldset> <label for="email">Email</label> <asp:TextBox ID="txtEmail" CssClass="text ui-widget-content ui-corner-all" runat="server" ></asp:TextBox> <label for="password"> <asp:TextBox ID="TextBox1" runat="server" Text="sample"></asp:TextBox>Password</label> <asp:TextBox ID="txtPassword" CssClass="text ui-widget-content ui-corner-all" runat="server" ></asp:TextBox> <asp:Button ID="btnLogin" runat="server" Text="Login" OnClick="btnLogin_Click" UseSubmitBehavior="false"/> </fieldset> </div><!--dialog--> </div><!--demo--> </div><!--divContentHolder--> </form> Server side Code protected void btnGo_Click(object sender, EventArgs e) { CheckUserLoggedIn(); } private void CheckUserLoggedIn() { if (Session["username"] != null) { Response.Write("Logged in user"); ClientScript.RegisterHiddenField("isAuthenticated", "true"); } else { ClientScript.RegisterHiddenField("isAuthenticated", "false"); } } protected void btnLogin_Click(object sender, EventArgs e) { string txtSample= TextBox1.Text; // this is showing the value 'sample' string txtPass= txtPassword.Text; // this is showing null if (txtPass == "shyju") { Session["username"] = txtPassword.Text; Response.Redirect("TestingModal.aspx"); } } My java script code to render the dialog $(function() { var name = $("#name"), email = $("#email"), password = $("#password"), allFields = $([]).add(name).add(email).add(password), tips = $("#validateTips"); function updateTips(t) { tips.text(t).effect("highlight",{},1500); } function checkLength(o,n,min,max) { if ( o.val().length > max || o.val().length < min ) { o.addClass('ui-state-error'); updateTips("Length of " + n + " must be between "+min+" and "+max+"."); return false; } else { return true; } } function checkRegexp(o,regexp,n) { if ( !( regexp.test( o.val() ) ) ) { o.addClass('ui-state-error'); updateTips(n); return false; } else { return true; } } $("#dialog").dialog({ bgiframe: true, autoOpen: false, height: 300, modal: true, buttons: { 'Create an account': function() { var bValid = true; allFields.removeClass('ui-state-error'); bValid=true; if (bValid) { /*$('#users tbody').append('<tr>' + '<td>' + name.val() + '</td>' + '<td>' + email.val() + '</td>' + '<td>' + password.val() + '</td>' + '</tr>'); */ alert("Check User Credentials") $(this).dialog('close'); } }, Cancel: function() { $(this).dialog('close'); } }, close: function() { allFields.val('').removeClass('ui-state-error'); } }); $('#create-user').click(function() { $('#dialog').dialog('open'); }) .hover( function(){ $(this).addClass("ui-state-hover"); }, function(){ $(this).removeClass("ui-state-hover"); } ).mousedown(function(){ $(this).addClass("ui-state-active"); }) .mouseup(function(){ $(this).removeClass("ui-state-active"); }); var isAuthenticated = $("#isAuthenticated").val(); if (isAuthenticated && isAuthenticated == "false") { // Display the modal dialog. $("#dialog").dialog("open"); } }); I had hard coded the text properties value of TextBox1 as 'sample' in the HTML part of my ASPX file .In button click event i am getting it.But the other textbox,txtPassword 's Text property is giving me null value Please guide me to go ahead Thanks in advance

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  • jsf flash.keep and redirects does not seem to work

    - by user384706
    Hi, I am trying to use JSF 2.0 flash via redirects. I have a class named UserBean (ManagedScoped and RequestScoped). It has a method called getValuesFromFlash which essentially gets the values from the flash and sets the coresponding properties of the UserBean public void getValuesFromFlash() { Flash flash = FacesContext.getCurrentInstance().getExternalContext().getFlash(); firstName= (String) flash.get("firstName"); lastName = (String) flash.get("lastName"); } In the entry page the <h:inputText> are bound to the flash. Snippet follows: Entry.xhtml <h:form> <table> <tr> <td>First Name:</td> <td> <h:inputText id="fname" value="#{flash.firstName}" required="true"/> <h:message for="fname" /> </td> </tr> <tr> <td>Last Name:</td> <td> <h:inputText id="lname" value="#{flash.lastName}" required="true"/> <h:message for="lname" /> </td> </tr> </table <p><h:commandButton value="Submit" action="confirmation?faces-redirect=true" /></p> </h:form> In confirmation.xhtml these values are supposed to be displayed but they are not. Snippet follows: <table> <tr> <td>First Name:</td> <td> <h:outputText value="#{flash.keep.firstName}" /> </td> </tr> <tr> <td>Last Name:</td> <td> <h:outputText value="#{flash.keep.lastName}"/> </td> </tr> </table> <h:form> <p><h:commandButton value="Confirm" action="finished?faces-redirect=true" /></p> </h:form> In finished.xhtml I want all these to be displayed so: <h:body> <h:form> #{userBean.getValuesFromFlash( )} <table> <tr> <td>First Name:</td> <td> <h:outputText value="#{userBean.firstName}" /> </td> </tr> <tr> <td>Last Name:</td> <td> <h:outputText value="#{userBean.lastName}"/> </td> </tr> </table> </h:form> </h:body> Instead when I get redirected to confirmation.xhtml neither first nor last name is displayed, despite I used flash.keep Also in finished.xhtml I get org.apache.el.parser.ParseException: Encountered " "(" "( "" at line 1, column 30. Was expecting one of: "}" ... "." If I remove the parenthesis from the expression #{userBean.getValuesFromFlash( )} and make it = #{userBean.getValuesFromFlash} javax.el.ELException: /done.xhtml: Property 'getValuesFromFlash' not found on type com.UserBean But why no property??It is a method! Why is the method not visible? What I am doing wrong here please? I am using JSF2.0 (MyFaces), Eclipse Helios and Tomcat 6 (Have also tried in Tomcat 7 but no luck). Any help is appreciated. Thanks!

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  • Integrate openid4java to GWT Project

    - by Slyker
    Hi, I created an GWT project in eclipse. Now I tried to implement openId with using the openid4java library. I imported the .jar files via properties--java build path: openid4java-0.9.5.jar lib/*.jar In addition I copied the .jar files into the war/WEB-INF/lib directory. The problem at hand comes up when I call the authenticate() method. Then I get a: HTTP ERROR 500 Problem accessing /openid/openid. Reason: access denied (java.lang.RuntimePermission modifyThreadGroup)Caused by:java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThreadGroup) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:166) at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkAccess(DevAppServerFactory.java:191) at java.lang.ThreadGroup.checkAccess(Unknown Source) at java.lang.Thread.init(Unknown Source) at java.lang.Thread.<init>(Unknown Source) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ReferenceQueueThread.<init>(MultiThreadedHttpConnectionManager.java:1039) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.storeReferenceToConnection(MultiThreadedHttpConnectionManager.java:164) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.access$900(MultiThreadedHttpConnectionManager.java:64) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ConnectionPool.createConnection(MultiThreadedHttpConnectionManager.java:750) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.doGetConnection(MultiThreadedHttpConnectionManager.java:469) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.getConnectionWithTimeout(MultiThreadedHttpConnectionManager.java:394) at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:152) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:324) at org.openid4java.util.HttpCache.head(HttpCache.java:296) at org.openid4java.discovery.yadis.YadisResolver.retrieveXrdsLocation(YadisResolver.java:360) at org.openid4java.discovery.yadis.YadisResolver.discover(YadisResolver.java:229) at org.openid4java.discovery.yadis.YadisResolver.discover(YadisResolver.java:221) at org.openid4java.discovery.yadis.YadisResolver.discover(YadisResolver.java:179) at org.openid4java.discovery.Discovery.discover(Discovery.java:134) at org.openid4java.discovery.Discovery.discover(Discovery.java:114) at org.openid4java.consumer.ConsumerManager.discover(ConsumerManager.java:527) at auth.openid.server.OpenIDServlet.authenticate(OpenIDServlet.java:138) at auth.openid.server.OpenIDServlet.doGet(OpenIDServlet.java:101) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166) at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:51) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:70) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:349) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) Here my servlet source: import com.google.gwt.user.client.rpc.RemoteService; import org.openid4java.OpenIDException; import org.openid4java.consumer.ConsumerException; import org.openid4java.consumer.ConsumerManager; import org.openid4java.consumer.VerificationResult; import org.openid4java.discovery.DiscoveryInformation; import org.openid4java.discovery.Identifier; import org.openid4java.message.AuthRequest; import org.openid4java.message.ParameterList; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.text.MessageFormat; import java.util.List; public final class OpenIDServlet extends HttpServlet implements RemoteService { private final ConsumerManager manager; public OpenIDServlet() { try { manager = new ConsumerManager(); } catch (ConsumerException e) { throw new RuntimeException("Error creating consumer manager", e); } } ... private void authenticate(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { final String loginString = request.getParameter(nameParameter); try { // perform discovery on the user-supplied identifier List discoveries = manager.discover(loginString); // attempt to associate with the OpenID provider // and retrieve one service endpoint for authentication DiscoveryInformation discovered = manager.associate(discoveries); // obtain a AuthRequest message to be sent to the OpenID provider AuthRequest authReq = manager.authenticate(discovered, "openid", null); // redirect to OpenID for authentication response.sendRedirect(authReq.getDestinationUrl(true)); } catch (OpenIDException e) { throw new ServletException("Login string probably caused an error. loginString = " + loginString, e); } } My question now is: What could be my fault? Did I make any mistakes in importing the openid4java library? (which?) All other methods in the servlet which do not use the openid4java implementation work fine. Thanks, Andreas

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  • Ant build classpath jar generates "error in opening zip file"

    - by Uberpuppy
    I have a project built in eclipse with a dependencies on 3rd party jars. I'm trying to generate a suitable build file for ant - using eclipses built-in export-ant buildfile feature as a starting block. When I run the build target I get the following error: [javac] error: error reading /base/repo/FabTrace/lib/apache/geronimo/specs/geronimo-j2ee-management_1.0_spec/1.0/geronimo-j2ee-management_1.0_spec-1.0.jar; error in opening zip file And the whole build file (auto-generated by eclipse) looks like this: (NB: the error above always references the first jar listed in the classpath) <project basedir="." default="build" name="FabTrace"> <property environment="env"/> <property name="ECLIPSE_HOME" value="/opt/apps/eclipse"/> <property name="debuglevel" value="source,lines,vars"/> <property name="target" value="1.5"/> <property name="source" value="1.5"/> <path id="JUnit 4.libraryclasspath"> <pathelement location="${ECLIPSE_HOME}/plugins/org.junit4_4.5.0.v20090824/junit.jar"/> <pathelement location="${ECLIPSE_HOME}/plugins/org.hamcrest.core_1.1.0.v20090501071000.jar"/> </path> <path id="FabTrace.classpath"> <pathelement location="bin"/> <pathelement location="lib/apache/geronimo/specs/geronimo-j2ee-management_1.0_spec/1.0/geronimo-j2ee-management_1.0_spec-1.0.jar"/> <pathelement location="lib/apache/geronimo/specs/geronimo-jms_1.1_spec/1.0/geronimo-jms_1.1_spec-1.0.jar"/> <pathelement location="lib/commons-collections/commons-collections/3.2/commons-collections-3.2.jar"/> <pathelement location="lib/commons-io/commons-io/1.4/commons-io-1.4.jar"/> <pathelement location="lib/commons-lang/commons-lang/2.1/commons-lang-2.1.jar"/> <pathelement location="lib/commons-logging/commons-logging/1.1/commons-logging-1.1.jar"/> <pathelement location="lib/commons-logging/commons-logging-api/1.1/commons-logging-api-1.1.jar"/> <pathelement location="lib/javax/activation/activation/1.1/activation-1.1.jar"/> <pathelement location="lib/javax/jms/jms/1.1/jms-1.1.jar"/> <pathelement location="lib/javax/mail/mail/1.4/mail-1.4.jar"/> <pathelement location="lib/javax/xml/bind/jaxb-api/2.1/jaxb-api-2.1.jar"/> <pathelement location="lib/javax/xml/stream/stax-api/1.0-2/stax-api-1.0-2.jar"/> <pathelement location="lib/junit/junit/4.4/junit-4.4.jar"/> <pathelement location="lib/log4j/log4j/1.2.15/log4j-1.2.15.jar"/> <pathelement location="lib/apache/camel/camel-jms-2.0-M1.jar"/> <pathelement location="lib/spring/spring-2.5.6.jar"/> <pathelement location="lib/apache/camel/camel-bundle-2.0-M1.jar"/> <pathelement location="lib/backport-util-concurrent/backport-util-concurrent-3.1.jar"/> <pathelement location="lib/commons-pool/commons-pool-1.4.jar"/> <pathelement location="lib/apache/camel/camel-activemq-1.1.0.jar"/> <pathelement location="lib/apache/activemq/activemq-camel-5.2.0.jar"/> <pathelement location="lib/jencks/jencks-2.2-all.jar"/> <pathelement location="lib/jencks/jencks-amqpool-2.2.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/activemq-all-5.3.1.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/xbean-spring-3.6.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/activemq-core-5.3.1.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/camel-jetty-2.2.0.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/web/jetty-6.1.9.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/web/jetty-util-6.1.9.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/web/jetty-xbean-6.1.9.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/activemq-optional-5.3.1.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/web/geronimo-servlet_2.5_spec-1.2.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/spring-beans-2.5.6.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/spring-context-2.5.6.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/spring-core-2.5.6.jar"/> <path refid="JUnit 4.libraryclasspath"/> </path> <target name="init"> <mkdir dir="bin"/> <copy includeemptydirs="false" todir="bin"> <fileset dir="src/main/java"> <exclude name="**/*.launch"/> <exclude name="**/*.java"/> </fileset> </copy> <copy includeemptydirs="false" todir="bin"> <fileset dir="src/test/java"> <exclude name="**/*.launch"/> <exclude name="**/*.java"/> </fileset> </copy> <copy includeemptydirs="false" todir="bin"> <fileset dir="config"> <exclude name="**/*.launch"/> <exclude name="**/*.java"/> </fileset> </copy> </target> <target name="clean"> <delete dir="bin"/> </target> <target depends="clean" name="cleanall"/> <target depends="build-subprojects,build-project" name="build"/> <target name="build-subprojects"/> <target depends="init" name="build-project"> <echo message="${ant.project.name}: ${ant.file}"/> <javac debug="true" debuglevel="${debuglevel}" destdir="bin" source="${source}" target="${target}"> <src path="src/main/java"/> <classpath refid="FabTrace.classpath"/> </javac> <javac debug="true" debuglevel="${debuglevel}" destdir="bin" source="${source}" target="${target}"> <src path="src/test/java"/> <classpath refid="FabTrace.classpath"/> </javac> <javac debug="true" debuglevel="${debuglevel}" destdir="bin" source="${source}" target="${target}"> <src path="config"/> <classpath refid="FabTrace.classpath"/> </javac> </target> </project> (I know there's eclipse specific stuff in here. But I get the same results with or without it.) I've done ye old google search and trawled around without success. I can confirm that all the jars do really exist. I've also tried from the commandline and as sudo - again, same results. Any help would be greatly appreciated. Cheers

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  • How to customize and reuse a DataGridColumnHeader style?

    - by instcode
    Hi all, I'm trying to customize the column headers of a DataGrid to show sub-column headers as in the following screenshot: I've made a style for 2 sub-column as in the following XAML: <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data" xmlns:primitives="clr-namespace:System.Windows.Controls.Primitives;assembly=System.Windows.Controls.Data" xmlns:sl="clr-namespace:UI" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" x:Class="UI.ColumnHeaderGrid" mc:Ignorable="d"> <UserControl.Resources> <Style x:Key="SplitColumnHeaderStyle" TargetType="primitives:DataGridColumnHeader"> <Setter Property="Foreground" Value="#FF000000"/> <Setter Property="HorizontalContentAlignment" Value="Center"/> <Setter Property="VerticalContentAlignment" Value="Center"/> <Setter Property="IsTabStop" Value="False"/> <Setter Property="SeparatorBrush" Value="#FFC9CACA"/> <Setter Property="Padding" Value="4"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="primitives:DataGridColumnHeader"> <Grid x:Name="Root"> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition Width="Auto"/> </Grid.ColumnDefinitions> <Rectangle x:Name="BackgroundRectangle" Fill="#FF1F3B53" Stretch="Fill" Grid.ColumnSpan="2"/> <Rectangle x:Name="BackgroundGradient" Stretch="Fill" Grid.ColumnSpan="2"> <Rectangle.Fill> <LinearGradientBrush EndPoint=".7,1" StartPoint=".7,0"> <GradientStop Color="#FCFFFFFF" Offset="0.015"/> <GradientStop Color="#F7FFFFFF" Offset="0.375"/> <GradientStop Color="#E5FFFFFF" Offset="0.6"/> <GradientStop Color="#D1FFFFFF" Offset="1"/> </LinearGradientBrush> </Rectangle.Fill> </Rectangle> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition Width="1"/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Grid.Row="0" Grid.ColumnSpan="3" Text="Headers" TextAlignment="Center"/> <Rectangle Grid.Row="1" Grid.ColumnSpan="3" Fill="{TemplateBinding SeparatorBrush}" Height="1"/> <TextBlock Grid.Row="2" Grid.Column="0" Text="Header 1" TextAlignment="Center"/> <Rectangle Grid.Row="2" Grid.Column="1" Fill="{TemplateBinding SeparatorBrush}" Width="1"/> <TextBlock Grid.Row="2" Grid.Column="2" Text="Header 2" TextAlignment="Center"/> <Path x:Name="SortIcon" Grid.Column="2" Fill="#FF444444" Stretch="Uniform" HorizontalAlignment="Left" Margin="4,0,0,0" VerticalAlignment="Center" Width="8" Opacity="0" RenderTransformOrigin=".5,.5" Data="F1 M -5.215,6.099L 5.215,6.099L 0,0L -5.215,6.099 Z "/> </Grid> <Rectangle x:Name="VerticalSeparator" Fill="{TemplateBinding SeparatorBrush}" VerticalAlignment="Stretch" Width="1" Visibility="{TemplateBinding SeparatorVisibility}" Grid.Column="1"/> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style> </UserControl.Resources> <data:DataGrid x:Name="LayoutRoot"> <data:DataGrid.Columns> <data:DataGridTemplateColumn HeaderStyle="{StaticResource SplitColumnHeaderStyle}"> <data:DataGridTemplateColumn.CellTemplate> <DataTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Border Grid.Column="0" BorderBrush="#FFC9CACA" BorderThickness="0,0,0,0"> <TextBlock Grid.Column="0" Text="{Binding GridData.Column1}"/> </Border> <Border Grid.Column="1" BorderBrush="#FFC9CACA" BorderThickness="1,0,0,0"> <TextBlock Grid.Column="0" Text="{Binding GridData.Column2}"/> </Border> </Grid> </DataTemplate> </data:DataGridTemplateColumn.CellTemplate> </data:DataGridTemplateColumn> </data:DataGrid.Columns> </data:DataGrid> Now I want to reuse & extend this style to support 2-6 sub-column headers but I don't know if there is a way to do this, like ContentPresenter "overriding": <Style x:Key="SplitColumnHeaderStyle" TargetType="primitives:DataGridColumnHeader"> <Setter property="Template"> <Setter.Value> ... <ContentPresenter Content="{TemplateBinding Content}".../> ... </Setter.Value> </Setter> </Style> <Style x:Key="TwoSubColumnHeaderStyle" BasedOn="SplitColumnHeaderStyle"> <Setter property="Content"> <Setter.Value> <Grid 2x2.../> </Setter.Value> </Setter> </Style> <Style x:Key="ThreeSubColumnHeaderStyle" BasedOn="SplitColumnHeaderStyle"> <Setter property="Content"> <Setter.Value> <Grid 2x3.../> </Setter.Value> </Setter> </Style> Anyway, please help me on these issues: Given the template above, how to support more sub-column headers without having to create new new new new template for each? Assume that the issue above is solved. How could I attach column names outside the styles? I see that some parts, properties & visualization rules in the XAML are just copies from the original Silverlight component's style, i.e. BackgroundGradient, BackgroundRectangle, VisualStateManager... They must be there in order to support default behaviors or effects but... does anyone know how to remove them, but keep all the default behaviors/effects? Please be specific because I'm just getting start with C# & Silverlight. Thanks.

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  • scrolling lags in emacs 23.2 with GTK

    - by mefiX
    Hey there, I am using emacs 23.2 with the GTK toolkit. I built emacs from source using the following configure-params: ./configure --prefix=/usr --without-makeinfo --without-sound Which builds emacs with the following configuration: Where should the build process find the source code? /home/****/incoming/emacs-23.2 What operating system and machine description files should Emacs use? `s/gnu-linux.h' and `m/intel386.h' What compiler should emacs be built with? gcc -g -O2 -Wdeclaration-after-statement -Wno-pointer-sign Should Emacs use the GNU version of malloc? yes (Using Doug Lea's new malloc from the GNU C Library.) Should Emacs use a relocating allocator for buffers? yes Should Emacs use mmap(2) for buffer allocation? no What window system should Emacs use? x11 What toolkit should Emacs use? GTK Where do we find X Windows header files? Standard dirs Where do we find X Windows libraries? Standard dirs Does Emacs use -lXaw3d? no Does Emacs use -lXpm? yes Does Emacs use -ljpeg? yes Does Emacs use -ltiff? yes Does Emacs use a gif library? yes -lgif Does Emacs use -lpng? yes Does Emacs use -lrsvg-2? no Does Emacs use -lgpm? yes Does Emacs use -ldbus? yes Does Emacs use -lgconf? no Does Emacs use -lfreetype? yes Does Emacs use -lm17n-flt? no Does Emacs use -lotf? yes Does Emacs use -lxft? yes Does Emacs use toolkit scroll bars? yes When I'm scrolling within files of a common size (about 1000 lines) holding the up/down-keys, emacs almost hangs and produces about 50% CPU-load. I use the following plugins: ido linum tabbar auto-complete-config Starting emacs with -q fixes the problem, but then I don't have any plugins. I can't figure out, which part of my .emacs is responsible for this behaviour. Here's an excerpt of my .emacs-file: (require 'ido) (ido-mode 1) (require 'linum) (global-linum-mode 1) (require 'tabbar) (tabbar-mode 1) (tabbar-local-mode 0) (tabbar-mwheel-mode 0) (setq tabbar-buffer-groups-function (lambda () (list "All"))) (global-set-key [M-left] 'tabbar-backward) (global-set-key [M-right] 'tabbar-forward) ;; hide the toolbar (gtk etc.) (tool-bar-mode -1) ;; Mouse scrolling enhancements (setq mouse-wheel-progressive-speed nil) (setq mouse-wheel-scroll-amount '(5 ((shift) . 5) ((control) . nil))) ;; Smart-HOME (defun smart-beginning-of-line () "Forces the cursor to jump to the first none whitespace char of the current line when pressing HOME" (interactive) (let ((oldpos (point))) (back-to-indentation) (and (= oldpos (point)) (beginning-of-line)))) (put 'smart-beginning-of-line 'CUA 'move) (global-set-key [home] 'smart-beginning-of-line) (custom-set-variables ;; custom-set-variables was added by Custom. ;; If you edit it by hand, you could mess it up, so be careful. ;; Your init file should contain only one such instance. ;; If there is more than one, they won't work right. '(column-number-mode t) '(cua-mode t nil (cua-base)) '(custom-buffer-indent 4) '(delete-selection-mode nil) '(display-time-24hr-format t) '(display-time-day-and-date 1) '(display-time-mode t) '(global-font-lock-mode t nil (font-lock)) '(inhibit-startup-buffer-menu t) '(inhibit-startup-screen t) '(pc-select-meta-moves-sexps t) '(pc-select-selection-keys-only t) '(pc-selection-mode t nil (pc-select)) '(scroll-bar-mode (quote right)) '(show-paren-mode t) '(standard-indent 4) '(uniquify-buffer-name-style (quote forward) nil (uniquify))) (setq-default tab-width 4) (setq-default indent-tabs-mode t) (setq c-basic-offset 4) ;; Highlighting of the current line (global-hl-line-mode 1) (set-face-background 'hl-line "#E8F2FE") (defalias 'yes-or-no-p 'y-or-n-p) (display-time) (set-language-environment "Latin-1") ;; Change cursor color according to mode (setq djcb-read-only-color "gray") ;; valid values are t, nil, box, hollow, bar, (bar . WIDTH), hbar, ;; (hbar. HEIGHT); see the docs for set-cursor-type (setq djcb-read-only-cursor-type 'hbar) (setq djcb-overwrite-color "red") (setq djcb-overwrite-cursor-type 'box) (setq djcb-normal-color "black") (setq djcb-normal-cursor-type 'bar) (defun djcb-set-cursor-according-to-mode () "change cursor color and type according to some minor modes." (cond (buffer-read-only (set-cursor-color djcb-read-only-color) (setq cursor-type djcb-read-only-cursor-type)) (overwrite-mode (set-cursor-color djcb-overwrite-color) (setq cursor-type djcb-overwrite-cursor-type)) (t (set-cursor-color djcb-normal-color) (setq cursor-type djcb-normal-cursor-type)))) (add-hook 'post-command-hook 'djcb-set-cursor-according-to-mode) (define-key global-map '[C-right] 'forward-sexp) (define-key global-map '[C-left] 'backward-sexp) (define-key global-map '[s-left] 'windmove-left) (define-key global-map '[s-right] 'windmove-right) (define-key global-map '[s-up] 'windmove-up) (define-key global-map '[s-down] 'windmove-down) (define-key global-map '[S-down-mouse-1] 'mouse-stay-and-copy) (define-key global-map '[C-M-S-down-mouse-1] 'mouse-stay-and-swap) (define-key global-map '[S-mouse-2] 'mouse-yank-and-kill) (define-key global-map '[C-S-down-mouse-1] 'mouse-stay-and-kill) (define-key global-map "\C-a" 'mark-whole-buffer) (custom-set-faces ;; custom-set-faces was added by Custom. ;; If you edit it by hand, you could mess it up, so be careful. ;; Your init file should contain only one such instance. ;; If there is more than one, they won't work right. '(default ((t (:inherit nil :stipple nil :background "#f7f9fa" :foreground "#191919" :inverse-video nil :box nil :strike-through nil :overline nil :underline nil :slant normal :weight normal :height 98 :width normal :foundry "unknown" :family "DejaVu Sans Mono")))) '(font-lock-builtin-face ((((class color) (min-colors 88) (background light)) (:foreground "#642880" :weight bold)))) '(font-lock-comment-face ((((class color) (min-colors 88) (background light)) (:foreground "#3f7f5f")))) '(font-lock-constant-face ((((class color) (min-colors 88) (background light)) (:weight bold)))) '(font-lock-doc-face ((t (:inherit font-lock-string-face :foreground "#3f7f5f")))) '(font-lock-function-name-face ((((class color) (min-colors 88) (background light)) (:foreground "Black" :weight bold)))) '(font-lock-keyword-face ((((class color) (min-colors 88) (background light)) (:foreground "#7f0055" :weight bold)))) '(font-lock-preprocessor-face ((t (:inherit font-lock-builtin-face :foreground "#7f0055" :weight bold)))) '(font-lock-string-face ((((class color) (min-colors 88) (background light)) (:foreground "#0000c0")))) '(font-lock-type-face ((((class color) (min-colors 88) (background light)) (:foreground "#7f0055" :weight bold)))) '(font-lock-variable-name-face ((((class color) (min-colors 88) (background light)) (:foreground "Black")))) '(minibuffer-prompt ((t (:foreground "medium blue")))) '(mode-line ((t (:background "#222222" :foreground "White")))) '(tabbar-button ((t (:inherit tabbar-default :foreground "dark red")))) '(tabbar-button-highlight ((t (:inherit tabbar-default :background "white" :box (:line-width 2 :color "white"))))) '(tabbar-default ((t (:background "gray90" :foreground "gray50" :box (:line-width 3 :color "gray90") :height 100)))) '(tabbar-highlight ((t (:underline t)))) '(tabbar-selected ((t (:inherit tabbar-default :foreground "blue" :weight bold)))) '(tabbar-separator ((t nil))) '(tabbar-unselected ((t (:inherit tabbar-default))))) Any suggestions? Kind regards, mefiX

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  • Authoritative sources about Database vs. Flatfile decision

    - by FastAl
    <tldr>looking for a reference to a book or other undeniably authoritative source that gives reasons when you should choose a database vs. when you should choose other storage methods. I have provided an un-authoritative list of reasons about 2/3 of the way down this post.</tldr> I have a situation at my company where a database is being used where it would be better to use another solution (in this case, an auto-generated piece of source code that contains a static lookup table, searched by binary sort). Normally, a database would be an OK solution even though the problem does not require a database, e.g, none of the elements of ACID are needed, as it is read-only data, updated about every 3-5 years (also requiring other sourcecode changes), and fits in memory, and can be keyed into via binary search (a tad faster than db, but speed is not an issue). The problem is that this code runs on our enterprise server, but is shared with several PC platforms (some disconnected, some use a central DB, etc.), and parts of it are managed by multiple programming units, parts by the DBAs, parts even by mathematicians in another department, etc. These hit their own platform’s version of their databases (containing their own copy of the static data). What happens is that every implementation, every little change, something different goes wrong. There are many other issues as well. I can’t even use a flatfile, because one mode of running on our enterprise server does not have permission to read files (only databases, and of course, its own literal storage, e.g., in-source table). Of course, other parts of the system use databases in proper, less obscure manners; there is no problem with those parts. So why don’t we just change it? I don’t have administrative ability to force a change. But I’m affected because sometimes I have to help fix the problems, but mostly because it causes outages and tons of extra IT time by other programmers and d*mmit that makes me mad! The reason neither management, nor the designers of the system, can see the problem is that they propose a solution that won’t work: increase communication; implement more safeguards and standards; etc. But every time, in a different part of the already-pared-down but still multi-step processes, a few different diligent, hard-working, top performing IT personnel make a unique subtle error that causes it to fail, sometimes after the last round of testing! And in general these are not single-person failures, but understandable miscommunications. And communication at our company is actually better than most. People just don't think that's the case because they haven't dug into the matter. However, I have it on very good word from somebody with extensive formal study of sociology and psychology that the relatively small amount of less-than-proper database usage in this gigantic cross-platform multi-source, multi-language project is bureaucratically un-maintainable. Impossible. No chance. At least with Human Beings in the loop, and it can’t be automated. In addition, the management and developers who could change this, though intelligent and capable, don’t understand the rigidity of this ‘how humans are’ issue, and are not convincible on the matter. The reason putting the static data in sourcecode will solve the problem is, although the solution is less sexy than a database, it would function with no technical drawbacks; and since the sharing of sourcecode already works very well, you basically erase any database-related effort from this section of the project, along with all the drawbacks of it that are causing problems. OK, that’s the background, for the curious. I won’t be able to convince management that this is an unfixable sociological problem, and that the real solution is coding around these limits of human nature, just as you would code around a bug in a 3rd party component that you can’t change. So what I have to do is exploit the unsuitableness of the database solution, and not do it using logic, but rather authority. I am aware of many reasons, and posts on this site giving reasons for one over the other; I’m not looking for lists of reasons like these (although you can add a comment if I've miss a doozy): WHY USE A DATABASE? instead of flatfile/other DB vs. file: if you need... Random Read / Transparent search optimization Advanced / varied / customizable Searching and sorting capabilities Transaction/rollback Locks, semaphores Concurrency control / Shared users Security 1-many/m-m is easier Easy modification Scalability Load Balancing Random updates / inserts / deletes Advanced query Administrative control of design, etc. SQL / learning curve Debugging / Logging Centralized / Live Backup capabilities Cached queries / dvlp & cache execution plans Interleaved update/read Referential integrity, avoid redundant/missing/corrupt/out-of-sync data Reporting (from on olap or oltp db) / turnkey generation tools [Disadvantages:] Important to get right the first time - professional design - but only b/c it's meant to last s/w & h/w cost Usu. over a network, speed issue (best vs. best design vs. local=even then a separate process req's marshalling/netwk layers/inter-p comm) indicies and query processing can stand in the way of simple processing (vs. flatfile) WHY USE FLATFILE: If you only need... Sequential Row processing only Limited usage append only (no reading, no master key/update) Only Update the record you're reading (fixed length recs only) Too big to fit into memory If Local disk / read-ahead network connection Portability / small system Email / cut & Paste / store as document by novice - simple format Low design learning curve but high cost later WHY USE IN-MEMORY/TABLE (tables, arrays, etc.): if you need... Processing a single db/ff record that was imported Known size of data Static data if hardcoding the table Narrow, unchanging use (e.g., one program or proc) -includes a class that will be shared, but encapsulates its data manipulation Extreme speed needed / high transaction frequency Random access - but search is dependent on implementation Following are some other posts about the topic: http://stackoverflow.com/questions/1499239/database-vs-flat-text-file-what-are-some-technical-reasons-for-choosing-one-over http://stackoverflow.com/questions/332825/are-flat-file-databases-any-good http://stackoverflow.com/questions/2356851/database-vs-flat-files http://stackoverflow.com/questions/514455/databases-vs-plain-text/514530 What I’d like to know is if anybody could recommend a hard, authoritative source containing these reasons. I’m looking for a paper book I can buy, or a reputable website with whitepapers about the issue (e.g., Microsoft, IBM), not counting the user-generated content on those sites. This will have a greater change to elicit a change that I’m looking for: less wasted programmer time, and more reliable programs. Thanks very much for your help. You win a prize for reading such a large post!

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  • PHP sorting issue with simpleXML

    - by tugbucket
    test.xml: <?xml version="1.0"?> <props> <prop> <state statename="Mississippi"> <info> <code>a1</code> <location>Jackson</location> </info> <info> <code>d2</code> <location>Gulfport</location> </info> <info> <code>g6</code> <location>Hattiesburg</location> </info> </state> <state statename="Texas"> <info> <code>i9</code> <location>Dallas</location> </info> <info> <code>a7</code> <location>Austin</location> </info> </state> <state statename="Maryland"> <info> <code>s5</code> <location>Mount Laurel</location> </info> <info> <code>f0</code> <location>Baltimore</location> </info> <info> <code>h4</code> <location>Annapolis</location> </info> </state> </prop> </props> test.php // start the sortCities function sortCities($a, $b){ return strcmp($a->location, $b->location); } // start the sortStates function sortStates($t1, $t2) { return strcmp($t1['statename'], $t2['statename']); } $props = simplexml_load_file('test.xml'); foreach ($props->prop as $prop) { $sortedStates = array(); foreach($prop->state as $states) { $sortedStates[] = $states; } usort($sortedStates, "sortStates"); // finish the sortStates /* --- */ echo '<pre>'."\n"; print_r($sortedStates); echo '</pre>'."\n"; /* --- */ foreach ($prop->children() as $stateattr) { // this doesn't do it //foreach($sortedStates as $hotel => @attributes){ // blargh! if(isset($stateattr->info)) { $statearr = $stateattr->attributes(); echo '<optgroup label="'.$statearr['statename'].'">'."\n"; $options = array(); foreach($stateattr->info as $info) { $options[] = $info; } usort($options, "sortCities"); // finish the sortCities foreach($options as $stateattr => $info){ echo '<option value="'.$info->code.'">'.$info->location.'</option>'."\n"; } echo '</optgroup>'."\n"; } else { //empty nodes don't do squat } } } ?> This is the array that: print_r($sortedStates); prints out: Array ( [0] => SimpleXMLElement Object ( [@attributes] => Array ( [statename] => Maryland ) [info] => Array ( [0] => SimpleXMLElement Object ( [code] => s5 [location] => Mount Laurel ) [1] => SimpleXMLElement Object ( [code] => f0 [location] => Baltimore ) [2] => SimpleXMLElement Object ( [code] => h4 [location] => Annapolis ) ) ) [1] => SimpleXMLElement Object ( [@attributes] => Array ( [statename] => Mississippi ) [info] => Array ( [0] => SimpleXMLElement Object ( [code] => a1 [location] => Jackson ) [1] => SimpleXMLElement Object ( [code] => d2 [location] => Gulfport ) [2] => SimpleXMLElement Object ( [code] => g6 [location] => Hattiesburg ) ) ) [2] => SimpleXMLElement Object ( [@attributes] => Array ( [statename] => Texas ) [info] => Array ( [0] => SimpleXMLElement Object ( [code] => i9 [location] => Dallas ) [1] => SimpleXMLElement Object ( [code] => a7 [location] => Austin ) ) ) ) this: // start the sortCities function sortCities($a, $b){ return strcmp($a->location, $b->location); } plus this part of code: $options = array(); foreach($stateattr->info as $info) { $options[] = $info; } usort($options, "sortCities"); // finish the sortCities foreach($options as $stateattr => $info){ echo '<option value="'.$info->code.'">'.$info->location.'</option>'."\n"; } is doing a fine job of sorting by the 'location' node within each optgroup. You can see that in the array I can make it sort by the attribute 'statename'. What I am having trouble with is echoing out and combining the two functions in order to have it auto sort both the states and the cities within and forming the needed optgroups. I tried copying the lines for the cities and changing the names called several ways to no avail.

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  • Watching a variable for changes without polling.

    - by milkfilk
    I'm using a framework called Processing which is basically a Java applet. It has the ability to do key events because Applet can. You can also roll your own callbacks of sorts into the parent. I'm not doing that right now and maybe that's the solution. For now, I'm looking for a more POJO solution. So I wrote some examples to illustrate my question. Please ignore using key events on the command line (console). Certainly this would be a very clean solution but it's not possible on the command line and my actual app isn't a command line app. In fact, a key event would be a good solution for me but I'm trying to understand events and polling beyond just keyboard specific problems. Both these examples flip a boolean. When the boolean flips, I want to fire something once. I could wrap the boolean in an Object so if the Object changes, I could fire an event too. I just don't want to poll with an if() statement unnecessarily. import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; /* * Example of checking a variable for changes. * Uses dumb if() and polls continuously. */ public class NotAvoidingPolling { public static void main(String[] args) { boolean typedA = false; String input = ""; System.out.println("Type 'a' please."); while (true) { InputStreamReader isr = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(isr); try { input = br.readLine(); } catch (IOException ioException) { System.out.println("IO Error."); System.exit(1); } // contrived state change logic if (input.equals("a")) { typedA = true; } else { typedA = false; } // problem: this is polling. if (typedA) System.out.println("Typed 'a'."); } } } Running this outputs: Type 'a' please. a Typed 'a'. On some forums people suggested using an Observer. And although this decouples the event handler from class being observed, I still have an if() on a forever loop. import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.Observable; import java.util.Observer; /* * Example of checking a variable for changes. * This uses an observer to decouple the handler feedback * out of the main() but still is polling. */ public class ObserverStillPolling { boolean typedA = false; public static void main(String[] args) { // this ObserverStillPolling o = new ObserverStillPolling(); final MyEvent myEvent = new MyEvent(o); final MyHandler myHandler = new MyHandler(); myEvent.addObserver(myHandler); // subscribe // watch for event forever Thread thread = new Thread(myEvent); thread.start(); System.out.println("Type 'a' please."); String input = ""; while (true) { InputStreamReader isr = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(isr); try { input = br.readLine(); } catch (IOException ioException) { System.out.println("IO Error."); System.exit(1); } // contrived state change logic // but it's decoupled now because there's no handler here. if (input.equals("a")) { o.typedA = true; } } } } class MyEvent extends Observable implements Runnable { // boolean typedA; ObserverStillPolling o; public MyEvent(ObserverStillPolling o) { this.o = o; } public void run() { // watch the main forever while (true) { // event fire if (this.o.typedA) { setChanged(); // in reality, you'd pass something more useful notifyObservers("You just typed 'a'."); // reset this.o.typedA = false; } } } } class MyHandler implements Observer { public void update(Observable obj, Object arg) { // handle event if (arg instanceof String) { System.out.println("We received:" + (String) arg); } } } Running this outputs: Type 'a' please. a We received:You just typed 'a'. I'd be ok if the if() was a NOOP on the CPU. But it's really comparing every pass. I see real CPU load. This is as bad as polling. I can maybe throttle it back with a sleep or compare the elapsed time since last update but this is not event driven. It's just less polling. So how can I do this smarter? How can I watch a POJO for changes without polling? In C# there seems to be something interesting called properties. I'm not a C# guy so maybe this isn't as magical as I think. private void SendPropertyChanging(string property) { if (this.PropertyChanging != null) { this.PropertyChanging(this, new PropertyChangingEventArgs(property)); } }

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  • Floats will not align, stay staggered, can't find a solution?

    - by Sarah Proper
    What I am trying to do is build a multi column layout. The main two sections are divided 2/3 to 1/3 and inside the 2/3 column is divided 2/3 1/3 as well. My problem is that my floats will not align nicely with each other, choosing instead to stagger like stairs. I have tried declaring the widths smaller, floating them individually, including in the float sections display:block,inline, or inline-block and nothing seems to be working. I am getting really frustrated and would appreciate any help! Thanks! <div class="wrapper"> <div class="width50" style="float:left;"> <h1>Our Mission:</h1> <p> Bacon ipsum dolor sit amet swine spare ribs pork meatloaf pancetta filet mignon. Rump frankfurter pork belly prosciutto beef boudin andouille pig pork chop meatball ham drumstick filet mignon. Strip steak flank shank pig, tongue tri-tip jowl leberkas sirloin brisket t-bone. Ground round spare ribs salami capicola filet mignon. Capicola turkey t-bone corned beef sausage ham hock. Corned beef capicola leberkas pork chop, swine pastrami drumstick. Frankfurter fatback bacon jowl short loin, jerky pancetta bresaola corned beef shoulder drumstick ball tip tri-tip.</p> <div class="width50 float-left"> <img src="@Url.StaticContent(Links.Content.images.map_homepage_png)" alt="Map" /> </div> <div class="width33 float-right"> <img src="@Url.StaticContent(Links.Content.images.address_line_text_png)" alt="addressline" /> <br /> <h3>address</h3> <b>405 Empire Boulevard<br /> Rochester, NY 14609 </b> </div> </div> <div class="width33" style="float:right;"> <h1>Events</h1> <ul class="events"> <li> <h2>Fall Volunteer Festival</h2> <p> <b>october 6<br /> 10 am to 3pm </b> </p> <p> come to our town location for some fun activities for family and friends! </p> </li> <li> <h2>Fall Volunteer Festival</h2> <p> <b>october 6<br /> 10 am to 3pm </b> </p> <p> come to our town location for some fun activities for family and friends! </p> </li> <li> <h2>Fall Volunteer Festival</h2> <p> <b>october 6<br /> 10 am to 3pm </b> </p> <p> come to our town location for some fun activities for family and friends! </p> </li> </ul> </div> </div> </div> and the css: .clearfix:before, .clearfix:after, .grid-block:before, .grid-block:after, .deepest:before, .deepest:after { content: ""; display: table; } .clearfix:after, .grid-block:after, .deepest:after { clear: both; } .grid-box { float: left; } /* Grid Units */ .width16 { width: 16.666%; } .width20 { width: 20%; } .width25 { width: 25%; } .width33 { width: 39.333%; } .width40 { width: 40%; } .width50 { width: 50%; } .width60 { width: 60%; } .width66 { width: 66.666%; } .width75 { width: 75%; } .width80 { width: 80%; } .width100 { width: 100%; } .width16, .width20, .width25, .width33, .width40, .width50, .width60, .width66, .width75, .width80, .width100 { -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box; padding: 5px 10px 5px 10px; } /* Create new Block Formatting Contexts */ .bfc-o { overflow: hidden; } .bfc-f { -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box; width: 100%; float: left; } /* Align Boxes */ .float-left { float: left; } .float-right { float: right; } /* Grid Gutter */ .grid-gutter.grid-block { margin: 0 -15px; } .grid-gutter > .grid-box > * { margin: 0 15px; } .grid-gutter > .grid-box > * > :first-child { margin-top: 0; } .grid-gutter > .grid-box > * > :last-child { margin-bottom: 0; } /* Layout Defaults --------------------------------------------------------------------------------------- -------------*/ /* Center Page */ .wrapper { -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box; margin: auto; } /* Header */ #header { position: relative; padding-top: 10px; } #toolbar .float-left .module, #toolbar .float-left > time { margin: 0 15px 0 0; float: left; } #toolbar .float-right .module { margin: 0 0 0 15px; float: right; } #headerbar .module { max-width: 300px; margin-right: 0; float: right; } #logo, #logo > img, #menu { float: left; } #search { float: right; } #banner { position: absolute; top: 0; right: -200px; } /* Footer */ #footer { position: relative; text-align: center; } /* Absolute */ #absolute { position: absolute; z-index: 15; width: 100%; }

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  • jQuery returning two elements for each one it finds?

    - by John Rudy
    I'll start by saying I'm fairly new to jQuery. For the most part, I've found it intuitive and powerful, but this one circumstance has me thoroughly stumped. In the following method, the call to .each() returns two elements for every one found. It iterates over a set of table rows given IDs starting with the word, "communication," and followed by an ID number. For each row it returns, it processes twice. Using Firebug, I've validated that the DOM only has a single instance of each table row in question. Also using Firebug, I've validated that the method is not being called twice; the iteration in .each() is truly going over each returned table row twice. By the time all the AJAX call goodness is done, I'll have two entries in the database for each row created in the table. This is the code that's causing the issues: function getCommunications() { var list = $('[id^=communication]'); var communications = new Array(); list.each(function () { var communication = { ID: $(this).find('.commCompanyID').val(), /* * SNIP: more object properties here that are * unnecessary to this discussion */ }; communications.push(communication); }); return communications; } At the point of return communications, the Array returned will contain twice as many elements as there are table rows. I should note that nearly identical code (but going against specific lists of divs) is working on the same page. It's just the table that's suffering the issues. I'm using jQuery 1.4.1, the version which shipped with Visual Studio .NET 2010. The table markup is fully dynamic -- that is, aside from the header row, it's dependent on data either returned at page load or created by the user via a dialog box. I'll drop in just the code for what's created at page load; again using Firebug I've validated that what I create dynamically when an end user creates a row with the dialog box matches. (This should be readable by anyone, but for the record this is an ASP.NET MVC 2.0 project.) <table id="commTable"> <tr> <th></th> <th> Date / Time </th> <th> Contact </th> <th> Type </th> <th> Duration </th> <th> Notes </th> </tr> <% foreach (var item in Model) { %> <tr id="communication<%: item.ID %>"> <td> <a href="#" onclick="showEditCommunicationForm(<%: item.ID %>"> Edit</a> <span class="commDeleteButton"> <a href="#" onclick="deleteCommunication(<%: item.ID %>)"> Delete</a> </span> </td> <td> <span class="commDateTime"><%: item.DateTime %></span> <input type="hidden" class="commID" value="<%: item.ID %>" /> <input type="hidden" class="commIsDeleted" value="<%: item.IsDeleted %>" /> </td> <td> <span class="commSourceText"><%: item.Company.CompanyName %></span> <input type="hidden" class="commCompanyID" value="<%: item.CompanyID %>" /> </td> <td> <%: item.CommunicationType.CommunicationTypeText %> <input type="hidden" class="commTypeID" value="<%: item.CommunicationTypeID %>" /> </td> <td> <span class="commDuration"><%: item.DurationMinutes %></span> Minutes </td> <td> <span class="commNotes"><%: item.Notes %></span> </td> </tr> <% } %> </table>

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