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  • Can the Nikon D50 be hacked to record video?

    - by andy
    I mean hacked in terms of software only, and minor hardware hacking if necessary, without of course breaking the camera. Also, if possible, video should be able to be recorded at an acceptable frame rate, around 20fps. thanks p.s. Reason for this question: Just to give some context before people tell me to buy a new camera! For still photography I now almost exclusively shoot film with a Nikon F3, and my D50 is gathering dust. I want to shoot some video of my Capoeria classes, for personal use, and thought maybe I could put my D50 to good use. Yes, I could buy a D5000 or older D90, but really I just want to shoot some video with my nice wide Nikkor lenses at no extra cost!

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  • All email directed to 3rd party vendor except for one specific domain. How?

    - by jherlitz
    So we setup a site to site vpn tunnel with another company. We then proceeded to setup a DNS zone on each others dns servers and entered in each others Mail server name and IP, MX record and WWW record. This allowed us to send emails to each others mail servers through the site to site vpn. Now recently the other company started using MX Logic to scan all outbound and incoming mail. So all outbound email is directed to MX Logic. However we still want email between us to travel across the the Site to Site VPN tunnel. How can we specify that to happen for just one domain not to be directed to MX Logic? Stump on both ends and looking for help.

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  • Is there a way to read the contents of the master boot record?

    - by Codezilla
    Reading another question on here it made me curious if it's possible to actually read the contents of the mbr. As I understand it, there's a certain area at the very front of the partition that lists this information. I'm curious if it's sort of like an ini file or some sort of script that runs and tells the computer what it needs to know about where to boot from and other information like sectors, heads, cylinders that's important. I don't know much about what would be in it, but I thought it'd be interesting to learn more about the specifics.

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  • How to I get a rotated sprite to move left or right?

    - by rphello101
    Using Java/Slick 2D, I'm using the mouse to rotate a sprite on the screen and the directional keys (in this case, WASD) to move the spite. Forwards and backwards is easy, just position += cos(ang)*speed or position -= cos(ang)*speed. But how do I get the sprite to move left or right? I'm thinking it has something to do with adding 90 degrees to the angle or something. Any ideas? Rotation code: int mX = Mouse.getX(); int mY = HEIGHT - Mouse.getY(); int pX = sprite.x+sprite.image.getWidth()/2; int pY = sprite.y+sprite.image.getHeight()/2; double mAng; if(mX!=pX){ mAng = Math.toDegrees(Math.atan2(mY - pY, mX - pX)); if(mAng==0 && mX<=pX) mAng=180; } else{ if(mY>pY) mAng=90; else mAng=270; } sprite.angle = mAng; sprite.image.setRotation((float) mAng); And the movement code (delta is change in time): Input input = gc.getInput(); Vector2f direction = new Vector2f(); Vector2f velocity = new Vector2f(); direction.x = (float) Math.cos(Math.toRadians(sprite.angle)); direction.y = (float) Math.sin(Math.toRadians(sprite.angle)); if(direction.length()>0) direction = direction.normalise(); //On a separate note, what does this line of code do? velocity.x = (float) (direction.x * sprite.moveSpeed); velocity.y = (float) (direction.y * sprite.moveSpeed); if(input.isKeyDown(sprite.up)){ sprite.x += velocity.x*delta; sprite.y += velocity.y*delta; }if (input.isKeyDown(sprite.down)){ sprite.x -= velocity.x*delta; sprite.y -= velocity.y*delta; }if (input.isKeyDown(sprite.left)){ //??? }if (input.isKeyDown(sprite.right)){ //??? }

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  • Bash Script help required

    - by Sunil J
    I am trying to get this bash script that i found on a forum to work. Copied it to text editor. Saved it as script.sh chmod 700 and tried to run it. rootdir="/usr/share/malware" day=`date +%Y%m%d` url=`echo "wget -qO - http://lists.clean-mx.com/pipermail/viruswatch/$day/thread.html |\ awk '/\[Virus/'|tail -n 1|sed 's:\": :g' |\ awk '{print \"http://lists.clean-mx.com/pipermail/viruswatch/$day/\"$3}'"|sh` filename=`wget -qO - http://lists.clean-mx.com/pipermail/viruswatch/$day/thread.html |\ awk '/\[Virus/'|tail -n 1|sed 's:": :g' |awk '{print $3}'` links -dump $url$filename | awk '/Up/'|grep "TR\|exe" | awk '{print $2,$8,$10,$11,$12"\n"}' > $rootdir/>$filename dirname=`wget -qO - http://lists.clean-mx.com/pipermail/viruswatch/$day/thread.html |\ awk '/\[Virus/'|tail -n 1|sed 's:": :g' |awk '{print $3}'|sed 's:.html::g'` rm -rf $rootdir/$dirname mkdir $rootdir/$dirname cd $rootdir grep "exe$" $filename |awk '{print "wget \""$5"\""}' | sh ls *.exe | xargs md5 >> checksums mv *.exe $dirname rm -r $rootdir/*exe* mv checksums $rootdir/$dirname mv $filename $rootdir/$dirname I get the following message.. script.sh: line 11: /usr/share/malware/: Is a directory script.sh: line 11: links: command not found

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  • Location-Based redirection and duplication in sub-directories affecting SEO

    - by Joshua
    I currently own the website www.xyz.com. The website has a sub-directory for each of the 3 target countries: .../en-US/ (United States), .../es-MX/ (Mexico), and .../es-DO/ (Dominican Republic). I have two main questions about this setup: Currently, the main domain/root (xyz.com) contains a blank index.php file, but I would like for a user to be redirected to one of the sub-directories based on their regional location. What is the best way to accomplish this? I have looked at using browser language-based redirection, but how would I know whether to direct a user to the MX or DO site if the browser language is set to spanish? Is there a way to detect a user's geographic location? Also, the 3 websites are practically identical except they all have 3 unique color schemes and the US site is in english while the MX and DO sites are in spanish. My problem is that I believe GoogleBot is penalizing/banning my site because the spanish text on the MX and DO pages are nearly identical and are thus marked as duplicates/spam. Is there a way to avoid this?

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  • Google Maps Polygon - Not creating independent

    - by ferronrsmith
    I am basically populating a map with polygons, I am using the flex sdk. The problem I am having is that each time it adds a parish it keep adding to the previous polygons and treating it as one. HELP!! <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"> <maps:Map xmlns:maps="com.google.maps.*" id="map" mapevent_mapready="onMapReady(event)" width="100%" height="100%" key="ABQIAAAAGe0Fqwt-nY7G2oB81ZIicRT2yXp_ZAY8_ufC3CFXhHIE1NvwkxRcFmaI_t1gtsS5UN6mWQkH9kIw6Q"/> <mx:Script> <![CDATA[ import com.google.maps.Color; import com.google.maps.LatLng; import com.google.maps.Map; import com.google.maps.MapEvent; import com.google.maps.MapType; import com.google.maps.controls.ZoomControl; import com.google.maps.overlays.Polygon; import com.google.maps.overlays.PolygonOptions; import com.google.maps.styles.FillStyle; import com.google.maps.styles.StrokeStyle; import mx.controls.Alert; import mx.utils.ColorUtil; import mx.utils.object_proxy; private var polys:Array = new Array(); private var labels:Array = new Array(); // private var pts:Array = new Array(); // private var poly:Polygon; // private var map:Map; private function onMapReady(event:Event):void { map.setCenter(new LatLng(18.070146,-77.225647), 9, MapType.NORMAL_MAP_TYPE); map.addControl(new ZoomControl()); map.enableScrollWheelZoom(); map.enableContinuousZoom(); getXml(); } public function getXml():void { var xmlString:URLRequest = new URLRequest("parish.xml"); var xmlLoader:URLLoader = new URLLoader(xmlString); xmlLoader.addEventListener("complete", readXml); } private function readXml(event:Event):void { var markersXML:XML = new XML(event.target.data); var markers:XMLList = markersXML..parish; //var markersCount:int = markers.length(); var i:Number; var t:Number; for(i=0; i < markers.length(); i++) { var marker:XML = markers[i]; var name:String = marker.@name; var colour:String = marker.@colour; // Alert.show(""); var the_p:XMLList = markers..point; var pts:Array = []; for(t=0; t < the_p.length(); t++) { var theparish:XML = the_p[t]; pts[t] = new LatLng(theparish.@lat,theparish.@lng); // Alert.show("working" + theparish.@lat); // var pts.push(new LatLng(theparish.@lat,theparish.@lng)); } var poly:Polygon = new Polygon(pts, new PolygonOptions({ strokyStyle: new StrokeStyle({ color: colour, thickness: 1, alpha: 0.2}), fillStyle: new FillStyle({ color: colour, alpha: 0.2}) })); //polys.push(poly); //labels.push(name); Alert.show("this"); pts = [] map.addOverlay(poly); } } /* public function createMarker(latlng:LatLng, name:String, address:String, type:String): Marker { var marker:Marker = new Marker(latlng, new MarkerOptions({icon: new customIcons[type], iconOffset: new Point(-16, -32)})); var html:String = "<b>" + name + "</b> <br/>" + address; marker.addEventListener(MapMouseEvent.CLICK, function(e:MapMouseEvent):void { marker.openInfoWindow(new InfoWindowOptions({contentHTML:html})); }); return marker; } */ ]]> </mx:Script> </mx:Application>

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  • Flex 4: Traversing the Stage More Easily

    - by Steve
    The following is a MXML Module I am producing in Flex 4: <?xml version="1.0" encoding="utf-8"?> <mx:Module xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="init()" layout="absolute" width="100%" height="100%"> <fx:Declarations> <!-- Place non-visual elements (e.g., services, value objects) here --> </fx:Declarations> <fx:Style source="BMChartModule.css" /> <s:Panel id="panel" title="Benchmark Results" height="100%" width="100%" dropShadowVisible="false"> <mx:TabNavigator id="tn" height="100%" width="100%" /> </s:Panel> <fx:Script> <![CDATA[ import flash.events.Event; import mx.charts.ColumnChart; import mx.charts.effects.SeriesInterpolate; import mx.controls.Alert; import spark.components.BorderContainer; import spark.components.Button; import spark.components.Label; import spark.components.NavigatorContent; import spark.components.RadioButton; import spark.components.TextInput; import spark.layouts.*; private var xml:XML; private function init():void { var seriesInterpolate:SeriesInterpolate = new SeriesInterpolate(); seriesInterpolate.duration = 1000; xml = parentApplication.model.xml; var sectorList:XMLList = xml.SECTOR; for each(var i:XML in sectorList) { var ncLayout:HorizontalLayout = new HorizontalLayout(); var nc:NavigatorContent = new NavigatorContent(); nc.label = i.@NAME; nc.name = "NC_" + nc.label; nc.layout = ncLayout; tn.addElement(nc); var cC:ColumnChart = new ColumnChart(); cC.percentWidth = 70; cC.name = "CC"; nc.addElement(cC); var bClayout:VerticalLayout = new VerticalLayout(); var bC:BorderContainer = new BorderContainer(); bC.percentWidth = 30; bC.layout = bClayout; nc.addElement(bC); var bClabel:Label = new Label(); bClabel.percentWidth = 100; bClabel.text = "Select a graph to view it in the column chart:"; var dpList:XMLList = sectorList.(@NAME == i.@NAME).DATAPOINT; for each(var j:XML in dpList) { var rB:RadioButton = new RadioButton(); rB.groupName = "dp"; rB.label = j.@NAME; rB.addEventListener(MouseEvent.CLICK, rBclick); bC.addElement(rB); } } } private function rBclick(e:MouseEvent):void { var selectedTab:NavigatorContent = this.tn.selectedChild as NavigatorContent; var colChart:ColumnChart = selectedTab.getChildByName("CC") as ColumnChart; trace(selectedTab.getChildAt(0)); } ]]> </fx:Script> </mx:Module> I'm writing this function rBclick to redraw the column chart when a radio button is clicked. In order to do this I need to find the column chart on the stage using actionscript. I've currently got 3 lines of code in here to do this: var selectedTab:NavigatorContent = this.tn.selectedChild as NavigatorContent; var colChart:ColumnChart = selectedTab.getChildByName("CC") as ColumnChart; trace(selectedTab.getChildAt(0)); Getting to the active tab in the tabnavigator is easy enough, but then selectedTab.getChildAt(0) - which I was expecting to be the chart - is a "spark.skin.spark.SkinnableContainerSkin"...anyway, I can continue to traverse the tree using this somewhat annoying code, but I'm hoping there is an easier way. So in short, at run time I want to, with as little code as possible, identify the column chart in the active tab so I can redraw it. Any advice would be greatly appreciated.

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  • Difficulty accessing Google Search API with Flex

    - by CM
    Hi - I am trying to get the number of incoming links to a page through the Google Search API. It is not working (just returning Null) Here is the code <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init();" width="320" height="480" backgroundGradientColors="115115" backgroundGradientAlphas=".2" backgroundAlpha=".2" dropShadowEnabled="false"> <mx:Script> <![CDATA[ // // Author: Wayne IV Mike // Project: JSwoof - The Flex JSON library. // Description: Formated JSON loaded from txt file. // Date: 31st March 2009. // Contact: [email protected] , [email protected] // import json.*; import mx.controls.Alert; public function loadFile4(urlLink:String):void { var request:URLRequest = new URLRequest(urlLink); var urlLoad:URLLoader = new URLLoader(); urlLoad.addEventListener(Event.COMPLETE, fileLoaded4); urlLoad.load(request); } private function fileLoaded4(event:Event):void { var jObj:Object = JParser.decode(event.target.data); //Decode JSON from text file here. var jStr:String = JParser.encode(jObj); if(jStr != null && jStr != "") { var LinkTemp:String = jObj.estimatedResultCount; txtLinks.text = "Google Links " + LinkTemp; trace(event.target.data); } } /********************************************************************/ private function LinkLookup():void { loadFile4("http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=link:twitter.com/" + NameSearch.text); } ]]> </mx:Script> <mx:TextInput x="17" y="86" id="NameSearch" text="cnnbrk" width="229" height="30" fontSize="16" fontWeight="bold" cornerRadius="10" shadowDirection="center" shadowDistance="5"/> <mx:Button x="253" y="85" label="Find" id="GoSearch" click="LinkLookup()" height="31"/> <mx:Label text="Links" id="txtLinks" width="233" textAlign="left" color="#FFFFFF" fontSize="14" height="21"/> </mx:Application> Sorry for the ugly format. I added a trace(event.target.data); and updated the code above. This is the result - [SWF] C:/Documents and Settings/Robert/My Documents/Flex Builder 3/.metadata/.plugins/com.adobe.flash.profiler/ProfilerAgent.swf - 17,508 bytes after decompression [SWF] C:\Documents and Settings\Robert\My Documents\Flex Builder 3\Formated\bin-debug\Formated.swf - 781,950 bytes after decompression [Unload SWF] C:/Documents and Settings/Robert/My Documents/Flex Builder 3/.metadata/.plugins/com.adobe.flash.profiler/ProfilerAgent.swf {"responseData": {"results":[{"GsearchResultClass":"GwebSearch","unescapedUrl":"http://twitter.com/britishredneck","url":"http://twitter.com/britishredneck","visibleUrl":"twitter.com","cacheUrl":"http://www.google.com/search?q\u003dcache:4pQXnMQCZA4J:twitter.com","title":"Martyn Jones (BritishRedneck) on Twitter","titleNoFormatting":"Martyn Jones (BritishRedneck) on Twitter","content":"Finally found a free and simple way to expand my reach on Twitter. A nice 20 second process. http://tpq.me/5gbrg #twpq 3:13 PM Jul 18th, 2009 from API \u003cb\u003e...\u003c/b\u003e"},{"GsearchResultClass":"GwebSearch","unescapedUrl":"http://twitter.com/dshlian/favorites","url":"http://twitter.com/dshlian/favorites","visibleUrl":"twitter.com","cacheUrl":"http://www.google.com/search?q\u003dcache:79qm5Pz7O5QJ:twitter.com","title":"Twitter","titleNoFormatting":"Twitter","content":"Twitter is without a doubt the best way to share and discover what is happening right now."},{"GsearchResultClass":"GwebSearch","unescapedUrl":"http://twitter.com/rosannepeterson","url":"http://twitter.com/rosannepeterson","visibleUrl":"twitter.com","cacheUrl":"http://www.google.com/search?q\u003dcache:q11IcnW9l30J:twitter.com","title":"Rosanne Peterson (rosannepeterson) on Twitter","titleNoFormatting":"Rosanne Peterson (rosannepeterson) on Twitter","content":"Tx.All is well. Looking forward to the holday. Perhaps after will be time for certification! 8:14 AM Dec 23rd, 2009 from txt; I am also reading \u0026quot;How I \u003cb\u003e...\u003c/b\u003e"},{"GsearchResultClass":"GwebSearch","unescapedUrl":"http://twitter.com/MRSalesTraining","url":"http://twitter.com/MRSalesTraining","visibleUrl":"twitter.com","cacheUrl":"http://www.google.com/search?q\u003dcache:uBNGhud0vfEJ:twitter.com","title":"Medrep (MRSalesTraining) on Twitter","titleNoFormatting":"Medrep (MRSalesTraining) on Twitter","content":"Working away on Cardiovascular Medicine Module - heavy stuff for a Sunday evening!! 11:09 AM Nov 8th, 2009 from web; Today\u0026#39;s Student is tomorrow\u0026#39;s Medical \u003cb\u003e...\u003c/b\u003e"}],"cursor":{"pages":[{"start":"0","label":1},{"start":"4","label":2},{"start":"8","label":3},{"start":"12","label":4},{"start":"16","label":5},{"start":"20","label":6},{"start":"24","label":7},{"start":"28","label":8}],"estimatedResultCount":"64","currentPageIndex":0,"moreResultsUrl":"http://www.google.com/search?oe\u003dutf8\u0026ie\u003dutf8\u0026source\u003duds\u0026start\u003d0\u0026hl\u003den\u0026q\u003dlink%3Atwitter.com%2Fgenericmedlist"}}, "responseDetails": null, "responseStatus": 200} So the data return from the query is correct, and the difficulty lies in accessing the "estimatedResultCount" near the end of the JSON data. Any help would be greatly appreciated!

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  • PHP: Strange behaviour while calling custom php functions

    - by baltusaj
    I am facing a strange behavior while coding in PHP with Flex. Let me explain the situation: I have two funcions lets say: populateTable() //puts some data in a table made with flex createXML() //creates an xml file which is used by Fusion Charts to create a chart Now, if i call populateTable() alone, the table gets populated with data but if i call it with createXML(), the table doesn't get populated but createXML() does it's work i.e. creates an xml file. Even if i run following code, only xml file gets generated but table remains empty whereas i called populateTable() before createXML(). Any idea what may be going wrong? MXML Part <mx:HTTPService id="userRequest" url="request.php" method="POST" resultFormat="e4x"> <mx:request xmlns=""> <getResult>send</getResult> </mx:request> and <mx:DataGrid id="dgUserRequest" dataProvider="{userRequest.lastResult.user}" x="28.5" y="36" width="525" height="250" > <mx:columns> <mx:DataGridColumn headerText="No." dataField="no" /> <mx:DataGridColumn headerText="Name" dataField="name"/> <mx:DataGridColumn headerText="Age" dataField="age"/> </mx:columns> PHP Part <?php //-------------------------------------------------------------------------- function initialize($username,$password,$database) //-------------------------------------------------------------------------- { # Connect to the database $link = mysql_connect("localhost", $username,$password); if (!$link) { die('Could not connected to the database : ' . mysql_error()); } # Select the database $db_selected = mysql_select_db($database, $link); if (!$db_selected) { die ('Could not select the DB : ' . mysql_error()); } // populateTable(); createXML(); # Close database connection } //-------------------------------------------------------------------------- populateTable() //-------------------------------------------------------------------------- { if($_POST['getResult'] == 'send') { $Result = mysql_query("SELECT * FROM session" ); $Return = "<Users>"; $no = 1; while ( $row = mysql_fetch_object( $Result ) ) { $Return .= "<user><no>".$no."</no><name>".$row->name."</name><age>".$row->age."</age><salary>". $row->salary."</salary></session>"; $no=$no+1; $Return .= "</Users>"; mysql_free_result( $Result ); print ($Return); } //-------------------------------------------------------------------------- createXML() //-------------------------------------------------------------------------- { $users=array ( "0"=>array("",0), "1"=>array("Obama",0), "2"=>array("Zardari",0), "3"=>array("Imran Khan",0), "4"=>array("Ahmadenijad",0) ); $selectedUsers=array(1,4); //this means only obama and ahmadenijad are selected and the xml file will contain info related to them only //Extracting salaries of selected users $size=count($users); for($i = 0; $i<$size; $i++) { //initialize temp which will calculate total throughput for each protocol separately $salary = 0; $result = mysql_query("SELECT salary FROM userInfo where name='$users[$selectedUsers[$i]][0]'"); $row = mysql_fetch_array($result)) $salary = $row['salary']; } $users[$selectedUsers[$i]][1]=$salary; } //creating XML string $chartContent = "<chart caption=\"Users Vs Salaries\" formatNumberScale=\"0\" pieSliceDepth=\"30\" startingAngle=\"125\">"; for($i=0;$i<$size;$i++) { $chartContent .= "<set label=\"".$users[$selectedUsers[$i]][0]."\" value=\"".$users[$selectedUsers[$i]][1]."\"/>"; } $chartContent .= "<styles>" . "<definition>" . "<style type=\"font\" name=\"CaptionFont\" size=\"16\" color=\"666666\"/>" . "<style type=\"font\" name=\"SubCaptionFont\" bold=\"0\"/>" . "</definition>" . "<application>" . "<apply toObject=\"caption\" styles=\"CaptionFont\"/>" . "<apply toObject=\"SubCaption\" styles=\"SubCaptionFont\"/>" . "</application>" . "</styles>" . "</chart>"; $file_handle = fopen('ChartData.xml','w'); fwrite($file_handle,$chartContent); fclose($file_handle); } initialize("root","","hiddenpeak"); ?>

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  • SOA Suite 11g Native Format Builder Complex Format Example

    - by bob.webster
    This rather long posting details the steps required to process a grouping of fixed length records using Format Builder.   If it’s 10 pm and you’re feeling beat you might want to leave this until tomorrow.  But if it’s 10 pm and you need to get a Format Builder Complex template done, read on… The goal is to process individual orders from a file using the 11g File Adapter and Format Builder Sample Data =========== 001Square Widget            0245.98 102Triagular Widget         1120.00 403Circular Widget           0099.45 ORD8898302/01/2011 301Hexagon Widget         1150.98 ORD6735502/01/2011 The records are fixed length records representing a number of logical Order records. Each order record consists of a number of item records starting with a 3 digit number, followed by a single Summary Record which starts with the constant ORD. How can this file be processed so that the first poll returns the first order? 001Square Widget            0245.98 102Triagular Widget         1120.00 403Circular Widget           0099.45 ORD8898302/01/2011 And the second poll returns the second order? 301Hexagon Widget           1150.98 ORD6735502/01/2011 Note: if you need more than one order per poll, that’s also possible, see the “Multiple Messages” field in the “File Adapter Step 6 of 9” snapshot further down.   To follow along with this example you will need - Studio Edition Version 11.1.1.4.0    with the   - SOA Extension for JDeveloper 11.1.1.4.0 installed Both can be downloaded from here:  http://www.oracle.com/technetwork/middleware/soasuite/downloads/index.html You will not need a running WebLogic Server domain to complete the steps and Format Builder tests in this article.     Start with a SOA Composite containing a File Adapter The Format Builder is part of the File Adapter so start by creating a new SOA Project and Composite. Here is a quick summary for those not familiar with these steps - Start JDeveloper - From the Main Menu choose File->New - In the New Gallery window that opens Expand the “General” category and Select the Applications node.   Then choose SOA Application from the Items section on the right.  Finally press the OK button. - In Step 1 of the “Create SOA Application wizard” that appears enter an Application Name and an Directory of your     choice,   then press the Next button. - In Step 2 of the “Create SOA Application wizard”, press the Next button leaving all entries as defaulted. - In Step 3 of the “Create SOA Application wizard”, Enter a composite name of your choice and Press the Finish   Button These steps result in a new Application and SOA Project. The SOA Project contains a composite.xml file which is opened and shown below. For our example we have not defined a Mediator or a BPEL process to minimize the steps, but one or the other would eventually be needed to use the File Adapter we are about to create. Drag and drop the File Adapter icon from the Component Pallette onto either the LEFT side of the diagram under “Exposed Services” or the right side under “External References”.  (See the Green Circle in the image below).  Placing the adapter on the left side would indicate the file being processed is inbound to the composite, if the adapter is placed on the right side then the data is outbound to a file.     Note that the same Format Builder definition can be used in both directions.  For example we could use the format with a File Adapter on the left side of the composite to parse fixed data into XML, modify the data in our Composite or BPEL process and then use the same Format Builder definition with a File adapter on the right side of the composite to write the data back out in the same fixed data format When the File Adapter is dropped on the Composite the File Adapter Wizard Appears. Skip Past the first page, Step 1 of 9 by pressing the Next button. In Step 2 enter a service name of your choice as shown below, then press Next   When the Native Format Builder appears, skip the welcome page by pressing next. Also press the Next button to accept the settings on Step 3 of 9 On Step 4, select Read File and press the Next button as shown below.   On Step 5 enter a directory that will contain a file with the input data, then  Press the Next button as shown below. In step 6, enter *.txt or another file format to select input files from the input directory mentioned in step 5. ALSO check the “Files contain Multiple Messages” checkbox and set the “Publish Messages in Batches of” field to 1.  The value can be set higher to increase the number of logical order group records returned on each poll of the file adapter.  In other words, it determines the number of Orders that will be sent to each instance of a Mediator or Composite processing using the File Adapter.   Skip Step 7 by pressing the Next button In Step 8 press the Gear Icon on the right side to load the Native Format Builder.       Native Format Builder  appears Before diving into the format, here is an overview of the process. Approach - Bottom up Assuming an Order is a grouping of item records and a summary record…. - Define a separate  Complex Type for each Record Type found in the group.    (One for itemRecord and one for summaryRecord) - Define a Complex Type to contain the Group of Record types defined above   (LogicalOrderRecord) - Define a top level element to represent an order.  (order)   The order element will be of type LogicalOrderRecord   Defining the Format In Step 1 select   “Create new”  and  “Complex Type” and “Next”   In Step two browse to and select a file containing the test data shown at the start of this article. A link is provided at the end of this article to download a file containing the test data. Press the Next button     In Step 3 Complex types must be define for each type of input record. Select the Root-Element and Click on the Add Complex Type icon This creates a new empty complex type definition shown below. The fastest way to create the definition is to highlight the first line of the Sample File data and drag the line onto the  <new_complex_type> Format Builder introspects the data and provides a grid to define additional fields. Change the “Complex Type Name” to  “itemRecord” Then click on the ruler to indicate the position of fixed columns.  Drag the red triangle icons to the exact columns if necessary. Double click on an existing red triangle to remove an unwanted entry. In the case below fields are define in columns 0-3, 4-28, 29-eol When the field definitions are correct, press the “Generate Fields” button. Field entries named C1, C2 and C3 will be created as shown below. Click on the field names and rename them from C1->itemNum, C2->itemDesc and C3->itemCost  When all the fields are correctly defined press OK to save the complex type.        Next, the process is repeated to define a Complex Type for the SummaryRecord. Select the Root-Element in the schema tree and press the new complex type icon Then highlight and drag the Summary Record from the sample data onto the <new_complex_type>   Change the complex type name to “summaryRecord” Mark the fixed fields for Order Number and Order Date. Press the Generate Fields button and rename C1 and C2 to itemNum and orderDate respectively.   The last complex type to be defined is a type to hold the group of items and the summary record. Select the Root-Element in the schema tree and click the new complex type icon Select the “<new_complex_type>” entry and click the pencil icon   On the Complex Type Details page change the name and type of each input field. Change line 1 to be named item and set the Type  to “itemRecord” Change line 2 to be named summary and set the Type to “summaryRecord” We also need to indicate that itemRecords repeat in the input file. Click the pencil icon at the right side of the item line. On the Edit Details page change the “Max Occurs” entry from 1 to UNBOUNDED. We also need to indicate how to identify an itemRecord.  Since each item record has “.” in column 32 we can use this fact to differentiate an item record from a summary record. Change the “Look Ahead” field to value 32 and enter a period in the “Look For” field Press the OK button to save entry.     Finally, its time to create a top level element to represent an order. Select the “Root-Element” in the schema tree and press the New element icon Click on the <new_element> and press the pencil icon.   Set the Element Name to “order” and change the Data Type to “logicalOrderRecord” Press the OK button to save the element definition.   The final definition should match the screenshot below. Press the Next Button to view the definition source.     Press the Test Button to test the definition   Press the Green Triangle Icon to run the test.   And we are presented with an unwelcome error. The error states that the processor ran out of data while working through the definition. The processor was unable to differentiate between itemRecords and summaryRecords and therefore treated the entire file as a list of itemRecords.  At end of file, the “summary” portion of the logicalOrderRecord remained unprocessed but mandatory.   This root cause of this error is the loss of our “lookAhead” definition used to identify itemRecords. This appears to be a bug in the  Native Format Builder 11.1.1.4.0 Luckily, a simple workaround exists. Press the Cancel button and return to the “Step 4 of 4” Window. Manually add    nxsd:lookAhead="32" nxsd:lookFor="."   attributes after the maxOccurs attribute of the item element. as shown in the highlighted text below.   When the lookAhead and lookFor attributes have been added Press the Test button and on the Test page press the Green Triangle. The test is now successful, the first order in the file is returned by the File Adapter.     Below is a complete listing of the Result XML from the right column of the screen above   Try running it The downloaded input test file and completed schema file can be used for testing without following all the Native Format Builder steps in this example. Use the following link to download a file containing the sample data. Download Sample Input Data This is the best approach rather than cutting and pasting the input data at the top of the article.  Since the data is fixed length it’s very important to watch out for trailing spaces in the data and to ensure an eol character at the end of every line. The download file is correctly formatted. The final schema definition can be downloaded at the following link Download Completed Schema Definition   - Save the inputData.txt file to a known location like the xsd folder in your project. - Save the inputData_6.xsd file to the xsd folder in your project. - At step 1 in the Native Format Builder wizard  (as shown above) check the “Edit existing” radio button,    then browse and select the inputData_6.xsd file - At step 2 of the Format Builder configuration Wizard (as shown above) supply the path and filename for    the inputData.txt file. - You can then proceed to the test page and run a test. - Remember the wizard bug will drop the lookAhead and lookFor attributes,  you will need to manually add   nxsd:lookAhead="32" nxsd:lookFor="."    after the maxOccurs attribute of the item element in the   LogicalOrderRecord Complex Type.  (as shown above)   Good Luck with your Format Project

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  • xvidcap: Error accessing sound input from /dev/dsp

    - by stivlo
    I'm running Ubuntu 11.10 and I'm trying xvidcap to record a screencast with audio from the microphone, however it can't record any sound: $ xvidcap --file appo.avi --cap_geometry 700x500-0+0 Error accessing sound input from /dev/dsp Sound disabled! Sure enough /dev/dsp doesn't even exist: $ sudo ls -lh /dev/dsp ls: cannot access /dev/dsp: No such file or directory I found a blog post about fixing xvidcap sound input, however if I try the suggestion I get: $ sudo modprobe snd-pcm-oss FATAL: Module snd_pcm_oss not found. So the question is, how can I create /dev/dsp? The problem behind the problem is: how can I record sound from the microphone with xvidcap? So workarounds are welcome too. UPDATE: I've followed the suggestion of James, and something has improved. The error accessing /dev/dsp is gone, however now I get: [oss @ 0x8e0c120] Estimating duration from bitrate, this may be inaccurate xtoffmpeg.c add_audio_stream(): Can't initialize fifo for audio recording Now when I record xvidcap appears in the recording tab of pavucontrol and I can choose Audio stream from Internal Audio Analog Stereo or Monitor of Internal Audio Analog Stereo, I tried both just in case, but the video is still mute. UPDATE 2: I found that "Monitor of" is the one to record application sounds, while for microphone, I should choose "Internal Audio Analog Stereo". To rule out other problems, such as with the microphone, I tried with gnome-sound-recorder and it works. Actually I jumped on my chair, since the volume was too high! :-)

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  • Mapping an amazon server to a domain name registered with name.com

    - by S4M
    I have an amazon S3 web server and a domain name registered in name.com (the name is sam-experiments.com). I am trying to have a static page hosted on the amazon web server to be displayed on http://www.sam-experiments.com On the web server side, my bucket name is 'www.sam-experiments.com', and it links to here: http://www.sam-experiments.com.s3-website-eu-west-1.amazonaws.com/ On name.com, I added a new record with the followin characteristics: Record Type: CNAME Record Host: www.sam-experiments.com Record Answer: www.sam-experiments.com.s3.amazonaws.com. (as specified in the documentation here: http://docs.amazonwebservices.com/AmazonS3/latest/dev/VirtualHosting.html#VirtualHostingCustomURLs) TTL: 300 However, nothing gets displayed on www.sam-experiments.com, and I am not able to find what I am doing wrong. I really would appreciate some tip. Thanks! Note: I already posted this question in stackoverflow, but didnt get any answer, so I thought posting here may be more appropriate.

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  • How do I use MediaRecorder to record video without causing a segmentation fault?

    - by rabidsnail
    I'm trying to use android.media.MediaRecorder to record video, and no matter what I do the android runtime segmentation faults when I call prepare(). Here's an example: public void onCreate(Bundle savedInstanceState) { Log.i("video test", "making recorder"); MediaRecorder recorder = new MediaRecorder(); contentResolver = getContentResolver(); try { super.onCreate(savedInstanceState); Log.i("video test", "--------------START----------------"); SurfaceView target_view = new SurfaceView(this); Log.i("video test", "making surface"); Surface target = target_view.getHolder().getSurface(); Log.i("video test", target.toString()); Log.i("video test", "new recorder"); recorder = new MediaRecorder(); Log.i("video test", "set display"); recorder.setPreviewDisplay(target); Log.i("video test", "pushing surface"); setContentView(target_view); Log.i("video test", "set audio source"); recorder.setAudioSource(MediaRecorder.AudioSource.MIC); Log.i("video test", "set video source"); recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT); Log.i("video test", "set output format"); recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); Log.i("video test", "set audio encoder"); recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); Log.i("video test", "set video encoder"); recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP); Log.i("video test", "set max duration"); recorder.setMaxDuration(3600); Log.i("video test", "set on info listener"); recorder.setOnInfoListener(new listener()); Log.i("video test", "set video size"); recorder.setVideoSize(320, 240); Log.i("video test", "set video frame rate"); recorder.setVideoFrameRate(15); Log.i("video test", "set output file"); recorder.setOutputFile(get_path(this, "foo.3gp")); Log.i("video test", "prepare"); recorder.prepare(); Log.i("video test", "start"); recorder.start(); Log.i("video test", "sleep"); Thread.sleep(3600); Log.i("video test", "stop"); recorder.stop(); Log.i("video test", "release"); recorder.release(); Log.i("video test", "-----------------SUCCESS------------------"); finish(); } catch (Exception e) { Log.i("video test", e.toString()); recorder.reset(); recorder.release(); Log.i("video tets", "-------------------FAIL-------------------"); finish(); } } public static String get_path (Context context, String fname) { String path = context.getFileStreamPath("foo").getParentFile().getAbsolutePath(); String res = path+"/"+fname; Log.i("video test", "path: "+res); return res; } class listener implements MediaRecorder.OnInfoListener { public void onInfo(MediaRecorder recorder, int what, int extra) { Log.i("video test", "Video Info: "+what+", "+extra); } }

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  • Screen shots and documentation on the cheap

    - by Kyle Burns
    Occasionally I am surprised to open up my toolbox and find a great tool that I've had for years and never noticed.  The other day I had just such an experience with Windows Server 2008.  A co-worker of mine was squinting to read to screenshots that he had taken using the "Print Screen, paste" method in WordPad and asked me if there was a better tool available at a reasonable cost.  My first instinct was to take a look at CamStudio for him, but I also knew that he had an immediate need to take some more screenshots, so I decided to check and see if the Snipping Tool found in Windows 7 is also available in Windows Server 2008.  I clicked the Start button and typed “snip” into the search bar and while the Snipping Tool did not come up, a Control Panel item labeled “Record steps to reproduce a problem” did. The application behind the Control Panel entry was “Problem Steps Recorder” (PSR.exe) and I have confirmed that it is available in Windows 7 and Windows Server 2008 R2 but have not checked other platforms.  It presents a pretty minimal and intuitive interface in providing a “Start Record”, “Stop Record”, and “Add Comment” button.  The “Start Record” button shockingly starts recording and, sure enough, the “Stop Record” button stops recording.  The “Add Comment” button prompts for a comment and for you to highlight the area of the screen to which your comment is related.  Once you’re done recording, the tool outputs an MHT file packaged in a ZIP archive.  This file contains a series of screen shots depicting the user’s interactions and giving timestamps and descriptive text (such as “User left click on “Test” in “My Page – Windows Internet Explorer”) as well as the comments they made along the way and some diagnostics about the applications captured. The Problem Steps Recorder looks like a simple solution to the most common of my needs for documentation that can turn “I can’t understand how to make it do what you’re reporting” to “Oh, I see what you’re talking about and will fix it right away”.  I you’re like me and haven’t yet discovered this tool give it a whirl and see for yourself.

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  • 3D Printed Records Bring New Tunes to Iconic Fisher-Price Toy Player

    - by Jason Fitzpatrick
    Have an old toy Fisher-Price record player your kids aren’t exactly enamored with? Now, thanks to the miracle of 3D printing, you can create new records for it. Courtesy of Fred Murphy, this Instructables tutorial will guide you through the process of taking music and encoding it in a 3D printer file that will yield a tiny plastic record the Fisher-Prince record player can play. Check out the video above to see the finished product or hit up the link below to read the full tutorial. 3D Printing for the Fisher-Price Record Player [via Make] How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It

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  • eXML-PARSER output contains unwanted hash references

    - by seaworthy
    So I wrote a parser routine to take one xml file and reparse into another one. This code I later modified to split a large xml file into many small xml files. I am having a problem with an output. Parsing works fine the only thing output also includes unwanted strings like HASH(0x19f9b58), I am not sure why and need set of friendly eyes. use Encode; use XML::Parser; my $parser = XML::Parser->new( Handlers => {Start => \&handle_elem_start, End => \&handle_elem_end,Char => \&handle_char_data,}); my $record; my $file = shift @ARGV; if( $file ) {$parser->parsefile( $file );} exit; sub handle_elem_start { my( $expat, $name, %atts ) = @_; if ($name eq 'articles'){$file="_data.xml";unlink($file);} $record .= "<"; $record .= "$name"; foreach my $key (keys %atts){$record .= " $key=\"$atts{$key}\"";} $record .= ">"; } sub handle_char_data { my( $expat, $text ) = @_; $text = decode_utf8( $text ); $record .= "$text"; } sub handle_elem_end { my( $expat, $name ) = @_; $record .= "</$name>"; if( $name eq 'article' ) { open (MYFILE, '>>'.$file); print MYFILE $record; close (MYFILE); print $record; $record = {}; } return unless( $name eq 'article' ); } Sample output: ... </article>HASH(0x19f9b40) <article doi="10.1103/PhysRevSeriesI.9.304"> <journal short="Phys. Rev. (Series I)" jcode="PRI">Physical Review (Series I)</journal> <volume>9</volume> <issue printdate="1899-11-00">5</issue> <fpage>304</fpage> <lpage>309</lpage> <seqno>1</seqno> <price></price><tocsec>Articles</tocsec> <arttype type="article"></arttype><doi>10.1103/PhysRevSeriesI.9.304</doi> <title>An Investigation of the Magnetic Qualities of Building Brick</title> <authgrp> <author><givenname>O.</givenname><middlename>A.</middlename><surname>Gage</surname></author> <author><givenname>H.</givenname><middlename>E.</middlename><surname>Lawrence</surname></author> </authgrp> <cpyrt> <cpyrtdate date="1899"></cpyrtdate><cpyrtholder>The American Physical Society</cpyrtholder> </cpyrt> </article>HASH(0x19f9b58) ... HASH strings are not wanted, please advise.

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  • Design Pattern for Complex Data Modeling

    - by Aaron Hayman
    I'm developing a program that has a SQL database as a backing store. As a very broad description, the program itself allows a user to generate records in any number of user-defined tables and make connections between them. As for specs: Any record generated must be able to be connected to any other record in any other user table (excluding itself...the record, not the table). These "connections" are directional, and the list of connections a record has is user ordered. Moreover, a record must "know" of connections made from it to others as well as connections made to it from others. The connections are kind of the point of this program, so there is a strong possibility that the number of connections made is very high, especially if the user is using the software as intended. A record's field can also include aggregate information from it's connections (like obtaining average, sum, etc) that must be updated on change from another record it's connected to. To conserve memory, only relevant information must be loaded at any one time (can't load the entire database in memory at load and go from there). I cannot assume the backing store is local. Right now it is, but eventually this program will include syncing to a remote db. Neither the user tables, connections or records are known at design time as they are user generated. I've spent a lot of time trying to figure out how to design the backing store and the object model to best fit these specs. In my first design attempt on this, I had one object managing all a table's records and connections. I attempted this first because it kept the memory footprint smaller (records and connections were simple dicts), but maintaining aggregate and link information between tables became....onerous (ie...a huge spaghettified mess). Tracing dependencies using this method almost became impossible. Instead, I've settled on a distributed graph model where each record and connection is 'aware' of what's around it by managing it own data and connections to other records. Doing this increases my memory footprint but also let me create a faulting system so connections/records aren't loaded into memory until they're needed. It's also much easier to code: trace dependencies, eliminate cycling recursive updates, etc. My biggest problem is storing/loading the connections. I'm not happy with any of my current solutions/ideas so I wanted to ask and see if anybody else has any ideas of how this should be structured. Connections are fairly simple. They contain: fromRecordID, fromTableID, fromRecordOrder, toRecordID, toTableID, toRecordOrder. Here's what I've come up with so far: Store all the connections in one big table. If I do this, either I load all connections at once (one big db call) or make a call every time a user table is loaded. The big issue here: the size of the connections table has the potential to be huge, and I'm afraid it would slow things down. Store in separate tables all the outgoing connections for each user table. This is probably the worst idea I've had. Now my connections are 'spread out' over multiple tables (one for each user table), which means I have to make a separate DB called to each table (or make a huge join) just to find all the incoming connections for a particular user table. I've avoided making "one big ass table", but I'm not sure the cost is worth it. Store in separate tables all outgoing AND incoming connections for each user table (using a flag to distinguish between incoming vs outgoing). This is the idea I'm leaning towards, but it will essentially double the total DB storage for all the connections (as each connection will be stored in two tables). It also means I have to make sure connection information is kept in sync in both places. This is obviously not ideal but it does mean that when I load a user table, I only need to load one 'connection' table and have all the information I need. This also presents a separate problem, that of connection object creation. Since each user table has a list of all connections, there are two opportunities for a connection object to be made. However, connections objects (designed to facilitate communication between records) should only be created once. This means I'll have to devise a common caching/factory object to make sure only one connection object is made per connection. Does anybody have any ideas of a better way to do this? Once I've committed to a particular design pattern I'm pretty much stuck with it, so I want to make sure I've come up with the best one possible.

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  • SQL Server Table Polling by Multiple Subscribers

    - by Daniel Hester
    Background Designing Stored Procedures that are safe for multiple subscribers (to call simultaneously) can be challenging.  For example let’s say that you want multiple worker processes to poll a shared work queue that’s encapsulated as a SQL Table. This is a common scenario and through experience you’ll find that you want to use Table Hints to prevent unwanted locking when performing simultaneous queries on the same table. There are three table hints to consider: NOLOCK, READPAST and UPDLOCK. Both NOLOCK and READPAST table hints allow you to SELECT from a table without placing a LOCK on that table. However, SELECTs with the READPAST hint will ignore any records that are locked due to being updated/inserted (or otherwise “dirty”), whereas a SELECT with NOLOCK ignores all locks including dirty reads. For the initial update of the flag (that marks the record as available for subscription) I don’t use the NOLOCK Table Hint because I want to be sensitive to the “active” records in the table and I want to exclude them.  I use an Update Lock (UPDLOCK) in conjunction with a WHERE clause that uses a sub-select with a READPAST Table Hint in order to explicitly lock the records I’m updating (UPDLOCK) but not place a lock on the table when selecting the records that I’m going to update (READPAST). UPDATES should be allowed to lock the rows affected because we’re probably changing a flag on a record so that it is not included in a SELECT from another subscriber. On the UPDATE statement we should explicitly use the UPDLOCK to guard against lock escalation. A SELECT to check for the next record(s) to process can result in a shared read lock being held by more than one subscriber polling the shared work queue (SQL table). It is expected that more than one worker process (or server) might try to process the same new record(s) at the same time. When each process then tries to obtain the update lock, none of them can because another process has a shared read lock in place. Thus without the UPDLOCK hint the result would be a lock escalation deadlock; however with the UPDLOCK hint this condition is mitigated against. Note that using the READPAST table hint requires that you also set the ISOLATION LEVEL of the transaction to be READ COMMITTED (rather than the default of SERIALIZABLE). Guidance In the Stored Procedure that returns records to the multiple subscribers: Perform the UPDATE first. Change the flag that makes the record available to subscribers.  Additionally, you may want to update a LastUpdated datetime field in order to be able to check for records that “got stuck” in an intermediate state or for other auditing purposes. In the UPDATE statement use the (UPDLOCK) Table Hint on the UPDATE statement to prevent lock escalation. In the UPDATE statement also use a WHERE Clause that uses a sub-select with a (READPAST) Table Hint to select the records that you’re going to update. In the UPDATE statement use the OUTPUT clause in conjunction with a Temporary Table to isolate the record(s) that you’ve just updated and intend to return to the subscriber. This is the fastest way to update the record(s) and to get the records’ identifiers within the same operation. Finally do a set-based SELECT on the main Table (using the Temporary Table to identify the records in the set) with either a READPAST or NOLOCK table hint.  Use NOLOCK if there are other processes (besides the multiple subscribers) that might be changing the data that you want to return to the multiple subscribers; or use READPAST if you're sure there are no other processes (besides the multiple subscribers) that might be updating column data in the table for other purposes (e.g. changes to a person’s last name).  NOLOCK is generally the better fit in this part of the scenario. See the following as an example: CREATE PROCEDURE [dbo].[usp_NewCustomersSelect] AS BEGIN -- OVERRIDE THE DEFAULT ISOLATION LEVEL SET TRANSACTION ISOLATION LEVEL READ COMMITTED -- SET NOCOUNT ON SET NOCOUNT ON -- DECLARE TEMP TABLE -- Note that this example uses CustomerId as an identifier; -- you could just use the Identity column Id if that’s all you need. DECLARE @CustomersTempTable TABLE ( CustomerId NVARCHAR(255) ) -- PERFORM UPDATE FIRST -- [Customers] is the name of the table -- [Id] is the Identity Column on the table -- [CustomerId] is the business document key used to identify the -- record globally, i.e. in other systems or across SQL tables -- [Status] is INT or BIT field (if the status is a binary state) -- [LastUpdated] is a datetime field used to record the time of the -- last update UPDATE [Customers] WITH (UPDLOCK) SET [Status] = 1, [LastUpdated] = GETDATE() OUTPUT [INSERTED].[CustomerId] INTO @CustomersTempTable WHERE ([Id] = (SELECT TOP 100 [Id] FROM [Customers] WITH (READPAST) WHERE ([Status] = 0) ORDER BY [Id] ASC)) -- PERFORM SELECT FROM ENTITY TABLE SELECT [C].[CustomerId], [C].[FirstName], [C].[LastName], [C].[Address1], [C].[Address2], [C].[City], [C].[State], [C].[Zip], [C].[ShippingMethod], [C].[Id] FROM [Customers] AS [C] WITH (NOLOCK), @CustomersTempTable AS [TEMP] WHERE ([C].[CustomerId] = [TEMP].[CustomerId]) END In a system that has been designed to have multiple status values for records that need to be processed in the Work Queue it is necessary to have a “Watch Dog” process by which “stale” records in intermediate states (such as “In Progress”) are detected, i.e. a [Status] of 0 = New or Unprocessed; a [Status] of 1 = In Progress; a [Status] of 2 = Processed; etc.. Thus, if you have a business rule that states that the application should only process new records if all of the old records have been processed successfully (or marked as an error), then it will be necessary to build a monitoring process to detect stalled or stale records in the Work Queue, hence the use of the LastUpdated column in the example above. The Status field along with the LastUpdated field can be used as the criteria to detect stalled / stale records. It is possible to put this watchdog logic into the stored procedure above, but I would recommend making it a separate monitoring function. In writing the stored procedure that checks for stale records I would recommend using the same kind of lock semantics as suggested above. The example below looks for records that have been in the “In Progress” state ([Status] = 1) for greater than 60 seconds: CREATE PROCEDURE [dbo].[usp_NewCustomersWatchDog] AS BEGIN -- TO OVERRIDE THE DEFAULT ISOLATION LEVEL SET TRANSACTION ISOLATION LEVEL READ COMMITTED -- SET NOCOUNT ON SET NOCOUNT ON DECLARE @MaxWait int; SET @MaxWait = 60 IF EXISTS (SELECT 1 FROM [dbo].[Customers] WITH (READPAST) WHERE ([Status] = 1) AND (DATEDIFF(s, [LastUpdated], GETDATE()) > @MaxWait)) BEGIN SELECT 1 AS [IsWatchDogError] END ELSE BEGIN SELECT 0 AS [IsWatchDogError] END END Downloads The zip file below contains two SQL scripts: one to create a sample database with the above stored procedures and one to populate the sample database with 10,000 sample records.  I am very grateful to Red-Gate software for their excellent SQL Data Generator tool which enabled me to create these sample records in no time at all. References http://msdn.microsoft.com/en-us/library/ms187373.aspx http://www.techrepublic.com/article/using-nolock-and-readpast-table-hints-in-sql-server/6185492 http://geekswithblogs.net/gwiele/archive/2004/11/25/15974.aspx http://grounding.co.za/blogs/romiko/archive/2009/03/09/biztalk-sql-receive-location-deadlocks-dirty-reads-and-isolation-levels.aspx

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  • Java Desktop Application For Network users

    - by Motasem Abu Aker
    I'm developing a desktop application using Java. My application will run in a network environment where multiple users will access the same database through the application. There will be basic CRUD opreations (Insert, Update, Delete, & select), which means there will be chances of deadlock, or two users trying to update the same record at same time. I'm using the following Java Swing for Clients (MVC). MySQL Server for database (InnODB). Java Web start. Now, MySQL is centralized on the network, and all of the clients connect to it. The Application for ERP Purpose. I searched the internet to find a very good solution to ensure data integrity & to make sure that when updating one record from one client, other clients are aware of it. I read about Socket-server-client & RESTful web services. I don't want to go web application & don't want to use any extra libraries. So how can I handle this scenario: If User A updates a record: Is there a way to update User B's screen with the new value? If user A starts updating a record, how can I prevent other users from attempting to update the same record?

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  • Increase the size of a memory mapped file

    - by sandun dhammika
    I am maintaning a memory mapped file to store my tree like datastructure. When I'm updating the datastructure ,I got this problem. The file is limited on it's size and can't be too long or too small. I have a methods like void mapfile_insert_record(RECORD* /* record*/); void mapfile_modify_record(RECORD* /* record*/); Both operations could lead to exceed the space which is free on memory file. How do I overcome this? What strategy I should use. calculate whether it requires to exceed the file as a pre-condition on both methods. Dynamically exceed it , for a example manage a timer and constantly polling file for it's free avaliable size and then automatically extend it. Any ideas or patterns to overcome this problem?

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  • How to display a person record just after saving his data to iPhone Address Book?

    - by camelCase
    this is my code and it works flawless, where my_value is a string with separator ','. everythign works fin but i'd like to display the person record from the address book after i saved it, so in the function if(isSaved) { // **** code here *** } here the complete function - (void) addToAgenda: (NSString*) my_value{ //NSArray *strings = [my_value componentsSeparatedByString: @","]; NSArray *dati=[[NSArray alloc] initWithArray:[my_value componentsSeparatedByString:@","]]; NSString *userwebsite = [dati objectAtIndex:0]; NSString *fname = [dati objectAtIndex:1]; NSString *lname = [dati objectAtIndex:2]; NSString *useremail = [dati objectAtIndex:3];; NSString *usermobile = [dati objectAtIndex:4]; NSString *usercompany = @"xxx"; ABRecordRef aRecord = ABPersonCreate(); CFErrorRef anError = NULL; // fisrst name ABRecordSetValue(aRecord, kABPersonFirstNameProperty, fname, &anError); // last name ABRecordSetValue(aRecord, kABPersonLastNameProperty, lname, &anError); // Phone Number. ABMutableMultiValueRef multi = ABMultiValueCreateMutable(kABMultiStringPropertyType); ABMultiValueAddValueAndLabel(multi, (CFStringRef)usermobile, kABWorkLabel, NULL); ABRecordSetValue(aRecord, kABPersonPhoneProperty, multi, &anError); CFRelease(multi); // Company ABRecordSetValue(aRecord, kABPersonDepartmentProperty, usercompany, &anError); // email NSLog(@"%@", useremail); ABMutableMultiValueRef multiemail = ABMultiValueCreateMutable(kABMultiStringPropertyType); ABMultiValueAddValueAndLabel(multiemail, (CFStringRef)useremail, kABWorkLabel, NULL); ABRecordSetValue(aRecord, kABPersonEmailProperty, multiemail, &anError); CFRelease(multiemail); // website NSLog(@"%@", userwebsite); ABMutableMultiValueRef multiweb = ABMultiValueCreateMutable(kABMultiStringPropertyType); ABMultiValueAddValueAndLabel(multiweb, (CFStringRef)userwebsite, kABWorkLabel, NULL); ABRecordSetValue(aRecord, kABPersonURLProperty, multiweb, &anError); CFRelease(multiemail); if (anError != NULL) NSLog(@"error while creating.."); CFStringRef personname, personlname, personcompind, personemail, personwebsite, personcontact; personname = ABRecordCopyValue(aRecord, kABPersonFirstNameProperty); personlname = ABRecordCopyValue(aRecord, kABPersonLastNameProperty); personcompind = ABRecordCopyValue(aRecord, kABPersonDepartmentProperty); personemail = ABRecordCopyValue(aRecord, kABPersonEmailProperty); personwebsite = ABRecordCopyValue(aRecord, kABPersonURLProperty); personcontact = ABRecordCopyValue(aRecord, kABPersonPhoneProperty); ABAddressBookRef addressBook; CFErrorRef error = NULL; addressBook = ABAddressBookCreate(); BOOL isAdded = ABAddressBookAddRecord (addressBook, aRecord, &error); if(isAdded){ NSLog(@"added.."); } if (error != NULL) { NSLog(@"ABAddressBookAddRecord %@", error); } error = NULL; BOOL isSaved = ABAddressBookSave (addressBook, &error); if(isSaved) { // **** code here *** } if (error != NULL) { NSLog(@"ABAddressBookSave %@", error); UIAlertView *alertOnChoose = [[UIAlertView alloc] initWithTitle:@"Unable to save this time" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:@"Ok", nil]; [alertOnChoose show]; [alertOnChoose release]; } CFRelease(aRecord); CFRelease(personname); CFRelease(personlname); CFRelease(personcompind); CFRelease(personcontact); CFRelease(personemail); CFRelease(personwebsite); CFRelease(addressBook); }

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  • what is the best program to capture my workings as an AVI or MPEG

    - by raihanchy
    I have already used recordmydesktop, xvidcap and kazam. My sound working fine with other audio or videos. xvidcap doesn't record sound at all. I have tried many ways. If I try as: 'padsp xvidcap', it also gives error, like: /dev/dsp cannot found or missing. I have changed it to /dev/snd. Still no effect. Even I can record sound through gnome-sound-recorder - after pressing record button, I open pavucontrol. Then from Recording tab, I choose 'Monitor of Analog Stereo'. But if I run xvidcap, I don't get that option in pavucontrol. kazam works a bit slow. It records at the beginning of the captured video. But for unknown reason, it eventually the sounds just go off. Also the video is not smooth as xvidcap. Though Kazam output as H64/MP4. Record my Desktop also doesn't give sound. Can you guys please help me, either - how to get sound with xvidcap or how kazam could be record nicely. I am looking something Camtasia, as used for Windows. Thanks in advance. Raihan

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  • Explanation of various domain name records?

    - by Kumar
    At the time of hosting, normally we just change name servers in the domain control panel. It's fine if both mail and web servers are the same. When they're different, we need to change the DNS records. When I try to point my blog to my domain name, I came to know about the various types of DNS records - A Records, AAA Records, MX Records, CNAME Records, NS Records, TXT Records, SRV Records, SOA Records, etc. I searched on Google, but would like to know more about these deeply. I found this link on the Internet - http://www.directnic.com/help/faq/?question_id=103 and got some idea about the different DNS records. But I have some more questions. How do the domain name records work? Is there any difference between NS record and other records in the way they work? Where should the NS record point to when using A record, CNAME record and MX record?

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  • What am I doing wrong with this use of StructLayout( LayoutKind.Explicit ) when calling a PInvoke st

    - by csharptest.net
    The following is a complete program. It works fine as long as you don't uncomment the '#define BROKEN' at the top. The break is due to a PInvoke failing to marshal a union correctly. The INPUT_RECORD structure in question has a number of substructures that might be used depending on the value in EventType. What I don't understand is that when I define only the single child structure of KEY_EVENT_RECORD it works with the explicit declaration at offset 4. But when I add the other structures at the same offset the structure's content get's totally hosed. //UNCOMMENT THIS LINE TO BREAK IT: //#define BROKEN using System; using System.Runtime.InteropServices; class ConIOBroken { static void Main() { int nRead = 0; IntPtr handle = GetStdHandle(-10 /*STD_INPUT_HANDLE*/); Console.Write("Press the letter: 'a': "); INPUT_RECORD record = new INPUT_RECORD(); do { ReadConsoleInputW(handle, ref record, 1, ref nRead); } while (record.EventType != 0x0001/*KEY_EVENT*/); Assert.AreEqual((short)0x0001, record.EventType); Assert.AreEqual(true, record.KeyEvent.bKeyDown); Assert.AreEqual(0x00000000, record.KeyEvent.dwControlKeyState & ~0x00000020);//strip num-lock and test Assert.AreEqual('a', record.KeyEvent.UnicodeChar); Assert.AreEqual((short)0x0001, record.KeyEvent.wRepeatCount); Assert.AreEqual((short)0x0041, record.KeyEvent.wVirtualKeyCode); Assert.AreEqual((short)0x001e, record.KeyEvent.wVirtualScanCode); } static class Assert { public static void AreEqual(object x, object y) { if (!x.Equals(y)) throw new ApplicationException(); } } [DllImport("Kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)] public static extern IntPtr GetStdHandle(int nStdHandle); [DllImport("Kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)] public static extern bool ReadConsoleInputW(IntPtr hConsoleInput, ref INPUT_RECORD lpBuffer, int nLength, ref int lpNumberOfEventsRead); [StructLayout(LayoutKind.Explicit)] public struct INPUT_RECORD { [FieldOffset(0)] public short EventType; //union { [FieldOffset(4)] public KEY_EVENT_RECORD KeyEvent; #if BROKEN [FieldOffset(4)] public MOUSE_EVENT_RECORD MouseEvent; [FieldOffset(4)] public WINDOW_BUFFER_SIZE_RECORD WindowBufferSizeEvent; [FieldOffset(4)] public MENU_EVENT_RECORD MenuEvent; [FieldOffset(4)] public FOCUS_EVENT_RECORD FocusEvent; //} #endif } [StructLayout(LayoutKind.Sequential)] public struct KEY_EVENT_RECORD { public bool bKeyDown; public short wRepeatCount; public short wVirtualKeyCode; public short wVirtualScanCode; public char UnicodeChar; public int dwControlKeyState; } [StructLayout(LayoutKind.Sequential)] public struct MOUSE_EVENT_RECORD { public COORD dwMousePosition; public int dwButtonState; public int dwControlKeyState; public int dwEventFlags; }; [StructLayout(LayoutKind.Sequential)] public struct WINDOW_BUFFER_SIZE_RECORD { public COORD dwSize; } [StructLayout(LayoutKind.Sequential)] public struct MENU_EVENT_RECORD { public int dwCommandId; } [StructLayout(LayoutKind.Sequential)] public struct FOCUS_EVENT_RECORD { public bool bSetFocus; } [StructLayout(LayoutKind.Sequential)] public struct COORD { public short X; public short Y; } } UPDATE: For those worried about the struct declarations themselves: bool is treated as a 32-bit value the reason for offset(4) on the data is to allow for the 32-bit structure alignment which prevents the union from beginning at offset 2. Again, my problem isn't making PInvoke work at all, it's trying to figure out why these additional structures (supposedly at the same offset) are fowling up the data by simply adding them.

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