From 64d7d7bdd1edb2bcc305ca007784d0708cf7ef3c Mon Sep 17 00:00:00 2001
From: Christian Mollekopf <chrigi_1@fastmail.fm>
Date: Thu, 24 Nov 2016 09:57:34 +0100
Subject: Deal with not using the implicit internal transaction.

---
 common/storage/entitystore.cpp | 13 +++++++++----
 common/storage/entitystore.h   |  2 +-
 2 files changed, 10 insertions(+), 5 deletions(-)

(limited to 'common/storage')

diff --git a/common/storage/entitystore.cpp b/common/storage/entitystore.cpp
index 79314ad..f6b8f43 100644
--- a/common/storage/entitystore.cpp
+++ b/common/storage/entitystore.cpp
@@ -307,7 +307,7 @@ void EntityStore::cleanupRevision(qint64 revision)
     DataStore::setCleanedUpRevision(d->transaction, revision);
 }
 
-void EntityStore::cleanupRevisions(qint64 revision)
+bool EntityStore::cleanupRevisions(qint64 revision)
 {
     bool implicitTransaction = false;
     if (!d->transaction) {
@@ -315,13 +315,18 @@ void EntityStore::cleanupRevisions(qint64 revision)
         implicitTransaction = true;
     }
     const auto lastCleanRevision = DataStore::cleanedUpRevision(d->transaction);
-    SinkTrace() << "Cleaning up from " << lastCleanRevision + 1 << " to " << revision;
-    for (qint64 rev = lastCleanRevision + 1; rev <= revision; rev++) {
-        cleanupRevision(revision);
+    const auto firstRevisionToCleanup = lastCleanRevision + 1;
+    bool cleanupIsNecessary = firstRevisionToCleanup <= revision;
+    if (cleanupIsNecessary) {
+        SinkTrace() << "Cleaning up from " << firstRevisionToCleanup << " to " << revision;
+        for (qint64 rev = firstRevisionToCleanup; rev <= revision; rev++) {
+            cleanupRevision(revision);
+        }
     }
     if (implicitTransaction) {
         commitTransaction();
     }
+    return cleanupIsNecessary;
 }
 
 QVector<QByteArray> EntityStore::fullScan(const QByteArray &type)
diff --git a/common/storage/entitystore.h b/common/storage/entitystore.h
index be3817b..06ca8c4 100644
--- a/common/storage/entitystore.h
+++ b/common/storage/entitystore.h
@@ -47,7 +47,7 @@ public:
     bool modify(const QByteArray &type, const ApplicationDomain::ApplicationDomainType &, const QByteArrayList &deletions, bool replayToSource, const PreprocessModification &);
     bool remove(const QByteArray &type, const QByteArray &uid, bool replayToSource, const PreprocessRemoval &);
     void cleanupRevision(qint64 revision);
-    void cleanupRevisions(qint64 revision);
+    bool cleanupRevisions(qint64 revision);
 
     void startTransaction(Sink::Storage::DataStore::AccessMode);
     void commitTransaction();
-- 
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