diff --git a/src/indexer/index_writer.rs b/src/indexer/index_writer.rs
index 7e41f5582..9ad57c1ad 100644
--- a/src/indexer/index_writer.rs
+++ b/src/indexer/index_writer.rs
@@ -356,6 +356,11 @@ impl IndexWriter {
         result
     }
 
+    #[doc(hidden)]
+    pub fn new_segment(&self) -> Segment {
+        self.segment_updater.new_segment()
+    }
+
     /// Spawns a new worker thread for indexing.
     /// The thread consumes documents from the pipeline.
     ///
@@ -429,6 +434,12 @@ impl IndexWriter {
         Ok(())
     }
 
+    pub fn add_segment(&mut self, segment_meta: SegmentMeta) {
+        let delete_cursor = self.delete_queue.cursor();
+        let segment_entry = SegmentEntry::new(segment_meta, delete_cursor, None);
+        self.segment_updater.add_segment(self.generation, segment_entry);
+    }
+
     /// Detects and removes the files that
     /// are not used by the index anymore.
     pub fn garbage_collect_files(&mut self) -> Result<()> {
diff --git a/src/lib.rs b/src/lib.rs
index 101e2e6ea..889ad6fb7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -120,7 +120,7 @@ pub mod fastfield;
 
 
 pub use directory::Directory;
-pub use core::{Index, Segment, SegmentId, SegmentMeta, Searcher};
+pub use core::{Index, Segment, SegmentComponent, SegmentId, SegmentMeta, Searcher};
 pub use indexer::IndexWriter;
 pub use schema::{Term, Document};
 pub use core::SegmentReader;