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• CouchDB basics for PHP developers

  <b>IBM Developerworks:</b> "If you're a typical PHP developer, it doesn't take a thorough review of past projects to pick out a telling pattern: In most (if not all) cases, you're probably getting PHP to talk to a database back end for all that dynamic data goodness; in 99 percent of those instances, you're using MySQL."

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• Search Engine Optimization (SEO) Just Got Easy

  Start with the free download, review your website, and make changes fast. The SEO Toolkit with its detailed analysis and search engine friendly suggestions helps improve the relevance of your website in search results right away. The SEO Toolkit will help you increase website traffic and revenue, influence and update search engines, and improve customer experience. For more information or to download, please visit the Free SEO Toolkit page.

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• The best way to snatch an expiring domain?

  - by SilvrSun

  There's a domain that I've been looking to acquire that is expiring on the 30th of this month. I don't think it is very popular, and the guy hasn't seemed to update the website in two years now. So, I was doing some research and came across this site that seems to review some "snatching" services, but the article is quite outdated. So, I'm wondering if anyone can offer any newer information on the topic, or whether the recommend any services for helping me acquire the site in question?

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• Linux Arpeggiators, Part 1

  <b>Linux Journal:</b> "In my last article I looked at performance loopers for Linux. This week I begin a 2-part review of similar applications called arpeggiators."

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• AMD FirePro V4800 &amp; FirePro V7800

  <b>Phoronix:</b> "For those looking into an entry-to-mid-range or high-end workstation graphics card, today we are completing our look at AMD's Evergreen-based FirePro family with a review of the ATI FirePro V4800 and ATI FirePro V7800."

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• Transgaming customers can now save 25% off CrossOver Games

  <b>Wine-Review:</b> "So if your a current or ex Transgaming Cedega customer and you would like to take the leap and switch over to CrossOver Games now is the perfect time to do so. With this special dealcode "ComeToTheLight" you will receive a instant 25% discount off the normal retail price of CrossOver Games or CrossOver Professional."

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• SQL Server 2008 R2 Quiet Installation Failure

  - by pk

  I've downloaded the SQL Server 2008 R2 software from Microsoft and am working on scripting a silent installation. I'm getting the following errors (and the duplicate paste job is not an accident, that's how it shows up for me) The following error occurred: Exception has been thrown by the target of an invocation. Error result: 1152035024 Result facility code: 1194 Result error code: 43216 Please review the summary.txt log for further details The following error occurred: Exception has been thrown by the target of an invocation. Error result: 1152035024 Result facility code: 1194 Result error code: 43216 Please review the summary.txt log for further details Microsoft (R) SQL Server 2008 R2 Setup 10.50.1600.01 This is what shows up in the detailed SQL install log. 2011-02-23 09:53:13 Slp: Running Action: ExecuteInitWorkflow 2011-02-23 09:53:13 Slp: Workflow to execute: 'INITIALIZATION' 2011-02-23 09:53:13 Slp: Error: Action "Microsoft.SqlServer.Configuration.BootstrapExtension.ExecuteWorkflowAction" threw an exception during execution. 2011-02-23 09:53:13 Slp: Microsoft.SqlServer.Setup.Chainer.Workflow.ActionExecutionException: Exception has been thrown by the target of an invocation. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentNullException: Value cannot be null. 2011-02-23 09:53:13 Slp: Parameter name: InstallMediaPath Hopefully someone can help me work through this. Here is a simple version of my PowerShell code. $arguments = @() $arguments += "/q" $arguments += "/ACTION=Install" $arguments += "/FEATURES=SQL,Tools" $arguments += "/INSTANCENAME=MSSQLSERVER" $arguments += "/SQLSVCACCOUNT=`"$NetBIOSDomainName\$SQLServerServiceAccount`"" $arguments += "/SQLSVCPASSWORD=`"$SQLServerServiceAccountPassword`"" $arguments += "/SQLSYSADMINACCOUNTS=`"$NetBIOSDomainName\$SQLSysAdminAccount`"" $arguments += "/AGTSVCACCOUNT=`"$NetBIOSDomainName\$SQLServerAgentAccount`"" $arguments += "/IACCEPTSQLSERVERLICENSETERMS" Start-Process "$SQLServerSetupLocation\setup.exe" -Wait -ArgumentList $arguments -RedirectStandardOutput error.txt

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• Merge changes in Microsoft Word documents

  - by Álvaro G. Vicario

  I'm using Microsoft Word 2002 to maintain some documentation. The documents are stored in a version control repository (Subversion) together with the source code it documents. My Subversion client (TortoiseSVN) comes with a little VBA script that allows to leverage the built-in revisions feature when merging different branches. In other words, when I want to copy changes from one document to another, Word compares both documents (source and target) and builds a third document that has the contents of the source doc tagged as revisions, so I can then review differences one by one and confirm or discard changes. While this is handy, it also means that making a single change to the source document forces me to review all the differences between both documents and discard all of them except the only actual change. My questions is... Do you know about an application or plug-in that's able to find the differences between two Word documents and apply those differences to a third document? (I know 2002 is very old but that's what my company gives me; I'm open to solutions that use newer versions though.)

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• Disk Activity Alert Windows SBS 2003 on Dell PowerEdge 830 with Raid

  - by Ron Whites

  Background: I have a Dell PowerEdge 830 Server running Windows SB Server 2003. It has 4gbs of RAM and a ATA CERC SATA 6CH controller with 3 160gb drives in a Raid 5 configuration. The Problem I am seeing Admin ---"Disk Activity Alert on Server" emails These often occur when disk backups, de-frag or high disk usage is going on. Generally the server isn't over stressed. The Disk Alert emails say in part ... The following disk has low idle time, which may cause slow response time when reading or writing files to the disk. Disk: 0 C: F: D: Review the Disk Transfers/sec and % Idle Time counters for the PhysicalDisk performance object. If the Disk Transfers/sec counter is consistently below 150 while the % Idle Time counter remains very low (close to 0), there may be a problem with the disk driver or hardware. The Questions I have: With what utility can I review the Disk Transfers/sec and Idle Time? It appears there is no utility for that on the server! I think I may need to download a very large (two DVD) Dell "OpenManage" utility to be able to monitor the raid system and see what is a problem is that true?

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• How do you share your craft with non programmers?

  - by EpsilonVector

  Sometimes I feel like a musician who can't play live shows. Programming is a pretty cool skill, and a very broad world, but a lot of it happens "off camera"- in your head, in your office, away from spectators. You can of course talk about programming with other programmers, and there is peer programming, and you do get to create something that you can show to people, but when it comes to explaining to non programmers what is it that you do, or how was your day at work, it's sort of tricky. How do you get the non programmers in your life to understand what is it that you do? NOTE: this is not a repeat of Getting non-programmers to understand the development process, because that question was about managing client expectations.

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• How do you share your craft with non programmers?

  - by EpsilonVector

  Sometimes I feel like a musician who can't play live shows. Programming is a pretty cool skill, and a very broad world, but a lot of it happens "off camera"- in your head, in your office, away from spectators. You can of course talk about programming with other programmers, and there is peer programming, and you do get to create something that you can show to people, but when it comes to explaining to non programmers what is it that you do, or how was your day at work, it's sort of tricky. How do you get the non programmers in your life to understand what is it that you do? NOTE: this is not a repeat of Getting non-programmers to understand the development process, because that question was about managing client expectations.

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• The Inside View on InsideView

  - by steve.diamond

  Call me a mooch. One of my favorite things about the Sales 2.0 conference held in San Francisco a couple of weeks ago was the venue (Four Seasons Hotel) and the food. But higher on the list was the quality of companies and people who attended. Our peer and 2.0 impresario Ken Pulverman used his trusty new Kodak Zi8 to capture a medley of elevator pitches from vendors who exhibited at the conference. We had many "FOOCROD" in attendance (Friends of Oracle CRM On Demand). And we love our friends. But we particularly liked this pitch from Tom Gwynn of InsideView, showcasing the value proposition of SalesView combined with Oracle CRM On Demand.

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• Ryan Weber On KCNext | #AJIReport

  - by Jeff Julian

  We sit down with Ryan Weber of KCNext in our office to talk about the Kansas City market for technology. The Technology Council of Greater Kansas City is committed to growing the existing base of technology firms, recruiting and attracting technology companies, aggregating and promoting our regional IT assets and providing peer interaction and industry news. During this show we talk about why KCNext is great for Kansas City. They offer some great networking and educational events, but also focus on connecting companies together to help build relationships on a business level. Make sure you visit their website to see what events are coming up and link up with them on Twitter to stay on top of news from the KC technology community. Listen to the Show Site: http://www.kcnext.com/ Twitter: @KCNext LinkedIn: KCNext - The Technology Council of Greater Kansas City

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• Java EE at JavaOne - A Few Picks from a Very Rich Line-up

  - by Janice J. Heiss

  A rich and diverse set of sessions cast a spotlight on Java EE at this year’s JavaOne, ranging from the popular Web Framework Smackdown, to Java EE 6 and Spring, to sessions exploring Java EE 7, and one on the implications of HTML5. Some of the world’s best EE architects and developers will be sharing their insight and expertise. If only I could be at ten places at once!BOF4149 - Web Framework Smackdown 2012    Markus Eisele - Principal IT Architect, msg systems ag    Graeme Rocher - Senior Staff Engineer, VMware    James Ward - Developer Evangelist, Heroku    Ed Burns - Consulting Member of Technical Staff, Oracle    Santiago Pericasgeertsen - Software Engineer, Oracle* Monday, Oct 1, 8:30 PM - 9:15 PM - Parc 55 - Cyril Magnin II/III Much has changed since the first Web framework smackdown, at JavaOne 2005. Or has it? The 2012 edition of this popular panel discussion surveys the current landscape of Web UI frameworks for the Java platform. The 2005 edition featured JSF, Webwork, Struts, Tapestry, and Wicket. The 2012 edition features representatives of the current crop of frameworks, with a special emphasis on frameworks that leverage HTML5 and thin-server architecture. Java Champion Markus Eisele leads the lively discussion with panelists James Ward (Play), Graeme Rocher (Grails), Edward Burns (JSF) and Santiago Pericasgeertsen (Avatar).CON6430 - Java EE and Spring Framework Panel Discussion    Richard Hightower - Developer, InfoQ    Bert Ertman - Fellow, Luminis    Gordon Dickens - Technical Architect, IT101, Inc.    Chris Beams - Senior Technical Staff, VMware    Arun Gupta - Technology Evangelist, Oracle* Tuesday, Oct 2, 10:00 AM - 11:00 AM - Parc 55 - Cyril Magnin II/III In the age of Java EE 6 and Spring 3, enterprise Java developers have many architectural choices, including Java EE 6 and Spring, but which one is right for your project? Many of us have heard the debate and seen the flame wars—it’s a topic with passionate community members, and it’s a vibrant debate. If you are looking for some level-headed discussion, grounded in real experience, by developers who have tried both, then come join this discussion. InfoQ’s Java editors moderate the discussion, and they are joined by independent consultants and representatives from both Java EE and VMWare/SpringSource.BOF4213 - Meet the Java EE 7 Specification Leads   Linda Demichiel - Consulting Member of Technical Staff, Oracle   Bill Shannon - Architect, Oracle* Tuesday, Oct 2, 5:30 PM - 6:15 PM – Parc 55 - Cyril Magnin II/III This is your chance to meet face-to-face with the engineers who are developing the next version of the Java EE platform. In this session, the specification leads for the leading technologies that are part of the Java EE 7 platform discuss new and upcoming features and answer your questions. Come prepared with your questions, your feedback, and your suggestions for new features in Java EE 7 and beyond.CON10656 - JavaEE.Next(): Java EE 7, 8, and Beyond    Ian Robinson - IBM Distinguished Engineer, IBM    Mark Little - JBoss CTO, NA    Scott Ferguson - Developer, Caucho Technology    Cameron Purdy - VP Development, Oracle*Wednesday, Oct 3, 4:30 PM - 5:30 PM - Parc 55 - Cyril Magnin II/IIIIn this session, hear from a distinguished panel of industry and open source luminaries regarding where they believe the Java EE community is headed, starting with Java EE 7. The focus of Java EE 7 and 8 is mostly on the cloud, specifically aiming to bring platform as a service (PaaS) providers and application developers together so that portable applications can be deployed on any cloud infrastructure and reap all its benefits in terms of scalability, elasticity, multitenancy, and so on. Most importantly, Java EE will leverage the modularization work in the underlying Java SE platform. Java EE will, of course, also update itself for trends such as HTML5, caching, NoSQL, ployglot programming, map/reduce, JSON, REST, and improvements to existing core APIs.CON7001 - HTML5 WebSocket and Java    Danny Coward - Java, Oracle*Wednesday, Oct 3, 4:30 PM - 5:30 PM - Parc 55 - Cyril Magnin IThe family of HTML5 technologies has pushed the pendulum away from rich client technologies and toward ever-more-capable Web clients running on today’s browsers. In particular, WebSocket brings new opportunities for efficient peer-to-peer communication, providing the basis for a new generation of interactive and “live” Web applications. This session examines the efforts under way to support WebSocket in the Java programming model, from its base-level integration in the Java Servlet and Java EE containers to a new, easy-to-use API and toolset that are destined to become part of the standard Java platform.

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• Five Things Learned at the BSR Conference in San Francisco on Nov 2nd-4th

  - by Evelyn Neumayr

  The BSR Conference 2011—“Redefining Leadership”—held from Nov 2nd to Nov 4th in San Francisco, with Oracle as one of the main sponsors, saw senior business executives, civil society representatives, and other experts from around the world gathering to share strategies and insights on the future of sustainability. The general conference sessions kicked off on November 2nd with a plenary address by former U.S. Vice President Al Gore. Other sessions were presented by CEOs of the caliber of Carl Bass (Autodesk), Brian Dunn (Best Buy), Carlos Brito (Anheuser-Busch InBev) and Ofra Strauss (Strauss Group). Here are five key highlights from the conference: 1.      The main leadership challenge is integrating sustainability into core business functions and overcoming short-termism. The “BSR GlobeScan State of Sustainable Business Poll 2011” - a survey of nearly 500 business leaders from 300 member companies - shows that 84% of respondents are optimistic that global businesses will embrace CSR/sustainability as part of their core strategies and operations in the next five years but consider integrating sustainability into their core business functions the key challenge. It is still difficult for many companies that are committed to the sustainability agenda to find investors that understand the long-term implications and as Al Gore said “Many companies are given the signal by the investors that it is the short term results that matter and that is a terribly debilitating force in the market.” 2.      Companies are required to address increasing compliance requirements and transparency in their supply chain, especially in relation with conflict minerals legislation and water management. The Dodd-Frank legislation, OECD guidelines, and the upcoming Securities and Exchange Commission (SEC) rules require companies to monitor upstream the sourcing of tin, tantalum, tungsten, and gold, but given the complexity of this issue companies need to collaborate and partner with peer companies in their industry as well as in other industries to understand how to address conflict minerals in their supply chains. The Institute of Public and Environmental Affairs’ (IPE) China Water Pollution Map enables the public to access thousands of environmental quality, discharge, and infraction records released by various government agencies. Empowered with this information, the public has the opportunity to place greater pressure on polluting companies to comply with environmental standards and create solutions to improve their performance. 3.      A new standard for reporting on supply chain greenhouse gas emissions is available. The New “Scope 3” Supply Chain Greenhouse Gas Inventory Standard, released on October 4th 2011, is the only international greenhouse gas emissions standard that accounts for the full lifecycle of a company’s products. It provides a framework for companies to account for indirect emissions outside of energy use, such as transportation, manufacturing, and distribution, and it incorporates both upstream and downstream impacts of a product. With key investors now listing supplier vulnerability to rising energy prices and disruptions of service as a key concern, greenhouse gas (GHG) management isn’t just for leading companies but a necessity for any business. 4.      Environmental, social, and corporate governance (ESG) reporting is becoming increasingly important to investors and other stakeholders. While European investors have traditionally driven the ESG agenda, U.S. investors are increasingly including ESG data in their analyses. This trend will likely increase as stakeholders continue to demand that an ESG lens be applied to their investments. Investors are increasingly looking to partner on sustainability, as they see the benefits of ESG providing significant returns on investment. 5.      Software companies are offering an increasing variety of solutions to help drive changes and measure performance internally, in supply chains, and across peer companies. The significant challenge is how to integrate different software systems to facilitate decision-making based on a holistic understanding of trade-offs. Jon Chorley, Chief Sustainability Officer and Vice President, Supply Chain Management Product Strategy at Oracle was a panelist in the “Trends in Sustainability Software” session and commented that, “How we think about our business decisions really comes down to how we think about cost. And as long as we don’t assign a cost to things that have an environmental impact or social impact, then we make decisions based on incomplete information. If we could include that in the process that determines ‘Is this product profitable? we would then have a much better decision.” For more information on BSR visit www.brs.org. You can also view highlights of the plenary session at http://www.bsr.org/en/bsr-conference/session-summaries/2011. Oracle is proud to be a sponsor of this BSR conference. By Elena Avesani, Principal Product Strategy Manager, Oracle          

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• How to get users to commit and collaborate to make a website valuable? [closed]

  - by AzizAG

  I own a website that requires a fairly largish amount of users to collaborate and commit occasionally to make the website valuable, so basically, the website can't be any valuable without users helping me put some content on it. To not get confused, I'm thinking of websites like Wikipedia, Stack Exchange and Yahoo! Answers, most of the content is based on peer effort. How do they actually get users interested and committed in the first place? What are the things I have to do to get users involved in the website and actually help me grow it bigger?

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• What are the processes of true Quality assurance?

  - by user970696

  Having read that Quality Assurance (QA) is focused on processes (while Quality Control (QC) is focused on the product), the books often mentions QA is the verification process - doing peer reviews, inspections etc. I still tend to think these are also QC as they check intermediate products. Elsewhere I have read that QA activity is e.g. choosing the right bugtracker. That sounds better to me in terms of process improvement. The question that close-voting person obviously missed is pretty clear: What are the activities that true QA should perform? I would appreciate the reference as I work on my thesis dealing with all these discrepancies and inconsistencies in the software quality world.

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• Provocative Tweets From the Dachis Social Business Summit

  - by Mike Stiles

  On June 20, all who follow social business and how social is changing how we do business and internal business structures, gathered in London for the Dachis Social Business Summit. In addition to Oracle SVP Product Development, Reggie Bradford, brands and thought leaders posed some thought-provoking ideas and figures. Here are some of the most oft-tweeted points, and our thoughts that they provoked. Tweet: The winners will be those who use data to improve performance.Thought: Everyone is dwelling on ROI. Why isn’t everyone dwelling on the opportunity to make their product or service better (as if that doesn’t have an effect on ROI)? Big data can improve you…let it. Tweet: High performance hinges on integrated teams that interact with each other.Thought: Team members may work well with each other, but does the team as a whole “get” what other teams are doing? That’s the key to an integrated, companywide workforce. (Internal social platforms can facilitate that by the way). Tweet: Performance improvements come from making the invisible visible.Thought: Many of the factors that drive customer behavior and decisions are invisible. Through social, customers are now showing us what we couldn’t see before…if we’re paying attention. Tweet: Games have continuous feedback, which is why they’re so engaging.  Apply that to business operations.Thought: You think your employees have an obligation to be 100% passionate and engaged at all times about making you richer. Think again. Like customers, they must be motivated. Visible insight that they’re advancing on their goals helps. Tweet: Who can add value to the data?  Data will tend to migrate to where it will be most effective.Thought: Not everybody needs all the data. One team will be able to make sense of, use, and add value to data that may be irrelevant to another team. Like a strategized football play, the data has to get sent to the spot on the field where it’s needed most. Tweet: The sale isn’t the light at the end of the tunnel, it’s the start of a new marketing cycle.Thought: Another reason the ROI question is fundamentally flawed. The sale is not the end of the potential return on investment. After-the-sale service and nurturing begins where the sales “victory” ends. Tweet: A dead sale is one that’s not shared.  People must be incentivized to share.Thought: Guess what, customers now know their value to you as marketers on your behalf. They’ll tell people about your product, but you’ve got to answer, “Why should I?” And you’ve got to answer it with something substantial, not lame trinkets. Tweet: Social user motivations are competition, affection, excellence and curiosity.Thought: Your followers will engage IF; they can get something for doing it, love your culture so much they want you to win, are consistently stunned at the perfection and coolness of your products, or have been stimulated enough to want to know more. Tweet: In Europe, 92% surveyed said they couldn’t care less about brands.Thought: Oh well, so much for loving you or being impressed enough with your products & service that they want you to win. We’ve got a long way to go. Tweet: A complaint is a gift.Thought: Our instinct where complaints are concerned is to a) not listen, b) dismiss the one who complains as a kook, c) make excuses, and d) reassure ourselves with internal group-think that they’re wrong and we’re right. It’s the perfect recipe for how to never, ever grow or get better. In a way, this customer cares more than you do. Tweet: 78% of consumers think peer recommendation is the best form of advertising.  Eventually, engagement is going to eat advertising.Thought: Why is peer recommendation best? Trust. If a friend tells me how great a movie was, I believe him. He has credibility with me. He’s seen it, and he could care less if I buy a ticket. He’s telling me it was awesome because he sincerely believes that it was.  That’s gold. Tweet: 86% of customers are willing to pay more for a better customer experience. Thought: This “how mad can we make our customers without losing them” strategy has to end. The customer experience has actual monetary value, money you’re probably leaving on the table. @mikestilesPhoto: stock.xchng

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• i need two gimps

  - by truth seeking fire walker

  i am using a vintage computer for my home use and to be frank i am satisfied with it since it is what i can afford now -- i use Ubuntu derived peer Linux OS and have gimp 2.8 working good and meets my needs. but due to the vintage configuration that i have it takes a long time to load and work but i need it for my little works related with educational helps - in most of the times i don't need my tweaked up gimp with all the plug ins and extra brushes i need a faster gimp so i want to have gimp 2.6 or even 2.4 in my system along with the current one. have pinta and like softwares but to meet my needs i definitely need gimp my question is can i have two different versions of gimp at the same time which i can load from the menu itself please help me thanking you all for allowing me breath the fresh air of open source --

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• Why make JavaScript class based?

  - by Carnotaurus

  JavaScript is a prototype language. To turn it into a class based language adds little value? I am not talking about best-practice here. I remember reading an article from way back, which claimed that the class-based worldview is perceivably more flawed than the one of prototypes. My summary can be found here: http://carnotaurus.tumblr.com/post/3248631891/class-based-javascript-or-not. I am resisting to use the class-based jQuery add-on and other attempts at faciliating class-based JavaScript. Peer pressure is strong but is there a stronger theoretical or practical reason why I stop resisting?

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• Collaborative Whiteboard using WebSocket in GlassFish 4 - Text/JSON and Binary/ArrayBuffer Data Transfer (TOTD #189)

  - by arungupta

  This blog has published a few blogs on using JSR 356 Reference Implementation (Tyrus) as its integrated in GlassFish 4 promoted builds. TOTD #183: Getting Started with WebSocket in GlassFish TOTD #184: Logging WebSocket Frames using Chrome Developer Tools, Net-internals and Wireshark TOTD #185: Processing Text and Binary (Blob, ArrayBuffer, ArrayBufferView) Payload in WebSocket TOTD #186: Custom Text and Binary Payloads using WebSocket One of the typical usecase for WebSocket is online collaborative games. This Tip Of The Day (TOTD) explains a sample that can be used to build such games easily. The application is a collaborative whiteboard where different shapes can be drawn in multiple colors. The shapes drawn on one browser are automatically drawn on all other peer browsers that are connected to the same endpoint. The shape, color, and coordinates of the image are transfered using a JSON structure. A browser may opt-out of sharing the figures. Alternatively any browser can send a snapshot of their existing whiteboard to all other browsers. Take a look at this video to understand how the application work and the underlying code. The complete sample code can be downloaded here. The code behind the application is also explained below. The web page (index.jsp) has a HTML5 Canvas as shown: <canvas id="myCanvas" width="150" height="150" style="border:1px solid #000000;"></canvas> And some radio buttons to choose the color and shape. By default, the shape, color, and coordinates of any figure drawn on the canvas are put in a JSON structure and sent as a message to the WebSocket endpoint. The JSON structure looks like: { "shape": "square", "color": "#FF0000", "coords": { "x": 31.59999942779541, "y": 49.91999053955078 }} The endpoint definition looks like: @WebSocketEndpoint(value = "websocket",encoders = {FigureDecoderEncoder.class},decoders = {FigureDecoderEncoder.class})public class Whiteboard { As you can see, the endpoint has decoder and encoder registered that decodes JSON to a Figure (a POJO class) and vice versa respectively. The decode method looks like: public Figure decode(String string) throws DecodeException { try { JSONObject jsonObject = new JSONObject(string); return new Figure(jsonObject); } catch (JSONException ex) { throw new DecodeException("Error parsing JSON", ex.getMessage(), ex.fillInStackTrace()); }} And the encode method looks like: public String encode(Figure figure) throws EncodeException { return figure.getJson().toString();} FigureDecoderEncoder implements both decoder and encoder functionality but thats purely for convenience. But the recommended design pattern is to keep them in separate classes. In certain cases, you may even need only one of them. On the client-side, the Canvas is initialized as: var canvas = document.getElementById("myCanvas");var context = canvas.getContext("2d");canvas.addEventListener("click", defineImage, false); The defineImage method constructs the JSON structure as shown above and sends it to the endpoint using websocket.send(). An instant snapshot of the canvas is sent using binary transfer with WebSocket. The WebSocket is initialized as: var wsUri = "ws://localhost:8080/whiteboard/websocket";var websocket = new WebSocket(wsUri);websocket.binaryType = "arraybuffer"; The important part is to set the binaryType property of WebSocket to arraybuffer. This ensures that any binary transfers using WebSocket are done using ArrayBuffer as the default type seem to be blob. The actual binary data transfer is done using the following: var image = context.getImageData(0, 0, canvas.width, canvas.height);var buffer = new ArrayBuffer(image.data.length);var bytes = new Uint8Array(buffer);for (var i=0; i<bytes.length; i++) { bytes[i] = image.data[i];}websocket.send(bytes); This comprehensive sample shows the following features of JSR 356 API: Annotation-driven endpoints Send/receive text and binary payload in WebSocket Encoders/decoders for custom text payload In addition, it also shows how images can be captured and drawn using HTML5 Canvas in a JSP. How could this be turned in to an online game ? Imagine drawing a Tic-tac-toe board on the canvas with two players playing and others watching. Then you can build access rights and controls within the application itself. Instead of sending a snapshot of the canvas on demand, a new peer joining the game could be automatically transferred the current state as well. Do you want to build this game ? I built a similar game a few years ago. Do somebody want to rewrite the game using WebSocket APIs ? :-) Many thanks to Jitu and Akshay for helping through the WebSocket internals! Here are some references for you: JSR 356: Java API for WebSocket - Specification (Early Draft) and Implementation (already integrated in GlassFish 4 promoted builds) Subsequent blogs will discuss the following topics (not necessary in that order) ... Error handling Interface-driven WebSocket endpoint Java client API Client and Server configuration Security Subprotocols Extensions Other topics from the API

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• What is "egoless programming"?

  - by Bob Murphy

  I first heard this term about fifteen years ago. My understanding is similar to that described in the Wikipedia article and a TechRepublic article: you work with your colleagues in a "friendly, collegiate way in which personal feelings are put aside". It includes things like doing peer reviews with mutual respect and a desire to learn, and not feeling like you "own" code, so if somebody has a suggestion or says there's a bug or needs to change it, you don't get defensive about it. I've also thought it was largely about having an attitude that makes for good relations with other programmers with the goal of improving the code. So I haven't seen it as being incompatible with taking pride in the quality of your work or feeling regret if something you did caused your customer a problem. However, an answer to a recent question makes me think some other programmers have different understandings about "egoless programming". So what is the correct definition? And what are its implications?

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• Chrome Mobile: The Mobile Web Developers Toolkit (Part 2)

  Chrome Mobile: The Mobile Web Developers Toolkit (Part 2) Building for mobile web requires a different mindset than desktop web development, and a different set of tools. The tools we're used to using often aren't available or would take up too much screen real estate. And going back to the dark ages of tweak/save/deploy/test/repeat isn't exactly optimal, so what can we do? Thankfully there are a number of great options - from remote debugging to emulation, mobile browsers are offering more and more tools to make our lives easier. We'll take a look at a couple of tools that you can use today to make cross platform mobile web development easier and then peer into the crystal ball to see what tools may bring in the future. Join us for Part 2 - as we take a look at a some of the many tools to make testing the mobile web easier. From: GoogleDevelopers Views: 0 0 ratings Time: 01:00:00 More in Science & Technology

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• Chrome Mobile: The Mobile Web Developers Toolkit (Part 1)

  Chrome Mobile: The Mobile Web Developers Toolkit (Part 1) Building for mobile web requires a different mindset than desktop web development, and a different set of tools. The tools we're used to using often aren't available or would take up too much screen real estate. And going back to the dark ages of tweak/save/deploy/test/repeat isn't exactly optimal, so what can we do? Thankfully there are a number of great options - from remote debugging to emulation, mobile browsers are offering more and more tools to make our lives easier. We'll take a look at a couple of tools that you can use today to make cross platform mobile web development easier and then peer into the crystal ball to see what tools may bring in the future. Join us for Part 1 - as we take a look at a few boiler plates, frameworks and helpful libraries for building the mobile web. From: GoogleDevelopers Views: 0 0 ratings Time: 01:00:00 More in Science & Technology

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• Is this a valid HTTP response? [migrated]

  - by fatmck

  I am writing a web server using C++, which responds the following for all requests: static std::string rsp[] = { "HTTP/1.1 200 OK\r\n", "Server: WebServer\r\n", "Content-Type: text/html\r\n", "Content-Length: 3\r\n", "Connection: close\r\n", "\r\n", "123" }; the content "123" can be successfully shown in browser. But when I use apache-ab to do a test, ab always show errors like this: ab -n 1 -c 1 http://127.0.0.1:1080/ apr_socket_recv: Connection reset by peer (104) I thought that I'm closing the socket too quickly, so I commented the close() function. But ab just hold, ab seems to be waiting for a complete response.

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