LUCENE-1367: add IndexCommit.isDeleted()

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@689791 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -122,6 +122,9 @@ API Changes
     3.0 the default will become true.  (Jason Rutherglen via Mike
     McCandless)
 
+19. LUCENE-1367: Add IndexCommit.isDeleted().  (Shalin Shekhar Mangar
+    via Mike McCandless)
+
 Bug fixes
     
  1. LUCENE-1134: Fixed BooleanQuery.rewrite to only optimize a single 

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

@@ -401,6 +401,9 @@ abstract class DirectoryIndexReader extends IndexReader {
     public long getGeneration() {
       return generation;
     }
+    public boolean isDeleted() {
+      return false;
+    }
   }
 
   /**

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

@@ -74,6 +74,10 @@ public abstract class IndexCommit implements IndexCommitPoint {
     throw new UnsupportedOperationException("This IndexCommit does not support this method.");
   }
 
+  public boolean isDeleted() {
+    throw new UnsupportedOperationException("This IndexCommit does not support this method.");
+  }
+
   /**
    * Returns true if this commit is an optimized index.
    */

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

@@ -637,6 +637,10 @@ final class IndexFileDeleter {
       }
     }
 
+    public boolean isDeleted() {
+      return deleted;
+    }
+
     public int compareTo(Object obj) {
       CommitPoint commit = (CommitPoint) obj;
       if (gen < commit.gen) {

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

@@ -109,6 +109,9 @@ public class SnapshotDeletionPolicy implements IndexDeletionPolicy {
           cp.delete();
       }
     }
+    public boolean isDeleted() {
+      return cp.isDeleted();
+    }
     public long getVersion() {
       return cp.getVersion();
     }

src/test/org/apache/lucene/index/TestDeletionPolicy.java

@@ -89,7 +89,9 @@ public class TestDeletionPolicy extends LuceneTestCase
       // On init, delete all commit points:
       Iterator it = commits.iterator();
       while(it.hasNext()) {
-        ((IndexCommit) it.next()).delete();
+        final IndexCommit commit = (IndexCommit) it.next();
+        commit.delete();
+        assertTrue(commit.isDeleted());
       }
     }
     public void onCommit(List commits) {