armem/dev => master

source/RobotAPI/interface/armem/query.ice

@@ -75,15 +75,31 @@ module armarx
                     };
 
                     /**
-                     * @brief Get the last snapshot before the timestamp.
+                     * @brief Get the last snapshot before or at the timestamp.
                      * 
                      * This query is kind of similar to latest() but with a reference timestamp.
                      * 
                      */
+                    class BeforeOrAtTime extends EntityQuery
+                    {
+                        long timestamp;
+                    }
+
+                    /**
+                     * @brief Get the last snapshot before the timestamp or a sequence of 
+                     *           n last elements before the timestamp depending on #maxEntries
+                     * 
+                     * Depending on #maxEntries, the behavior is as follows:
+                     *  - #maxEntries == 1 => last element before timestamp
+                     *  - #maxEntries > 1  => n last elements before timestamp
+                     *  - #maxEntries < 0  => all elements before timestamp
+                     */
                     class BeforeTime extends EntityQuery
                     {
                         long timestamp;
+                        long maxEntries = 1;
                     }
+
                 }