From 9b0986ae373b8c996d77a8caf987cdaf9806e57d Mon Sep 17 00:00:00 2001
From: Otis Gospodnetic <otis@apache.org>
Date: Thu, 11 Jan 2007 10:53:25 +0000
Subject: [PATCH] - Added isOptimized() to IndexReader

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@495190 13f79535-47bb-0310-9956-ffa450edef68
---
 CHANGES.txt                                       | 3 +++
 src/java/org/apache/lucene/index/IndexReader.java | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/CHANGES.txt b/CHANGES.txt
index bcf8102585b..a98a474846e 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -174,6 +174,9 @@ API Changes
     setters for both the default Resolution, and per-field Resolution.
     For backwards compatibility, DateField is still used if no Resolutions
     are specified. (Michael Busch via Chris Hostetter)
+
+15. Added isOptimized() method to IndexReader.
+    (Otis Gospodnetic)
     
 Bug fixes
 
diff --git a/src/java/org/apache/lucene/index/IndexReader.java b/src/java/org/apache/lucene/index/IndexReader.java
index 1a24696cd21..4e2092aba51 100644
--- a/src/java/org/apache/lucene/index/IndexReader.java
+++ b/src/java/org/apache/lucene/index/IndexReader.java
@@ -277,6 +277,14 @@ public abstract class IndexReader {
     return SegmentInfos.readCurrentVersion(directory) == segmentInfos.getVersion();
   }
 
+  /**
+   * Checks is the index is optimized (if it has a single segment and no deletions)
+   * @return <code>true</code> if the index is optimized; <code>false</code> otherwise
+   */
+  public boolean isOptimized() {
+      return segmentInfos.size() == 1 && hasDeletions() == false;
+  }
+
   /**
    *  Return an array of term frequency vectors for the specified document.
    *  The array contains a vector for each vectorized field in the document.