@@ -275,20 +275,34 @@ function add_aircraft () {

     for key in name revision date author; do

         test -n "${ac_ass_array[$key]}" # exit if missing data (with the help of "set -e")

     done

-    sqlite_request "insert into recover_aircrafts (name, revision, date, author, hangar)

-                        values (

-                        '${ac_ass_array[name]}',

-                         ${ac_ass_array[revision]},

-                         ${ac_ass_array[date]},

-                        '${ac_ass_array[author]}',

-                         ${hangar[id]})"

+    local new_revision=$(sqlite_request "select revision from recover_aircrafts

+                                         where name = '${ac_ass_array[name]}'")

+    if test -z "${new_revision}"; then

+        sqlite_request "insert into recover_aircrafts (name, revision, date, author, hangar)

+                            values (

+                            '${ac_ass_array[name]}',

+                             ${ac_ass_array[revision]},

+                             ${ac_ass_array[date]},

+                            '${ac_ass_array[author]}',

+                             ${hangar[id]})"

+    elif test ${new_revision} -lt ${ac_ass_array[revision]//\"}; then

+        sqlite_request "update recover_aircrafts

+                        set

+                            revision =  ${ac_ass_array[revision]},

+                            date     =  ${ac_ass_array[date]},

+                            author   = '${ac_ass_array[author]}',

+                            hangar   =  ${hangar[id]}

+                        where name = '${ac_ass_array[name]}'"

+    fi

     for key in name revision date author; do

         ac_ass_array[$key]=''

     done

 }

 function add_setxml_for_aircraft () {

-    sqlite_request "insert into recover_setxml values ('$1', '${2/%-set.xml}')"

+    sqlite_request "insert into recover_setxml values ('$1', '${2/%-set.xml}')

+                    on conflict (ac, sx) where ac = '$1' and sx = '${2/%-set.xml}'

+                    do nothing"

 }

 function apply_revision () {

@@ -442,6 +456,8 @@ for h_id in $(sqlite_request "select id from hangars where active = 1"); do

                         ac text,

                         sx text)'

+    sqlite_request 'create unique index if not exists "index_recover_setxml" on recover_setxml (ac, sx)'

+

     eval $(sqlite_request "select printf('hangar[id]=%i;hangar[source]=%s;', id, source)

                            from hangars

                            where id = '${h_id}'")

@@ -461,6 +477,7 @@ for h_id in $(sqlite_request "select id from hangars where active = 1"); do

     if declare -f on_exit > /dev/null; then

         on_exit

     fi

+    sqlite_request "drop index 'index_recover_setxml'"

     sqlite_request "drop table recover_aircrafts"

     sqlite_request "drop table recover_setxml"

 done