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• Java2Days 2012 Trip Report

  - by reza_rahman

  Java2Days 2012 was held in beautiful Sofia, Bulgaria on October 25-26. For those of you not familiar with it, this is the third installment of the premier Java conference for the Balkan region. It is an excellent effort by admirable husband and wife team Emo Abadjiev and Iva Abadjieva as well as the rest of the Java2Days team including Yoana Ivanova and Nadia Kostova. Thanks to their hard work, the conference continues to grow vigorously with almost a thousand enthusiastic, bright young people attending this year and no less than three tracks on Java, the Cloud and Mobile. The conference is a true gem in this region of the world and I am very proud to have been a part of it again, along with the other world class speakers the event rightfully attracts. It was my honor to present the first talk of the conference. It was a full-house session on Java EE 7 and 8 titled "JavaEE.Next(): Java EE 7, 8, and Beyond". The talk was primarily along the same lines as Arun Gupta's JavaOne 2012 technical keynote. I covered the changes in JMS 2, the Java API for WebSocket (JSR 356), the Java API for JSON Processing (JSON-P), JAX-RS 2, JCache, JPA 2.1, JTA 1.2, JSF 2.2, Java Batch, Bean Validation 1.1 and the rest of the APIs in Java EE 7. I also briefly talked about the possible contents of Java EE 8. My stretch goal was to gather some feedback on some open issues in the Java EE EG (more on that soon) but I ran out of time in the short format forty-five minute session. The talk was received well and I had some pretty good discussions afterwards. The slides for the talk are here: JavaEE.Next(): Java EE 7, 8, and Beyond from reza_rahman To my delight, the Java2Days folks were very interested in my domain-driven design/Java EE 6 talk (titled "Domain Driven Design with Java EE 6"). I've had this talk in my inventory for a long time now but it always gets overridden by less theoretical talks on APIs, tools, etc. The talk has three parts -- a brief overview of DDD theory, mapping DDD to Java EE and actual running DDD code in Java EE 6/GlassFish. For the demo, I converted the well-known DDD sample application (http://dddsample.sourceforge.net/) written mostly in Spring 2 and Hibernate 2 to Java EE 6. My eventual plan is to make the code available via a top level java.net project. Even despite the broad topic and time constraints, the talk went very well. It was a full house, the Q & A was excellent and one of the other speakers even told me they thought this was the best talk of the conference! The slides for the talk are here: Domain Driven Design with Java EE 6 from Reza Rahman The code examples are available here: https://blogs.oracle.com/reza/resource/dddsample.zip for now, as a simple zip file. Give me a shout if you would like to get it up and running. It was also a great honor to present the last session of the conference. It was a talk on the Java API for WebSocket/JSR 356 titled "Building HTML5/WebSocket Applications with JSR 356 and GlassFish". The talk is based on Danny Coward's JavaOne 2012 talk. The talk covers the basic of WebSocket, the JSR 356 API and a simple demo using Tyrus/GlassFish. The talk went very well and there were some very good questions afterwards. The slides for the talk are here: Building HTML5/WebSocket Applications with GlassFish and JSR 356 from Reza Rahman The code samples are available here: https://blogs.oracle.com/arungupta/resource/totd183-HelloWebSocket.zip. You'll need the latest promoted GlassFish 4 build to run the code. Give me a shout if you need help. Besides presenting my talks, I got to attend some great sessions on OSGi, HTML5, cloud, agile and Java 8. I got an invite to speak at the Macedonia JUG when possible. Victor Grazi of InfoQ wrote about my sessions and Java2Days here: http://www.infoq.com/news/2012/11/Java2DaysConference. Stoyan Rachev was very kind to blog about my sessions here: http://www.stoyanr.com/2012/11/java2days-2012-java-ee.html. I definitely enjoyed Java2Days 2012 and hope to be part of the conference next year!

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• Watch Customer Concepts TV and Find Out How Leading Organizations Are Creating Engaging Customer Journeys

  - by Jeri Kelley

  The customer journey has changed dramatically. Customers have far more knowledge and far more power. Managing the new customer experience isn’t just about increasing profitability. For many organizations it’s about survival.  To survive, organizations must deliver relevant, personalized experiences that engage customers at each step in their journey, but where do organizations start? ??To learn more, I’m looking forward to tomorrow's Customer Concepts Web TV show.   On October 23rd, experts from Oracle and various successful businesses such as Euroffice will discuss how the customer journey has fundamentally changed and will share best practices for adapting your organization so you can truly engage customers. These Customer Concepts Web TV programs are an excellent way of keeping up with the very latest thinking in the field of customer experience.  Register for tomorrow’s event now at: http://bit.ly/RqPSL3

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• MySQL Connector/Net 6.8.0 alpha has been released

  - by Roberto Garcia

  Dear MySQL users, MySQL Connector/Net 6.8.0, a new version of the all-managed .NET driver for MySQL has been released. This is an alpha release for 6.8.x and it's not recommended for production environments.It is appropriate for use with MySQL server versions 5.0-5.6 It is now available in source and binary form from http://dev.mysql.com/downloads/connector/net/#downloads and mirror sites (note that not all mirror sites may be up to date at this point-if you can't find this version on some mirror, please try again later or choose another download site.) The 6.8.0 version of MySQL Connector/Net has support for Entity Framework 6.0 including: - Async Query and Save- Code-Based Configuration- Dependency Resolution- DbSet.AddRange/RemoveRange- Code First Mapping to Insert/Update/Delete Stored Procedures - Configurable Migrations History Table- DbContext can now be created with a DbConnection that is already opened- Custom Code First Conventions The release is available to download at http://dev.mysql.com/downloads/connector/net/#downloads Documentation-------------------------------------You can view current Connector/Net documentation at http://dev.mysql.com/doc/refman/5.6/en/connector-net.html You can find our team blog at http://blogs.oracle.com/MySQLOnWindows You can also post questions on our forums at http://forums.mysql.com/ Enjoy and thanks for the support! Connector/NET Team

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• Going Direct to Consumer in Consumer Goods – Live Webcast April 12

  - by Michael Seback

  Going Direct to Consumer is top of mind with executives in the Consumer Goods (CG) industry today.   Join our live webcast on Thursday, April 12 to learn what CG companies worldwide are thinking as they deploy their direct-to-consumer strategies in an effort to better engage with today’s empowered consumer. Hear Jon Copestake, Chief Consumer Goods Analyst of the Economist Intelligence Unit and Oracle to discuss the findings and industry trends. Some key findings include: Pushing traditional media through new media channels is not enough to reach today’s more plugged in, product-savvy consumer CG companies are experimenting with new ways to establish and enhance direct, two-way relationships with their target consumers across multiple channels Survey respondents and other CG executives see their nascent e-commerce efforts as complimentary to, not competing with, existing retail channels. Register to attend on April 12, 8:00 a.m. PT / 11:00 p.m. ET  

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• Cumulative Feature Overviews For PeopleSoft 9.2 Now Available

  - by John Webb

  Cumulative Feature Overviews (aka CFO's), are a great tool to start your fit gap analysis for PeopleSoft 9.2.      Built into an Excel spreadsheet, it enables you to quickly understand major changes that have occurred across multiple releases for any give product.    For example, if you are on PeopleSoft Accounts Payable 8.9 and are looking for the changes that have occurred between 8.9 and 9.2, the CFO tool provides a list of these changes for all releases since PeopleSoft 8.9 with detailed descriptions.    Customers and partners can now download the 9.2 version of the CFO's in My Oracle Support at the link below. PeopleSoft Cumulative Feature Overview Tool Homepage [ID 1117033.1]

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• Using new location-aware data types in SQL Server 2008

  Learn how leverage location based data using Microsoft SQL Server 2008 from C# applications and combine them with interactive maps.

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• Persisting NLP parsed data

  - by tjb1982

  I've recently started experimenting with NLP using Stanford's CoreNLP, and I'm wondering what are some of the standard ways to store NLP parsed data for something like a text mining application? One way I thought might be interesting is to store the children as an adjacency list and make good use of recursive queries (postgres supports this and I've found it works really well). Something like this: Component ( id, POS, parent_id ) Word ( id, raw, lemma, POS, NER ) CW_Map ( component_id, word_id, position int ) But I assume there are probably many standard ways to do this depending on what kind of analysis is being done that have been adopted by people working in the field over the years. So what are the standard persistence strategies for NLP parsed data and how are they used?

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• Difference between EJB Persist & Merge operation

  - by shantala.sankeshwar

  This article gives the difference between EJB Persist & Merge operations with scenarios.Use Case Description Users working on EJB persist & merge operations often have this question in mind " When merge can create new entity as well as modify existing entity,then why do we have 2 separate operations - persist & merge?" The reason is very simple.If we use merge operation to create new entity & if the entity exists then it does not throw any exception,but persist throws exception if the entity already exists.Merge should be used to modify the existing entity.The sql statement that gets executed on persist operation is insert statement.But in case of merge first select statement gets executed & then update sql statement gets executed.Scenario 1: Persist operation to create new Emp recordLet us suppose that we have a Java EE Web Application created with Entities from Emp table & have created session bean with data control. Drop Emp Object(Expand SessionEJBLocal->Constructors under Data Controls) as ADF Parameter form in jspx pageDrop persistEmp(Emp) as ADF CommandButton & provide #{bindings.EmpIterator.currentRow.dataProvider} as the value for emp parameter.Then run this page & provide values for Emp,click on 'persistEmp' button.New Emp record gets created.So when we execute persist operation only insert sql statement gets executed :INSERT INTO EMP (EMPNO, COMM, HIREDATE, ENAME, JOB, DEPTNO, SAL, MGR) VALUES (?, ?, ?, ?, ?, ?, ?, ?)    bind => [2, null, null, e2, null, 10, null, null]Scenario 2: Merge operation to modify existing Emp recordLet us suppose that we have a Java EE Web Application created with Entities from Emp table & have created session bean with data control.Drop empFindAll() Object as ADF form on jspx page.Drop mergeEmp(Emp) operation as commandButton & provide #{bindings.EmpIterator.currentRow.dataProvider} as the value for emp parameter.Then run this page & modify values for Emp record,click on 'mergeEmp' button.The respective Emp record gets modified.So when we execute merge operation select & update sql statements gets executed :SELECT EMPNO, COMM, HIREDATE, ENAME, JOB, DEPTNO, SAL, MGR FROM EMP WHERE (EMPNO = ?) bind => [7566]UPDATE EMP SET ENAME = ? WHERE (EMPNO = ?) bind => [KINGS, 7839]

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• Grant a user permissions on www-data owned /var/www

  - by George Pearce

  I have a simple web server setup for some websites, with a layout something like: site1: /var/www/site1/public_html/ site2: /var/www/site2/public_html/ I have previously used the root user to manage files, and then given them back to www-data when I was done (WordPress sites, needed for WP Uploads to work). This probably isn't the best way. I'm trying to find a way to create another user (lets call it user1) that has permission to edit files in site1, but not site2, and doesn't stop the files being 'owned' by www-data. Is there any way for me to do this?

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• Compress and Decompress data using GZipStream

  This article guides you how to compress the data using GZipStream in C#.

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• SQL SERVER – What is SSAS Tabular Data model and Why to use it – Part 2

  - by Pinal Dave

  In my last article, I talked about the basics of tabular data model and why use it. Then I demonstrated step by step creation of a basic tabular model project. In this part I’m going to throw some light on how to create measures and analyses in excel. If you look at the tabular project closely, you will notice that we have not defined any measure yet. So, in the first step we will define the measure first.  Open the solution and select the column you want to define as a measure. Then, click on the summation icon on the toolbar. You will see the aggregated results at the bottom of that column. You have also other choices as well like average, min, max, count and distinct count. After creating the required measures, we need to analyze our data in excel. To do this, click on the excel icon in the upper left corner of the toolbar. This will open your analysis in excel. Notice the pivot table field list here. I have highlighted the measures that we created in the earlier step. Now, we can use these measures in our analysis Now, we have to put the required fields in their respective places as column labels, row labels, Values and Report filter for analysis. See below snapshot for details, it shows region wise sales on a yearly basis You can even apply filters on the above analysis by placing the slicer field in report filter. In our example, we will take an English product name as a filter. You can use the filter as depicted in the below snapshot. Optionally, you can also use the slider to filter data more interactively. Further to improve our analysis, we can insert pivot charts That’s all for this time, in my next post I’m going to show in detail about how to create hierarchies, perspectives, KPI’s  and many more features. Author: Namita Sharma, Senior Corporate Trainer at Koenig Solutions. Reference: Pinal Dave (http://blog.SQLAuthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: SSAS

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• Methods to Validate User Supplied Data

  - by clifgray

  I am working on a website where users record data from certain locations and they input an address to tag that location with a GPS coordinate. Pretty frequently those locations are tagged more than a mile away from the actual location and I am trying to implement a few ways to validate the data. Right now I am thinkiing of: having a tag of location pages for other users to say "incorrect location" so I can go one by one and fix it letting users with a decent amount of experience (reputation) edit the location GPS coordinates making the location be validated by a mod before it goes live and they make sure it is a good location Are these reasonable? I know the first will take a lot of my time and I would love some suggestions.

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• How to commit a file conversion?

  - by l0b0

  Say you've committed a file of type foo in your favorite vcs: $ vcs add data.foo $ vcs commit -m "My data" After publishing you realize there's a better data format bar. To convert you can use one of these solutions: $ vcs mv data.foo data.bar $ vcs commit -m "Preparing to use format bar" $ foo2bar --output data.bar data.bar $ vcs commit -m "Actual foo to bar conversion" or $ foo2bar --output data.foo data.foo $ vcs commit -m "Converted data to format bar" $ vcs mv data.foo data.bar $ vcs commit -m "Renamed to fit data type" or $ foo2bar --output data.bar data.foo $ vcs rm data.foo $ vcs add data.bar $ vcs commit -m "Converted data to format bar" In the first two cases the conversion is not an atomic operation and the file extension is "lying" in the first commit. In the last case the conversion will not be detected as a move operation, so as far as I can tell it'll be difficult to trace the file history across the commit. Although I'd instinctively prefer the last solution, I can't help thinking that tracing history should be given very high priority in version control. What is the best thing to do here?

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• Working with Spatial Data Part IV - Developing a Geospatial Dashboard (GIS)

  In Part IV of the Geo-Spatial series, an interactive dashboard is developed to present and interact with the data.

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• What datastructure would you use for a collision-detection in a tilemap?

  - by Solom

  Currently I save those blocks in my map that could be colliding with the player in a HashMap (Vector2, Block). So the Vector2 represents the coordinates of the blog. Whenever the player moves I then iterate over all these Blocks (that are in a specific range around the player) and check if a collision happened. This was my first rough idea on how to implement the collision-detection. Currently if the player moves I put more and more blocks in the HashMap until a specific "upper bound", then I clear it and start over. I was fully aware that it was not the brightest solution for the problem, but as said, it was a rough first implementation (I'm still learning a lot about game-design and the data-structure). What data-structure would you use to save the Blocks? I thought about a Queue or even a Stack, but I'm not sure, hence I ask.

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• Cannot Create a connection to Data Source VB 2010 [closed]

  - by CLO_471

  I seem to be having some issues with my Visual Basic 2010. I am trying to create a connection to a data source and it is just not working. Even my old connections in my other projects are not working. When I get into VB I try and create a connection by clicking Add New Data Source Database DataSet New Connection and when I click on New Connection the screen disappears and I am not able to select anything. Does anyone know of a glitch or something? I have checked my ODBC connections and all is good and I have been able to play around with my Access connections (which I am trying to connect) and Queries and everything seems to be working fine. I have rebooted several times, uninstalled and resinstalled VB and have also repaired the entire application. I am not sure what else to try or what else to do. Any help would be much appreciated. My computer specs are XP SP3, Core2 Duo at 2.80 and 3GB RAM

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• Zmanda's Data Backup: Enterprise Quality, SMB Prices

  With an upgrade to its flagship Amanda Enterprise Edition data backup and disaster recovery software, Zmanda brings enterprise-grade capabilities to SMB.

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• Infrastructure and Platform As A Service in Private Cloud at Lawrence Livermore National Laboratory

  - by Anand Akela

  Scientists at the National Ignition Facility (NIF)— the world’s largest laser, at the Lawrence Livermore National Laboratory (LLNL)— need research environment that requires re-creating the physical environment and conditions that exist inside the sun. They have built private cloud infrastructure using Oracle VM and Oracle Enterprise Manager 12c to provision such an environment for research.  Tim Frazier of LLNL joined the "Managing Your Private Cloud With Oracle Enterprise Manager' session at Oracle Open World 2012 and discussed how the latest features in Oracle VM and Oracle Enterprise Manager 12c enables them to accelerate application provisioning in their private cloud. He also talked about how to increase service delivery agility, improve standardized roll outs, and do proactive management to gain total control of the private cloud environment. He also presented at the "Scene and Be Heard Theater" at Oracle OpenWorld 2012 and shared a lot of good information about his project and what they are doing in their private cloud environment. Learn more by looking at Tim's presentation .

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• Sales & Technical Tutorials: Updated for OBI, BI-Apps and Hyperion EPM

  - by Mike.Hallett(at)Oracle-BI&EPM

    To get the latest updated OBI, BI-Apps and Hyperion EPM Sales & Technical Tutorials, goto the Oracle Business Intelligence and Enterprise Performance Management library for Partners, a compilation of pre-recorded Oracle BI & EPM online tutorials and webinars that have been delivered recently from Oracle: that you can replay at any time. Sales & Technical Tutorials for OBI, BI-Apps and Hyperion EPM.

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• Staying Ahead of the Curve - Deloitte's 2012 Human Capital Trends Webcast | June 13th

  - by Jay Richey, HCM Product Marketing

  Businesses today are calling on HR to leap ahead and help to manage change in the face of complex challenges that touch so many parts of the enterprise. This webinar will provide an overview of eight major Human Capital Trends surfacing in 2012. Understanding the trends — what they mean for both leading HR and for leading the business — is an opportunity for organizations to be proactive and stay ahead of the curve. June 13, 2012 12:00 p.m. – 2:00 p.m. CT Online Featured Speakers: Michael Gretczko Principal, Deloitte Consulting LLP, Human Capital Practice Dan Helfrich Principal, Deloitte Consulting LLP, Federal Human Capital Practice Leader Greg Vert Senior Consultant, Deloitte Consulting Evite & Registration:  http://www.oracle.com/us/dm/75810-wwmk11040178mpp035c007-oem-1633667.html

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• obiee 10g teradata Solaris deployment

  - by user554629

  I have 3-4 years worth of notes on proper Teradata deployment across multiple operating systems.   The topic that is too large to cover succinctly in a blog entry.   I'm trying something new:  document a specific situation, consolidate the facts, document diagnostic procedures and then clone the structure to cover other obiee deployments (11g and other operating systems). Until the icon below is removed, this blog entry may be revised frequently.  No construction between June 6th through June 25th. Getting started obiee 10g certification:  pg 24-25 Teradata V2R5.1.x - V2R6.2, Client 13.10, certified 10.1.3.4.1obiee 10g documentation: Deployment Guide, Server Administration, Install/Config Guideobiee overview: teradata connectivity downloads: ( requires registration )solaris odbc drivers: sparc 13.10:  Choose 13.10.00.04  ( ReadMe ) sparc 14.00: probably would work, but not certified by Oracle on 10g I assume you have obiee 10.1.3.4.1 installed; 10.1.3.4.2 would be a better choice. Teradata odbc install requires root for Solaris pkgadd Only 1 version of Teradata odbc can be installed.symbolic links to the current version are created in /usr/lib at install obiee implementation background database access has two types of implementation:  native and odbcnative drivers use DB vendor client interfaces for accessodbc drivers are provided by the DB vendor for DB accessTeradata is an odbc interface Database. odbc drivers require an ODBC Driver Managerobiee uses Merant Data Direct driver manager obiee servers communicate with one another using odbc.The internal odbc driver is implemented by the obiee team and requires Merant Driver Manager. Teradata supplies a Driver Manager, which is built by Merant, but should not be used in obiee. The nqsserver shared library deployment looks like this  OBIEE Server<->DataDirect Manager<->Teradata Driver<->Teradata Database nqsserver startup $ cd $BI/setup$ . ./sa-init64.sh$ run-sa.sh autorestart64 The following files are referenced from setup:  .variant.sh  user.sh  NQSConfig.INI  DBFeatures.INI  $ODBCINI ( odbc.ini )  sqlnet.ora How does nqsserver connect to Teradata? A teradata DSN is created in the RPD. ( TD71 )setup/odbc.ini contains: [ODBC Data Sources] TD71=tdata.so[TD71]Driver=/opt/tdodbc/odbc/drivers/tdata.soDescription=Teradata V7.1.0DBCName=###.##.##.### LastUser=Username=northwindPassword=northwindDatabase=DefaultDatabase=northwind setup/user.sh contains LIBPATH\=/opt/tdicu/lib_64\:/usr/odbc/lib\:/usr/odbc/drivers\:/usr/lpp/tdodbc/odbc/drivers\:$LIBPATHexport LIBPATH   setup/.variant.sh contains if [ "$ANA_SERVER_64" = "1" ]; then  ANA_BIN_DIR=${SAROOTDIR}/server/Bin64  ANA_WEB_DIR=${SAROOTDIR}/web/bin64  ANA_ODBC_DIR=${SAROOTDIR}/odbc/lib64         setup/sa-run.sh  contains . ${ANA_INSTALL_DIR}/setup/.variant.sh. ${ANA_INSTALL_DIR}/setup/user.sh logfile="${SAROOTDIR}/server/Log/nqsserver.out.log"${ANA_BIN_DIR}/nqsserver -quiet >> ${logfile} 2>&1 &   nqsserver is running: nqsserver produces $BI/server/nqsserver.logAt startup, the native database drivers connect and record DB versions.tdata.so is not loaded until a Teradata DB connection is attempted.    Teradata odbc client installation Accept all the defaults for pkgadd.   Install in /opt. $ mkdir odbc$ cd odbc$ gzip -dc ../tdodbc__solaris_sparc.13.10.00.04.tar.gz | tar -xf - $ sudo su# pkgadd -d . TeraGSS# pkgadd -d . tdicu1310# pkgadd -d . tdodbc1310   Directory Notes: /opt/teradata/client/13.10/odbc_64/lib/tdata.soThe 64-bit obiee library loaded by nqsserver. /opt/teradata/client/13.10/odbc_64/lib is not needed in LD_LIBRARY_PATH /opt/teradata/client/13.10/tdicu/lib64is needed in LD_LIBRARY_PATH /usr/odbc should not be referenced;  it is a link to 32-bit libraries LD_LIBRARY_PATH_64 should not be used.     Useful bash functions and aliases export SAROOTDIR=/export/home/dw_adm/OracleBIexport TERA_HOME=/opt/teradata/client/13.10 export ORACLE_HOME=/export/home/oracle/product/10.2.0/clientexport ODBCINI=$SAROOTDIR/setup/odbc.iniexport TD_ICU_DATA=$TERA_HOME/tdicu/lib64alias cds="alias | grep '^alias cd' | sed 's/^alias //' | sort"alias cdtd="cd $TERA_HOME; ls" alias cdtdodbc="cd $TERA_HOME/odbc_64; ls -l"alias cdtdicu="cd $TERA_HOME/tdicu/lib64; ls -l"alias cdbi="cd $SAROOTDIR; ls"alias cdbiodbc="cd $SAROOTDIR/odbc; ls -l"alias cdsetup="cd $SAROOTDIR/setup; ls -ltr"alias cdsvr="cd $SAROOTDIR/server; ls"alias cdrep="cd $SAROOTDIR/server/Repository; ls -ltr"alias cdsvrcfg="cd $SAROOTDIR/server/Config; ls -ltr"alias cdsvrlog="cd $SAROOTDIR/server/Log; ls -ltr"alias cdweb="cd $SAROOTDIR/web; ls"alias cdwebconfig="cd $SAROOTDIR/web/config; ls -ltr"alias cdoci="cd $ORACLE_HOME; ls"pkgfiles() { pkgchk -l $1 | awk  '/^Pathname/ {print $2}'; }pkgfind()  { pkginfo | egrep -i $1 ; } Examples: $ pkgfind td$ pkgfiles tdodbc1310 | grep 64$ cds$ cdtdodbc$ cdsetup$ cdsvrlog$ cdweblog

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• Texturing a mesh generated from voxel data

  - by Minja

  I have implemented the Marching Cubes algorithm to display an isosurface based on voxel data. Currently, it is displayed with triplanar texturing. I'm working with unity, so I have a material with the triplanar shader attached. Now, the whole isosurface is rendered using this material. And thats my problem: I want the texture to represent the voxel data. I'm storing a material value for every point in the grid, and based on this value, I want the texture of the isosurface to change. Sadly, I have no clue how to do this. So if the voxel is sand, I want sand to be displayed; if it's stone, then there should be stone. Right now, everything is displayed as sand. Thanks in advance!

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• Send raw data to USB parallel port after upgrading to 11.10

  - by zaphod

  I have a laser cutter connected via a generic USB to parallel adapter. The laser cutter speaks HPGL, as it happens, but since this is a laser cutter and not a plotter, I usually want to generate the HPGL myself, since I care about the ordering, speed, and direction of cuts and so on. In previous versions of Ubuntu, I was able to print to the cutter by copying an HPGL file directly to the corresponding USB "lp" device. For example: cp foo.plt /dev/usblp1 Well, I just upgraded to Ubuntu 11.10 oneiric, and I can't find any "lp" devices in /dev anymore. D'oh! What's the preferred way to send raw data to a parallel port in Ubuntu? I've tried System Settings Printing + Add, hoping that I might be able to associate my device with some kind of "raw printer" driver and print to it with a command like lp -d LaserCutter foo.plt But my USB to parallel adapter doesn't seem to show up in the list. What I do see are my HP Color LaserJet, two USB-to-serial adapters, "Enter URI", and "Network Printer". Meanwhile, over in /dev, I do see /dev/ttyUSB0 and /dev/ttyUSB1 devices for the 2 USB-to-serial adapters. I don't see anything obvious corresponding to the HP printer (which was /dev/usblp0 prior to the upgrade), except for generic USB stuff. For example, sudo find /dev | grep lp produces no output. I do seem to be able to print to the HP printer just fine, though. The printer setup GUI gives it a device URI starting with "hp:" which isn't much help for the parallel adapter. The CUPS administrator's guide makes it sound like I might need to feed it a device URI of the form parallel:/dev/SOMETHING, but of course if I had a /dev/SOMETHING I'd probably just go on writing to it directly. Here's what dmesg says after I disconnect and reconnect the device from the USB port: [ 924.722906] usb 1-1.1.4: USB disconnect, device number 7 [ 959.993002] usb 1-1.1.4: new full speed USB device number 8 using ehci_hcd And here's how it shows up in lsusb -v: Bus 001 Device 008: ID 1a86:7584 QinHeng Electronics CH340S Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x1a86 QinHeng Electronics idProduct 0x7584 CH340S bcdDevice 2.52 iManufacturer 0 iProduct 2 USB2.0-Print iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 96mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 7 Printer bInterfaceSubClass 1 Printer bInterfaceProtocol 2 Bidirectional iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 0 Device Status: 0x0000 (Bus Powered)

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• Loading Wavefront Data into VAO and Render It

  - by Jordan LaPrise

  I have successfully loaded a triangulated wavefront(.obj) into 6 vectors, the first 3 vectors contain the locations for vertices, uv coords, and normals. The last three have the indices stored for each of the faces. I have been looking into using VAO's and VBO's to render, and I'm not quite sure how to load and render the data. One of my biggest concerns is the fact that indexed rendering only allows you to have one array of indices, meaning I somehow have to make all of the first three vectors the same size, the only way I thought of doing this, is to make 3 new vertex's of equal size, and load in the data for each face, but that would completely defeat the purpose of indexing. Any help would be appreciated. Thanks in advance, Jordan

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• How should modules access data outside their scope?

  - by Joe

  I run into this same problem quite often. First, I create a namespace and then add modules to this namespace. Then issue I always run into is how best to initialize the application? Naturally, each module has its own startup procedure so should this data(not code in some cases, just a list of items to run) stay with the module? Or should there be a startup procedure in the global namespace which has the startup data for ALL the modules. Which is the more robust way of organizing this situation? Should some things be made centralized or should there be strict adherence to modules encapsulating everything about themselves? Though this is a general architecture questions, Javascript centric answers would be really appreciated!

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