Upgraded lucene version. Made changes for the results to take message time into consideration.

.gitignore

@@ -5,4 +5,4 @@ pom.xml
 /classes/
 .lein-deps-sum
 ignored_users
-/index/
+/index*/

project.clj

@@ -6,7 +6,7 @@
                   :releases false}}
   :dependencies [[org.clojure/clojure "1.2.1"]
                  [org.clojure/clojure-contrib "1.2.0"]
-                 [org.apache.lucene/lucene-core "3.1.0"]
-                 [org.apache.lucene/lucene-wordnet "3.1.0"]
-                 [org.apache.lucene/lucene-analyzers "3.1.0"]
+                 [org.apache.lucene/lucene-core "3.2.0"]
+                 [org.apache.lucene/lucene-wordnet "3.2.0"]
+                 [org.apache.lucene/lucene-analyzers "3.2.0"]
                  [org/pircbotx "1.3-SNAPSHOT"]])

src/irc_search_bot/lucene.clj

@@ -7,7 +7,7 @@
            [org.apache.lucene.index IndexWriter IndexWriterConfig IndexReader]
            [org.apache.lucene.search
             IndexSearcher ScoreDoc Query BooleanQuery TermQuery BooleanClause
-            BooleanClause$Occur Filter QueryWrapperFilter]
+            BooleanClause$Occur Filter QueryWrapperFilter Sort SortField]
            [org.apache.lucene.queryParser QueryParser]
            [org.apache.lucene.wordnet AnalyzerUtil])
   (:use [clojure.java.io :only (as-file)]))
@@ -46,7 +46,15 @@
     [query, nil]))
 
 (defn search [^IndexSearcher index-searcher ^Query query ^Filter filter ^Integer max-hits]
-  (let [top-docs (.search index-searcher query filter max-hits)]
+  (let [top-docs
+        (.search
+         index-searcher
+         query
+         filter
+         max-hits
+         (Sort.
+          (into-array
+           [SortField/FIELD_SCORE (SortField. "timestamp" SortField/LONG true)])))]
     (vector
      (.totalHits top-docs)
      (->>
@@ -98,7 +106,7 @@
 
 (defn add-document [^IndexWriter index-writer document]
   (.addDocument index-writer document))
-  
+
 (defn standard-analyzer []
   (StandardAnalyzer. *lucene-version*))