Module: AssociationItem
- Extended by:
- Object::Entity
- Defined in:
- lib/rbbt/association/item.rb
Class Method Summary collapse
- ._select_match(orig, elem) ⇒ Object
- .adjacency(pairs, key_field = nil, &block) ⇒ Object
- .incidence(pairs, key_field = nil, &block) ⇒ Object
- .select(list, method = nil, &block) ⇒ Object
Class Method Details
._select_match(orig, elem) ⇒ Object
170 171 172 173 174 175 176 177 178 179 180 181 |
# File 'lib/rbbt/association/item.rb', line 170 def self._select_match(orig, elem) if Array === orig and Array === elem (orig & elem).any? elsif Array === orig orig.include? elem elsif Array === elem elem.include? orig else elem === orif end false end |
.adjacency(pairs, key_field = nil, &block) ⇒ Object
158 159 160 161 162 163 164 165 166 167 168 |
# File 'lib/rbbt/association/item.rb', line 158 def self.adjacency(pairs, key_field = nil, &block) incidence = incidence(pairs, key_field, &block) targets = incidence.fields adjacency = TSV.setup({}, :key_field => incidence.key_field, :fields => ["Target"], :type => :double) TSV.traverse incidence, :into => adjacency, :unnamed => true do |k,values| target_values = targets.zip(values).reject{|t,v| v.nil? }.collect{|t,v| [t,v]} next if target_values.empty? [k, Misc.zip_fields(target_values)] end end |
.incidence(pairs, key_field = nil, &block) ⇒ Object
127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 |
# File 'lib/rbbt/association/item.rb', line 127 def self.incidence(pairs, key_field = nil, &block) matrix = {} targets = [] sources = [] matches = {} pairs.inject([]){|acc,m| acc << m; acc << m.invert if m.respond_to?(:undirected) and m.undirected; acc }.each do |p| s, sep, t = p.partition "~" sources << s targets << t if block_given? matches[s] ||= Hash.new{nil} value = block.call p matches[s][t] = value unless value.nil? or (mv = matches[s][t] and value > mv) else matches[s] ||= Hash.new{false} matches[s][t] ||= true end end sources.uniq! targets = targets.uniq.sort matches.each do |s,hash| matrix[s] = hash.values_at(*targets) end defined?(TSV)? TSV.setup(matrix, :key_field => (key_field || "Source") , :fields => targets, :type => :list) : matrix end |
.select(list, method = nil, &block) ⇒ Object
183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 |
# File 'lib/rbbt/association/item.rb', line 183 def self.select(list, method = nil, &block) if method and method.any? list.select do |item| method.collect do |key,value| case key when :target _select_match item.target, value when :source _select_match item.source, value else orig = item.info[key] orig = orig.split(";;") if String orig _select_match orig, value end end end else list.select(&block) end end |