This article written by Siamak Azodolmolky, the author of Software Defined Networking with OpenFlow, covers the role of the OpenFlow controllers, the interface to the switch, and the provided API for Network Applications ( Net Apps ). We will also see:
- The overall functionality of the OpenFlow (SDN) controllers
- The existing implementations (including NOX/POX, NodeFlow, Floodlight, and OpenDaylight)
- Special controllers or applications over controllers (FlowVisor and RouteFlow)
You are probably already aware of the fact that Packt is set to launch two new brands, Packt Enterprise and Packt Open Source, in the coming weeks. You may even have read about it on our blog or in a previous news piece. This article will offer a slightly more in-depth look at what the brand launch will mean, and why we are doing it.Read The Reasoning Behind Packt's Brand Launch in full
In this article by Narayan Bhat, we will see how to install The Rotating Post Titles with Post Preview Gadget in your blog. This gadget contains Official Google code created using the Dynamic Feed Control from the Google AJAX Feed API. It will show all the post titles in your blog classified according to Labels (in Blogger) or Categories (in Wordpress). It will also show a brief rotating post preview at the top.Read The Rotating Post Titles with Post Preview Gadget in full
This article by James Kennard shows how we can interact with the current user, logged in or not, and how we can interact with their session.
This article contains the following recipes:
- Getting the session handler
- Adding data to the session
- Getting session data
- Checking for session data
- Checking the session token
- Getting the user
- Determining if the current user is a guest
- Getting the user's name and username
- Getting the user's group ID and type
- Restricting a user's access using Public, Registered, and Special
- Getting the user's parameters
- Setting the user's parameters
- Extending and editing user parameters
- Sending an email to the user
In this article, by Andrey Koleshko, author of the book Rake Task Management Essentials, we will cover the installation of Rake, the definition of basic terms such as rake task and Rakefile, and how to use them for easy programming issues. The introduction will be given using straightforward examples to explain the terms as clearly as possible. You will see that Rake is a tool that is written in the Ruby programming language, and that's why any Ruby code can be written in a Rake application. Also, you have the choice of using any available Ruby library in a Rake project. This feature makes Rake the winner compared to many other build tools, which use their own limited languages. The article will serve as a base for introducing Rake's Domain Specific Language (DSL) and project file structuring.
In this article, we will cover the following topics:
- Installing Rake
- Introducing rake tasks
- The command-line arguments
- Using global Rakefiles to run tasks anywhere
- Defining custom rake tasks
- The structure of a Rake project
- The code conventions of Rake
This article written by Luca Zamboni, the author of Getting Started with Simulink describes how solvers are used by Simulink to run the simulation. It explains how every solver perform the simulation by advancing one time step and computing the new outputs starting from the previous state(s) of the system until the end of the simulation time. The initial system state must be fully defined.
The appropriate solver for a model can be chosen by defining these characteristics:
- Time step size, which can be fixed or variable
- Presence of continuous states in the system
- Stiffness of the system
In this article, by Manuel Xavier, the author of TIBCO Spotfire for Developers, we will introduce the Spotfire Platform products, defining their independent roles in the platform's architecture. The platform's main features are also described in this article.Read The Spotfire Architecture Overview in full
The Trivadis Integration Architecture Blueprint specifies the building blocks needed for the effective implementation of integration solutions. It ensures consistent quality in the implementation of integration strategies as a result of a simple, tried-and-tested structure, and the use of familiar integration patterns (Hohpe, Wolf 2004).
In this article by Guido Schmutz, co-author of Service-Oriented Architecture: An Integration Blueprint, we will cover:
- Standards, components, and patterns used
- Structuring the integration blueprint
Having understood the structure of the blueprint covered in the previous article on The Trivadis Integration Architecture Blueprint, this article will use individual scenarios to illustrate how the business pattern can be implemented using the Integration Architecture Blueprint.
This article by Guido Schmutz, co-author of Service-Oriented Architecture: An Integration Blueprint, will:
- Explain service-oriented integration scenarios
- Explain how an existing integration solution can be modernized using SOA, and describe a scenario that has already been implemented in practice
In this article by Geoff Sholler, author of the book "Build a Game with UDK", we will explain the sound component of the Unreal Engine. The Unreal Engine is used in many games out on the market. It's also used in other industries for things such as simulation. Regardless of the use, any product using the Unreal Engine will also use the Unreal Development Kit and the tools within it. This article will cover most of the tools included in the Unreal Development Kit.Read The Unreal Engine in full
This article will cover the following topics:
- The TabPanel and Carousel components
- The FormPanel components
- MessageBox and Sheet
- The map component
- The List and NestedList components
WordPress is a flexible and powerful tool that's ideal for creating both blog and non-blog websites. You can customize the features, incorporate your own design, and even write your own plugins with ease. Its versatility and ease of use have attracted a large, enthusiastic, and helpful community of users.
To celebrate the publication of the WordPress 3.0 Complete book, Packt is offering a series of attractive discounts on all WordPress books for a period of 10 days.
* Buy any WordPress print book and get 20% off
* Buy any WordPress eBook and get 30% off
This offer will last for a 10 day period starting from 18th February and ending 28th February 2011. Grab your copy now !
Read The Wonderful 10 days of WordPress in full
There are so many types of desktop virtualizations that you can easily get confused with each type, its use, and its architecture. In this article by Mahmoud Magdy, author of Instant Citrix XenDesktop 5 Starter , we will explore each type and we will also explore the XenDesktop architecture.Read The XenDesktop architecture in full
In this article by Dave Newton we will learn how to modify the built-in themes and templates of Struts 2. We'll introduce a requirement to a recipe entry screen to have some different behavior when there is a validation error. The default behavior now is to change the style of the label and print the error message above the field. We'd like to highlight the entire row as a gentle reminder that our user has left out something important.Read Themes and Templates with Apache Struts 2 in full
The look and feel of any website is a major factor that drives traffic towards the site. A theme is responsible to give a consistent look and feel to a website. In this article by Theodore S Boomer, we will see how to select and delete themes for e107 websites. We will also have a look at the theme layout and build an understanding of it.Read Themes in e107 in full
In this article by Stefan Kohler, author of Atlassian Confluence 5 Essentials, we will cover the topics of themes – how to configure them, the look and feel of Confluence – how to customize it, and we will talk about logos that we will use in Confluence.Read Themes, the look and feel, and logos in full
The Philosophy Quotes module that we will create in this article will use Drupal's theme system and a simple database query to theme the content of a custom content type.
Here are some of the items we will cover in this article by Matt Butcher while working on this module:
- Creating a custom content type
- Performing simple database operations
- Registering a module's theme functions with the hook_theme() function
- Adding theme hooks to a module
- Adding CSS stylesheets to a module's default theme
- Using theme CSS and template files to override default module theme functions
You can do more with the ORDER BY clause in a query than just putting in it a column or two. By mixing and matching the cases and solution examples in this article you will have virtually unlimited sorting flexibilities in your armory. This article by Djoni Darmawikarta shows how to solve various ordering cases in SELECT queries.Read There is More to the ORDER BY Clause than Sorting a Column in full
In this article by Aaron Winborn, we will see how to add third-party video on a site. This article talks about the advantages of third-party video hosting and how it can be achieved on websites by using Drupal. Its also gives a proper insight about the Third-Party Video providers and Embedded Media Field, which helps in hosting video from our own server.Read Third-Party Video Hosting on Drupal Websites in full