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• Convert a PDF eBook to ePub Format

  - by Matthew Guay

  Would you like to read a PDF eBook on an eReader or mobile device, but aren’t happy with the performance? Here’s how you can convert your PDFs to the popular ePub format so you can easily read them on any device. PDFs are a popular format for eBooks since they render the same on any device and can preserve the exact layout of the print book.  However, this benefit is their major disadvantage on mobile devices, as you often have to zoom and pan back and forth to see everything on the page.  ePub files, on the other hand, are an increasingly popular option. They can reflow to fill your screen instead of sticking to a strict layout style.  With the free Calibre program, you can quickly convert your PDF eBooks to ePub format. Getting Started Download the Calibre installer (link below) for your operating system, and install as normal.  Calibre works on recent versions of Windows, OS X, and Linux.  The Calibre installer is very streamlined, so the install process was quite quick. Calibre is a great application for organizing your eBooks.  It can automatically sort your books by their metadata, and even display their covers in a Coverflow-style viewer. To add an eBook to your library, simply drag-and-drop the file into the Calibre window, or click Add books at the top.  Here you can choose to add all the books from a folder and more. Calibre will then add the book(s) to your library, import the associated metadata, and organize them in the catalog. Convert your Books Once you’ve imported your books into Calibre, it’s time to convert them to the format you want.  Select the book or books you want to convert, and click Convert E-books.  Select whether you want to convert them individually or bulk convert them. The convertor window has lots of options, so you can get your ePub book exactly like you want.  You can simply click Ok and go with the defaults, or you can tweak the settings. Do note that the conversion will only work successfully with PDFs that contain actual text.  Some PDFs are actually images scanned in from the original books; these will appear just like the PDF after the conversion, and won’t be any easier to read. On the first tab, you’ll notice that Calibri will repopulate most of the metadata fields with info from your PDF.  It will also use the first page of the PDF as the cover.  Edit any of the information that may be incorrect, and add any additional information you want associated with the book. If you want to convert your eBook to a different format other than ePub, Calibri’s got you covered, too.  On the top right, you can choose to output the converted eBook into a many different file formats, including the Kindle-friendly MOBI format. One other important settings page is the Structure Detection tab.  Here you can choose to have it remove headers and footers in the converted book, as well as automatically detect chapter breaks. Click Ok when you’ve finished choosing your settings and Calibre will convert the book.  This may take a few minutes, depending on the size of the PDF.  If the conversion seems to be taking too long, you can click Show job details for more information on the progress.   The conversion usually works good, but we did have one job freeze on us.  When we checked the job details, it indicated that the PDF was copy-protected.  Most PDF eBooks, however, worked fine. Now, back in the main Calibri window, select your book and save it to disk.  You can choose to save only the EPUB format, or you can select Save to disk to save all formats of the book to your computer. You can also view the ePub file directly in Calibri’s built-in eBook viewer.  This is the PDF book we converted, and it looks fairly good in the converted format.  It does have some odd line breaks and some misplaced numbers, but on the whole, the converted book is much easier to read, especially on small mobile devices.   Even images get included inline, so you shouldn’t be missing anything from the original eBook. Conclusion Calibri makes it simple to read your eBooks in any format you need. It is a project that is in constant development, and updates regularly adding better stability and features.  Whether you want to ready your PDF eBooks on a Sony Reader, Kindle, netbook or Smartphone, your books will now be more accessible than ever.  And with thousands of free PDF eBooks out there, you’ll be sure to always have something to read. If you’d like some Geeky PDF eBooks, Microsoft Press is offering a number of free PDF eBooks right now.  Check them out at this link (Account Required). Download the Calibre eBook program Similar Articles Productive Geek Tips Format a String as Currency in C#Convert Older Excel Documents to Excel 2007 FormatShare OneNote 2010 Notebooks with OneNote 2007Install an RPM Package on Ubuntu LinuxConvert PDF Files to Word Documents and Other Formats TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Nice Websites To Watch TV Shows Online 24 Million Sites Windows Media Player Glass Icons (icons we like) How to Forecast Weather, without Gadgets Outlook Tools, one stop tweaking for any Outlook version Zoofs, find the most popular tweeted YouTube videos

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• Why does setting a geometry shader cause my sprites to vanish?

  - by ChaosDev

  My application has multiple screens with different tasks. Once I set a geometry shader to the device context for my custom terrain, it works and I get the desired results. But then when I get back to the main menu, all sprites and text disappear. These sprites don't dissappear when I use pixel and vertex shaders. The sprites are being drawn through D3D11, of course, with specified view and projection matrices as well an input layout, vertex, and pixel shader. I'm trying DeviceContext->ClearState() but it does not help. Any ideas? void gGeometry::DrawIndexedWithCustomEffect(gVertexShader*vs,gPixelShader* ps,gGeometryShader* gs=nullptr) { unsigned int offset = 0; auto context = mp_D3D->mp_Context; //set topology context->IASetPrimitiveTopology(m_Topology); //set input layout context->IASetInputLayout(mp_inputLayout); //set vertex and index buffers context->IASetVertexBuffers(0,1,&mp_VertexBuffer->mp_Buffer,&m_VertexStride,&offset); context->IASetIndexBuffer(mp_IndexBuffer->mp_Buffer,mp_IndexBuffer->m_DXGIFormat,0); //send constant buffers to shaders context->VSSetConstantBuffers(0,vs->m_CBufferCount,vs->m_CRawBuffers.data()); context->PSSetConstantBuffers(0,ps->m_CBufferCount,ps->m_CRawBuffers.data()); if(gs!=nullptr) { context->GSSetConstantBuffers(0,gs->m_CBufferCount,gs->m_CRawBuffers.data()); context->GSSetShader(gs->mp_D3DGeomShader,0,0);//after this call all sprites disappear } //set shaders context->VSSetShader( vs->mp_D3DVertexShader, 0, 0 ); context->PSSetShader( ps->mp_D3DPixelShader, 0, 0 ); //draw context->DrawIndexed(m_indexCount,0,0); } //sprites void gSpriteDrawer::Draw(gTexture2D* texture,const RECT& dest,const RECT& source, const Matrix& spriteMatrix,const float& rotation,Vector2d& position,const Vector2d& origin,const Color& color) { VertexPositionColorTexture* verticesPtr; D3D11_MAPPED_SUBRESOURCE mappedResource; unsigned int TriangleVertexStride = sizeof(VertexPositionColorTexture); unsigned int offset = 0; float halfWidth = ( float )dest.right / 2.0f; float halfHeight = ( float )dest.bottom / 2.0f; float z = 0.1f; int w = texture->Width(); int h = texture->Height(); float tu = (float)source.right/(w); float tv = (float)source.bottom/(h); float hu = (float)source.left/(w); float hv = (float)source.top/(h); Vector2d t0 = Vector2d( hu+tu, hv); Vector2d t1 = Vector2d( hu+tu, hv+tv); Vector2d t2 = Vector2d( hu, hv+tv); Vector2d t3 = Vector2d( hu, hv+tv); Vector2d t4 = Vector2d( hu, hv); Vector2d t5 = Vector2d( hu+tu, hv); float ex=(dest.right/2)+(origin.x); float ey=(dest.bottom/2)+(origin.y); Vector4d v4Color = Vector4d(color.r,color.g,color.b,color.a); VertexPositionColorTexture vertices[] = { { Vector3d( dest.right-ex, -ey, z),v4Color, t0}, { Vector3d( dest.right-ex, dest.bottom-ey , z),v4Color, t1}, { Vector3d( -ex, dest.bottom-ey , z),v4Color, t2}, { Vector3d( -ex, dest.bottom-ey , z),v4Color, t3}, { Vector3d( -ex, -ey , z),v4Color, t4}, { Vector3d( dest.right-ex, -ey , z),v4Color, t5}, }; auto mp_context = mp_D3D->mp_Context; // Lock the vertex buffer so it can be written to. mp_context->Map(mp_vertexBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource); // Get a pointer to the data in the vertex buffer. verticesPtr = (VertexPositionColorTexture*)mappedResource.pData; // Copy the data into the vertex buffer. memcpy(verticesPtr, (void*)vertices, (sizeof(VertexPositionColorTexture) * 6)); // Unlock the vertex buffer. mp_context->Unmap(mp_vertexBuffer, 0); //set vertex shader mp_context->IASetVertexBuffers( 0, 1, &mp_vertexBuffer, &TriangleVertexStride, &offset); //set texture mp_context->PSSetShaderResources( 0, 1, &texture->mp_SRV); //set matrix to shader mp_context->UpdateSubresource(mp_matrixBuffer, 0, 0, &spriteMatrix, 0, 0 ); mp_context->VSSetConstantBuffers( 0, 1, &mp_matrixBuffer); //draw sprite mp_context->Draw( 6, 0 ); }

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• Learning language is enough to create average applications ?

  - by Freshblood

  Many books teach a programming language. However, knowing a specific language is not the same as knowning application or GUI design nor project layout. So, attempting to make an average application fails after learning a language. It is clear that knowing a language is not enough to make an application. If you agree with what I have said, why doesn't anyone mention this instead of teaching pure language syntax and features? Why books don't mention how to make a better application ?

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• Metro: Introduction to the WinJS ListView Control

  - by Stephen.Walther

  The goal of this blog entry is to provide a quick introduction to the ListView control – just the bare minimum that you need to know to start using the control. When building Metro style applications using JavaScript, the ListView control is the primary control that you use for displaying lists of items. For example, if you are building a product catalog app, then you can use the ListView control to display the list of products. The ListView control supports several advanced features that I plan to discuss in future blog entries. For example, you can group the items in a ListView, you can create master/details views with a ListView, and you can efficiently work with large sets of items with a ListView. In this blog entry, we’ll keep things simple and focus on displaying a list of products. There are three things that you need to do in order to display a list of items with a ListView: Create a data source Create an Item Template Declare the ListView Creating the ListView Data Source The first step is to create (or retrieve) the data that you want to display with the ListView. In most scenarios, you will want to bind a ListView to a WinJS.Binding.List object. The nice thing about the WinJS.Binding.List object is that it enables you to take a standard JavaScript array and convert the array into something that can be bound to the ListView. It doesn’t matter where the JavaScript array comes from. It could be a static array that you declare or you could retrieve the array as the result of an Ajax call to a remote server. The following JavaScript file – named products.js – contains a list of products which can be bound to a ListView. (function () { "use strict"; var products = new WinJS.Binding.List([ { name: "Milk", price: 2.44 }, { name: "Oranges", price: 1.99 }, { name: "Wine", price: 8.55 }, { name: "Apples", price: 2.44 }, { name: "Steak", price: 1.99 }, { name: "Eggs", price: 2.44 }, { name: "Mushrooms", price: 1.99 }, { name: "Yogurt", price: 2.44 }, { name: "Soup", price: 1.99 }, { name: "Cereal", price: 2.44 }, { name: "Pepsi", price: 1.99 } ]); WinJS.Namespace.define("ListViewDemos", { products: products }); })(); The products variable represents a WinJS.Binding.List object. This object is initialized with a plain-old JavaScript array which represents an array of products. To avoid polluting the global namespace, the code above uses the module pattern and exposes the products using a namespace. The list of products is exposed to the world as ListViewDemos.products. To learn more about the module pattern and namespaces in WinJS, see my earlier blog entry: http://stephenwalther.com/blog/archive/2012/02/22/metro-namespaces-and-modules.aspx Creating the ListView Item Template The ListView control does not know how to render anything. It doesn’t know how you want each list item to appear. To get the ListView control to render something useful, you must create an Item Template. Here’s what our template for rendering an individual product looks like: <div id="productTemplate" data-win-control="WinJS.Binding.Template"> <div class="product"> <span data-win-bind="innerText:name"></span> <span data-win-bind="innerText:price"></span> </div> </div> This template displays the product name and price from the data source. Normally, you will declare your template in the same file as you declare the ListView control. In our case, both the template and ListView are declared in the default.html file. To learn more about templates, see my earlier blog entry: http://stephenwalther.com/blog/archive/2012/02/27/metro-using-templates.aspx Declaring the ListView The final step is to declare the ListView control in a page. Here’s the markup for declaring a ListView: <div data-win-control="WinJS.UI.ListView" data-win-options="{ itemDataSource:ListViewDemos.products.dataSource, itemTemplate:select('#productTemplate') }"> </div> You declare a ListView by adding the data-win-control to an HTML DIV tag. The data-win-options attribute is used to set two properties of the ListView. The ListView is associated with its data source with the itemDataSource property. Notice that the data source is ListViewDemos.products.dataSource and not just ListViewDemos.products. You need to associate the ListView with the dataSoure property. The ListView is associated with its item template with the help of the itemTemplate property. The ID of the item template — #productTemplate – is used to select the template from the page. Here’s what the complete version of the default.html page looks like: <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>ListViewDemos</title> <!-- WinJS references --> <link href="//Microsoft.WinJS.0.6/css/ui-dark.css" rel="stylesheet"> <script src="//Microsoft.WinJS.0.6/js/base.js"></script> <script src="//Microsoft.WinJS.0.6/js/ui.js"></script> <!-- ListViewDemos references --> <link href="/css/default.css" rel="stylesheet"> <script src="/js/default.js"></script> <script src="/js/products.js" type="text/javascript"></script> <style type="text/css"> .product { width: 200px; height: 100px; border: white solid 1px; } </style> </head> <body> <div id="productTemplate" data-win-control="WinJS.Binding.Template"> <div class="product"> <span data-win-bind="innerText:name"></span> <span data-win-bind="innerText:price"></span> </div> </div> <div data-win-control="WinJS.UI.ListView" data-win-options="{ itemDataSource:ListViewDemos.products.dataSource, itemTemplate:select('#productTemplate') }"> </div> </body> </html> Notice that the page above includes a reference to the products.js file: <script src=”/js/products.js” type=”text/javascript”></script> The page above also contains a Template control which contains the ListView item template. Finally, the page includes the declaration of the ListView control. Summary The goal of this blog entry was to describe the minimal set of steps which you must complete to use the WinJS ListView control to display a simple list of items. You learned how to create a data source, declare an item template, and declare a ListView control.

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• Slide Creation Checklist

  - by Daniel Moth

  PowerPoint is a great tool for conference (large audience) presentations, which is the context for the advice below. The #1 thing to keep in mind when you create slides (at least for conference sessions), is that they are there to help you remember what you were going to say (the flow and key messages) and for the audience to get a visual reminder of the key points. Slides are not there for the audience to read what you are going to say anyway. If they were, what is the point of you being there? Slides are not holders for complete sentences (unless you are quoting) – use Microsoft Word for that purpose either as a physical handout or as a URL link that you share with the audience. When you dry run your presentation, if you find yourself reading the bullets on your slide, you have missed the point. You have a message to deliver that can be done regardless of your slides – remember that. The focus of your audience should be on you, not the screen. Based on that premise, I have created a checklist that I go over before I start a new deck and also once I think my slides are ready. Turn AutoFit OFF. I cannot stress this enough. For each slide, explicitly pick a slide layout. In my presentations, I only use one Title Slide, Section Header per demo slide, and for the rest of my slides one of the three: Title and Content, Title Only, Blank. Most people that are newbies to PowerPoint, get whatever default layout the New Slide creates for them and then start deleting and adding placeholders to that. You can do better than that (and you'll be glad you did if you also follow item #11 below). Every slide must have an image. Remove all punctuation (e.g. periods, commas) other than exclamation points and question marks (! ?). Don't use color or other formatting (e.g. italics, bold) for text on the slide. Check your animations. Avoid animations that hide elements that were on the slide (instead use a new slide and transition). Ensure that animations that bring new elements in, bring them into white space instead of over other existing elements. A good test is to print the slide and see that it still makes sense even without the animation. Print the deck in black and white choosing the "6 slides per page" option. Can I still read each slide without losing any information? If the answer is "no", go back and fix the slides so the answer becomes "yes". Don't have more than 3 bullet levels/indents. In other words: you type some text on the slide, hit 'Enter', hit 'Tab', type some more text and repeat at most one final time that sequence. Ideally your outer bullets have only level of sub-bullets (i.e. one level of indentation beneath them). Don't have more than 3-5 outer bullets per slide. Space them evenly horizontally, e.g. with blank lines in between. Don't wrap. For each bullet on all slides check: does the text for that bullet wrap to a second line? If it does, change the wording so it doesn't. Or create a terser bullet and make the original long text a sub-bullet of that one (thus decreasing the font size, but still being consistent) and have no wrapping. Use the same consistent fonts (i.e. Font Face, Font Size etc) throughout the deck for each level of bullet. In other words, don't deviate form the PowerPoint template you chose (or that was chosen for you). Go on each slide and hit 'Reset'. 'Reset' is a button on the 'Home' tab of the ribbon or you can find the 'Reset Slide' menu when you right click on a slide on the left 'Slides' list. If your slides can survive doing that without you "fixing" things after the Reset action, you are golden! For each slide ask yourself: if I had to replace this slide with a single sentence that conveys the key message, what would that sentence be? This exercise leads you to merge slides (where the key message is split) or split a slide into many, if there were too many key messages on the slide in the first place. It can also lead you to redesign a slide so the text on it really is just explanation or evidence for the key message you are trying to convey. Get the length right. Is the length of this deck suitable for the time you have been given to present? If not, cut content! It is far better to deliver less in a relaxed, polished engaging, memorable way than to deliver in great haste more content. As a rule of thumb, multiply 2 minutes by the number of slides you have, add the time you need for each demo and check if that add to more than the time you have allotted. If it does, start cutting content – we've all been there and it has to be done. As always, rules and guidelines are there to be bent and even broken some times. Start with the above and on a slide-by-slide basis decide which rules you want to bend. That is smarter than throwing all the rules out from the start, right? Comments about this post welcome at the original blog.

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• Lock statement vs Monitor.Enter method.

  - by Vokinneberg

  I suppose it is an interesting code example. We have a class, let's call it Test with Finalize method. In Main method here is two code blocks where i am using lock statement and Monitor.Enter call. Also i have two instances of class Test here. The experiment is pretty simple - nulling Test variable within locking block and try to collect it manually with GC.Collect method call. So, to see the Finilaze call i am calling GC.WaitForPendingFinalizers method. Everything is very simple as you can see. By defenition of lock statement it's opens by compiler to try{...}finally{..} block with Minitor.Enter call inside of try block and Monitor.Exit in finally block. I've tryed to implement try-finally block manually. I've expected the same behaviour in both cases. in case of using lock and in case of unsing Monitor.Enter. But, surprize, surprize - it is different as you can see below. public class Test : IDisposable { private string name; public Test(string name) { this.name = name; } ~Test() { Console.WriteLine(string.Format("Finalizing class name {0}.", name)); } } class Program { static void Main(string[] args) { var test1 = new Test("Test1"); var test2 = new Test("Tesst2"); lock (test1) { test1 = null; Console.WriteLine("Manual collect 1."); GC.Collect(); GC.WaitForPendingFinalizers(); Console.WriteLine("Manual collect 2."); GC.Collect(); } var lockTaken = false; System.Threading.Monitor.Enter(test2, ref lockTaken); try { test2 = null; Console.WriteLine("Manual collect 3."); GC.Collect(); GC.WaitForPendingFinalizers(); Console.WriteLine("Manual collect 4."); GC.Collect(); } finally { System.Threading.Monitor.Exit(test2); } Console.ReadLine(); } } Output of this example is Manual collect 1. Manual collect 2. Manual collect 3. Finalizing class name Test2. Manual collect 4. And null reference exception in last finally block because test2 is null reference. I've was surprised and disasembly my code into IL. So, here is IL dump of Main method. .entrypoint .maxstack 2 .locals init ( [0] class ConsoleApplication2.Test test1, [1] class ConsoleApplication2.Test test2, [2] bool lockTaken, [3] bool <>s__LockTaken0, [4] class ConsoleApplication2.Test CS$2$0000, [5] bool CS$4$0001) L_0000: nop L_0001: ldstr "Test1" L_0006: newobj instance void ConsoleApplication2.Test::.ctor(string) L_000b: stloc.0 L_000c: ldstr "Tesst2" L_0011: newobj instance void ConsoleApplication2.Test::.ctor(string) L_0016: stloc.1 L_0017: ldc.i4.0 L_0018: stloc.3 L_0019: ldloc.0 L_001a: dup L_001b: stloc.s CS$2$0000 L_001d: ldloca.s <>s__LockTaken0 L_001f: call void [mscorlib]System.Threading.Monitor::Enter(object, bool&) L_0024: nop L_0025: nop L_0026: ldnull L_0027: stloc.0 L_0028: ldstr "Manual collect." L_002d: call void [mscorlib]System.Console::WriteLine(string) L_0032: nop L_0033: call void [mscorlib]System.GC::Collect() L_0038: nop L_0039: call void [mscorlib]System.GC::WaitForPendingFinalizers() L_003e: nop L_003f: ldstr "Manual collect." L_0044: call void [mscorlib]System.Console::WriteLine(string) L_0049: nop L_004a: call void [mscorlib]System.GC::Collect() L_004f: nop L_0050: nop L_0051: leave.s L_0066 L_0053: ldloc.3 L_0054: ldc.i4.0 L_0055: ceq L_0057: stloc.s CS$4$0001 L_0059: ldloc.s CS$4$0001 L_005b: brtrue.s L_0065 L_005d: ldloc.s CS$2$0000 L_005f: call void [mscorlib]System.Threading.Monitor::Exit(object) L_0064: nop L_0065: endfinally L_0066: nop L_0067: ldc.i4.0 L_0068: stloc.2 L_0069: ldloc.1 L_006a: ldloca.s lockTaken L_006c: call void [mscorlib]System.Threading.Monitor::Enter(object, bool&) L_0071: nop L_0072: nop L_0073: ldnull L_0074: stloc.1 L_0075: ldstr "Manual collect." L_007a: call void [mscorlib]System.Console::WriteLine(string) L_007f: nop L_0080: call void [mscorlib]System.GC::Collect() L_0085: nop L_0086: call void [mscorlib]System.GC::WaitForPendingFinalizers() L_008b: nop L_008c: ldstr "Manual collect." L_0091: call void [mscorlib]System.Console::WriteLine(string) L_0096: nop L_0097: call void [mscorlib]System.GC::Collect() L_009c: nop L_009d: nop L_009e: leave.s L_00aa L_00a0: nop L_00a1: ldloc.1 L_00a2: call void [mscorlib]System.Threading.Monitor::Exit(object) L_00a7: nop L_00a8: nop L_00a9: endfinally L_00aa: nop L_00ab: call string [mscorlib]System.Console::ReadLine() L_00b0: pop L_00b1: ret .try L_0019 to L_0053 finally handler L_0053 to L_0066 .try L_0072 to L_00a0 finally handler L_00a0 to L_00aa I does not see any difference between lock statement and Monitor.Enter call. So, why i steel have a reference to the instance of test1 in case of lock, and object is not collected by GC, but in case of using Monitor.Enter it is collected and finilized?

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• Oracle’s Web Experience Management

  - by Christie Flanagan

  Today’s guest post on Oracle’s Web Experience Management comes from a member of our WebCenter Evangelist team, Noël Jaffré, a Principal Technologist based in France.Oracle’s Web Experience Management (WEM) solution enables organizations to optimize the online channel for driving marketing and customer experience management success. It empowers business users to manage the web presence and create rich and engaging online experiences for customers and prospects. Oracle's WEM platform provides a framework to simplify the integration of Oracle, third-party and custom-built applications. This framework essentially allows the creation and integration of applications using one single business interface called the WEM interface. It includes the following: Single sign-on access control for all integrated applications using the Central Authentication Service (CAS) component. A single centralized administration window for user, role, and native applications management including site management. Community server management, gadget server management as well as management for partner integrated technologies. A Representational State Transfer (REST) API for accessing WebCenter Sites data. REST services are supported on both Oracle WebCenter Sites and Oracle WebCenter Sites Satellite Server to leverage the satellite server cache. All REST requests are cached for web consuming applications as well for the high performance delivery of native applications on the mobile channel. Oracle WebCenter Sites’ Web Experience Management environment enables organizations to deliver a compelling online experience to customers by simplifying the deployment and management of sophisticated and engaging websites. The WebCenter Sites platform automates the entire process of managing web content including: Authoring:  Business users can easily contribute and manage web content in real-time, with intuitive interfaces and drag-and-drop content authoring and layout capabilities designed for the non-technical user. Contextual Content Targeting: Marketers are empowered to create and manage targeted campaigns with relevant recommendations and promotions based on the context of the session of the visitor such as his or her navigation history, user profile, language, location or other information shared during the visitor session. Content Publishing and Deployment: It offers advanced multi-site management capabilities for departmental or regional sites, as well as strong multi-lingual and multi-locale content management. The remote satellite server caching infrastructure provides high-performance, distributed caching, tuned to deliver high-volume, targeted and multi-lingual sites. Analytics and Optimization: Business users and marketers have the ability to measure the effectiveness of their online content and campaigns at a granular level. Editors and marketers can immediately determine whether a given article or promotion is relevant to a particular customer segment. User-generated Content: Marketers can enable blogs, comments, rating and reviews on the website.  All comments and reviews posted to the website can be moderated from the administrator interface either manually or automatically using filters, whitelists, blacklists or community based moderation. Personalized Gadget Dashboards:  Site managers can deploy gadgets, small applications using web content, individually or as part of dashboards containing multiple gadgets.  These gadget dashboards enable site visitors to create their own “MyPage” on a given site where they can select and customize the gadgets that the site administrator has made available.  Any gadget that conforms to the iGoogle/OpenSocial standard can be made available to site visitors, or they can be created within the WEM interface. Oracle's WEM platform also provides a unique environment for the delivery of a rich, multichannel online experience for site visitors through its advanced management modules for mobile. With Oracle’s WEM solution, it’s easy to control branding and deliver a consistent message while repurposing web content for publication to mobile devices, kiosks and much more. This distinctive approach provides: HTML5 Delivery: HTML5 delivery which includes native support for adaptive design that responds to the user’s computer screen resolution and orientation. The approach is less driven by the particular hardware and more driven by the user’s interactions with the device. In other words, this approach takes both the screen interactions (either cursor or touch) and screen sizes and orientation into consideration. A Unique Native Mobile Extension Environment for Contributors: From the WEM interface, a contributor can directly manage their mobile channel, using the tooling already in place for driving the traditional web presence. This includes the mobile presentation, as well as mobile insite editing, drag and drop page layout, and in-context recommendations and personalization. Optimized REST APIs for High Performance Content Delivery on Native Mobile Device Applications: WebCenter Sites’ REST API uses the underlying HTTP methods (GET, POST, PUT, DELETE) to interact with resources. Resources support two types of input and output formats -- XML and JSON. REST calls are customizable to optimize the interactions between the content repositories and the client applications. Caching is essential to decrease network loads and improve overall reliability and usability of the applications and user interactions. REST results are cached through the highly efficient Oracle WebCenter Sites caching architecture.

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• Tuesday + 3 = Friday? C++ Programming Problem

  - by lampshade

  Looking at the main function, we can see that I've Hard Coded the "Monday" into my setDay public function. It is easy to grab a day of the week from the user using a c-string (as I did in setDay), but how would I ask the user to add n to the day that is set, "Monday" and come up with "Thursday"? It is hard because typdef enum { INVALID, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY} doesn't interpret 9 is 0 and/or 10 as 1. #include <iostream> using std::cout; using std::endl; class DayOfTheWeek //class is encapsulation of functions and members that manipulate the data. { public: DayOfTheWeek(); // Constructor virtual ~DayOfTheWeek(); // Destructor void setDay(const char * day); // Function to set the day void printDay() const; // Function to Print the day. const char * getDay() const; // Function to get the day. const char * plusOneDay(); // Next day function const char * minusOneDay(); // Previous day function const char * addDays(int addValue); // function that adds days based on parameter value private: char * day; // variable for the days of the week. }; DayOfTheWeek::DayOfTheWeek() : day(0) { // Usually I would allocate pointer member variables // Here in the construction of the Object } const char * DayOfTheWeek::getDay() const { return day; // we can get the day simply by returning it. } const char * DayOfTheWeek::minusOneDay() { if ( strcmp( day, "Monday" ) == 0) { cout << "The day before " << day << " is "; return "Sunday"; } else if ( strcmp( day, "Tuesday" ) == 0 ) { cout << "The day before " << day << " is "; return "Monday"; } else if ( strcmp( day, "Wednesday" ) == 0 ) { cout << "The day before " << day << " is "; return "Tuesday"; } else if ( strcmp( day, "Thursday" ) == 0 ) { cout << "The day before " << day << " is "; return "Wednesday"; } else if ( strcmp( day, "Friday" ) == 0 ) { cout << "The day before " << day << " is "; return "Thursday"; } else if ( strcmp( day, "Saturday" ) == 0 ) { cout << "The day before " << day << " is "; return "Friday"; } else if ( strcmp( day, "Sunday" ) == 0 ) { cout << "The day before " << day << " is "; return "Saturday"; } else { cout << "'" << day << "'"; return "is an invalid day of the week!"; } } const char * DayOfTheWeek::plusOneDay() { if ( strcmp( day, "Monday" ) == 0) { cout << "The day after " << day << " is "; return "Tuesday"; } else if ( strcmp( day, "Tuesday" ) == 0 ) { cout << "The day after " << day << " is "; return "Wednesday"; } else if ( strcmp( day, "Wednesday" ) == 0 ) { cout << "The day after " << day << " is "; return "Thursday"; } else if ( strcmp( day, "Thursday" ) == 0 ) { cout << "The day after " << day << " is "; return "Friday"; } else if ( strcmp( day, "Friday" ) == 0 ) { cout << "The day after " << day << " is "; return "Saturday"; } else if ( strcmp( day, "Saturday" ) == 0 ) { cout << "The day after " << day << " is "; return "Sunday"; } else if ( strcmp( day, "Sunday" ) == 0 ) { cout << "The day after " << day << " is "; return "Monday"; } else { cout << "'" << day << "'"; return " is an invalid day of the week!"; } } const char * DayOfTheWeek::addDays(int addValue) { if ( addValue < 0 ) { if ( strcmp( day, "Monday" ) == 0) { cout << day << " - " << -addValue << " = "; return "Friday"; } else if ( strcmp( day, "Tuesday" ) == 0 ) { cout << day << " - " << -addValue << " = "; return "Saturday"; } else if ( strcmp( day, "Wednesday" ) == 0 ) { cout << day << " - " << -addValue << " = "; return "Sunday"; } else if ( strcmp( day, "Thursday" ) == 0 ) { cout << day << " - " << -addValue << " = "; return "Monday"; } else if ( strcmp( day, "Friday" ) == 0 ) { cout << day << " - " << -addValue << " = "; return "Tuesday"; } else if ( strcmp( day, "Saturday" ) == 0 ) { cout << day << " - " << -addValue << " = "; return "Wednesday"; } else if ( strcmp( day, "Sunday" ) == 0 ) { cout << day << " - " << -addValue << " = "; return "Thursday"; } else { cout << "'" << day << "' "; return "is an invalid day of the week! "; } } else // if our parameter is greater than 0 (positive) { if ( strcmp( day, "Monday" ) == 0) { cout << day << " + " << addValue << " = "; return "Thursday"; } else if ( strcmp( day, "Tuesday" ) == 0 ) { cout << day << " + " << addValue << " = "; return "Friday"; } else if ( strcmp( day, "Wednesday" ) == 0 ) { cout << day << " + " << addValue << " = "; return "Saturday"; } else if ( strcmp( day, "Thursday" ) == 0 ) { cout << day << " + " << addValue << " = "; return "Sunday"; } else if ( strcmp( day, "Friday" ) == 0 ) { cout << day << " + " << addValue << " = "; return "Monday"; } else if ( strcmp( day, "Saturday" ) == 0 ) { cout << day << " + " << addValue << " = "; return "Tuesday"; } else if ( strcmp( day, "Sunday" ) == 0 ) { cout << day << " + " << addValue << " = "; return "Wednesday"; } else { cout << "'" << day << "' "; return "is an invalid day of the week! "; } } } void DayOfTheWeek::printDay() const { cout << "The Value of the " << day; } void DayOfTheWeek::setDay(const char * day) { if (day) {// Here I am allocating the object member char day pointer this->day = new char[strlen(day)+1]; size_t length = strlen(day)+1; // +1 for trailing null char strcpy_s(this->day , length , day); // copying c-strings } else day = NULL; // If their was a problem with the parameter 'day' } DayOfTheWeek::~DayOfTheWeek() { delete day; // Free the memory allocated in SetDay } int main() { DayOfTheWeek MondayObject; // declare an object MondayObject.setDay("Monday"); // Call our public function 'setDay' to set a day of the week MondayObject.printDay(); // Call our public function 'printDay' to print the day we set cout << " object is " << MondayObject.getDay() << endl; // Print the value of the object cout << MondayObject.plusOneDay() << endl; cout << MondayObject.minusOneDay() << endl; cout << MondayObject.addDays(3) << endl; MondayObject.printDay(); cout << " object is still " << MondayObject.getDay() << endl; // Print the value of the object cout << MondayObject.addDays(-3) << endl; return 0; }

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• Why Ubuntu Server asks to insert a CD-ROM when installed from PXE?

  - by MainMa

  I set up a PXE server which hosts both Ubuntu Desktop and Ubuntu Server. Ubuntu Desktop is installed successfully from PXE. Ubuntu Server seems to successfully load vmlinuz and initrd.gz, asks for the language, then the location, then the keyboard layout, and finally complains that it can't mount the CD-ROM: The content of /var/lib/tftpboot/pxelinux.cfg/default is the following: default ubuntu-installer/amd64/boot-screens/vesamenu.c32 menu title Ubuntu setup label ubuntu-14.04-desktop-amd64 menu label ubuntu-14.04-desktop-amd64 kernel ubuntu-14.04-desktop-amd64/vmlinuz.efi append initrd=ubuntu-14.04-desktop-amd64/initrd.lz root=/dev/nfs boot=casper netboot=nfs nfsroot=192.168.1.41:/exports/ubuntu-14.04-desktop-amd64 splash -- label ubuntu-14.04-server-amd64 menu label ubuntu-14.04-server-amd64 kernel ubuntu-14.04-server-amd64/vmlinuz append initrd=ubuntu-14.04-server-amd64/initrd.gz root=/dev/nfs boot=install netboot=nfs nfsroot=192.168.1.41:/exports/ubuntu-14.04-server-amd64 splash -- What explains the fact that it requests the CD-ROM and how to avoid it?

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• Advices and strategies for browser compatibility on web applications into a corporate environment

  - by TiagoBrenck

  With the new CSS 3 and HTML 5 tecnology, the web applications gained a lot of new tools for a better UI(user interface) interaction, beautifull templates and even responsive layout to fit into tablets and smartphones. Within a corporate environment, those new tecnologies are required so the company can "follow" the IT evolution and their concurrent, but they also want that those new web applications supports old browsers. How to deal with this situation? By one side we are asked to follow the news and IT evolutions, create responsive layouts and use a lot of cool jQuery's plugins. And by the other side, we are asked to support old browsers that doesn't support those new responsive features, plugins or components. I would like advices and strategies to create "modern" web applications that are also supported on old browsers. How does your company deal with this situation? Is it possible to have the same web application running good and beauty on old browsers, and responsive, interactive on actual browsers?

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• AJAX 4 no ASP.NET 4 Web Application

  - by renatohaddad

  Andei fazendo uns testes no AJAX Control Toolkit 4 que deverá ser usado com o ASP.NET 4 no Visual Studio .NET 2010 e confesso que gostei muito. O link para download é http://www.asp.net/ajaxlibrary/act.ashx e todas as instruções constam no site. Notei que há diversos controles novos e um que me chamou a atenção foi o de Upload assíncrono para controlar os uploads de arquivos para o server. Vale a pena estudar um pouco estas novidades. Para quem já usava o AJAX no ASP.NET 3.5, a idéia do Toolkit é igual, exceto a adição de novos controles. Com o AJAX vc pode mudar todo o comportamento da sua aplicação WEB, requisições no server passam a ser menos frequentes, o layout ajuda e muito com os controles do AJAX. Nativamente no VS 2010 já há o AJAX que a MS suporta nativamente (ScriptManager, UpdatePanel, UpdateProgress, etc), mas vale a pena implementar alguns controles do Toolkit. Bons estudos!

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• using Unity Android In a sub view and add actionbar and style

  - by aeroxr1

  I exported a simple animation from Unity3D (version 4.5) in android project. With eclipse I modified the manifest and added another activity. In this activity I put a button that it makes start the animation,and this is the result. The action bar appear in the main activity but it doesn't in the unity's activity :( How can I add the action bar and the style of the first activity to unity's animation activity ? This is the unity's activity's code : package com.rabidgremlin.tut.redcube; import android.app.NativeActivity; import android.content.res.Configuration; import android.graphics.PixelFormat; import android.os.Bundle; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.view.Window; import android.view.WindowManager; import com.unity3d.player.UnityPlayer; public class UnityPlayerNativeActivity extends NativeActivity { protected UnityPlayer mUnityPlayer; // don't change the name of this variable; referenced from native code // Setup activity layout @Override protected void onCreate (Bundle savedInstanceState) { //requestWindowFeature(Window.FEATURE_NO_TITLE); super.onCreate(savedInstanceState); getWindow().takeSurface(null); //setTheme(android.R.style.Theme_NoTitleBar_Fullscreen); getWindow().setFormat(PixelFormat.RGB_565); mUnityPlayer = new UnityPlayer(this); /*if (mUnityPlayer.getSettings ().getBoolean ("hide_status_bar", true)) getWindow ().setFlags (WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); */ setContentView(mUnityPlayer); mUnityPlayer.requestFocus(); } // Quit Unity @Override protected void onDestroy () { mUnityPlayer.quit(); super.onDestroy(); } // Pause Unity @Override protected void onPause() { super.onPause(); mUnityPlayer.pause(); } // eliminiamo questa onResume() e proviamo a modificare la onResume() // Resume Unity @Override protected void onResume() { super.onResume(); mUnityPlayer.resume(); } // inseriamo qualche modifica qui // This ensures the layout will be correct. @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); mUnityPlayer.configurationChanged(newConfig); } // Notify Unity of the focus change. @Override public void onWindowFocusChanged(boolean hasFocus) { super.onWindowFocusChanged(hasFocus); mUnityPlayer.windowFocusChanged(hasFocus); } // For some reason the multiple keyevent type is not supported by the ndk. // Force event injection by overriding dispatchKeyEvent(). @Override public boolean dispatchKeyEvent(KeyEvent event) { if (event.getAction() == KeyEvent.ACTION_MULTIPLE) return mUnityPlayer.injectEvent(event); return super.dispatchKeyEvent(event); } // Pass any events not handled by (unfocused) views straight to UnityPlayer @Override public boolean onKeyUp(int keyCode, KeyEvent event) { return mUnityPlayer.injectEvent(event); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { return mUnityPlayer.injectEvent(event); } @Override public boolean onTouchEvent(MotionEvent event) { return mUnityPlayer.injectEvent(event); } /*API12*/ public boolean onGenericMotionEvent(MotionEvent event) { return mUnityPlayer.injectEvent(event); } } And this is the AndroidManifest.xml android:versionCode="1" android:versionName="1.0" > <!-- android:theme="@android:style/Theme.NoTitleBar"--> <supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="true" android:smallScreens="true" android:xlargeScreens="true" /> <application android:icon="@drawable/app_icon" android:label="@string/app_name" android:theme="@android:style/Theme.Holo.Light" > <activity android:name="com.rabidgremlin.tut.redcube.UnityPlayerNativeActivity" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale" android:label="@string/app_name" android:screenOrientation="portrait" > <!--android:launchMode="singleTask"--> <meta-data android:name="unityplayer.UnityActivity" android:value="true" /> <meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="false" /> </activity> <activity android:name="com.rabidgremlin.tut.redcube.MainActivity" android:label="@string/title_activity_main" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-sdk android:minSdkVersion="17" android:targetSdkVersion="19" /> <uses-feature android:glEsVersion="0x00020000" /> </manifest>

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• Accessing a Service from within an XNA Content Pipeline Extension

  - by David Wallace

  I need to allow my content pipeline extension to use a pattern similar to a factory. I start with a dictionary type: public delegate T Mapper<T>(MapFactory<T> mf, XElement d); public class MapFactory<T> { Dictionary<string, Mapper<T>> map = new Dictionary<string, Mapper<T>>(); public void Add(string s, Mapper<T> m) { map.Add(s, m); } public T Get(XElement xe) { if (xe == null) throw new ArgumentNullException( "Invalid document"); var key = xe.Name.ToString(); if (!map.ContainsKey(key)) throw new ArgumentException( key + " is not a valid key."); return map[key](this, xe); } public IEnumerable<T> GetAll(XElement xe) { if (xe == null) throw new ArgumentNullException( "Invalid document"); foreach (var e in xe.Elements()) { var val = e.Name.ToString(); if (map.ContainsKey(val)) yield return map[val](this, e); } } } Here is one type of object I want to store: public partial class TestContent { // Test type public string title; // Once test if true public bool once; // Parameters public Dictionary<string, object> args; public TestContent() { title = string.Empty; args = new Dictionary<string, object>(); } public TestContent(XElement xe) { title = xe.Name.ToString(); args = new Dictionary<string, object>(); xe.ParseAttribute("once", once); } } XElement.ParseAttribute is an extension method that works as one might expect. It returns a boolean that is true if successful. The issue is that I have many different types of tests, each of which populates the object in a way unique to the specific test. The element name is the key to MapFactory's dictionary. This type of test, while atypical, illustrates my problem. public class LogicTest : TestBase { string opkey; List<TestBase> items; public override bool Test(BehaviorArgs args) { if (items == null) return false; if (items.Count == 0) return false; bool result = items[0].Test(args); for (int i = 1; i < items.Count; i++) { bool other = items[i].Test(args); switch (opkey) { case "And": result &= other; if (!result) return false; break; case "Or": result |= other; if (result) return true; break; case "Xor": result ^= other; break; case "Nand": result = !(result & other); break; case "Nor": result = !(result | other); break; default: result = false; break; } } return result; } public static TestContent Build(MapFactory<TestContent> mf, XElement xe) { var result = new TestContent(xe); string key = "Or"; xe.GetAttribute("op", key); result.args.Add("key", key); var names = mf.GetAll(xe).ToList(); if (names.Count() < 2) throw new ArgumentException( "LogicTest requires at least two entries."); result.args.Add("items", names); return result; } } My actual code is more involved as the factory has two dictionaries, one that turns an XElement into a content type to write and another used by the reader to create the actual game objects. I need to build these factories in code because they map strings to delegates. I have a service that contains several of these factories. The mission is to make these factory classes available to a content processor. Neither the processor itself nor the context it uses as a parameter have any known hooks to attach an IServiceProvider or equivalent. Any ideas?

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• SQL SERVER – Weekly Series – Memory Lane – #035

  - by Pinal Dave

  Here is the list of selected articles of SQLAuthority.com across all these years. Instead of just listing all the articles I have selected a few of my most favorite articles and have listed them here with additional notes below it. Let me know which one of the following is your favorite article from memory lane. 2007 Row Overflow Data Explanation  In SQL Server 2005 one table row can contain more than one varchar(8000) fields. One more thing, the exclusions has exclusions also the limit of each individual column max width of 8000 bytes does not apply to varchar(max), nvarchar(max), varbinary(max), text, image or xml data type columns. Comparison Index Fragmentation, Index De-Fragmentation, Index Rebuild – SQL SERVER 2000 and SQL SERVER 2005 An old but like a gold article. Talks about lots of concepts related to Index and the difference from earlier version to the newer version. I strongly suggest that everyone should read this article just to understand how SQL Server has moved forward with the technology. Improvements in TempDB SQL Server 2005 had come up with quite a lots of improvements and this blog post describes them and explains the same. If you ask me what is my the most favorite article from early career. I must point out to this article as when I wrote this one I personally have learned a lot of new things. Recompile All The Stored Procedure on Specific TableI prefer to recompile all the stored procedure on the table, which has faced mass insert or update. sp_recompiles marks stored procedures to recompile when they execute next time. This blog post explains the same with the help of a script.  2008 SQLAuthority Download – SQL Server Cheatsheet You can download and print this cheat sheet and use it for your personal reference. If you have any suggestions, please let me know and I will see if I can update this SQL Server cheat sheet. Difference Between DBMS and RDBMS What is the difference between DBMS and RDBMS? DBMS – Data Base Management System RDBMS – Relational Data Base Management System or Relational DBMS High Availability – Hot Add Memory Hot Add CPU and Hot Add Memory are extremely interesting features of the SQL Server, however, personally I have not witness them heavily used. These features also have few restriction as well. I blogged about them in detail. 2009 Delete Duplicate Rows I have demonstrated in this blog post how one can identify and delete duplicate rows. Interesting Observation of Logon Trigger On All Servers – Solution The question I put forth in my previous article was – In single login why the trigger fires multiple times; it should be fired only once. I received numerous answers in thread as well as in my MVP private news group. Now, let us discuss the answer for the same. The answer is – It happens because multiple SQL Server services are running as well as intellisense is turned on. Blog post demonstrates how we can do the same with the help of SQL scripts. Management Studio New Features I have selected my favorite 5 features and blogged about it. IntelliSense for Query Editing Multi Server Query Query Editor Regions Object Explorer Enhancements Activity Monitors Maximum Number of Index per Table One of the questions I asked in my user group was – What is the maximum number of Index per table? I received lots of answers to this question but only two answers are correct. Let us now take a look at them in this blog post. 2010 Default Statistics on Column – Automatic Statistics on Column The truth is, Statistics can be in a table even though there is no Index in it. If you have the auto- create and/or auto-update Statistics feature turned on for SQL Server database, Statistics will be automatically created on the Column based on a few conditions. Please read my previously posted article, SQL SERVER – When are Statistics Updated – What triggers Statistics to Update, for the specific conditions when Statistics is updated. 2011 T-SQL Scripts to Find Maximum between Two Numbers In this blog post there are two different scripts listed which demonstrates way to find the maximum number between two numbers. I need your help, which one of the script do you think is the most accurate way to find maximum number? Find Details for Statistics of Whole Database – DMV – T-SQL Script I was recently asked is there a single script which can provide all the necessary details about statistics for any database. This question made me write following script. I was initially planning to use sp_helpstats command but I remembered that this is marked to be deprecated in future. 2012 Introduction to Function SIGN SIGN Function is very fundamental function. It will return the value 1, -1 or 0. If your value is negative it will return you negative -1 and if it is positive it will return you positive +1. Let us start with a simple small example. Template Browser – A Very Important and Useful Feature of SSMS Templates are like a quick cheat sheet or quick reference. Templates are available to create objects like databases, tables, views, indexes, stored procedures, triggers, statistics, and functions. Templates are also available for Analysis Services as well. The template scripts contain parameters to help you customize the code. You can Replace Template Parameters dialog box to insert values into the script. An invalid floating point operation occurred If you run any of the above functions they will give you an error related to invalid floating point. Honestly there is no workaround except passing the function appropriate values. SQRT of a negative number will give you result in real numbers which is not supported at this point of time as well LOG of a negative number is not possible (because logarithm is the inverse function of an exponential function and the exponential function is NEVER negative). Validating Spatial Object with IsValidDetailed Function SQL Server 2012 has introduced the new function IsValidDetailed(). This function has made my life very easy. In simple words, this function will check if the spatial object passed is valid or not. If it is valid it will give information that it is valid. If the spatial object is not valid it will return the answer that it is not valid and the reason for the same. This makes it very easy to debug the issue and make the necessary correction. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Memory Lane, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• Interactive Master Detail Report Just A Few Minutes Away!

  - by kanichiro.nishida

  Oracle BI Publisher 11G have not just made Master Detail report development much easier and quicker, but also made it more interactive and fun without any coding or scripting. I’ve just created a short video that shows how to create such Master Detail report within a few minutes, so please take a look if you’re interested in!     With 11G, now you can create such report only with your browser very quickly and your report audience will be not only able to interact with the report but also able to view it in a pixel-perfect way with many different formats such as PDF, Excel, Word, PPT, etc. Happy Master Detail Reports development and design! Please share any feedback you have with Interactive Viewer and Layout Editor with us!

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• Will there be a difference between Unity "Desktop" and Unity "Netbook" interface?

  - by bash

  What has me slightly confused from all the different reports about Unity becoming the default shell in the 11.04 desktop edition: Some claim and this is how most people seem to see it, that what currently is the UNE interface will be taken 1:1 (including any changes made during the Natty cycle) and used as the interface for the desktop version - meaning that the interface will be exactly the same for 11.04 UNE and UDE. Some other reports talk more along the lines a "desktop unity", making it sound, that while both will be using Unity, the Desktop edition will get it's own Unity, tailored specifically towards the Desktop formfactor. So both editions will be using Unity, but with slight differences in the layout or interface. So my question is, will there be any difference between 11.04 Unity "Desktop" and Unity "Netbook" interface?

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• java: List wrapper where get()/set() is allowed but add/remove is not

  - by Jason S

  I need to wrap a List<T> with some class that allows calls to set/get but does not allow add/remove calls, so that the list remains "stuck" at a fixed length. I think I have a thin wrapper class (below) that will work, but I'm not 100% positive. Did I miss anything obvious? import java.util.Collection; import java.util.Iterator; import java.util.List; import java.util.ListIterator; class RestrictedListWrapper<T> implements List<T> { static <T> T fail() throws UnsupportedOperationException { throw new UnsupportedOperationException(); } static private class IteratorWrapper<T> implements ListIterator<T> { final private ListIterator<T> iter; private IteratorWrapper(ListIterator<T> iter) { this.iter = iter; } static public <T> RestrictedListWrapper.IteratorWrapper<T> wrap(ListIterator<T> target) { return new RestrictedListWrapper.IteratorWrapper<T>(target); } @Override public void add(T e) { fail(); } @Override public boolean hasNext() { return this.iter.hasNext(); } @Override public boolean hasPrevious() { return this.iter.hasPrevious(); } @Override public T next() { return this.iter.next(); } @Override public int nextIndex() { return this.iter.nextIndex(); } @Override public T previous() { return this.iter.previous(); } @Override public int previousIndex() { return this.iter.previousIndex(); } @Override public void remove() { fail(); } @Override public void set(T e) { this.iter.set(e); } } final private List<T> list; private RestrictedListWrapper(List<T> list) { this.list = list; } static public <T> RestrictedListWrapper<T> wrap(List<T> target) { return new RestrictedListWrapper<T>(target); } @Override public boolean add(T arg0) { return fail(); } @Override public void add(int index, T element) { fail(); } @Override public boolean addAll(Collection<? extends T> arg0) { return fail(); } @Override public boolean addAll(int arg0, Collection<? extends T> arg1) { return fail(); } /** * clear() allows setting all members of the list to null */ @Override public void clear() { ListIterator<T> it = this.list.listIterator(); while (it.hasNext()) { it.set(null); it.next(); } } @Override public boolean contains(Object o) { return this.list.contains(o); } @Override public boolean containsAll(Collection<?> c) { return this.list.containsAll(c); } @Override public T get(int index) { return this.list.get(index); } @Override public int indexOf(Object o) { return this.list.indexOf(o); } @Override public boolean isEmpty() { return false; } @Override public Iterator<T> iterator() { return listIterator(); } @Override public int lastIndexOf(Object o) { return this.list.lastIndexOf(o); } @Override public ListIterator<T> listIterator() { return IteratorWrapper.wrap(this.list.listIterator()); } @Override public ListIterator<T> listIterator(int index) { return IteratorWrapper.wrap(this.list.listIterator(index)); } @Override public boolean remove(Object o) { return fail(); } @Override public T remove(int index) { fail(); return fail(); } @Override public boolean removeAll(Collection<?> c) { return fail(); } @Override public boolean retainAll(Collection<?> c) { return fail(); } @Override public T set(int index, T element) { return this.list.set(index, element); } @Override public int size() { return this.list.size(); } @Override public List<T> subList(int fromIndex, int toIndex) { return new RestrictedListWrapper<T>(this.list.subList(fromIndex, toIndex)); } @Override public Object[] toArray() { return this.list.toArray(); } @Override public <T> T[] toArray(T[] a) { return this.list.toArray(a); } }

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• Data, Log and Temp file placement

  - by jchang

  First especially for all the people with SAN storage, drive letters are of no consequence. What matters is the actual physical disk layout. Forget capacity, pay attention to the number of spindles supporting each RAID group. If the RAID group is shared with other application, make sure there the SLA guarantees read and write latency. One very large company conducted a stress test in the QA environment. The SAN admin carved the LUNs from the same pool of disks as production, but thought he had a really...(read more)

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• The Case of the Extra Page: Rendering Reporting Services as PDF

  - by smisner

  I had to troubleshoot a problem with a mysterious extra page appearing in a PDF this week. My first thought was that it was likely to caused by one of the most common problems that people encounter when developing reports that eventually get rendered as PDF is getting blank pages inserted into the PDF document. The cause of the blank pages is usually related to sizing. You can learn more at Understanding Pagination in Reporting Services in Books Online. When designing a report, you have to be really careful with the layout of items in the body. As you move items around, the body will expand to accommodate the space you're using and you might eventually tighten everything back up again, but the body doesn't automatically collapse. One of my favorite things to do in Reporting Services 2005 - which I dubbed the "vacu-pack" method - was to just erase the size property of the Body and let it auto-calculate the new size, squeezing out all the extra space. Alas, that method no longer works beginning with Reporting Services 2008. Even when you make sure the body size is as small as possible (with no unnecessary extra space along the top, bottom, left, or right side of the body), it's important to calculate the body size plus header plus footer plus the margins and ensure that the calculated height and width do not exceed the report's height and width (shown as the page in the illustration above). This won't matter if users always render reports online, but they'll get extra pages in a PDF document if the report's height and width are smaller than the calculate space. Beginning the Investigation In the situation that I was troubleshooting, I checked the properties: Item Property Value Body Height 6.25in   Width 10.5in Page Header Height 1in Page Footer Height 0.25in Report Left Margin 0.1in   Right Margin 0.1in   Top Margin 0.05in   Bottom Margin 0.05in   Page Size - Height 8.5in   Page Size - Width 11in So I calculated the total width using Body Width + Left Margin + Right Margin and came up with a value of 10.7 inches. And then I calculated the total height using Body Height + Page Header Height + Page Footer Height + Top Margin + Bottom Margin and got 7.6 inches. Well, page sizing couldn't be the reason for the extra page in my report because 10.7 inches is smaller than the report's width of 11 inches and 7.6 inches is smaller than the report's height of 8.5 inches. I had to look elsewhere to find the culprit. Conducting the Third Degree My next thought was to focus on the rendering size of the items in the report. I've adapted my problem to use the Adventure Works database. At the top of the report are two charts, and then below each chart is a rectangle that contains a table. In the real-life scenario, there were some graphics present as a background for the tables which fit within the rectangles that were about 3 inches high so the visual space of the rectangles matched the visual space of the charts - also about 3 inches high. But there was also a huge amount of white space at the bottom of the page, and as I mentioned at the beginning of this post, a second page which was blank except for the footer that appeared at the bottom. Placing a textbox beneath the rectangles to see if they would appear on the first page resulted the textbox's appearance on the second page. For some reason, the rectangles wanted a buffer zone beneath them. What's going on? Taking the Suspect into Custody My next step was to see what was really going on with the rectangle. The graphic appeared to be correctly sized, but the behavior in the report indicated the rectangle was growing. So I added a border to the rectangle to see what it was doing. When I added borders, I could see that the size of each rectangle was growing to accommodate the table it contains. The rectangle on the right is slightly larger than the one on the left because the table on the right contains an extra row. The rectangle is trying to preserve the whitespace that appears in the layout, as shown below. Closing the Case Now that I knew what the problem was, what could I do about it? Because of the graphic in the rectangle (not shown), I couldn't eliminate the use of the rectangles and just show the tables. But fortunately, there is a report property that comes to the rescue: ConsumeContainerWhitespace (accessible only in the Properties window). I set the value of this property to True. Problem solved. Now the rectangles remain fixed at the configured size and don't grow vertically to preserve the whitespace. Case closed.

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• migrating webclient to WCF; WCF client serializes parametername of method

  - by Wouter

  I'm struggling with migrating from webservice/webclient architecture to WCF architecture. The object are very complex, with lots of nested xsd's and different namespaces. Proxy classes are generated by adding a Web Reference to an original wsdl with 30+ webmethods and using xsd.exe for generating the missing SOAPFault objects. My pilot WCF Service consists of only 1 webmethod which matches the exact syntax of one of the original methods: 1 object as parameter, returning 1 other object as result value. I greated a WCF Interface using those proxy classes, using attributes: XMLSerializerFormat and ServiceContract on the interface, OperationContract on one method from original wsdl specifying Action, ReplyAction, all with the proper namespaces. I create incoming client messages using SoapUI; I generated a project from the original WSDL files (causing the SoapUI project to have 30+ methods) and created one new Request at the one implemented WebMethod, changed the url to my wcf webservice and send the message. Because of the specified (Reply-)Action in the OperationContractAttribute, the message is actually received and properly deserialized into an object. To get this far (40 hours of googling), a lot of frustration led me to using a custom endpoint in which the WCF 'wrapped tags' are removed, the namespaces for nested types are corrected, and the generated wsdl get's flattened (for better compatibility with other tools then MS VisualStudio). Interface code is this: [XmlSerializerFormat(Use = OperationFormatUse.Literal, Style = OperationFormatStyle.Document, SupportFaults = true)] [ServiceContract(Namespace = Constants.NamespaceStufZKN)] public interface IOntvangAsynchroon { [OperationContract(Action = Constants.NamespaceStufZKN + "/zakLk01", ReplyAction = Constants.NamespaceStufZKN + "/zakLk01", Name = "zakLk01")] [FaultContract(typeof(Fo03Bericht), Namespace = Constants.NamespaceStuf)] Bv03Bericht zakLk01([XmlElement("zakLk01", Namespace = Constants.NamespaceStufZKN)] ZAKLk01 zakLk011); When I use a Webclient in code to send a message, everything works. My problem is, when I use a WCF client. I use ChannelFactory< IOntvangAsynchroon to send a message. But the generated xml looks different: it includes the parametername of the method! It took me a lot of time to figure this one out, but here's what happens: Correct xml (stripped soap envelope): <soap:Body> <zakLk01 xmlns="http://www.egem.nl/StUF/sector/zkn/0310"> <stuurgegevens> <berichtcode xmlns="http://www.egem.nl/StUF/StUF0301">Bv01</berichtcode> <zender xmlns="http://www.egem.nl/StUF/StUF0301"> <applicatie>ONBEKEND</applicatie> </zender> </stuurgegevens> <parameters> </parameters> </zakLk01> </soap:Body> Bad xml: <soap:Body> <zakLk01 xmlns="http://www.egem.nl/StUF/sector/zkn/0310"> <zakLk011> <stuurgegevens> <berichtcode xmlns="http://www.egem.nl/StUF/StUF0301">Bv01</berichtcode> <zender xmlns="http://www.egem.nl/StUF/StUF0301"> <applicatie>ONBEKEND</applicatie> </zender> </stuurgegevens> <parameters> </parameters> </zakLk011> </zakLk01> </soap:Body> Notice the 'zakLk011' element? It is the name of the parameter of the method in my interface! So NOW it is zakLk011, but it when my parameter name was 'zakLk01', the xml seemed to contain some magical duplicate of the tag above, but without namespace. Of course, you can imagine me going crazy over what was happening before finding out it was the parametername! I know have actually created a WCF Service, at which I cannot send messages using a WCF Client anymore. For clarity: The method does get invoked using the WCF Client on my webservice, but the parameter object is empty. Because I'm using a custom endpoint to log the incoming xml, I can see the message is received fine, but just with the wrong syntax! WCF client code: ZAKLk01 stufbericht = MessageFactory.CreateZAKLk01(); ChannelFactory<IOntvangAsynchroon> factory = new ChannelFactory<IOntvangAsynchroon>(new BasicHttpBinding(), new EndpointAddress("http://localhost:8193/Roxit/Link/zkn0310")); factory.Endpoint.Behaviors.Add(new LinkEndpointBehavior()); IOntvangAsynchroon client = factory.CreateChannel(); client.zakLk01(stufbericht); I am not using a generated client, i just reference the webservice like i am lot's of times. Can anyone please help me? I can't google anything on this...

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• Cisco VPN Client Behind ASA 5505

  - by fdf33

  I'm trying to get connected to another ASA via Cisco VPN Client. I am behind an ASA 5505 myself and I am tryihng to VPN to a 5510. I get the message: Secure VPN Connection terminated locally by the Client. Reason 412: The remote peer is no longer responding. I can connect to the other ASA if I use a normal cheap Linksys. Here's the version of my ASA: Result of the command: "sh ver" Cisco Adaptive Security Appliance Software Version 8.4(1) Any help would be great. Thanks running-config : Saved : Written by enable_15 at 23:12:32.378 UTC Fri Jul 1 2011 ! ASA Version 8.4(1) ! hostname aaaasa domain-name aaa.local enable password xxxxxxxxxxxxxxx encrypted passwd xxxxxxxxxxxxxxxxxxxx encrypted names ! interface Vlan1 nameif inside security-level 100 ip address 192.168.1.254 255.255.255.0 ! interface Vlan2 nameif outside security-level 0 ip address xxx.xxx.xxx.xxx 255.255.254.0 ! interface Vlan5 no nameif security-level 50 ip address 172.16.0.254 255.255.255.0 ! interface Vlan500 no nameif security-level 100 ip address 10.10.10.1 255.255.255.0 ! interface Ethernet0/0 switchport access vlan 2 ! interface Ethernet0/1 ! interface Ethernet0/2 ! interface Ethernet0/3 ! interface Ethernet0/4 ! interface Ethernet0/5 ! interface Ethernet0/6 ! interface Ethernet0/7 ! boot system disk0:/asa841-k8.bin ftp mode passive dns domain-lookup inside dns domain-lookup outside dns server-group DefaultDNS name-server 4.2.2.2 domain-name aaa.local same-security-traffic permit inter-interface same-security-traffic permit intra-interface object network obj_any subnet 0.0.0.0 0.0.0.0 object network A_93.97.168.1 host 93.97.168.1 object network rdp host 192.168.1.2 object network NETWORK_OBJ_192.168.1.0_24 subnet 192.168.1.0 255.255.255.0 access-list 101 extended permit tcp any host 192.168.1.2 eq 3389 access-list 101 extended permit icmp any any echo-reply access-list 101 extended permit icmp any any source-quench access-list 101 extended permit icmp any any time-exceeded access-list 101 extended permit icmp any any unreachable access-list 102 extended permit ip any any pager lines 24 logging enable logging asdm informational mtu inside 1500 mtu outside 1492 ip local pool VPNPool 192.168.2.200-192.168.2.210 mask 255.255.255.0 icmp unreachable rate-limit 1 burst-size 1 asdm image disk0:/asdm-641.bin no asdm history enable arp timeout 14400 ! object network rdp nat (inside,outside) static interface service tcp 3389 3389 ! nat (inside,outside) after-auto source dynamic any interface access-group 101 in interface outside access-group 102 out interface outside ! router ospf 1 network 192.168.1.0 255.255.255.0 area 0 log-adj-changes ! route outside 0.0.0.0 0.0.0.0 93.97.168.1 1 timeout xlate 3:00:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02 timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00 timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00 timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute timeout tcp-proxy-reassembly 0:01:00 dynamic-access-policy-record DfltAccessPolicy http server enable http 192.168.1.0 255.255.255.0 inside no snmp-server location no snmp-server contact snmp-server enable traps snmp authentication linkup linkdown coldstart crypto ipsec ikev2 ipsec-proposal DES protocol esp encryption des protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal 3DES protocol esp encryption 3des protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal AES protocol esp encryption aes protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal AES192 protocol esp encryption aes-192 protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal AES256 protocol esp encryption aes-256 protocol esp integrity sha-1 md5 crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set ikev2 ipsec-proposal AES256 AES192 AES 3DES DES crypto map outside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP crypto map outside_map interface outside crypto ca trustpoint ASDM_TrustPoint0 enrollment self subject-name CN=ciscoasa proxy-ldc-issuer crl configure crypto ca certificate chain ASDM_TrustPoint0 certificate 8877d64d 30820248 308201b1 a0030201 02020488 77d64d30 0d06092a 864886f7 0d010105 05003036 3111300f 06035504 03130863 6973636f 61736131 21301f06 092a8648 86f70d01 09021612 63697363 6f617361 2e6e6a64 2e6c6f63 616c301e 170d3131 30353231 30383533 34325a17 0d323130 35313830 38353334 325a3036 3111300f 06035504 03130863 6973636f 61736131 21301f06 092a8648 86f70d01 09021612 63697363 6f617361 2e6e6a64 2e6c6f63 616c3081 9f300d06 092a8648 86f70d01 01010500 03818d00 30818902 818100ea 1aa95141 480e616c efee6816 a96d6511 313b6776 cd3dd57b cd84b4d2 5e108aee 7c980086 4d92e2eb b6c7bf66 4585af0a ccbf153a db9270be c6f5c67b db9dd8d1 2f78d033 3348b056 df4be0da 70e08953 53adf294 9db6c020 597d250f bf448b43 b90179c8 ff0b15d8 744632d9 31c1945f 0b11e258 b4c1d224 692efff4 7b2f5102 03010001 a3633061 300f0603 551d1301 01ff0405 30030101 ff300e06 03551d0f 0101ff04 04030201 86301f06 03551d23 04183016 8014493c 19db183a ab1af9e9 b1e44ad4 2a408b3c 89d1301d 0603551d 0e041604 14493c19 db183aab 1af9e9b1 e44ad42a 408b3c89 d1300d06 092a8648 86f70d01 01050500 03818100 1dd1760a fdd15941 4803fb9a cd6f44a7 2e275854 a1c0fbe1 d19f2cc9 182d43ef a547f854 8df96d15 3ea79c62 cf3fcb1c 5820360b c607dbfc 4de8bb16 19f727e9 b928a085 665816d8 138e4a35 ed610950 7910dd4a 0b1a9dd9 0e26f1c8 b78bc0cc cbf19eb2 4c4c3931 45199ea5 249e3266 661e44fd 7a00d376 dcfc6e4e d43f10b8 quit crypto isakmp nat-traversal 30 crypto ikev2 policy 1 encryption aes-256 integrity sha group 5 prf sha lifetime seconds 86400 crypto ikev2 policy 10 encryption aes-192 integrity sha group 5 prf sha lifetime seconds 86400 crypto ikev2 policy 20 encryption aes integrity sha group 5 prf sha lifetime seconds 86400 crypto ikev2 policy 30 encryption 3des integrity sha group 5 prf sha lifetime seconds 86400 crypto ikev2 policy 40 encryption des integrity sha group 5 prf sha lifetime seconds 86400 crypto ikev2 enable outside client-services port 443 crypto ikev2 remote-access trustpoint ASDM_TrustPoint0 telnet timeout 5 ssh 192.168.1.0 255.255.255.0 inside ssh timeout 5 console timeout 0 dhcpd auto_config outside ! dhcpd address 192.168.1.5-192.168.1.36 inside dhcpd dns 4.2.2.2 interface inside dhcpd enable inside ! threat-detection basic-threat threat-detection statistics host number-of-rate 3 threat-detection statistics port threat-detection statistics protocol threat-detection statistics access-list threat-detection statistics tcp-intercept rate-interval 30 burst-rate 400 average-rate 200 ntp server 82.219.4.31 source outside prefer ssl trust-point ASDM_TrustPoint0 outside webvpn enable outside anyconnect image disk0:/anyconnect-win-2.4.1012-k9.pkg 1 anyconnect profiles AnyConnectVPN_client_profile disk0:/AnyConnectVPN_client_profile.xml anyconnect profiles SSLAnyConnectVPN_client_profile disk0:/SSLAnyConnectVPN_client_profile.xml anyconnect enable tunnel-group-list enable group-policy GroupPolicy_AnyConnectVPN internal group-policy GroupPolicy_AnyConnectVPN attributes wins-server none dns-server value 4.2.2.2 vpn-tunnel-protocol ikev2 ssl-client ssl-clientless default-domain value aaa.local webvpn url-list none anyconnect profiles value AnyConnectVPN_client_profile type user group-policy GroupPolicy_SSLAnyConnectVPN internal group-policy GroupPolicy_SSLAnyConnectVPN attributes wins-server none dns-server value 4.2.2.2 vpn-tunnel-protocol ikev2 ssl-client default-domain value aaa.local webvpn anyconnect profiles value SSLAnyConnectVPN_client_profile type user username testuser password xxxxxxxxxxxxxxxxx encrypted privilege 0 username testuser attributes vpn-group-policy GroupPolicy_AnyConnectVPN tunnel-group SSLPOL type remote-access tunnel-group SSLPOL general-attributes default-group-policy GroupPolicy_AnyConnectVPN tunnel-group SSLAnyConnectVPN type remote-access tunnel-group SSLAnyConnectVPN general-attributes address-pool VPNPool default-group-policy GroupPolicy_SSLAnyConnectVPN tunnel-group SSLAnyConnectVPN webvpn-attributes group-alias SSLAnyConnectVPN enable ! class-map inspection_default match default-inspection-traffic ! ! policy-map type inspect dns preset_dns_map parameters message-length maximum 512 policy-map global_policy class inspection_default inspect dns preset_dns_map inspect esmtp inspect ftp inspect h323 h225 inspect h323 ras inspect ip-options inspect netbios inspect rsh inspect rtsp inspect sip inspect skinny inspect sqlnet inspect sunrpc inspect tftp inspect xdmcp ! service-policy global_policy global prompt hostname context call-home profile CiscoTAC-1 no active destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService destination address email [email protected] destination transport-method http subscribe-to-alert-group diagnostic subscribe-to-alert-group environment subscribe-to-alert-group inventory periodic monthly subscribe-to-alert-group configuration periodic monthly subscribe-to-alert-group telemetry periodic daily Cryptochecksum:94a65341aa27d3929d5e92a32ba22120 : end

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• Custom Model Binding of IEnumerable Properties in ASP.Net MVC 2

  - by Doug Lampe

  MVC 2 provides a GREAT feature for dealing with enumerable types.  Let's say you have an object with a parent/child relationship and you want to allow users to modify multiple children at the same time.  You can simply use the following syntax for any indexed enumerables (arrays, generic lists, etc.) and then your values will bind to your enumerable model properties. 1: <% using (Html.BeginForm("TestModelParameter", "Home")) 2: { %> 3: < table > 4: < tr >< th >ID</th><th>Name</th><th>Description</th></tr> 5: <% for (int i = 0; i < Model.Items.Count; i++) 6: { %> 7: < tr > 8: < td > 9: <%= i %> 10: </ td > 11: < td > 12: <%= Html.TextBoxFor(m => m.Items[i].Name) %> 13: </ td > 14: < td > 15: <%= Model.Items[i].Description %> 16: </ td > 17: </ tr > 18: <% } %> 19: </ table > 20: < input type ="submit" /> 21: <% } %> Then just update your model either by passing it into your action method as a parameter or explicitly with UpdateModel/TryUpdateModel. 1: public ActionResult TestTryUpdate() 2: { 3: ContainerModel model = new ContainerModel(); 4: TryUpdateModel(model); 5:   6: return View("Test", model); 7: } 8:   9: public ActionResult TestModelParameter(ContainerModel model) 10: { 11: return View("Test", model); 12: } Simple right?  Well, not quite.  The problem is the DefaultModelBinder and how it sets properties.  In this case our model has a property that is a generic list (Items).  The first bad thing the model binder does is create a new instance of the list.  This can be fixed by making the property truly read-only by removing the set accessor.  However this won't help because this behaviour continues.  As the model binder iterates through the items to "set" their values, it creates new instances of them as well.  This means you lose any information not passed via the UI to your controller so in the examplel above the "Description" property would be blank for each item after the form posts. One solution for this is custom model binding.  I have put together a solution which allows you to retain the structure of your model.  Model binding is a somewhat advanced concept so you may need to do some additional research to really understand what is going on here, but the code is fairly simple.  First we will create a binder for the parent object which will retain the state of the parent as well as some information on which children have already been bound. 1: public class ContainerModelBinder : DefaultModelBinder 2: { 3: /// <summary> 4: /// Gets an instance of the model to be used to bind child objects. 5: /// </summary> 6: public ContainerModel Model { get; private set; } 7:   8: /// <summary> 9: /// Gets a list which will be used to track which items have been bound. 10: /// </summary> 11: public List<ItemModel> BoundItems { get; private set; } 12:   13: public ContainerModelBinder() 14: { 15: BoundItems = new List<ItemModel>(); 16: } 17:   18: protected override object CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) 19: { 20: // Set the Model property so child binders can find children. 21: Model = base.CreateModel(controllerContext, bindingContext, modelType) as ContainerModel; 22:   23: return Model; 24: } 25: } Next we will create the child binder and have it point to the parent binder to get instances of the child objects.  Note that this only works if there is only one property of type ItemModel in the parent class since the property to find the item in the parent is hard coded. 1: public class ItemModelBinder : DefaultModelBinder 2: { 3: /// <summary> 4: /// Gets the parent binder so we can find objects in the parent's collection 5: /// </summary> 6: public ContainerModelBinder ParentBinder { get; private set; } 7: 8: public ItemModelBinder(ContainerModelBinder containerModelBinder) 9: { 10: ParentBinder = containerModelBinder; 11: } 12:   13: protected override object CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) 14: { 15: // Find the item in the parent collection and add it to the bound items list. 16: ItemModel item = ParentBinder.Model.Items.FirstOrDefault(i => !ParentBinder.BoundItems.Contains(i)); 17: ParentBinder.BoundItems.Add(item); 18: 19: return item; 20: } 21: } Finally, we will register these binders in Global.asax.cs so they will be used to bind the classes. 1: protected void Application_Start() 2: { 3: AreaRegistration.RegisterAllAreas(); 4:   5: ContainerModelBinder containerModelBinder = new ContainerModelBinder(); 6: ModelBinders.Binders.Add(typeof(ContainerModel), containerModelBinder); 7: ModelBinders.Binders.Add(typeof(ItemModel), new ItemModelBinder(containerModelBinder)); 8:   9: RegisterRoutes(RouteTable.Routes); 10: } I'm sure some of my fellow geeks will comment that this could be done more efficiently by simply rewriting some of the methods of the default model binder to get the same desired behavior.  I like my method shown here because it extends the binder class instead of modifying it so it minimizes the potential for unforseen problems. In a future post (if I ever get around to it) I will explore creating a generic version of these binders.

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• How to Achieve OC4J RMI Load Balancing

  - by fip

  This is an old, Oracle SOA and OC4J 10G topic. In fact this is not even a SOA topic per se. Questions of RMI load balancing arise when you developed custom web applications accessing human tasks running off a remote SOA 10G cluster. Having returned from a customer who faced challenges with OC4J RMI load balancing, I felt there is still some confusions in the field how OC4J RMI load balancing work. Hence I decide to dust off an old tech note that I wrote a few years back and share it with the general public. Here is the tech note: Overview A typical use case in Oracle SOA is that you are building web based, custom human tasks UI that will interact with the task services housed in a remote BPEL 10G cluster. Or, in a more generic way, you are just building a web based application in Java that needs to interact with the EJBs in a remote OC4J cluster. In either case, you are talking to an OC4J cluster as RMI client. Then immediately you must ask yourself the following questions: 1. How do I make sure that the web application, as an RMI client, even distribute its load against all the nodes in the remote OC4J cluster? 2. How do I make sure that the web application, as an RMI client, is resilient to the node failures in the remote OC4J cluster, so that in the unlikely case when one of the remote OC4J nodes fail, my web application will continue to function? That is the topic of how to achieve load balancing with OC4J RMI client. Solutions You need to configure and code RMI load balancing in two places: 1. Provider URL can be specified with a comma separated list of URLs, so that the initial lookup will land to one of the available URLs. 2. Choose a proper value for the oracle.j2ee.rmi.loadBalance property, which, along side with the PROVIDER_URL property, is one of the JNDI properties passed to the JNDI lookup.(http://docs.oracle.com/cd/B31017_01/web.1013/b28958/rmi.htm#BABDGFBI) More details below: About the PROVIDER_URL The JNDI property java.name.provider.url's job is, when the client looks up for a new context at the very first time in the client session, to provide a list of RMI context The value of the JNDI property java.name.provider.url goes by the format of a single URL, or a comma separate list of URLs. A single URL. For example: opmn:ormi://host1:6003:oc4j_instance1/appName1 A comma separated list of multiple URLs. For examples:  opmn:ormi://host1:6003:oc4j_instanc1/appName, opmn:ormi://host2:6003:oc4j_instance1/appName, opmn:ormi://host3:6003:oc4j_instance1/appName When the client looks up for a new Context the very first time in the client session, it sends a query against the OPMN referenced by the provider URL. The OPMN host and port specifies the destination of such query, and the OC4J instance name and appName are actually the “where clause” of the query. When the PROVIDER URL reference a single OPMN server Let's consider the case when the provider url only reference a single OPMN server of the destination cluster. In this case, that single OPMN server receives the query and returns a list of the qualified Contexts from all OC4Js within the cluster, even though there is a single OPMN server in the provider URL. A context represent a particular starting point at a particular server for subsequent object lookup. For example, if the URL is opmn:ormi://host1:6003:oc4j_instance1/appName, then, OPMN will return the following contexts: appName on oc4j_instance1 on host1 appName on oc4j_instance1 on host2, appName on oc4j_instance1 on host3,  (provided that host1, host2, host3 are all in the same cluster) Please note that One OPMN will be sufficient to find the list of all contexts from the entire cluster that satisfy the JNDI lookup query. You can do an experiment by shutting down appName on host1, and observe that OPMN on host1 will still be able to return you appname on host2 and appName on host3. When the PROVIDER URL reference a comma separated list of multiple OPMN servers When the JNDI propery java.naming.provider.url references a comma separated list of multiple URLs, the lookup will return the exact same things as with the single OPMN server: a list of qualified Contexts from the cluster. The purpose of having multiple OPMN servers is to provide high availability in the initial context creation, such that if OPMN at host1 is unavailable, client will try the lookup via OPMN on host2, and so on. After the initial lookup returns and cache a list of contexts, the JNDI URL(s) are no longer used in the same client session. That explains why removing the 3rd URL from the list of JNDI URLs will not stop the client from getting the EJB on the 3rd server. About the oracle.j2ee.rmi.loadBalance Property After the client acquires the list of contexts, it will cache it at the client side as “list of available RMI contexts”.  This list includes all the servers in the destination cluster. This list will stay in the cache until the client session (JVM) ends. The RMI load balancing against the destination cluster is happening at the client side, as the client is switching between the members of the list. Whether and how often the client will fresh the Context from the list of Context is based on the value of the  oracle.j2ee.rmi.loadBalance. The documentation at http://docs.oracle.com/cd/B31017_01/web.1013/b28958/rmi.htm#BABDGFBI list all the available values for the oracle.j2ee.rmi.loadBalance. Value Description client If specified, the client interacts with the OC4J process that was initially chosen at the first lookup for the entire conversation. context Used for a Web client (servlet or JSP) that will access EJBs in a clustered OC4J environment. If specified, a new Context object for a randomly-selected OC4J instance will be returned each time InitialContext() is invoked. lookup Used for a standalone client that will access EJBs in a clustered OC4J environment. If specified, a new Context object for a randomly-selected OC4J instance will be created each time the client calls Context.lookup(). Please note the regardless of the setting of oracle.j2ee.rmi.loadBalance property, the “refresh” only occurs at the client. The client can only choose from the "list of available context" that was returned and cached from the very first lookup. That is, the client will merely get a new Context object from the “list of available RMI contexts” from the cache at the client side. The client will NOT go to the OPMN server again to get the list. That also implies that if you are adding a node to the server cluster AFTER the client’s initial lookup, the client would not know it because neither the server nor the client will initiate a refresh of the “list of available servers” to reflect the new node. About High Availability (i.e. Resilience Against Node Failure of Remote OC4J Cluster) What we have discussed above is about load balancing. Let's also discuss high availability. This is how the High Availability works in RMI: when the client use the context but get an exception such as socket is closed, it knows that the server referenced by that Context is problematic and will try to get another unused Context from the “list of available contexts”. Again, this list is the list that was returned and cached at the very first lookup in the entire client session.

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• Partnering with a web designer to build and launch websites for fun. Where should I look for someone? [closed]

  - by FastCoder

  I have been working with web sites and web development for a long time and as a result I am able to build and launch complex websites (social network, dating site, stackoverflow, etc.) in little time (1-3 weeks). Problem is: I know very little about CSS, page layout, photoshop and graphic design. Of course I know HTML but when it comes to putting together something that looks good I am horrible. I just don't have the artistic skills. I wanted to launch some websites without any silly or naive intent to take over the world. Just for fun and to improve the portfolio. How do you guys recommend that I approach this problem of "finding this right partner" with the same mindset? Where should I look for this person? I have no idea... :(

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• Web Application Tasks Estimation

  - by Ali

  I know the answer depends on the exact project and its requirements but i am asking on the avarage % of the total time goes into the tasks of the web application development statistically from your own experiance. While developing a web application (database driven) How much % of time does each of the following activities usually takes: -- database creation & all related stored procedures -- server side development -- client side development -- layout settings and designing I know there are lots of great web application developers around here and each one of you have done fair amount of web development and as a result there could be an almost fixed percentage of time going to each of the above activities of web developments for standard projects Update : I am not expecting someone to tell me number of hours i am asking about the average percentage of time that goes on each of the activities as per your experience i.e. server side dev 50%, client side development 20% ,,,,, I repeat there will be lots of cases that differs from the standard depending on the exact requirments of each web application project but here i am asking about Avarage for standard (no special requirment) web project

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