A little bit docu
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README
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README
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Bdb
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= Dependencies
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===
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== Bdb
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Your need first this library:
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Your need first this library:
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http://github.com/DenisKnauf/bdb
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http://github.com/DenisKnauf/bdb
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Download
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= Download
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========
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via git:
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via git:
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git clone git://github.com/DenisKnauf/sbdb.git
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git clone git://github.com/DenisKnauf/sbdb.git
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Installation
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= Installation
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============
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gem build sbdb.gemspec
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gem install sbdb-*.gem
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gem install sbdb-*.gem
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or:
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= Usage
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gem install sbdb --source http://github.com/DenisKnauf/sbdb/raw/master/sbdb-0.0.5.gem
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Documentation
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=============
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Doesn't exist yet.
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Usage
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=====
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First, open environment and database
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First, open environment and database
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@ -44,18 +34,18 @@ It works nearly like a Ruby-Hash:
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db.map {|k, v| [k, v].join ' => '} # => ["key => value"]
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db.map {|k, v| [k, v].join ' => '} # => ["key => value"]
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db.count # => 1
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db.count # => 1
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*SBDB::DB#each* uses a *SBDB::Cursor*:
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SBDB::DB#each uses a SBDB::Cursor:
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cursor = db.cursor
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cursor = db.cursor
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cursor.each {|k,v| puts "#{k}: ${v}" }
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cursor.each {|k,v| puts "#{k}: ${v}" }
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Don't forget to close everything, you opened!
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<strong>Don't forget to close everything, you've opened!</strong>
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cursor.close
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cursor.close
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db.close
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db.close
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env.close
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env.close
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But you can use a *lambda* to ensure to close everything:
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But you can use a <em>lambda</em> to ensure to close everything:
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SBDB::Env.new( 'newenv', SBDB::CREATE) do |env|
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SBDB::Env.new( 'newenv', SBDB::CREATE) do |env|
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env.open SBDB::Btree, 'newdb.db', 'mynewdb', SBDB::CREATE do |db|
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env.open SBDB::Btree, 'newdb.db', 'mynewdb', SBDB::CREATE do |db|
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@ -63,4 +53,4 @@ But you can use a *lambda* to ensure to close everything:
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end
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end
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end
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end
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*SBDB::DB#to_hash* creates a cursor and close it later.
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SBDB::DB#to_hash creates a cursor and close it later.
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@ -8,7 +8,11 @@ module SBDB
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INIT_LOG = Bdb::DB_INIT_LOG
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INIT_LOG = Bdb::DB_INIT_LOG
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INIT_MPOOL = Bdb::DB_INIT_MPOOL
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INIT_MPOOL = Bdb::DB_INIT_MPOOL
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# Environments are for storing one or more databases and are important
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# if you want to work with more than one process on one database.
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# You needn't use Environment, but it's usefull.
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class Environment
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class Environment
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# returns the Bdb-object.
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def bdb_object
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def bdb_object
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@env
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@env
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end
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end
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@ -31,6 +35,8 @@ module SBDB
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nil
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nil
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end
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end
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# Close the Environment.
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# First you should close all databases!
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def close
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def close
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@env.close
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@env.close
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end
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end
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@ -39,6 +45,8 @@ module SBDB
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alias open new
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alias open new
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end
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end
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# Opens a Database.
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# see SBDB::DB, SBDB::Btree, SBDB::Hash, SBDB::Recno, SBDB::Queue
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def open type, *p, &e
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def open type, *p, &e
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p[5] = self
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p[5] = self
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type.new *p, &e
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type.new *p, &e
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