mahlon@martini.nu
5ed44e52fa
- Provide a method to reopen the database environment if closed. - Add #keys, which returns an array of keys for the current collection. - Finish collection/namespace implementation. - Add various aliases (collection->namespace, etc) - Add #clear, which destroys data for a the current collection. If called in the main db, destroys all. Don't close the environment after a #clear, just the dbi handle. - Various bugfixes. FossilOrigin-Name: 8b00d59e8c5269266f3c6c0d10056a1c0fe1bb583ffbe099a6ed0dac3baf3a66
68 lines
1.3 KiB
Ruby
68 lines
1.3 KiB
Ruby
# -*- ruby -*-
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# vim: set nosta noet ts=4 sw=4 ft=ruby:
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# encoding: utf-8
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require 'mdbx' unless defined?( MDBX )
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# TODO: rdoc
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#
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class MDBX::Database
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### Open an existing (or create a new) mdbx database at filesystem
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### +path+. In block form, the database is automatically closed.
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###
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### MDBX::Database.open( path ) -> db
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### MDBX::Database.open( path, options ) -> db
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### MDBX::Database.open( path, options ) do |db|
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### db[ 'key' ] #=> value
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### end
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###
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def self::open( *args, &block )
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db = new( *args )
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db.serializer = ->( v ) { Marshal.dump( v ) }
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db.deserializer = ->( v ) { Marshal.load( v ) }
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if block_given?
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begin
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yield db
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ensure
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db.close
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end
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end
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return db
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end
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# Only instantiate Database objects via #open.
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private_class_method :new
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# The options used to instantiate this database.
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attr_reader :options
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# The path on disk of the database.
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attr_reader :path
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# A Proc for automatically serializing values.
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attr_accessor :serializer
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# A Proc for automatically deserializing values.
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attr_accessor :deserializer
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# Allow for some common nomenclature.
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alias_method :namespace, :collection
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alias_method :reopen, :open
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### Switch to the top-level collection.
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###
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def main
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return self.collection( nil )
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end
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end # class MDBX::Database
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