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Update the README for the ruby-bdb GitHub links and tidy the formatting up a bit

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Ash Moran 2011-08-25 05:52:26 +08:00 committed by Denis Knauf
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README.md
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@ -1,7 +1,16 @@
Description
===
Ruby bindings for Berkeley DB versions 4.2-4.8.
Ruby bindings for Berkeley DB versions 4.2-5.1.
One of the [ruby-bdb][ruby-bdb] projects. See also:
* [sbdb][sbdb] - A simpler, more Ruby-like API
* [tuple][tuple] - A binary array serialisation library used by bdb internally
[ruby-bdb]: http://github.com/ruby-bdb
[sbdb]: http://github.com/ruby-bdb/sbdb
[tuple]: http://github.com/ruby-bdb/tuple
Installation
============
@ -11,22 +20,23 @@ From Git
You can check out the latest source from git:
git clone git://github.com/DenisKnauf/bdb.git
git clone git://github.com/ruby-bdb/bdb.git
As a Gem
========
--------
At the moment this library is not available on Rubyforge. To install it as a
At the moment this library is not available on RubyForge. To install it as a
gem, do the following:
sudo gem install dk-bdb
[sudo] gem install bdb
For Berkeley DB v4.7 installed from MacPorts do the following:
sudo env ARCHFLAGS="-arch i386" gem install dk-bdb
[sudo] env ARCHFLAGS="-arch i386" gem install bdb
This assumes you're on OS X and BerkeleyDB wasn't compiled as a universal binary.
Sample Usage
============
@ -51,21 +61,19 @@ Sample Usage
db.close(0)
env.close
API
===
This interface is most closely based on the DB4 C api and tries to maintain close
interface proximity.
[That API is published by Oracle](http://www.oracle.com/technology/documentation/berkeley-db/db/api_reference/C/frame_main.html).
interface proximity. [That API is published by Oracle][oracle-api].
[oracle-api]: http://www.oracle.com/technology/documentation/berkeley-db/db/api_reference/C/frame_main.html
All function arguments systematically omit the leading DB handles and TXN handles.
A few calls omit the flags parameter when the documentation indicates that no
flag values are used - cursor.close is one.
Alternative API
---------------
You can use [SBDB](http://github.com/DenisKnauf/sbdb), too. It is easier to use, but base on this library.
Notes
=====
@ -80,9 +88,11 @@ flawlessly.
The authors have put all possible caution into ensuring that DB and Ruby cooperate.
The memory access was one aspect carefully considered. Since Ruby copies
when doing String#new, all key/data retrieval from DB is done with a 0 flag,
meaning that DB will be responsible. See [*this* news group posting](http://groups.google.com/group/comp.databases.berkeley-db/browse_frm/thread/4f70a9999b64ce6a/c06b94692e3cbc41?tvc=1&q=dbt+malloc#c06b94692e3cbc41)
meaning that DB will be responsible. See [*this* news group posting][newsgroup-post]
about the effect of that.
[newsgroup-post]: http://groups.google.com/group/comp.databases.berkeley-db/browse_frm/thread/4f70a9999b64ce6a/c06b94692e3cbc41?tvc=1&q=dbt+malloc#c06b94692e3cbc41
The only other design consideration of consequence was associate. The prior
version used a Ruby thread local variable and kept track of the current
database in use. The authors decided to take a simpler approach since Ruby is green