mahlon@martini.nu
ceb92fad16
- Add anonymous structs for settings and state to the internal db
instance struct.
- Allow tweaking the max_readers setting on db open.
- Allow altering database sizing/geometry values.
- Start sketching out some transaction re-entrancy.
- Refactor initialization slightly, just use the db struct
instead of additional unnecessary vars.
FossilOrigin-Name: 513f02946f7dc39001c402c1adf0697bb2852ba867685b35adbccaaaf43c6e15
94 lines
1.9 KiB
Ruby
94 lines
1.9 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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### FIXME: document all options!
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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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### 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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# Allow for some common nomenclature.
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alias_method :namespace, :collection
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### Return a hash of various metadata for the current database.
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###
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def statistics
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raw = self.raw_stats
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# Place build options in their own hash.
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#
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build_opts = raw.delete( :build_options ).split.each_with_object( {} ) do |opt, acc|
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key, val = opt.split( '=' )
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acc[ key.to_sym ] = Integer( val ) rescue val
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end
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stats = {
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build: {
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compiler: raw.delete( :build_compiler ),
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flags: raw.delete( :build_flags ),
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options: build_opts,
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target: raw.delete( :build_target )
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}
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}
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stats.merge!( raw )
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return stats
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end
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end # class MDBX::Database
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