# File lib/ferret/index.rb, line 97
 97:     def initialize(options = {}, &block)
 98:       super()
 99: 
100:       if options[:key]
101:         @key = options[:key]
102:         if @key.is_a?(Array)
103:           @key.flatten.map {|k| k.to_s.intern}
104:         end
105:       else
106:         @key = nil
107:       end
108: 
109:       if (fi = options[:field_infos]).is_a?(String)
110:         options[:field_infos] = FieldInfos.load(fi)
111:       end
112: 
113:       @close_dir = options[:close_dir]
114:       if options[:dir].is_a?(String)
115:         options[:path] = options[:dir]
116:       end
117:       if options[:path]
118:         @close_dir = true
119:         begin
120:           @dir = FSDirectory.new(options[:path], options[:create])
121:         rescue IOError => io
122:           @dir = FSDirectory.new(options[:path],
123:                                  options[:create_if_missing] != false)
124:         end
125:       elsif options[:dir]
126:         @dir = options[:dir]
127:       else
128:         options[:create] = true # this should always be true for a new RAMDir
129:         @close_dir = true
130:         @dir = RAMDirectory.new
131:       end
132: 
133:       @dir.extend(MonitorMixin).extend(SynchroLockMixin)
134:       options[:dir] = @dir
135:       options[:lock_retry_time]||= 2
136:       @options = options
137:       if (!@dir.exists?("segments")) || options[:create]
138:         IndexWriter.new(options).close
139:       end
140:       options[:analyzer]||= Ferret::Analysis::StandardAnalyzer.new
141: 
142:       @searcher = nil
143:       @writer = nil
144:       @reader = nil
145: 
146:       @options.delete(:create) # only create the first time if at all
147:       @auto_flush = @options[:auto_flush] || false
148:       if (@options[:id_field].nil? and @key.is_a?(Symbol))
149:         @id_field = @key
150:       else
151:         @id_field = @options[:id_field] || :id
152:       end
153:       @default_field = (@options[:default_field]||= :*)
154:       @default_input_field = options[:default_input_field] || @id_field
155: 
156:       if @default_input_field.respond_to?(:intern)
157:         @default_input_field = @default_input_field.intern
158:       end
159:       @open = true
160:       @qp = nil
161:       if block
162:         yield self
163:         self.close
164:       end
165:     end