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However all the above technologies are holder
technologies perhaps are “coming of age” and
became matured to the point of
recommendation. But definitely all these
technologies are still useful as OSGi works as
module system behind Eclipse, while Groovy is
continuously accepting by the developer with
its formal specification and continually improved
releases, GWT is already mature and stable,
and cloud computing is becoming more and
more famous in this growing marketplace.
On the other hand, JCR and cloud computing
are the least accepted of these technologies,
and vendors are trying to address that, with
competitions to spur awareness or active
community involvement.
Apache Jackrabbit 1.4 released
Apache Jackrabbit 1.4 is the latest and greatest
version of Content Repository for Java
Technology API (or JCR in short) conforming
that Apache Jackrabbit 1.4 provides the full open
source implementation of JCR
JCR is a standard API to access the content
repositories in a uniform manner and is specified
in JSR 170. A content repository is a hierarchical
representation storage media similar to an
advanced file system supporting different levels
of content structure and granularity. The API
provides various functionalities such as
browsing, modifying, and searching the content
in full text search in a content repository.
Standard allows advanced features like
versioning, observation, locking, and XA
transactions as optional.
Apache Jackrabbit provides one of the best JCR
implementations and was also used as the
reference implementation of JSR 170. Apache
Jackrabbit 1.4 is a stable and feature-rich
content repository aimed having a wide range
of content applications including Magnolia,
OpenKM, Hippo, and Mindquarry. Jackrabbit
provides implementation for all the mandatory
and optional JCR features as well as a number
of extensions and related JCR tools.
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Apache Jackrabbit is the biggest ever release having 220 new features, improvements and
bug fixes on the basis of feedback and
contributions from the user community.
Sun Microsystems has agreed to buy MySQL
AB for $1B
Sun Microsystems has acceded to buy MySQL
AB for $1B, by providing additional leverage in
the open source community and also allowing
access to MySQL to its larger corporations. The
grand question that arises is that: what does
this mean in the long term? Sun already offers
a small-scale database as compared to
compared to 'large offerings' like Oracle9 and
IMS. Is Sun considerably looking for an
additional revenue stream from MySQL AB's
customers, or shifting away from JavaDB/
Derby?
JVM Lies: The OutOfMemory Myth
The concept "JVM Lies: The OutOfMemory Myth,"
tells about the happening when a JVM throws
an OutOfMemoryError – the developers who
have encountered it have noticed, it seems like
it's out of memory, but it always doesn't look
like it, and throws more RAM at the JVM may
help, but that's the wrong solution.
Shades of HotJava: LoboBrowser, a web
browser in Java
JavaLobby have introduced a LoboBrowser, a
fully Java web browser. Although it is not
HotJava, yet it runs JavaScript if memory is
available while HotJava did not. It is big deal to
develop a workable and installable fully Java
based browser even if it can't render TSS very
well. It also includes a rendering engine, Corba
that can be used to watch DOM of a page even
after JavaScript has been run over it. Integration
into IDEs, can be seen to anyone. E.g providing
browser support without allowing explicit
browser tie-ins. |
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Mar 2008 | Java Jazz Up | 9 |
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