lib/xapian_db/config.rb in xapian_db-1.2.2 vs lib/xapian_db/config.rb in xapian_db-1.2.2.1

@@ -91,12 +91,19 @@
 
     # Set the index writer
     # @param [Symbol] type The writer type; the following adapters are available:
     #   - :direct ({XapianDb::IndexWriters::DirectWriter})
     #   - :beanstalk ({XapianDb::IndexWriters::BeanstalkWriter})
+    #   - :resque ({XapianDb::IndexWriters::ResqueWriter})
     def writer(type)
       # We try to guess the writer name
-      @_writer = XapianDb::IndexWriters.const_get("#{camelize(type.to_s)}Writer")
+      begin
+        require File.dirname(__FILE__) + "/index_writers/#{type}_writer"
+        @_writer = XapianDb::IndexWriters.const_get("#{camelize(type.to_s)}Writer")
+      rescue LoadError
+        puts "XapianDb: cannot load #{type} writer; see README for supported writers and how to install neccessary queue infrastructure"
+        raise
+      end
     end
 
     # Set the url and port of the beanstalk daemon
     # @param [Symbol] url The url of the beanstalk daemon; defaults to localhost:11300
     def beanstalk_daemon_url(url)