xapian: Support in-memory databases.

* xapian/xapian.scm (call-with-in-memory-database): New public
function.

1 files changed, 8 insertions, 0 deletions

diff --git a/xapian/xapian.scm b/xapian/xapian.scm
index 112e6c5..a0876d1 100644
--- a/xapian/xapian.scm
+++ b/xapian/xapian.scm
@@ -30,6 +30,7 @@
             xapian-open-writable
             xapian-close-writable
             call-with-writable-database
+            call-with-in-memory-database
             add-document!
             replace-document!
             make-document
@@ -66,6 +67,13 @@
   (let ((db (xapian-open-writable dbpath)))
     (dynamic-wind noop (cut proc db) (cut xapian-close-writable db))))
 
+(define (call-with-in-memory-database proc)
+  "Call PROC passing it an in-memory writable database. Only a
+writable in-memory database can be created, since a read-only
+in-memory database would always remain empty and is of little use."
+  (let ((db (inmemory-open)))
+    (dynamic-wind noop (cut proc db) (cut xapian-close-writable db))))
+
 (define add-document! WritableDatabase-add-document)
 (define replace-document! WritableDatabase-replace-document)