From: Javier Sancho <jsf@jsancho.org>
Date: Wed, 9 Mar 2016 16:25:26 +0000 (+0100)
Subject: Basic searching support
X-Git-Url: https://git.jsancho.org/?p=bongodb.git;a=commitdiff_plain;h=0fe9f925e00b6899f3b685082ed9b3374933c527

Basic searching support
---

diff --git a/src/bongodb.scm b/src/bongodb.scm
index 3cffa48..e4df14b 100644
--- a/src/bongodb.scm
+++ b/src/bongodb.scm
@@ -79,10 +79,23 @@
   "Query the collection and return the documents that match with filter"
   (let ((table (get-table col)))
     (vhash-fold
-     (lambda (key value result) (cons (vhash->alist value) result))
+     (lambda (key document result)
+       (cond ((match-document? document filter)
+	      (cons (vhash->alist document) result))
+	     (else
+	      result)))
      '()
      table)))
 
+(define (match-document? document filter)
+  "Try to match the given document with a list of conditions"
+  (cond ((null? filter)
+	 #t)
+	(else
+	 (and
+	  (equal? (vhash-assoc (caar filter) document) (car filter))
+	  (match-document? document (cdr filter))))))
+
 
 ;;; Tools
 
diff --git a/tests/sample.scm b/tests/sample.scm
index 047a751..899c6e0 100644
--- a/tests/sample.scm
+++ b/tests/sample.scm
@@ -30,5 +30,7 @@
 
 ; Search
 (test-eqv 2 (length (find col '((a . 1)))))
+(test-eqv 1 (length (find col '((a . 1) (b . 2)))))
+(test-eqv 0 (length (find col '((a . "test")))))
 
 (test-end "bongodb")