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  • What is an effective way to convert a shared memory-mapped system to another data access model?

    - by Rob Jones
    I have a code base that is designed around shared memory. Each process that needs to access the memory maps it into its own address space. The data structures in the shared memory are directly accessed, that is, there is no API. For example: Assume the following: typedef struct { int x; int y; struct { int a; int b; } z; } myStruct; myStruct s; Then a process might access this structure as: myStruct *s = mapGlobalMem(); And use it as: int tmpX = s->x; The majority of the information in the global structure is configuration information that is set once and read many times. I would like to store this information in a database and develop an API to access the database. The problem is, these references are sprinkled throughout the code. I need a way to parse the code and identify global structure references that will need to be refactored. I've looked into using ANTLR to create a parser that will identify references to a small set of structures and enter them into a custom symbol table. I could then use this symbol table to identify which source files need to be refactored. It looks like a promising approach. What other approaches are there? Of course, I'm looking for a programmatic approach. There are far too many source files to examine each one visually. This is all ordinary ANSI C. Nothing else.

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  • What is a good one-stop-shop for understanding software licensing information?

    - by Macy Abbey
    I've learned a fair amount about the various different software licensing models and what those models mean for my own software project. However, I'd like to make sure I understand as many of them as possible for making decisions on how to license my own software and in what scenarios I can safely use software under a licensing model. Do you have a good recommendation for a book/site etc.. that has this information in one location?

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  • How do I find information on who links to my sites?

    - by bobdobbs
    I'm trying to figure out if there's a free way to get information on backlinks to my site. I've had webmaster tools and google analytics set up for years. But I can't find access to data about site backlinks in either toolset. Webmaster tools, under 'traffic'-'links to your site' gives me the same message for all of my sites: "No data available". I haven't been able to find anything in GA that gives any information on backlinks. I've heard of using "links:" as an operator in google search, but for each of my sites, this returns either zero or very few results in cases when I know I have many backlinks. Most of the links simple aren't shown. My thinking is that google maintains a graph of who links to my site, so I figured that they might let me see it. But I can't figure out how. I've found this tool on a spammy website: http://www.backlinkwatch.com. It offers more data than google on my backlines, and offers more results in exchange for a paid subscription. The data it offers for free looks good, but the results are limited and the site has popups and obnoxious ads. So, in short: how do I get data on who links to me? Is there a free way?

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  • My architecture has a problem with views that required information from different objects. How can I solve this?

    - by Oscar
    I am building an architecture like this: These are my SW layers ______________ | | | Views | |______________| ______________ | | |Business Logic| |______________| ______________ | | | Repository | |______________| My views are going to generate my HTML to be sent to the user Business logic is where all the business logics are Repository is a layer to access the DB My idea is that the repository uses entities (that are basically the representation of the tables, in order to perform DB queries. The layers communicate between themselves using Business Objects, that are objects that represent the real-world-object itself. They can contain business rules and methods. The views build/use DTOs, they are basically objects that have the information required to be shown on the screen. They expect also this kind of object on actions and, before calling the business logic, they create BO. First question: what is your overall feeling about this architecture? I've used similar architecture for some projects and I always got this problem: If my view has this list to show : Student1, age, course, Date Enrolled, Already paid? It has information from different BO. How do you think one should build the structure? These were the alternatives I could think of: The view layer could call the methods to get the student, then the course it studies, then the payment information. This would cause a lot of DB accesses and my view would have the knowledge about how to act to generate this information. This just seems wrong for me. I could have an "adapter object", that has the required information (a class that would have a properties Student, Course and Payment). But I would required one adapter object for each similar case, this may get very bad for big projects. I still don't like them. Would you have ideas? How would you change the architecture to avoid this kind of problems? @Rory: I read the CQRS and I don't think this suits my needs. As taken from a link references in your link Before describing the details of CQRS we need to understand the two main driving forces behind it: collaboration and staleness That means: many different actors using the same object (collaboration) and once data has been shown to a user, that same data may have been changed by another actor – it is stale (staleness). My problem is that I want to show to the user information from different BO, so I would need to receive them from the service layer. How can my service layer assemble and deliver this information? Edit to @AndrewM: Yes, you understood it correctly, the original idea was to have the view layer to build the BOs, but you have a very nice point about the creation of the BO inside the business layers. Assuming I follow your advice and move the creation logic inside the business layer, my business layer interface would contain the DTOs, for instance public void foo(MyDTO object) But as far as I understand, the DTO is tightly coupled to each view, so it would not be reusable by a second view. In order to use it, the second view would need to build a specific DTO from a specific view or I would have to duplicate the code in the business layer. Is this correct or am I missing something?

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  • Let a model instance choose appropriate view class using category. Is it good design?

    - by Denis Mikhaylov
    Assume I have abstract base model class called MoneySource. And two realizations BankCard and CellularAccount. In MoneysSourceListViewController I want to display a list of them, but with ListItemView different for each MoneySource subclass. What if I define a category on MoneySource @interface MoneySource (ListItemView) - (Class)listItemViewClass; @end And then override it for each concrete sublcass of MoneySource, returning suitable view class. @implementation CellularAccount (ListItemView) - (Class)listItemViewClass { return [BankCardListView class]; } @end @implementation BankCard (ListItemView) - (Class)listItemViewClass { return [CellularAccountListView class]; } @end so I can ask model object about its view, not violating MVC principles, and avoiding class introspection or if constructions. Thank you!

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  • Spotlight on Oracle Social Relationship Management. Social Enable Your Enterprise with Oracle SRM.

    - by Pat Ma
    Facebook is now the most popular site on the Internet. People are tweeting more than they send email. Because there are so many people on social media, companies and brands want to be there too. They want to be able to listen to social chatter, engage with customers on social, create great-looking Facebook pages, and roll out social-collaborative work environments within their organization. This is where Oracle Social Relationship Management (SRM) comes in. Oracle SRM is a product that allows companies to manage their presence with prospects and customers on social channels. Let's talk about two popular use cases with Oracle SRM. Easy Publishing - Companies now have an average of 178 social media accounts - with every product or geography or employee group creating their own social media channel. For example, if you work at an international hotel chain with every single hotel creating their own Facebook page for their location, that chain can have well over 1,000 social media accounts. Managing these channels is a mess - with logging in and out of every account, making sure that all accounts are on brand, and preventing rogue posts from destroying the brand. This is where Oracle SRM comes in. With Oracle Social Relationship Management, you can log into one window and post messages to all 1,000+ social channels at once. You can set up approval flows and have each account generate their own content but that content must be approved before publishing. The benefits of this are easy social media publishing, brand consistency across all channels, and protection of your brand from inappropriate posts. Monitoring and Listening - People are writing and talking about your company right now on social media. 75% of social media users have written a negative post about a brand after a poor customer service experience. Think about all the negative posts you see in your Facebook news feed about delayed flights or being on hold for 45 minutes. There is so much social chatter going on around your brand that it's almost impossible to keep up or comprehend what's going on. That's where Oracle SRM comes in. With Social Relationship Management, a company can monitor and listen to what people are saying about them on social channels. They can drill down into individual posts or get a high level view of trends and mentions. The benefits of this are comprehending what's being said about your brand and its competitors, understanding customers and their intent, and responding to negative posts before they become a PR crisis. Oracle SRM is part of Oracle Cloud. The benefits of cloud deployment for customers are faster deployments, less maintenance, and lower cost of ownership versus on-premise deployments. Oracle SRM also fits into Oracle's vision to social enable your enterprise. With Oracle SRM, social media is not just a marketing channel. Social media is also mechanism for sales, customer support, recruiting, and employee collaboration. For more information about how Oracle SRM can social enable your enterprise, please visit oracle.com/social. For more information about Oracle Cloud, please visit cloud.oracle.com.

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  • Why is the screen resolution different between Windows 7 Ultimate and Enterprise editions?

    - by IDispose
    I installed Windows 7 Enterprise 64 bit edition on my Dell Precision M6400 with an nVidia Quadro Fx 2700M card and I see that even though the screen resolution is set to 1920 X 1200, its not the same as the Windows 7 Ultimate 64 bit installed on a second hard drive. Both OSes show that the screen resolution is set at 1920 X 1200 but Ultimate shows more pixels than Enterprise. I also reinstalled the display driver but in vain. Any ideas? TIA

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  • Core Data Migration - "Can't add source store" error

    - by Tofrizer
    Hi, In my iPhone app I'm using Core Data and I've made changes to my data model that cannot be automatically migrated over (i.e. added new relationships). I added the data model version (Design - Data Model - Add Model Version) and applied my new data model changes to the new version 2. I then created a mapping object model and set the Source and Destination models to their correct data models (old and new respectively). When I run the app and call the persistentStoreCoordinator, my app barfs with the following: 2010-02-27 02:40:30.922 XXXX[73578:20b] Unresolved error Error Domain=NSCocoaErrorDomain Code=134110 UserInfo=0xfc2240 "Operation could not be completed. (Cocoa error 134110.)", { NSUnderlyingError = Error Domain=NSCocoaErrorDomain Code=134130 UserInfo=0xfbb3a0 "Operation could not be completed. (Cocoa error 134130.)"; reason = "Can't add source store"; } FWIW (not much i think) I've also made the usual code changes in persistentStoreCoordinator to use the NSMigratePersistentStoresAutomaticallyOption and NSInferMappingModelAutomaticallyOption (for future data model changes that can be automatically migrated). More relevantly, my managedObjectModel is created by calling initWithContentsOfURL where the file/resource type is "momd". I've tried updating both the source and destination model in the mapping model (Design - Mapping Model - Update XXX Model) as well as deleted the mapping model and recreated it. I've cleaned and re-built but all to no avail. I still get the above error message. Any pointers/thoughts on how I can further debug or resolve this problem please? I haven't posted any code snippets because this feels much more like a build environment issue (and my code is very standard - just the usual core data code to handle migrations using a mapping model but I'm happy to show the code if it helps). Appreciate any help. Thanks

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  • Box2dx: Usage of World.QueryAABB?

    - by Rosarch
    I'm using Box2dx with C#/XNA. I'm trying to write a function that determines if a body could exist in a given point without colliding with anything: /// <summary> /// Can gameObject exist with start Point without colliding with anything? /// </summary> internal bool IsAvailableArea(GameObjectModel model, Vector2 point) { Vector2 originalPosition = model.Body.Position; model.Body.Position = point; // less risky would be to use a deep clone AABB collisionBox; model.Body.GetFixtureList().GetAABB(out collisionBox); // how is this supposed to work? physicsWorld.QueryAABB(x => true, ref collisionBox); model.Body.Position = originalPosition; return true; } Is there a better way to go about doing this? How is World.QueryAABB supposed to work? Here is an earlier attempt. It is broken; it always returns false. /// <summary> /// Can gameObject exist with start Point without colliding with anything? /// </summary> internal bool IsAvailableArea(GameObjectModel model, Vector2 point) { Vector2 originalPosition = model.Body.Position; model.Body.Position = point; // less risky would be to use a deep clone AABB collisionBox; model.Body.GetFixtureList().GetAABB(out collisionBox); ICollection<GameObjectController> gameObjects = worldQueryEngine.GameObjectsForPredicate(x => ! x.Model.Passable); foreach (GameObjectController controller in gameObjects) { AABB potentialCollidingBox; controller.Model.Body.GetFixtureList().GetAABB(out potentialCollidingBox); if (AABB.TestOverlap(ref collisionBox, ref potentialCollidingBox)) { model.Body.Position = originalPosition; return false; // there is something that will collide at this point } } model.Body.Position = originalPosition; return true; }

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  • Introducing Oracle VM Server for SPARC

    - by Honglin Su
    As you are watching Oracle's Virtualization Strategy Webcast and exploring the great virtualization offerings of Oracle VM product line, I'd like to introduce Oracle VM Server for SPARC --  highly efficient, enterprise-class virtualization solution for Sun SPARC Enterprise Systems with Chip Multithreading (CMT) technology. Oracle VM Server for SPARC, previously called Sun Logical Domains, leverages the built-in SPARC hypervisor to subdivide supported platforms' resources (CPUs, memory, network, and storage) by creating partitions called logical (or virtual) domains. Each logical domain can run an independent operating system. Oracle VM Server for SPARC provides the flexibility to deploy multiple Oracle Solaris operating systems simultaneously on a single platform. Oracle VM Server also allows you to create up to 128 virtual servers on one system to take advantage of the massive thread scale offered by the CMT architecture. Oracle VM Server for SPARC integrates both the industry-leading CMT capability of the UltraSPARC T1, T2 and T2 Plus processors and the Oracle Solaris operating system. This combination helps to increase flexibility, isolate workload processing, and improve the potential for maximum server utilization. Oracle VM Server for SPARC delivers the following: Leading Price/Performance - The low-overhead architecture provides scalable performance under increasing workloads without additional license cost. This enables you to meet the most aggressive price/performance requirement Advanced RAS - Each logical domain is an entirely independent virtual machine with its own OS. It supports virtual disk mutipathing and failover as well as faster network failover with link-based IP multipathing (IPMP) support. Moreover, it's fully integrated with Solaris FMA (Fault Management Architecture), which enables predictive self healing. CPU Dynamic Resource Management (DRM) - Enable your resource management policy and domain workload to trigger the automatic addition and removal of CPUs. This ability helps you to better align with your IT and business priorities. Enhanced Domain Migrations - Perform domain migrations interactively and non-interactively to bring more flexibility to the management of your virtualized environment. Improve active domain migration performance by compressing memory transfers and taking advantage of cryptographic acceleration hardware. These methods provide faster migration for load balancing, power saving, and planned maintenance. Dynamic Crypto Control - Dynamically add and remove cryptographic units (aka MAU) to and from active domains. Also, migrate active domains that have cryptographic units. Physical-to-virtual (P2V) Conversion - Quickly convert an existing SPARC server running the Oracle Solaris 8, 9 or 10 OS into a virtualized Oracle Solaris 10 image. Use this image to facilitate OS migration into the virtualized environment. Virtual I/O Dynamic Reconfiguration (DR) - Add and remove virtual I/O services and devices without needing to reboot the system. CPU Power Management - Implement power saving by disabling each core on a Sun UltraSPARC T2 or T2 Plus processor that has all of its CPU threads idle. Advanced Network Configuration - Configure the following network features to obtain more flexible network configurations, higher performance, and scalability: Jumbo frames, VLANs, virtual switches for link aggregations, and network interface unit (NIU) hybrid I/O. Official Certification Based On Real-World Testing - Use Oracle VM Server for SPARC with the most sophisticated enterprise workloads under real-world conditions, including Oracle Real Application Clusters (RAC). Affordable, Full-Stack Enterprise Class Support - Obtain worldwide support from Oracle for the entire virtualization environment and workloads together. The support covers hardware, firmware, OS, virtualization, and the software stack. SPARC Server Virtualization Oracle offers a full portfolio of virtualization solutions to address your needs. SPARC is the leading platform to have the hard partitioning capability that provides the physical isolation needed to run independent operating systems. Many customers have already used Oracle Solaris Containers for application isolation. Oracle VM Server for SPARC provides another important feature with OS isolation. This gives you the flexibility to deploy multiple operating systems simultaneously on a single Sun SPARC T-Series server with finer granularity for computing resources.  For SPARC CMT processors, the natural level of granularity is an execution thread, not a time-sliced microsecond of execution resources. Each CPU thread can be treated as an independent virtual processor. The scheduler is naturally built into the CPU for lower overhead and higher performance. Your organizations can couple Oracle Solaris Containers and Oracle VM Server for SPARC with the breakthrough space and energy savings afforded by Sun SPARC Enterprise systems with CMT technology to deliver a more agile, responsive, and low-cost environment. Management with Oracle Enterprise Manager Ops Center The Oracle Enterprise Manager Ops Center Virtualization Management Pack provides full lifecycle management of virtual guests, including Oracle VM Server for SPARC and Oracle Solaris Containers. It helps you streamline operations and reduce downtime. Together, the Virtualization Management Pack and the Ops Center Provisioning and Patch Automation Pack provide an end-to-end management solution for physical and virtual systems through a single web-based console. This solution automates the lifecycle management of physical and virtual systems and is the most effective systems management solution for Oracle's Sun infrastructure. Ease of Deployment with Configuration Assistant The Oracle VM Server for SPARC Configuration Assistant can help you easily create logical domains. After gathering the configuration data, the Configuration Assistant determines the best way to create a deployment to suit your requirements. The Configuration Assistant is available as both a graphical user interface (GUI) and terminal-based tool. Oracle Solaris Cluster HA Support The Oracle Solaris Cluster HA for Oracle VM Server for SPARC data service provides a mechanism for orderly startup and shutdown, fault monitoring and automatic failover of the Oracle VM Server guest domain service. In addition, applications that run on a logical domain, as well as its resources and dependencies can be controlled and managed independently. These are managed as if they were running in a classical Solaris Cluster hardware node. Supported Systems Oracle VM Server for SPARC is supported on all Sun SPARC Enterprise Systems with CMT technology. UltraSPARC T2 Plus Systems ·   Sun SPARC Enterprise T5140 Server ·   Sun SPARC Enterprise T5240 Server ·   Sun SPARC Enterprise T5440 Server ·   Sun Netra T5440 Server ·   Sun Blade T6340 Server Module ·   Sun Netra T6340 Server Module UltraSPARC T2 Systems ·   Sun SPARC Enterprise T5120 Server ·   Sun SPARC Enterprise T5220 Server ·   Sun Netra T5220 Server ·   Sun Blade T6320 Server Module ·   Sun Netra CP3260 ATCA Blade Server Note that UltraSPARC T1 systems are supported on earlier versions of the software.Sun SPARC Enterprise Systems with CMT technology come with the right to use (RTU) of Oracle VM Server, and the software is pre-installed. If you have the systems under warranty or with support, you can download the software and system firmware as well as their updates. Oracle Premier Support for Systems provides fully-integrated support for your server hardware, firmware, OS, and virtualization software. Visit oracle.com/support for information about Oracle's support offerings for Sun systems. For more information about Oracle's virtualization offerings, visit oracle.com/virtualization.

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  • Hundreds of unknown entries in Linux logwatch

    - by Saif Bechan
    I have a dedicated server which runs centos. Today i got an email from loginwatch on my server with hundreds of lines of 'errors'. I don't really know what they are becasue i am fairly new at this. The lines are in a few sections, I will display the first 10 of all of them, i hope someone can help me fix these problems. --------------------- Named Begin ------------------------ **Unmatched Entries** client 216.146.46.136 notify question section contains no SOA: 8 Time(s) client 92.114.98.10 query (cache) 'adobe.com/A/IN' denied: 4 Time(s) network unreachable resolving '11.254.75.75.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:13c7:7002:3000::11#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:500:13::c7d4:35#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:500:2e::1#53: 2 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:610:240:0:53::193#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:610:240:0:53::3#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:660:3006:1::1:1#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:6b0:7::2#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:dc0:1:0:4777::140#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:dc0:2001:a:4608::59#53: 1 Time(s) network unreachable resolving '146.250.19.67.in-addr.arpa/PTR/IN': 2001:5a0:10::2#53: 1 Time(s) network unreachable resolving '149.207.106.87.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s) network unreachable resolving '178.62.24.195.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s) this goes on for hundreds of lines with all different domain names. --------------------- pam_unix Begin ------------------------ Failed logins from: 78.86.126.211 (78-86-126-211.zone2.bethere.co.uk): 111 times 93.97.176.136 (93-97-176-136.dsl.cnl.uk.net): 113 times 121.14.145.32: 136 times 190.152.69.5: 248 times 209.160.72.15: 572 times 210.26.48.35: 2 times 212.235.111.224 (DSL212-235-111-224.bb.netvision.net.il): 140 times 218.206.25.29: 140 times Illegal users from: 78.86.126.211 (78-86-126-211.zone2.bethere.co.uk): 2665 times 93.97.176.136 (93-97-176-136.dsl.cnl.uk.net): 2539 times 121.14.145.32: 116 times 190.152.69.5: 34 times 209.160.72.15: 324 times 218.206.25.29: 8051 times proftpd: Unknown Entries: session opened for user cent_ftp by (uid=0): 15 Time(s) session closed for user cent_ftp: 14 Time(s) sshd: Authentication Failures: unknown (218.206.25.29): 8051 Time(s) unknown (78-86-126-211.zone2.bethere.co.uk): 2665 Time(s) unknown (93.97.176.136): 2539 Time(s) root (209.160.72.15): 558 Time(s) unknown (209.160.72.15): 324 Time(s) root (190.152.69.5): 246 Time(s) unknown (121.14.145.32): 116 Time(s) root (121.14.145.32): 106 Time(s) root (dsl212-235-111-224.bb.netvision.net.il): 70 Time(s) root (93.97.176.136): 44 Time(s) root (78-86-126-211.zone2.bethere.co.uk): 37 Time(s) unknown (190.152.69.5): 34 Time(s) mysql (121.14.145.32): 30 Time(s) nobody (218.206.25.29): 26 Time(s) mail (218.206.25.29): 24 Time(s) news (218.206.25.29): 24 Time(s) root (218.206.25.29): 24 Time(s) --------------------- SSHD Begin ------------------------ **Unmatched Entries** pam_succeed_if(sshd:auth): error retrieving information about user tavi : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user pam : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user konchog : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user stavrum : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user rachel : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user affiliates : 24 time(s) pam_succeed_if(sshd:auth): error retrieving information about user nen : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user cobra : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user pass : 7 time(s) pam_succeed_if(sshd:auth): error retrieving information about user hacer : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user chung : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user zainee : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user radu : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user alka : 4 time(s) pam_succeed_if(sshd:auth): error retrieving information about user albert : 5 time(s) pam_succeed_if(sshd:auth): error retrieving information about user turcia : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user cordell : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user silver : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user dragon : 3 time(s) If someone wants to see the whole log i can upload it somewhere. Am i being hacked, what is this all?? I hope someone can help me, this does not look good at all.

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  • Big smart ViewModels, dumb Views, and any model, the best MVVM approach?

    - by Edward Tanguay
    The following code is a refactoring of my previous MVVM approach (Fat Models, skinny ViewModels and dumb Views, the best MVVM approach?) in which I moved the logic and INotifyPropertyChanged implementation from the model back up into the ViewModel. This makes more sense, since as was pointed out, you often you have to use models that you either can't change or don't want to change and so your MVVM approach should be able to work with any model class as it happens to exist. This example still allows you to view the live data from your model in design mode in Visual Studio and Expression Blend which I think is significant since you could have a mock data store that the designer connects to which has e.g. the smallest and largest strings that the UI can possibly encounter so that he can adjust the design based on those extremes. Questions: I'm a bit surprised that I even have to "put a timer" in my ViewModel since it seems like that is a function of INotifyPropertyChanged, it seems redundant, but it was the only way I could get the XAML UI to constantly (once per second) reflect the state of my model. So it would be interesting to hear anyone who may have taken this approach if you encountered any disadvantages down the road, e.g. with threading or performance. The following code will work if you just copy the XAML and code behind into a new WPF project. XAML: <Window x:Class="TestMvvm73892.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:TestMvvm73892" Title="Window1" Height="300" Width="300"> <Window.Resources> <ObjectDataProvider x:Key="DataSourceCustomer" ObjectType="{x:Type local:CustomerViewModel}" MethodName="GetCustomerViewModel"/> </Window.Resources> <DockPanel DataContext="{StaticResource DataSourceCustomer}"> <StackPanel DockPanel.Dock="Top" Orientation="Horizontal"> <TextBlock Text="{Binding Path=FirstName}"/> <TextBlock Text=" "/> <TextBlock Text="{Binding Path=LastName}"/> </StackPanel> <StackPanel DockPanel.Dock="Top" Orientation="Horizontal"> <TextBlock Text="{Binding Path=TimeOfMostRecentActivity}"/> </StackPanel> </DockPanel> </Window> Code Behind: using System; using System.Windows; using System.ComponentModel; using System.Threading; namespace TestMvvm73892 { public partial class Window1 : Window { public Window1() { InitializeComponent(); } } //view model public class CustomerViewModel : INotifyPropertyChanged { private string _firstName; private string _lastName; private DateTime _timeOfMostRecentActivity; private Timer _timer; public string FirstName { get { return _firstName; } set { _firstName = value; this.RaisePropertyChanged("FirstName"); } } public string LastName { get { return _lastName; } set { _lastName = value; this.RaisePropertyChanged("LastName"); } } public DateTime TimeOfMostRecentActivity { get { return _timeOfMostRecentActivity; } set { _timeOfMostRecentActivity = value; this.RaisePropertyChanged("TimeOfMostRecentActivity"); } } public CustomerViewModel() { _timer = new Timer(CheckForChangesInModel, null, 0, 1000); } private void CheckForChangesInModel(object state) { Customer currentCustomer = CustomerViewModel.GetCurrentCustomer(); MapFieldsFromModeltoViewModel(currentCustomer, this); } public static CustomerViewModel GetCustomerViewModel() { CustomerViewModel customerViewModel = new CustomerViewModel(); Customer currentCustomer = CustomerViewModel.GetCurrentCustomer(); MapFieldsFromModeltoViewModel(currentCustomer, customerViewModel); return customerViewModel; } public static void MapFieldsFromModeltoViewModel(Customer model, CustomerViewModel viewModel) { viewModel.FirstName = model.FirstName; viewModel.LastName = model.LastName; viewModel.TimeOfMostRecentActivity = model.TimeOfMostRecentActivity; } public static Customer GetCurrentCustomer() { return Customer.GetCurrentCustomer(); } //INotifyPropertyChanged implementation public event PropertyChangedEventHandler PropertyChanged; private void RaisePropertyChanged(string property) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(property)); } } } //model public class Customer { public string FirstName { get; set; } public string LastName { get; set; } public DateTime TimeOfMostRecentActivity { get; set; } public static Customer GetCurrentCustomer() { return new Customer { FirstName = "Jim", LastName = "Smith", TimeOfMostRecentActivity = DateTime.Now }; } } }

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  • After extending the User model in django, how do you create a ModelForm?

    - by mlissner
    I extended the User model in django to include several other variables, such as location, and employer. Now I'm trying to create a form that has the following fields: First name (from User) Last name (from User) Location (from UserProfile, which extends User via a foreign key) Employer (also from UserProfile) I have created a modelform: from django.forms import ModelForm from django.contrib import auth from alert.userHandling.models import UserProfile class ProfileForm(ModelForm): class Meta: # model = auth.models.User # this gives me the User fields model = UserProfile # this gives me the UserProfile fields So, my question is, how can I create a ModelForm that has access to all of the fields, whether they are from the User model or the UserProfile model? Hope this makes sense. I'll be happy to clarify if there are any questions.

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  • Should I design the application or model (database) first?

    - by YonahW
    I am getting ready to start building a new web project in my spare time to bring to fruition an idea that has been bouncing around my head for a while. I have never gotten down whether I am better off first building the model and then the consuming application or the other way around. What are the best practices? What would you build first and why? I imagine that in general the application should generally drive the model, however the application like many websites really doesn't do much without the model. For some reason I find it easier at times to think in terms of the model since the application is really just actions on the model. Is this a poor way of thinking about things? What advantages/disadvantages does each option have?

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  • Magneto admin separate ajax product Grid load

    - by Ela
    Hi, I have to load separate product Grid to select needed product items and store it under my another custom module's model in magento admin side. So i have a custom module created by using Module creator and added another tab which i wish to show all the products as a list or grid to select(Exactly i want it like in new order page under admin side) and store. Do you anybody know how to load product grid or list under custom module area. I really appreciate your help. Thanks

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  • How can I not render a button in my view if a given property off my model has no value?

    - by Lee Warner
    I'm new to web development. In my view, I want to conditionally show a button if Model.TemplateLocation (which is a string) is not null or empty. Below is the code that is rendering the button currently: <div class="WPButton MyButton"> <%=Html.ActionLink(Model.TemplateLinkName, "DownloadTemplate", "ExternalData", new ArgsDownloadTemplate { Path = Model.TemplateLocation, FileName = Model.TemplateFileNameForDownload }, new{})%> </div> Can I wrap some C# code in the <% %'s to test for Model.TemplateLocations value before I render that? I was told to look into @style = "display:none" somehow. Could that be what I need?

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  • "You are missing the following 32-bit libraries, and Steam may not run: libc.so.6" The common fixes don't work,

    - by M_Steam_User
    So I know this is a problem that has been asked around a lot, but I've tried a bunch of solutions with no success. I'm running Ubuntu 12.04 (64 bit), and I just installed it yesterday. This is my first time working with linux. The error is: You are missing the following 32-bit libraries, and Steam may not run: libc.so.6 Things I've tried. First, I had downloaded from the steam website. I uninstalled it, and tried again from the ubuntu software centre. sudo apt-get update sudo apt-get install ia32-libs sudo apt-get upgrade This installed a bunch of the 32 bit libraries, but did not fix the issue. This seems like the major fix for most people. The direct approach of sudo apt-get install libc.so.6 returns this: Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package libc.so.6 E: Couldn't find any package by regex 'libc.so.6' I guess libc.so.6 isn't a package, just a single file or something? I also tried gksudo gedit /etc/ld.so.conf.d/steam.conf Added these two lines, those the second one was all ready in the file, but copied over: /usr/lib32 /usr/lib/i386-linux-gnu/mesa Then executed: sudo ldconfig But nothing seemed to happen, steam still doesn't work. So, I feel like it is more likely that I have the library and steam isn't looking in the right place. One thing I've seen is people usually reference /usr/local/lib/ for your library locations. However, I can't find where to cd into /usr/, it isn't in my home folder. If /usr/ is the home folder, there is only a /.local folder which only has /share, no lib anywhere. Sorry for my linux ignorance. I appreciate any help, I honestly have no idea how to confirm I have the library and point steam to it, or if that is even the right thing to do. Edit: Tried this, not entirely sure what it means ~$ ls -l /lib32/libc* -rwxr-xr-x 1 root root 1721832 Sep 30 11:06 /lib32/libc-2.15.so -rw-r--r-- 1 root root 185928 Sep 30 11:06 /lib32/libcidn-2.15.so lrwxrwxrwx 1 root root 15 Sep 30 11:06 /lib32/libcidn.so.1 -> libcidn-2.15.so -rw-r--r-- 1 root root 34316 Sep 30 11:06 /lib32/libcrypt-2.15.so lrwxrwxrwx 1 root root 16 Sep 30 11:06 /lib32/libcrypt.so.1 -> libcrypt-2.15.so lrwxrwxrwx 1 root root 12 Sep 30 11:06 /lib32/libc.so.6 -> libc-2.15.so

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  • Unable to install ExchangeCdo with Outlook 2010

    - by MrStatic
    We recently got the Blackberry Express Server for our small home business and linked it in with our Exchange 2010 server. All is well except for calendar syncing. From what I can tell I require the ExchangeCdo patch. Except when I go to install it, it errors saying I require Outlook 2007. I have Outlook 2010 on the server and have no real way of getting 2007 on instead. Any suggestions?

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  • Who uses Zimbra Collaboration Suite and why?

    - by AlberT
    I am really curious about other people experiences and choices. After a long scouting, I found ZCS to be a really impressive solution, maybe the only real alternative to M$ Exchange. I'm very interested in opinions and case histories from users having already deployed Zimbra on their infrastructure or planning to do it. Both Community and Network edition cases are appreciated, pro and cons explained too :) Zimlets, addons, useful skins, Zimbra Desktop and other apps or mobile integration use case too of course.

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  • How to change Blackberry initial message download limit.

    - by Mikey B
    BES 4.1.6 Blackberry 8300 (curve) Hi guys, I've noticed that handhelds will typically only retrieve the first few KB and then prompt the user to manually retrieve more (or auto-retrieve if they scroll down). The problem is that I have a BB app that needs to see the entire message all at once on the first initial time it's opened. Is there a setting on BES that will allow me to change how much data a handheld initially retrieves per message? Thanks, M

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  • Puppet - how can i copy a file to several user folders?

    - by Eliot Rocha
    Well i was using the info on this: Puppet - Any way to copy predefined custom configuration files for software on clients from the puppet master (host)? But i need some more elaborated, because i have several Desktops and are in use by 2 or 3 users each one, so i want to make a class for copy a shortcut in his desktops. The computers are joined to a domain, so any user can log in any desktop, and his profile is created in every desktop. I've tryed with this: class applink { file { "/home/installer/Escritorio/Workdesktop.desktop": owner => installer, group => root, mode => 770, source => "puppet://$server/files/Workdesktop.desktop" } This is only for one user called "installer", how can do this for several users? Can i use $USER for do this? Any Thoughts? Thank You!

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  • BES - BlackBerry exception to policy Disable Third Party Software Downloads

    - by ICTdesk.net
    Hi everybody, Running BES 5.0, with an Salesforce Mobile application push. Works fine. We don't want the users to download and install other applications, so we disable this by a BES policy (disable Third Party Software Downloads). But when we disable this, the application push does not work anymore. Does anybody know/have experience with making an exception for certain applications or an exception for applications that are provided by application push from the BES? Thank you, kindest regards, Marcel

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  • AXway/tumbleweed EMF in exchange 2007

    - by Buckwheat
    Looking for someone who has implemented an axway EMF recently. I'm about to implement an axway SM product for company wide email encryption. I current have an edge transport server and an exchange 2007 server. I want to route email like the follow: the edge picks up internet email to exchange and all out going email will go out the axway. I have two things to figure out: do I only have to build a new send connector on exchange to point to a smarthost (axway) and disable the send connector going to the transport edge server? and two The axway server has to route notifcations to people. Am I looking into something like this? http://msexchangeteam.com/archive/2006/12/28/432013.aspx

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