added thinking_sphinx plugin for fulltext search on nodes and heads

1 files changed, 147 insertions, 0 deletions

diff --git a/vendor/plugins/thinking-sphinx/lib/thinking_sphinx/collection.rb b/vendor/plugins/thinking-sphinx/lib/thinking_sphinx/collection.rb
new file mode 100644
index 0000000..406c2ae
--- /dev/null
+++ b/vendor/plugins/thinking-sphinx/lib/thinking_sphinx/collection.rb
@@ -0,0 +1,147 @@
+module ThinkingSphinx
+  class Collection < ::Array
+    attr_reader :total_entries, :total_pages, :current_page, :per_page
+    attr_accessor :results
+
+    # Compatibility with older versions of will_paginate
+    alias_method :page_count, :total_pages
+    
+    def initialize(page, per_page, entries, total_entries)
+      @current_page, @per_page, @total_entries = page, per_page, total_entries
+      
+      @total_pages = (entries / @per_page.to_f).ceil
+    end
+    
+    def self.ids_from_results(results, page, limit, options)
+      collection = self.new(page, limit,
+        results[:total] || 0, results[:total_found] || 0
+      )
+      collection.results = results
+      collection.replace results[:matches].collect { |match|
+        match[:attributes]["sphinx_internal_id"]
+      }
+      return collection
+    end
+    
+    def self.create_from_results(results, page, limit, options)
+      collection = self.new(page, limit,
+        results[:total] || 0, results[:total_found] || 0
+      )
+      collection.results = results
+      collection.replace instances_from_matches(results[:matches], options)
+      return collection
+    end
+    
+    def self.instances_from_matches(matches, options = {})
+      if klass = options[:class]
+        instances_from_class klass, matches, options
+      else
+        instances_from_classes matches, options
+      end
+    end
+    
+    def self.instances_from_class(klass, matches, options = {})
+      index_options = klass.sphinx_index_options
+
+      ids = matches.collect { |match| match[:attributes]["sphinx_internal_id"] }
+      instances = ids.length > 0 ? klass.find(
+        :all,
+        :conditions => {klass.primary_key.to_sym => ids},
+        :include    => (options[:include] || index_options[:include]),
+        :select     => (options[:select]  || index_options[:select]),
+        :order      => (options[:sql_order] || index_options[:sql_order])
+      ) : []
+
+      # Raise an exception if we find records in Sphinx but not in the DB, so
+      # the search method can retry without them. See 
+      # ThinkingSphinx::Search.retry_search_on_stale_index.
+      if options[:raise_on_stale] && instances.length < ids.length
+        stale_ids = ids - instances.map {|i| i.id }
+        raise StaleIdsException, stale_ids
+      end
+
+      # if the user has specified an SQL order, return the collection
+      # without rearranging it into the Sphinx order
+      return instances if options[:sql_order]
+
+      ids.collect { |obj_id|
+        instances.detect { |obj| obj.id == obj_id }
+      }
+    end
+    
+    # Group results by class and call #find(:all) once for each group to reduce
+    # the number of #find's in multi-model searches.
+    # 
+    def self.instances_from_classes(matches, options = {})
+      groups = matches.group_by { |match| match[:attributes]["class_crc"] }
+      groups.each do |crc, group|
+        group.replace(
+          instances_from_class(class_from_crc(crc), group, options)
+        )
+      end
+      
+      matches.collect do |match|
+        groups.detect { |crc, group|
+          crc == match[:attributes]["class_crc"]
+        }[1].detect { |obj|
+          obj.id == match[:attributes]["sphinx_internal_id"]
+        }
+      end
+    end
+    
+    def self.class_from_crc(crc)
+      @@models_by_crc ||= ThinkingSphinx.indexed_models.inject({}) do |hash, model|
+        hash[model.constantize.to_crc32] = model
+        model.constantize.subclasses.each { |subclass|
+          hash[subclass.to_crc32] = subclass.name
+        }
+        hash
+      end
+      @@models_by_crc[crc].constantize
+    end
+    
+    def previous_page
+      current_page > 1 ? (current_page - 1) : nil
+    end
+    
+    def next_page
+      current_page < total_pages ? (current_page + 1): nil
+    end
+    
+    def offset
+      (current_page - 1) * @per_page
+    end
+    
+    def method_missing(method, *args, &block)
+      super unless method.to_s[/^each_with_.*/]
+      
+      each_with_attribute method.to_s.gsub(/^each_with_/, ''), &block
+    end
+    
+    def each_with_groupby_and_count(&block)
+      results[:matches].each_with_index do |match, index|
+        yield self[index], match[:attributes]["@groupby"], match[:attributes]["@count"]
+      end
+    end
+    
+    def each_with_attribute(attribute, &block)
+      results[:matches].each_with_index do |match, index|
+        yield self[index], (match[:attributes][attribute] || match[:attributes]["@#{attribute}"])
+      end
+    end
+    
+    def each_with_weighting(&block)
+      results[:matches].each_with_index do |match, index|
+        yield self[index], match[:weight]
+      end
+    end
+    
+    def inject_with_groupby_and_count(initial = nil, &block)
+      index = -1
+      results[:matches].inject(initial) do |memo, match|
+        index += 1
+        yield memo, self[index], match[:attributes]["@groupby"], match[:attributes]["@count"]
+      end
+    end
+  end
+end