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  • h:commandButton not working within PrimeFaces p:dataTable

    - by JamesB
    I have a PrimeFaces datatable. For each row in this table, I want to allow the user to update/delete the row entry (a user). <html xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:p="http://primefaces.prime.com.tr/ui"> <h:head> <link type="text/css" rel="stylesheet" href="themes/bluesky/skin.css" /> </h:head> <h:body> <center> <h:form> <p:panel id="viewUsersPanel" header="View Users"> <p:dataTable var="user" value="#{uController.users}" emptyMessage="No Users Found."> <p:column style="text-align: center;"> <f:facet name="header"> <h:outputText value="Name" /> </f:facet> <h:outputText value="#{user.name}" /> </p:column> <p:column style="text-align: center;"> <f:facet name="header"> <h:outputText value="Postal Address" /> </f:facet> <h:outputText value="#{user.address}" /> </p:column> <p:column style="text-align: center;"> <f:facet name="header"> <h:outputText value="Phone Number" /> </f:facet> <h:outputText value="#{user.phone}" /> </p:column> <p:column style="text-align: center;"> <f:facet name="header"> <h:outputText value="Email Address" /> </f:facet> <h:outputText value="#{user.email}" /> </p:column> <p:column style="text-align: center;"> <f:facet name="header"> <h:outputText value="DOB" /> </f:facet> <h:outputText value="#{user.dob}"> <f:convertDateTime pattern="dd-MMM-yyyy" /> </h:outputText> </p:column> <p:column style="text-align: center;"> <f:facet name="header"> <h:outputText value="No. Memberships" /> </f:facet> <h:outputText value="#{user.numberOfMemberships}" /> </p:column> <p:column style="text-align: center;"> <f:facet name="header"> <h:outputText value="Actions" /> </f:facet> <h:commandButton value="Update" action="#{uController.update}" /> <h:commandButton value="Delete" action="#{uController.delete}" /> </p:column> </p:dataTable> <h:panelGrid columns="2" cellpadding="2" id="footerPanelGrid" border="0"> <h:commandButton action="#{uController.home}" value="Home Page" /> </h:panelGrid> </p:panel> </h:form> </center> </h:body> </html> However, neither of the buttons work. Instead they appear to simply refresh the view page. I have ran the app in debug and neither update or delete method is hit. I suspect this may be due to using h:commandButton within a p:dataTable. However, I have also tried p:commandButton but to no avail. For reference, here is a snippet of the UserController class: @ManagedBean(name="uController") public class UserController extends AbstractController { private Collection<User> users; ... public String update() { System.out.println("Ready for update"); return "update-user"; } public String delete() { System.out.println("Ready for delete"); return "delete-user"; } ... }

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  • Problem with Google Calendar API invocation at server side

    - by Raffo
    Hi guys, I have problems with the invocation of the Google Calendar API. I downloaded the library for java and I added as external JAR in eclipse the following files: gdata-core, gdata-calendar, gdata- calendar-meta, gdata-client-meta, gdata-client. Then, I created a the method as it follows: import com.google.gdata.client.calendar.CalendarService; import com.google.gdata.data.calendar.CalendarEntry; import com.google.gdata.data.calendar.CalendarFeed; import com.google.gwt.user.server.rpc.RemoteServiceServlet; public class GCalServImpl extends RemoteServiceServlet implements GCalServ { @Override public String RetrieveCalendars() { // TODO Auto-generated method stub // Create a CalenderService and authenticate try{ CalendarService myService = new CalendarService("taskR"); myService.setUserCredentials(***username***, "***password***"); // Send the request and print the response URL feedUrl = new URL("http://www.google.com/calendar/feeds/default/ allcalendars/full"); CalendarFeed resultFeed = myService.getFeed(feedUrl, CalendarFeed.class); System.out.println("Your calendars:"); System.out.println(); String s = ""; for (int i = 0; i < resultFeed.getEntries().size(); i++) { CalendarEntry entry = resultFeed.getEntries().get(i); s=entry.getTitle().getPlainText(); System.out.println("\t" + s); return s; } }catch(Exception e){ e.printStackTrace(); } return null; } I then call it from the client side doing a basic async invocation. If I try to launch the program I got the following errors: WARNING: Error for /taskr/cal java.lang.NoClassDefFoundError: com/google/gdata/client/calendar/ CalendarService at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389) at java.lang.Class.getConstructor0(Class.java:2699) at java.lang.Class.newInstance0(Class.java:326) at java.lang.Class.newInstance(Class.java:308) at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153) at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java: 428) at org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java: 339) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: 487) 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.content(HttpConnection.java:938) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) 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) Caused by: java.lang.ClassNotFoundException: com.google.gdata.client.calendar.CalendarService at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:315) at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java: 151) at java.lang.ClassLoader.loadClass(ClassLoader.java:250) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398) ... 33 more What can I do??

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  • Help needed with drawRect:

    - by Andrew Coad
    Hi, I'm having a fundamental issue with use of drawRect: Any advice would be greatly appreciated. The application needs to draw a variety of .png images at different times, sometimes with animation, sometimes without. A design goal that I was hoping to adhere to is to have the code inside drawRect: very simple and "dumb" - i.e. just do drawing and no other application logic. To draw the image I am using the drawAtPoint: method of UIImage. Since this method does not take a CGContext as a parameter, it can only be called within the drawRect: method. So I have: - (void)drawRect:(CGRect)rect { [firstImage drawAtPoint:CGPointMake(firstOffsetX, firstOffsetY)]; } All fine and dandy for one image. To draw multiple images (over time) the approach I have taken is to maintain an array of dictionaries with each dictionary containing an image, the point location to draw at and a flag to enable/suppress drawing for that image. I add dictionaries to the array over time and trigger drawing via the setNeedsDisplay: method of UIView. Use of an array of dictionaries allows me to completely reconstruct the entire display at any time. drawRect: now becomes: - (void)drawRect:(CGRect)rect { for (NSMutableDictionary *imageDict in [self imageDisplayList]) { if ([[imageDict objectForKey:@"needsDisplay"] boolValue]) { [[imageDict objectForKey:@"image"] drawAtPoint:[[imageDict objectForKey:@"location"] CGPointValue]]; [imageDict setValue:[NSNumber numberWithBool:NO] forKey:@"needsDisplay"]; } } } Still OK. The code is simple and compact. Animating this is where I run into problems. The first problem is where do I put the animation code? Do I put it in UIView or UIViewController? If in UIView, do I put it in drawRect: or elsewhere? Because the actual animation depends on the overall state of the application, I would need nested switch statements which, if put in drawRect:, would look something like this: - (void)drawRect:(CGRect)rect { for (NSMutableDictionary *imageDict in [self imageDisplayList]) { if ([[imageDict objectForKey:@"needsDisplay"] boolValue]) { switch ([self currentState]) { case STATE_1: switch ([[imageDict objectForKey:@"animationID"] intValue]) { case ANIMATE_FADE_IN: [self setAlpha:0.0]; [UIView beginAnimations:[[imageDict objectForKey:@"animationID"] intValue] context:nil]; [UIView setAnimationDelegate:self]; [UIView setAnimationCurve:UIViewAnimationCurveEaseIn]; [UIView setAnimationDuration:2]; [self setAlpha:1.0]; break; case ANIMATE_FADE_OUT: [self setAlpha:1.0]; [UIView beginAnimations:[[imageDict objectForKey:@"animationID"] intValue] context:nil]; [UIView setAnimationDelegate:self]; [UIView setAnimationCurve:UIViewAnimationCurveEaseOut]; [UIView setAnimationDuration:2]; [self setAlpha:0.0]; break; case ANIMATE_OTHER: // similar code here break; default: break; } break; case STATE_2: // similar code here break; default: break; } [[imageDict objectForKey:@"image"] drawAtPoint:[[imageDict objectForKey:@"location"] CGPointValue]]; [imageDict setValue:[NSNumber numberWithBool:NO] forKey:@"needsDisplay"]; } } [UIView commitAnimations]; } In addition, to make multiple sequential animations work correctly, there would need to be an outer controlling mechanism involving the animation delegate animationDidStop: callback that would set the needsDisplay entries in the dictionaries to allow/suppress drawing (and animation). The point that we are at now is that it all starts to look very ugly. More specifically: drawRect: starts to bloat quickly and contain code that is not "just drawing" code the UIView needs implicit awareness of the application state the overall process of drawing is now spread across three methods at a minimum And on to the point of this post: how can I do this better? What would the experts out there recommend in terms of overall structure? How can I keep application state information out of the view? Am I looking at this problem from the wrong direction. Is there some completely different approach that I should consider?

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  • Rails: Need a helping hand to finish this Jquery/Ajax problem.

    - by DJTripleThreat
    Here's my problem: I have a combo box that when its index changes I want a div tag with the id="services" to repopulate with checkboxes based on that comboboxes value. I want this to be done using ajax. This is my first time working with ajax for rails so I need a helping hand. Here is what I have so far: My application.js file. Something that Ryan uses in one of his railscasts. This is supposed to be a helper method for handling ajax requests. Is this useful? Should I be using this?: //<![CDATA[ $.ajaxSetup({ 'beforeSend': function(xhr) {xhr.setRequestHeader("Accept","text/javascript")} }); // This function doesn't return any results. How might I change that? Or // should I have another function to do that? $.fn.submitWithAjax = function() { this.submit(function() { $.post($(this).attr("action"), $(this).serialize(), null, "script"); return true; }); }; //]]> An external javascript file for this template (/public/javascripts/combo_box.js): //<![CDATA[ $(document).ready(function(){ $('#event_service_time_allotment').change(function () { // maybe I should be using submitWithAjax(); ?? $(this).parent().submit(); }); }); //]]> My ???.js.erb file. I'm not sure where this file should go. Should I make an ajax controller?? Someone help me out with that part please. I can write this code no problem, I just need to know where it should go and what the file name should be called (best practices etc): // new.js.erb: dynamic choices... expecting a time_allotment alert('test'); // TODO: Return a json object or something with a result set of services // I should be expecting something like: // params[:event_service][:time_allotment] i think which I should use // to return a json object (??) to be parsed or rendered html // for the div#services. Here is my controller's new action. Am I supposed to respond to javascript here? Should I make an ajax controller instead? What's the best way to do this?: # /app/controllers/event_services_controller.rb def new @event_service = EventService.new respond_to do |format| format.html # new.html.erb format.xml { render :xml => @event_service } format.js # should I have a javascript handler here? i'm lost! end end My /app/views/event_service/new.html.erb. My ajax call I think should be a different action then the form: <% content_for :head do %> <%= javascript_include_tag '/javascripts/combo_box.js' %> <% end %> <% form_for @event_service, :url => admin_events_path, :html => {:method => :post} do |f| %> <!-- TimeAllotment is a tabless model which is why this is done like so... --> <!-- This select produces an id of: "event_service_time_allotment" and a name of: "event_service[time_allotment]" --> <%= select("event_service", "time_allotment", TimeAllotment.all.collect {|ta| [ta.title, ta.value]}, {:prompt => true}) %> Services: <!-- this div right here needs to be repopulated when the above select changes. --> <div id="services"> <% for service_type in ServiceType.all %> <div> <%= check_box_tag "event_service[service_type_ids][]", service_type.id, false %> <%=h service_type.title %> </div> <% end %> </div> <% end %> ok so right now ALL of the services are there to be chosen from. I want them to change based on what is selected in the combobox event_service_time_allotment. Thanks, I know this is super complicated so any helpful answers will get an upvote.

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  • Problem regarding listShuttle component in richFaces ?

    - by Hari
    I am a newbee for Richfaces components, When i am using the <rich:listShuttle> the Arraylist specified in the targetValue is now getting updated with the latest data? Kindly help MyJSF File <a4j:region> <rich:listShuttle sourceValue="#{bean.selectItems}" id="one" targetValue="#{bean.selectItemsone}" var="items" listsHeight="150" sourceListWidth="130" targetListWidth="130" sourceCaptionLabel="Intial Items" targetCaptionLabel="Selected Items" converter="Listconverter"> <rich:column> <h:outputText value="#{items.value}"></h:outputText> </rich:column> </rich:listShuttle> </a4j:region> <a4j:region> <a4j:commandButton value="Submit" action="#{bean.action}" /> </a4j:region> My Managed Bean enter code here private List<String> selectedData; private List<BeanItems> selectItems; private List<BeanItems> selectItemsone; public String action() { System.out.println(selectItems); System.out.println(selectItemsone); System.out.println("Select Item List"); Iterator<BeanItems> iterator = selectItems.iterator(); while (iterator.hasNext()) { BeanItems item = (BeanItems) iterator.next(); System.out.println(item.getValue()); } System.out.println("/nSelect Item one list "); Iterator<BeanItems> iterator2 = selectItemsone.iterator(); while (iterator2.hasNext()) { BeanItems item = (BeanItems) iterator2.next(); System.out.println(item.getValue()); } return ""; } public void setSelectedData(List<String> selectedData) { this.selectedData = selectedData; } public List<String> getSelectedData() { return selectedData; } /** * @return the selectItems */ public List<BeanItems> getSelectItems() { if (selectItems == null) { selectItems = new ArrayList<BeanItems>(); selectItems.add(new BeanItems("value4", "label4")); selectItems.add(new BeanItems("value5", "label5")); selectItems.add(new BeanItems("value6", "label6")); selectItems.add(new BeanItems("value7", "label7")); selectItems.add(new BeanItems("value8", "label8")); selectItems.add(new BeanItems("value9", "label9")); selectItems.add(new BeanItems("value10", "label10")); } return selectItems; } /** * @return the selectItemsone */ public List<BeanItems> getSelectItemsone() { if (selectItemsone == null) { selectItemsone = new ArrayList<BeanItems>(); selectItemsone.add(new BeanItems("value1", "label1")); selectItemsone.add(new BeanItems("value2", "label2")); selectItemsone.add(new BeanItems("value3", "label3")); } return selectItemsone; } My Converter Class enter code here public Object getAsObject(FacesContext context, UIComponent component,String value) { int index = value.indexOf(':'); return new BeanItems(value.substring(0, index), value.substring(index + 1)); } public String getAsString(FacesContext context, UIComponent component,Object value) { BeanItems beanItems = (BeanItems) value; return beanItems.getValue() + ":" + beanItems.getData(); } My BeanItems Class enter code here private String data; //Getter & setter private String value; //Getter & setter public BeanItems() { } public BeanItems(String value, String data) { this.value = value; this.data = data; } public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((data == null) ? 0 : data.hashCode()); result = prime * result + ((value == null) ? 0 : value.hashCode()); return result; } public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; final BeanItems other = (BeanItems) obj; if (data == null) { if (other.data != null) return false; } else if (!data.equals(other.data)) return false; if (value == null) { if (other.value != null) return false; } else if (!value.equals(other.value)) return false; return true; }

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  • JUnit testing, exception in threa main

    - by Crystal
    I am new to JUnit and am trying to follow my prof's example. I have a Person class and a PersonTest class. When I try to compile PersonTest.java, I get the following error: Exception in thread "main" java.lang.NoSuchMethodError: main I am not really sure why since I followed his example. Person.java public class Person implements Comparable { String firstName; String lastName; String telephone; String email; public Person() { firstName = ""; lastName = ""; telephone = ""; email = ""; } public Person(String firstName) { this.firstName = firstName; } public Person(String firstName, String lastName, String telephone, String email) { this.firstName = firstName; this.lastName = lastName; this.telephone = telephone; this.email = email; } public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public String getLastName() { return lastName; } public void setLastName(String lastName) { this.lastName = lastName; } public String getTelephone() { return telephone; } public void setTelephone(String telephone) { this.telephone = telephone; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public int compareTo(Object o) { String s1 = this.lastName + this.firstName; String s2 = ((Person) o).lastName + ((Person) o).firstName; return s1.compareTo(s2); } public boolean equals(Object otherObject) { // a quick test to see if the objects are identical if (this == otherObject) { return true; } // must return false if the explicit parameter is null if (otherObject == null) { return false; } if (!(otherObject instanceof Person)) { return false; } Person other = (Person) otherObject; return firstName.equals(other.firstName) && lastName.equals(other.lastName) && telephone.equals(other.telephone) && email.equals(other.email); } public int hashCode() { return this.email.toLowerCase().hashCode(); } public String toString() { return getClass().getName() + "[firstName = " + firstName + '\n' + "lastName = " + lastName + '\n' + "telephone = " + telephone + '\n' + "email = " + email + "]"; } } PersonTest.java import org.junit.Test; // JDK 5.0 annotation support import static org.junit.Assert.assertTrue; // Using JDK 5.0 static imports import static org.junit.Assert.assertFalse; // Using JDK 5.0 static imports import junit.framework.JUnit4TestAdapter; // Need this to be compatible with old test driver public class PersonTest { /** A test to verify equals method. */ @Test public void checkEquals() { Person p1 = new Person("jj", "aa", "[email protected]", "1112223333"); assertTrue(p1.equals(p1)); // first check in equals method assertFalse(p1.equals(null)); // second check in equals method assertFalse(p1.equals(new Object())); // third chk in equals method Person p2 = new Person("jj", "aa", "[email protected]", "1112223333"); assertTrue(p1.equals(p2)); // check for deep comparison p1 = new Person("jj", "aa", "[email protected]", "1112223333"); p2 = new Person("kk", "aa", "[email protected]", "1112223333"); assertFalse(p1.equals(p2)); // check for deep comkparison } }

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  • Why does windows XP minimize my swing full screen window on my second screen ?

    - by Laurent K
    Hello dear fellows, In the application I'm developping (in Java/swing), I have to show a full screen window on the second screen of the user. I did this using a code similar to the one you'll find below... Be, as soon as I click in a window opened by windows explorer, or as soon as I open windows explorer (i'm using windows XP), the full screen window is minimized... Do you know any way or workaround to fix this problem, or is there something important I did not understand with full screen windows? Thanks for the help, import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JWindow; import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.Window; import javax.swing.JButton; import javax.swing.JToggleButton; import java.awt.Rectangle; import java.awt.GridBagLayout; import javax.swing.JLabel; public class FullScreenTest { private JFrame jFrame = null; // @jve:decl-index=0:visual-constraint="94,35" private JPanel jContentPane = null; private JToggleButton jToggleButton = null; private JPanel jFSPanel = null; // @jve:decl-index=0:visual-constraint="392,37" private JLabel jLabel = null; private Window window; /** * This method initializes jFrame * * @return javax.swing.JFrame */ private JFrame getJFrame() { if (jFrame == null) { jFrame = new JFrame(); jFrame.setSize(new Dimension(474, 105)); jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jFrame.setContentPane(getJContentPane()); } return jFrame; } /** * This method initializes jContentPane * * @return javax.swing.JPanel */ private JPanel getJContentPane() { if (jContentPane == null) { jContentPane = new JPanel(); jContentPane.setLayout(null); jContentPane.add(getJToggleButton(), null); } return jContentPane; } /** * This method initializes jToggleButton * * @return javax.swing.JToggleButton */ private JToggleButton getJToggleButton() { if (jToggleButton == null) { jToggleButton = new JToggleButton(); jToggleButton.setBounds(new Rectangle(50, 23, 360, 28)); jToggleButton.setText("Show Full Screen Window on 2nd screen"); jToggleButton.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent e) { showFullScreenWindow(jToggleButton.isSelected()); } }); } return jToggleButton; } protected void showFullScreenWindow(boolean b) { if(window==null){ window = initFullScreenWindow(); } window.setVisible(b); } private Window initFullScreenWindow() { GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice[] gds = ge.getScreenDevices(); GraphicsDevice gd = gds[1]; JWindow window = new JWindow(gd.getDefaultConfiguration()); window.setContentPane(getJFSPanel()); gd.setFullScreenWindow(window); return window; } /** * This method initializes jFSPanel * * @return javax.swing.JPanel */ private JPanel getJFSPanel() { if (jFSPanel == null) { jLabel = new JLabel(); jLabel.setBounds(new Rectangle(18, 19, 500, 66)); jLabel.setText("Hello ! Now, juste open windows explorer and see what happens..."); jFSPanel = new JPanel(); jFSPanel.setLayout(null); jFSPanel.setSize(new Dimension(500, 107)); jFSPanel.add(jLabel, null); } return jFSPanel; } /** * @param args */ public static void main(String[] args) { FullScreenTest me = new FullScreenTest(); me.getJFrame().setVisible(true); } }

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  • surfaceDestroyed called out of turn

    - by Avasulthiris
    I'm currently developing on minimum sdk version 3 (Android 1.5 - cupcake) and I'm having a strange unexplained issue that I have not been able to solve on my own. It is now becoming a rather urgent issue as I've already missed 1 deadline... I'm writing a high-level library to make long term android development easier and quicker. The one specific module has to capture images for a application... I've gotten everything right so far over the last couple months, except this one little thing and I don't know what to do any more: When I use the Camera object and implement a SurfaceHolder.Callback, the methods surfaceCreated() and surfaceChanged() are called one after the other. Then when the activity finishes, surfaceDestroyed() is called. This is how it should be, but when I stick the exact same code in my library (plain Java library that references the Android API - not in an activity), surfaceDestroyed() is called directly after created and changed. As a result - the camera object is closed before I can use it and the application force closes. What a pain. I can't do anything! This method call is controlled by the device.. Why does the surface close for no reason? Even when I post it to run on the activity thread through my own invokeAndWait(Runnable) method, like I do for many other things. I have 5 different working examples of different ways and implementations of capturing images in android but I still get the same issue when I plug it into my library. I don't understand what the difference is. The code is pretty much the same - and I post all the related code to the UI thread so its not a thread handling issue or anything like that. I've rewritten it about 20 times in different ways - same issue every time.. The only other way to approach it that I know of is creating a new Camera and setting it to the VideoView. The android source (c++ native code) however provides no Camera constructor, only an open() method which automatically forwards the camera's state to 'prepared' but I can only set the camera to the VideoView from the 'initialized' state. Pretty silly, I know, but there is no way around it unless I modify the Android library source code haha. not an option! The API does not allow for this method - you are expected to use it like my first example. So essentially - i just need to understand exactly why surfaceDestroyed() is called out of turn and if there is anything I can do to avoid it closing? If i can just understand the exact logic behind it and how it works! The documentation isn't much help! Secondly, if someone knows of any alternative ways to do it, as my second example, but hopefully one which the API actually allows for? haha Thanks guys. I would post code, but its fairly complicated, a couple thousand lines for this specific class and it would probably take a couple days to explain with all the threading and event listeners and what not. I just need help with this 1 single thing. Please let me know if you have any questions.

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  • Using inheritance and polymorphism to solve a common game problem

    - by Barry Brown
    I have two classes; let's call them Ogre and Wizard. (All fields are public to make the example easier to type in.) public class Ogre { int weight; int height; int axeLength; } public class Wizard { int age; int IQ; int height; } In each class I can create a method called, say, battle() that will determine who will win if an Ogre meets and Ogre or a Wizard meets a Wizard. Here's an example. If an Ogre meets an Ogre, the heavier one wins. But if the weight is the same, the one with the longer axe wins. public Ogre battle(Ogre o) { if (this.height > o.height) return this; else if (this.height < o.height) return o; else if (this.axeLength > o.axeLength) return this; else if (this.axeLength < o.axeLength) return o; else return this; // default case } We can make a similar method for Wizards. But what if a Wizard meets an Ogre? We could of course make a method for that, comparing, say, just the heights. public Wizard battle(Ogre o) { if (this.height > o.height) return this; else if (this.height < o.height) return o; else return this; } And we'd make a similar one for Ogres that meet Wizard. But things get out of hand if we have to add more character types to the program. This is where I get stuck. One obvious solution is to create a Character class with the common traits. Ogre and Wizard inherit from the Character and extend it to include the other traits that define each one. public class Character { int height; public Character battle(Character c) { if (this.height > c.height) return this; else if (this.height < c.height) return c; else return this; } } Is there a better way to organize the classes? I've looked at the strategy pattern and the mediator pattern, but I'm not sure how either of them (if any) could help here. My goal is to reach some kind of common battle method, so that if an Ogre meets an Ogre it uses the Ogre-vs-Ogre battle, but if an Ogre meets a Wizard, it uses a more generic one. Further, what if the characters that meet share no common traits? How can we decide who wins a battle?

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  • Problem With View Helpers

    - by Richard Knop
    I wrote few custom view helpers but I have a little trouble using them. If I add the helper path in controller action like this: public function fooAction() { $this->view->addHelperPath('My/View/Helper', 'My_View_Helper'); } Then I can use the views from that path without a problem. But when I add the path in the bootstrap file like this: protected function _initView() { $this->view = new Zend_View(); $this->view->doctype('XHTML1_STRICT'); $this->view->headScript()->appendFile($this->view->baseUrl() . '/js/jquery-ui/jquery.js'); $this->view->headMeta()->appendHttpEquiv('Content-Type', 'text/html; charset=UTF-8'); $this->view->headMeta()->appendHttpEquiv('Content-Style-Type', 'text/css'); $this->view->headMeta()->appendHttpEquiv('Content-Language', 'sk'); $this->view->headLink()->appendStylesheet($this->view->baseUrl() . '/css/reset.css'); $this->view->addHelperPath('My/View/Helper', 'My_View_Helper'); } Then the view helpers don't work. Why is that? It's too troublesome to add the path in every controller action. Here is an example of how my custom view helpers look: class My_View_Helper_FooBar { public function fooBar() { return 'hello world'; } } I use them like this in views: <?php echo $this->fooBar(); ?> Should I post my whole bootstrap file? UPDATE: Added complete bootstrap file just in case: class Bootstrap extends Zend_Application_Bootstrap_Bootstrap { protected function _initFrontController() { $this->frontController = Zend_Controller_Front::getInstance(); $this->frontController->addModuleDirectory(APPLICATION_PATH . '/modules'); Zend_Controller_Action_HelperBroker::addPath( 'My/Controller/Action/Helper', 'My_Controller_Action_Helper' ); $this->frontController->registerPlugin(new My_Controller_Plugin_Auth()); $this->frontController->setBaseUrl('/'); } protected function _initView() { $this->view = new Zend_View(); $this->view->doctype('XHTML1_STRICT'); $this->view->headScript()->appendFile($this->view->baseUrl() . '/js/jquery-ui/jquery.js'); $this->view->headMeta()->appendHttpEquiv('Content-Type', 'text/html; charset=UTF-8'); $this->view->headMeta()->appendHttpEquiv('Content-Style-Type', 'text/css'); $this->view->headMeta()->appendHttpEquiv('Content-Language', 'sk'); $this->view->headLink()->appendStylesheet($this->view->baseUrl() . '/css/reset.css'); $this->view->addHelperPath('My/View/Helper', 'My_View_Helper'); } protected function _initDb() { $this->configuration = new Zend_Config_Ini(APPLICATION_PATH . '/configs/application.ini', APPLICATION_ENVIRONMENT); $this->dbAdapter = Zend_Db::factory($this->configuration->database); Zend_Db_Table_Abstract::setDefaultAdapter($this->dbAdapter); $stmt = new Zend_Db_Statement_Pdo($this->dbAdapter, "SET NAMES 'utf8'"); $stmt->execute(); } protected function _initAuth() { $this->auth = Zend_Auth::getInstance(); } protected function _initCache() { $frontend= array('lifetime' => 7200, 'automatic_serialization' => true); $backend= array('cache_dir' => 'cache'); $this->cache = Zend_Cache::factory('core', 'File', $frontend, $backend); } public function _initTranslate() { $this->translate = new Zend_Translate('Array', BASE_PATH . '/languages/Slovak.php', 'sk_SK'); $this->translate->setLocale('sk_SK'); } protected function _initRegistry() { $this->registry = Zend_Registry::getInstance(); $this->registry->configuration = $this->configuration; $this->registry->dbAdapter = $this->dbAdapter; $this->registry->auth = $this->auth; $this->registry->cache = $this->cache; $this->registry->Zend_Translate = $this->translate; } protected function _initUnset() { unset($this->frontController, $this->view, $this->configuration, $this->dbAdapter, $this->auth, $this->cache, $this->translate, $this->registry); } protected function _initGetRidOfMagicQuotes() { if (get_magic_quotes_gpc()) { function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; } $_POST = array_map('stripslashes_deep', $_POST); $_GET = array_map('stripslashes_deep', $_GET); $_COOKIE = array_map('stripslashes_deep', $_COOKIE); $_REQUEST = array_map('stripslashes_deep', $_REQUEST); } } public function run() { $frontController = Zend_Controller_Front::getInstance(); $frontController->dispatch(); } }

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  • C# DotNetNuke Module: GridVIew AutoGenerateEditButton is skipping over a field on update.

    - by AlexMax
    I have a GridView with an automatically generated Edit button. I wanted some customized behavior for the Image column, since I wanted it to be a drop down list of items as opposed to a simple input field, and I also wanted some nice "fallback" in case the value in the database didn't actually exist in the drop down list. With the code I have done so far, I have gotten the behavior I desire out of the Image field. The problem is that when i attempt to update that particular field, I get an error spit out back at me that it can't find a method to update the form with: ObjectDataSource 'objDataSource' could not find a non-generic method 'UpdateDiscovery' that has parameters: ModuleId, Visible, Position, Title, Link, ItemId. That's not good, because I DO have an UpdateDiscovery method. However, between Title and Link, there is supposed to be another param that belongs to the Image field, and it's not being passed. I realize that it's probably the update button doesn't know to pass that field, since it's a TemplateField and not a BoundField, and when I use Bind('image') as the selected value for the drop down list, it seems to update fine...but only as long as the field in the database when I try and edit the row actually exists, otherwise it bombs out and gives me an error about the value not existing in the drop down list. I have the following GridView defined: <asp:GridView ID="grdDiscoverys" runat="server" DataSourceID="objDataSource" EnableModelValidation="True" AutoGenerateColumns="false" AutoGenerateEditButton="true" AutoGenerateDeleteButton="true" DataKeyNames="ItemId" OnRowDataBound="cmdDiscovery_RowDataBound"> <Columns> <asp:BoundField DataField="ItemId" HeaderText="#" ReadOnly="true" /> <asp:BoundField DataField="Visible" HeaderText="Visible" /> <asp:BoundField DataField="Position" HeaderText="Position" /> <asp:TemplateField HeaderText="Image"> <ItemTemplate> <asp:Label ID="lblViewImage" runat="server" /> </ItemTemplate> <EditItemTemplate> <asp:DropDownList ID="ddlEditImage" runat="server" title="Image" DataValueField="Key" DataTextField="Value" /> </EditItemTemplate> </asp:TemplateField> <asp:BoundField DataField="Title" HeaderText="Title" /> <asp:BoundField DataField="Link" HeaderText="Link" /> </Columns> </asp:GridView> The datasource that this is tied to: <asp:ObjectDataSource ID="objDataSource" runat="server" TypeName="MyCompany.Modules.Discovery.DiscoveryController" SelectMethod="GetDiscoverys" UpdateMethod="UpdateDiscovery" DeleteMethod="DeleteDiscovery"> <SelectParameters> <asp:QueryStringParameter Name="ModuleId" QueryStringField="mid" /> </SelectParameters> <UpdateParameters> <asp:QueryStringParameter Name="ModuleId" QueryStringField="mid" /> </UpdateParameters> <DeleteParameters> <asp:QueryStringParameter Name="ModuleId" QueryStringField="mid" /> </DeleteParameters> </asp:ObjectDataSource> The cmdDiscovery_RowDataBound method that gets called when the row's data is bound is the following C# code: protected void cmdDiscovery_RowDataBound(object sender, GridViewRowEventArgs e) { try { if (e.Row.RowIndex >= 0) { int intImage = ((DiscoveryInfo)e.Row.DataItem).Image; if (grdDiscoverys.EditIndex == -1) { // View Label lblViewImage = ((Label)e.Row.FindControl("lblViewImage")); if (GetFileDictionary().ContainsKey(intImage)) { lblViewImage.Text = GetFileDictionary()[intImage]; } else { lblViewImage.Text = "Missing Image"; } } else { // Edit DropDownList ddlEditImage = ((DropDownList)e.Row.FindControl("ddlEditImage")); ddlEditImage.DataSource = GetFileDictionary(); ddlEditImage.DataBind(); if (GetFileDictionary().ContainsKey(intImage)) { ddlEditImage.SelectedValue = intImage.ToString(); } } } } catch (Exception exc) { //Module failed to load Exceptions.ProcessModuleLoadException(this, exc); } } How do I make sure that the Image value in the drop down list is passed to the update function?

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  • Saving a Join Model

    - by Thorpe Obazee
    I've been reading the cookbook for a while now and still don't get how I'm supposed to do this: My original problem was this: A related Model isn't being validated From RabidFire's commment: If you want to count the number of Category models that a new Post is associated with (on save), then you need to do this in the beforeSave function as I've mentioned. As you've currently set up your models, you don't need to use the multiple rule anywhere. If you really, really want to validate against a list of Category IDs for some reason, then create a join model, and validate category_id with the multiple rule there. Now, I have these models and are now validating. The problem now is that data isn't being saved in the Join Table: class Post extends AppModel { var $name = 'Post'; var $hasMany = array( 'CategoryPost' => array( 'className' => 'CategoryPost' ) ); var $belongsTo = array( 'Page' => array( 'className' => 'Page' ) ); class Category extends AppModel { var $name = 'Category'; var $hasMany = array( 'CategoryPost' => array( 'className' => 'CategoryPost' ) ); class CategoryPost extends AppModel { var $name = 'CategoryPost'; var $validate = array( 'category_id' => array( 'rule' => array('multiple', array('in' => array(1, 2, 3, 4))), 'required' => FALSE, 'message' => 'Please select one, two or three options' ) ); var $belongsTo = array( 'Post' => array( 'className' => 'Post' ), 'Category' => array( 'className' => 'Category' ) ); This is the new Form: <div id="content-wrap"> <div id="main"> <h2>Add Post</h2> <?php echo $this->Session->flash();?> <div> <?php echo $this->Form->create('Post'); echo $this->Form->input('Post.title'); echo $this->Form->input('CategoryPost.category_id', array('multiple' => 'checkbox')); echo $this->Form->input('Post.body', array('rows' => '3')); echo $this->Form->input('Page.meta_keywords'); echo $this->Form->input('Page.meta_description'); echo $this->Form->end('Save Post'); ?> </div> <!-- main ends --> </div> The data I am producing from the form is as follows: Array ( [Post] => Array ( [title] => 1234 [body] => 1234 ) [CategoryPost] => Array ( [category_id] => Array ( [0] => 1 [1] => 2 ) ) [Page] => Array ( [meta_keywords] => 1234 [meta_description] => 1234 [title] => 1234 [layout] => index ) ) UPDATE: controller action //Controller action function admin_add() { // pr(Debugger::trace()); $this->set('categories', $this->Post->CategoryPost->Category->find('list')); if ( ! empty($this->data)) { $this->data['Page']['title'] = $this->data['Post']['title']; $this->data['Page']['layout'] = 'index'; debug($this->data); if ($this->Post->saveAll($this->data)) { $this->Session->setFlash('Your post has been saved', 'flash_good'); $this->redirect($this->here); } } } UPDATE #2: Should I just do this manually? The problem is that the join tables doesn't have things saved in it. Is there something I'm missing? UPDATE #3 RabidFire gave me a solution. I already did this before and am quite surprised as so why it didn't work. Thus, me asking here. The reason I think there is something wrong. I don't know where: Post beforeSave: function beforeSave() { if (empty($this->id)) { $this->data[$this->name]['uri'] = $this->getUniqueUrl($this->data[$this->name]['title']); } if (isset($this->data['CategoryPost']['category_id']) && is_array($this->data['CategoryPost']['category_id'])) { echo 'test'; $categoryPosts = array(); foreach ($this->data['CategoryPost']['category_id'] as $categoryId) { $categoryPost = array( 'category_id' => $categoryId ); array_push($categoryPosts, $categoryPost); } $this->data['CategoryPost'] = $categoryPosts; } debug($this->data); // Gives RabidFire's correct array for saving. return true; } My Post action: function admin_add() { // pr(Debugger::trace()); $this->set('categories', $this->Post->CategoryPost->Category->find('list')); if ( ! empty($this->data)) { $this->data['Page']['title'] = $this->data['Post']['title']; $this->data['Page']['layout'] = 'index'; debug($this->data); // First debug is giving the correct array as above. if ($this->Post->saveAll($this->data)) { debug($this->data); // STILL gives the above array. which shouldn't be because of the beforeSave in the Post Model // $this->Session->setFlash('Your post has been saved', 'flash_good'); // $this->redirect($this->here); } } }

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  • Value gets changed upon comiting. | CallableStatements

    - by Triztian
    Hello, I having a weird problem with a DAO class and a StoredProcedure, what is happening is that I use a CallableStatement object which takes 15 IN parameters, the value of the field id_color is retrieved correctly from the HTML forms it even is set up how it should in the CallableStatement setter methods, but the moment it is sent to the database the id_color is overwriten by the value 3 here's the "context": I have the following class DAO.CoverDAO which handles the CRUD operations of this table CREATE TABLE `cover_details` ( `refno` int(10) unsigned NOT NULL AUTO_INCREMENT, `shape` tinyint(3) unsigned NOT NULL , `id_color` tinyint(3) unsigned NOT NULL ', `reversefold` bit(1) NOT NULL DEFAULT b'0' , `x` decimal(6,3) unsigned NOT NULL , `y` decimal(6,3) unsigned NOT NULL DEFAULT '0.000', `typecut` varchar(10) NOT NULL, `cornershape` varchar(20) NOT NULL, `z` decimal(6,3) unsigned DEFAULT '0.000' , `othercornerradius` decimal(6,3) unsigned DEFAULT '0.000'', `skirt` decimal(5,3) unsigned NOT NULL DEFAULT '7.000', `foamTaper` varchar(3) NOT NULL, `foamDensity` decimal(2,1) unsigned NOT NULL , `straplocation` char(1) NOT NULL ', `straplength` decimal(6,3) unsigned NOT NULL, `strapinset` decimal(6,3) unsigned NOT NULL, `spayear` varchar(20) DEFAULT 'Not Specified', `spamake` varchar(20) DEFAULT 'Not Specified', `spabrand` varchar(20) DEFAULT 'Not Specified', PRIMARY KEY (`refno`) ) ENGINE=MyISAM AUTO_INCREMENT=143 DEFAULT CHARSET=latin1 $$ The the way covers are being inserted is by a stored procedure, which is the following: CREATE DEFINER=`root`@`%` PROCEDURE `putCover`( IN shape TINYINT, IN color TINYINT(3), IN reverse_fold BIT, IN x DECIMAL(6,3), IN y DECIMAL(6,3), IN type_cut VARCHAR(10), IN corner_shape VARCHAR(10), IN cutsize DECIMAL(6,3), IN corner_radius DECIMAL(6,3), IN skirt DECIMAL(5,3), IN foam_taper VARCHAR(7), IN foam_density DECIMAL(2,1), IN strap_location CHAR(1), IN strap_length DECIMAL(6,3), IN strap_inset DECIMAL(6,3) ) BEGIN INSERT INTO `dbre`.`cover_details` (`dbre`.`cover_details`.`shape`, `dbre`.`cover_details`.`id_color`, `dbre`.`cover_details`.`reversefold`, `dbre`.`cover_details`.`x`, `dbre`.`cover_details`.`y`, `dbre`.`cover_details`.`typecut`, `dbre`.`cover_details`.`cornershape`, `dbre`.`cover_details`.`z`, `dbre`.`cover_details`.`othercornerradius`, `dbre`.`cover_details`.`skirt`, `dbre`.`cover_details`.`foamTaper`, `dbre`.`cover_details`.`foamDensity`, `dbre`.`cover_details`.`strapLocation`, `dbre`.`cover_details`.`strapInset`, `dbre`.`cover_details`.`strapLength` ) VALUES (shape,color,reverse_fold, x,y,type_cut,corner_shape, cutsize,corner_radius,skirt,foam_taper,foam_density, strap_location,strap_inset,strap_length); END As you can see basically it just fills each field, now, the CoverDAO.create(CoverDTO cover) method which creates the cover is like so: public void create(CoverDTO cover) throws DAOException { Connection link = null; CallableStatement query = null; try { link = MySQL.getConnection(); link.setAutoCommit(false); query = link.prepareCall("{CALL putCover(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)}"); query.setLong(1,cover.getShape()); query.setInt(2,cover.getColor()); query.setBoolean(3, cover.getReverseFold()); query.setBigDecimal(4,cover.getX()); query.setBigDecimal(5,cover.getY()); query.setString(6,cover.getTypeCut()); query.setString(7,cover.getCornerShape()); query.setBigDecimal(8, cover.getZ()); query.setBigDecimal(9, cover.getCornerRadius()); query.setBigDecimal(10, cover.getSkirt()); query.setString(11, cover.getFoamTaper()); query.setBigDecimal(12, cover.getFoamDensity()); query.setString(13, cover.getStrapLocation()); query.setBigDecimal(14, cover.getStrapLength()); query.setBigDecimal(15, cover.getStrapInset()); query.executeUpdate(); link.commit(); } catch (SQLException e) { throw new DAOException(e); } finally { close(link, query); } } The CoverDTO is made of accessesor methods, the MySQL object basically returns the connection from a pool. Here is the pset Query with dummy but appropriate data: putCover(1,10,0,80.000,80.000,'F','Cut',0.000,0,15.000,'4x2',1.5,'A',10.000,5.000) As you can see everything is fine just when I write to the DB instead of 10 in the second parameter a 3 is written. I have done the following: Traced the id_color value to the create method, still got replaced by a 3 Hardcoded the value in the DAO create method, still got replaced by a 3 Called the procedure from the MySQL Workbench, it worked fined so I assume something is happening in the create method, any help is really appreciated.

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  • Perl MiniWebserver

    - by snikolov
    hey guys i have config this miniwebserver, however i require the server to download a file in the local directory i am getting a problem can you please fix my issue thanks !/usr/bin/perl use strict; use Socket; use IO::Socket; my $buffer; my $file; my $length; my $output; Simple web server in Perl Serves out .html files, echos form data sub parse_form { my $data = $_[0]; my %data; foreach (split /&/, $data) { my ($key, $val) = split /=/; $val =~ s/+/ /g; $val =~ s/%(..)/chr(hex($1))/eg; $data{$key} = $val;} return %data; } Setup and create socket my $port = shift; defined($port) or die "Usage: $0 portno\n"; my $DOCUMENT_ROOT = $ENV{'HOME'} . "public"; my $server = new IO::Socket::INET(Proto = 'tcp', LocalPort = $port, Listen = SOMAXCONN, Reuse = 1); $server or die "Unable to create server socket: $!" ; Await requests and handle them as they arrive while (my $client = $server-accept()) { $client-autoflush(1); my %request = (); my %data; { -------- Read Request --------------- local $/ = Socket::CRLF; while (<$client>) { chomp; # Main http request if (/\s*(\w+)\s*([^\s]+)\s*HTTP\/(\d.\d)/) { $request{METHOD} = uc $1; $request{URL} = $2; $request{HTTP_VERSION} = $3; } # Standard headers elsif (/:/) { (my $type, my $val) = split /:/, $_, 2; $type =~ s/^\s+//; foreach ($type, $val) { s/^\s+//; s/\s+$//; } $request{lc $type} = $val; } # POST data elsif (/^$/) { read($client, $request{CONTENT}, $request{'content-length'}) if defined $request{'content-length'}; last; } } } -------- SORT OUT METHOD --------------- if ($request{METHOD} eq 'GET') { if ($request{URL} =~ /(.*)\?(.*)/) { $request{URL} = $1; $request{CONTENT} = $2; %data = parse_form($request{CONTENT}); } else { %data = (); } $data{"_method"} = "GET"; } elsif ($request{METHOD} eq 'POST') { %data = parse_form($request{CONTENT}); $data{"_method"} = "POST"; } else { $data{"_method"} = "ERROR"; } ------- Serve file ---------------------- my $localfile = $DOCUMENT_ROOT.$request{URL}; Send Response if (open(FILE, "<$localfile")) { print $client "HTTP/1.0 200 OK", Socket::CRLF; print $client "Content-type: text/html", Socket::CRLF; print $client Socket::CRLF; my $buffer; while (read(FILE, $buffer, 4096)) { print $client $buffer; } $data{"_status"} = "200"; } else { $file = 'a.pl'; open(INFILE, $file); while (<INFILE>) { $output .= $_; ##output of the file } $length = length($output); print $client "'HTTP/1.0 200 OK", Socket::CRLF; print $client "Content-type: application/octet-stream", Socket::CRLF; print $client "Content-Length:".$length, Socket::CRLF; print $client "Accept-Ranges: bytes", Socket::CRLF; print $client 'Content-Disposition: attachment; filename="test.zip"', Socket::CRLF; print $client $output, Socket::CRLF; print $client 'Content-Transfer-Encoding: binary"', Socket::CRLF; print $client "Connection: Keep-Alive", Socket::CRLF; # #$data{"_status"} = "404"; # } close(FILE); Log Request print ($DOCUMENT_ROOT.$request{URL},"\n"); foreach (keys(%data)) { print (" $_ = $data{$_}\n"); } ----------- Close Connection and loop ------------------ close $client; } END

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  • Broken Multithreading With Core Data

    - by spamguy
    This is a better-focused version of an earlier question that touches upon an entirely different subject from before. I am working on a Cocoa Core Data application with multiple threads. There is a Song and Artist; every Song has an Artist relation. There is a delegate code file not cited here; it more or less looks like the template XCode generates. I am far better working with the former technology than the latter, and any multithreading capability came from a Core Data template. When I'm doing all my ManagedObjectContext work in one method, I am fine. When I put fetch-or-insert-then-return-object work into a separate method, the application halts (but does not crash) at the new method's return statement, seen below. The new method even gets its own MOC to be safe, and it has not helped any. The result is one addition to Song and a halt after generating an Artist. I get no errors or exceptions, and I don't know why. I've debugged out the wazoo. My theory is that any errors occurring are in another thread, and the one I'm watching is waiting on something forever. What did I do wrong with getArtistObject: , and how can I fix it? Thanks. - (void)main { NSInteger songCount = 1; NSManagedObjectContext *moc = [[NSManagedObjectContext alloc] init]; [moc setPersistentStoreCoordinator:[[self delegate] persistentStoreCoordinator]]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(contextDidSave:) name:NSManagedObjectContextDidSaveNotification object:moc]; /* songDict generated here */ for (id key in songDict) { NSManagedObject *song = [NSEntityDescription insertNewObjectForEntityForName:@"Song" inManagedObjectContext:moc]; [song setValue:[songDictItem objectForKey:@"Name"] forKey:@"title"]; [song setValue:[self getArtistObject:(NSString *) [songDictItem objectForKey:@"Artist"]] forKey:@"artist"]; [songDictItem release]; songCount++; } NSError *error; if (![moc save:&error]) [NSApp presentError:error]; [[NSNotificationCenter defaultCenter] removeObserver:self name:NSManagedObjectContextDidSaveNotification object:moc]; [moc release], moc = nil; [[self delegate] importDone]; } - (NSManagedObject*) getArtistObject:(NSString*)theArtist { NSError *error = nil; NSManagedObjectContext *moc = [[NSManagedObjectContext alloc] init]; [moc setPersistentStoreCoordinator:[[self delegate] persistentStoreCoordinator]]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(contextDidSave:) name:NSManagedObjectContextDidSaveNotification object:moc]; NSFetchRequest *fetch = [[[NSFetchRequest alloc] init] autorelease]; NSEntityDescription *entityDescription = [NSEntityDescription entityForName:@"Artist" inManagedObjectContext:moc]; [fetch setEntity:entityDescription]; // object to be returned NSManagedObject *artistObject = [[NSManagedObject alloc] initWithEntity:entityDescription insertIntoManagedObjectContext:moc]; // set predicate (artist name) NSPredicate *pred = [NSPredicate predicateWithFormat:[NSString stringWithFormat:@"name = \"%@\"", theArtist]]; [fetch setPredicate:pred]; NSArray *response = [moc executeFetchRequest:fetch error:&error]; if (error) [NSApp presentError:error]; if ([response count] == 0) // empty resultset --> no artists with this name { [artistObject setValue:theArtist forKey:@"name"]; NSLog(@"%@ not found. Adding.", theArtist); return artistObject; } else return [response objectAtIndex:0]; } @end

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  • CDI @Conversation not propagated with handleNavigation()

    - by Thomas Kernstock
    I have a problem with the propagation of a long runnig conversation when I redirect the view by the handleNavigation() method. Here is my test code: I have a conversationscoped bean and two views: conversationStart.xhtml is called in Browser with URL http://localhost/tests/conversationStart.jsf?paramTestId=ParameterInUrl <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core"> <f:metadata> <f:viewParam name="paramTestId" value="#{conversationTest.fieldTestId}" /> <f:event type="preRenderView" listener="#{conversationTest.preRenderView}" /> </f:metadata> <h:head> <title>Conversation Test</title> </h:head> <h:body> <h:form> <h2>Startpage Test Conversation with Redirect</h2> <h:messages /> <h:outputText value="Testparameter: #{conversationTest.fieldTestId}"/><br /> <h:outputText value="Logged In: #{conversationTest.loggedIn}"/><br /> <h:outputText value="Conversation ID: #{conversationTest.convID}"/><br /> <h:outputText value="Conversation Transient: #{conversationTest.convTransient}"/><br /> <h:commandButton action="#{conversationTest.startLogin}" value="Login ->" rendered="#{conversationTest.loggedIn==false}" /><br /> <h:commandLink action="/tests/conversationLogin.xhtml?faces-redirect=true" value="Login ->" rendered="#{conversationTest.loggedIn==false}" /><br /> </h:form> <h:link outcome="/tests/conversationLogin.xhtml" value="Login Link" rendered="#{conversationTest.loggedIn==false}"> <f:param name="cid" value="#{conversationTest.convID}"></f:param> </h:link> </h:body> </html> The Parameter is written to the beanfield and displayed in the view correctly. There are 3 different possibilites to navigate to the next View. All 3 work fine. The beanfield shows up the next view (conversationLogin.xhtml) too: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core"> <h:head> <title>Conversation Test</title> </h:head> <h:body> <h:form> <h2>Loginpage Test Conversation with Redirect</h2> <h:messages /> <h:outputText value="Testparameter: #{conversationTest.fieldTestId}"/><br /> <h:outputText value="Logged In: #{conversationTest.loggedIn}"/><br /> <h:outputText value="Conversation ID: #{conversationTest.convID}"/><br /> <h:outputText value="Conversation Transient: #{conversationTest.convTransient}"/><br /> <h:commandButton action="#{conversationTest.login}" value="Login And Return" /><br /> </h:form> </h:body> </html> When I return to the Startpage by clicking the button the conversation bean still contains all values. So everything is fine. Here is the bean: package test; import java.io.Serializable; import javax.annotation.PostConstruct; import javax.enterprise.context.Conversation; import javax.enterprise.context.ConversationScoped; import javax.faces.event.ComponentSystemEvent; import javax.inject.Inject; import javax.inject.Named; @Named @ConversationScoped public class ConversationTest implements Serializable{ private static final long serialVersionUID = 1L; final String CONVERSATION_NAME="longRun"; @Inject Conversation conversation; private boolean loggedIn; private String fieldTestId; @PostConstruct public void init(){ if(conversation.isTransient()){ conversation.begin(CONVERSATION_NAME); System.out.println("New Conversation started"); } loggedIn=false; } public String getConvID(){ return conversation.getId(); } public boolean isConvTransient(){ return conversation.isTransient(); } public boolean getLoggedIn(){ return loggedIn; } public String startLogin(){ return "/tests/conversationLogin.xhtml?faces-redirect=true"; } public String login(){ loggedIn=true; return "/tests/conversationStart.xhtml?faces-redirect=true"; } public void preRenderView(ComponentSystemEvent ev) { // if(!loggedIn){ // System.out.println("Will redirect to Login"); // FacesContext ctx = FacesContext.getCurrentInstance(); // ctx.getApplication().getNavigationHandler().handleNavigation(ctx, null, "/tests/conversationLogin.xhtml?faces-redirect=true"); // ctx.renderResponse(); // } } public void setFieldTestId(String fieldTestId) { System.out.println("fieldTestID was set to: "+fieldTestId); this.fieldTestId = fieldTestId; } public String getFieldTestId() { return fieldTestId; } } Now comes the problem !! As soon as I try to redirect the page in the preRenderView method of the bean (just uncomment the code in the method), using handleNavigation() the bean is created again in the next view instead of using the allready created instance. Although the cid parameter is propagated to the next view ! Has anybody an idea what's wrong ? best regards Thomas

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  • Java Box Class: Unsolvable: aligning components to the left or right

    - by user323186
    I have been trying to left align buttons contained in a Box to the left, with no success. They align left alright, but for some reason dont shift all the way left as one would imagine. I attach the code below. Please try compiling it and see for yourself. Seems bizarre to me. Thanks, Eric import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import javax.swing.Box; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JScrollPane; import javax.swing.JTextArea; public class MainGUI extends Box implements ActionListener{ //Create GUI Components Box centerGUI=new Box(BoxLayout.X_AXIS); Box bottomGUI=new Box(BoxLayout.X_AXIS); //centerGUI subcomponents JTextArea left=new JTextArea(), right=new JTextArea(); JScrollPane leftScrollPane = new JScrollPane(left), rightScrollPane = new JScrollPane(right); //bottomGUI subcomponents JButton encrypt=new JButton("Encrypt"), decrypt=new JButton("Decrypt"), close=new JButton("Close"), info=new JButton("Info"); //Create Menubar components JMenuBar menubar=new JMenuBar(); JMenu fileMenu=new JMenu("File"); JMenuItem open=new JMenuItem("Open"), save=new JMenuItem("Save"), exit=new JMenuItem("Exit"); int returnVal =0; public MainGUI(){ super(BoxLayout.Y_AXIS); initCenterGUI(); initBottomGUI(); initFileMenu(); add(centerGUI); add(bottomGUI); addActionListeners(); } private void addActionListeners() { open.addActionListener(this); save.addActionListener(this); exit.addActionListener(this); encrypt.addActionListener(this); decrypt.addActionListener(this); close.addActionListener(this); info.addActionListener(this); } private void initFileMenu() { fileMenu.add(open); fileMenu.add(save); fileMenu.add(exit); menubar.add(fileMenu); } public void initCenterGUI(){ centerGUI.add(leftScrollPane); centerGUI.add(rightScrollPane); } public void initBottomGUI(){ bottomGUI.setAlignmentX(LEFT_ALIGNMENT); //setBorder(BorderFactory.createLineBorder(Color.BLACK)); bottomGUI.add(encrypt); bottomGUI.add(decrypt); bottomGUI.add(close); bottomGUI.add(info); } @Override public void actionPerformed(ActionEvent arg0) { // find source of the action Object source=arg0.getSource(); //if action is of such a type do the corresponding action if(source==close){ kill(); } else if(source==open){ //CHOOSE FILE File file1 =chooseFile(); String input1=readToString(file1); System.out.println(input1); left.setText(input1); } else if(source==decrypt){ //decrypt everything in Right Panel and output in left panel decrypt(); } else if(source==encrypt){ //encrypt everything in left panel and output in right panel encrypt(); } else if(source==info){ //show contents of info file in right panel doInfo(); } else { System.out.println("Error"); //throw new UnimplementedActionException(); } } private void doInfo() { // TODO Auto-generated method stub } private void encrypt() { // TODO Auto-generated method stub } private void decrypt() { // TODO Auto-generated method stub } private String readToString(File file) { FileReader fr = null; try { fr = new FileReader(file); } catch (FileNotFoundException e1) { e1.printStackTrace(); } BufferedReader br=new BufferedReader(fr); String line = null; try { line = br.readLine(); } catch (IOException e) { e.printStackTrace(); } String input=""; while(line!=null){ input=input+"\n"+line; try { line=br.readLine(); } catch (IOException e) { e.printStackTrace(); } } return input; } private File chooseFile() { //Create a file chooser final JFileChooser fc = new JFileChooser(); returnVal = fc.showOpenDialog(fc); return fc.getSelectedFile(); } private void kill() { System.exit(0); } public static void main(String[] args) { // TODO Auto-generated method stub MainGUI test=new MainGUI(); JFrame f=new JFrame("Tester"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setJMenuBar(test.menubar); f.setPreferredSize(new Dimension(600,400)); //f.setUndecorated(true); f.add(test); f.pack(); f.setVisible(true); } }

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  • How to draw complex shape from code behind for custom control in resource dictionary

    - by HopelessCoder
    Hi I am new to wpf and am having a problem which may or may not be trivial. I have defined a custom control as follows in the resource dictionary: <ResourceDictionary x:Class="SyringeSlider.Themes.Generic" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:SyringeSlider"> <Style TargetType="{x:Type local:CustomControl1}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type local:CustomControl1}"> <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"> <Canvas Height="{TemplateBinding Height}" Width="{TemplateBinding Width}" Name="syringeCanvas"> </Canvas> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style> </ResourceDictionary> Unfortunately I cannot go beyond this because I would like to draw a geometry onto the canvas consisting of a set of multiple line geometries whose dimensions are calculated as a function of the space available in the canvas. I believe that I need a code behind method to do this, but have not been able to determine how to link the xaml definition to a code behind method. Note that I have set up a class x:Class="SyringeSlider.Themes.Generic" for specifically this purpose, but can't figure out which Canvas property to link the drawing method to. My drawing method looks like this private void CalculateSyringe() { int adjHeight = (int) Height - 1; int adjWidth = (int) Width - 1; // Calculate some very useful values based on the chart above. int borderOffset = (int)Math.Floor(m_borderWidth / 2.0f); int flangeLength = (int)(adjHeight * .05f); int barrelLeftCol = (int)(adjWidth * .10f); int barrelLength = (int)(adjHeight * .80); int barrelRightCol = adjWidth - barrelLeftCol; int coneLength = (int)(adjHeight * .10); int tipLeftCol = (int)(adjWidth * .45); int tipRightCol = adjWidth - tipLeftCol; int tipBotCol = adjWidth - borderOffset; Path mySyringePath = new Path(); PathGeometry mySyringeGeometry = new PathGeometry(); PathFigure mySyringeFigure = new PathFigure(); mySyringeFigure.StartPoint = new Point(0, 0); Point pointA = new Point(0, flangeLength); mySyringeFigure.Segments.Add(new LineSegment(pointA, true)); Point pointB = new Point(); pointB.Y = pointA.Y + barrelLength; pointB.X = 0; mySyringeFigure.Segments.Add(new LineSegment(pointB, true)); // You get the idea....Add more points in this way mySyringeGeometry.Figures.Add(mySyringeFigure); mySyringePath.Data = mySyringeGeometry; } SO my question is: 1) Does what I am trying to do make any sense? 2) Can a use a canvas for this purpose? If not, what are my other options? Thanks!

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  • why it throws index out of bounds exception??

    - by Johanna
    Hi I want to use merge sort for sorting my doubly linked list.I have created 3 classes(Node,DoublyLinkedList,MergeSort) but it will throw this exception for these lines: 1.in the getNodes method of DoublyLinkedList---> throw new IndexOutOfBoundsException(); 2.in the add method of DoublyLinkedList-----> Node cursor = getNodes(index); 3.in the sort method of MergeSort class------> listTwo.add(x,localDoublyLinkedList.getValue(x)); 4.in the main method of DoublyLinkedList----->merge.sort(); this is my Merge class:(I put the whole code for this class for beter understanding) public class MergeSort { private DoublyLinkedList localDoublyLinkedList; public MergeSort(DoublyLinkedList list) { localDoublyLinkedList = list; } public void sort() { if (localDoublyLinkedList.size() <= 1) { return; } DoublyLinkedList listOne = new DoublyLinkedList(); DoublyLinkedList listTwo = new DoublyLinkedList(); for (int x = 0; x < (localDoublyLinkedList.size() / 2); x++) { listOne.add(x, localDoublyLinkedList.getValue(x)); } for (int x = (localDoublyLinkedList.size() / 2) + 1; x < localDoublyLinkedList.size(); x++) { listTwo.add(x, localDoublyLinkedList.getValue(x)); } //Split the DoublyLinkedList again MergeSort sort1 = new MergeSort(listOne); MergeSort sort2 = new MergeSort(listTwo); sort1.sort(); sort2.sort(); merge(listOne, listTwo); } public void merge(DoublyLinkedList a, DoublyLinkedList b) { int x = 0; int y = 0; int z = 0; while (x < a.size() && y < b.size()) { if (a.getValue(x) < b.getValue(y)) { localDoublyLinkedList.add(z, a.getValue(x)); x++; } else { localDoublyLinkedList.add(z, b.getValue(y)); y++; } z++; } //copy remaining elements to the tail of a[]; for (int i = x; i < a.size(); i++) { localDoublyLinkedList.add(z, a.getValue(i)); z++; } for (int i = y; i < b.size(); i++) { localDoublyLinkedList.add(z, b.getValue(i)); z++; } } } and just a part of my DoublyLinkedList: private Node getNodes(int index) throws IndexOutOfBoundsException { if (index < 0 || index > length) { throw new IndexOutOfBoundsException(); } else { Node cursor = head; for (int i = 0; i < index; i++) { cursor = cursor.getNext(); } return cursor; } } public void add(int index, int value) throws IndexOutOfBoundsException { Node cursor = getNodes(index); Node temp = new Node(value); temp.setPrev(cursor); temp.setNext(cursor.getNext()); cursor.getNext().setPrev(temp); cursor.setNext(temp); length++; } public static void main(String[] args) { int i = 0; i = getRandomNumber(10, 10000); DoublyLinkedList list = new DoublyLinkedList(); for (int j = 0; j < i; j++) { list.add(j, getRandomNumber(10, 10000)); MergeSort merge = new MergeSort(list); merge.sort(); System.out.println(list.getValue(j)); } } PLEASE help me thanks alot.

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  • AIDL based two way communication

    - by sshasan
    I have two apps between which I want some data exchanged. As they are running in different processes, so, I am using AIDL to communicate between them. Now, everything is happening really great in one direction (say my apps are A and B) i.e. data is being sent from A to B but, now I need to send some data from B to A. I noticed that we need to include the app with the AIDL in the build path of app where the AIDL method will be called. So in my case A includes B in its build path. For B to be able to send something to A, by that logic, B would need A in its build path. This would create a cycle. I am stuck at this point. And I cannot think of a work around this loop. Any help would be greatly appreciated :) . Thanks! ----EDIT---- So, I following the advice mentioned in one of the comments below, I have the following code In the IPCAIDL project the AIDL file resides, its contents are package ipc.android.aidl; interface Iaidl{ boolean pushBoolean(boolean flag); } This project is being used as a library in both the IPCServer and the IPC Client. The IPCServer Project has the service which defines what happens with the AIDL method. The file is booleanService.java package ipc.android.server; import ipc.android.aidl.Iaidl; import android.app.Service; import android.content.Intent; import android.os.IBinder; import android.os.RemoteException; import android.util.Log; public class booleanService extends Service { @Override public IBinder onBind(Intent intent) { return new Iaidl.Stub() { @Override public boolean pushBoolean(boolean arg0) throws RemoteException { Log.i("SERVER(IPC AIDL)", "Truth Value:"+arg0); return arg0; } }; } } The IPCClient file which calls this method is package ipc.android.client2; import ipc.android.aidl.Iaidl; import android.app.Activity; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.os.Bundle; import android.os.IBinder; import android.os.RemoteException; import android.view.View; import android.widget.Button; public class IPCClient2Activity extends Activity { Button b1; Iaidl iAIDL; boolean k = false; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); bindService(new Intent("ipc.android.server.booleanService"), conn, Context.BIND_AUTO_CREATE); startService(new Intent("ipc.android.server.booleanService")); b1 = (Button) findViewById(R.id.button1); b1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if(k){ k = false; } else{ k = true; } try { iAIDL.pushBoolean(k); } catch (RemoteException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }); } private ServiceConnection conn = new ServiceConnection() { @Override public void onServiceDisconnected(ComponentName name) { // TODO Auto-generated method stub } @Override public void onServiceConnected(ComponentName name, IBinder service) { iAIDL = Iaidl.Stub.asInterface(service); } }; } The manifest file for IPCServer includes the declaration of the service.

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  • Severe Tomcat crash has me stumped

    - by Eric Banderhide
    I'm pretty used to crashing my tomcat server. But I don't think I made any changes at all and seem to have broken it completely. Was working one min then not the next. I really hope someone can help here is the Catalina.out: Dec 20, 2012 1:35:56 AM org.apache.catalina.startup.Embedded initDirs SEVERE: Cannot find specified temporary folder at Dec 20, 2012 1:35:57 AM org.apache.catalina.core.AprLifecycleListener init INFO: Loaded APR based Apache Tomcat Native library 1.1.23. Dec 20, 2012 1:35:57 AM org.apache.catalina.core.AprLifecycleListener init INFO: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. Dec 20, 2012 1:35:57 AM org.apache.coyote.http11.Http11AprProtocol init INFO: Initializing Coyote HTTP/1.1 on http-8040 Dec 20, 2012 1:35:57 AM org.apache.coyote.ajp.AjpAprProtocol init INFO: Initializing Coyote AJP/1.3 on ajp-8042 Dec 20, 2012 1:35:57 AM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 587 ms Dec 20, 2012 1:35:57 AM org.apache.catalina.core.StandardService start INFO: Starting service Catalina Dec 20, 2012 1:35:57 AM org.apache.catalina.core.StandardEngine start INFO: Starting Servlet Engine: Apache Tomcat/6.0.33 Dec 20, 2012 1:35:57 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory docs Dec 20, 2012 1:35:57 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory ROOT Dec 20, 2012 1:35:57 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory myApp Dec 20, 2012 1:35:57 AM org.apache.catalina.loader.WebappClassLoader validateJarFile INFO: validateJarFile(/lhome/me/tomcat6/webapps/myApp/WEB-INF/lib/javax.servlet.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class Dec 20, 2012 1:35:58 AM org.apache.coyote.http11.Http11AprProtocol start INFO: Starting Coyote HTTP/1.1 on http-8040 Dec 20, 2012 1:35:58 AM org.apache.coyote.ajp.AjpAprProtocol start INFO: Starting Coyote AJP/1.3 on ajp-8042 Dec 20, 2012 1:35:58 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 880 ms Error Reading TLE line 1: java.lang.Exception: TLE line 1 not valid first line Error Creating SGP4 Satellite Dec 20, 2012 1:36:26 AM org.apache.coyote.http11.Http11AprProtocol pause INFO: Pausing Coyote HTTP/1.1 on http-8040 Dec 20, 2012 1:36:26 AM org.apache.coyote.ajp.AjpAprProtocol pause INFO: Pausing Coyote AJP/1.3 on ajp-8042 Dec 20, 2012 1:36:27 AM org.apache.catalina.core.StandardService stop INFO: Stopping service Catalina Dec 20, 2012 1:36:30 AM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc SEVERE: The web application [/myApp] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered. Dec 20, 2012 1:36:30 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads SEVERE: The web application [/myApp] is still processing a request that has yet to finish. This is very likely to create a memory leak. You can control the time allowed for requests to finish by using the unloadDelay attribute of the standard Context implementation. Dec 20, 2012 1:36:30 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads SEVERE: The web application [/myApp] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak. Dec 20, 2012 1:36:30 AM org.apache.coyote.http11.Http11AprProtocol destroy INFO: Stopping Coyote HTTP/1.1 on http-8040 Dec 20, 2012 1:36:30 AM org.apache.coyote.ajp.AjpAprProtocol destroy INFO: Stopping Coyote AJP/1.3 on ajp-8042 Dec 20, 2012 1:37:12 AM org.apache.catalina.startup.Catalina stopServer SEVERE: Catalina.stop: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391) at java.net.Socket.connect(Socket.java:579) at java.net.Socket.connect(Socket.java:528) at java.net.Socket.<init>(Socket.java:425) at java.net.Socket.<init>(Socket.java:208) at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:422) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:338) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:416) And I have a new log that has been created, I've never seen it before but it seems to think its something severe. A long one but here it is: Massive Error Log I've never seen before

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  • NullReferenceException makes me want to shoot myself

    - by rockinthesixstring
    Ok, so once upon a time, my code worked. Since then I did some refactoring (basic stuff so I thought) but now I'm getting a null reference exception, and I can't bloody well figure out why. Here's where it starts. note, this is the logout method, but all of my ActivityLogs sections are throwing this error Function LogOut(ByVal go As String) As ActionResult ActivityLogService.AddActivity(AuthenticationHelper.RetrieveAuthUser.ID, _ IActivityLogService.LogType.UserLogout, _ HttpContext.Request.UserHostAddress) ActivityLogService.SubmitChanges() ''# more stuff happens after this End Function The service is pretty straight forward (notice the ERROR THROWN HERE) Public Sub AddActivity(ByVal userid As Integer, ByVal activity As Integer, ByVal ip As String) Implements IActivityLogService.AddActivity Dim _activity As ActivityLog = New ActivityLog With {.Activity = activity, .UserID = userid, .UserIP = ip.IPAddressToNumber, .ActivityDate = DateTime.UtcNow} ActivityLogRepository.Create(_activity) ''#ERROR THROWN HERE End Sub And the Interface that the Service uses looks like this Public Interface IActivityLogService Sub AddActivity(ByVal userid As Integer, ByVal activity As Integer, ByVal ip As String) Function GetUsersLastActivity(ByVal UserID As Integer) As ActivityLog Sub SubmitChanges() ''' <summary> ''' The type of activity done by the user ''' </summary> ''' <remarks>Each int refers to an activity. ''' There can be no duplicates or modifications ''' after this application goes live</remarks> Enum LogType As Integer ''' <summary> ''' A new session started ''' </summary> SessionStarted = 1 ''' <summary> ''' A new user is Added/Created ''' </summary> UserAdded = 2 ''' <summary> ''' User has updated their profile ''' </summary> UserUpdated = 3 ''' <summary> ''' User has logged into they system ''' </summary> UserLogin = 4 ''' <summary> ''' User has logged out of the system ''' </summary> UserLogout = 5 ''' <summary> ''' A new event has been added ''' </summary> EventAdded = 6 ''' <summary> ''' An event has been updated ''' </summary> EventUpdated = 7 ''' <summary> ''' An event has been deleted ''' </summary> EventDeleted = 8 ''' <summary> ''' An event has received a Up/Down vote ''' </summary> EventVoted = 9 ''' <summary> ''' An event has been closed ''' </summary> EventCloseVoted = 10 ''' <summary> ''' A comment has been added to an event ''' </summary> CommentAdded = 11 ''' <summary> ''' A comment has been updated ''' </summary> CommentUpdated = 12 ''' <summary> ''' A comment has been deleted ''' </summary> CommentDeleted = 13 ''' <summary> ''' An event or comment has been reported as spam ''' </summary> SpamReported = 14 End Enum End Interface And the repository is equally straight forward Public Sub Create(ByVal activity As ActivityLog) Implements IActivityLogRepository.Create dc.ActivityLogs.InsertOnSubmit(activity) End Sub The stack trace is as follows [NullReferenceException: Object reference not set to an instance of an object.] MyApp.Core.Domain.ActivityLogService.AddActivity(Int32 userid, Int32 activity, String ip) in E:\Projects\MyApp\MyApp.Core\Domain\Services\ActivityLogService.vb:49 MyApp.Core.Controllers.UsersController.Authenticate(String go) in E:\Projects\MyApp\MyApp.Core\Controllers\UsersController.vb:258 lambda_method(Closure , ControllerBase , Object[] ) +163 System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +51 System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary2 parameters) +409 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary2 parameters) +52 System.Web.Mvc.<c_DisplayClass15.b_12() +127 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func1 continuation) +436 System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +61 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList1 filters, ActionDescriptor actionDescriptor, IDictionary2 parameters) +305 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +830 System.Web.Mvc.Controller.ExecuteCore() +136 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +232 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +39 System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +68 System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +44 System.Web.Mvc.Async.<>c__DisplayClass81.b__7(IAsyncResult ) +42 System.Web.Mvc.Async.WrappedAsyncResult`1.End() +141 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +54 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40 System.Web.Mvc.<c_DisplayClasse.b_d() +61 System.Web.Mvc.SecurityUtil.b_0(Action f) +31 System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +56 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +110 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +690 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +194 here's an image of the error when attached to the debugger. And here's an image of the DB schema in question Can anyone shed some light on what I might be missing here?

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  • A column ID occurred more than once in the specification

    - by Puzzle84
    Recently i've picked up my EF 4.1 / MVC 3 project again and started building in actual frontend capabilities. Now i'm developing a "simple" message system but upon going to that page i get the error as stated in the title EDIT It creates the database just not the models. Stack trace: [NullReferenceException: Object reference not set to an instance of an object.] ASP._Page_Views_Inbox_Index_cshtml.Execute() in c:\Development\MVC\DOCCL\Views\Inbox\Index.cshtml:18 System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +197 System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +81 System.Web.WebPages.StartPage.RunPage() +17 System.Web.WebPages.StartPage.ExecutePageHierarchy() +62 System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +76 System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +222 System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +115 System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +295 System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13 System.Web.Mvc.<c_DisplayClass1c.b_19() +23 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func1 continuation) +242 System.Web.Mvc.<>c__DisplayClass1e.<InvokeActionResultWithFilters>b__1b() +21 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList1 filters, ActionResult actionResult) +177 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +324 System.Web.Mvc.Controller.ExecuteCore() +106 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +91 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10 System.Web.Mvc.<c_DisplayClassb.b_5() +34 System.Web.Mvc.Async.<c_DisplayClass1.b_0() +19 System.Web.Mvc.Async.<c_DisplayClass81.<BeginSynchronous>b__7(IAsyncResult _) +10 System.Web.Mvc.Async.WrappedAsyncResult1.End() +62 System.Web.Mvc.<c_DisplayClasse.b_d() +48 System.Web.Mvc.SecurityUtil.b_0(Action f) +7 System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9478661 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +178 InnerException : {"A column ID occurred more than once in the specification."} The recently added code is. Controller: // // GET: /Inbox/Index/5/1 public ActionResult Index(int? Id, int Page = 1) { try { const int pageSize = 10; var messages = from m in horseTracker.Messages where m.ReceiverId.Equals(Id) select m; var paginatedMessages = new PaginatedList<Message>(messages, Page, pageSize); return View(paginatedMessages); } catch (Exception ex) { } return View(); } Models public class Message { [Key] public int Id { get; set; } [Required(ErrorMessage = "Subject is required")] [Display(Name = "Subject")] public string Subject { get; set; } [Required(ErrorMessage = "Message is required")] [Display(Name = "Message")] public string Content { get; set; } [Required] [Display(Name = "Date")] public DateTime Created { get; set; } public Boolean Read { get; set; } [Required(ErrorMessage = "Can't create a message without a user")] public int SenderId { get; set; } public virtual User Sender { get; set; } [Required(ErrorMessage = "Please pick a recipient")] public int ReceiverId { get; set; } public virtual User Receiver { get; set; } } public class User { [Key] public int Id { get; set; } [Required] [Display(Name = "Username")] public string UserName { get; set; } [Required] [Display(Name = "First Name")] public string FirstName { get; set; } [Required] [Display(Name = "Last Name")] public string LastName { get; set; } [Required] [Display(Name = "E-Mail")] public string Email { get; set; } [Required] [Display(Name = "Password")] public string Password { get; set; } [Required] [Display(Name = "Country")] public string Country { get; set; } public string EMail { get; set; } //Races public virtual ICollection<Message> Messages { get; set; } } modelBuilder.Entity<User>() .HasMany(u => u.Messages) .WithRequired(m => m.Receiver) .HasForeignKey(m => m.ReceiverId) .WillCascadeOnDelete(false); Anyone have a clue on why i might be getting that error? Before i added these classes it was working fine.

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  • nginx bad gateway 502 with mono fastcgi

    - by Bradley Lederholz Leatherwood
    Hello so I have been trying to get my website to run on mono (on ubuntu server) and I have followed these tutorials almost to the letter: However when my directory is not blank fastcgi logs reveal this: Notice Beginning to receive records on connection. Error Failed to process connection. Reason: Exception has been thrown by the target of an invocation. I am not really sure what this means, and depending on what I do I can get another error that tells me the resource cannot be found: The resource cannot be found. Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly. Requested URL: /Default.aspx/ Version information: Mono Runtime Version: 2.10.8 (tarball Thu Aug 16 23:46:03 UTC 2012) ASP.NET Version: 4.0.30319.1 If I should provide some more information please let me know. Edit: I am now getting a nginx gateway error. My nginx configuration file looks like this: server { listen 2194; server_name localhost; access_log $HOME/WWW/nginx.log; location / { root $HOME/WWW/dev/; index index.html index.html default.aspx Default.aspx Index.cshtml; fastcgi_index Views/Home/; fastcgi_pass 127.0.0.1:8000; include /etc/nginx/fastcgi_params; } } Running the entire thing with xsp4 I have discovered what the "Exception has been thrown by the target of an invocation." Handling exception type TargetInvocationException Message is Exception has been thrown by the target of an invocation. IsTerminating is set to True System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. Server stack trace: at System.Reflection.MonoCMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in :0 at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in :0 at System.Runtime.Serialization.ObjectRecord.LoadData (System.Runtime.Serialization.ObjectManager manager, ISurrogateSelector selector, StreamingContext context) [0x00000] in :0 at System.Runtime.Serialization.ObjectManager.DoFixups () [0x00000] in :0 at System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadNextObject (System.IO.BinaryReader reader) [0x00000] in :0 at System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadObjectGraph (BinaryElement elem, System.IO.BinaryReader reader, Boolean readHeaders, System.Object& result, System.Runtime.Remoting.Messaging.Header[]& headers) [0x00000] in :0 at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.NoCheckDeserialize (System.IO.Stream serializationStream, System.Runtime.Remoting.Messaging.HeaderHandler handler) [0x00000] in :0 at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize (System.IO.Stream serializationStream) [0x00000] in :0 at System.Runtime.Remoting.RemotingServices.DeserializeCallData (System.Byte[] array) [0x00000] in :0 at (wrapper xdomain-dispatch) System.AppDomain:DoCallBack (object,byte[]&,byte[]&) Exception rethrown at [0]: --- System.ArgumentException: Couldn't bind to method 'SetHostingEnvironment'. at System.Delegate.GetCandidateMethod (System.Type type, System.Type target, System.String method, BindingFlags bflags, Boolean ignoreCase, Boolean throwOnBindFailure) [0x00000] in :0 at System.Delegate.CreateDelegate (System.Type type, System.Type target, System.String method, Boolean ignoreCase, Boolean throwOnBindFailure) [0x00000] in :0 at System.Delegate.CreateDelegate (System.Type type, System.Type target, System.String method) [0x00000] in :0 at System.DelegateSerializationHolder+DelegateEntry.DeserializeDelegate (System.Runtime.Serialization.SerializationInfo info) [0x00000] in :0 at System.DelegateSerializationHolder..ctor (System.Runtime.Serialization.SerializationInfo info, StreamingContext ctx) [0x00000] in :0 at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&) at System.Reflection.MonoCMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in :0 --- End of inner exception stack trace --- at (wrapper xdomain-invoke) System.AppDomain:DoCallBack (System.CrossAppDomainDelegate) at (wrapper remoting-invoke-with-check) System.AppDomain:DoCallBack (System.CrossAppDomainDelegate) at System.Web.Hosting.ApplicationHost.CreateApplicationHost (System.Type hostType, System.String virtualDir, System.String physicalDir) [0x00000] in :0 at Mono.WebServer.VPathToHost.CreateHost (Mono.WebServer.ApplicationServer server, Mono.WebServer.WebSource webSource) [0x00000] in :0 at Mono.WebServer.XSP.Server.RealMain (System.String[] args, Boolean root, IApplicationHost ext_apphost, Boolean quiet) [0x00000] in :0 at Mono.WebServer.XSP.Server.Main (System.String[] args) [0x00000] in :0

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  • Linked Lists in Java - Help with assignment

    - by doron2010
    I have been trying to solve this assignment all day, please help me. I'm completely lost. Representation of a string in linked lists In every intersection in the list there will be 3 fields : The letter itself. The number of times it appears consecutively. A pointer to the next intersection in the list. The following class CharNode represents a intersection in the list : public class CharNode { private char _data; private int _value; private charNode _next; public CharNode (char c, int val, charNode n) { _data = c; _value = val; _next = n; } public charNode getNext() { return _next; } public void setNext (charNode node) { _next = node; } public int getValue() { return _value; } public void setValue (int v) { value = v; } public char getData() { return _data; } public void setData (char c) { _data = c; } } The class StringList represents the whole list : public class StringList { private charNode _head; public StringList() { _head = null; } public StringList (CharNode node) { _head = node; } } Add methods to the class StringList according to the details : (Pay attention, these are methods from the class String and we want to fulfill them by the representation of a string by a list as explained above) public char charAt (int i) - returns the char in the place i in the string. Assume that the value of i is in the right range. public StringList concat (String str) - returns a string that consists of the string that it is operated on and in its end the string "str" is concatenated. public int indexOf (int ch) - returns the index in the string it is operated on of the first appeareance of the char "ch". If the char "ch" doesn't appear in the string, returns -1. If the value of fromIndex isn't in the range, returns -1. public int indexOf (int ch, int fromIndex) - returns the index in the string it is operated on of the first appeareance of the char "ch", as the search begins in the index "fromIndex". If the char "ch" doesn't appear in the string, returns -1. public boolean equals (String str) - returns true if the string that it is operated on is equal to the string str. Otherwise returns false. This method must be written in recursion, without using loops at all. public int compareTo (String str) - compares between the string that the method is operated on to the string "str" that is in the parameter. The method returns 0 if the strings are equal. If the string in the object is smaller lexicographic from the string "str" in the paramater, a negative number will be returned. And if the string in the object is bigger lexicographic from the string "str", a positive number will be returned. public StringList substring (int i) - returns the list of the substring that starts in the place i in the string on which it operates. Meaning, the sub-string from the place i until the end of the string. Assume the value of i is in the right range. public StringList substring (int i, int j) - returns the list of the substring that begins in the place i and ends in the place j (not included) in the string it operates on. Assume the values of i, j are in the right range. public int length() - will return the length of the string on which it operates. Pay attention to all the possible error cases. Write what is the time complexity and space complexity of every method that you wrote. Make sure the methods you wrote are effective. It is NOT allowed to use ready classes of Java. It is NOT allowed to move to string and use string operations.

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