Add missing javadocs.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1462009 13f79535-47bb-0310-9956-ffa450edef68
2013-03-28 09:37:47 +00:00 · 2013-03-28 09:37:47 +00:00 · 6448dce4ea
parent 4f117dee40
commit 6448dce4ea
1 changed files with 3 additions and 0 deletions
--- a/lucene/core/src/java/org/apache/lucene/index/MergePolicy.java
+++ b/lucene/core/src/java/org/apache/lucene/index/MergePolicy.java
@ -62,6 +62,9 @@ public abstract class MergePolicy implements java.io.Closeable, Cloneable {

  /** A map of doc IDs. */
  public static abstract class DocMap {
+    /** Sole constructor, typically invoked from sub-classes constructors. */
+    protected DocMap() {}
+
    /** Return the new doc ID according to its old value. */
    public abstract int map(int old);