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  • Best window manager for Linux for Virtual Desktop / Multimon

    - by mattcodes
    Previous used Ubuntu Gnome with Compiz but for my basic spec intel macbook (4 years old) its a little too heavyweight. So for now Im back on my macbook with os x, but now considering going back to Linux. Im looking for a window manager that has the following properties: 1) Supports virtual desktop (need 4 minimum) 2) Works well with multi monitors - can move an app with shortcut from one monitor to the other (on same virtual desktop) 3) Can remember window position (i.e. open vim on 2 monitor) - however must coerce everything back to first window when 2nd screen is unplugged 4) Keyboard shortcut friendly 5) Not too hard to install 6) Works well with minimum hardware such as integrated graphics Please suggest and share your experiences

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  • How would I measure the amount of RAM needed per Glassfish domain? [closed]

    - by oligofren
    Possible Duplicate: Can you help me with my capacity planning? In our test environment we have a lot of apps spread out over a few servers and Glassfish domains. To make versioning easier I would have liked to have one Glassfish domain per customer per app (kind of like a heavyweight version of lots of jetty instances). But I have heard that Glassfish is kind of heavy on the resources, and so I would need to measure approximately how many instances would fit in the available RAM. These are low-traffic/low load testing servers, so CPU is not really an issue, though RAM might be. How would I get an approximate measure of how much RAM is needed? This is one Glassfish 3 instance with one heavy EAR application deployed. top? jvmstats? ??

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  • Lightweight window manager for Linux for Virtual Desktop / Multimon

    - by mattcodes
    Previous used Ubuntu Gnome with Compiz but for my basic spec intel macbook (4 years old) its a little too heavyweight. So for now Im back on my macbook with os x, but now considering going back to Linux. Im looking for a window manager that has the following properties: Supports virtual desktop (need 4 minimum) Works well with multi monitors - can move an app with shortcut from one monitor to the other (on same virtual desktop) Can remember window position (i.e. open vim on 2 monitor) - however must coerce everything back to first screen when 2nd screen is unplugged Keyboard shortcut friendly Not too hard to install Works well with minimum hardware such as integrated graphics Please suggest and share your experiences

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  • Introducing Oracle VM VirtualBox

    - by Fat Bloke
    I guess these things always take longer than expected and, while the dust is still not completely settled in all the ex-Sun geographies, it is high time we started looking at some of the great new assets in the Oracle VM portfolio. So let's start with one of the most exciting: Oracle VM VirtualBox. VirtualBox is cross-platform virtualization software, oftentimes called a hypervisor, and it runs on Windows, Linux, Solaris and the Mac. Which means that you download it, you install it on your existing platform, and start creating and running virtual machines alongside your existing applications. For example, on my Mac I can run Oracle Enterprise Linux and Windows 7 alongside my Mac apps like this...(Click to zoom)VirtualBox use has grown phenomenally to the point that at Sun it was the 3rd most popular download behind Java and MySQL. Its success can be attributed to the fact that it doesn't need dedicated hardware, it can be installed on either client or server classes of computers, is very easy to use and is free for personal use. And, as you might expect, VirtualBox has it's own vibrant community too, over at www.virtualbox.org There are hundreds of tutorials out there about how to use VirtualBox to create vm's and install different operating systems ranging from Windows 7 to ChromeOS, and if you don't want to install an operating system yourself, you can download pre-built virtual appliances from community sites such as VirtualBox Images or commercial companies selling subscriptions to whole application stacks, such as JumpBox . In no time you'll be creating and sharing your own vm's using the VirtualBox OVF export and import function. VirtualBox is deceptively powerful. Under the simple GUI lies a formidable engine capable of running heavyweight multi-CPU virtual workloads, exhibiting Enterprise capabilities including a built-in remote display server, an iSCSI initiator for connecting to shared storage, and the ability to teleport running vm's from one host to another. And for solution builders, you should be aware that VirtualBox has a scriptable command line interface and an SDK and rich web service APIs. To get a further feel for what VirtualBox is capable of, check out some of these short movies or simply go download it for yourself.- FB

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  • ArchBeat Link-o-Rama for 2012-04-03

    - by Bob Rhubart
    Crawling a Content Folio | Kyle Hatlestad blogs.oracle.com Kyle Hatlestad shares detials on a component developed by Ed Bryant that simplifies the task of "consuming and publishing that folio on a Site Studio page or in your portal using RIDC." Northeast Ohio Oracle Users Group 2 Day Seminar - May 14-15 - Cleveland, OH www.neooug.org More than 20 sessions over 4 tracks, featuring 18 speakers, including Oracle ACE Director Cary Millsap, Oracle ACE Director Rich Niemiec, and Oracle ACE Stewart Brand. Register before April 15 and save. OTN Member discounts for April www.oracle.com Save up to 40% on titles from Oracle Press, Pearson, O'Reilly, Apress, and more. The Java EE 6 Example - Galleria - Part 1 | Markus Eisele blog.eisele.net Oracle ACE Director Markus Eisele heaps praise on Vineet Reynolds' Java EE 6 Galleria demo application, which demonstrates the use of JSF 2.0 and JPA 2.0 in a Java EE project using Domain Driven Design. Reminder: JavaOne Call For Papers Closing April 9th, 11:59pm | Arun Gupta blogs.oracle.com One week left to submit your JavaOne papers. Narrowing the gap between UI design and ADF development | Jack Ritzen www.nl.capgemini.com "Joining my first demo project I was confronted with two traditional contradictory worlds," says Jack Ritzen. "In the left corner; me, as a beginning GUI designer. And in the right, a heavyweight ADF developer. Let the game begin!" Thought for the Day "Operating systems are like underwear — nobody really wants to look at them." — Bill Joy

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  • How to access an encrypted INI file from C on an embedded system with little RAM

    - by Mawg
    I want to encrypt an INI file using a Delphi program on a Windows PC. Then I need to decrypt & access it in C on an embedded system with little RAM. I will do that once & fetch all info; I will not be consutinuously accessing the INI file whenever my program needs data from the file. Any advice as to which encryption to use? Nothing too heavyweight, just good enough for "Security through obscurity" and FOSS for both Delphi & C. And how can I decrypt, get all the info from the INI file - using as little RAM as possible, and then free any allocated RAM? I hope that someone can help. [Update] I am currently using an Atmel UC3, although I am not sure if that will be the final case. It has 512kB falsh & 128kB RAM. For an INI file, I am talking of max 8 sections, with a total of max 256 entries, each max 8 chars. I chose INI (but am not married to it), because i have had major problems in the past when the format of a data fiel changes, no matter whether binary, or text. For tex, I prefer the free format of INI (on PC), but suppose I could switch to line_1=data_1, line_2=data_2 and accept that if I add new fields in future software erleases they must come at the end, even if it is not pretty when read directly by humans. I suppose if I choose a fixed format text file then I never need get more than one line into RAM at a time ...

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  • Exclusive use of a Jini server during long-running call

    - by Matthew Flint
    I'm trying to use Jini, in a "Masters/Workers" arrangement, but the Worker jobs may be long running. In addition, each worker needs to have exclusive access to a singleton resource on that machine. As it stands, if a Worker receives another request while a previous request is running, then the new request is accepted and executed in a second thread. Are there any best-practices to ensure that a Worker accepts no further jobs until the current job is complete? Things I've considered: synchronize the job on the server, with a lock on the singleton resource. This would work, but is far from ideal. A call from a Master would block until the current Worker thread completes, even if other Workers become free in the meantime unregister the Worker from the registry while the job is running, then re-register when it completes. Might work OK, but something doesn't smell right with this idea... Of course, I'm quite happy to be told that there are more appropriate technologies than Jini... but I wouldn't want anything too heavyweight, like rolling out EJB containers all over the place.

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  • Requirements/issue tracker similar to online spreadsheet

    - by Maxim Eliseev
    Is there a requirements/issue tracker software which is similar to Google spreadsheet? We have Fogbugz but I find it more heavyweight and slow than a simple spreadsheet. Is there a Fogbugz alternative which is - fast - can show issues/requirements as a spreadsheet (at) and allows in-place editing - supports tree structures (where issue can have child issues)? It is required for a small project. There will be 2 developers and 1-2 other users. I guess that only one user will be actively maintaining it. UPDATE I do not say that a spreadsheet is better than Fogbugz or similar tools. In fact I am looking for a tool which is similar to Fogbugz and could replace a spreadsheet, but faster than Fogbugz and has an additional feature (table-like mode). I'd like to find a tool which can operate in a mode which looks like a table (one row per issue) but has a rich set features (similar to Fogbugs and JIRA). I find Fogbugz (and similar tools) inconvenient because I must enter the web form in order to edit anything. In-place editing (when issues are shown as a table) would be much faster.

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  • Raspberry Pi Now Shipping with 512MB RAM; Still Only $35

    - by Jason Fitzpatrick
    Fans of the tiny Raspberry Pi will be pleased to hear the new version of their Model B board now ships with 512MB of RAM (up from the previous 256MB). The best part about the upgrade? The price point stays at $35 a board. From the official Raspberry Pi blog: One of the most common suggestions we’ve heard since launch is that we should produce a more expensive “Model C” version of Raspberry Pi with extra RAM. This would be useful for people who want to use the Pi as a general-purpose computer, with multiple large applications running concurrently, and would enable some interesting embedded use cases (particularly using Java) which are slightly too heavyweight to fit comfortably in 256MB. The downside of this suggestion for us is that we’re very attached to $35 as our highest price point. With this in mind, we’re pleased to announce that from today all Model B Raspberry Pis will ship with 512MB of RAM as standard. If you have an outstanding order with either distributor, you will receive the upgraded device in place of the 256MB version you ordered. Units should start arriving in customers’ hands today, and we will be making a firmware upgrade available in the next couple of days to enable access to the additional memory. We’re excited to get our hands on a new board and try out Raspbmc with that extra RAM. HTG Explains: What is the Windows Page File and Should You Disable It? How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems

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  • UNESCO, J-ISIS, and the JavaFX 2.2 WebView

    - by Geertjan
    J-ISIS, which is the newly developed Java version of the UNESCO generalized information storage and retrieval system for bibliographic information, continues to be under heavy development and code refactoring in its open source repository. Read more about J-ISIS and its NetBeans Platform basis here. Soon a new version will be available for testing and it would be cool to see the application in action at that time. Currently, it looks as follows, though note that the menu bar is under development and many menus you see there will be replaced or removed soon: About one aspect of the application, the browser, which you can see above, Jean-Claude Dauphin, its project lead, wrote me the following: The DJ-Native Swing JWebBrowser has been a nice solution for getting a Java Web Browser for most popular platforms. But the Java integration has always produced from time to time some strange behavior (like losing the focus on the other components after clicking on the Browser window, overlapping of windows, etc.), most probably because of mixing heavyweight and lightweight components and also because of our incompetency in solving the issues. Thus, recently we changed for the JavaFX 2.2 WebWiew. The integration with Java is fine and we have got rid of all the DJ-Native Swing problems. However, we have lost some features which were given for free with the native browsers such as downloading resources in different formats and opening them in the right application. This is a pretty cool step forward, i.e., the JavaFX integration. It also confirms for me something I've heard other people saying too: the JavaFX WebView component is a perfect low threshold entry point for Swing developers feeling their way into the world of JavaFX.

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  • Track sales and commission with third-party tool

    - by Andrew
    I have a clothing website where I link to various clothing retailers. I have reached an agreement with one of the retailers whereby they will pay a commission to us for every sale they make from traffic that was referred by our site. I need a mechanism for tracking how much commission should be paid to us, that involves as little work as possible to implement from their side. We both have Google Analytics. Option 1: They record a goal in their GA account whenever someone makes a purchase on their site. They see how many completed goals are marked as referral traffic from our site and calculate commission accordingly. The problem with this is that the whole process of calculating and paying commission will be manual. They will need to frequently check how many sales were generated by referral traffic from our site, and probably we will have to chase them for commission payments. Also - since we won't have access to their GA data - we will need to trust that they report all sales accurately. Option 2: Sign them up to an affiliate network like Commission Junction or Google's Affiliate Network, and connect to them through this network. The problem with this solution is that it seems too heavyweight; ideally we don't want to ask a retailer to go through the whole sign up process just to deal with us and pay us commission. I am assuming that there must be some lightweight service that tracks the number of sales by one site and pays commission accordingly to the other site, where the sign up and installation procedure is simple and fast.

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  • web development with ruby without rails?

    - by kmorris511
    For reasons beyond my control, I'm being tasked with Ruby web development that does NOT use Rails or really any other heavyweight framework such as Merb. I'm wondering if anybody else has encountered this and can recommend best practices or resources that describe best practices for such a problem. I'd like to avoid the dreaded out.print('<td class="foo">'+some_data+'</td>') style of web development. A coworker has suggested Rack as a light framework but the documentation is sketchy and it seems unproven in the market.

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  • Plugin Framework - can there be too many addin assemblies?

    - by spooner
    Hi, The product I'm working on needs to be built in such a way that we have a quote engine driven by a pluggable framework. We are currently thinking of using MAF, so we can leverage separation of the host and addin interfaces for versioning. However, I'm concerned that we'd have lots of assemblies, it's likely that we'd have one for each quote engine addin - of which there could be 100 going forward, we also need to support multiple versions, so there could be lots of assemblies in total. The quote engine also uses WF to drive it, which means each AppDomain for each addin will need a workflow runtime associated with it. This seems quite heavyweight, however we can unload unfrequently used addins. Does this seem like a good design? We've also looked at a single AppDomain solution using an IOC container to load addin types, but I'm concerned that we won't be able to unload any of the assemblies, given their quantity.

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  • Lightweight messaging (async invocations) in Java

    - by Sergey Mikhanov
    I am looking for lightweight messaging framework in Java. My task is to process events in a SEDA’s manner: I know that some stages of the processing could be completed quickly, and others not, and would like to decouple these stages of processing. Let’s say I have components A and B and processing engine (be this container or whatever else) invokes component A, which in turn invokes component B. I do not care if execution time of component B will be 2s, but I do care if execution time of component A is below 50ms, for example. Therefore, it seems most reasonable for component A to submit a message to B, which B will process at the desired time. I am aware of different JMS implementations and Apache ActiveMQ: they are too heavyweight for this. I searched for some lightweight messaging (with really basic features like messages serialization and simplest routing) to no avail. Do you have anything to recommend in this issue?

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  • Setup Hibernate Session Factory in Tomcat

    - by Mark Estrada
    Hi All, I have been reading around the Hibernate core and I am still exploring some of its capability. It was mention in the docs that the SessionFactory is the heavyweight component of Hibernate thus it should be setup only once in a web application and in singleton. Each Session factory should pertain to one JDBC connection. Does anybody knows how to properly setup the session factory in tomcat web applications? Any links or tutorials would be better. Should I set it up as a contextlistener class also? Thanks.

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  • How to "flick" a UIImageView?

    - by Meltemi
    I've got some UIViews that I'd like the user to be able to "flick" across the screen. They're not scroll views. They simply contain a raster image (png). Can anyone point me to some sample code, etc to help get me started? Something a little more heavyweight than "MoveMe" out there that helps detect a "flick" (vs a "nudge" or a drag and drop) and then carries the view off in the direction of the "flick"? OpenGL probably overkill. If possible I'd like to stay w/in the realm of Core Graphics/Animation.

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  • Django: common template subsections

    - by Parand
    What's a good way to handle commonly occurring subsections of templates? For example, there is a sub-header section that's used across 4 different pages. The pages are different enough to not work well with template inheritance (ie. "extends" doesn't fit well). Is "include" the recommended method here? It feels a bit heavyweight, requiring each subsection or snippet to be in its own file. Are there any performance issues in using include or is it smart about forming template from the subsections (ie. if I make extensive use of it, do I pay any penalties)? I think what I'm looking for is something like template tags, but without the programming - a simple way to create a library of html template tags I can sprinkle in other templates.

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  • Windows Azure Recipe: Big Data

    - by Clint Edmonson
    As the name implies, what we’re talking about here is the explosion of electronic data that comes from huge volumes of transactions, devices, and sensors being captured by businesses today. This data often comes in unstructured formats and/or too fast for us to effectively process in real time. Collectively, we call these the 4 big data V’s: Volume, Velocity, Variety, and Variability. These qualities make this type of data best managed by NoSQL systems like Hadoop, rather than by conventional Relational Database Management System (RDBMS). We know that there are patterns hidden inside this data that might provide competitive insight into market trends.  The key is knowing when and how to leverage these “No SQL” tools combined with traditional business such as SQL-based relational databases and warehouses and other business intelligence tools. Drivers Petabyte scale data collection and storage Business intelligence and insight Solution The sketch below shows one of many big data solutions using Hadoop’s unique highly scalable storage and parallel processing capabilities combined with Microsoft Office’s Business Intelligence Components to access the data in the cluster. Ingredients Hadoop – this big data industry heavyweight provides both large scale data storage infrastructure and a highly parallelized map-reduce processing engine to crunch through the data efficiently. Here are the key pieces of the environment: Pig - a platform for analyzing large data sets that consists of a high-level language for expressing data analysis programs, coupled with infrastructure for evaluating these programs. Mahout - a machine learning library with algorithms for clustering, classification and batch based collaborative filtering that are implemented on top of Apache Hadoop using the map/reduce paradigm. Hive - data warehouse software built on top of Apache Hadoop that facilitates querying and managing large datasets residing in distributed storage. Directly accessible to Microsoft Office and other consumers via add-ins and the Hive ODBC data driver. Pegasus - a Peta-scale graph mining system that runs in parallel, distributed manner on top of Hadoop and that provides algorithms for important graph mining tasks such as Degree, PageRank, Random Walk with Restart (RWR), Radius, and Connected Components. Sqoop - a tool designed for efficiently transferring bulk data between Apache Hadoop and structured data stores such as relational databases. Flume - a distributed, reliable, and available service for efficiently collecting, aggregating, and moving large log data amounts to HDFS. Database – directly accessible to Hadoop via the Sqoop based Microsoft SQL Server Connector for Apache Hadoop, data can be efficiently transferred to traditional relational data stores for replication, reporting, or other needs. Reporting – provides easily consumable reporting when combined with a database being fed from the Hadoop environment. Training These links point to online Windows Azure training labs where you can learn more about the individual ingredients described above. Hadoop Learning Resources (20+ tutorials and labs) Huge collection of resources for learning about all aspects of Apache Hadoop-based development on Windows Azure and the Hadoop and Windows Azure Ecosystems SQL Azure (7 labs) Microsoft SQL Azure delivers on the Microsoft Data Platform vision of extending the SQL Server capabilities to the cloud as web-based services, enabling you to store structured, semi-structured, and unstructured data. See my Windows Azure Resource Guide for more guidance on how to get started, including links web portals, training kits, samples, and blogs related to Windows Azure.

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  • Goal setting/tracking packages for software projects

    - by Avi
    I'm a developer working by myself. I'm looking for a computerized tool to manage my goals and activities. I own it Microsoft Project, but I don't like it. I've started many "projects" but could never keep on using it. Too complex and heavyweight for me. I use MS-Outlook tasks. They are not what I need. No planning capability. Tracking is not nice. I'm using the Pomodoro technique and I like it, but I'm looking for something more comprehensive and with better computerized support. Something that would allow me to define goals with dependencies and time estimation, keep daily prioritized lists etc. So, I'm looking for a solution. One I've found is GoalPro, but I uneasy because I could not find a cross-product "top ten" like review. Are you using any goal setting package such as GoalPro? Which? Does it help? Pros and Cons?

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  • How to avoid en.voyages-sncf.com redirecting to uk.voyages-sncf.com?

    - by Mark Smith
    OK, so en.voyages-sncf.com is French Railways' English language website with full functionality for train booking in France - it sells iDTGV, offers seating options etc. uk.voyages-sncf.com is their UK subsidiary, with reduced functionality, no seat options, no iDTGV etc. Previously, I have been able to select 'Other countries (EUR)' top right and go from the uk version to the en version, or just type in the direct url 'en.voyages-sncf.com and go there. Now, they seem to have implemented an automatic redirect so whenever I enter 'en.voyages-sncf.com' on my UK-based PC or indeed try to select 'Other countries (EUR)' it automatically bumps me to uk.voyages-sncf.com, which I don't want. I can't get onto en.voyages-sncf at all. So, short of using a heavyweight solution like using a non-UK proxy server or downloading the TOR browser, is there any simple solution? Like telling my browser to go to en.voyages-sncf, go directly to en.voyages-sncf and no other site, do not pass go, do not collect £200, do not go anywhere else, ignore all redirects and do what you're told by ME, not by those Machiavellian so-and-sos?

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  • Why am I getting programs stuck in log_wait_commit under Linux?

    - by staticsan
    There is something subtly wrong with my Linux install that I just can't locate. It is Ubuntu Lucid Lynx (10.04) 64-bit. Hardware is a Dell Optiplex 960: Intel Core 2 Quad CPU, 8Gb of RAM, 2x 300Gb HDDs. /home is ext2 on one disk and everything else is on the other (/ is also ext3). I have VirtualBox running a 64-bit Vista image for Outlook calendaring, but the heavyweight apps are IntelliJ, NetBeans, MySQL and Opera. Opera also loads my mail (IMAP) of which there is over 10,000 messages. The problem is that Opera stalls for a few seconds from time-to-time. Watching the process list shows it's in log_wait_commit which means (as far as I have figured out) the filesystem is holding things up. Sometimes I can make this happen by doing a subversion update, but usually it happens for no reason I can see. It usually happens to Opera, but I've seen NetBeans go under, too. It doesn't make the app crash - it's just completely unresponsive for a few seconds. Googling has not helped. The closest I got was to remove the sync attribute in the file system. This achieved nothing. On the advice of a Linux guru friend, I lowered /proc/sys/vm/dirty_writeback_centisecs to 300, but that didn't do anything, either. And it was all he could think of. What is going on and can I fix it? (And how?)

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  • Archiving SQLHelp tweets

    - by jamiet
    #SQLHelp is a Twitter hashtag that can be used by any Twitter user to get help from the SQL Server community. I think its fair to say that in its first year of being it has proved to be a very useful resource however Kendra Little (@kendra_little) made a very salient point yesterday when she tweeted: Is there a way to search the archives of #sqlhelp Trying to remember answer to a question I know I saw a couple months ago http://twitter.com/#!/Kendra_Little/status/15538234184441856 This highlights an inherent problem with Twitter’s search capability – it simply does not reach far enough back in time. I have made steps to remedy that situation by putting into place two initiatives to archive Tweets that contain the #sqlhelp hashtag. The Archivist http://archivist.visitmix.com/ is a free service that, quite simply, archives a history of tweets that contain a given search term by periodically polling Twitter’s search service with that search term and subsequently displaying a dashboard providing an aggregate view of those tweets for things like tweet volume over time, top users and top words (Archivist FAQ). I have set up an archive on The Archivist for “sqlhelp” which you can view at http://archivist.visitmix.com/jamiet/7. Here is a screenshot of the SQLHelp dashboard 36 minutes after I set it up: There is lots of good information in there, including the fact that Jonathan Kehayias (@SQLSarg) is the most active SQLHelp tweeter (I suspect as an answerer rather than a questioner ) and that SSIS has proven to be a rather (ahem) popular subject!! Datasift The Archivist has its uses though for our purposes it has a couple of downsides. For starters you cannot search through an archive (which is what Kendra was after) and nor can you export the contents of the archive for offline analysis. For those functions we need something a bit more heavyweight and for that I present to you Datasift. Datasift is a tool (currently an alpha release) that allows you to search for tweets and provide them through an object called a Datasift stream. That sounds very similar to normal Twitter search though it has one distinct advantage that other Twitter search tools do not – Datasift has access to Twitter’s Streaming API (aka the Twitter Firehose). In addition it has access to a lot of other rather nice features: It provides the Datasift API that allows you to consume the output of a Datasift stream in your tool of choice (bring on my favourite ultimate mashup tool J ) It has a query language (called Filtered Stream Definition Language – FSDL for short) A Datasift stream can consume (and filter) other Datasift streams Datasift can (and does) consume services other than Twitter If I refer to Datasift as “ETL for tweets” then you may get some sort of idea what it is all about. Just as I did with The Archivist I have set up a publicly available Datasift stream for “sqlhelp” at http://datasift.net/stream/1581/sqlhelp. Here is the FSDL query that provides the data: twitter.text contains "sqlhelp" Pretty simple eh? At the current time it provides little more than a rudimentary dashboard but as Datasift is currently an alpha release I think this may be worth keeping an eye on. The real value though is the ability to consume the output of a stream via Datasift’s RESTful API, observe: http://api.datasift.net/stream.xml?stream_identifier=c7015255f07e982afdeebdf1ae6e3c0d&username=jamiet&api_key=XXXXXXX (Note that an api_key is required during the alpha period so, given that I’m not supplying my api_key, this URI will not work for you) Just to prove that a Datasift stream can indeed consume data from another stream I have set up a second stream that further filters the first one for tweets containing “SSIS”. That one is at http://datasift.net/stream/1586/ssis-sqlhelp and here is the FSDL query: rule "414c9845685ff8d2548999cf3162e897" and (interaction.content contains "ssis") When Datasift moves beyond alpha I’ll re-assess how useful this is going to be and post a follow-up blog. @Jamiet

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  • Java in Flux: Utopia or Deuteranopia?

    - by Tori Wieldt
    What a difference a year makes, indeed. Steve Harris, Senior VP, App Server Dev, Oracle and Adam Messinger, VP, Fusion Middleware Group, Oracle presented an informative keynote at the TheServerSide Java Symposium today. With a title "Java in Flux: Utopia or Deuteranopia?" you know things are going to be interesting (see Aeon Flux if you don't get the title reference).What a YearThey started with a little background, explaining that the reactions to Oracle's acquisition of Sun (and therefore Java) one year ago varied greatly, from "Freak Out!" to "Don't Panic." From the Oracle perspective, being the steward of and key contributor to Java requires a lot of sausage making.  They admitted to Oracle's fair share of Homer Simpson-esque "D'oh" moments in the past year, which was complicated by Oracle's communication style.   "Oracle has a tradition has a saying a few things and sticking by then, in contrast to Sun who was much more open," Adam explained. "We laid out the Java roadmap and are executing on it, and we hope that speaks to our commitment."Java SEAdam talked about having a long term perspective on the Java language (20+ years), letting ideas mature in more experimental languages, then bringing them into Java. Current priorities include: JVM convergence (getting the best features of JRockit into Hotspot); support of parallel/multi-core programming, and of course, all the improvements in JDK7. The JDK7 Developer Preview is underway (please download now and report bugs!). The Oracle development team is also working on Lambda and modularity (Jigsaw) for SE 8. Less certain, but also under discussion are improvements for Java SE 9. Adam is thinking of it as a "back to basics" release. He mentioned reworking JNI, improving data integration and improved device support.Java EE To provide context about Java EE, Steve said Java EE was great at getting businesses on the internet. The success of Java EE resulted in an incredible expansion of the middleware marketplace for developers and vendors.  But with success, came more. Java EE kept piling on capabilities, but that created excess baggage.  Doing simple things was no longer so simple. That's where Java community is so valuable: "When Java EE was too complex and heavyweight, many people were happy to tell us what we were doing wrong and popularize solutions," Steve explained. Because of that feedback, the Java EE teams focused on making things simple again: POJOs and annotations, and leveraging changes in Java SE.  Steve said that "innovation doesn't happen in expert groups, it happens on the ground where developers are solving problems," and platform stewards need to pay attention and take advantage of changes that are taking place.Enter the Cloud "Developers are restless, they want cloud functionality from their own IT dept" Steve explained. With the cloud, the scope of problem has expanded to include the data center itself, with multiple tenants. To move forward, existing APIs in Java EE need to be updated to be tenant-aware, service-enabled, and EE needs to support various styles of deployment. The goal is to get all that done in Java EE 8.Adam questioned Steve about timing and schedule. "Yes, the schedule is aggressive, but it'll work" Steve said. Then Adam asked about modularization. If Java SE 8 comes out at the end of 2012, when can Java EE deliver modularization? Steve suggested that key stakeholders can come with up some pre-SE 8 agreement on how to expose the metadata about modules. He then alluded to Mark Reinhold and John Duimovich's keynote at EclipseCON next week. Stay tuned.Evil Master PlanIn conclusion, Adam finally admitted to Oracle's Evil Master Plan: 1) Invest in and improve Java SE and EE 2) Collaborate with the community 3) Broaden the marketplace for Java development. Bwaaaaaaaaahahaha! <rubs hands together>Key LinksJDK7 Developer Preview  http://jdk7.java.net/preview/Oracle Technology Network http://www.oracle.com/technetwork/java/index.htmlTheServerSide Java Symposium  http://javasymposium.techtarget.com/"Utopia or Deuteranopia?" http://en.wikipedia.org/wiki/Aeon_Flux

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  • Android threading and database locking

    - by Sena Gbeckor-Kove
    Hi, We are using AsyncTasks to access database tables and cursors. Unfortunately we are seeing occasional exceptions regarding the database being locked. E/SQLiteOpenHelper(15963): Couldn't open iviewnews.db for writing (will try read-only): E/SQLiteOpenHelper(15963): android.database.sqlite.SQLiteException: database is locked E/SQLiteOpenHelper(15963): at android.database.sqlite.SQLiteDatabase.native_setLocale(Native Method) E/SQLiteOpenHelper(15963): at android.database.sqlite.SQLiteDatabase.setLocale(SQLiteDatabase.java:1637) E/SQLiteOpenHelper(15963): at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1587) E/SQLiteOpenHelper(15963): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:638) E/SQLiteOpenHelper(15963): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:659) E/SQLiteOpenHelper(15963): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:652) E/SQLiteOpenHelper(15963): at android.app.ApplicationContext.openOrCreateDatabase(ApplicationContext.java:482) E/SQLiteOpenHelper(15963): at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:193) E/SQLiteOpenHelper(15963): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:98) E/SQLiteOpenHelper(15963): at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:158) E/SQLiteOpenHelper(15963): at com.iview.android.widget.IViewNewsTopStoryWidget.initData(IViewNewsTopStoryWidget.java:73) E/SQLiteOpenHelper(15963): at com.iview.android.widget.IViewNewsTopStoryWidget.updateNewsWidgets(IViewNewsTopStoryWidget.java:121) E/SQLiteOpenHelper(15963): at com.iview.android.async.GetNewsTask.doInBackground(GetNewsTask.java:338) E/SQLiteOpenHelper(15963): at com.iview.android.async.GetNewsTask.doInBackground(GetNewsTask.java:1) E/SQLiteOpenHelper(15963): at android.os.AsyncTask$2.call(AsyncTask.java:185) E/SQLiteOpenHelper(15963): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:256) E/SQLiteOpenHelper(15963): at java.util.concurrent.FutureTask.run(FutureTask.java:122) E/SQLiteOpenHelper(15963): at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:648) E/SQLiteOpenHelper(15963): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:673) E/SQLiteOpenHelper(15963): at java.lang.Thread.run(Thread.java:1060) Does anybody have a general example for code which writes to a database from a different thread than the one reading and how can we ensure thread safety. One suggestion I've had is to use a ContentProvider, as this would handle the access of the database from multiple threads. I am going to look at this, but is this the recommended method of handling such a problem? It seems rather heavyweight considering we're talking about in front or behind Thanks in advance.

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  • XMPP and Android interaction

    - by Ameya Phadke
    I am currently finding about how to build a XMPP client application on android 2.0.I came across this link which somewhat talks about the same problem.I am a newbie to android dev and thus found the solution given there to be difficult to digest. The system currently has Active MQ as a JMS provider.My job is to fed the messages coming from JMS to the XMPP server and then develope XMPP client on android 2.0 which will listen and show notification to the events pushed by the server. I have following concerns(which might sound foolish) 1.How do I push the events from JMS to the XMPP server which will in turn push them on android? 2.Which XMPP server implementation I should use?I have 3 options * Openfire: Very mature (was a commercial product), but sounds like it's heavyweight, written in Java * Prosody: Lightweight and easy to use, written in Lua. Doesn't have PubSub module yet * Tigase: Also lightweight, written in Java, supports PubSub How do I test and setup these servers.Do I need PubSub funcationality for my app? 3.For XMPP client I came across Smack API given here which is updated like 2 years back.Can anyone please tell me how do I make use of it for Android 2.0.If possible can anyone please mail me latest working Smack jar files. Thanks, Ameya

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