3 files changed, 15 insertions, 3 deletions

diff --git a/common/storage.h b/common/storage.h
index 22d8046..ac6509d 100644
--- a/common/storage.h
+++ b/common/storage.h
@@ -258,6 +258,7 @@ public:
     static void recordUid(DataStore::Transaction &transaction, const QByteArray &uid, const QByteArray &type);
     static void removeUid(DataStore::Transaction &transaction, const QByteArray &uid, const QByteArray &type);
     static void getUids(const QByteArray &type, const Transaction &, const std::function<void(const QByteArray &uid)> &);
+    static bool hasUid(const QByteArray &type, const Transaction &, const QByteArray &uid);
 
     bool exists() const;
     static bool exists(const QString &storageRoot, const QString &name);
diff --git a/common/storage/entitystore.cpp b/common/storage/entitystore.cpp
index a92de40..454e25a 100644
--- a/common/storage/entitystore.cpp
+++ b/common/storage/entitystore.cpp
@@ -630,11 +630,10 @@ void EntityStore::readAllUids(const QByteArray &type, const std::function<void(c
     DataStore::getUids(type, d->getTransaction(), callback);
 }
 
-bool EntityStore::contains(const QByteArray &type, const QByteArray &uid)
+bool EntityStore::contains(const QByteArray & /* type */, const QByteArray &uid)
 {
     Q_ASSERT(!uid.isEmpty());
-    const auto internalUid = Identifier::fromDisplayByteArray(uid).toInternalByteArray();
-    return DataStore::mainDatabase(d->getTransaction(), type).contains(internalUid);
+    return !DataStore::getRevisionsFromUid(d->getTransaction(), uid).isEmpty();
 }
 
 bool EntityStore::exists(const QByteArray &type, const QByteArray &uid)
diff --git a/common/storage_common.cpp b/common/storage_common.cpp
index 09b7707..7c794c3 100644
--- a/common/storage_common.cpp
+++ b/common/storage_common.cpp
@@ -233,6 +233,18 @@ void DataStore::getUids(const QByteArray &type, const Transaction &transaction,
     });
 }
 
+bool DataStore::hasUid(const QByteArray &type, const Transaction &transaction, const QByteArray &uid)
+{
+    bool hasTheUid = false;
+    transaction.openDatabase(type + "uids").scan(uid, [&](const QByteArray &key, const QByteArray &) {
+        Q_ASSERT(uid == key);
+        hasTheUid = true;
+        return false;
+    });
+
+    return hasTheUid;
+}
+
 bool DataStore::isInternalKey(const char *key)
 {
     return key && strncmp(key, s_internalPrefix, s_internalPrefixSize) == 0;