# File lib/ferret/index.rb, line 91
 91:     def initialize(options = {}, &block)
 92:       super()
 93: 
 94:       if options[:key]
 95:         @key = options[:key]
 96:         if @key.is_a?(Array)
 97:           @key.flatten.map {|k| k.to_s.intern}
 98:         end
 99:       else
100:         @key = nil
101:       end
102: 
103:       if (fi = options[:field_infos]).is_a?(String)
104:         options[:field_infos] = FieldInfos.load(fi)
105:       end
106: 
107:       @close_dir = options[:close_dir]
108:       if options[:dir].is_a?(String)
109:         options[:path] = options[:dir]
110:       end
111:       if options[:path]
112:         @close_dir = true
113:         begin
114:           @dir = FSDirectory.new(options[:path], options[:create])
115:         rescue IOError => io
116:           @dir = FSDirectory.new(options[:path],
117:                                  options[:create_if_missing] != false)
118:         end
119:       elsif options[:dir]
120:         @dir = options[:dir]
121:       else
122:         options[:create] = true # this should always be true for a new RAMDir
123:         @close_dir = true
124:         @dir = RAMDirectory.new
125:       end
126: 
127:       @dir.extend(MonitorMixin) unless @dir.kind_of? MonitorMixin
128:       options[:dir] = @dir
129:       options[:lock_retry_time]||= 2
130:       @options = options
131:       if (!@dir.exists?("segments")) || options[:create]
132:         IndexWriter.new(options).close
133:       end
134:       options[:analyzer]||= Ferret::Analysis::StandardAnalyzer.new
135:       if options[:use_typed_range_query].nil?
136:         options[:use_typed_range_query] = true
137:       end
138: 
139:       @searcher = nil
140:       @writer = nil
141:       @reader = nil
142: 
143:       @options.delete(:create) # only create the first time if at all
144:       @auto_flush = @options[:auto_flush] || false
145:       if (@options[:id_field].nil? and @key.is_a?(Symbol))
146:         @id_field = @key
147:       else
148:         @id_field = @options[:id_field] || :id
149:       end
150:       @default_field = (@options[:default_field]||= :*)
151:       @default_input_field = options[:default_input_field] || @id_field
152: 
153:       if @default_input_field.respond_to?(:intern)
154:         @default_input_field = @default_input_field.intern
155:       end
156:       @open = true
157:       @qp = nil
158:       if block
159:         yield self
160:         self.close
161:       end
162:     end