Fixed a bug in IndexReader.lastModified().

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@149833 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -85,7 +85,10 @@ $Id$
      need to be reconstructed once per day. (cutting)
 
  15. Added a new IndexWriter method, getAnalyzer().  This returns the
-     analyzer used when adding documents to this index.
+     analyzer used when adding documents to this index. (cutting)
+
+ 16. Fixed a bug with IndexReader.lastModified().  Before, document
+     deletion did not update this.  Now it does.  (cutting)
 
 
 1.2 RC6

src/java/org/apache/lucene/index/SegmentReader.java

@@ -121,6 +121,7 @@ final class SegmentReader extends IndexReader {
 	    public Object doBody() throws IOException {
 	      deletedDocs.write(directory, segment + ".tmp");
 	      directory.renameFile(segment + ".tmp", segment + ".del");
+              directory.touchFile("segments");
 	      return null;
 	    }
 	  }.run();

src/java/org/apache/lucene/store/Directory.java

@@ -82,6 +82,10 @@ abstract public class Directory {
   abstract public long fileModified(String name)
        throws IOException, SecurityException;
 
+  /** Set the modified time of an existing file to now. */
+  abstract public void touchFile(String name)
+       throws IOException, SecurityException;
+
   /** Removes an existing file in the directory. */
   abstract public void deleteFile(String name)
        throws IOException, SecurityException;

src/java/org/apache/lucene/store/FSDirectory.java

@@ -175,6 +175,12 @@ final public class FSDirectory extends Directory {
     return file.lastModified();
   }
 
+  /** Set the modified time of an existing file to now. */
+  public void touchFile(String name) throws IOException, SecurityException {
+    File file = new File(directory, name);
+    file.setLastModified(System.currentTimeMillis());
+  }
+
   /** Returns the length in bytes of a file in the directory. */
   public final long fileLength(String name) throws IOException {
     File file = new File(directory, name);

src/java/org/apache/lucene/store/RAMDirectory.java

@@ -93,6 +93,12 @@ final public class RAMDirectory extends Directory {
     return file.lastModified;
   }
 
+  /** Set the modified time of an existing file to now. */
+  public void touchFile(String name) throws IOException, SecurityException {
+    RAMFile file = (RAMFile)files.get(name);
+    file.lastModified = System.currentTimeMillis();
+  }
+
   /** Returns the length in bytes of a file in the directory. */
   public final long fileLength(String name) {
     RAMFile file = (RAMFile)files.get(name);