--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lucene/src/luan/modules/lucene/LuceneSnapshot.java	Tue Sep 30 20:03:56 2014 +0000
@@ -0,0 +1,38 @@
+package luan.modules.lucene;
+
+import java.io.IOException;
+import java.util.Collection;
+import org.apache.lucene.index.IndexCommit;
+
+
+public final class LuceneSnapshot {
+	private final LuceneIndex index;
+	private final IndexCommit ic;
+
+	LuceneSnapshot(LuceneIndex index) {
+		this.index = index;
+		try {
+			this.ic = index.snapshotDeletionPolicy.snapshot();
+		} catch(IOException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	// call in finally block
+	public void close() {
+		try {
+			index.snapshotDeletionPolicy.release(ic);
+		} catch(IOException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	public Collection<String> getFileNames() {
+		try {
+			return ic.getFileNames();
+		} catch(IOException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+}