X-Git-Url: http://git.nguyen.vg/gitweb/?a=blobdiff_plain;f=TextCollection.h;h=37d5cb5ab37edb66a39e5ed8c4a36026b322cc8c;hb=7eaf8bbcb18ab4a481905d219ab0b9e8286c75b2;hp=e7f0d4bb17de878d0d028c29d62b5b41ae50bad7;hpb=ccc18959e93d8986c0ce81209865a0a2b5f42be6;p=SXSI%2FTextCollection.git

diff --git a/TextCollection.h b/TextCollection.h
index e7f0d4b..37d5cb5 100644
--- a/TextCollection.h
+++ b/TextCollection.h
@@ -86,7 +86,13 @@ namespace SXSI
          * New texts can not be inserted after this operation.
          */
         virtual void MakeStatic() = 0;
-        
+	
+	/**
+	   tests if the string pointed to by DocId is empty
+	 */
+	
+	virtual bool EmptyText(DocId) const = 0;
+
         /**
          * Displaying content
          *
@@ -99,13 +105,13 @@ namespace SXSI
          *
          * Note: Parameters i and j are text positions inside the k'th text.
          */
-        virtual uchar* GetText(DocId, TextPosition, TextPosition) const = 0;
+//        virtual uchar* GetText(DocId, TextPosition, TextPosition) const = 0;
         /**
          * Returns backwards (reverse) iterator to the end of i'th text
          * 
          * Note: Do we need this?
          * Forward iterator would be really in-efficient compared to
-         * getText(k) and getText(k, i, j).
+         * getText(k).
          *
          * TODO Define and implement const_reverse_iterator.
          */
@@ -126,8 +132,12 @@ namespace SXSI
         virtual bool IsLessThan(uchar const *) const = 0;
 
         /**
-         * Counting queries 
-         * 
+         * Counting queries
+         * Result is the number of occurrences.
+         */
+        virtual ulong Count(uchar const *) const = 0;
+        /**
+         * More counting queries
          * Result is the number of documents.
          */
         virtual unsigned CountPrefix(uchar const *) const = 0;