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Source: developerWorks : Open source : Technical library NoSQL datastores like Bigtable and CouchDB are moving from margin to center in the Web 2.0 era because they solve the problem of scalability, and they solve it on a massive scale. Google and Facebook are just two of the big names that have bought in to NoSQL, and we're in early days yet. Schemaless datastores are fundamentally different from traditional relational databases, but leveraging them is easier than you might think, especially if you start with a domain model, rather than a relational one.
Source: developerWorks : Open source : Technical library Google provides an interesting and easy-to-use open source alternative for developing unit tests to validate C/C++ based software. This article introduces readers to some of the more useful features of the Google C++ Testing Framework and is based on version 1.4 of the release.
Source: developerWorks : Open source : Technical library If you want your teams to collaborate by using IBM Rational Team Concert and Jazz technology, yet you are reluctant to give up the mainframe software configuration management (SCM) system that you use, this article is for you. It explains how you can jump start your development teams on Rational Team Concert while enabling governance of your existing mainframe SCM system.
Source: developerWorks : Open source : Technical library Google Base allows users to store any type of content online in Google's
version of a massive online database. Web application developers are able to
access and search this content through the Google Base Data API. This article
introduces the Google Base Data API and demonstrates it in the context of a PHP
application, explaining how to use SimpleXML and the Zend_Gdata module to search, retrieve, add, and edit different types of data on Google Base.
Source: developerWorks : Open source : Technical library One of Linux's strengths is its cross-platform nature: you can run it on
x86, x86-64, SPARC, PowerPC, and many other central processing units (CPUs).
This wealth of hardware choices poses a challenge for software developers,
though. Ensuring that software compiles, and runs correctly, on all platforms
can be difficult. The use of the QEMU package can help ease this burden. QEMU
is a machine emulator that supports a wide range of CPUs, so you can run
PowerPC software on an x86 computer, x86-64 software on an SPARC computer, or
what have you. This facility is particularly useful for programmers who need
to test software's endianness compatibility or check other CPU-specific
features. QEMU also enables you to run different operating systems entirely,
so that you can test a program's ability to compile and run under FreeBSD,
Solaris, or even Microsoft Windows without shutting down Linux.
Source: developerWorks : Open source : Technical library Meet OpenLaszlo, an open source platform, released under the Common
Public License (CPL), for the development and delivery of rich Internet
applications (RIAs). OpenLaszlo is based on LZX, which is an object-oriented
language utilizing XML and JavaScript. Rich-client applications written with
OpenLaszlo run across browsers and across platforms. In this article, we
look at the architecture and APIs of OpenLaszlo with several examples. We
also cover the basic debugging tools.
Source: developerWorks : Open source : Technical library Are you an experienced PHP developer who needs to learn Python? This
article approaches the world of Python development from a PHP developer's
perspective, translating familiar PHP concepts, such as variables, lists, and
functions, into their Python equivalents.
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: MultiPageDialog, QueryDialog, TimedMessageBox, MobileDevice, Screen,
and Input.
Source: developerWorks : Open source : Technical library Hardware management using the Common Information Model standard often
means that the management application must be capable of listening to and handling
the indications that occur at the hardware level.
To test the indication listener component of the
management application when the planned system hardware is not
available during development, you will need dummy indications.
This article explains how
to generate dummy indications on OpenPegasus CIMOM (Common Information Model
Object Manager) using a provider shipped with the OpenPegasus source
code.
Source: developerWorks : Open source : Technical library Check out Global Innovation Outlooks' first-of-a-kind roundtable
in Second Life, diving into conducting a collaborative, open innovation
meeting in Second Life. The author also discusses tools to use for brainstorming and best
practices to consider during planning.
Source: developerWorks : Open source : Technical library Data mining is a collective term for dozens of techniques to glean
information from data and turn it into meaningful trends and rules to improve
your understanding of the data. In this second article of the series, we'll
discuss two common data mining methods -- classification and clustering -- which
can be used to do more powerful analysis on your data.
Source: developerWorks : Open source : Technical library Understand the tradeoffs in content currency as you practice including links to content, copies of content, or both.
Investigate techniques that will infuse new content into a solution information center after you deliver it to its audience.
For example, you can provide a link that launches a search of another web site's contents to find the latest documents,
You can include RSS feeds that deliver updated content to keep your solution information center fresh.
Source: developerWorks : Open source : Technical library This series explores the major types of cloud services and related
software you can use to build Web-scale systems. In this article, learn
about AppScale and Platform-as-a-Service (PaaS)
cloud computing. Explore the features and architecture of
this virtual infrastructure. It's a great way to test your
Google App Engine applications on your local resources or virtualized cloud
infrastructures, such as Amazon EC2 or Eucalyptus.
Source: developerWorks : Open source : Technical library Get introduced to Apache Click, a Java Platform, Enterprise
Edition (Java EE) Web application framework that enables the creation of Web
applications without using Model-View-Controller (MVC) patterns or JavaServer
Pages (JSP). This article provides examples of displaying a simple Web page
and creating a Web form that submits data that is displayed on a different Web
page.
Source: developerWorks : Open source : Technical library With the increasing interest in Ruby on Rails from companies in the
enterprise world, some observers have posed questions about its suitability
when it comes to the demanding requirements in this arena. One issue that some
have called attention to is that ActiveRecord, Rails' Object-Relational Mapper
(ORM), doesn't use prepared statements--or at least it didn't until now. With
the latest release of DB2 on Rails, parameterized queries are automatically
available and bring with them important performance and security benefits to
Rails applications.
Source: developerWorks : Open source : Technical library The days of cowboy coding are long gone at most organizations, replaced
by a renewed interest in generating quality software. Continuous integration
(CI) testing is a vital component in the practice of agile programming
techniques that lead to high-quality software. Learn the theory and practice
of CI testing by exploring Buildbot, an open source CI system written in
Python.
Source: developerWorks : Open source : Technical library OpenID is a decentralized authentication protocol that makes it easier for users to access resources in your Java Web applications. In this first half of a two-part article, you'll learn about the OpenID Authentication Specification and walk through the steps of incorporating it into a sample Java application. Rather than implement the OpenID Authentication specification by hand, author J. Steven Perry uses the openid4java library and a popular OpenID provider, myOpenID, to create a safe and reliable registration process for a Java application written in Wicket.
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. SugarCRM has long had a very useful Web
Services framework, allowing applications to access the SugarCRM instance and work
with data on it. But new to SugarCRM 5.2 is a framework for accessing other
outside Web services from inside the application itself. SugarCRM 5.2 ships with a
LinkedIn connector by default that uses this framework. Thus, users of the
SugarCRM instance can check on the LinkedIn status of various companies, contacts,
and leads they might have. In this article, learn how the connectors framework
works in Sugar 5.2 by building an example connector that allows users to see any recent Google News items pertaining to companies in their SugarCRM instance.
Source: developerWorks : Open source : Technical library Learn how Perl programmers can use three of the CPAN S3 modules --
Net::Amazon::S3, Amazon::S3, and SOAP::Amazon::S3 -- to list, create, and
delete "buckets" (S3 data storage); to list, create, retrieve, and delete
items in a bucket; and to get an item's metadata.
Source: developerWorks : Open source : Technical library Map-based mashups abound these days. Mashups require services
that can be mashed up. Location-based mashups need services that
provide boundary information. With Web-based mapping providers, you can
easily create a map-based mashup with little or no capital investment. In
this article, learn how to create a KML boundary
service from an ESRI shapefile to be used in mashups.
Source: developerWorks : Open source : Technical library Master techniques for collecting and customizing reusable content for a solution information center that describes your IT project. Learn fast paths for capturing many documents at once for instant reuse.
Source: developerWorks : Open source : Technical library Recap and deliver your IT project experience for the benefit of clients, colleagues, and your own records.
Quickly and productively document the solution you've implemented. Aggregate, organize, and share presentations, demos, product documentation, feeds, code samples, and other information you've created or reused for delivery in an Eclipse-based information center.
Source: developerWorks : Open source : Technical library Part of the appeal of mobile applications is that you can take your application and its data with you wherever you go. One reality of mobile is, at times, a mobile device does not have a working connection to the Internet. This might seem to be an insurmountable problem for mobile Web applications. However, Web applications have evolved and become capable of working offline. In this article, you will learn how to offline-enable your mobile Web application and learn to detect when your application goes from offline to online and vice versa.
Source: developerWorks : Open source : Technical library In the first part of this five part series, you will tap into one of the most popular new technologies available to mobile Web applications: geolocation. High-end smartphones all have GPS built-in to them, and now you will learn how it can be used by a Web application. In this article you will learn how to use the various aspects of the geolocation standard and how to use it with some popular Web services to create an interesting mobile mashup.
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 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 : 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 The Predictive Model Markup Language (PMML) is the de facto standard
language used to represent predictive analytic models. It allows for predictive
solutions to be easily shared between PMML compliant applications. With predictive
analytics, the Petroleum and Chemical industries create solutions to predict machinery
break-down and ensure safety. PMML is supported by many of the top statistical tools. As a result, the process of putting a predictive
analytics model to work is straightforward since you can build it in one tool and
instantly deploy it in another. In a world in which sensors and data gathering are
becoming more and more pervasive, predictive analytics and standards such as PMML make
it possible for people to benefit from smart solutions that will truly revolutionize
their lives.
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