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• user generated / user specific functions

  - by pedalpete

  I'm looking for the most elegant and secure method to do the following. I have a calendar, and groups of users. Users can add events to specific days on the calendar, and specify how long each event lasts for. I've had a few requests from users to add the ability for them to define that events of a specific length include a break, of a certain amount of time, or require that a specific amount of time be left between events. For example, if event is 2 hours, include a 20min break. for each event, require 30 minutes before start of next event. The same group that has asked for an event of 2 hours to include a 20 min break, could also require that an event 3 hours include a 30 minute break. In the end, what the users are trying to get is an elapsed time excluding breaks calculated for them. Currently I provide them a total elapsed time, but they are looking for a running time. However, each of these requests is different for each group. Where one group may want a 30 minute break during a 2 hour event, and another may want only 10 minutes for each 3 hour event. I was kinda thinking I could write the functions into a php file per group, and then include that file and do the calculations via php and then return a calculated total to the user, but something about that doesn't sit right with me. Another option is to output the groups functions to javascript, and have it run client-side, as I'm already returning the duration of the event, but where the user is part of more than one group with different rules, this seems like it could get rather messy. I currently store the start and end time in the database, but no 'durations', and I don't think I should be storing the calculated totals in the db, because if a group decides to change their calculations, I'd need to change it throughout the db. Is there a better way of doing this? I would just store the variables in mysql, but I don't see how I can then say to mysql to calculate based on those variables. I'm REALLY lost here. Any suggestions? I'm hoping somebody has done something similar and can provide some insight into the best direction. If it helps, my table contains eventid, user, group, startDate, startTime, endDate, endTime, type The json for the event which I return to the user is {"eventid":"'.$eventId.'", "user":"'.$userId.'","group":"'.$groupId.'","type":"'.$type.'","startDate":".$startDate.'","startTime":"'.$startTime.'","endDate":"'.$endDate.'","endTime":"'.$endTime.'","durationLength":"'.$duration.'", "durationHrs":"'.$durationHrs.'"} where for example, duration length is 2.5 and duration hours is 2:30.

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• access exception when invoking method of an anonymous class using java reflection

  - by Asaf David

  Hello I'm trying to use an event dispatcher to allow a model to notify subscribed listeners when it changes. the event dispatcher receives a handler class and a method name to call during dispatch. the presenter subscribes to the model changes and provide a Handler implementation to be called on changes. Here's the code (I'm sorry it's a bit long). EventDispacther: package utils; public class EventDispatcher<T> { List<T> listeners; private String methodName; public EventDispatcher(String methodName) { listeners = new ArrayList<T>(); this.methodName = methodName; } public void add(T listener) { listeners.add(listener); } public void dispatch() { for (T listener : listeners) { try { Method method = listener.getClass().getMethod(methodName); method.invoke(listener); } catch (Exception e) { System.out.println(e.getMessage()); } } } } Model: package model; public class Model { private EventDispatcher<ModelChangedHandler> dispatcher; public Model() { dispatcher = new EventDispatcher<ModelChangedHandler>("modelChanged"); } public void whenModelChange(ModelChangedHandler handler) { dispatcher.add(handler); } public void change() { dispatcher.dispatch(); } } ModelChangedHandler: package model; public interface ModelChangedHandler { void modelChanged(); } Presenter: package presenter; public class Presenter { private final Model model; public Presenter(Model model) { this.model = model; this.model.whenModelChange(new ModelChangedHandler() { @Override public void modelChanged() { System.out.println("model changed"); } }); } } Main: package main; public class Main { public static void main(String[] args) { Model model = new Model(); Presenter presenter = new Presenter(model); model.change(); } } Now, I except to get the "model changed" message. However, I'm getting an java.lang.IllegalAccessException: Class utils.EventDispatcher can not access a member of class presenter.Presenter$1 with modifiers "public". I understand that the class to blame is the anonymous class i created inside the presenter, however I don't know how to make it any more 'public' than it currently is. If i replace it with a named nested class it seem to work. It also works if the Presenter and the EventDispatcher are in the same package, but I can't allow that (several presenters in different packages should use the EventDispatcher) any ideas?

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• MySQL table organization and optimization (Rails)

  - by aguynamedloren

  I've been learning Ruby on Rails over the past few months with no prior programming experience. Lately, I've been thinking about database optimization and table organization. I know there are great books on the subject, but I typically learn by example / as I go. Here's a hypothetical situation: Let's say I am building a social network for a niche community with 250,000 members (users). The users have the ability to attend events. Let's say there are 50,000 past/present/future events. Much like Facebook events, a user can attend any number of events and an event can have any number of attendees. In the database, there would be a table for users and a table for events. Somehow I would have to create an association between the users and events. I could create an "events" column in the users table such that each user row would contain a hash of event IDs, or I could create an "attendees" column in the events table such that each event row would contain a hash of user IDs. Neither of these solutions seem ideal, however. On a users profile page, I want to display the list of events they are associated with, which would require scanning the 50,000 event rows for the user ID of said user if I include an "attendees" column in the events table. Likewise, on an event page, I want to display a list of attendees for the event, which would require scanning the 250,000 user rows for the event ID of said event if I include an "events" column in the users table. Option 3 would be to create a third table that contains the attendee information for each and every event - but I don't see how this would solve any problems. Are these non-issues? Rails makes accessing all of this information easy, but I guess I'm worried about scale. It is entirely possible that I am under-estimating the speed and processing power of modern databases / servers / etc. How long would it take to scan 250,000 user rows for specific event IDs - 10ms? 100ms? 1,000ms? I guess that's not that bad. Am I just over-thinking this?

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• Error in playing a swf file on internet explorer

  - by Rajeev

  In the below code i get an error saying Error #2007: Parameter url must be non-null on Ineternet explorer only.What am i doing wrong here html <OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" WIDTH="50" HEIGHT="50" id="myMovieName"> <PARAM NAME="movie" VALUE="/media/players/testsound.swf" /> <PARAM NAME="quality" VALUE="high" /> <PARAM NAME="bgcolor" VALUE="#FFFFFF" /> <EMBED href="/media/players/testsound.swf" src="/media/players/testsound.swf" flashvars="soundUrl=sound.mp3" quality=high bgcolor=#FFFFFF NAME="myMovieName" ALIGN="" TYPE="application/x-shockwave-flash"> </EMBED> </OBJECT> mxml ; import flash.net.; import mx.controls.Alert; import mx.controls.Button; import flash.events.Event; import flash.media.Sound; import flash.net.URLRequest; private function clickhandler(event:Event):void { var musicfile:String; var s:Sound = new Sound(); s.addEventListener(Event.COMPLETE, onSoundLoaded); var req:URLRequest = new URLRequest("/opt/cloodon/site/media/players/sound.mp3"); //musicfile = stage.loaderInfo.parameters["soundUrl"]; //var req:URLRequest = new URLRequest(musicfile); s.load(req); } private function onSoundLoaded(event:Event):void { //Alert.show("1"); //var localSound:Sound = event.currentTarget as Sound; var localSound:Sound = event.target as Sound; localSound.play(); } ]]> </fx:Script> <fx:Declarations> <!-- Place non-visual elements (e.g., services, value objects) here --> </fx:Declarations> <!--<mx:Button id="play" label="PLAY" click="clickhandler(event)" />--> <mx:Image id="loader1" source="@Embed(source='/opt/cloodon/site/media/img/speaker.gif')" click="clickhandler(event)" /> </s:Application>

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• How to listen for AffectsParentArrange events when you're not the parent

  - by Jeff B

  There is an attribute "AffectsParentArrange" that implicitly invalidates the parent's layout - but I want to attach an event handler to the "event" triggered by that attribute. When a child property with the attribute changes, the parent's arrangement is invalidated. I have a custom control (which is not the immediate parent) that needs to receive an event. Does anyone know of an event that can be used here? Do I need to provide a custom parent that overrides a method and fires an event?

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• manipulate variable made up of html before adding it to the dom (new in jQuery 1.4???)

  - by pedalpete

  I thought I had seen this in the first announcement of jQuery 1.4, but can't seem to find anything now. I have a calendar table which is built dynamically from a json ajax response. The table is built in a variable called putHtml. Currently, once the table is added to the DOM, I run a showEvents function which takes each event and adds it to the appropriate cell in the table. Unfortunately, when I have 100 events, that means I am updating the DOM 100 seperate times. Which is getting rather slow. I use the showEvents function to add events dynamically, so it would be really nice if I could just use the same function, and specify to look in the DOM for the cell to add the event to, or look in the variable (assuming I've got it right, and you can actually do this with jQuery). The code I use currenlty is this jQuery('div#calendars').append('putHtml.join('')); for(var e in thisCal.events){ showEvent(thisCal.events[e]); } What I had attempted to do instead was for(var e in thisCal.events){ showEvent(thisCal.events[e],putHtml); } jQuery('div#calendars').append('putHtml.join('')); the showEvents function looks like this function showEvents(event){ var eventDate=event.date; var eventTime=event.time; var eventGroup=event.group; var eventName=event.name; var eventType=event.type; var whereEvent=jQuery('div.a'+eventDate, 'table.'+eventGroup); var putEvent='<div class="event" id="a+'eventDate+'_'+eventTime+'">'+eventName+'</div>' jQuery(whereEvent, 'div#calendar').append(putEvent); if(eventType2){ jQuery(whereEvent, 'div#listings').append(putEvent); } } when attempting to manipulate the variable putHtml before adding to the dom, I was passing putHtml into the showEvent function, so instead of '(whereEvent, 'div#calendar'), I had (whereEvent, putHtml), but that didn't work. of course, the other method to accomplish this would be that when I make each cell, I iterate over the events json, and apply the appropriate html to the cell at the time, but that means repetitively running over the entire json in order to get the event to put in the cell. Is there another/better way to do something like this?

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• How to load dynamic events in Flex

  - by user309010

  Hi All, I have a small flex application. What I want to achieve is, I want my user to pass the script as a parameter. so he has the flexibility to do anything with the buttons-like add event, hide the other buttons. Something like this(below) <param name="script" value="import flash.events.Event;\n private function printMessage(event:Event):void {\nmessage.text += event.target.label + " pressed" + "\n";\n}"> Thanks.

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• Collecting IO outputs into list

  - by sisif

  how can i do multiple calls to SDL.pollEvent :: IO Event until the output is SDL.NoEvent and collect all the results into a list? in imperative terms something like this: events = [] event = SDL.pollEvent; while( event != SDL.NoEvent ) events.add( event ) event = SDL.pollEvent

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• Before the Summit of 2012

  - by Ajarn Mark Caldwell

  Today, Monday, was the first day of the PASS Summit Preconference training events, but instead I spent the day at the free SQL in the City event put on by Red Gate. For me this was not a financial decision (pre-con sessions cost extra above the general Summit registration) but rather a matter of interest.  I had already included money for pre-cons in this year’s training budget, but none of them really stood out to me, so even if the Red-Gate event were not going on at the same time, I probably would not have gone to any pre-cons this year.  However, the topics being presented at the SQL in the City event were of great interest to me.  There promised to be good information on Continuous Integration and automated deployment of database changes, which lately has been a real hot topic at my work.  And indeed, Red-Gate announced the release of a new tool (still in Early Access Program…a.k.a. Beta) which is called the Deployment Manager.  Since we are in the middle of a TFS implementation project, it will be interesting to see how this plays out and compares to what we put together with the automated builds in TFS.  But, as I understand it, the primary focus of Deployment Manager is not to be the Build process (Red Gate uses JetBrains’ Team City for that in their shop) but rather to aid in the deployment of those build packages, as well as providing easy rollback and a good visualization of which versions of software are in which environments.  It looks promising and I’ve already downloaded the installer package to play with it later. Overall, I was quite impressed with the SQL in the City event.  Having heard many current and past members of the PASS Board of Directors describe the challenges of putting on a large conference, and the growing pains that the PASS Summit has gone through, I am even more impressed that the Red Gate event ran as smoothly as it did.  And it is quite impressive the amount of money that Red Gate must have spent given that this was a no-charge event to attend, they had a very nice hot lunch, and the after-event drinks celebration.  Well done, folks! Of course it was great to hear from a variety of speakers.  Today I listened to some folks from Red Gate like Grant Fritchey (blog | @GFritchey) and David Atkinson (Product Manager for SQL Source Control and now the Deployment Manager tool set); and also Brent Ozar (blog | @BrentO) and Buck Woody (blog | @BuckWoody).  By the way, if you have never seen either Brent or Buck speak, you really should.  Different styles, but both are very entertaining and educational at the same time.  I love Buck’s sense of humor (here’s a tip…don’t be late to Buck’s session or you’ll become part of the presentation) and I praise Brent’s slides.  Brent’s style very much reminds me of that espoused by Garr Reynolds on his Presentation Zen blog (and book) and I am impressed that he can make a technical presentation so engaging. It was a great day, a great way to kick off the week, and I am excited to get into the full Summit!

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• SQLAuthority News – Presented Soft Skill Session on Presentation Skills at SQL Bangalore on May 3, 2014

  - by Pinal Dave

  I have presented on various database technologies for almost 10 years now. SQL, Database and NoSQL have been part of my life. Earlier this month, I had the opportunity to present on the topic Performing an Effective Presentation. I must say it was blast to prepare as well as present this session. This event was part of the SQL Bangalore community. If you are in Bangalore, you must be part of this group. SQL Bangalore is a wonderful community and we always have a great response when we present on technology. It is SQL User Group and we discuss everything SQL there. This month we had SQL Server 2014 theme and we had a community launch of SQL Server. We have the best of the best speakers presenting on SQL Server 2014 technology. The event had amazing speakers and each of them did justice to the subject. You can read about this over here. In this session I told a story from my life. I talked about who inspired me and how I learned to speak in public. I told stories about two legends  who have inspired me. There is no video recording of this session. If you want to get resources from this session, please sign up my newsletter at http://bit.ly/sqllearn. Well, I had a great time at this event. We had over 250 people showed up at this event and had a grand  time together. I personally enjoyed a session of Amit Benerjee, Balmukund Lakhani and Vinod Kumar. Ken and Surabh also entertained the audience. Overall, this was a grand event and if you were in Bangalore and did not make it to this event. You did miss out on a few things. Here are a few photos of this event. SQL Bangalore UG Nupur, Chandra, Shaivi, Balmukund, Amit, Vinod [captions This] SQL Bangalore UG Audience Pinal Dave presenting at SQL UG in Bangalore Here are few of the slides from this presentation: Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, T SQL

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• SQL SERVER – Get 2 of My Books FREE at Koenig Tech Day – Where Technologies Converge!

  - by pinaldave

  As a regular reader of my blog – you must be aware of that I love to write books and talk about various subjects of my book. The founders of Koenig Solutions are my very old friends, I know them for many years. They have been my biggest supporter of my books. Coming weekend they have a technology event at their Bangalore Location. Every attendee of the technology event will get a set of two books worth Rs. 450 – ‘SQL Server Interview Questions And Answers‘ and ‘SQL Wait Stats Joes 2 Pros‘. I am going to cover a couple of topics of the books and present  as well. I am very confident that every attendee will be having a great time. I will be covering following subjects: SQL Server Tricks and Tips for Blazing Fast Performance Slow Running Queries (SQL) are the most common problem that developers face while working with SQL Server. While it is easy to blame the SQL Server for unsatisfactory performance, however the issue often persists with the way queries have been written, and how SQL Server has been set up. The session will focus on the ways of identifying problems that slow down SQL Servers, and tricks to fix them. Developers will walk out with scripts and knowledge that can be applied to their servers, immediately post the session. After the session is over – I will point to what exact location in the book where you can continue for the further learning. I am pretty excited, this is more like book reading but in entire different format. The one day event will cover four technologies in four separate interactive sessions on: Microsoft SQL Server Security VMware/Virtualization ASP.NET MVC Date of the event: Dec 15, 2012 9 AM to 6PM. Location of the event:  Koenig Solutions Ltd. # 47, 4th Block, 100 feet Road, 3rd Floor, Opp to Shanthi Sagar, Koramangala, Bangalore- 560034 Mobile : 09008096122 Office : 080- 41127140 Organizers have informed me that there are very limited seats for this event and technical session based on my book will start at Sharp 9 AM. If you show up late there are chances that you will not get any seats. Registration for the event is a MUST. Please visit this link for further information. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, T SQL, Technology

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• Detect, Analyze, Act – Fast!

  - by Ajay Khanna

  In fast changing business environment, it becomes crucial to identify business opportunities and business issues as soon as possible. If identified at the right time, business managers can address issues before they escalate to serious problems and can take advantage of the new opportunities before the competition does. Moreover, they have to be efficient to do this at the right cost. Success depends on how responsive organization is to emerging events and changing environment. These events can be customer issues, competition moves, changes in regulations, or changes in company policies. In order to be responsive in such situations, organizations need to first identify and track these situations. They can do that via business activity monitoring (BAM) and complex event processing (CEP). A unified monitoring dashboard helps put together a comprehensive picture of the situation in hand and provides deep insight to take proper actions. With CEP, businesses can connect all the relevant events, detect event patterns and take immediate actions using Business Process Management system.   So to be responsive we need: Real-Time Visibility with Business Activity Monitoring You can use BAM technology to monitor progress, track performance, meet service-level agreements (SLAs), manage exceptions, and issue alerts to an employee or application when a process is not functioning properly—all in real time. A unified monitoring dashboard helps you maintain a complete picture of each situation so you can take action effectively. BAM works hand in hand with BPM software to discover the significant activities that drive business success.   Real-Time Sense and Respond An event-driven BPM solution enables each step in a business process to be informed not only by the previous step, but also by any other step, data, and pattern of behavior deemed relevant to that step. This gives the company the ability to “sense and respond.” You can describe interesting event patterns and event correlations and monitor the business in real-time. Whenever a pre-defined pattern emerges you can take actions like raising alerts, notifications, or kicking off another business process. This synergy possible by integrating activity monitoring, event processing, and BPM makes it possible for managers to keep a finger on the pulse of their business. Business managers can now respond to customers faster, respond to competition faster, reduce fraud and do more cross-selling. Read more about being responsive in the whitepaper “The Instantly Responsive Enterprise: Integrating BPM and Complex Event Processing” in BPM Resource Kit.

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• Power Your Cloud with Oracle Fusion Middleware

  - by user753488

  Introducing the biggest and most strategic event for Fusion Middleware this year: Power your Cloud with Oracle Fusion Middleware. Running in over 50 cities across the globe, this event is aimed at Architects, IT Managers, and technical leaders like you who are using Fusion Middleware or trying to learn more about middleware in the context of Cloud computing. Join us for a special kickoff on Wednesday, June 29th in Chicago for the first event in North America. This event features an exclusive keynote from Rick Schultz, VP of Technology Product Marketing. Cloud is certainly all the rage. But what can we make of it? According to Alex Andrianopoulos, Vice President Product Marketing for Fusion Middleware states, “Not since Java was unveiled have we seen something so transformative hit the industry. The promised benefits of Cloud are many, significant, and deliver value to both IT organizations as well as the Line of Business. The benefits range from lower data center costs, to significantly reduced environmental impact, to the ability to capture more of the opportunities that market present through increased agility in resource deployment and dramatically reduced time to market.” With an ROI so promising, why isn’t everyone on Cloud already? It’s a question a lot of IT managers are struggling with. While the promised benefits of Cloud computing can be immense, achieving them requires much more than the adoption of a new architecture, or the virtualization of servers, or the outsourcing of some or all of the IT resources. These may be useful steps towards moving to a Cloud computing blueprint, but on their own do not deliver Cloud computing and its associated benefits to the enterprise. This is exactly what we’ll be addressing in the event series, ways you can leverage Complete, Open and Integrated capabilities of Oracle Fusion Middleware today to get one step closer to Cloud. Whether you’re: Leveraging Exalogic Elastic Cloud to consolidate your applications Improving agility with Oracle SOA to generate a foundation for shared data services Securing and managing your Cloud using Oracle Identity Management and Oracle Enterprise Manager Migrating from mainframe to Cloud using Oracle Tuxedo, Coherence and GoldenGate Building applications in the Cloud swiftly and easier with Oracle’s WebCenter Suite Join us for the first of its kind event in Chicago this week by registering now, or find an event near you. Learn more about Oracle Fusion Middleware and Cloud computing today on the Oracle.com website by going to http://www.Oracle.com/goto/Middleware4Cloud

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• Sampling SQL server batch activity

  - by extended_events

  Recently I was troubleshooting a performance issue on an internal tracking workload and needed to collect some very low level events over a period of 3-4 hours.  During analysis of the data I found that a common pattern I was using was to find a batch with a duration that was longer than average and follow all the events it produced.  This pattern got me thinking that I was discarding a substantial amount of event data that had been collected, and that it would be great to be able to reduce the collection overhead on the server if I could still get all activity from some batches. In the past I’ve used a sampling technique based on the counter predicate to build a baseline of overall activity (see Mikes post here).  This isn’t exactly what I want though as there would certainly be events from a particular batch that wouldn’t pass the predicate.  What I need is a way to identify streams of work and select say one in ten of them to watch, and sql server provides just such a mechanism: session_id.  Session_id is a server assigned integer that is bound to a connection at login and lasts until logout.  So by combining the session_id predicate source and the divides_by_uint64 predicate comparator we can limit collection, and still get all the events in batches for investigation. CREATE EVENT SESSION session_10_percent ON SERVER ADD EVENT sqlserver.sql_statement_starting(     WHERE (package0.divides_by_uint64(sqlserver.session_id,10))), ADD EVENT sqlos.wait_info (        WHERE (package0.divides_by_uint64(sqlserver.session_id,10))), ADD EVENT sqlos.wait_info_external (        WHERE (package0.divides_by_uint64(sqlserver.session_id,10))), ADD EVENT sqlserver.sql_statement_completed(     WHERE (package0.divides_by_uint64(sqlserver.session_id,10))) ADD TARGET ring_buffer WITH (MAX_DISPATCH_LATENCY=30 SECONDS,TRACK_CAUSALITY=ON) GO   There we go; event collection is reduced while still providing enough information to find the root of the problem.  By the way the performance issue turned out to be an IO issue, and the session definition above was more than enough to show long waits on PAGEIOLATCH*.        

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• jQuery Context Menu Plugin and Capturing Right-Click

  - by Ben Griswold

  I was thrilled to find Cory LaViska’s jQuery Context Menu Plugin a few months ago. In very little time, I was able to integrate the context menu with the jQuery Treeview.  I quickly had a really pretty user interface which took full advantage of limited real estate.  And guess what.  As promised, the plugin worked in Chrome, Safari 3, IE 6/7/8, Firefox 2/3 and Opera 9.5.  Everything was perfect and I shipped to the Integration Environment. One thing kept bugging though – right clicks aren’t the standard in a web environment. Sure, when one hovers over the treeview node, the mouse changed from an arrow to a pointer, but without help text most users will certainly left-click rather than right. As I was already doubting the design decision, we did some Mac testing.  The context menu worked in Firefox but not Safari.  Damn.  That’s when I started digging into the Madness of Javascript Mouse Events.  Don’t tell, but it’s complicated.  About as close as one can get to capture the right-click mouse event on all major browsers on Windows and Mac is this: if (event.which == null) /* IE case */ button= (event.button < 2) ? "LEFT" : ((event.button == 4) ? "MIDDLE" : "RIGHT"); else /* All others */ button= (event.which < 2) ? "LEFT" : ((event.which == 2) ? "MIDDLE" : "RIGHT"); Yikes.  The content menu code was simply checking if event.button == 2.  No problem.  Cory offers a jQuery Right Click Plugin which I’m sure works for windows but probably not the Mac either.  (Please note I haven’t verified this.) Anyway, I decided to address my UI design concern and the Safari Mac issue in one swoop.  I decided to make the context menu respond to any mouse click event.  This didn’t take much – especially after seeing how Bill Beckelman updated the library to recognize the left click. First, I added an AnyClick option to the library defaults: // Any click may trigger the dropdown and that's okay // See Javascript Madness: Mouse Events – http: //unixpapa.com/js/mouse.html if (o.anyClick == undefined) o.anyClick = false; And then I trigger the context menu dropdown based on the following conditional: if (evt.button == 2 || o.anyClick) { Nothing tricky about that, right?  Finally, I updated my menu setup to include the AnyClick value, if true: $('.member').contextMenu({ menu: 'memberContextMenu', anyClick: true },             function (action, el, pos) {                 … Now the context menu works in “all” environments if you left, right or even middle click.  Download jQuery Context Menu Plugin for Any Click *Opera 9.5 has an option to allow scripts to detect right-clicks, but it is disabled by default. Furthermore, Opera still doesn’t allow JavaScript to disable the browser’s default context menu which causes a usability conflict.

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• Does my use of the strategy pattern violate the fundamental MVC pattern in iOS?

  - by Goodsquirrel

  I'm about to use the 'strategy' pattern in my iOS app, but feel like my approach violates the somehow fundamental MVC pattern. My app is displaying visual "stories", and a Story consists (i.e. has @properties) of one Photo and one or more VisualEvent objects to represent e.g. animated circles or moving arrows on the photo. Each VisualEvent object therefore has a eventType @property, that might be e.g. kEventTypeCircle or kEventTypeArrow. All events have things in common, like a startTime @property, but differ in the way they are being drawn on the StoryPlayerView. Currently I'm trying to follow the MVC pattern and have a StoryPlayer object (my controller) that knows about both the model objects (like Story and all kinds of visual events) and the view object StoryPlayerView. To chose the right drawing code for each of the different visual event types, my StoryPlayer is using a switch statement. @implementation StoryPlayer // (...) - (void)showVisualEvent:(VisualEvent *)event onStoryPlayerView:storyPlayerView { switch (event.eventType) { case kEventTypeCircle: [self showCircleEvent:event onStoryPlayerView:storyPlayerView]; break; case kEventTypeArrow: [self showArrowDrawingEvent:event onStoryPlayerView:storyPlayerView]; break; // (...) } But switch statements for type checking are bad design, aren't they? According to Uncle Bob they lead to tight coupling and can and should almost always be replaced by polymorphism. Having read about the "Strategy"-Pattern in Head First Design Patterns, I felt this was a great way to get rid of my switch statement. So I changed the design like this: All specialized visual event types are now subclasses of an abstract VisualEvent class that has a showOnStoryPlayerView: method. @interface VisualEvent : NSObject - (void)showOnStoryPlayerView:(StoryPlayerView *)storyPlayerView; // abstract Each and every concrete subclass implements a concrete specialized version of this drawing behavior method. @implementation CircleVisualEvent - (void)showOnStoryPlayerView:(StoryPlayerView *)storyPlayerView { [storyPlayerView drawCircleAtPoint:self.position color:self.color lineWidth:self.lineWidth radius:self.radius]; } The StoryPlayer now simply calls the same method on all types of events. @implementation StoryPlayer - (void)showVisualEvent:(VisualEvent *)event onStoryPlayerView:storyPlayerView { [event showOnStoryPlayerView:storyPlayerView]; } The result seems to be great: I got rid of the switch statement, and if I ever have to add new types of VisualEvents in the future, I simply create new subclasses of VisualEvent. And I won't have to change anything in StoryPlayer. But of cause this approach violates the MVC pattern since now my model has to know about and depend on my view! Now my controller talks to my model and my model talks to the view calling methods on StoryPlayerView like drawCircleAtPoint:color:lineWidth:radius:. But this kind of calls should be controller code not model code, right?? Seems to me like I made things worse. I'm confused! Am I completely missing the point of the strategy pattern? Is there a better way to get rid of the switch statement without breaking model-view separation?

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• Implement date picker and time picker in button click and store in edit text boxes

  - by user3597791

  Hi I am trying to implement a date picker and time picker in button click and store in edit text boxes. I have tried numerous things but since i suck at coding I cant get any of them to work. Please find my class and xml below and i would be grateful for any help import android.app.Activity; import android.content.Intent; import android.database.Cursor; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.provider.MediaStore; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.ImageView; import android.widget.Toast; public class NewEvent extends Activity { private static int RESULT_LOAD_IMAGE = 1; private EventHandler handler; private String picturePath = ""; private String name; private String place; private String date; private String time; private String photograph; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.new_event); handler = new EventHandler(getApplicationContext()); ImageView iv_user_photo = (ImageView) findViewById(R.id.iv_user_photo); iv_user_photo.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); startActivityForResult(intent, RESULT_LOAD_IMAGE); } }); Button btn_add = (Button) findViewById(R.id.btn_add); btn_add.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { EditText et_name = (EditText) findViewById(R.id.et_name); name = et_name.getText().toString(); EditText et_place = (EditText) findViewById(R.id.et_place); place = et_place.getText().toString(); EditText et_date = (EditText) findViewById(R.id.et_date); date = et_date.getText().toString(); EditText et_time = (EditText) findViewById(R.id.et_time); time = et_time.getText().toString(); ImageView iv_photograph = (ImageView) findViewById(R.id.iv_user_photo); photograph = picturePath; Event event = new Event(); event.setName(name); event.setPlace(place); event.setDate(date); event.setTime(time); event.setPhotograph(photograph); Boolean added = handler.addEventDetails(event); if(added){ Intent intent = new Intent(NewEvent.this, MainEvent.class); startActivity(intent); }else{ Toast.makeText(getApplicationContext(), "Event data not added. Please try again", Toast.LENGTH_LONG).show(); } } }); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) { Uri imageUri = data.getData(); String[] filePathColumn = { MediaStore.Images.Media.DATA }; Cursor cursor = getContentResolver().query(imageUri, filePathColumn, null, null, null); cursor.moveToFirst(); int columnIndex = cursor.getColumnIndex(filePathColumn[0]); picturePath = cursor.getString(columnIndex); cursor.close(); Here is my xml: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:padding="10dp"> <TextView android:id="@+id/tv_new_event_title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Add New Event" android:textAppearance="?android:attr/textAppearanceLarge" android:layout_alignParentTop="true" /> <Button android:id="@+id/btn_add" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Add Event" android:layout_alignParentBottom="true" /> <ScrollView android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/tv_new_event_title" android:layout_above="@id/btn_add"> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical"> <ImageView android:id="@+id/iv_user_photo" android:src="@drawable/add_user_icon" android:layout_width="100dp" android:layout_height="100dp"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Event:" /> <EditText android:id="@+id/et_name" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10" android:inputType="text" > <requestFocus /> </EditText> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Place:" /> <EditText android:id="@+id/et_place" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10" android:inputType="text" > <requestFocus /> </EditText> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Date:" /> <EditText android:id="@+id/et_date" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10" android:inputType="date" /> <Button android:id="@+id/button" style="?android:attr/buttonStyleSmall" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button" /> <requestFocus /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Time:" /> <EditText android:id="@+id/et_time" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10" android:inputType="time" /> <Button android:id="@+id/button1" style="?android:attr/buttonStyleSmall" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button1" /> <requestFocus /> </LinearLayout> </ScrollView> </RelativeLayout>

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• WPF: Running code when Window rendering is completed

  - by Ilya Verbitskiy

  WPF is full of surprises. It makes complicated tasks easier, but at the same time overcomplicates easy  task as well. A good example of such overcomplicated things is how to run code when you’re sure that window rendering is completed. Window Loaded event does not always work, because controls might be still rendered. I had this issue working with Infragistics XamDockManager. It continued rendering widgets even when the Window Loaded event had been raised. Unfortunately there is not any “official” solution for this problem. But there is a trick. You can execute your code asynchronously using Dispatcher class.   Dispatcher.BeginInvoke(new Action(() => Trace.WriteLine("DONE!", "Rendering")), DispatcherPriority.ContextIdle, null);   This code should be added to your Window Loaded event handler. It is executed when all controls inside your window are rendered. I created a small application to prove this idea. The application has one window with a few buttons. Each button logs when it has changed its actual size. It also logs when Window Loaded event is raised, and, finally, when rendering is completed. Window’s layout is straightforward.   1: <Window x:Class="OnRendered.MainWindow" 2: xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 3: xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 4: Title="Run the code when window rendering is completed." Height="350" Width="525" 5: Loaded="OnWindowLoaded"> 6: <Window.Resources> 7: <Style TargetType="{x:Type Button}"> 8: <Setter Property="Padding" Value="7" /> 9: <Setter Property="Margin" Value="5" /> 10: <Setter Property="HorizontalAlignment" Value="Center" /> 11: <Setter Property="VerticalAlignment" Value="Center" /> 12: </Style> 13: </Window.Resources> 14: <StackPanel> 15: <Button x:Name="Button1" Content="Button 1" SizeChanged="OnSizeChanged" /> 16: <Button x:Name="Button2" Content="Button 2" SizeChanged="OnSizeChanged" /> 17: <Button x:Name="Button3" Content="Button 3" SizeChanged="OnSizeChanged" /> 18: <Button x:Name="Button4" Content="Button 4" SizeChanged="OnSizeChanged" /> 19: <Button x:Name="Button5" Content="Button 5" SizeChanged="OnSizeChanged" /> 20: </StackPanel> 21: </Window>   SizeChanged event handler simply traces that the event has happened.   1: private void OnSizeChanged(object sender, SizeChangedEventArgs e) 2: { 3: Button button = (Button)sender; 4: Trace.WriteLine("Size has been changed", button.Name); 5: }   Window Loaded event handler is slightly more interesting. First it scheduler the code to be executed using Dispatcher class, and then logs the event.   1: private void OnWindowLoaded(object sender, RoutedEventArgs e) 2: { 3: Dispatcher.BeginInvoke(new Action(() => Trace.WriteLine("DONE!", "Rendering")), DispatcherPriority.ContextIdle, null); 4: Trace.WriteLine("Loaded", "Window"); 5: }   As the result I had seen these trace messages.   1: Button5: Size has been changed 2: Button4: Size has been changed 3: Button3: Size has been changed 4: Button2: Size has been changed 5: Button1: Size has been changed 6: Window: Loaded 7: Rendering: DONE!   You can find the solution in GitHub.

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• Qt drag & drop button; drop not detecting

  - by Thomas Verbeke

  I'm creating a 2D game in QT and i'm trying to implement a drag & drop into my program. For some reason the drop is not registered: qDebug should print a message on dropping but this doesn't happen. #include "dialog.h" #include "ui_dialog.h" #include "world.h" #include <vector> Dialog::Dialog(QWidget *parent) : QDialog(parent), ui(new Ui::Dialog) { ui->setupUi(this); scene = new QGraphicsScene(this); ui->graphicsView->setScene(scene); MySquare *item; QGraphicsRectItem *enemyItem; World *myWorld = new World(); std::vector<Tile*> tiles = myWorld->createWorld(":/texture.jpg"); int count = 0; foreach (Tile *tile, tiles){ count++; item = new MySquare(tile->getXPos()*4,tile->getYPos()*4,4,4); item->setBrush(QColor(tile->getValue()*255,tile->getValue()*255,tile->getValue()*255)); item->setAcceptDrops(true); scene->addItem(item); } player = new MySquare(10,20,10,10); player->setAcceptDrops(true); scene->addItem(player); //drag & drop part QPushButton *pushButton = new QPushButton("Click Me",this); connect(pushButton,SIGNAL(pressed()),this,SLOT(makeDrag())); setAcceptDrops(true); } void Dialog::makeDrag() { QDrag *dr = new QDrag(this); // The data to be transferred by the drag and drop operation is contained in a QMimeData object QMimeData *data = new QMimeData; data->setText("This is a test"); // Assign ownership of the QMimeData object to the QDrag object. dr->setMimeData(data); // Start the drag and drop operation dr->start(); } mysquare.cpp #include "mysquare.h" MySquare::MySquare(int _x,int _y, int _w, int _h) { isPlayer=false; Pressed=false; setFlag(ItemIsMovable); setFlag(ItemIsFocusable); setAcceptDrops(true); color=Qt::red; color_pressed = Qt::green; x = _x; y = _y; w = _w; h = _h; } QRectF MySquare::boundingRect() const { return QRectF(x,y,w,h); } void MySquare::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { QRectF rec = boundingRect(); QBrush brush(color); if (Pressed){ brush.setColor(color); } else { brush.setColor(color_pressed); } painter->fillRect(rec,brush); painter->drawRect(rec); } void MySquare::mousePressEvent(QGraphicsSceneMouseEvent *event) { Pressed=true; update(); QGraphicsItem::mousePressEvent(event); qDebug() << "mouse Pressed"; } void MySquare::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) { Pressed=false; update(); QGraphicsItem::mousePressEvent(event); qDebug() << "mouse Released"; } void MySquare::keyPressEvent(QKeyEvent *event){ int x = pos().x(); int y = pos().y(); //key handling QGraphicsItem::keyPressEvent(event); } void MySquare::dropEvent(QDropEvent *event) { qDebug("dropEvent - square"); // Unpack dropped data and handle it the way you want qDebug("Contents: %s", event->mimeData()->text().toLatin1().data()); } void MySquare::dragMoveEvent(QDragMoveEvent *event){ qDebug("dragMoveEvent - square "); event->accept(); } void MySquare::dragEnterEvent(QDragEnterEvent *event){ event->setAccepted(true); qDebug("dragEnterEvent - square"); event->acceptProposedAction(); } void MySquare::setBrush(QColor _color){ color = _color; color_pressed = _color; update(); //repaint } edit; there is no problem with qDebug() i'm just using it to test them i'm inside the drag events..which i'm not

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• what is the best way to use loops to detect events while the main loop is running?

  - by yao jiang

  I am making an "game" that has pathfinding using pygame. I am using Astar algo. I have a main loop which draws the whole map. In the loop I check for events. If user press "enter" or "space", random start and end are selected, then animation starts and it will try to get from start to end. My draw function is stupid as hell right now, it works as expected but I feel that I am doing it wrong. It'll draw everything to the end of the animation. I am also detecting events in there as well. What is a better way of implementing the draw function such that it will draw one "step" at a time while checking for events? animating = False; while loop: check events: if not animating: # space or enter press will choose random start/end coords if enter_pressed or space_pressed: start, end = choose_coords route = find_route(start, end) draw(start, end, grid, route) else: # left click == generate an event to block the path # right click == user can choose a new destination if left_mouse_click: gen_event() reroute() elif right_mouse_click: new_end = new_end() new_start = current_pos() route = find_route(new_start, new_end) draw(new_start, new_end, grid, route) # draw out the grid def draw(start, end, grid, route_coord): # draw the end coords color = red; pick_image(screen, color, width*end[1],height*end[0]); pygame.display.flip(); # then draw the rest of the route for i in range(len(route_coord)): # pausing because we want animation time.sleep(speed); # get the x/y coords x,y = route_coord[i]; event_on = False; if grid[x][y] == 2: color = green; elif grid[x][y] == 3: color = blue; for event in pygame.event.get(): if event.type == pygame.MOUSEBUTTONDOWN: if event.button == 3: print "destination change detected, rerouting"; # get mouse position, px coords pos = pygame.mouse.get_pos(); # get grid coord c = pos[0] // width; r = pos[1] // height; grid[r][c] = 4; end = [r, c]; elif event.button == 1: print "user generated event"; pos = pygame.mouse.get_pos(); # get grid coord c = pos[0] // width; r = pos[1] // height; # mark it as a block for now grid[r][c] = 1; event_on = True; if check_events([x,y]) or event_on: # there is an event # mark it as a block for now grid[y][x] = 1; pick_image(screen, event_x, width*y, height*x); pygame.display.flip(); # then find a new route new_start = route_coord[i-1]; marked_grid, route_coord = find_route(new_start, end, grid); draw(new_start, end, grid, route_coord); return; # just end draw here so it wont throw the "index out of range" error elif grid[x][y] == 4: color = red; pick_image(screen, color, width*y, height*x); pygame.display.flip(); # clear route coord list, otherwise itll just add more unwanted coords route_coord_list[:] = [];

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• Server-Sent Events using GlassFish (TOTD #179)

  - by arungupta

  Bhakti blogged about Server-Sent Events on GlassFish and I've been planning to try it out for past some days. Finally, I took some time out today to learn about it and build a simplistic example showcasing the touch points. Server-Sent Events is developed as part of HTML5 specification and provides push notifications from a server to a browser client in the form of DOM events. It is defined as a cross-browser JavaScript API called EventSource. The client creates an EventSource by requesting a particular URL and registers an onmessage event listener to receive the event notifications. This can be done as shown var url = 'http://' + document.location.host + '/glassfish-sse/simple';eventSource = new EventSource(url);eventSource.onmessage = function (event) { var theParagraph = document.createElement('p'); theParagraph.innerHTML = event.data.toString(); document.body.appendChild(theParagraph);} This code subscribes to a URL, receives the data in the event listener, adds it to a HTML paragraph element, and displays it in the document. This is where you'll parse JSON and other processing to display if some other data format is received from the URL. The URL to which the EventSource is subscribed to is updated on the server side and there are multipe ways to do that. GlassFish 4.0 provide support for Server-Sent Events and it can be achieved registering a handler as shown below: @ServerSentEvent("/simple")public class MySimpleHandler extends ServerSentEventHandler { public void sendMessage(String data) { try { connection.sendMessage(data); } catch (IOException ex) { . . . } }} And then events can be sent to this handler using a singleton session bean as shown: @Startup@Statelesspublic class SimpleEvent { @Inject @ServerSentEventContext("/simple") ServerSentEventHandlerContext<MySimpleHandler> simpleHandlers; @Schedule(hour="*", minute="*", second="*/10") public void sendDate() { for(MySimpleHandler handler : simpleHandlers.getHandlers()) { handler.sendMessage(new Date().toString()); } }} This stateless session bean injects ServerSentEventHandlers listening on "/simple" path. Note, there may be multiple handlers listening on this path. The sendDate method triggers every 10 seconds and send the current timestamp to all the handlers. The client side browser simply displays the string. The HTTP request headers look like: Accept: text/event-streamAccept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3Accept-Encoding: gzip,deflate,sdchAccept-Language: en-US,en;q=0.8Cache-Control: no-cacheConnection: keep-aliveCookie: JSESSIONID=97ff28773ea6a085e11131acf47bHost: localhost:8080Referer: http://localhost:8080/glassfish-sse/faces/index2.xhtmlUser-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.54 Safari/536.5 And the response headers as: Content-Type: text/event-streamDate: Thu, 14 Jun 2012 21:16:10 GMTServer: GlassFish Server Open Source Edition 4.0Transfer-Encoding: chunkedX-Powered-By: Servlet/3.0 JSP/2.2 (GlassFish Server Open Source Edition 4.0 Java/Apple Inc./1.6) Notice, the MIME type of the messages from server to the client is text/event-stream and that is defined by the specification. The code in Bhakti's blog can be further simplified by using the recently-introduced Twitter API for Java as shown below: @Schedule(hour="*", minute="*", second="*/10") public void sendTweets() { for(MyTwitterHandler handler : twitterHandler.getHandlers()) { String result = twitter.search("glassfish", String.class); handler.sendMessage(result); }} The complete source explained in this blog can be downloaded here and tried on GlassFish 4.0 build 34. The latest promoted build can be downloaded from here and the complete source code for the API and implementation is here. I tried this sample on Chrome Version 19.0.1084.54 on Mac OS X 10.7.3.

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• SQLAuthority News – #TechEdIn – TechEd India 2012 Memories and Photos

  - by pinaldave

  TechEd India 2012 was held in Bangalore last March 21 to 23, 2012. Just like every year, this event is bigger, grander and inspiring. Pinal Dave at TechEd India 2012 Family Event Every single year, TechEd is a special affair for my entire family.  Four months before the start of TechEd, I usually start to build the mental image of the event. I start to think  about various things. For the most part, what excites me most is presenting a session and meeting friends. Seriously, I start thinking about presenting my session 4 months earlier than the event!  I work on my presentation day and night. I want to make sure that what I present is accurate and that I have experienced it firsthand. My wife and my daughter also contribute to my efforts. For us, TechEd is a family event, and the two of them feel equally responsible as well. They give up their family time so I can bring out the best content for the Community. Pinal, Shaivi and Nupur at TechEd India 2012 Guinea Pigs (My Experiment Victims) I do not rehearse my session, ever. However, I test my demo almost every single day till the last moment that I have to present it already. I sometimes go over the demo more than 2-3 times a day even though the event is more than a month away. I have two “guinea pigs”: 1) Nupur Dave and 2) Vinod Kumar. When I am at home, I present my demos to my wife Nupur. At times I feel that people often backup their demo, but in my case, I have backup demo presenters. In the office during lunch time, I present the demos to Vinod. I am sure he can walk my demos easily with eyes closed. Pinal and Vinod at TechEd India 2012 My Sessions I’ve been determined to present my sessions in a real and practical manner. I prefer to present the subject that I myself would be eager to attend to and sit through if I were an audience. Just keeping that principle in mind, I have created two sessions this year. SQL Server Misconception and Resolution Pinal and Vinod at TechEd India 2012 We believe all kinds of stuff – that the earth is flat, or that the forbidden fruit is apple, or that the big bang theory explains the origin of the universe, and so many other things. Just like these, we have plenty of misconceptions in SQL Server as well. I have had this dream of co-presenting a session with Vinod Kumar for the past 3 years. I have been asking him every year if we could present a session together, but we never got it to work out, until this year came. Fortunately, we got a chance to stand on the same stage and present a single subject.  I believe that Vinod Kumar and I have an excellent synergy when we are working together. We know each other’s strengths and weakness. We know when the other person will speak and when he will keep quiet. The reason behind this synergy is that we have worked on 2 Video Learning Courses (SQL Server Indexes and SQL Server Questions and Answers) and authored 1 book (SQL Server Questions and Answers) together. Crowd Outside Session Hall This session was inspired from the “Laurel and Hardy” show so we performed a role-playing of those famous characters. We had an excellent time at the stage and, for sure, the audience had a wonderful time, too. We had an extremely large audience for this session and had a great time interacting with them. Speed Up! – Parallel Processes and Unparalleled Performance Pinal Dave at TechEd India 2012 I wanted to approach this session at level 400 and I was very determined to do so. The biggest challenge I had was that this was a total of 60 minutes of session and the audience profile was very generic. I had to present at level 100 as well at 400. I worked hard to tune up these demos. I wanted to make sure that my messages would land perfectly to the minds of the attendees, and when they walk out of the session, they could use the knowledge I shared on their servers. After the session, I felt an extreme satisfaction as I received lots of positive feedback at the event. At one point, so many people rushed towards me that I was a bit scared that the stage might break and someone would get injured. Fortunately, nothing like that happened and I was able to shake hands with everybody. Pinal Dave at TechEd India 2012 Crowd rushing to Pinal at TechEd India 2012 Networking This is one of the primary reasons many of us visit the annual TechEd event. I had a fantastic time meeting SQL Server enthusiasts. Well, it was a terrific time meeting old friends, user group members, MVPs and SQL Enthusiasts. I have taken many photographs with lots of people, but I have received a very few back. If you are reading this blog and have a photo of us at the event, would you please send it to me so I could keep it in my memory lane? SQL Track Speaker: Jacob and Pinal at TechEd India 2012 SQL Community: Pinal, Tejas, Nakul, Jacob, Balmukund, Manas, Sudeepta, Sahal at TechEd India 2012 Star Speakers: Amit and Balmukund at TechEd India 2012 TechED Rockstars: Nakul, Tejas and Pinal at TechEd India 2012 I guess TechEd is a mix of family affair and culture for me! Hamara TechEd (Our TechEd) Please tell me which photo you like the most! Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, SQLServer, T SQL, Technology Tagged: TechEd, TechEdIn

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• Upcoming User Group Events in 2011

  - by john.orourke(at)oracle.com

  At a recent customer event, someone asked me if Oracle had any plans to re-create the Hyperion Solutions Conference.  Unfortunately the answer is no.  With so many different product lines it would be challenging and costly for Oracle to run separate user conferences for every product line, and it would create too many events for customers with multiple products to attend.  So Oracle Open World is the company's main event for showcasing what's new and what's coming across all product lines.  If customers find Oracle OpenWorld too overwhelming or if the timing is bad, there are a number of other conferences, which are run by Oracle user groups and include a number of sessions focused on Oracle Hyperion EPM and BI products.  Here's a sneak preview of what's coming up for conferences in 2011 where you can network with other Hyperion users and learn what's new and what's coming in our products. Alliance 2011:  This conference is run by the Oracle Higher Education User Group (HEUG).  It's being held March 27 - 30th in lovely Denver, Colorado.  (a great location and time for skiers!)  This event is targeted at customers in Higher Education and Public Sector organizations and is expecting to draw over 3,500 attendees.  There will be a number of sessions focusing on Oracle Hyperion EPM and BI products in the Budgeting track, as well as the Reporting & BI track.  This includes product-focused sessions delivered by Oracle and partners, as well as case studies delivered by customers.  Here's a link to the registration page where you can get more information: http://www.heug.org/p/cm/ld/fid=255 Collaborate 2011:  This conference is run by three different user groups;  OAUG, IOUG and Quest.  It's being held April 10 - 14th in sunny Orlando, Florida.  (yes, sunshine and warmth!)  This event is targeted to customers with Oracle E-Business Suite, PeopleSoft, JD Edwards, Hyperion, Primavera and other products and is expected to draw over 5,000 attendees.  You'll find a number of sessions focused on Oracle Hyperion EPM and BI products in the BI/Data Warehousing/EPM track.  This includes product-focused sessions delivered by Oracle, our partners, and customers as well as a number of customer case studies.  There will also be an exhibit area with a number of demo pods focused on EPM and BI products.  Here's a link to the conference web site where you can get more information: http://collaborate.oaug.org/ Also, please note that the OAUG has a Hyperion SIG that runs focused EPM/Hyperion events throughout the year.  Here's a link to their web site where you can get more information: http://hyperionsig.oaug.org/ Kscope 2011:  Formerly the Kaleidoscope conference, this one is run by the Oracle Developer Tools User Group (ODTUG).  This conference is being held June 26 - 30th in Long Beach, CA. (surf's up!)  Historically, this event has focused on Oracle Development tools, but over the past few years the EPM and BI content has grown with over 100 sessions planned this year.  So this event is becoming a great venue for existing Hyperion customers to learn about the latest developments with Oracle Essbase, Hyperion Planning, Hyperion Financial Management, Oracle BI and other products.   You'll also find hands-on workshops, product demonstrations as well as EPM and BI Symposiums run by Oracle Development staff.  Here's a link to the web site where you can get more details.  http://www.kscope11.com/biepm UKOUG Conference Series:  EPM and Hyperion 2011:  For Hyperion customers in the UK, the UKOUG has a Hyperion SIG that runs a focused conference for EPM and Hyperion products.  The 2011 event is planned for June in London.  Here's a link to the web site for this event where you can get more information: http://hyperion.ukoug.org/default.asp?p=8461 In addition to these conferences, you can also find Oracle EPM and BI content at regional user group meetings globally as well as Marketing events run by Oracle.  Check the events page at www.oracle.com for the details on upcoming Marketing and regional User Group events.  So while Oracle will not be trying to replicate the Hyperion Solutions conference, the good news is that there are a number of other events available where customers can find out what's new and what's coming with Oracle EPM and BI products.  And these events are running at different times of the year in different locations - so you can pick the event that makes the most sense for your company from a timing and location standpoint. I'll be delivering a number of sessions at the Alliance and Collaborate conferences and hope to see many of our loyal customers and partners at these events.  And there's always Oracle OpenWorld coming up in October, for which the planning has already started.  I look forward to seeing you in 2011.

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• TSM Backup Fails with VSS

  - by user176320

  Since we rebuilt our servers to windows servers 2008 x64 r2 we have perpetual problems with scheduled backup (shadow copy). In the Application event log, the following events are logged on both nodes: The description for Event ID 4112 from source TsmVssPlugin cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer. If the event originated on another computer, the display information had to be saved with the event. The following information was included with the event: VSS processing encountered error 'VSS_E_UNEXPECTED_PROVIDER_ERROR' in the Volume Shadow Copy API 'AddToSnapshotSet'. For more information, see the IBM Tivoli Storage Manager client error log. Re installing TSM didn't change anything and still logging same events. TSM Error log file shows following: ANS1327W The snapshot operation for 'C:' failed with error code: -1. ANS5250E An unexpected error was encountered. TSM function name : BaStartSnapshot TSM function : initializeSnapshotSet() failed, check Microsoft Application event log for VSS errors TSM return code : -1

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• WPF: Checkbox in a ListView/Gridview--How to Get ListItem in Checked/Unchecked Event?

  - by Phil Sandler

  In the code behind's CheckBox_Checked and CheckBox_Unchecked events, I'd like to be able to access the item in MyList that the checkbox is bound to. Is there an easy way to do this? <ListView ItemsSource="{Binding Path=MyList, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" MinHeight="100" MaxHeight="100"> <ListView.View> <GridView> <GridViewColumn> <GridViewColumn.CellTemplate> <DataTemplate> <CheckBox Margin="-4,0,-4,0" IsChecked="{Binding MyBoolProperty}" Checked="CheckBox_Checked" Unchecked="CheckBox_Unchecked" /> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> </GridView> </ListView.View> </ListView>

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