A Redleaf::Store that uses Redland’s ‘hashes’ store. This store “provides indexed storage using Redland Triple stores to store various combinations of subject, predicate and object for faster access.“

This store comes in two flavors: the in-memory store, and bdb file storage.

Subversion Id

 $Id$

Authors

• Michael Granger
• Mahlon E. Smith

Copyright © 2008-2009, Michael Granger All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
• Neither the name of the author/s, nor the names of the project’s contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    # File lib/redleaf/store/hashes.rb, line 54
54:     def self::load( path, options={} )
55:         options.merge!( :new => false )
56:         return new( path, options )
57:     end

    # File lib/redleaf/store/hashes.rb, line 92
92:     def initialize( name=nil, options={} )
93:         name, opts = self.class.normalize_options( name, options )
94:         opthash = DEFAULT_OPTIONS.merge( opts )
95: 
96:         @hash_type = opthash[:hash_type]
97: 
98:         return super( name.to_s, opthash )
99:     end

    # File lib/redleaf/store/hashes.rb, line 62
62:     def self::normalize_options( name=nil, options={} )
63:         if name.is_a?( Hash )
64:             options.merge!( name )
65:             name = nil
66:         end
67: 
68:         if name.nil?
69:             raise Redleaf::Error, "You must specify a name argument for the bdb hash type." if
70:                 options[:hash_type] == :bdb
71:             options[:hash_type] = :memory
72: 
73:         elsif options[:hash_type] != :memory
74:             path = Pathname.new( options[:dir] || '.' ) + Pathname.new( name )
75: 
76:             options[:dir] = path.dirname.to_s
77:             options[:hash_type] = :bdb
78:             name = path.basename.to_s
79:         end
80: 
81:         Redleaf.logger.debug "Constructing a %p with name = %p, options = %p" % 
82:             [ self.name, name, options ]
83:         return name, options
84:     end

     # File lib/redleaf/store/hashes.rb, line 111
111:     def persistent?
112:         return self.hash_type == :bdb
113:     end