Fixed acorn db main.state loading rollback reporting.

The previous implementation caused main.state loading to always report
the database as requiring rollback which caused the system to always
delete all indexes on program startup.

refs #6709

Change-Id: Id3d90436c1960faa3ac5ebbc82e817b673934f53

diff --git a/bundles/org.simantics.acorn/src/org/simantics/acorn/MainState.java b/bundles/org.simantics.acorn/src/org/simantics/acorn/MainState.java
index ec8451cca78adfef37ea4377cd1fad26e2eff89f..7d158042173089a2034a3b2e5953fc1423fb6e7c 100644 (file)
--- a/bundles/org.simantics.acorn/src/org/simantics/acorn/MainState.java
+++ b/bundles/org.simantics.acorn/src/org/simantics/acorn/MainState.java
@@ -157,15 +157,16 @@ public class MainState implements Serializable {
             
             for (Path p : reverseSortedPaths) {
                 if (!p.equals(latest)) {
-                    // this indicates that there is a possibility that index and vg's are out of sync
-                    // if we are able to find folders with higher number than the current head.state
-                    callback.accept(null);
+                    if (Files.exists(p.resolve(HeadState.HEAD_STATE))) {
+                        // this indicates that there is a possibility that index and vg's are out of sync
+                        // if we are able to find folders with higher number than the current head.state
+                        callback.accept(null);
+                    }
                     uncheckedDeleteAll(p);
                 } else {
                     break;
                 }
             }
-            
         }
     }