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  • How to Get from Here to There

    - by Tom Caldecott-Oracle
    Six Oracle OpenWorld Sessions to Help Transform Your Business You’re a bit cloudy on how to implement an enterprise resource planning (ERP), human capital management (HCM), or customer experience (CX) cloud environment. You want to make a move to improve the productivity of your employees with mobility.   Let Oracle Consulting be your guide at Oracle OpenWorld. You can choose from six conference sessions that focus on business transformation—for ERP, HCM, CX, analytics, mobility, and private cloud. Oracle Consulting experts and your industry peers will share insights, best-in-class methodologies, and critical lessons learned in transforming businesses with new solutions built on Oracle technology.  Learn more. And enjoy the journey.

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  • Is it possible to allow the User Account to access the 'Volumes' without asking the Administrator's password?

    - by Tom
    Am the administrator of my Ubuntu system. Recently I added a new user account. But when ever the user tries to access or open the 'Volumes'(Drives where movies, songs and other files are stored) it asks for the Administrator's password. I created the user account to my other family members and I don't want to tell them my password. So is it possible to allow them to access the Volumes without asking Administrator's password ? UPDATE : Ubuntu was installed alongside Windows in my system. I will provide a screenshot of the Volume details -

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  • Why my sub-domain redirect returns a blank page?

    - by Tom Brito
    I have the domain http://dropbox.tombrito.com/ (on GoDaddy) forwarding with masking to www.dropbox.com/sh/k6ypvx4y4kf0gu6/rdjxQ1b1OL It was working fine some time ago, but now the result is a blank page (although the Dropbox's favicon appears correctly in the browser's tab title). The DNS manager shows me a single entry with the name "dropbox": A dropbox 64.202.189.170 Any idea what's wrong? Related: Why my domain redirect on Google Apps is returning 404?

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  • Where to find current information on quality of released games as software products?

    - by Tom
    As a gamer, one thing I have learned I need to be savvy about is knowing whether SomeBigGame is actually unstable or otherwise problematic as a piece of software (riddled with invasive DRM products, only runs well on a particular video driver version, crashes on non-English-language systems, etc.). I know that game news media can sometimes be relied upon to report on some problems, but I doubt they bother to cover smaller or indie titles. An example: I've started playing Transformice on Kongregate, and I'm considering installing the downloadable client (it is an online multiplayer game). The part of me that cares about data privacy and maintaining a clean-and-healthy PC wants to know whether there is a place I can check to find out more about a title-as-software than "it is not a literal virus." Put another way: where would you not want to see your game receive lots of attention?

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  • Is there a proven concept to website reverse certificate authentication?

    - by Tom
    We're looking at exposing some of our internal application data externally via a website. The actual details of the website aren't that interesting, it'll be built using ASP.NET/IIS etc, that might be relevant. With this, I'm essentially I'm looking for a mechanism to authenticate users viewing my website. This sounds trivial, a username/password is typically fine, but I want more. Now I've read plenty about SSL/x.509 to realise that the CA determines that we're alright, and that the user can trust us. But I want to trust the user, I want the user to be rejected if they don't have the correct credentials. I've seen a system for online banking whereby the bank issues a certificate which gets installed on the users' computer (it was actually smartcard based). If the website can't discover/utilise the key-pair then you are immediately rejected! This is brutal, but necessary. Is there a mechanism where I can do the following: Generate a certificate for a user Issue the certificate for them to install, it can be installed on 1 machine If their certificate is not accessible, they are denied all access A standard username/password scheme is then used after that SSL employed using their certificate once they're "in" This really must already exist, please point me in the right direction! Thanks for your help :)

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  • Recommanded cloud/cdn for my website? [closed]

    - by Tom
    Possible Duplicate: How to find web hosting that meets my requirements? Currently we are using Cloudflare (Business) and it's great, except that our website is crushing for around 1 minute every 2 hours on average, and it seems they don't like to give us support. So, we are looking for alternative. I thought about Incapsula. Currently we have around 1mil pageviews daily. Can you guys please recommand for us what to use/do? Thanks!

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  • How to install ubuntu from desktop w/o internet access?

    - by Tom P.
    I am trying to install ubuntu on a netbook without a CD drive. I first attempted a flash drive, but it did not work, so I decided to use the flash drive to transfer the application that can install from the desktop. However, this is a secondhand school computer that needs its borderline spyware security suite wiped before it can access the internet, so I cannot use the install from desktop application. Do I have any other options? I do have access to an external CD drive that I could try, but I am unconvinced that I would get different results since it would have to go through a USB port. Any and all input is very much appreciated!

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  • Usefull skills from a computer science degree

    - by Tom Squires
    I did my degree in physics and moved later into programming. I have two and a half years experience under my belt and like to think I write good code. I am, however, concerned that not doing a compsci degree has left holes in my knowledge. I would like to fill those up now since I know I want to be doing programming for the rest of my career. What skills/techniques did you learn in your compsci degree that one wouldn't pick up from on-the-job programming?

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  • Update to 13.10 without GUI access

    - by Tom
    After upgrading 13.04 with the latest patches, I'm getting some really weird problems -- namely, logging in at the GUI just dumps me back at the GUI login screen. I can, however, get command line access from Ctrl-Alt-F1, and remotely via SSH. Given that I was doing these updates to step to 13.10, I figure I might as well continue the process, and then deal with the fallout once I get there. However, how can this be achieved with only the command line, and no X available? The only method I've found thus far is to run 'update-manager', which does not appear to have a CLI mode (and will not start without access to X). What's the solution? Thanks!

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  • Initiating processing in a RESTful manner

    - by tom
    Let's say you have a resource that you can do normal PUT/POST/GET operations on. It represents a BLOB of data and the methods retrieve representations of the data, be they metadata about the BLOB or the BLOB itself. The resource is something that can be processed by the server on request. In this instance a file that can be parsed multiple times. How do I initiate that processing? It's a bit RPC like. Is there best practice around this? (First time on programmers. This is the right place for this sort of question, right?)

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  • How to complete remove macbuntu (even by formatting)?

    - by Tom Brito
    I just format my root partition (and keep my Home partition), and reinstalled Ubuntu 10.10. But the theme of macbuntu is still there. If I try to run it's "uninstall.sh" even with "--force" I get "The script is not able to determine what version is currently installed" (the version is 10.10). By the way, I also deleted ".macbuntu" from my Home directory, but I'm still not able to uninstall it. Any hint?

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  • September Independent Oracle User Group (IOUG) Regional Events:

    - by Mandy Ho
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif";} September 5, 2012 – Denver, CO Oracle 11g Database Upgrade Seminar Join Roy Swonger, Senior Director of software development at Oracle to learn about upgrading to Oracle Database 11g. Topics include: All the required preparatory steps Database upgrade strategies Post-upgrade performance analysis Helpful tips and common pitfalls to watch out for http://www.oracle.com/webapps/events/ns/EventsDetail.jsp?p_eventId=152242&src=7598177&src=7598177&Act=4 September 6, 2012 – Salt Lake City, UT Fall Symposium 2012 Plan to join us for our annual fall event on Sept 6. They day will be filled with learning and networking with tracks focused on Applications, APEX, BI, Development and DBA Topics. This event is free for UTOUG members to attend, but please register. http://www.utoug.org/apex/f?p=972:2:6686308836668467::::P2_EVENT_ID:121 September 6, 2012 – Portland, OR Oracle’s Hands on Workshop Series focused on providing Defense-in-Depth Solutions to secure data at the source, reduce risk and simplify compliance The Oracle Database Security Workshop is a one-day hands-on session for IT Managers, IT Security Architects and Oracle DBAs who are looking for solutions to address their information protection, privacy, and accountability challenges within their Oracle database environment. Most security programs offered today fail toadequately address database security. Customers continue to be challenged tosecure information against loss and protect the integrity of sensitiveinformation like critical financial data, personally identifiable information(PII) and credit card data for PCI compliance. http://nwoug.org/content.aspx?page_id=87&club_id=165905&item_id=241082 September 11, 2012 – Montreal, QC APEXposed! For APEX aficionados – join ODTUG in Montreal, September 11-12 for APEXposed! Topics will include Dynamic Actions, Plug-ins, Tuning, and Building Mobile Apps. The cost is $399 US and early registration ends August 15th. For more information: http://www.odtugapextraining.com  September 11, 2012 – Philadelphia, PA Big Data & What are we still doing wrong with Tom Kyte Tom Kyte is a Senior Technical Architect in Oracle's Server Technology Division. Tom is the Tom behind the AskTom column in Oracle Magazine and is also the author of Expert Oracle Database Architecture (Apress, 2005/2009) among other books Abstract: Big Data The term "big data" draws a lot of attention, but behind the hype there's a simple story. For decades, companies have been making business decisions based on transactional data stored in relational databases. However, beyond that critical data is a potential treasure trove of less structured data: weblogs, social media, email, sensors, and photographs that can be mined for useful information. This presentation will take a look at what Big Data is and means - and Oracle's strategy for handling it Abstract: What are we still doing wrong? I've given many best practices presentations in the last 10 years. I've given many worst practices presentations in the last 10 years. I've seen some things change over the last ten years and many other things stay exactly the same. In this talk - we'll be taking a look at the good and the bad - what we do right and what we continue to do wrong over and over again. We'll look at why "Why" is probably the right initial answer to most any question. We'll look at how we get to "Know what we Know", and why that can be both a help and a hindrance. We'll peek at "Best Practices" and tie them into what I term "Worst Practices". In short, a talk on the good and the bad. Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif";} http://ioug.itconvergence.com/pls/apex/f?p=207:27:3669516430980563::NO September 12, 2012- New York, NY NYOUG Fall General Meeting “Trends in Database Administration and Why the Future of Database Administration is the Vdba” http://www.nyoug.org/upcoming_events.htm#General_Meeting1 September 21, 2012 – Cleveland, OH Oracle Database 11g for Developers: What You need to know or Oracle Database 11g New Features for Developers Attendees are introduced to the new and improved features of Oracle 11g (both Oracle 11g R1 and Oracle 11g R2) that directly impact application development. Special emphasis is placed on features that reduce development time, make development simpler, improve performance, or speed deployment. Specific topics include: New SQL functions, virtual columns, result caching, XML improvements, pivot statements, JDBC improvements, and PL/SQL enhancements such as compound triggers. http://www.neooug.org/ September 24, 2012 – Ottawa, ON Introduction to Oracle Spatial The free Oracle Locator functionality, and the Oracle Spatial option which dramatically extends Locator, are very useful, but poorly understood capabilities of the database. In the afternoon we will extend into additional areas selected from: storage and performance; answering business problems with spatial queries; using Oracle Maps in OBIEE; an overview and capabilities of Oracle Topology; under the covers with GeoCoding. Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif";} http://www.oug-ottawa.org/pls/htmldb/f?p=327:27:4209274028390246::NO

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  • Does subTable support reRender?

    - by Tom
    Here is a minimal rich:dataTable with an a4j:commandLink inside. When clicked it sends an AJAX request to my bean and reRenders the dataTable. <rich:dataTable id="dataTable" value="#{carManager.all}" var="item"> <rich:column> <f:facet name="header">name</f:facet> <h:outputText value="#{item.name}" /> </rich:column> <rich:column> <f:facet name="header">action</f:facet> <a4j:commandLink reRender="dataTable" value="Delete" action="#{carForm.delete}"> <f:setPropertyActionListener value="#{item.id}" target="#{carForm.id}" /> <f:param name="from" value="list" /> </a4j:commandLink> </rich:column> </rich:dataTable> The exmaple obove works fine so far. But when I add a rich:subTable to the table, reRendering fails... <rich:dataTable id="dataTable" value="#{garageManager.all}" var="garage"> <f:facet name="header"> <rich:columnGroup> <rich:column>name</rich:column> <rich:column>action</rich:column> </rich:columnGroup> </f:facet> <rich:column colspan="2"> <h:outputText value="#{garage.name}" /> </rich:column> <rich:subTable value="#{garage.cars}" var="car"> <rich:column><h:ouputText value="#{car.name}" /></rich:column> <rich:column> <a4j:commandLink reRender="dataTable" value="Delete" action="#{carForm.delete}"> <f:setPropertyActionListener value="#{item.id}" target="#{carForm.id}" /> <f:param name="from" value="list" /> </a4j:commandLink> </rich:column> </rich:column> </rich:dataTable> Now the rich:dataTable is not rerendered but the item gets deleted since the item does not show up after a complete page refresh. Does subTable support reRender the way i'd like to use it here? Tanks Tom

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  • Does a nested subTable break reRender?

    - by Tom
    Here is a minimal rich:dataTable with an a4j:commandLink inside. When clicked it sends an AJAX request to my bean and reRenders the dataTable. <rich:dataTable id="dataTable" value="#{carManager.all}" var="item"> <rich:column> <f:facet name="header">name</f:facet> <h:outputText value="#{item.name}" /> </rich:column> <rich:column> <f:facet name="header">action</f:facet> <a4j:commandLink reRender="dataTable" value="Delete" action="#{carForm.delete}"> <f:setPropertyActionListener value="#{item.id}" target="#{carForm.id}" /> <f:param name="from" value="list" /> </a4j:commandLink> </rich:column> </rich:dataTable> The exmaple obove works fine so far. But when I add a rich:subTable to the table, reRendering fails... <rich:dataTable id="dataTable" value="#{garageManager.all}" var="garage"> <f:facet name="header"> <rich:columnGroup> <rich:column>name</rich:column> <rich:column>action</rich:column> </rich:columnGroup> </f:facet> <rich:column colspan="2"> <h:outputText value="#{garage.name}" /> </rich:column> <rich:subTable value="#{garage.cars}" var="car"> <rich:column><h:ouputText value="#{car.name}" /></rich:column> <rich:column> <a4j:commandLink reRender="dataTable" value="Delete" action="#{carForm.delete}"> <f:setPropertyActionListener value="#{item.id}" target="#{carForm.id}" /> <f:param name="from" value="list" /> </a4j:commandLink> </rich:column> </rich:column> </rich:dataTable> Now the rich:dataTable is not rerendered but the item gets deleted since the item does not show up after a complete page refresh. Why does subTable break support for reRender-ing the way i'd like to use it here? Tanks Tom

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  • understanding logic of dijit css and styles

    - by Tom
    Hi, I am trying to use dijit.InlineEditBox. I have put the following code in my HTML, using the example in the dojo docs: <script type="text/javascript"> dojo.require("dijit.InlineEditBox"); dojo.require("dojo.parser"); dojo.require("dijit.form.TextBox"); function editableHeaderOnChange(id, arg){ alert("details changed with id " + id + " and arguments "+arg); } </script> ... <span id="myText" dojoType="dijit.InlineEditBox" onChange="editableHeaderOnChange(this.id,arguments[0])" autoSave="true" title="My Text">click to edit me</span> I am using tundra theme. It works, however it doesn't look so good. The widget has its own style, which doesn't fit my CSS. I used firebug to locate the source of the problem. The widget creates many nested div/span elements, each has it's own style (element style in firebug): <span id="dijit__InlineEditor_0" class="dijitReset dijitInline" style="margin: 0px; position: absolute; visibility: hidden; display: block; opacity: 0;" ...> <input type="text" autocomplete="off" class="dijit dijitReset dijitLeft dijitTextBox" id="dijit_form_TextBox_0" style="line-height: 20px; font-weight: 400; font-family: Trebuchet MS,Helvetica,Arial,Verdana; font-size: 14.5167px; font-style: normal; width: 100%;"> ...> </span></span> (showing only the relevant parts...) to get the visual that I want, which will not break to a newline, I need to change the width of dijit_form_TextBox_0** to 50%, and the positioning of dijit__InlineEditor_0 to display: inline**; or to change the positioning of everything (most of my layout is floated, so position: absolute doesn't fit) I cannot address those span elements in my css to change the properties, because the element.style has priority, of course. I don't understand the logic in this system... why is dijit generating the style directly inside the element? how can I change these properties? Thanks Tom

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  • Why does a subTable break a4j:commandLink's reRender?

    - by Tom
    Here is a minimal rich:dataTable example with an a4j:commandLink inside. When clicked, it sends an AJAX request to my bean and reRenders the dataTable. <rich:dataTable id="dataTable" value="#{carManager.all}" var="item"> <rich:column> <f:facet name="header">name</f:facet> <h:outputText value="#{item.name}" /> </rich:column> <rich:column> <f:facet name="header">action</f:facet> <a4j:commandLink reRender="dataTable" value="Delete" action="#{carForm.delete}"> <f:setPropertyActionListener value="#{item.id}" target="#{carForm.id}" /> <f:param name="from" value="list" /> </a4j:commandLink> </rich:column> </rich:dataTable> The exmaple obove works fine so far. But when I add a rich:subTable (grouping the cars by garage for example) to the table, reRendering fails... <rich:dataTable id="dataTable" value="#{garageManager.all}" var="garage"> <f:facet name="header"> <rich:columnGroup> <rich:column>name</rich:column> <rich:column>action</rich:column> </rich:columnGroup> </f:facet> <rich:column colspan="2"> <h:outputText value="#{garage.name}" /> </rich:column> <rich:subTable value="#{garage.cars}" var="car"> <rich:column><h:ouputText value="#{car.name}" /></rich:column> <rich:column> <a4j:commandLink reRender="dataTable" value="Delete" action="#{carForm.delete}"> <f:setPropertyActionListener value="#{item.id}" target="#{carForm.id}" /> <f:param name="from" value="list" /> </a4j:commandLink> </rich:column> </rich:column> </rich:dataTable> Now the rich:dataTable is not rerendered but the item gets deleted since the item does not show up after a manual page refresh. Why does subTable break support for reRender-ing here? Tanks Tom

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  • architecture python question

    - by tom smith
    hi. creating a distributed crawling python app. it consists of a master server, and associated client apps that will run on client servers. the purpose of the client app is to run across a targeted site, to extract specific data. the clients need to go "deep" within the site, behind multiple levels of forms, so each client is specifically geared towards a given site. each client app looks something like main: parse initial url call function level1 (data1) function level1 (data) parse the url, for data1 use the required xpath to get the dom elements call the next function call level2 (data) function level2 (data2) parse the url, for data2 use the required xpath to get the dom elements call the next function call level3 function level3 (dat3) parse the url, for data3 use the required xpath to get the dom elements call the next function call level4 function level4 (data) parse the url, for data4 use the required xpath to get the dom elements at the final function.. --all the data output, and eventually returned to the server --at this point the data has elements from each function... my question: given that the number of calls that is made to the child function by the current function varies, i'm trying to figure out the best approach. each function essentialy fetches a page of content, and then parses the page using a number of different XPath expressions, combined with different regex expressions depending on the site/page. if i run a client on a single box, as a sequential process, it'll take awhile, but the load on the box is rather small. i've thought of attempting to implement the child functions as threads from the current function, but that could be a nightmare, as well as quickly bring the "box" to its knees! i've thought of breaking the app up in a manner that would allow the master to essentially pass packets to the client boxes, in a way to allow each client/function to be run directly from the master. this process requires a bit of rewrite, but it has a number of advantages. a bunch of redundancy, and speed. it would detect if a section of the process was crashing and restart from that point. but not sure if it would be any faster... i'm writing the parsing scripts in python.. so... any thoughts/comments would be appreciated... i can get into a great deal more detail, but didn't want to bore anyone!! thanks! tom

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  • Middleware with generic communication media layer

    - by Tom
    Greetings all, I'm trying to implement middleware (driver) for an embedded device with generic communication media layer. Not sure what is the best way to do it so I'm seeking an advice from more experienced stackoverflow users:). Basically we've got devices around the country communicating with our servers (or a pda/laptop in used in field). Usual form of communication is over TCP/IP, but could be also using usb, RF dongle, IR, etc. The plan is to have object corresponding with each of these devices, handling the proprietary protocol on one side and requests/responses from other internal systems on the other. The thing is how create something generic in between the media and the handling objects. I had a play around with the TCP dispatcher using boost.asio but trying to create something generic seems like a nightmare :). Anybody tried to do something like that? What is the best way how to do it? Example: Device connects to our Linux server. New middleware instance is created (on the server) which announces itself to one of the running services (details are not important). The service is responsible for making sure that device's time is synchronized. So it asks the middleware what is the device's time, driver translates it to device language (protocol) and sends the message, device responses and driver again translates it for the service. This might seem as a bit overkill for such a simple request but imagine there are more complex requests which the driver must translate, also there are several versions of the device which use different protocol, etc. but would use the same time sync service. The goal is to abstract the devices through the drivers to be able to use the same service to communicate with them. Another example: we find out that the remote communications with the device are down. So we send somebody out with PDA, he connects to the device using USB cable. Starts up the application which has the same functionality as the timesync service. Again middleware instance is created (on the PDA) to translate communication between application and the device this time only using USB/serial media not TCP/IP as in previous example. I hope it makes more sense now :) Cheers, Tom

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  • How to assign WPF resources to other resource tags

    - by Tom
    This is quite obscure, I may just be missing something extremely simple. Scenario 1 Lets say I create a gradient brush, like this in my <Window.Resources> section: <LinearGradientBrush x:Key="GridRowSelectedBackBrushGradient" StartPoint="0,0" EndPoint="0,1"> <GradientStop Color="#404040" Offset="0.0" /> <GradientStop Color="#404040" Offset="0.5" /> <GradientStop Color="#000000" Offset="0.6" /> <GradientStop Color="#000000" Offset="1.0" /> </LinearGradientBrush> Then much later on, I want to override the HighlightBrushKey for a DataGrid. I have basically done it like this (horrible); <LinearGradientBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" GradientStops="{Binding Source={StaticResource GridRowSelectedBackBrushGradient}, Path=GradientStops}" StartPoint="{Binding Source={StaticResource GridRowSelectedBackBrushGradient}, Path=StartPoint}" EndPoint="{Binding Source={StaticResource GridRowSelectedBackBrushGradient}, Path=EndPoint}" /> This is obviously not the most slick way of referencing a resource. I also came up with the following problem, which is almost identical. Scenario 2 Say I created two colors in my <Window.Resources> markup, like so: <SolidColorBrush x:Key="DataGridRowBackgroundBrush" Color="#EAF2FB" /> <SolidColorBrush x:Key="DataGridRowBackgroundAltBrush" Color="#FFFFFF" /> Then later on, I want to supply them in an Array, which feeds the ConverterParameter on a Binding so I can supply the custom Converter with my static resource instances: <Setter Property="Background"> <Setter.Value> <Binding RelativeSource="{RelativeSource Mode=Self}" Converter="{StaticResource BackgroundBrushConverter}"> <Binding.ConverterParameter> <x:Array Type="{x:Type Brush}"> <SolidColorBrush Color="{Binding Source={StaticResource DataGridRowBackgroundBrush}, Path=Color}" /> <SolidColorBrush Color="{Binding Source={StaticResource DataGridRowBackgroundAltBrush}, Path=Color}" /> </x:Array> </Binding.ConverterParameter> </Binding> </Setter.Value> </Setter> What I've done is attempt to rereference an existing resource, but in my efforts I've actually recreated the resource, and bound the properties so they match. Again, this is not ideal. Because I've now hit this problem at least twice, is there a better way? Thanks, Tom

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  • SQL: How to select rows from a table while ignoring the duplicate field values?

    - by Maxxon
    How to select rows from a table while ignoring the duplicate field values? Here is an example: id user_id message 1 Adam "Adam is here." 2 Peter "Hi there this is Peter." 3 Peter "I am getting sick." 4 Josh "Oh, snap. I'm on a boat!" 5 Tom "This show is great." 6 Laura "Textmate rocks." What i want to achive is to select the recently active users from my db. Let's say i want to select the 5 recently active users. The problem is, that the following script selects Peter twice. mysql_query("SELECT * FROM messages ORDER BY id DESC LIMIT 5 "); What i want is to skip the row when it gets again to Peter, and select the next result, in our case Adam. So i don't want to show my visitors that the recently active users were Laura, Tom, Josh, Peter, and Peter again. That does not make any sense, instead i want to show them this way: Laura, Tom, Josh, Peter, (skipping Peter) and Adam. Is there an SQL command i can use for this problem?

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  • Using SDL Tridion 2011 Core Service to create Components programatically

    - by user1428019
    I have seen some of the questions/answers related to this topic here, however still I am not getting the suggestion which I want. So I am posting my question again here, and I would be thankful for your valuable time and answers. I would like to create “Component, Page, SG, Publication, Folders “ via programmatically in SDL Tridion Content Manager, and later on, I would like to add programmatically created components in Page and attach CT,PT for that page, and finally would like to publish the page programmatically. I have done these all the activities in SDL Tridion 2009 using TOM API (Interop DLL's), and I tried these activities in SDL Tridion 2011 using TOM.Net API. It was not working and later on I came to know that, TOM.Net API will not support these kinds of works and it is specifically only for Templates and Event System. And finally I came to know I have to go for Core services to do these kinds of stuffs. My Questions: When I create console application to create component programmatically using core service, what are the DLL’s I have to add as reference? Earlier, I have created the exe and ran in the TCM server, the exe created all the stuffs, can I used the same approach using core services too? Will it work? Is BC still available or Core Service replaced BC? (BC-Business Connector) Can anyone send some code snippet to create Component/Page (complete class file will be helpful to understand better) Thanks Jai

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  • C# UDP decoding datagrams fails randomly

    - by Tom Frey
    Hi, I'm experiencing an issue in a multi threaded application and have been debugging it for the last 3 days but for the life of it can not figure it out. I'm writing this, hoping that I either have a DUH moment when typing this or somebody sees something obvious in the code snippets I provide. Here's what's going on: I've been working on a new UDP networking library and have a data producer that multicasts UDP datagrams to several receiver applications. The sender sends on two different sockets that are bound to separate UDP multicast addresses and separate ports. The receiver application also creates two sockets and binds each one to one of the sender's multicast address/port. When the receiver receives the datagram, it copies it from the the buffer in a MemoryStream which is then put onto a thread safe queue, where another thread reads from it and decodes the data out of the MemoryStream. Both sockets have their own queues. What happens now is really weird, it happens randomly, non-reproducible and when I run multiple receiver applications, it only happens randomly on one of them every now and then. Basically, the thread that reads the MemoryStream out of the queue, reads it via a BinaryReader like ReadInt32(), etc. and thereby decodes the data. Every now and then however when it reads the data, the data it reads from it is incorrect, e.g. a negative integer number which the sender never would encode. However, as mentioned before, the decoding only fails in one of the receiver applications, in the other ones the datagram decodes fine. Now you might be saying, well, probably the UDP datagram has a byte corruption or something but I've logged every single datagram that's coming in and compared them on all receivers and the datagrams every application receives are absolutely identical. Now it gets even weirder, when I dump the datagram that failed to decode to disk and write a unit test that reads it and runs it through the decoder, it decodes just fine. Also when I wrap a try/catch around the decoder, reset the MemoryStream position in the catch and run it through the decoder again, it decodes just fine. To make it even weirder, this also only happens when I bind both sockets to read data from the sender, if I only bind one, it doesn't happen or at least I wasn't able to reproduce it. Here are is some corresponding code to what's going on: This is the receive callback for the socket: private void ReceiveCompleted(object sender, SocketAsyncEventArgs args) { if (args.SocketError != SocketError.Success) { InternalShutdown(args.SocketError); return; } if (args.BytesTransferred > SequencedUnitHeader.UNIT_HEADER_SIZE) { DataChunk chunk = new DataChunk(args.BytesTransferred); Buffer.BlockCopy(args.Buffer, 0, chunk.Buffer, 0, args.BytesTransferred); chunk.MemoryStream = new MemoryStream(chunk.Buffer); chunk.BinaryReader = new BinaryReader(chunk.MemoryStream); chunk.SequencedUnitHeader.SequenceID = chunk.BinaryReader.ReadUInt32(); chunk.SequencedUnitHeader.Count = chunk.BinaryReader.ReadByte(); if (prevSequenceID + 1 != chunk.SequencedUnitHeader.SequenceID) { log.Error("UdpDatagramGap\tName:{0}\tExpected:{1}\tReceived:{2}", unitName, prevSequenceID + 1, chunk.SequencedUnitHeader.SequenceID); } else if (chunk.SequencedUnitHeader.SequenceID < prevSequenceID) { log.Error("UdpOutOfSequence\tName:{0}\tExpected:{1}\tReceived:{2}", unitName, prevSequenceID + 1, chunk.SequencedUnitHeader.SequenceID); } prevSequenceID = chunk.SequencedUnitHeader.SequenceID; messagePump.Produce(chunk); } else UdpStatistics.FramesRxDiscarded++; Socket.InvokeAsyncMethod(Socket.ReceiveAsync, ReceiveCompleted, asyncReceiveArgs); } Here's some stub code that decodes the data: public static void OnDataChunk(DataChunk dataChunk) { try { for (int i = 0; i < dataChunk.SequencedUnitHeader.Count; i++) { int val = dataChunk.BinaryReader.ReadInt32(); if(val < 0) throw new Exception("EncodingException"); // do something with that value } } catch (Exception ex) { writer.WriteLine("ID:" + dataChunk.SequencedUnitHeader.SequenceID + " Count:" + dataChunk.SequencedUnitHeader.Count + " " + BitConverter.ToString(dataChunk.Buffer, 0, dataChunk.Size)); writer.Flush(); log.ErrorException("OnDataChunk", ex); log.Info("RETRY FRAME:{0} Data:{1}", dataChunk.SequencedUnitHeader.SequenceID, BitConverter.ToString(dataChunk.Buffer, 0, dataChunk.Size)); dataChunk.MemoryStream.Position = 0; dataChunk.SequencedUnitHeader.SequenceID = dataChunk.BinaryReader.ReadUInt32(); dataChunk.SequencedUnitHeader.Count = dataChunk.BinaryReader.ReadByte(); OnDataChunk(dataChunk); } } You see in the catch{} part I simply reset the MemoryStream.Position to 0 and call the same method again and it works just fine that next time? I'm really out of ideas at this point and unfortunately had no DUH moment writing this. Anybody have any kind of idea what might be going on or what else I could do to troubleshoot this? Thanks, Tom

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  • Good Book for Learning Meteor: Discover Meteor

    - by Stephen.Walther
    A week or so ago, Sacha Greif asked me whether I would be willing to write a review of his new book on Meteor (published today) entitled Discover Meteor. Sacha wrote the book with Tom Coleman. Both Sacha and Tom are very active in the Meteor community – they are responsible for several well-known Meteor packages and projects including Atmosphere, Meteorite, meteor-router and Telescope — so I suspected that their book would be good. If you have not heard of Meteor, Meteor is a new framework for building web applications which is built on top of Node.js. Meteor excels at building a new category of constantly-connected, real-time web applications. It has some jaw-dropping features which I described in a previous blog entry: http://stephenwalther.com/archive/2013/03/18/an-introduction-to-meteor.aspx So, I am super excited about Meteor. Unfortunately, because it is evolving so quickly, learning how to write Meteor applications can be challenging. The official documentation at Meteor.com is good, but it is too basic. I’m happy to report that Discovering Meteor is a really good book: · The book is a fun read. The writing is smooth and I read through the book from cover to cover in a single Saturday afternoon with pleasure. · The book is well organized. It contains a walk-through of building a social media app (Microscope). Interleaved through the app building chapters, it contains tutorial chapters on Meteor features such as deployment and reactivity. · The book covers several advanced topics which I have not seen covered anywhere else. The chapters on publications and subscriptions, routing, and animation are especially good. I came away from the book with a deeper understanding of all of these topics. I wish that I had read Discover Meteor a couple of months ago and it would have saved me several weeks of reading Stack Overflow posts and struggling with the Meteor documentation If you want to buy Discover Meteor, the authors gave me the following link which provides you with a 20% discount: http://discovermeteor.com/orionids

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  • ArchBeat Link-o-Rama for 2012-03-16

    - by Bob Rhubart
    Applications Architecture | Roy Hunter and Brian Rasmussen www.oracle.com Roy Hunter and Brian Rasmussen examine the strategies three organizations applied to modernize their application architectures. Part of the Oracle Experiences in Enterprise Architecture article series. Public Sector Architecture | Jeremy Foreman and Hamza Jahangir www.oracle.com Jeremy Foreman and Hamza Jahangir examine the strategies used by two different organizations in deploying their respective future-state architectures. Part of the Oracle Experiences in Enterprise Architecture article series. XMLA vs BAPI | Sunil S. Ranka sranka.wordpress.com Oracle ACE Sunil Ranka's brief primer on the XMLA and BAPI standards. The Java EE 6 Example - Running Galleria on WebLogic 12 - Part 3 | Markus Eisele blog.eisele.net Oracle ACE Director Markus Eisele continues his series on working with Galleria. Oracle Linux Online Forum - March 27 event.on24.com Date: Tuesday, March 27, 2012 Time: 9:30 AM PT / 12:30 PM ET Hosts: Oracle Executives Edward Screven and Wim Coekaerts. Customer Presentation: How Oracle Helps Reduce Cost and Improve Performance of Database Applications at Progressive Insurance Speaker: John Dome What's New in Oracle Linux Speakers: Waseem Daher, Chris Mason, Elena Zannoni, Lenz Grimmer Get More Value from your Linux Vendor Speakers: Sergio Leunissen, Chris Mason, Monica Kumar JavaOne 2012 Call for Papers www.oracle.com Don't keep all that Java skill locked up in your overstuffed cranium. Submit your proposal for that killer paper now to share your experience at this year’s JavaOne. Running applications in the cloud are not designed for the cloud | Tom Laszewski blogs.oracle.com "The issue you face with moving client/server applications to the cloud via rehosting is 'where will the applications run?'" says Tom Laszewski. GlassFish 3.1.2 - Which Platform(s)? | The Aquarium blogs.oracle.com The Aquarium shares a list of GlassFish 3.1.2-supported operating systems and JVMs. IT Strategies from Oracle; Three Recipes for Oracle Service Bus 11g ; Stir Up Some SOA www.oracle.com Featured this week on the OTN Architect Portal, along with the latest events, product downloads, community social resources, articles on hot topics, and a whole lot more. Thought for the Day "No matter what the problem is, it's always a people problem." — Gerald M. Weinberg

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  • links for 2010-05-10

    - by Bob Rhubart
    Announcing the MOS WCI "Community" (World of WebCenter Interaction) In this community you'll find a product related discussion forum moderated by Oracle WebCenter Interaction support engineers, recommended tips and tricks, links to knowledge base articles and best practices for setting up and administering up your environment. We hope you'll take a minute to have a look through the community. (tags: oracle otn webcenter enterprise2.0) Jason Williamson: Tuxedo Runtime for CICS and Batch Webcast "The notion that mainframes can be rehosted on open system is pretty well accepted. There are still some hold out CxO's who don't believe it, but those guys typically are not really looking to migrate anyway and don't take an honest look at the case studies, history and TPC reports." Jason Williamson (tags: oracle otn entarch tuxedo) Tom Hofte: Analyzing Out-Of-Memory issues in WebLogic 10.3.3 with JRockit 4.0 Flight Recorder Tom Hofte shows you "how to capture automatically an overall WLS system image, including a JFR image, after an out-of-memory (OOM) exception has occured in the JVM hosting WLS 10.3.3." (tags: oracle otn weblogic soa java) Install Control Center Agent on Oracle Application Server (Oracle Warehouse Builder (OWB) Weblog) Qianqian Wu show you how to Install and Configure the Application Server; Deploy the Control Center Agent to the Application Server; Optional Configuration Tasks (tags: oracle otn bi datawarehousing) Frank Buytendijk: BI and EPM Landscape "Organizations are getting more serious about ecosystem thinking. They do not evaluate single tools anymore for different application areas, but buy into a complete ecosystem of hardware, software and services. The best ecosystem is the one that offers the most options, in environments where the uncertainty is high and investments are hard to reverse. The key to successfully managing such an environment is middleware, and BI and EPM become increasingly middleware intensive. In fact, given the horizontal nature of BI and EPM, sitting on top of all business functions and applications, you could call them 'upperware.'" -- Frank Buytendijk (tags: oracle otn enterprisearchitecture bi)

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