The data computation layer of Java aims to reduce the coupling between data persistent layer and the application layer and shift the computational workload from them. In this survey, 5 data computation layers of Hibernate, esProc, SQL, iBATIS, and R language are tested and compared on the basis of the below metrics: maturity, low coupling, scripting, integration, UI friendliness, performance, complex computation, support for big data, non-database computation, cross-database computation, and convenience for debugging.
Big data will fall into the pitfall of failure. But why big data will fall into the pitfall of failure? It is because the current big data only provides the solution for data storage and query. It lacks a good solution for business analysis to enhance the competitiveness, which is the most crucial. How to avoid the pitfall?
OSCON 2013 (Open Source CONvention) is underway in Portland, Oregon. Even if you can't be there, you can still participate by watching the keynote sessions, which will be live-streamed on Wednesday, Thursday, and Friday. While all the keynotes are likely to be quite good (I found them to be so when I was at OSCON some years ago), several keynotes in particular stand out for me...
Our books are great. But don’t just trust us; here are some reviews from developers who have actually bought, read and loved the books. Trust them!
In the process of Java development, programmers may come across complex set operations and Java alone is not powerful enough to easily handle such problem. Dynamic calculation script is good solution. In this post, I'll introduce how to conduct such computation in a simple way.
How much code documentation is a symptom of bad coding (i.e. poor method or variables names, poor class or package structure, missing logging, etc)?
What should be in a source control commit message for a single file add?
In this article, based on chapter 8 of Redis in Action, author Josiah Carlson talks about Twitter user and status objects, which are the basis of almost all of the information in our application, and then deleting posts, which involves manipulating followers/following lists.
Community Leadership Summit 2013
As a developer, when you are building and/or designing a Java application;
the first (or one of the first) question you might ask is...
"What are the objects?"
This seems to be a very simple question. But it is not.
There probably is no single "right" answer to this question.
Nevertheless, careful consideration given to this question will contribute to
a good start to one's Java development...
When we started building our first Java application, at my company Amway Corp, many years ago;
we learned our first lesson.
In spite of all the formal training we received, in spite of all the literature at our disposal;
we still needed help with our Java development on a regular basis.
Where would this assistance come from?
At the time, we had no in-house Java subject-matter experts.
This brief blog entry explains the Mojarra bug triage process, and
shares some tips for maximizing the chances your bug will be quickly
fixed and find its way into a release.
What are the cost vs. benefits of creating interfaces and how should they be balanced?
Is it more secure to allow the browser to save a website password or prohibit the browser from saving the password?
Could java.util.concurrent.lock.Lock use a static list of all threads that have locks and ThreadLocal locks lists to know about all in use locks and then check for incorrect order when lock() is called.
A big part of the CMIS specification describes how the CMIS domain model is mapped to the bytes that are transferred. These mappings are called bindings. CMIS 1.0 defines two bindings, the Web Services binding and the AtomPub binding; and CMIS 1.1 adds a third, the Browser binding. In this article, based on chapter 11 of CMIS and Apache Chemistry in Action, the authors discuss Browser binding.
Expression Language (EL) was first introduced as part of JSTL 1.0, was then moved JSP 2.0 and was unified with JSF 1.2 in JSP 2.1. In Java EE 7, EL is a new separate JSR, JSR 341. Many new features are introduced in EL 3.0.
This blog shows how to use new following new features of EL 3.0:
Lambda expression (section 1.20 of EL 3.0 spec)
The new operator ; to separate...
So we thought we’d get to know more about the man behind the book itself!
Over the last few years we've been busily writing the latest and greatest version of Magnolia. After all of this focus on new and (we hope) great, it seemed like time to focuse on something old and great.
If you are old enough to remember the ZX Spectrum, the Commodore 64 or their various competitors, or if you like any kind of games, please keep on reading.
You might have heard of the qaop...