I am pleased to announce the 1.0a8 release of e4Graph, the seventh Alpha
WHAT IS IT:
e4Graph is a C++ library that allows programs to store graph-like data
persistently and to access and manipulate that data efficiently. With
e4Graph, you can arrange your data in the most natural form that
reflects the relationships between its parts, rather than having to
force it into a table-like format. The e4Graph library also allows you
to concentrate on the relationships you want to represent, and not on
how to store them in a database. You can modify data items, and add and
remove connections and relationships between pieces of data on the fly.
e4Graph allows you to represent an unlimited number of different
connections between pieces of data, and your program can selectively
manipulate the data according to the relationships it cares about, not
having to know about other connections represented in the data set. The
e4Graph package also provides bindings in several other languages,
currently Tcl, Python and Java, and allows input/output of object graphs
via an XML representation.
The e4Graph package is built on top of Metakit 18.104.22.168, and optionally
uses Tcl 8.4.4, Python 2.2.3, Java 1.1 or later, and Expat 1.95.5.
WHERE TO GET:
WHAT IS NEW:
Support for MacOS X 10.2 and several other platforms was added. Support
for Python 2.2 and later releases was added. The Java binding was
updated. The event mechanism was completely overhauled and support for
user defined events was added. The vertex caching mechanism was moved
from the Tcl binding to the core e4Graph library to enable other
language bindings to benefit from the increased performance afforded by
the cache. The interface between e4Graph and data base drivers was
formalized in preparation for supporting new data base drivers in
addition to Metakit. Additional work was done to support 64-bit systems
and very large storages; more work is needed. Support for SWIG was added
so new language bindings can be created with SWIG, in preparation for
incorporating Perl, PHP and Ruby bindings in the next release. Many bugs
Michael Krimerman contributed the Python binding. J.P. Fletcher helped
me get started with SWIG support. Daniel Steffen and Nicholas Brawn were
instrumental helping with MacOS X support. I wish to acknowledge support
from the HP test-drive facility and from the SourceForge compile farm.
Many people (too many to mention) contributed bug reports and bug fixes.
Geoff Shapiro and David Van Maren suggested many useful API changes.
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