|
Source: developerWorks : Open source : Technical library Whether looking for the nearest coffee shop on a GPS-enabled smartphone, nearby friends via a social-networking site, or all trucks within the city delivering a certain product, more and more people and businesses are using location-aware search services. Creating such services has often been the domain of expensive proprietary solutions and geospatial experts. Recently, however, the popular open source search library, Apache Lucene, and the powerful Lucene-powered search server, Apache Solr, have added spatial capabilities. Lucene and Solr committer Grant Ingersoll walks you through the basics of spatial search and shows you how to leverage its capabilities to power your next location-aware application.
Source: developerWorks : Open source : Technical library The core PHP libraries and the open source contributions to PHP provide
innumerable functions. PHP extensions provide everything from byte-code
caching to system calls. However, if you require specialized computation,
you can create your own extension with the Simplified Wrapper and
Interface Generator (SWIG).
Source: developerWorks : Open source : Technical library SugarCRM is the world's leading open source Customer Relationship Management (CRM) software provider, with over 5,000 customers and 500,000 downloads of the SugarCRM application all around the world. In December 2009, SugarCRM released version 5.5 of the application suite, which completely revitalized the Web Services platform. The changes include a faster, easier-to-use API, the ability to easily extend the API that is presented to a Web service client, and the addition of REST support. In this article, you'll take a look at what REST is and how to use the REST support in the Web Services API to interact with a SugarCRM instance.
Source: developerWorks : Open source : Technical library Google Books allows Web application developers to access book lists and metadata through its REST-based developer API. The Zend Framework's Gdata module is able to process the XML feeds generated by this API and use it in the context of customized Web applications. This article introduces the Google Book Search Data API, demonstrating how you can use it to search for books by keyword, author, and title; retrieve book thumbnails and previews; and add reviews and labels to user libraries.
Source: developerWorks : Open source : Technical library ZK, an open source Asynchronous JavaScript + XML (Ajax) framework
written in Java code, lets you write a Web 2.0-enabled, rich Internet
application without writing a single line of JavaScript code. Typical Ajax
frameworks like Dojo have JavaScript libraries that expose certain API's for
making "Ajaxified" calls. ZK, on the other hand, uses a meta-definition based
on XML to define the user interface. Translation to HTML code then occurs when
this page is requested by the client. This article introduces you to ZK and
gives you a real-world example of its use running on Apache Tomcat and
connecting to a MySQL database.
Source: developerWorks : Open source : Technical library This article is for any Eclipse developer who wants to learn how to use
the mature Web Tools Platform release of Galileo to develop, debug, and deploy
a restaurant-search Facebook application. Along the way, you will take advantage
of various aspects of the Facebook Application API and the Facebook Connect
API.
Source: developerWorks : Open source : Technical library In this "Design and develop SCA components using the Spring Framework" series, learn how Service Component Architecture (SCA) and the Spring Framework effectively combine to build distributed service applications.
This article explores some of the advanced features supported by the Apache Tuscany
runtime. Learn how multiple application contexts can be combined and used to
implement your SCA component. An example walks you through SCA annotations used to explicitly declare the SCA services, references, and properties within
your Spring bean classes.
Source: developerWorks : Open source : Technical library IBM DB2 pureXML allows you to store XML data natively in a relational database management system, giving you the power and flexibility to report on this data without disturbing the advantages that its XML format offers. In this tutorial, you will learn how to connect to a DB2 database from the Python programming language, importing data about population from the United States Census Bureau. You will use Python to convert this CSV file into XML, before inserting this XML data natively into DB2. Finally, you will use Python to create a command-line application that produces some informative tables that you can access through a menu system.
Source: developerWorks : Linux : Technical library The Open Virtualization Format (OVF) is an open standard for packaging
and distributing virtual appliances (or software) that is to be run in virtual
machines. The standard describes an "open, secure, portable, efficient and
extensible format for the packaging and distribution of software to be run in
virtual machines"; the standard is designed so that it is not tied to any
particular hypervisor or processor architecture. In this article, the authors
describe the OVF standard and the OVF Toolkit developed by IBM.
Source: developerWorks : Linux : Technical library In many parts of the world, the power grid is shoddy, computers are
scarce, and connectivity is even rarer. Thus, as with many other modern
practices and technologies, populations are increasingly split into the
"computing haves" and the "computing have-nots." But many are addressing the
divide. SolarNetOne is a turnkey Internet hotspot -- power, computers, and
satellite uplink -- that you can install virtually anywhere, for less
than the cost of a subcompact car.
Source: developerWorks : Linux : Technical library This five-part series walks you through building a simple photo-sharing
Web site using Perl and Apache to access Amazon's Simple Storage Service (S3)
and SimpleDB. In this final installment, examine the full mod_perl site's
templates, including one for indexing, three for uploading (general, S3 forms,
and URL additions), one for image and comment browsing, and one to browse
comments recursively for an image (or threading down).
Source: developerWorks : Linux : Technical library This five-part series walks you through building a simple photo-sharing
Web site using Perl and Apache to access Amazon's Simple Storage Service (S3)
and SimpleDB. In this installment, examine the full mod_perl site's code base,
including how to configure the top level, what to do with the handlers, and
how to set up external dependencies.
Source: developerWorks : Linux : Technical library This five-part series walks you through building a simple photo-sharing
Web site using Perl and Apache to access Amazon's Simple Storage Service (S3)
and SimpleDB. In this installment, follow your site's interaction with
SimpleDB by learning how the URL creates a SimpleDB record for the uploaded
file. Also learn how to create, edit, and delete comments as SimpleDB records
on a photo for a particular user.
Source: developerWorks : Open source : Technical library This article is the second in a two-part series on developing
browser-based applications for iPhone and Android. In Part 1, we introduced
WebKit, the browser engine at the heart of the browser in iPhone and Android.
In this article, we dig deeper by building a network management application
which runs on both the iPhone and Android browsers. The application
demonstrates both browser-local SQL storage as well as Ajax, key technologies
that enable a rich application experience from within the mobile browser.
Additionally, the application leverages the popular jQuery JavaScript
library.
Source: developerWorks : Open source : Technical library Learn how to access the features of the Twitter API using the CPAN Net::Twitter module. You'll also see some solid business uses for Twitter, including automated posting and analyzing Twitter search results.
Source: developerWorks : Linux : Technical library KDE 4 includes many exciting new technologies, including Plasma, a
feature that forms the desktop shell of KDE 4. See how to write simple
Plasma applets (known as "plasmoids") to greatly improve the
desktop experience and how to turn a plasmoid into a simple
memory monitor.
Source: developerWorks : Linux : Technical library The Blue Gene/L supercomputer provides scientists with the cutting-edge
computing power and complex data-visualization tools they need to stay at the
forefront of their disciplines. Learn how this technology lets computational
molecular biologists create protein folding and misfolding simulations to
better understand these complex molecules.
Source: developerWorks : Linux : Technical library One of the most important modern innovations of Linux is its
transformation into a hypervisor (or, an operating system for other operating
systems). A number of hypervisor solutions have appeared that use Linux as the
core. This article explores the ideas behind the hypervisor and two particular
hypervisors that use Linux as the platform (KVM and Lguest).
Source: developerWorks : Linux : Technical library Green IT is one of the hottest of today's technology trends, and the
GNU/Linux community has risen to the challenge. Along with several corporate
partners, the GNU/Linux operating system provides solutions for dealing with
power consumption, carbon emissions, and e-waste.
Source: developerWorks : Linux : Technical library Many tools are available for programming various versions of ARM cores,
but one particularly popular set is the GNU ARM toolchain. Learn more about
embedded development using the ARM core, as well as how to install the GNU
tools and begin using them.
Source: developerWorks : Open source : Technical library Get to know the work-distibution system Gearman, and distribute the
workload of applications written in PHP, C, Ruby, or any other supported
language.
Source: developerWorks : Open source : Technical library The IBM Corporate Service Corps (CSC) is a
leadership development program that brings in-depth business and IT consulting support
to organizations in developing countries that are working on core societal
challenges. This is the story of one CSC project, the impact it had on a
university in East Africa, and the impact it had on the team members who
participated.
Source: developerWorks : Open source : Technical library For collecting data from Web pages, the mechanize library automates
scraping and interaction with Web sites. Mechanize lets you fill in forms and
set and save cookies, and it offers miscellaneous other tools to make a Python
script look like a genuine Web browser to an interactive Web site. A
frequently used companion tool called Beautiful Soup helps a Python program
makes sense of the messy "almost-HTML" that Web sites tend to
contain.
Source: developerWorks : Open source : Technical library The Metro Web service stack provides a comprehensive solution for accessing and implementing Web services. It's based on the reference implementations of the JAXB 2.x and JAX-WS 2.x Java standards, with added components to support WS-* SOAP extension technologies and actual Web service deployment. This article continues Dennis Sosnoski's Java Web services column series with a look at the basic principles of Metro client and server development.
Source: developerWorks : Linux : Technical library Before you take the Linux Professional Institute (LPI) exams, review
these developerWorks tutorials, designed as self-study guides for each topic
in the four exams.
Source: developerWorks : Linux : Technical library Vimscript is a mechanism for reshaping and extending the Vim editor.
Scripting allows you to create new tools, simplify common tasks, and even
redesign and replace existing editor features. This article (the first in a
series) introduces the fundamental components of the Vimscript programming
language: values, variables, expressions, statements, functions, and commands.
These features are demonstrated and explained through a series of simple
examples.
Source: developerWorks : Open source : Technical library This series explores the major types of cloud services
and related software that you can use to build Web-scale systems. Here in Part
1, learn how Infrastructure as a
Service (IaaS) clouds provide basic services you can use to deploy and
run your applications. The article also discusses how Eucalyptus can be used
as an infrastructure to create public or private clouds.
Source: developerWorks : Open source : Technical library Eclipse includes the ability to define and use code templates that increase your
productivity and make your code more predictable. This tip shows you how to edit the
existing code templates and define new ones. It includes examples of the built-in variables so you can see what they resolve to in the editor.
Source: developerWorks : Open source : Technical library Explore the concepts, design, and implementation details pertaining to interacting with social media sites using various APIs and XML-based data formats such as Really Simple Syndication (RSS), Atom, Facebook Markup Language (FBML), OpenSocial Markup Language (OSML), SOAP, and plain old XML (POX).
Source: developerWorks : Open source : Technical library Get to know the BIRT extension point model by creating a basic aggregation extension
in BIRT using the new V2.3+ extension model.
Source: developerWorks : Open source : Technical library Flickr isn't just for photo sharing and social networking; it's a
legitimate business tool. Learn how Perl programmers can use the CPAN Chart
modules to create charts and graphs, and the Flickr::Upload module to upload
the charts to Flickr.
Source: developerWorks : Linux : Technical library Modern operating system kernels provide the means for introspection, the
ability to peer dynamically within the kernel to understand its behaviors.
These behaviors can indicate problems in the kernel as well as performance
bottlenecks. With this knowledge, you can tune or modify the kernel to avoid
failure conditions. Discover an open source infrastructure called SystemTap
that provides this dynamic introspection for the Linux kernel.
Source: developerWorks : Linux : Technical library Linux continues to innovate in the area of file systems. It supports the
largest variety of file systems of any operating system. It also provides
cutting-edge file system technology. Two new file systems that are
making their way into Linux include the NiLFS(2) log-structured file system
and the exofs object-based storage system. Discover the purpose behind these
two new file systems and the advantages that they bring.
Source: developerWorks : Linux : Technical library Explore cloud computing from a Linux perspective and discover some of
the most innovative and popular Linux-based solutions -- with a particular
view toward environmentally beneficial options.
Source: developerWorks : Linux : Technical library Running out of Java heap isn't the only cause of a java.lang.OutOfMemoryError. If native memory runs out, OutOfMemoryErrors that your normal debugging techniques won't be able to solve can occur. This article explains what native memory is, how the Java runtime uses it, what running out of it looks like, and how to debug a native OutOfMemoryError on Windows and Linux. A companion article covers the same topics for AIX systems.
Source: developerWorks : Linux : Technical library Learn how to use the open source Clonezilla Live
cloning software to convert your physical server to a virtual one.
Specifically, see how to perform a physical-to-virtual system migration using
an image-based
method.
Source: developerWorks : Linux : Technical library This five-part series walks you through building a simple
photo-sharing Web site using Perl and Apache to access Amazon's Simple Storage
Service (S3) and SimpleDB. In this installment, learn how to upload a file
into S3 from a Web page through an HTML form to minimize the load on the
server, while maintaining a tight security policy.
Source: developerWorks : Open source : Technical library Java developers have a variety of choices when it comes to serializing and deserializing Extensible Markup Language (XML) objects. Simple is one such example, and it offers a number of advantages over its competitors. In this article, explore an introductory overview of how to use Simple within an XML communication system.
Source: developerWorks : Open source : Technical library With the Ganymede release, the Eclipse Update Manager has been replaced
by the Equinox/p2 provisioning framework. Author Nathan Good gives a high-level overview of the
framework, and discover its benefits for users and update site builders.
Source: developerWorks : Open source : Technical library Learn how to create a Twitter-enabled Web 2.0-style application using Django, jQuery,
and the python-twitter wrapper that you can easily use and plug in to your own Django
project. With this application, you'll be able to see recent tweets, post updates, and show
your friends and followers.
Source: developerWorks : Open source : Technical library This article describes the various refactorings available in Eclipse
Java Development Tools (JDT), including what each refactoring does, when to
use it, and how to use it. It also explores the refactoring scripts
functionality in Eclipse that allows library developers to share refactorings
of their code with their clients.
Source: developerWorks : Open source : Technical library Database security is the single biggest concern with today's Web-based
applications. Without control, you risk exposing sensitive information about
your company or, worse yet, your valuable customers. In this article, learn
about security measures you can take to protect your PostgreSQL
database.
Source: developerWorks : Open source : Technical library Cloud computing minimally requires two components: the client software that runs
on the portable device and the server software that normally runs on a network server.
This article proposes creating an Android-based service that emulates a network server
that enhances the value of the local machine in unique and unexpected ways. Put a tiny
cloud in your Android handset and experience the usefulness of a local Web server.
Source: developerWorks : Open source : Technical library Zorba is an open-source, robust, and standards-compliant XQuery processor. The Zorba extension in PHP provides an API to Zorba functions from within PHP, and thereby allows developers to add sophisticated XQuery processing to their PHP/XML applications. Examine the Zorba PHP API in detail, and how to use it for a variety of purposes.
Source: developerWorks : Open source : Technical library If you're considering using Spring or Hibernate with IBM WebSphere
Application Server, this article explains how to configure these frameworks
for various scenarios with WebSphere Application Server. This article is not
an exhaustive review of either framework, but a critical reference to help you
successfully implement such scenarios. (Updated for Spring Framework 2.5 and
WebSphere Application Server V7.)
Source: developerWorks : Web development : Technical library Learn how to use basic Dojo features combined with the
App Builder functions of the
IBM WebSphere sMash server. Create event-driven user interfaces without
hassling with JavaScript. Examples in this article showcase the Dojo TextBox,
CheckBox, RadioButton, Calendar, AutoComplete, ToolTip, AccordionContainer, and TabContainer features.
Source: developerWorks : Linux : Technical library Linux continues to invade the scalable computing space and, in
particular, the scalable storage space. A recent addition to Linux's
impressive selection of file systems is Ceph, a distributed file system that
incorporates replication and fault tolerance while maintaining POSIX
compatibility. Explore the architecture of Ceph and learn how it provides
fault tolerance and simplifies the management of massive amounts of
data.
Source: developerWorks : Open source : Technical library Git offers Linux developers a number of advantages over Subversion for
software version control, so developers working collaboratively owe it to
themselves get familiar with the basic concepts behind it. In
this installment, Ted dissects branching and merging in both Git and
Subversion, introduces "git bisect" for bisecting changes, and shows how to
resolve merge conflicts.
Source: developerWorks : Open source : Technical library Various businesses are increasingly using open source Java application
servers. There are lots of them available to choose from, but how do you make
the right decision? In this article, learn about
a performance benchmark method for Java application servers, especially Java EE
5 compliant servers, that will help you choose the right solution.
Source: developerWorks : Open source : Technical library Communities are the backbone of open source software development, and a
successful community is the de-facto metric for a successful project. Learn how to build a
successful open source community around a viable project.
Source: developerWorks : Open source : Technical library Find out how to turn a new, open source wireless device -- Sun's Small Programmable Object Technology (SPOT) -- into a highly visible indicator of the health of a Continuous Integration build. Craig Caulfield introduces you to Sun SPOTs and the SPOT SDK, then shows how to use SPOTs as an early-warning system for CruiseControl builds.
Source: developerWorks : Open source : Technical library As mobile platforms become increasingly sophisticated, the demand for
mobile computing will increase. In this "Introduction to the eSWT mobile extension" series, learn about the embedded
Standard Widget Toolkit (eSWT). You can use eSWT to develop native-looking
Java applications for a variety of mobile phones. In this article, learn how to
use more of the mobile controls: MobileShell, SortedList, HyperLink,
TextExtension, and TaskTip.
Source: developerWorks : Open source : Technical library Eclipse Galileo includes new features for applying patches, including the ability
to copy a patch to the clipboard and paste it directly into the Project Explorer.
This article introduces this and provides an overview of the method for
creating and applying patches, and includes an overview of the patch format used by Eclipse.
Source: developerWorks : Open source : Technical library As OpenAFS is now using Kerberos-5 for authentication instead
of its own built-in authenticating server, many AFS cells are
planning for migration from the old authentication style to the new Kerberos-5
mechanism. This article gives a comparative view of the old OpenAFS commands
and their respective new Kerberos-5 commands, specific to authenticating
entities. This comparison would help OpenAFS and IBM AFS systems
administrators relate the old and new commands in a 1:1 fashion
and become familiar with Kerberos-5 commands.
Source: developerWorks : Web development : Technical library Ext JS is an advanced JavaScript framework that not only supports and
simplifies the foundations of Asynchronous JavaScript and XML (Ajax)
development, but also maintains a large
toolkit of reusable UI components. In this article, get a tour of the new features and updates
to this framework, which currently stands at version 3.1.
|
